阅读说明：本技术 用于给电动车辆充电的充电站 (Charging station for charging electric vehicles ) 是由 A.布格尔迈斯特 D.舍库林 E.西德勒 于 2019-08-02 设计创作，主要内容包括：一种用于给电动车辆充电的充电站(1),其中,所述充电站(1)具有：-壳体(2),-多个第一功率电子器件(3)和多个与所述第一功率电子器件不同的第二功率电子器件(4),其中,所述功率电子器件(3、4)在空间上布置在所述壳体(2)中,和-第一空气冷却回路(5)和所述第一空气冷却回路分开的第二空气冷却回路(6),其中,所述空气冷却回路(5、6)在空间上布置在所述壳体(2)中,所述第一空气冷却回路(5)用于冷却所述多个第一功率电子器件(3),所述第二空气冷却回路(6)用于冷却所述多个第二功率电子器件(4)并且所述充电站(1)被如此构造,使得所述第一空气冷却回路(5)的至少一个区域(40)的第一保护级高于所述第二空气冷却回路(6)的第二保护级。(A charging station (1) for charging electric vehicles, wherein the charging station (1) has: -a housing (2), -a plurality of first power electronics (3) and a plurality of second power electronics (4) different from the first power electronics, wherein the power electronics (3, 4) are spatially arranged in the housing (2), and-a first air-cooling circuit (5) and a second air-cooling circuit (6) separate from the first air-cooling circuit, wherein the air-cooling circuits (5, 6) are spatially arranged in the housing (2), the first air-cooling circuit (5) serves for cooling the plurality of first power electronics (3), the second air-cooling circuit (6) serves for cooling the plurality of second power electronics (4), and the charging station (1) is configured such that a first protection level of at least one region (40) of the first air-cooling circuit (5) is higher than a second protection level of the second air-cooling circuit (6) And (5) a protection stage.)

1. A charging station (1) for charging electric vehicles, wherein the charging station (1) has:

-a housing (2),

-a plurality of first power electronics (3) and a plurality of second power electronics (4) different from the first power electronics, wherein the power electronics (3, 4) are spatially arranged in the housing (2), and

-a first air-cooling circuit (5) and a second air-cooling circuit (6) separate from the first air-cooling circuit, wherein the air-cooling circuits (5, 6) are spatially arranged in the housing (2), the first air-cooling circuit (5) serves for cooling the plurality of first power electronics (3), the second air-cooling circuit (6) serves for cooling the plurality of second power electronics (4) and the charging station (1) is configured such that a first protection level of at least one region (40) of the first air-cooling circuit (5) is higher than a second protection level of the second air-cooling circuit (6).

2. Charging station (1) according to claim 1,

-wherein the plurality of first power electronics (3) has at least one inductive component, in particular a transformer (3 a) and/or a converter and/or a choke, in particular an EMV choke (3 b) and/or a grid choke (3 c), in particular a PFC choke, and/or

-wherein the plurality of second power electronic devices (4) has at least one power electronic switch, in particular a power semiconductor, in particular an IGBT (4 a).

3. Charging station (1) according to one of the preceding claims,

-wherein the first air-cooling circuit (5) has at least one first fan (7), wherein the first fan (7) is configured for conveying an air flow (LS 1) through the first air-cooling circuit (5), and/or

-wherein the second air-cooling circuit (6) has at least one second fan (8), wherein the second fan (8) is configured for conveying an air flow (LS 2) through the second air-cooling circuit (6).

4. Charging station (1) according to one of the preceding claims,

-wherein at least one first power electronic device of the plurality of first power electronic devices (3) is spatially arranged in the first air-cooling circuit (5) at least partially in contact with the air (LU 1) of the first air-cooling circuit (5) and/or

-wherein the charging station (1) has a cooling body (9), wherein the cooling body (9) is spatially arranged in the second air-cooling circuit (6) at least partially in contact with the air (LU 2) of the second air-cooling circuit (6), and at least one second power electronic of the plurality of second power electronics (4) is in contact with the cooling body (9).

5. Charging station (1) according to any of the preceding claims, wherein the charging station (1) has:

-a circuit board (10), wherein at least one first power electronic component of the plurality of first power electronic components (3, 3b, 3 c) is electrically connected to the circuit board (10) and spatially arranged on a circuit board front side (V10) of the circuit board (10), and at least one second power electronic component of the plurality of second power electronic components (4, 4 a) is electrically connected to the circuit board (10) and spatially arranged on a circuit board back side (R10) of the circuit board (10) facing away from the circuit board front side (V10).

6. Charging station (1) according to claims 4 and 5,

-wherein the charging station (1) has a circuit board cover element (11), wherein the circuit board cover element (11) covers the circuit board (10) at least partially on the front side and has at least one lead-through opening (12), wherein at least one first power electronic component of the plurality of first power electronic components (3, 3b, 3 c) passes through the lead-through opening (12) and/or

-wherein the heat sink (9) at a rear side at least partially covers the circuit board (10), and at least one of the plurality of second power electronics (4, 4 a) is spatially arranged between the circuit board (10) and the heat sink (9).

7. Charging station (1) according to one of the preceding claims,

-wherein the housing (2) has a housing front side (V2) and a housing back side (R2) facing away from the housing front side (V2), wherein the charging station (1) is configured such that the housing back side (R2) faces a wall (50) when the charging station (1) is fastened on the wall (50),

-wherein the first air cooling circuit (5) is spatially arranged closer to the housing front side (V2) than the second air cooling circuit (6).

8. Charging station (1) according to any of the preceding claims, wherein the housing (2) has:

-a housing body (13) and a housing cover (14), wherein the first air-cooling circuit (5) is at least partially spatially arranged between the housing body (13) and the housing cover (14).

9. Charging station (1) according to claim 8,

-wherein the housing body (13) has at least one cable lead-through opening (25) for a charging cable and/or a power grid cable, wherein the cable lead-through opening (25) leads into the first air cooling circuit (5).

10. Charging station (1) according to one of the preceding claims,

-wherein the housing (2) has a housing front side (V2) and a housing back side (R2) facing away from the housing front side (V2), wherein the charging station (1) is configured such that the housing back side (R2) faces a wall (50) when the charging station (1) is fastened on the wall (50),

-wherein the housing (2) is open on the housing back side (R2), and

-wherein the second air cooling circuit (6) is at least partially spatially arranged on the housing back side (R2).

11. Charging station (1) according to one of the preceding claims,

-wherein the first air cooling circuit (5) has at least one first air inlet opening (15) in the housing (2), and

-wherein the first air cooling circuit (5) is configured in the mounted position of the charging station (1) below at least one first power electronic component of the plurality of first power electronic components (3) for the purpose of guiding air from an air inlet flow (LES 1) of the first air inlet opening (15).

12. Charging station (1) according to one of the preceding claims,

-wherein the first air cooling circuit (5) has at least one first air inlet opening (15) and/or at least one first air outlet opening (16) in the housing (2), wherein the first air inlet opening (15) and/or the first air outlet opening (16) are arranged spatially below at least one first power electronics of the plurality of first power electronics (3) in the mounted position of the charging station (1), in particular on a housing underside (L2) and/or a housing circumferential side (U2) of the housing (2).

13. Charging station (1) according to one of the preceding claims,

-wherein the second air cooling circuit (6) has at least one second air inlet opening (18) in the housing (2), wherein the second air inlet opening (18) is spatially arranged on a housing underside (L2) of the housing (2) in the mounted position of the charging station (1) and/or

-wherein the second air cooling circuit (6) has at least one second air outlet opening (19) in the housing (2), wherein the second air outlet opening (19) is spatially arranged on a housing circumferential side (U2) of the housing (2) in the mounted position of the charging station (1).

14. Charging station (1) according to any of the preceding claims, wherein the charging station (1) has:

-a base body (20),

-wherein the base body (20) carries at least one of the plurality of first power electronics (3) and/or at least one of the plurality of second power electronics (4) and/or the first fan (7) and/or the second fan (8) and/or the cooling body (9) and/or the circuit board (10) and/or the circuit board-covering element (11), and

-wherein the housing (2) is mounted to the base body (20).

15. Charging station (1) according to one of the preceding claims,

-wherein the first air cooling circuit (5) and the second air cooling circuit (6) are at least partially separated from each other by the housing (2) and/or the cooling body (9) and/or the housing body (13) and/or the base body (20) and/or at least one seal.

Technical Field

The present invention relates to a charging station for charging an electric vehicle.

Background

A charging station for charging an electric vehicle is known.

Disclosure of Invention

The object of the invention is to provide a charging station for charging electric vehicles, which on the one hand enables protection and optimal cooling of the power electronics and on the other hand enables cost-effective production.

The invention achieves this object by providing a charging station having the features of claim 1. Advantageous developments and/or embodiments of the invention are described in the dependent claims.

The charging station, in particular an electric charging station, in particular a wall charging station, according to the invention is designed or configured for, in particular, automatically charging an electrical energy store of an electric vehicle, in particular an electric vehicle (Elektroautos), in particular an electric vehicle. The charging station has a housing, in particular a protective housing. Furthermore, the charging station has a plurality of first power electronics and a plurality of second power electronics different from the first power electronics. The power electronics are arranged spatially in the housing, in particular within the housing. Furthermore, the charging station has a first air cooling circuit and a second air cooling circuit, which is separate or individual, in particular different, from the first air cooling circuit. The air cooling circuit is spatially arranged in the housing, in particular within the housing. Furthermore, the first air cooling circuit serves for cooling the first plurality of power electronics or is constructed or configured for cooling the first plurality of power electronics. In addition, the second air-cooling circuit serves for cooling the second plurality of power electronics or is constructed or configured for cooling the second plurality of power electronics. In addition, the charging station, in particular the housing thereof, is designed or configured or shaped such that a first protection level of at least one region of the first air cooling circuit, in particular of at least one region of the entire first air cooling circuit, is higher than a second protection level of the second air cooling circuit, in particular in a mounting position or mounting orientation of the charging station, in particular when fastened to a wall.

A higher protection level of the charging station or its housing or at least of the region of the first air-cooling circuit enables an optimum protection of the power electronics, in particular of the first plurality of power electronics. Furthermore, the charging station or its air cooling circuit achieves an optimum cooling of the power electronics and thereby avoids overheating and damage to the power electronics. Furthermore, the air cooling circuit, in particular the different protection stages of the air cooling circuit, enable charging stations to be produced cost-effectively, in particular in comparison with previously expensive charging stations having complex cooling devices, such as in particular water cooling circuits and/or heat pipes (english: heat pipe) for a plurality of first power electronics.

In particular, the charging station, in particular its housing, can be constructed or configured for fastening on a wall. The charging station may be referred to as a wall charging station (english). Additionally or alternatively, the charging station may be arranged or constructed or designed for use in an interior space or a protected exterior region. In addition or alternatively, the charging station is designed or configured for charging the electric vehicle, in particular with electrical energy from the power grid, and for discharging the electric vehicle, in particular for feeding electrical energy into the power grid. The charging stations may be referred to as bidirectional charging stations. Further additionally or alternatively, the electric vehicle, in particular its electrical energy storage (if present), is referred to as a grid buffer. Further additionally or alternatively, an electric vehicle may be referred to as a motor vehicle for passenger and cargo transport with an electric drive.

The number of first power electronic devices may be one, two, three, four, five, six, seven, eight, nine, at least ten, at least fifteen, at least twenty. Additionally or alternatively, the number of second power electronic devices may be one, two, three, four, five, six, seven, eight, nine, at least ten, at least fifteen, at least twenty. Further additionally or alternatively, the power electronics can be designed or configured or used for charging electric vehicles, in particular for feeding and for discharging. In particular, the charging station may additionally have at least one, in particular electrical and/or electronic, component, in particular a control device, for example a processor, for charging the electric vehicle, in particular for controlling at least one of the power electronics.

In particular, the air of the first air cooling circuit, in particular of the first air cooling circuit, can be used or configured to absorb the heat or waste heat of the first plurality of power electronics (Abw ä rme), in addition or alternatively, the air of the second air cooling circuit, in particular of the second air cooling circuit, can be used or configured to absorb the waste heat of the second plurality of power electronics.

By "separate" it may be meant that the air of the first air cooling circuit in or within the housing cannot flow into the second air cooling circuit and/or that the air of the second air cooling circuit in or within the housing cannot flow into the first air cooling circuit, in particular cannot leave the housing.

In particular, the respective protection class (IP code) can define a respective protection range, in particular a protection range of the respective air cooling circuit, in particular of the spatially arranged electronic components, in particular of the power electronics in the housing of the charging station, in particular in the case of contact with the air of the air cooling circuit in at least one region of the air cooling circuit, in particular by means of the charging station or by means of the charging station, in particular the housing thereof, with respect to contact and/or foreign matter and/or moisture or water and/or impact resistance. Additionally or alternatively, the first protection level of the area of at least the first air-cooling circuit may be a water spray protection of at least IP54 (Spritzwasserschutz). In other words: at least the region of the first air-cooling circuit itself, in particular in the installed position of the charging station, in particular when fastened to a wall, can be protected from water spray or be constructed or configured or shaped in a water spray-protected manner or have its own water spray protection. In other words: the electronics, in particular the power electronics, in particular the first power electronics, which are arranged spatially in at least one region of the first air cooling circuit, in particular in contact with the first air of the first air cooling circuit, need to be protected or cannot themselves be protected from water spray or are not designed in a water spray-protected manner or do not have their own water spray protection. Further additionally or alternatively, the second air cooling circuit may be constructed or configured to be water compatible. In other words: in the case of contact with the second air of the second air cooling circuit, in particular the second air, the spatially arranged electronic components, in particular the power electronics, should either be protected themselves against water spray or be designed in a water spray-protected manner or have their own water spray protection. The at least one region may represent at least 25% (%) of the volume of the first air cooling circuit, in particular of the air volume, in particular at least 50%, in particular at least 75%.

Further additionally or alternatively, the protection level of the housing may be IK10, and the protection may be from damage due to a blow. Further additionally or alternatively, the housing may be partially or completely made of an insulating material or a non-conductive material, in particular plastic.

In a development of the invention, the first power electronics have at least one inductive component, in particular a transformer (english) and/or a converter (english) and/or a choke (english), in particular an EMV choke (EMV) and/or a grid choke, in particular a PFC choke (PFC: power factor correction or power factor correction; german: lemng factor korrektur), or at least one, in particular a plurality, in particular all, of the first power electronics are in particular in each case an inductive component. In addition or alternatively, the second plurality of power electronic components has at least one power electronic switch, in particular a power semiconductor, in particular an IGBT (IGBT: english: insulated-Gate bipolar transistor; german: bipolar transistor) or at least one, in particular a plurality, in particular all, of the second plurality of power electronic components, in particular in each case a power electronic switch. In particular, the at least one inductive device may heat up or become hot upon magnetic reversal. Additionally or alternatively, the at least one power electronic switch may heat up or become hot due to switching losses. Further additionally or alternatively, the charging station may have at least one inverter, in particular a frequency converter, and/or a grid feedback device, wherein in particular the inverter and/or the grid feedback device may each have at least one power electronic component, in particular a power electronic component, in particular at least one second power electronic component of the plurality of second power electronic components.

In a development of the invention, the first air-cooling circuit has at least one first, in particular electric, fan or ventilator. The first fan, in particular in contact with the air of the first air-cooling circuit, is arranged in particular spatially in the housing, in particular in the first air-cooling circuit, in particular in at least one region, and is configured or arranged for conveying or generating in particular a first air flow through or in the first air-cooling circuit. In addition or alternatively, the second air-cooling circuit has at least one, in particular different, in particular electrical, second fan or ventilator, if present, than the first air-cooling circuit. The second fan, in particular in contact with the air of the second air cooling circuit, is arranged in the housing, in particular in the second air cooling circuit, and is designed or configured to convey or generate, in particular, a second air flow through or in the second air cooling circuit. The first fan enables forced (erzwung) convection in the first air-cooling circuit and thus enables entrainment and removal or discharge of waste heat by or in particular by means of the first air flow. Additionally or alternatively, the second fan can enable forced convection in the second air cooling circuit and thus can enable entrainment and removal or discharge of waste heat by or in particular by means of the second air flow. In particular, the first fan and/or the second fan may be different from the power electronics. Additionally or alternatively, at least the second fan may have a protection stage of IP54 or have its own water spray protection, or may itself be protected from water spray or be constructed in a water spray protection manner.

In a further development of the invention, in particular at least one, in particular a plurality, in particular all, of the first power electronics of the plurality of first power electronics are arranged spatially in the first air-cooling circuit, in particular in at least one region, in particular in the direct or in particular in contact with the first air of the first air-cooling circuit, at least partially, in particular completely. In addition or alternatively, the charging station has a cooling body, which is in particular different from the power electronics. The heat sink is arranged at least partially, in particular completely, in particular spatially in the housing in the second air-cooling circuit, in particular in the case of contact, in particular directly or directly, in particular with the second air in the second air-cooling circuit. At least one, in particular a plurality, in particular all, of the second power electronics of the plurality of second power electronics is in particular in direct or close contact, in particular mechanical and/or surface contact, or touching contact with the heat sink. In particular, the contact with the first air of the first power electronics allows a close or direct cooling of the first power electronics or a close or direct heat transfer from the first power electronics to the first air in particular. In particular, the higher protection level of at least the region of the first air cooling circuit enables contact in particular with the first air of the first power electronics. In addition or alternatively, in particular the contact with the second air of the cooling body and the contact with the cooling body of the second power electronics allows an intermittent or indirect cooling of the second power electronics or an intermittent or indirect heat transfer from the second power electronics, in particular to the second air. At least one, in particular a plurality, in particular all, of the second power electronics is not particularly required, or can be, in particular in the case of a close proximity or direct, in particular in contact with the second air of the second air-cooling circuit, arranged spatially in the second air-cooling circuit. Additionally or alternatively, at least one, in particular a plurality, in particular all, of the second plurality of power electronics requires, in particular requires, or can, in particular can not be protected by itself from water spray (if present) in the second air-cooling circuit or not be configured in a water spray-protected manner or not have a water spray protection of its own. In particular, the heat sink may protect at least one, in particular a plurality, in particular all, of the plurality of second power electronics from water spray (if present) in the second air-cooling circuit. Further additionally or alternatively, the air flow, in particular generated by the first fan, if present, may flow along or around, in particular around, at least one first power electronic device of the plurality of first power electronic devices. Further additionally or alternatively, the air flow, in particular generated by the second fan, if present, may flow along or around the cooling body, in particular around it. Further additionally or alternatively, the cooling body may have cooling ribs. At least in part, at least 25%, in particular at least 50%, in particular at least 75%, of the surface of at least one first power electronic component of the plurality of first power electronic components or of the heat sink can be referred to.

In a further development of the invention, the charging station has an in particular electrical circuit board, in particular arranged spatially in the housing. At least one, in particular a plurality, in particular all, of the first plurality of power electronics components is electrically connected, in particular mechanically connected or supported, in particular with the circuit board and is spatially arranged on the circuit board front side of the circuit board. In particular, furthermore, at least one, in particular a plurality, in particular all, of the second power electronics components are electrically connected to the circuit board, and in particular mechanically connected or supported, and are spatially arranged on a rear side of the circuit board facing away from or opposite to the front side of the circuit board. This makes it possible in particular to achieve a space-saving arrangement of the power electronics in the housing and/or a cost-effective production of the charging station. In particular, the circuit board may be referred to as a power electronics circuit board and/or a double-sided circuit board. In particular, the charging station may have only a single power electronics circuit board. Additionally or alternatively, the circuit board may be distinct from the power electronics.

In one embodiment of the invention, the charging station has a circuit board cover element, in particular, which is different from the power electronics. The circuit board cover element is arranged in particular spatially in the housing, in particular in the first air cooling circuit, in particular in the case of contact with the air of the first air cooling circuit, and covers the circuit board at least partially on the front side and has at least one through opening. In particular, the circuit board cover element can cover the circuit board completely on the front side, except for the at least one lead-through opening. At least one first power electronic component of the plurality of first power electronic components passes through the feedthrough opening or extends through the feedthrough opening. In addition or alternatively, the heat sink covers the circuit board at least partially, in particular completely, on the rear side. At least one second power electronic component of the plurality of second power electronic components is spatially arranged between the circuit board and the heat sink. The circuit board cover element enables protection of the circuit board, in particular protection of an electrical connection to at least one first power electronic device of the plurality of first power electronic devices, in particular from residual water (if present) in the first air-cooling circuit. Additionally or alternatively, the cooling body can enable protection of the circuit board, in particular protection of an electrical connection with at least one second power electronic device of the plurality of second power electronic devices, in particular from water spray, if present, in the second air cooling circuit. In particular, as already mentioned above, at least one first power electronic component of the plurality of first power electronic components can be arranged at least partially spatially in the first air cooling circuit, in particular in the case of a direct contact with the air of the first air cooling circuit. Additionally or alternatively, as already mentioned above, the cooling body, in particular in the case of a direct contact with the air of the second air-cooling circuit, can be arranged at least partially spatially in the second air-cooling circuit. As already mentioned, at least one second power electronic component of the plurality of second power electronic components can be in particular in direct contact with the heat sink. At least in part, at least 25%, in particular at least 50%, in particular at least 75% of the surface of the circuit board front side or of the circuit board rear side can be meant.

In a development of the invention, the housing has a housing front side, which is oriented vertically or perpendicularly in particular in the installed position, and a housing rear side, which is remote from or opposite the housing front side and is oriented vertically or perpendicularly in particular in the installed position. The charging station is configured or arranged or shaped such that the housing back side faces the wall when the charging station is fastened to the wall. In particular, when the charging station is fastened, the charging station, in particular the housing back side, rests against the wall. The first air cooling circuit is spatially arranged closer to the front side of the housing than the second air cooling circuit. In other words: the second air cooling circuit may be spatially arranged closer to the back side of the housing than the first air cooling circuit. In other words, the first air-cooling circuit may be arranged away from the wall and/or the second air-cooling circuit may be arranged close to the wall when fastened to the wall, in particular in the mounted position of the charging station. In particular, the charging station, in particular the housing thereof, may be configured for fastening on a wall, as described above. As mentioned above, the charging station may be referred to as a wall charging station. Additionally or alternatively, the housing back side may be referred to as a wall side.

In a development, in particular in one embodiment of the invention, the housing has a housing body and in particular a housing cover which is different from the housing body. The first air cooling circuit is arranged at least partially, in particular completely, spatially between the housing body and the housing cover. This, in particular the housing cover, makes it possible to easily access or access the first air-cooling circuit and thus in particular to easily access or access at least one first power electronic component of the plurality of first power electronic components and/or at least one second power electronic component of the plurality of second power electronic components and/or the first fan (if present), and/or the circuit board (if present) and/or the circuit board cover element (if present). It is therefore easier to replace certain components in case of maintenance. In particular, the housing cover may be constructed or configured as a reversible or removable closure for the housing body. Additionally or alternatively, the housing cover can be spatially arranged on or define the housing front side. Further additionally or alternatively, the housing body can be spatially arranged on or define the housing back side. Further additionally or alternatively, the housing body may be constructed or configured for fastening on a wall. Further additionally or alternatively, the housing body and/or the housing cover, in particular respectively, are made partially or completely of an insulating material or a non-conductive material, in particular plastic.

In one embodiment of the invention, the housing body, in particular the housing wall of the housing body, has at least one cable feed-through opening, in particular two cable feed-through openings for charging cables, in particular for electrical connection to an electric vehicle, and/or for mains cables, in particular for mains cables connected to a mains grid. The cable lead-through opening is introduced into the first air-cooling circuit, in particular from the outside. This, in particular the housing cover, makes it possible to easily access or access electrical connections, in particular electrical connections for electrical connections, in particular for charging cables and/or mains cables on a circuit board (if present). In particular, the electrical connection can have or be a circuit board connection terminal and/or a printed circuit terminal (Printklemme).

Additionally or alternatively, the charging station, in particular the housing body (if present), can have at least one holder (Halterung) for holding in particular a charging cable, in particular a plug, in particular a vehicle plug, a cable.

In a development of the invention, the housing has a housing front side, which is oriented vertically or perpendicularly in particular in the installed position, and a housing rear side, which is remote from or opposite the housing front side and is oriented vertically or perpendicularly in particular in the installed position. The charging station is configured or arranged or shaped such that the housing back side faces the wall when the charging station is fastened to the wall. In particular, when the charging station is fastened, the charging station, in particular the housing back side, rests against the wall. The housing, in particular the housing body (if present), is open on the housing back side, in particular at least one location. The second air-cooling circuit is arranged at least partially, in particular completely, spatially on the housing rear side. This enables easy access to the second air-cooling circuit and thus in particular to at least one second power electronic device of the plurality of second power electronic devices and/or to the cooling body (if present) and/or to the circuit board (if present). It is therefore easier to replace certain components in case of maintenance. In addition or alternatively, this makes it possible to achieve a contact of the second air cooling circuit with the wall when fastened to the wall, in particular in the installed position of the charging station. The waste heat can thus be absorbed and discharged through or by means of the wall. In particular, the charging station, in particular the housing thereof, may be configured for fastening on a wall, as described above. As mentioned above, the charging station may be referred to as a wall charging station. Additionally or alternatively, the housing back side may be referred to as a wall side.

In a development of the invention, the first air cooling circuit has at least one first air inlet opening, in particular a suction opening, in the housing, in particular in a housing wall and/or in a housing body (if present) of the housing, in particular for air entering from the outside into the first air cooling circuit. The first air cooling circuit is configured or arranged or shaped for being situated below at least one, in particular a plurality, in particular all, of the plurality of first power electronics in the mounted position of the charging station, in particular when fastened to the wall, in particular before the air is guided to at least one of the plurality of first power electronics, in particular for guiding the air from the first air inlet flow of the first air inlet opening. In other words, the first air cooling circuit may be configured or arranged or shaped for being situated below the at least one region in the mounted position of the charging station, in particular when fastened to the wall, in particular before directing the air to the at least one region, in particular for directing the air from the first air inlet flow of the first air inlet opening. In other words: in the installed position of the charging station, in particular when installed on a wall, air, in particular air from the air inlet opening, has flowed up to at least one of the plurality of first power electronics or to at least one region. This, in particular gravity, enables protection of at least one first power electronic device of the plurality of first power electronic devices from residual water (if present) in the air, in particular in the air inlet flow. In particular, the first air-cooling circuit may be referred to as an open air-cooling circuit.

In a development of the invention, the first air cooling circuit has at least one first air inlet opening, in particular a suction opening, and/or at least one first air outlet opening, in the housing, in particular in a housing wall and/or in a housing body (if present) of the housing, in particular for air entering from the outside into the first air cooling circuit and/or flowing out from the first air cooling circuit. The first air inlet opening and/or the first air outlet opening are arranged spatially below at least one, in particular a plurality, in particular all, of the plurality of first power electronics in the mounting position of the charging station, in particular when fastened to the wall, in particular on a horizontally or horizontally oriented housing underside, in particular in the mounting position, and/or on a housing circumferential side of the housing, in particular vertically or vertically oriented in the mounting position. In other words: the first air inlet opening and/or the first air outlet opening can be arranged spatially below the at least one region, in particular on the housing underside and/or the housing circumferential side of the housing, in the mounting position of the charging station, in particular when fastened to the wall. In other words, in particular when mounted on a wall, air, in particular air from the air inlet opening and/or the air outlet opening, has flowed upwards in the mounted position of the charging station to at least one first power electronic component or at least one region of the plurality of first power electronic components. This, in particular gravity, enables protection of at least one first power electronic device of the plurality of first power electronic devices from residual water in the air, if present. In particular, the first air-cooling circuit may be referred to as an open air-cooling circuit.

In a development of the invention, the second air cooling circuit has at least one second air inlet opening, in particular a suction opening, in the housing, in particular in a housing wall and/or in a housing body (if present) of the housing, in particular for air entering from the outside into the second air cooling circuit. The second air inlet opening, in the installed position of the charging station, in particular when fastened to a wall, is spatially arranged on the housing underside, in particular in the installed position in a horizontal or horizontal orientation. In addition or alternatively, the second air cooling circuit has at least one second air outlet opening in the housing, in particular in a housing wall of the housing, in particular a second air outlet opening for air which is directed outwards from the second air cooling circuit. The second air outlet opening is arranged spatially on a housing circumferential side of the housing, in particular vertically or vertically oriented in the installed position, in particular above the second air inlet opening and/or at least one, in particular a plurality, in particular all, of the second plurality of power electronics in the installed position of the charging station, in particular when fastened to the wall. In particular, the second air-cooling circuit may be referred to as an open air-cooling circuit.

In a further development of the invention, the charging station has a base body which is different in particular from the power electronics. The base body carries at least one, in particular a plurality, in particular all, of the plurality of first power electronic components and/or at least one, in particular a plurality, in particular all, of the plurality of second power electronic components and/or the first fan (if present) and/or the second fan (if present) and/or the heat sink (if present) and/or the circuit board-covering element (if present). The housing, in particular the housing body (if present), is placed onto the base body, in particular temporally after the mechanical connection or fastening of the component to be supported. This enables a simple and therefore cost-effective production of the charging station. Additionally or alternatively, this enables simple replacement of certain components in the event of maintenance. In particular, the basic body may be a stamped and bent piece made of sheet material (Blech). Additionally or alternatively, the base body is partially or completely made of an electrical and/or thermal conductor or an electrically and/or thermally conductive material, in particular a metal. In particular, the base body may be constructed or configured for grounding the supported component. Further additionally or alternatively, the base body may be constructed or configured for fastening on a wall.

In a development of the invention, the first air cooling circuit and the second air cooling circuit are at least partially, in particular completely, separated from each other, in particular between two of these components, in particular between the cooling body and the base body, by the housing and/or the cooling body (if present) and/or the housing body (if present) and/or the base body (if present) and/or at least one seal.

Drawings

Further advantages and aspects of the invention emerge from the claims and the following description of preferred embodiments of the invention which are explained below with reference to the drawings. The figures show:

fig. 1 shows a schematic perspective view of a charging station according to the invention in a mounted position when fastened to a wall;

FIG. 2 shows another schematic perspective view of the front side of the housing, the underside of the housing and the circumferential side of the housing of the charging station of FIG. 1;

fig. 3 shows another schematic perspective view of the housing back side and the housing upper side of the charging station of fig. 1;

FIG. 4 shows another schematic perspective view of the charging station of FIG. 1 without the housing cover;

FIG. 5 shows another schematic perspective view of the charging station of FIG. 1 without the housing cover and housing body;

fig. 6 shows another schematic perspective view of the charging station of fig. 1 without the housing cover, the housing body and the circuit board-covering element;

fig. 7 shows another schematic perspective view of the charging station of fig. 1 without the housing cover, the housing body and the circuit board-covering element;

FIG. 8 is a schematic cross-sectional view of the charging station of FIG. 1;

fig. 9 shows another schematic perspective view of the charging station of fig. 1 without the cooling body;

fig. 10 shows a schematic perspective view of another charging station according to the invention without a housing cover;

FIG. 11 shows another schematic perspective view of the charging station of FIG. 10 without the housing cover;

FIG. 12 shows another schematic perspective view of the charging station of FIG. 10 without the housing cover and housing body;

FIG. 13 shows another schematic perspective view of the charging station of FIG. 10 without the housing cover and housing body; and is

Fig. 14 shows another schematic perspective view of the charging station of fig. 10 without the housing cover and the housing body.

Detailed Description

Fig. 1 to 9 and 10 to 14 each show an exemplary embodiment of a charging station 1 according to the invention, in particular a wall charging station. The charging station 1 is designed to charge an electric vehicle. The charging station has a housing 2, in particular a cuboid. Furthermore, the charging station 1 has a plurality of first power electronics 3 and a plurality of second power electronics 4 which are different from the first power electronics. The power electronics 3, 4 are spatially arranged in the housing 2. Furthermore, the charging station 1 has a first air-cooling circuit 5 and a second air-cooling circuit 6 which is separate from the first air-cooling circuit. The air cooling circuit 5, 6 is spatially arranged in the housing 2. Furthermore, the first air-cooling circuit 5 serves for cooling the plurality of first power electronics 3. Furthermore, the second air-cooling circuit 6 serves for cooling the plurality of second power electronics 4. Furthermore, the charging station 1 is designed such that the first protection level of at least one region 40 of the first air-cooling circuit 5 is higher than the second protection level of the second air-cooling circuit 6, in particular in the installed position of the charging station 1 when fastened to the wall 50, as shown in fig. 1.

In detail, the plurality of first power electronic devices 3 has at least one inductive device. In the embodiment of fig. 1 to 9, two transformers 3a are shown and in the embodiment of fig. 10 to 14 one transformer 3a is shown, in the embodiment shown one EMV choke (EMV-Drossel) 3b and three grid chokes 3c are shown, as shown in fig. 4 to 6 and fig. 10 and 12. In an alternative embodiment, the plurality of first power electronics may additionally or alternatively comprise at least one converter.

Furthermore, the second plurality of power electronics 4 has at least one power electronic switch. In the illustrated embodiment, six IGBTs 4a are shown, as shown in fig. 9. In alternative embodiments, the plurality of second power electronic components may have two, three, four, five and/or more than six power electronic switches, in particular IGBTs.

The plurality of first power electronic components 3 are arranged spatially at least partially in the first air-cooling circuit 5, in particular in the at least one region 40, in contact with the air LU1 of the first air-cooling circuit 5, as shown in fig. 4, 8 and 10.

Furthermore, the charging station has a cooling body 9. The heat sink 9 is arranged at least partially spatially in the second air-cooling circuit 6 in contact with the air LU2 of the second air-cooling circuit 6, as shown in fig. 3 and 8. A plurality of second power electronic components 4 are in contact with the heat sink 9, as shown in fig. 7 and 8.

In detail, the plurality of second power electronic components 4 are not spatially arranged in the second air cooling circuit 6 in contact with the air LU2 of the second air cooling circuit 6.

Furthermore, the charging station 1 has a circuit board 10, in particular arranged spatially in the housing 2, as shown in fig. 6 to 9 and 10 to 14. At least one first power electronic component of the plurality of first power electronic components 3, in particular the EMV choke 3b and the mains choke 3c, is electrically connected to the circuit board 10 and is spatially arranged on the circuit board front side V10 of the circuit board 10. In addition, a plurality of second power electronic components 4 are electrically connected to the circuit board 10 and spatially arranged on a circuit board rear side R10 of the circuit board 10 facing away from the circuit board front side V10.

In detail, the charging station 1 has a circuit board-covering element 11, as shown in fig. 4, 5, 8 and 10 to 14. The circuit board cover element 11, in particular in the case of contact with the air LU1 of the first air-cooling circuit 5, is arranged in particular spatially in the housing 2, in particular in the first air-cooling circuit 5, and covers the circuit board 10 at least partially, in particular completely, on the front side and has at least one lead-through opening 12, in the illustrated embodiment four lead-through openings 12. At least one first power electronic component of the plurality of first power electronic components 3 passes through the feedthrough opening 12, in particular the EMV choke 3b and the grid choke 3c passes through the feedthrough opening 12. Furthermore, the heat sink 9 covers the circuit board 10 at least partially, in particular completely, on the rear side. The second power electronics 4 are arranged spatially between the circuit board 10 and the heat sink 9, in particular covered by the circuit board 10 and/or the heat sink.

Furthermore, the housing 2 has a housing front V2, which is vertical in particular in the mounted position, and a housing rear R2, which is vertical in particular in the mounted position, facing away from the housing front V2, as shown in fig. 1 to 3, 8 and 9. Charging station 1 is designed such that, when charging station 1 is fastened, housing rear side R2 faces wall 50, in particular rests against the wall, as shown in fig. 1.

The first air-cooling circuit 5 is spatially arranged closer to the case front side V2 than the second air-cooling circuit 6.

In detail, the housing 2 has a housing body 13 and a housing cover 14. The first air-cooling circuit 5 is arranged at least partially, in particular completely, spatially between the housing body 13 and the housing cover 14, as shown in fig. 8.

In particular, the housing cover 14 defines a housing front side V2, and the housing body 13 defines a housing back side R2.

Furthermore, the housing body 13 has at least one cable feed-through opening (kaboldurchführungs-öffnung) 25 for charging cables and/or mains cables, in the exemplary embodiment of fig. 1 to 9 there is one cable feed-through opening 25 and in the exemplary embodiment of fig. 10 to 14 there are two cable feed-through openings 25, into which the cable feed-through openings 25 lead, in particular from the outside, into the first air-cooling circuit 5.

In detail, the cable lead-through opening 25 is spatially arranged on the housing underside L2 of the housing 2, in particular of the housing body 13, in particular horizontal in the mounted position, in the mounted position of the charging station 1, in particular when fastened to the wall 50.

Furthermore, the circuit board 10 has at least one electrical connection 26, in particular two electrical connections for charging cables and/or mains cables, as shown in fig. 6, 7 and 10 to 14.

In detail, in the exemplary embodiment of fig. 1 to 9, the circuit board cover element 11 has at least one further cable feed opening 27, in particular two cable feed openings for charging cables and/or mains cables, as shown in fig. 4 and 5.

Furthermore, the housing 2, in particular the housing body 13, is open on the housing rear side R2, as shown in fig. 3, 8 and 9. The second air-cooling circuit 6 is arranged at least partially, in particular completely, spatially on the housing rear side R2.

Furthermore, the first air cooling circuit 5 has at least one first air inlet opening 15, in particular a plurality of first air inlet openings in the housing 2, in particular in the housing body 13, in particular for air entering from the outside into the first air cooling circuit 5, as shown in fig. 2, 4 and 8.

The first air-cooling circuit 5 is configured to guide air from an air inlet flow (lufteinlasströmung) LES1 of the first air inlet opening 15 to below the plurality of first power electronics 3 in the mounted position of the charging station 1.

In detail, the first air inlet opening 15, in the installed position of the charging station 1, is spatially arranged below the plurality of first power electronics 3, in particular on the housing underside L2 of the housing 2, in particular on the housing underside of the housing body 13.

Furthermore, the charging station 1, in particular the housing 2, in particular the housing body 13, has a component shielding element 17, as shown in fig. 4 and 8. The component shielding element 17 and the circuit board cover element 11 shield the first power electronic components 3 just before the air inlet flow from the first air inlet opening 15 flows in the direction of the first power electronic components 3 or before direct visual contact (Sichtkontakt) from the outside. In other words, the component shielding element 17 and the circuit board cover element 11 are spatially arranged between the first air inlet opening 15 and the plurality of first power electronic components 3. This additionally enables protection of the first plurality of power electronics 3 from residual water in the air, in particular in the air inlet flow LES1 of the first air cooling circuit 5, if present.

Furthermore, the first air-cooling circuit 5 has at least one first air outlet opening 16, in particular a plurality of first air outlet openings in the housing 2, in particular in the housing body 13, in particular for the air from the first air-cooling circuit 5 to the outside, as shown in fig. 11. The first air outlet opening 16 is arranged spatially below at least one of the plurality of first power electronics 3, in particular of the at least one transformer 3a, in the installation position of the charging station 1, in particular on a housing circumferential side U2 of the housing 2, in particular of the housing body 13, which is vertical, in particular in the installation position.

Furthermore, the circuit board cover element 11 shields at least one of the first power electronics 3, in particular the EMV choke 3b and the grid choke 3c, from the first air outlet opening 16 just before the air flow from the first air outlet opening 16 flows in the direction of at least one of the first power electronics 3, in particular in the direction of the EMV choke 3b and the grid choke 3c, or before direct visual contact from the outside, as shown in fig. 11. In other words, the circuit board cover element 11 is spatially arranged between the first air outlet opening 16 and at least one of the first power electronics 3, in particular the EMV choke 3b and the grid choke 3c, of the plurality of first power electronics 3. This also enables protection of at least one first power electronic device of the plurality of first power electronic devices 3, in particular the EMV choke 3b and the grid choke 3c, from residual water in the air of the first air-cooling circuit 5, if present.

As fig. 2 and 4 show, the second air cooling circuit 6 furthermore has at least one second air inlet opening 18, in particular a plurality of second air inlet openings in the housing 2, in particular in the housing body 13, in particular for air entering from the outside into the second air cooling circuit 6. The second air inlet opening 18 is spatially arranged on the housing 2, in particular on the housing underside L2 of the housing body 13, in the mounted position of the charging station 1.

Furthermore, the second air cooling circuit 6 has at least one second air outlet opening 19, in particular a plurality of second air outlet openings in the housing 2, in particular in the housing body 13, in particular for the air which is directed out of the second air cooling circuit 6, as shown in fig. 2 and 11. The second air outlet opening 19 is arranged spatially on the housing 2, in particular on the housing circumferential side U2 of the housing body 13, in particular above the heat sink 9 in the installation position of the charging station.

Furthermore, the first air-cooling circuit 5 has at least one first fan (Ventilator) 7, in particular two, as shown in fig. 4 to 7. The at least one first fan 7 is configured to deliver an air flow LS1 through the first air-cooling circuit 5.

In operation, air LU1/LS1 flows from the outside through the first air inlet opening 15 on the left side of the housing underside L2 upwards into the housing 2 or into the first air-cooling circuit 5, from the first air inlet opening 15 upwards along the first plurality of power electronic components 3 to the right, from the top downwards to the first air outlet opening 16 on the right side of the housing circumferential side U2 and from the housing 2 or the first air-cooling circuit 5 through the first air outlet opening 16 to the outside to the right, as shown in fig. 4.

Furthermore, the second air-cooling circuit 6 has at least one second fan 8, in particular two, as shown in fig. 5 to 8 and 12 to 14. The at least one second fan 8 is configured for conveying an air flow LS2 through the second air cooling circuit 6.

In detail, at least one second fan 7 is spatially arranged in the second air-cooling circuit 6 in such a way that it directly blows towards the cooling body 9, in particular the cooling ribs of the cooling body 9.

In operation, air LU2/LS2 flows from the outside through the second air inlet opening 18 in the middle of the housing underside L2 upwards into the housing 2 or into the second air-cooling circuit 6, from the second air inlet opening 18 upwards along the cooling body 9, in particular the cooling ribs of the cooling body 9, to the right and to the left toward the at least one second air outlet opening 19 on both sides of the housing circumferential side U2 and from the housing 2 or the second air-cooling circuit 6 through the at least one second air outlet opening 19 to the outside to the right and to the left, as shown in fig. 3

Furthermore, the charging station has a base body 20, in particular a cuboid, as shown in fig. 3, 5 to 9 and 12 to 14. The base body 20 carries a plurality of first power electronic components 3, a plurality of second power electronic components 4, a first fan 7, a second fan 8, a heat sink 9, a circuit board 10 and a circuit board cover element 11. The housing 2, in particular the housing body 13, is mounted (aufsetzen) on a base body 20.

In detail, as shown in fig. 9, the base body 20 has recesses or cut-outs 21 for the plurality of second power electronic devices 4 and/or the cooling body 9, in particular for the plurality of second power electronic devices 4 in contact with the cooling body 9.

The second air cooling circuit 6 is also arranged in the base body 20 in some regions in space, in particular the second air cooling circuit 6 has at least one air passage opening (luftdurchclassöffnung) 22, in particular for an air flow LS2, in particular in the base body wall of the base body 20, as shown in fig. 5, 6 and 13, in particular at least one air passage opening 22 is arranged opposite the at least one second air outlet opening 19, in addition the base body 20 is open on the housing rear side R2.

Furthermore, the first air-cooling circuit 5 and the second air-cooling circuit 6 are separated from one another by the housing 2, in particular the housing body 13, the cooling body 9, the base body 20 and at least one seal.

In detail, the spatial arrangement in the direction x of the case back side R2 toward the case front side V2 is as follows, as shown in fig. 8: a housing rear side R2, a second air-cooling circuit 6 and a heat sink 9, a plurality of second power electronics 4, a circuit board 10, a plurality of first power electronics 3 and a circuit board cover element 11, a first air-cooling circuit 5 and a housing front side V2. In particular, the circuit board 10, in particular the plane of the circuit board 10, is arranged parallel to the housing front side V2 and/or the housing rear side R2.

This spatial arrangement enables a flat structure of the charging station 1. In other words: when fastened to the wall 50, the charging station 1 hardly protrudes from the wall 50 in the mounted position of the charging station 1.

In detail, the dimensions of the charging station 1 are as follows, as shown in fig. 1:

the length L is in the range of a minimum of 660 millimeters (mm) to a maximum of 860mm, in particular 760 mm.

The width B is in the range of at least 460mm to at most 660mm, in particular 560 mm.

The height H is in the range of at least 150mm, in particular from a minimum of 185mm to a maximum of 250mm, in particular to a maximum of 225 mm.

In particular, the relationship of length L to width B is defined by L/B = B/(L-B), and thus, in particular, a shape referred to as golden section or charging station 1 may be referred to as golden rectangle.

Furthermore, the charging station 1 has a control device 35, in particular a processor, in particular an FPGA, on a control circuit board 36, as shown in fig. 6 to 8. The control device 35 is designed or configured to control the charging of the electric vehicle, in particular to control the first power electronics 3, the second power electronics 4, the first fan 7 and the second fan 8.

Furthermore, the charging station 1 has at least one communication and/or interface device, in particular an RJ-45 socket, a field bus interface, an SD card reader and/or a WLAN module, on the control circuit board 36.

In detail, the control circuit board 36 is spatially arranged between the circuit board 10 and the circuit board-covering element 11. This enables protection of the control circuit board 36 from residual water in the air of the first air-cooling circuit 5, if present.

Furthermore, the charging station 1 has at least one further electrical component, in particular an electrolytic capacitor. In detail, at least one further electrical component is electrically connected to the circuit board 10 and is spatially arranged on the circuit board front side V10 of the circuit board 10. In particular, at least one further electrical component is spatially arranged between the circuit board 10 and the circuit board cover element 11. This enables the protection of the at least one further electrical device from residual water in the air of the first air cooling circuit 5, if present.

The housing 2, in particular the housing body 13 and the housing cover 14 or the first air-cooling circuit 5, is closed, except for the first air inlet opening 15 and the first air outlet opening 16. In particular, the housing 2, in particular the housing body 13, has no air openings, in particular on a housing upper side of the housing 2, in particular of the housing body 13, which is oriented horizontally or horizontally in the installed position. A plurality of first power electronics 3, and in particular a plurality of second power electronics 4, are spatially arranged inside the housing 2 or the first air-cooling circuit 5. The charging station 1 or the structure of the charging station 1 is designed or embodied in such a way that despite the air openings 15, 16 and in particular 18, 19, a sealing of the IP54, in particular of the first air-cooling circuit 5, in particular of the at least one region 40, is achieved in the housing 2.

As is clear from the exemplary embodiments shown and explained above, the invention provides an advantageous charging station for charging electric vehicles, which on the one hand enables protection and optimal cooling of the power electronics and on the other hand enables cost-effective production.