阅读说明：本技术 一种电源逆变支架 (Power supply inversion bracket ) 是由 郭兴安 蔡尚顺 林玮健 于 2020-08-21 设计创作，主要内容包括：本发明公开了一种电源逆变支架,其包括：用于安装电池模组的支架本体,以及设于所述支架本体的电源变换器；所述电源变换器包括：用于连接电池模组(1)的第一接口(2)；用于连接负载(6)的第二接口(5)；连接于所述第一接口和第二接口之间的多个电压变换模块(3)；以及电压识别模块(4),所述电压识别模块分别与所述第二接口和各所述电压变换模块相连,用于当所述第二接口连接负载后,检测连接负载的导线的线阻,进而控制与所述线阻匹配的电压变换模块启动。通过本支架,不同的电动车可以使用相同规格的电池模组。(The invention discloses a power supply inversion bracket, which comprises: the bracket comprises a bracket body for mounting a battery module and a power converter arranged on the bracket body; the power converter includes: a first interface (2) for connecting the battery module (1); a second interface (5) for connecting a load (6); a plurality of voltage conversion modules (3) connected between the first interface and the second interface; and the voltage identification module (4) is respectively connected with the second interface and each voltage conversion module, and is used for detecting the line resistance of a wire connected with a load after the second interface is connected with the load, so as to control the voltage conversion module matched with the line resistance to start. Through this support, the battery module of the same specification can be used to different electric motor cars.)

1. A power inverter cradle, comprising: the bracket comprises a bracket body (7) used for installing the battery module (1) and a power converter arranged on the bracket body (7);

the power converter includes:

a first interface (2) for connecting the battery module (1);

a second interface (5) for connecting a load (6);

a plurality of voltage conversion modules (3) connected between the first interface (2) and the second interface (5); and

and the voltage identification module (4) is respectively connected with the second interface (5) and each voltage conversion module (3) and is used for detecting the line resistance of a wire connected with the load (6) after the second interface (5) is connected with the load (6), and further controlling the voltage conversion module (3) matched with the line resistance to start.

2. The power supply inversion stand according to claim 1, wherein the plurality of voltage conversion modules (3) comprises at least one voltage boosting module and at least one voltage dropping module.

3. The power supply inverter bracket according to claim 1, further comprising a speed controller (21), wherein the speed controller (21) is respectively connected to each of the voltage conversion modules (3) and is configured to receive a driving speed and reduce an output voltage or an output current of the voltage conversion module (3) when the driving speed exceeds a set range.

4. The power inverter bracket according to claim 3, further comprising a Bluetooth module (22), wherein the Bluetooth module (22) is connected to the speed controller (21) and is configured to receive data from the battery module (1), and the data includes a driving speed.

5. The power supply inverter bracket according to claim 1, wherein the bracket body (7) comprises:

a rod body (8);

a shell (9) arranged at one end of the rod body (8); and

the battery positioning piece (10) is arranged at the other end of the rod body (8) and is opposite to the end part of the shell (9);

the power converter is arranged in the shell (9), and the battery module (1) is arranged between the shell (9) and the battery positioning piece (10).

6. The power supply inverter stand according to claim 5, characterized in that the casing (9) is further provided with a one-way ventilation valve which ventilates from the inside to the outside of the casing (9).

7. The power supply inverter stand according to claim 5, wherein the housing (9) comprises:

a metal housing (11);

the metal inner shell (12) is sleeved in the metal outer shell (11) and used for increasing the heat dissipation area; and

the heat conducting piece is arranged inside the metal inner shell (12), penetrates through the metal inner shell (12) and is in physical contact with the metal outer shell (11), and is used for receiving internal heat and conducting the heat to the metal outer shell (11).

8. The power inversion bracket of claim 7, wherein the thermal conductor is comprised of a plurality of thermally conductive modules in physical contact, the plurality of thermally conductive modules comprising:

a first heat conduction module (14) embedded in a groove at the inner side part of the metal inner shell (12);

a second heat conduction module (13) embedded in a groove at the outer side part of the metal inner shell (12);

the groove of the outer side and the groove of the inner side at least partially coincide.

9. The power inversion bracket of claim 7, wherein the first heat conducting module (14) is a plate structure comprising a heat conducting bottom (15) and a heat conducting side (16), and the second heat conducting module (14) is a strip structure folded into a frame shape.

10. The power supply inverter bracket according to claim 5, wherein the battery positioning member (10) is pivotally supported on the rod body (8) to be rotatable, so that the battery positioning member (10) can be in a state of being staggered with the end of the housing (9), and a locking mechanism is further provided between the battery positioning member (10) and the rod body (8) for locking the battery positioning member (10) in a state of being opposite to the end of the housing (9).

Technical Field

The invention relates to the field of electric vehicles, in particular to a power supply inverter bracket.

Background

With the development of the express industry and the application of new energy, electric vehicles are increasingly used.

Electric vehicles produced by different manufacturers, even electric vehicles of different models produced by the same manufacturer, have different voltages, for example, common voltages are 24V, 36V, 48V, 60V and 72V, which results in the need of respectively equipping different power modules, and thus the universality is poor and the production cost is high.

In addition, along with the higher and higher demands of industries such as take-out, express delivery and the like on timeliness, the electric bicycle has more and more overspeed driving phenomena, and the traffic accident risk is greatly increased. Although some electric bicycles are designed with speed limiting devices, the speed limiting devices are easy to be detached or damaged by vehicle owners, and cannot achieve the expected effect.

Disclosure of Invention

The present invention is directed to a power inverter bracket that at least partially overcomes the above-mentioned disadvantages of the related art.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows:

a power inverter stand, the power inverter stand comprising: the bracket comprises a bracket body for mounting a battery module and a power converter arranged on the bracket body; wherein the power converter comprises: the first interface is used for connecting the battery module; a second interface for connecting a load; a plurality of voltage conversion modules connected between the first interface and the second interface; and the voltage identification module is respectively connected with the second interface and each voltage conversion module and is used for detecting the line resistance of a wire connected with a load after the second interface is connected with the load so as to control the voltage conversion module matched with the line resistance to start.

Because the wire diameter and the wire resistance of the electric vehicle with different voltages are different, the higher the voltage is, the larger the wire diameter is, and the smaller the wire resistance is. Therefore, the voltage of the electric vehicle can be identified by detecting the line resistance, and then the matched voltage conversion module is selected to generate the matched voltage.

Preferably, the plurality of voltage conversion modules includes at least one voltage boosting module and at least one voltage dropping module.

In order to further solve the problem of overspeed of the electric vehicle, the power supply inverter bracket further comprises a speed controller, wherein the speed controller is respectively connected with each voltage conversion module and is used for receiving the driving speed and reducing the output voltage or the output current of the voltage conversion module when the speed of the electric vehicle exceeds a set range.

Preferably, the power supply inverter support further comprises a bluetooth module, wherein the bluetooth module is connected with the speed controller and used for receiving data from the battery module, and the data comprises the driving speed.

In order to facilitate the combination of the battery module and the power inverter bracket, preferably, the bracket body includes: a rod body; the shell is arranged at one end of the rod body; the battery positioning piece is arranged at the other end of the rod body and is opposite to the end part of the shell; the power converter is arranged in the shell, and the battery module is arranged between the shell and the battery positioning piece.

In order to improve the reliability and stability of the power inverter bracket, preferably, the housing is further provided with a one-way ventilation valve for ventilating from the inside to the outside of the housing.

In order to further improve the reliability and stability of the power inverter bracket, preferably, the housing includes: a metal housing; the metal inner shell is sleeved in the metal outer shell and used for increasing the heat dissipation area; and the heat conducting piece is arranged in the metal inner shell, penetrates through the metal inner shell, is in physical contact with the metal outer shell, and is used for receiving internal heat and conducting the internal heat to the metal outer shell.

Preferably, the heat conducting member is composed of a plurality of heat conducting modules in physical contact, the plurality of heat conducting modules including: the first heat conduction module is embedded in the groove at the inner side part of the metal inner shell; the second heat conduction module is embedded in the groove at the outer side part of the metal inner shell; the groove of the outer side and the groove of the inner side at least partially coincide.

More preferably, the first heat conduction module is of a sheet structure and comprises a heat conduction bottom and a heat conduction side, and the second heat conduction module is of a strip structure and is folded into a frame shape.

In order to further facilitate the detachment and installation of the battery module, preferably, the shaft of the battery positioning piece is supported on the rod body to be rotatable, so that the battery positioning piece can be in a state of being staggered with the end part of the shell, and a locking mechanism is further arranged between the battery positioning piece and the rod body and used for locking the battery positioning piece in a state of being just opposite to the end part of the shell.

Compared with the prior art, the invention has at least the following beneficial effects:

through this support, the battery module of the same specification can be used to different electric motor cars.

When the electric vehicle is overspeed, the speed can be automatically reduced. And the speed controller and the power converter are designed into a whole, so that the electric vehicle cannot be used after being damaged, and the speed limiting device can be effectively prevented from being dismounted by a vehicle owner.

Drawings

FIG. 1 is a block diagram of one embodiment of a power converter;

FIG. 2 is a block diagram of another embodiment of a power converter;

FIG. 3 is a schematic structural view of a stent body;

FIG. 4 is an exploded view of the housing;

FIG. 5 is a schematic view of an assembly of the inner casing, the outer casing and the heat-conducting member;

FIG. 6 is a schematic view of the locking mechanism and shaft;

reference numerals:

1. a battery module; 2. a first interface; 3. a voltage conversion module; 4. a voltage identification module; 5. a second interface; 6. a load; 7. a stent body; 8. a rod body; 9. a housing; 10. a battery positioning member; 11. a metal housing; 12. a metal inner shell; 13. a second heat conducting module; 14. a first heat conducting module; 15. a thermally conductive bottom; 16. a thermally conductive side portion; 17. a shaft; 18. a safety pin; 19. a latch bolt; 20. a lock hole; 21. a speed controller; 22. and a Bluetooth module.

Detailed Description

The invention is further illustrated with reference to the following figures and examples.

The power supply inversion support comprises a support body and a power supply converter, wherein the support body is used for mounting a battery module, and the power supply converter is arranged on the support body.

A block diagram of an embodiment of a power converter is shown in fig. 1, where the dashed lines represent control signals. Referring to fig. 1, the power converter includes: a first interface 2 for connecting the battery module 1; a second interface 5 for connecting a load 6; a plurality of voltage conversion modules 3 connected between the first interface 2 and the second interface 5; and the voltage identification module 4 is respectively connected with the second interface 5 and each voltage conversion module 3, and is used for detecting the line resistance of a wire connected with the load 6 after the second interface 5 is connected with the load 6, so as to control the voltage conversion module 3 matched with the line resistance to start.

The load 6 in this embodiment refers to an electric vehicle. The wire diameters and the wire resistances of the electric vehicles with different voltages are different, the higher the voltage is, the larger the wire diameter is, and the smaller the wire resistance is, like the electric vehicles with the five voltage specifications of 24V, 36V, 48V, 60V and 72V, the wire diameters of the adopted leads are sequentially increased, and the wire resistances of the leads are sequentially reduced. After the electric vehicle is connected through the second interface 5, the voltage identification module 4 can detect the line resistance of the wire adopted by the electric vehicle through the second interface 5, the voltage specification of the electric vehicle can be distinguished through the line resistance, and then the voltage conversion module 3 matched with the voltage specification is controlled to be started to output the required voltage to the electric vehicle.

In a specific embodiment, the input voltage range of the first interface 2 is 33-42V, the plurality of voltage conversion modules 3 include at least one voltage boosting module and at least one voltage dropping module, and the second interface 5 can output voltages of 24V, 36V, 48V, 60V and 72V by selecting different voltage conversion modules 3.

A block diagram of another embodiment of a power converter is shown in fig. 2, where the dashed lines represent control signals. Referring to fig. 2, the power converter includes: a first interface 2 for connecting the battery module 1; a second interface 5 for connecting a load 6; a plurality of voltage conversion modules 3 connected between the first interface 2 and the second interface 5; and the voltage identification module 4 is respectively connected with the second interface 5 and each voltage conversion module 3, and is used for detecting the line resistance of a wire connected with the load 6 after the second interface 5 is connected with the load 6, so as to control the voltage conversion module 3 matched with the line resistance to start. The power converter further comprises a speed controller 21, wherein the speed controller 21 is respectively connected with each voltage conversion module 3 and is used for receiving the driving speed and reducing the output voltage or the output current of the voltage conversion module 3 when the driving speed exceeds a set range. Further, a bluetooth module 22 is included, and for convenience of description, the bluetooth module 22 is hereinafter referred to as a first bluetooth module, and the first bluetooth module is connected to the speed controller 21. Dispose gyroscope and speed measuring module at battery module 1, the two cooperation can realize measuring the speed to the contactless of electric motor car, still disposes bluetooth module in addition, for the convenience of description, hereinafter calls this bluetooth module to be the second bluetooth module. The first Bluetooth module and the second Bluetooth module are matched, the driving speed measured by the battery module 1 can be transmitted to the speed controller 21 in real time, when the driving speed is greater than a preset speed limit value, the speed controller 21 outputs a signal to control the output voltage or the output current of the voltage conversion module 3 to be reduced, and therefore automatic speed reduction control is achieved. In this embodiment, the speed measurement module adopts a non-contact speed measurement mode located inside the battery module 1, and the speed controller 21 is arranged in the power converter, so that after any one of the speed controller is damaged, the electric vehicle loses power and cannot run normally, and therefore the vehicle owner can be effectively prevented from maliciously avoiding speed limitation by dismantling the speed limiting device.

To facilitate the combination of the battery module 1 and the power inversion bracket, as shown in fig. 3, the bracket body 7 of some embodiments includes: a rod body 8; a shell 9 arranged at one end of the rod body 8; and a battery positioning member 10 provided at the other end of the rod body 8 to be opposed to the end of the case 9; the power converter is arranged inside the shell 9, the battery module 1 is arranged at the upper end of the shell 9, and the battery positioning piece 10 is locked on the bracket body 7.

The casing 9 is a sealed structure, and heat generated by the power converter is accumulated in the casing 9, which can cause temperature rise in the casing 9, and the service life, reliability and stability of the power converter can be affected when the power converter works at a high temperature for a long time. Therefore, the following technical solutions are further adopted.

On the other hand, the housing 9 is provided with a one-way ventilation valve that allows ventilation from the inside to the outside of the housing 9, and the generated high-temperature gas can be released to the outside of the housing 9.

On the other hand, referring to fig. 4 and 5, the housing 9 has the following structure: the housing 9 comprises a metal shell 11; the metal inner shell 12 is sleeved in the metal outer shell 11 and used for increasing the heat dissipation area; and a heat conduction member provided inside the metal inner case 12 and passing through the metal inner case 12 to be in physical contact with the metal outer case 11, for receiving internal heat and conducting the same to the metal outer case 11. The material of the outer shell and the inner shell is preferably aluminum, and the material of the heat conducting member is preferably copper. A part of the heat generated by the power converter is dissipated through the inner shell, and the other part of the heat is quickly conducted to the outer shell through the heat conducting piece and is dissipated to the environment through the outer shell.

Through the technical scheme, the power converter can be kept at the working temperature of below 50 ℃ in the small-size sealed shell 9, so that the working stability and reliability can be ensured.

Further in order to facilitate the installation of the inner shell, the outer shell and the heat conducting member, the heat conducting member is formed by a plurality of heat conducting modules in physical contact, and the plurality of heat conducting modules comprise: a first heat conduction module 14 embedded in a groove at the inner side of the metal inner shell 12; a second heat conduction module 13 embedded in the groove at the outer side of the metal inner shell 12; the groove of the outer side and the groove of the inner side at least partially coincide. In this embodiment, the first heat conducting module 14 is a sheet structure, and includes a heat conducting bottom portion 15 and a heat conducting side portion 16, and the second heat conducting module 13 is a strip structure and is folded into a frame shape. During installation, the first heat conducting module 14 is assembled to the metal inner shell 12 from the inside, the second heat conducting module 13 is assembled to the metal inner shell 12 from the outside, and then the metal inner shell 12 is installed into the metal outer shell 11, so that installation of the heat conducting structure which penetrates through the metal inner shell 12 from the inside of the metal inner shell 12 and is connected with the metal outer shell 11 in a heat conducting mode can be completed.

Further in order to facilitate the detachment and installation of the battery module 1, referring to fig. 6, the battery positioning member 10 is supported by the rod body 8 through the shaft 17, and after the battery positioning member 10 is rotated around the shaft 17, the battery positioning member 10 can be in a state of being staggered with the end portion of the housing 9, and in this state, the battery module 1 can be conveniently placed on the top of the housing 9 or taken away from the top of the housing 9. A locking mechanism is further arranged between the battery positioning piece 10 and the rod body 8, after the battery module is placed at the top end of the shell 9, the battery positioning piece 10 is rotated to a position right opposite to the end part of the shell 9, and the battery positioning piece 10 is locked in the state through the locking mechanism, so that the battery module 1 and the support body 7 are combined into a whole. In this embodiment, the locking mechanism includes a locking tongue 19, a locking hole 20 engaged with the locking tongue 19, and a safety pin 18 for locking the state of the locking tongue 19.

The power supply inversion support enables the battery module 1 of the same specification to be adaptive to electric vehicles of different voltage specifications on the one hand, and can automatically decelerate and control when the electric vehicle is overspeed. The working principle is as follows: after the second interface 5 is connected with the electric vehicle, the voltage identification module 4 detects the resistance value of the electric vehicle wire connected with the second interface 5, controls the corresponding voltage conversion module 3 to start according to the preset resistance value-voltage corresponding relation, and the electric energy output by the battery module 1 is converted into the required voltage through the voltage conversion module 3 and supplies power to the electric vehicle through the second interface 5. The speed controller 21 receives the driving speed, and when the driving speed exceeds a set range, the output voltage or the output current of the voltage conversion module 3 is reduced, so that the speed of the electric vehicle is reduced, and the purpose of automatic speed limitation is achieved.

The present invention has been described in detail with reference to the specific embodiments, and the detailed description is only for the purpose of helping those skilled in the art understand the present invention, and is not to be construed as limiting the scope of the present invention. Various modifications, equivalent changes, etc. made by those skilled in the art under the spirit of the present invention shall be included in the protection scope of the present invention.