阅读说明：本技术 一种电动车防爆防易燃电池充电保护装置 (Explosion-proof flammable battery charging protection device of electric motor car ) 是由 陈惠斌 于 2021-09-15 设计创作，主要内容包括：本发明公开了一种电动车防爆防易燃电池充电保护装置,其包括充电器保护构件和电池保护构件；充电器保护构件包括由金属抗压材料制作而成的充电器外盒,充电器外盒内设有充电器电路板,充电器外盒的一侧面设有进风口,充电器外盒与进风口相对的另一侧面设有自带排风扇的出风口,进风口和出风口上均设有能在充电器外盒的内部气压冲击下关闭隔断外界的压力盖；电池保护构件包括由金属抗压材料制作而成的电池储存箱,电池储存箱内设有蓄电池和冷却灌,冷却灌能在电池储存箱的内部气压冲击下自动打开其阀门释放制冷剂。采用本发明,能解决在充电过程中或在行驶、停放中自身原因引起电池短路爆炸带来的灾害损失问题。(The invention discloses an explosion-proof and inflammable-proof battery charging protection device of an electric vehicle, which comprises a charger protection component and a battery protection component; the charger protection component comprises a charger outer box made of metal compression-resistant materials, a charger circuit board is arranged in the charger outer box, one side face of the charger outer box is provided with an air inlet, the other side face, opposite to the air inlet, of the charger outer box is provided with an air outlet with an exhaust fan, and the air inlet and the air outlet are respectively provided with a pressure cover capable of closing and isolating the outside under the impact of the internal air pressure of the charger outer box; the battery protection component comprises a battery storage box made of metal pressure-resistant materials, a storage battery and a cooling tank are arranged in the battery storage box, and the cooling tank can automatically open a valve of the battery storage box to release refrigerant under the impact of the internal air pressure of the battery storage box. The invention can solve the problem of disaster loss caused by battery short circuit explosion caused by self reasons in the charging process or in the driving and parking processes.)

1. An explosion-proof and inflammable-proof battery charging protection device of an electric vehicle is characterized by comprising a charger protection component and a battery protection component;

the charger protection component comprises a charger outer box made of metal pressure-resistant materials, a charger circuit board is arranged in the charger outer box, an air inlet is formed in one side face of the charger outer box, an air outlet with an exhaust fan is formed in the other side face, opposite to the air inlet, of the charger outer box, and pressure covers capable of closing and isolating the outside under the impact of the internal air pressure of the charger outer box are arranged on the air inlet and the air outlet; the charger outer box is provided with a power interface connected with commercial power and a battery interface connected with a battery of the electric vehicle;

the battery protection component comprises a battery storage box made of metal compression-resistant materials, a storage battery and a cooling tank are arranged in the battery storage box, and the cooling tank can automatically open a valve of the battery storage box to release refrigerant under the impact of the internal air pressure of the battery storage box; the battery storage box is provided with a charging interface connected with the charger and a motor interface connected with the motor of the electric vehicle.

2. The explosion-proof and inflammable battery charging protection device for the electric vehicle as claimed in claim 1, wherein the charger protection member further comprises a first high pressure exhaust valve disposed at a position of the outer charger case near the air outlet.

3. The explosion-proof and flammable-proof battery charging protection device for the electric vehicle as claimed in claim 1, wherein the charger circuit board is connected with a first short circuit automatic protection switch.

4. The explosion-proof and flammable-proof battery charging protection device for the electric vehicle as claimed in claim 1, wherein the entire inner side of the outer casing of the charger is coated with an insulating and flame-retardant glue layer.

5. The explosion-proof and flammable-proof battery charging protection device for the electric vehicle as claimed in claim 4, wherein the insulating and flame-retardant glue layer is about 2 mm.

6. The explosion-proof and inflammable battery charging protection device for the electric vehicle as claimed in claim 1, wherein the battery protection member further comprises a second high pressure exhaust valve disposed at a position of the battery storage case near the cooling tank side.

7. The explosion-proof and anti-inflammable battery charging protection device for the electric vehicle as claimed in claim 1, wherein the refrigerant is freon.

8. The charging protection device for the explosion-proof and inflammable battery of the electric vehicle as claimed in claim 1, wherein the storage battery is connected with a second short circuit automatic protection switch.

9. The explosion-proof and flammable-proof battery charging protection device for the electric vehicle as claimed in claim 1, wherein a side plate of one side of the battery storage box is a push-pull cover plate; and a sealing ring is arranged between the push-pull cover plate and the battery storage box.

10. The charging protection device for the explosion-proof and inflammable battery of the electric vehicle as claimed in claim 1, wherein the power interface is connected with a power plug, and a third short circuit automatic protection switch is arranged in the power plug.

Technical Field

The invention belongs to the technical field of electric vehicles, and particularly relates to an explosion-proof and flammable-proof battery charging protection device for an electric vehicle.

Background

The traditional electric vehicle is not attached with an explosion-proof and anti-inflammable protection device, and the storage battery is arranged in a battery box or a simple battery cabinet, so that the battery is easy to generate short circuit and is inflammable or the battery is subjected to short circuit and explosion in the charging process.

Disclosure of Invention

The invention aims to provide an explosion-proof and inflammable-proof battery charging protection device for an electric vehicle, which can solve the problem of disaster loss caused by short-circuit explosion of batteries caused by self reasons in the charging process or in the driving and parking processes.

In order to achieve the above object, the present invention provides an explosion-proof and inflammable battery charging protection device for an electric vehicle, which includes a charger protection member and a battery protection member; the charger protection component comprises a charger outer box made of metal pressure-resistant materials, a charger circuit board is arranged in the charger outer box, an air inlet is formed in one side face of the charger outer box, an air outlet with an exhaust fan is formed in the other side face, opposite to the air inlet, of the charger outer box, and pressure covers capable of closing and isolating the outside under the impact of the internal air pressure of the charger outer box are arranged on the air inlet and the air outlet; the charger outer box is provided with a power interface connected with commercial power and a battery interface connected with a battery of the electric vehicle; the battery protection component comprises a battery storage box made of metal compression-resistant materials, a storage battery and a cooling tank are arranged in the battery storage box, and the cooling tank can automatically open a valve of the battery storage box to release refrigerant under the impact of the internal air pressure of the battery storage box; the battery storage box is provided with a charging interface connected with the charger and a motor interface connected with the motor of the electric vehicle.

As a preferable aspect of the present invention, the charger protection member further includes a first high-pressure exhaust valve disposed at a position of the charger outer box near the air outlet.

As a preferable scheme of the present invention, the charger circuit board is connected with a first short circuit automatic protection switch.

As a preferable scheme of the invention, the whole inner side surface of the charger outer box is coated with an insulating flame-retardant glue layer.

In a preferred embodiment of the present invention, the thickness of the insulating flame retardant glue layer is 2 mm.

As a preferable aspect of the present invention, the battery protection member further includes a second high pressure vent valve provided at a position on a side of the battery storage case close to the cooling tub.

In a preferred embodiment of the present invention, the refrigerant is freon.

In a preferred embodiment of the present invention, the battery is connected to a second short circuit automatic protection switch.

As a preferable scheme of the invention, one side plate of the battery storage box is a push-pull cover plate.

As a preferable scheme of the invention, a sealing ring is arranged between the push-pull cover plate and the battery storage box.

As a preferable aspect of the present invention, the power interface is connected to a power plug, and a third short circuit automatic protection switch is built in the power plug.

Compared with the prior art, the explosion-proof and flammable-proof battery charging protection device for the electric vehicle has the beneficial effects that:

according to the invention, through the arrangement of the charger protection component and the battery protection component, under the condition of normal charging, the air inlet and the air outlet are both in an open state, so that the charger is kept in normal charging and ventilation, and internal and external air flows can be promoted through the exhaust fan if necessary, so that a good heat dissipation effect is achieved; when the charger is in short circuit combustion, the internal air pressure of the outer box of the charger is instantly increased, under the impact of strong pressure, the pressure covers on the air inlet and the air outlet are automatically closed and isolated from the outside under the impact, and the external air cannot enter the outer box of the charger, so that internal combustion objects are not self-extinguished by air; if the accumulator is short-circuit burnt during charging, walking and storing, the accumulator storage box produces instantaneous strong pressure to open the automatic valve of the cooling tank and spray refrigerant (such as Freon) gas to make the internal combustion matter not extinguish automatically, if the accumulator is short-circuit, the refrigerant gas will be converted into low-temperature gas or form water content during increasing the internal pressure, and the refrigerant gas will form ice block more quickly when the internal pressure is higher, thus playing the role of protection and explosion prevention. Therefore, the invention can solve the problem of disaster loss caused by battery short circuit explosion caused by self reasons in the charging process or in the driving and parking processes, and greatly improves the life safety guarantee.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly described below.

Fig. 1 is a schematic structural diagram of an explosion-proof and flammable-proof battery charging protection device for an electric vehicle, provided by the invention.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

As shown in fig. 1, an explosion-proof and inflammable battery charging protection device for an electric vehicle according to a preferred embodiment of the present invention includes a charger protection member 1 and a battery protection member 2; the charger protection component 1 comprises a charger outer box 11 made of metal pressure-resistant materials, a charger circuit board 12 is arranged in the charger outer box 11, an air inlet 13 is arranged on one side surface of the charger outer box 11, an air outlet 14 with an exhaust fan 15 is arranged on the other side surface of the charger outer box 11 opposite to the air inlet 13, and pressure covers 16 capable of closing and isolating the outside under the impact of the internal air pressure of the charger outer box 11 are arranged on the air inlet 13 and the air outlet 14; the charger outer box 11 is provided with a power interface 17 connected with commercial power and a battery interface 18 connected with a battery of the electric vehicle; the battery protection component 2 comprises a battery storage box 21 made of metal pressure-resistant materials, a storage battery 22 and a cooling tank 23 are arranged in the battery storage box 21, and the cooling tank 23 can automatically open a valve 24 of the cooling tank to release refrigerant under the impact of the internal air pressure of the battery storage box 21; the battery storage box 21 is provided with a charging interface 25 connected with a charger and a motor interface 26 connected with a motor of the electric vehicle.

According to the charging protection device for the explosion-proof and flammable-proof battery of the electric vehicle, which is disclosed by the embodiment of the invention, through the arrangement of the charger protection component 1 and the battery protection component 2, under the normal charging condition, the air inlet 13 and the air outlet 14 are both in an open state, the charger is kept in normal charging and ventilation, and internal and external air flow can be promoted through the exhaust fan 15 when necessary, so that a good heat dissipation effect is achieved; when the charger is in short circuit combustion, the internal air pressure of the outer charger box 11 is instantly increased, under the impact of strong pressure, the pressure covers 16 on the air inlet 13 and the air outlet 14 are automatically closed and isolated from the outside under the impact, and the external air cannot enter the outer charger box 11, so that internal combustion objects cannot be automatically extinguished by air; if the storage battery 22 is in short circuit combustion during charging or walking and storage, strong pressure is generated in the storage battery 21 instantly, the automatic valve 24 of the cooling tank 23 is opened, refrigerant (preferably Freon) gas is sprayed out, internal combustion matters are not rapidly extinguished without air, if the storage battery 22 is in short circuit and continuously generates heat, the refrigerant gas is converted into low-temperature gas or forms moisture under the action of pressure in the process of continuously increasing the internal pressure, the refrigerant gas can form ice blocks more quickly when the internal pressure is higher, and the functions of protection and explosion prevention are achieved. Therefore, the invention can solve the problem of disaster loss caused by battery short circuit explosion caused by self reasons in the charging process or in the driving and parking processes, and greatly improves the life safety guarantee.

Illustratively, the charger protection member 1 further comprises a first high-pressure exhaust valve 19, and the first high-pressure exhaust valve 19 is disposed on the charger outer box 11 near the air outlet 14. When the internal pressure of the charger outer box 11 is more than 20 kg, the first high-pressure exhaust valve 19 will be automatically opened, so that the whole protection process is kept in a safe state.

Illustratively, the charger circuit board 12 is connected with a first short circuit automatic protection switch. When the charger circuit board 12 is short-circuited, the first short-circuit automatic protection switch automatically disconnects the charger circuit.

Illustratively, the entire inner side of the charger housing 11 is coated with an insulating flame-retardant adhesive layer. The insulating flame-retardant glue layer is about 2 mm.

Illustratively, the battery protection member 2 further includes a second high pressure vent valve 27, and the second high pressure vent valve 27 is disposed at a position on the side of the battery storage tank 21 close to the cooling tank 23. When the internal pressure of the charger outer box 11 is more than 20 kg, the second high-pressure exhaust valve 27 is automatically opened, so that the whole protection process is kept in a safe state. In this embodiment, there are 2 second high-pressure exhaust valves 27.

Illustratively, a second short-circuit automatic protection switch is connected to the battery 22. The second short circuit automatic protection switch automatically opens the battery 22 circuit when the battery 22 is short circuited or fails.

Illustratively, a side plate of the battery storage box 21 is a push-pull cover 28 to facilitate installation and replacement of the battery 22.

Illustratively, a sealing ring is arranged between the push-pull cover plate 28 and the battery storage box 21 to improve the sealing performance of the battery storage box 21.

Illustratively, the power interface 17 is connected with a power plug 3, and a third short-circuit automatic protection switch is built in the power plug 3. When the external power supply has a short circuit or a leakage fault, the third short circuit automatic protection switch is automatically switched off to stop the external power supply from charging the electric vehicle.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.