Protection system for a vehicle battery

Abstract

The utility model discloses a protection system for a vehicle battery, which comprises a protection shell and an explosion-proof component, and the protection shell is provided with a battery pack mounting cavity for accommodating a vehicle-mounted battery; the explosion-proof assembly comprises a storage tank, a fire extinguishing medium is arranged in the storage tank, the storage tank is communicated with the battery pack mounting cavity, and the fire extinguishing medium is controllably conveyed to the battery pack mounting cavity from the storage tank, or the fire extinguishing medium is controllably stored in the storage tank; the safety protection coefficient of the battery pack can be improved, particularly the fire and explosion risk of a vehicle-mounted battery is reduced, and the safety coefficient of a vehicle is improved.

Description

Technical Field

[0001] This utility model relates to the field of vehicle battery protection, specifically to a protection system for vehicle batteries. Background Technology

[0002] New energy vehicles refer to automobiles that use unconventional vehicle fuels as their power source and integrate advanced technologies in vehicle power control and drive, resulting in vehicles with advanced technical principles and new technologies and structures. New energy vehicles include pure electric vehicles, range-extended electric vehicles, hybrid electric vehicles, fuel cell electric vehicles, and hydrogen engine vehicles. Batteries are the primary power source for new energy vehicles, providing power for the vehicle's movement. To increase battery safety during use, enhanced battery protection is necessary.

[0003] Existing battery protection systems rely solely on cooling structures to protect vehicle batteries. While the outer casing and liquid cooling plate of the vehicle battery provide some protection, this structure is relatively conventional and has its limits in terms of stress resistance. The protection is relatively weak and can deform, which could compress the battery pack and cause it to catch fire or explode. Existing cooling structures cannot solve this problem and pose certain safety hazards.

[0004] Therefore, to solve the above problems, a protection system for vehicle batteries is needed to improve the safety protection factor of the battery pack, especially to reduce the risk of fire and explosion of the vehicle battery and improve the safety factor of the vehicle. Utility Model Content

[0005] In view of this, the purpose of this utility model is to overcome the defects in the prior art and provide a protection system for vehicle batteries that can improve the safety protection factor of the battery pack, especially reduce the risk of fire and explosion of the vehicle battery, and improve the safety factor of the vehicle.

[0006] The present invention discloses a protective system for vehicle batteries, comprising a protective shell and an explosion-proof component. The protective shell has a battery pack mounting cavity for accommodating the vehicle battery. The explosion-proof component includes a storage tank containing a fire extinguishing medium. The storage tank is connected to the battery pack mounting cavity. The fire extinguishing medium is controlled to be transported from the storage tank to the battery pack mounting cavity, or the fire extinguishing medium is controlled to be stored in the storage tank.

[0007] Furthermore, it also includes a temperature monitoring element, which is disposed in the battery pack mounting cavity to detect the temperature of the vehicle battery, and the temperature monitoring element is communicatively connected to the vehicle control system.

[0008] Furthermore, the extinguishing medium is fluid, and a feeding pump is installed on the channel connecting the storage tank and the battery pack installation cavity. The feeding pump is communicatively connected to the vehicle control system, and the feeding pump is controlled to start or stop.

[0009] Furthermore, the storage tank is connected to the battery pack mounting cavity via a conveying pipe, the conveying pipe having a nozzle extending into the battery pack mounting cavity, and the nozzle having several dispensing holes.

[0010] Furthermore, a support pad is arranged between the vehicle battery and the inner wall of the battery pack mounting cavity.

[0011] Furthermore, the support pads are a plurality of those distributed on the outer wall of the vehicle battery, and the plurality of support pads are disposed on the inner wall of the battery pack mounting cavity.

[0012] Furthermore, a buffer layer is provided between the vehicle battery and the inner wall of the battery pack mounting cavity, the buffer layer surrounding the vehicle battery circumferentially, and flame-retardant filler is provided inside the buffer layer.

[0013] Furthermore, the buffer interlayer is also provided with supporting corrugations, which divide the buffer interlayer into several filling cavities, and the flame-retardant filler is disposed in the filling cavities.

[0014] Furthermore, the protective shell includes an upper shell and a lower shell, and a battery pack mounting cavity for installing the vehicle battery is formed between the upper shell and the lower shell;

[0015] The bottom periphery of the upper shell is turned outward to form an upper sealing plate, and the top periphery of the lower shell is turned outward to form a lower sealing plate. A sealing gasket is provided between the upper sealing plate and the lower sealing plate. The upper sealing plate and the lower sealing plate are assembled in a detachable manner, and the assembled upper sealing plate and the lower sealing plate press the sealing gasket tightly.

[0016] Furthermore, it also includes a cooling component, which includes a cooling plate for cooling the protective shell, the cooling plate being close to or in contact with the protective shell.

[0017] The beneficial effects of this utility model are as follows: The protection system for vehicle batteries disclosed in this utility model can be activated when the temperature inside the battery box runs out of control by setting explosion-proof components. It is not afraid of battery pack fire and explosion caused by battery deformation. It can directly cool down heat sources or even fire sources and can directly extinguish fires to prevent explosions, thus greatly improving vehicle safety. It can improve the safety protection coefficient of the battery pack and improve the safety coefficient of the vehicle. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the cross-sectional structure of the present invention through the longitudinal centerline;

[0021] Figure 3 This is a schematic diagram of the bottom structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the lower shell of this utility model.

[0023] Explanation of reference numerals in the attached drawings: Battery pack mounting cavity 001, upper housing 1, lower housing 2, upper sealing plate 3, lower sealing plate 4, storage tank 5, temperature monitoring element 6, feeding pump 7, conveying pipe 8, nozzle 9, support pad 10, flame retardant filler 11, support corrugated 12, sealing gasket 13, heat dissipation pipe 14, water tank 15, water pump 16, condenser 17, outer protective housing 18. Detailed Implementation

[0024] Figure 1 As shown in the schematic diagram of this utility model, the protection system for vehicle batteries in this embodiment includes a protective shell and an explosion-proof component. The protective shell has a battery pack mounting cavity 001 for accommodating the vehicle battery. The explosion-proof component includes a storage tank 5, which contains a fire extinguishing medium. The storage tank 5 is connected to the battery pack mounting cavity 001. The fire extinguishing medium is controlled to be transported from the storage tank 5 to the battery pack mounting cavity 001, or the fire extinguishing medium is controlled to be stored in the storage tank 5. By using the explosion-proof component, it can be activated when the temperature inside the battery pack runs out of control. It is not afraid of battery pack fires and explosions caused by battery deformation, and can directly cool down heat sources and even fire sources, and can directly extinguish fires to prevent explosions, thus greatly improving vehicle safety. It can improve the safety protection coefficient of the battery pack and the safety coefficient of the vehicle.

[0025] In this embodiment, a temperature monitoring element 6 is also included. This element is disposed within the battery pack mounting cavity 001 to detect the temperature of the vehicle battery. The temperature monitoring element 6 is communicatively connected to the vehicle control system. The temperature monitoring element 6 in this solution can be any type of temperature sensor in the prior art. It communicates with the vehicle control system using existing technology to achieve temperature feedback at a specified location, which will not be elaborated further here. Furthermore, this solution uses several temperature sensors distributed circumferentially and vertically on the outer wall of the vehicle battery, enabling timely monitoring of the vehicle battery temperature and feedback to the vehicle control system. This facilitates the timely activation of explosion-proof components, preventing battery pack fires and explosions, thus enhancing vehicle safety.

[0026] In this embodiment, the extinguishing medium is fluid. A feeding pump 7 is installed on the channel connecting the storage tank 5 and the battery pack mounting cavity 001. The feeding pump 7 is communicatively connected to the vehicle control system, and its start-up or stop is controlled. When the feeding pump 7 is running, the extinguishing medium is transported from the storage tank 5 to the battery pack mounting cavity 001; when the feeding pump 7 is stopped, the extinguishing medium is stored in the storage tank 5. In this solution, the extinguishing medium is a foam extinguishing agent, possessing both extinguishing capability and fluidity. The feeding pump 7 is any existing water pump, and its start-up and stop-down are controlled by feedback information from the temperature monitoring element 6, communicating with the vehicle control system. It has sufficient power and rapid response capability to deliver the extinguishing medium to the battery pack mounting cavity 001 for cooling the vehicle battery. The structure is simple and the operation is stable.

[0027] In this embodiment, the storage tank 5 is connected to the battery pack mounting cavity 001 via a conveying pipe 8. The conveying pipe 8 has a nozzle 9 extending into the battery pack mounting cavity 001, and the nozzle 9 has several dispersing holes. The nozzle 9 increases the area for introducing the extinguishing medium. During use, the extinguishing medium is sprayed from the dispersing holes to cover the designated location of the vehicle battery. In this design, the nozzle 9 is located at the top of the battery pack mounting cavity 001, allowing the sprayed extinguishing medium to gradually fall under gravity. The continuous spraying from the nozzle 9 also blocks the ignition point, reduces the oxygen content, and improves the fire extinguishing and explosion-proof effects.

[0028] In this embodiment, a support pad 10 is arranged between the vehicle battery and the inner wall of the battery pack mounting cavity 001. This allows for a predetermined gap between the vehicle battery and the inner wall of the battery pack mounting cavity 001, facilitating the self-heating of the vehicle battery and the flow of the fire extinguishing medium. Furthermore, the support pad 10 also serves as a vibration damping and buffering mechanism, reducing deformation of the vehicle battery caused by external environmental factors such as impacts, and lowering the risk of fire and explosion.

[0029] In this embodiment, the support pads 10 are distributed on the outer wall of the vehicle battery, and the support pads 10 are arranged on the inner wall of the battery pack mounting cavity 001. In this design, the support pads 10 are distributed both circumferentially and vertically on the inner wall of the battery pack mounting cavity 001. The vehicle battery is confined within the inner wall of the battery pack mounting cavity 001 by the support pads 10, resulting in a more stable overall structure. This further satisfies the multi-hole heat dissipation requirements of the vehicle battery and the fire protection requirements of the multi-channel flow of the fire extinguishing medium. The fire extinguishing medium can fill the battery pack mounting cavity 001 more quickly, improving flame retardant and explosion-proof efficiency. The support pads 10 in this design are rubber products with cushioning capacity and high-temperature resistance.

[0030] In this embodiment, a buffer layer is further provided between the vehicle battery and the inner wall of the battery pack mounting cavity 001. The buffer layer surrounds the vehicle battery circumferentially, and a flame-retardant filler 11 is disposed within the buffer layer. The buffer layer and the flame-retardant filler 11 disposed within it can buffer impacts, provide multiple layers of protection for the vehicle battery, and also have a flame-retardant effect, preventing the internal battery ignition point from spreading outward, thus improving vehicle safety. The flame-retardant filler 11 in this solution is preferably flame-retardant foam.

[0031] In this embodiment, the buffer interlayer is further provided with supporting corrugations 12, which divide the buffer interlayer into several filling cavities, and the flame-retardant filler 11 is disposed in the filling cavities. The provision of supporting corrugations 12 can improve the buffering capacity of the buffer interlayer and provide sufficient supporting strength. In this solution, there are several supporting corrugations 12, which are also inclined along a set direction and arranged at equal intervals, thereby improving the structural strength and buffering capacity of the battery pack mounting cavity 001 and resulting in a better protective effect.

[0032] In this embodiment, the protective shell includes an upper shell 1 and a lower shell 2, and a battery pack mounting cavity 001 for installing a vehicle battery is formed between the upper shell 1 and the lower shell 2;

[0033] The bottom periphery of the upper housing 1 is flanged outward to form an upper sealing plate 3, and the top periphery of the lower housing 2 is flanged outward to form a lower sealing plate 4. A sealing gasket 13 is provided between the upper sealing plate 3 and the lower sealing plate 4. The upper sealing plate 3 and the lower sealing plate 4 are assembled in a detachable manner. In this solution, the upper sealing plate 3 and the lower sealing plate 4 are detachably connected by bolts, and the assembled upper sealing plate 3 and the lower sealing plate 4 press the sealing gasket 13 tightly. The setting of the sealing gasket 13 can ensure the airtightness of the battery pack mounting cavity 001, prevent the influence of the external environment on the internal environment, and also prevent oxygen from entering the battery pack mounting cavity 001, thus improving safety.

[0034] In this embodiment, a cooling component is also included, which includes a cooling plate for cooling the protective shell, and the cooling plate is close to or attached to the protective shell. The cooling component further reduces the operating temperature of the vehicle battery inside the protective shell, reducing the risk of spontaneous combustion or explosion caused by overheating and improving safety. In this solution, the cooling plate is a heat dissipation pipe 14. The cooling component also includes a water tank 15, a water pump 16, a condenser 17, and an outer protective shell 18. The outer protective shell 18 surrounds the lower shell 2 circumferentially on the outside of the lower shell 2, and the bottom of the outer protective shell 18 extends beyond the bottom of the lower shell 2, so that the bottom of the lower shell 2 has a layer of a predetermined height. The heat dissipation pipe 14 is arranged in a repeatedly bent shape within the layer. The inlet and outlet of the heat dissipation pipe 14 are connected to the water tank 15. The water pump 16 is located at the inlet of the heat dissipation pipe 14, and the condenser 17 is located on the water tank 15 for cooling the high-temperature cooling medium. The water pump 16 and the condenser 17 in the cooling component can be any of the existing technologies to achieve the intended purpose, which will not be elaborated further here.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A protection system for vehicle batteries, characterized in that: The device includes a protective housing and an explosion-proof component. The protective housing has a battery pack mounting cavity for accommodating an onboard battery. The explosion-proof component includes a storage tank containing a fire extinguishing medium. The storage tank is in communication with the battery pack mounting cavity. The fire extinguishing medium is controlled to be delivered from the storage tank to the battery pack mounting cavity, or the fire extinguishing medium is controlled to be stored in the storage tank.

2. The protection system for vehicle batteries according to claim 1, characterized in that: It also includes a temperature monitoring element, which is installed in the battery pack mounting cavity to detect the temperature of the vehicle battery, and the temperature monitoring element is communicatively connected to the vehicle control system.

3. The protection system for vehicle batteries according to claim 2, characterized in that: The extinguishing medium is fluid, and a feeding pump is installed on the channel connecting the storage tank and the battery pack installation cavity. The feeding pump is communicatively connected to the vehicle control system, and the feeding pump is controlled to start or stop.

4. The protection system for vehicle batteries according to claim 1, characterized in that: The storage tank and the battery pack mounting cavity are connected by a conveying pipe. The conveying pipe has a nozzle that extends into the battery pack mounting cavity, and the nozzle has several dispensing holes.

5. The protection system for vehicle batteries according to claim 1, characterized in that: A support pad is arranged between the vehicle battery and the inner wall of the battery pack mounting cavity.

6. The protection system for vehicle batteries according to claim 5, characterized in that: The support pads are a plurality of those distributed on the outer wall of the vehicle battery, and the plurality of the support pads are arranged on the inner wall of the battery pack mounting cavity.

7. The protection system for vehicle batteries according to claim 1, characterized in that: There is also a buffer layer between the vehicle battery and the inner wall of the battery pack mounting cavity. The buffer layer surrounds the vehicle battery circumferentially and is filled with flame-retardant filler.

8. The protection system for vehicle batteries according to claim 7, characterized in that: The buffer interlayer is also provided with supporting corrugations, which divide the buffer interlayer into several filling cavities, and the flame-retardant filler is placed in the filling cavities.

9. The protection system for vehicle batteries according to claim 1, characterized in that: The protective shell includes an upper shell and a lower shell, and a battery pack mounting cavity for installing the vehicle battery is formed between the upper shell and the lower shell; The bottom periphery of the upper shell is turned outward to form an upper sealing plate, and the top periphery of the lower shell is turned outward to form a lower sealing plate. A sealing gasket is provided between the upper sealing plate and the lower sealing plate. The upper sealing plate and the lower sealing plate are assembled in a detachable manner, and the assembled upper sealing plate and the lower sealing plate press the sealing gasket tightly.

10. The protection system for a vehicle battery according to claim 1, characterized in that: It also includes a cooling component, which includes a cooling plate for cooling the protective shell, the cooling plate being close to or in contact with the protective shell.

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