A plastic casing for energy storage battery with reinforced structure

Abstract

The application relates to the technical field of battery housings, in particular to a plastic energy storage battery housing with a reinforcing structure, which comprises a battery box, a front cover, a numerical control panel, a heat exchange box, a heat dissipation box, a heat dissipation mechanism, a buffer cylinder, a buffer mechanism, a micro-motion box and a circuit breaking mechanism. The application is characterized in that the battery housing is designed in a single-side upright cuboid battery compartment, so that part of the battery housing can stably bear the weight of multiple stacked battery modules. The heat dissipation mechanism can deliver cooling liquid to the battery groups, so that the cooling liquid can effectively exchange heat with the adjacent surfaces of the battery groups. The buffer mechanism can discharge part of the high-temperature expanded cooling liquid into the buffer container, so that the buffer container can self-adaptively stabilize the hydraulic pressure of the cooling liquid. The circuit breaking mechanism can automatically cut off the power supply of the battery groups in a high-temperature environment, effectively avoiding the damage of self-ignition caused by the long-time operation of part of the battery groups in the high-temperature environment, and improving the stability, efficiency and protection of the device.

Description

Technical Field

[0001] This invention relates to the field of battery casing technology, specifically to a plastic casing for an energy storage battery with a reinforced structure. Background Technology

[0002] With the development of energy storage technology, battery capacity and energy density are constantly increasing. Energy storage battery products often use a method of vertically stacking multiple small-capacity battery modules to form large-capacity battery modules for capacity expansion. This requires the battery casing to have higher strength and stability to withstand the weight of multiple stacked battery modules. As the application of energy storage batteries becomes more widespread, relevant industry standards and regulations have placed higher demands on battery safety and reliability. Energy storage battery plastic casings with reinforced structures can better meet these standards and regulations, such as improving the casing's puncture resistance, fire resistance, and waterproofing, thereby ensuring the safe operation of the battery in various environments.

[0003] With the rapid development of the energy storage industry, controlling battery costs has become particularly important. Traditional methods of increasing strength by adding thickness to metal materials or using metal casings significantly increase production costs. However, using plastic casings with a well-designed reinforcing structure can reduce material and manufacturing costs while maintaining casing strength. Traditional plastic casings often lack sufficient strength, while all-metal casings or structures using die-cast aluminum alloy supports in certain areas suffer from problems such as heavy weight, high cost, and monotonous design. Existing devices primarily use alloy casings as the battery box material. Existing technologies are largely similar to a lightweight energy storage battery box alloy casing and its usage method. The structure disclosed in CN115764110B includes a storage box, a lid, and a mounting bracket. The storage box contains a battery pack fixing mechanism. The lid is horizontally positioned above the storage box, and both ends of the lid's top are equipped with heat dissipation mechanisms to assist in heat dissipation. The bottom center of the lid has a flow mechanism to ensure uniform temperature distribution inside the storage box. The battery pack fixing mechanism abuts against the lid. The storage box has a fixing mechanism for securing the lid. The mounting bracket is located on one side of the storage box and has a cleaning mechanism for cleaning dust from the storage box surface. This invention can clean dust adhering to the storage box surface, ensuring the cleanliness of the storage box while accelerating heat dissipation from the battery pack. Furthermore, heat dissipation of the storage box only requires the vibration of a moving vehicle, improving the storage box's performance. However, there are still areas for improvement in this device.

[0004] Existing devices primarily use hollow box structures to store battery packs, making it difficult to design reasonable reinforcement structures in some battery boxes to stably support the battery packs. Consequently, some casings cannot withstand the weight of multiple stacked battery modules. Secondly, existing devices mainly place heat dissipation components on the inner wall of the battery casing, making it difficult for some devices to effectively exchange heat between adjacent battery packs, thus hindering efficient cooling of the battery packs. Furthermore, some devices rely on coolant to absorb heat from the battery packs, making it difficult for some high-temperature expanding coolant to enter the drainage buffer container, resulting in deformation of some battery boxes and heat exchange chambers under pressure. Finally, some battery packs cannot automatically cut off power in high-temperature environments, effectively preventing some battery packs from operating in high-temperature environments for extended periods. This can lead to damage and spontaneous combustion of some battery packs, reducing the device's efficiency and practicality. Therefore, to solve the above problems, a reinforced plastic casing for energy storage batteries is proposed. Summary of the Invention

[0005] The purpose of this invention is to provide a reinforced plastic casing for energy storage batteries, addressing the issues mentioned in the background section. Existing devices primarily use hollow box structures to store battery packs, making it difficult to design reasonable reinforcing structures to stably support the battery packs, thus causing some casings to be unable to withstand the weight of multiple stacked battery modules. Secondly, existing devices mainly place heat dissipation components on the inner wall of the battery casing, making it difficult for some devices to effectively exchange heat between adjacent battery packs, resulting in inefficient cooling of the battery packs. Furthermore, some devices rely on coolant to absorb the heat from the battery packs, making it difficult for some of the high-temperature expanding coolant to enter the buffer container, leading to deformation of some battery boxes and heat exchange chambers under pressure. Finally, some battery packs cannot automatically cut off power in high-temperature environments, effectively preventing some battery packs from operating for extended periods in high-temperature environments, thus avoiding the problem of some battery packs being easily damaged and spontaneously combusted.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a plastic housing for an energy storage battery with a reinforced structure, comprising a battery box, a front cover fixedly connected to the front side of the battery box, a CNC panel fixedly disposed in the front center of the front cover, a positive terminal connector fixedly disposed in the upper left side of the front cover, and a negative terminal connector fixedly disposed in the lower left side of the front cover.

[0007] A heat exchange box is fixedly connected to the rear side of the battery box, and a heat dissipation box is fixedly connected to the rear side of the heat exchange box. A heat dissipation mechanism is provided inside the battery box.

[0008] A buffer cylinder is fixedly installed on the left side inside the battery box. The buffer cylinder is equipped with a buffer mechanism. A micro-motion box is fixedly connected to the left side behind the front cover. The micro-motion box is equipped with a high-temperature circuit breaking mechanism.

[0009] Preferably, the heat dissipation mechanism includes an elastic buffer sleeve, which is fixedly fitted onto the outer wall of the battery box. The battery box has a battery compartment inside, which is a rectangular parallelepiped with one side upright. A battery pack is placed inside the battery compartment.

[0010] Preferably, a cooling channel is provided inside the battery box in the triangular area between the battery compartments. A diversion pipe is fixedly connected to the rear side of the cooling channel. The rear end of the main pipe of the diversion pipe passes through the heat exchange box and is fixedly connected to an expansion valve.

[0011] Preferably, the other end of the expansion valve is fixedly connected to a heat dissipation pipe, a compression pump is fixedly connected to the rear left side of the heat exchange box, the right end of the heat dissipation pipe passes through the heat exchange box and is fixedly connected to the right middle part of the compression pump, and a cooling fan is fixedly installed on the rear side wall of the heat exchange box.

[0012] Preferably, the buffer mechanism includes a connecting pipe, one end of which is fixedly connected to the middle right side of the heat exchange box, and the other end of which is fixedly connected to the middle rear side of the buffer cylinder. A piston is movably installed in the middle of the interior of the buffer cylinder.

[0013] Preferably, a push rod is fixedly connected to the front center of the piston, the front end of the push rod passes through the buffer cylinder and is fixedly connected to a top head, and a buffer spring is fixedly connected to the front of the piston on the outer ring of the push rod, and the front end of the buffer spring is fixedly connected to the front side of the inner wall of the buffer cylinder.

[0014] Preferably, the high-temperature circuit breaker mechanism includes a positive electrode strip, which is fixedly installed on the upper rear side of the front cover. The rear end of the positive electrode connector is fixedly connected to the left side of the positive electrode strip. A negative electrode strip is fixedly installed on the lower rear side of the front cover. A lap bridge is rotatably connected to the rear side of the front cover below the negative electrode connector. The right end of the lap bridge overlaps the left side of the negative electrode strip.

[0015] Preferably, an electromagnet is fixedly connected to the top of the micro-motion box above the bridge, a circuit breaking spring is fixedly connected to the bottom right side of the bridge, a pin is fixedly connected to the bottom end of the circuit breaking spring, and the bottom of the pin is fixedly connected to the lower inner wall of the micro-motion box.

[0016] Preferably, a clip is fixedly connected to the lower left side of the outer wall of the bridge, and a brake is attached to the left end of the clip. The brake is mainly composed of a large cylinder and a small cylinder stacked together. The small cylinder at the rear end of the brake passes through the micro-motion box and is fixedly connected to a trigger block.

[0017] Preferably, the trigger block is positioned directly in front of the top head, and a trigger spring is fixedly connected to the front of the trigger block on the outer ring of the brake component. The front end of the trigger spring is fixedly connected to the lower left corner of the rear side of the micro-motion box.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] 1. The present invention adopts a rectangular battery compartment design with one side upright, which allows part of the battery casing to stably support the battery pack and easily withstand the weight of multiple battery modules stacked together. At the same time, the elastic buffer sleeve can effectively buffer and protect the battery box, improving the stability and practicality of the device.

[0020] 2. The present invention can deliver coolant to the battery pack through a heat dissipation mechanism, which facilitates effective heat exchange between adjacent surfaces of the battery pack and enables efficient cooling of the battery pack, thereby improving the efficiency and practicality of the device.

[0021] 3. The present invention uses a buffer mechanism to discharge some of the high-temperature expanding coolant into a buffer container, which allows the buffer container to adapt to and stabilize the hydraulic pressure of the coolant, effectively preventing excessive pressure deformation of the battery box and heat exchange box, and improving the protection and practicality of the device.

[0022] 4. This invention can monitor the operating environment of the battery pack in real time through a high-temperature circuit breaking mechanism, so that the battery pack can automatically cut off the power supply in a high-temperature environment, effectively avoiding damage and spontaneous combustion of some battery packs due to long-term operation in a high-temperature environment, and improving the protection and practicality of the device. Attached Figure Description

[0023] Figure 1 This is a front side perspective view of the structure of the present invention;

[0024] Figure 2 This is a perspective view of the rear side of the structure of the present invention;

[0025] Figure 3 This is a perspective view of the left side of a partial structure of the present invention;

[0026] Figure 4 This is a left-side sectional perspective view of a partial structure of the battery box and heat dissipation mechanism of the present invention;

[0027] Figure 5 This is a top sectional perspective view of a partial structure of the battery box and heat dissipation mechanism of the present invention;

[0028] Figure 6 This is a left-side sectional perspective view of a partial structure of the buffer cylinder and buffer mechanism of the present invention;

[0029] Figure 7 This is a perspective view of the back side of the front cover structure of the present invention;

[0030] Figure 8 This is a left-side sectional perspective view of a partial structure of the micro-motion box and high-temperature circuit breaker mechanism of the present invention.

[0031] In the diagram: 101, Battery box; 102, Front cover; 103, CNC panel; 104, Positive terminal connector; 105, Negative terminal connector; 106, Heat exchange box; 107, Heat dissipation box; 108, Buffer cylinder; 109, Micro-motion box; 2, Heat dissipation mechanism; 201, Elastic buffer sleeve; 202, Battery compartment; 203, Battery pack; 204, Cooling channel; 205, Diverter pipe; 206, Expansion valve; 207, Heat dissipation pipe; 208, Pressure... 209. Pump; 3. Cooling fan; 4. Buffer mechanism; 5. Connecting pipe; 6. Piston; 7. Push rod; 8. Top head; 9. Buffer spring; 10. High temperature circuit breaker mechanism; 11. Positive terminal strip; 22. Negative terminal strip; 33. Overlap bridge; 44. Clip; 5. Electromagnet; 6. Circuit breaker tension spring; 7. Pin; 8. Braking component; 9. Trigger block; 10. Trigger compression spring. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Please see Figures 1-8 One embodiment provided by the present invention:

[0034] A reinforced plastic casing for an energy storage battery includes a battery box 101. A front cover 102 is fixedly connected to the front side of the battery box 101. A CNC panel 103 is fixedly mounted in the center of the front of the front cover 102. A positive terminal connector 104 is fixedly mounted on the upper left side of the front cover 102, and a negative terminal connector 105 is fixedly mounted on the lower left side of the front cover 102. A heat exchange box 106 is fixedly connected to the rear side of the battery box 101. A heat dissipation box 107 is fixedly connected to the rear side of the heat exchange box 106. A heat dissipation mechanism 2 is provided inside the battery box 101. A buffer cylinder 108 is fixedly mounted on the left side of the battery box 101. A buffer mechanism 3 is provided inside the buffer cylinder 108. A micro-motion box 109 is fixedly connected to the left rear of the front cover 102. A high-temperature circuit breaking mechanism 4 is provided inside the micro-motion box 109.

[0035] The heat dissipation mechanism 2 includes an elastic buffer sleeve 201, which is fixedly fitted onto the outer wall of the battery box 101. The battery box 101 has an internal battery compartment 202, which is a rectangular parallelepiped with one side upright. The battery pack 203 is housed inside the battery compartment 202. This design effectively cushions and protects the battery box 101 with the elastic buffer sleeve 201, while the placement structure of the battery compartment 202 effectively enhances the overall strength of the battery box 101.

[0036] A cooling channel 204 is formed within the triangular area between the battery compartments 202 inside the battery box 101. A branch pipe 205 is fixedly connected to the rear side of the cooling channel 204. The rear end of the main pipe of the branch pipe 205 passes through the heat exchange box 106 and is fixedly connected to an expansion valve 206. Through this design, the expansion valve 206 inputs low-temperature, normal-pressure coolant into the cooling channel 204 through the branch pipe 205, allowing the cooling channel 204 to exchange heat and cool the battery pack 203 inside the battery compartment 202 through the coolant.

[0037] The other end of the expansion valve 206 is fixedly connected to a heat dissipation pipe 207. A compression pump 208 is fixedly connected to the rear left side of the heat exchange box 106. The right end of the heat dissipation pipe 207 passes through the heat exchange box 106 and is fixedly connected to the middle right side of the compression pump 208. A cooling fan 209 is fixedly installed on the rear side wall of the heat exchange box 106. Through this design, the compression pump 208 compresses the coolant inside the heat exchange box 106 into a high-pressure, high-temperature state and delivers it to the interior of the heat dissipation pipe 207. The cooling fan 209 dissipates heat from the high-pressure, high-temperature coolant, facilitating rapid sealing and cooling of the coolant.

[0038] The buffer mechanism 3 includes a connecting pipe 301. One end of the connecting pipe 301 is fixedly connected to the middle right side of the heat exchange box 106, and the other end is fixedly connected to the middle rear side of the buffer cylinder 108. A piston 302 is movably installed in the middle of the interior of the buffer cylinder 108. Through this design, the connecting pipe 301 can connect the heat exchange box 106 and the buffer cylinder 108, allowing the high-temperature expanding coolant to enter the buffer cylinder 108, effectively preventing the battery box 101 and the heat exchange box 106 from being deformed under pressure.

[0039] A push rod 303 is fixedly connected to the front center of the piston 302. The front end of the push rod 303 passes through the buffer cylinder 108 and is fixedly connected to a top head 304. A buffer spring 305 is fixedly connected to the front of the piston 302, located on the outer ring of the push rod 303. The front end of the buffer spring 305 is fixedly connected to the front side of the inner wall of the buffer cylinder 108. This design allows the coolant to push the piston 302 forward and compress the buffer spring 305, effectively reducing the pressure on the battery box 101 and the heat exchange box 106.

[0040] The high-temperature circuit breaker mechanism 4 includes a positive electrode strip 401, which is fixedly mounted on the upper rear side of the front cover 102. The rear end of the positive electrode connector 104 is fixedly connected to the left side of the positive electrode strip 401. A negative electrode strip 402 is fixedly mounted on the lower rear side of the front cover 102. A bridge 403 is rotatably connected to the rear side of the front cover 102 below the negative electrode connector 105. The right end of the bridge 403 overlaps the left side of the negative electrode strip 402. Through this design, multiple battery packs 203 can be connected in parallel via the positive electrode strip 401 and the negative electrode strip 402, while the circuit of the negative electrode connector 105 is disconnected through the bridge 403.

[0041] An electromagnet 405 is fixedly connected to the top of the micro switch box 109 above the connecting bridge 403. A circuit-breaking tension spring 406 is fixedly connected to the bottom right side of the connecting bridge 403. A pin 407 is fixedly connected to the bottom end of the circuit-breaking tension spring 406, and the bottom of the pin 407 is fixedly connected to the lower inner wall of the micro switch box 109. Through this design, the circuit-breaking tension spring 406 can pull the connecting bridge 403 to rotate clockwise and disengage from the negative terminal strip 402 to break the circuit. At the same time, the rotation amplitude of the connecting bridge 403 can be effectively controlled by the pin 407.

[0042] A retaining element 404 is fixedly connected to the lower left side of the outer wall of the lap bridge 403. The left end of the retaining element 404 is closely attached to the brake element 408, which is mainly composed of a large cylinder and a stack of small cylinders. The small cylinder at the rear end of the brake element 408 passes through the micro-motion box 109 and is fixedly connected to the trigger block 409. Through this design, the brake element 408 can limit the braking of the retaining element 404 and the lap bridge 403, effectively preventing the lap bridge 403 from rotating.

[0043] The trigger block 409 is positioned directly in front of the top head 304. A trigger spring 410 is fixedly connected to the front of the trigger block 409, located on the outer ring of the brake element 408. The front end of the trigger spring 410 is fixedly connected to the lower left rear corner of the micro-motion box 109. This design allows the top head 304 to drive the trigger block 409 forward, releasing the trigger block 409 from braking the brake element 404. Simultaneously, the trigger spring 410 automatically resets the trigger block 409 and the brake element 408.

[0044] Working principle: When it is necessary to dissipate heat from the battery pack 203, the compression pump 208 and the cooling fan 209 are first started through the CNC panel 103. The compression pump 208 compresses the coolant inside the heat exchange box 106 into a high-pressure and high-temperature state and delivers it to the inside of the heat dissipation pipe 207. The cooling fan 209 dissipates heat from the high-pressure and high-temperature coolant. Then, through the expansion valve 206 and the diversion pipe 205, low-temperature and normal-pressure coolant is input into the cooling channel 204. The coolant in the cooling channel 204 exchanges heat with the battery pack 203, thus realizing the heat dissipation operation of the battery pack 203.

[0045] When it is necessary to reduce the pressure of the coolant, the high-temperature expanding coolant is first introduced into the buffer cylinder 108 through the connecting pipe 301. The coolant pushes the piston 302 to slide forward. The piston 302 drives the push rod 303 to slide in a limited position. At the same time, the piston 302 reduces the pressure of the coolant inside the battery box 101 and the heat exchange box 106 by compressing the buffer spring 305, thus realizing the pressure reduction and buffering operation of the coolant.

[0046] When the circuit needs to be disconnected, the coolant first absorbs heat and expands, pushing the piston 302 and push rod 303 forward. The push rod 303 drives the top head 304 to slide synchronously. After the top head 304 moves a certain distance, it presses the trigger block 409. The trigger block 409 compresses the trigger spring 410 and releases the brake on the clip 404. The circuit breaking spring 406 can pull the connecting bridge 403 to rotate clockwise, so that the connecting bridge 403 disengages from the negative terminal strip 402 to disconnect the circuit, thus realizing the circuit disconnection operation. The operation ends here.

[0047] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Those skilled in the art can readily implement the present invention based on the accompanying drawings and the above description. However, any modifications, alterations, or variations made by those skilled in the art without departing from the scope of the present invention, utilizing the disclosed technical content, are equivalent embodiments of the present invention. Furthermore, any modifications, alterations, or variations made to the above embodiments based on the essential technology of the present invention are still within the protection scope of the present invention.

Claims

1. A plastic casing for an energy storage battery with a reinforced structure, comprising a battery case (101), characterized in that: A front cover (102) is fixedly connected to the front side of the battery box (101). A CNC panel (103) is fixedly installed in the middle front of the front cover (102). A positive terminal connector (104) is fixedly installed on the upper left side of the front cover (102). A negative terminal connector (105) is fixedly installed on the lower left side of the front cover (102). A heat exchange box (106) is fixedly connected to the rear side inside the battery box (101). A heat dissipation box (107) is fixedly connected to the rear side of the heat exchange box (106). A heat dissipation mechanism (2) is provided inside the battery box (101). A buffer cylinder (108) is fixedly installed on the left side inside the battery box (101). A buffer mechanism (3) is provided inside the buffer cylinder (108). The buffer mechanism (3) includes a connecting pipe (301). One end of the connecting pipe (301) is fixedly connected to the middle right side of the heat exchange box (106). The other end of the connecting pipe (301) is fixedly connected to the middle rear side of the buffer cylinder (108). A piston (302) is movably installed in the middle inside the buffer cylinder (108). A push rod (303) is fixedly connected to the middle front of the piston (302). The front end of the push rod (303) passes through the buffer cylinder (108) and is fixedly connected to a top head (304). A buffer spring (305) is fixedly connected to the outer ring of the push rod (303) in front of the piston (302). The front end of the buffer spring (305) is fixedly connected to the front side of the inner wall of the buffer cylinder (108). A micro switch box (109) is fixedly connected to the rear left side of the front cover (102). The micro switch box (109) contains a circuit breaker mechanism (4). The circuit breaker mechanism (4) includes a positive electrode strip (401) and a trigger block (409). The positive electrode strip (401) is fixedly positioned above the rear side of the front cover (102). The rear end of the positive electrode connector (104) is fixedly connected to the left side of the positive electrode strip (401). A negative electrode strip (402) is fixedly positioned below the rear side of the front cover (102). A bridge (403) is rotatably connected below the negative terminal (105). The right end of the bridge (403) overlaps the left side of the negative terminal strip (402). An electromagnet (405) is fixedly connected to the top of the micro-motion box (109) above the bridge (403). A circuit breaking spring (406) is fixedly connected to the bottom right side of the bridge (403). A pin (407) is fixedly connected to the bottom end of the circuit breaking spring (406). The bottom of the pin (407) is fixedly connected to the lower inner wall of the micro-motion box (109). An electromagnet (405) is fixedly connected to the top of the micro-motion box (109) above the bridge (403). A circuit breaking spring (406) is fixedly connected to the bottom right side of the bridge (403). A pin (407) is fixedly connected to the bottom end of the circuit breaking spring (406). The bottom of the pin (407) is fixedly connected to the lower inner wall of the micro-motion box (109). The trigger block (409) is located directly in front of the top head (304). A trigger compression spring (410) is fixedly connected to the front of the trigger block (409) on the outer ring of the brake (408). The front end of the trigger compression spring (410) is fixedly connected to the lower left rear corner of the micro-motion box (109).

2. The energy storage battery plastic casing with a reinforced structure according to claim 1, characterized in that: The heat dissipation mechanism (2) includes an elastic buffer sleeve (201), which is fixedly fitted on the outer wall of the battery box (101). The battery box (101) has a battery compartment (202) inside. The battery compartment (202) is a rectangular parallelepiped with one side upright. The battery compartment (202) contains a battery pack (203).

3. The energy storage battery plastic casing with a reinforced structure according to claim 2, characterized in that: The battery box (101) has a cooling channel (204) located in the triangular area between the battery compartments (202). The rear side of the cooling channel (204) is fixedly connected to a branch pipe (205). The rear end of the main branch pipe (205) passes through the heat exchange box (106) and is fixedly connected to an expansion valve (206).

4. The energy storage battery plastic casing with a reinforced structure according to claim 3, characterized in that: The other end of the expansion valve (206) is fixedly connected to a heat dissipation pipe (207). A compression pump (208) is fixedly connected to the left rear side of the heat exchange box (106). The right end of the heat dissipation pipe (207) passes through the heat exchange box (106) and is fixedly connected to the middle right side of the compression pump (208). A cooling fan (209) is fixedly installed on the rear side wall of the heat exchange box (106).

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