Battery module and battery shell for electric automobile

Abstract

The invention discloses a battery module and a battery shell for an electric vehicle, the battery module comprises a protective shell, the protective shell is internally provided with a heat dissipation mechanism, the heat dissipation mechanism comprises a battery shell main body, the inner wall of the battery shell main body is fixedly connected with a fixed frame, and the outer surface of the fixed frame is fixedly connected with four first heat conduction plates; according to the battery module and the battery shell for the electric vehicle, uniform heat conduction is achieved through the multiple stages of heat conduction plates, local high-temperature accumulation is avoided, a closed-loop heat dissipation loop is formed through the condensate storage box, the conveying pipeline, the condensate conveying pipe and the recycling pipeline, heat dissipation efficiency is improved, and heat dissipation efficiency is improved. Condensate circularly flows in the pipeline and fully exchanges heat with the heat conducting plate, a large amount of heat is rapidly taken away, the temperature sensor is matched to monitor the temperature of the condensate in real time, the on-off state of the conveying valve is flexibly adjusted, it is ensured that the heat dissipation efficiency is matched according to needs, and the battery temperature is always controlled within a safe interval.

Description

Technical Field

[0001] This invention relates to the field of battery technology, specifically to a battery module and battery casing for electric vehicles. Background Technology

[0002] As the core power source of electric vehicles, the performance stability, safety and lifespan of batteries directly determine the vehicle's driving range, driving experience and safety. As the electric vehicle industry rapidly develops towards higher range and higher power, battery safety is becoming increasingly important.

[0003] During vehicle operation, battery modules inevitably face impacts and vibrations from complex road conditions, such as bumpy roads, emergency braking, or minor collisions. In addition, the driving environment of electric vehicles is complex, and the battery casing may be punctured by sharp objects. Existing battery casings have weak puncture resistance and mostly rely on a single metal casing for protection, lacking a multi-layered, high-strength puncture-resistant structural design. Once the casing is punctured, it can easily cause problems such as internal short circuits and electrolyte leakage, which can then induce serious safety accidents such as combustion and explosion, posing a significant threat to the life and property safety of passengers.

[0004] Combining the above issues, we find that existing battery casings are difficult to simultaneously avoid the problems mentioned above during use. Even if they can be solved, they require external tools, thus failing to achieve the desired effect. Therefore, we propose a battery module and battery casing for electric vehicles. Summary of the Invention

[0005] The purpose of this invention is to provide a battery module and battery casing for electric vehicles to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a battery module and battery casing for electric vehicles, comprising a protective casing, wherein a heat dissipation mechanism is provided inside the protective casing, the heat dissipation mechanism comprising a battery casing body, a fixing frame fixedly connected to the inner wall of the battery casing body, four first heat-conducting plates fixedly connected to the outer surface of the fixing frame, a plurality of identical limiting rings fixedly connected to the inner wall of the battery casing body, the inner ring of each group of limiting rings being jointly fixedly connected to the battery body, and a plurality of identical second heat-conducting plates fixedly connected to the outer surface of each first heat-conducting plate, the outer surface of each second heat-conducting plate being... All are fixedly connected to heat-conducting plates. The inner wall of the protective shell is fixedly connected to a condensate storage tank and a condensate collection tank. The outer surface of the condensate storage tank is fixedly connected to a first delivery valve. The output end of the first delivery valve is fixedly connected to a delivery pipe. The outer surface of the delivery pipe is fixedly connected to several identical second delivery valves. The output end of each second delivery valve is fixedly connected to a condensate delivery pipe. The end of each condensate delivery pipe away from the second delivery valve is fixedly connected to a first recovery valve. The output ends of two sets of first recovery valves are jointly fixedly connected to a recovery pipe. The outer surface of the recovery pipe is fixedly connected to a second recovery valve. The protective shell has a buffer protection component inside and a puncture-resistant component on the outside.

[0007] Preferably, the buffer protection assembly includes two first buffer plates, two second buffer plates, and several identical high-density polyurethane foams. Each group of high-density polyurethane foams has two buffer frames fixedly connected to one side of each other. Each group of buffer frames has several identical fixed sleeves fixedly connected to its inner wall. Each group of buffer frames has several identical movable rods slidably connected inside its interior. Each group of movable rods has two limiting blocks fixedly connected to its outer surface. The outer surface of each movable rod is in contact with the interior of the fixed sleeve. Each group of buffer frames has several identical buffer springs fixedly connected to its inner wall. The outer surface of each buffer spring is in contact with the outer surface of the fixed sleeve.

[0008] Preferably, each set of buffer frames has a protective pad fixedly connected to its outer surface, each protective pad is filled with ammonia, and the outer surface of each set of limiting blocks is in contact with the outer surface of high-density ammonia foam.

[0009] Preferably, the puncture-resistant component includes a stainless steel plate, the inner wall of which is fixedly connected with two first protective grilles and two second protective grilles, and the outer surface of the stainless steel plate is fixedly connected with reinforcing ribs, the outer surface of which is fixedly connected to the outer surface of the protective shell.

[0010] Preferably, the inner wall of the reinforcing rib is threaded with several identical fixing bolts, and the outer surface of each group of fixing bolts is threadedly connected to the inner wall of the protective shell.

[0011] Preferably, each group of second delivery valves has two fixed brackets fixedly connected to its outer surface, and the outer surface of each group of fixed brackets is fixedly connected to the outer surface of the first heat-conducting plate.

[0012] Preferably, a support plate is fixedly connected to the outer surface of the first delivery valve, and the outer surface of the support plate is fixedly connected to the outer surface of the condensate storage tank.

[0013] Preferably, each group of first recovery valves has two support frames fixedly connected to its outer surface, and the outer surface of each support frame is fixedly connected to the outer surface of the second heat-conducting plate.

[0014] Preferably, a fixing plate is fixedly connected to the outer surface of the second recovery valve, and the outer surface of the fixing plate is fixedly connected to the outer surface of the condensate collection tank. Temperature sensors are fixedly connected to the inner walls of both the condensate storage tank and the condensate collection tank.

[0015] Preferably, the outer surface of each of the heat-conducting sheets is in contact with the outer surface of the battery body, the outer surface of each of the condensate delivery pipes is fixedly connected to the inner wall of the first heat-conducting plate, the output end of the second recovery valve is fixedly connected to the outer surface of the condensate collection tank, the outer surface of the condensate collection tank is fixedly connected to a one-way valve, and the output end of the one-way valve is fixedly connected to the outer surface of the condensate storage tank.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention forms an all-around heat conduction network by connecting a first heat conduction plate, a second heat conduction plate, and a heat conduction sheet through a fixed frame. The heat conduction sheet is in direct contact with the surface of the battery body, which can quickly capture the heat generated during battery operation. The heat is evenly conducted through multi-stage heat conduction plates, avoiding local high temperature accumulation. A closed-loop heat dissipation circuit is formed by a condensate storage tank, a delivery pipe, a condensate delivery pipe, and a recovery pipe. The condensate circulates in the pipe and fully exchanges heat with the heat conduction plates, quickly removing a large amount of heat. With the help of a temperature sensor to monitor the condensate temperature in real time, the opening and closing state of the delivery valve can be flexibly adjusted to ensure that the heat dissipation efficiency is matched as needed, and the battery temperature is always controlled within a safe range.

[0017] 2. This invention integrates multiple buffering elements, including high-density urethane foam, a buffer frame, a buffer spring, a movable rod, and a fixed sleeve, by setting up a buffer protection component. When encountering bumpy roads, emergency braking, or minor collisions, the urethane foam in the pad first provides initial flexible buffering, then the high-density urethane foam absorbs part of the impact force, and finally the movable rod slides in the fixed sleeve in conjunction with the elastic deformation of the buffer spring to further dissipate the remaining impact force, forming a multi-level buffer barrier of "flexibility + elasticity", which greatly reduces the impact of external impacts on the battery body.

[0018] 3. This invention adopts a composite structure design of "stainless steel plate + double protective grid + reinforcing rib". The stainless steel plate serves as the first protective barrier, resisting the initial puncture of sharp objects with its high strength. The two first protective grids and two second protective grids inside form a cross protective net, further blocking the penetration of sharp objects. Even if the stainless steel plate is damaged, the grid structure can still play a protective role, avoiding direct damage to the battery casing. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the structure of the first buffer plate of the present invention; Figure 3 This is a schematic diagram of the fixed frame structure of the present invention; Figure 4 This is a schematic diagram of the structure of the first heat-conducting plate of the present invention; Figure 5 This is a schematic diagram of the structure of the battery body of the present invention; Figure 6 This is a schematic diagram of the structure of the condensate delivery pipe of the present invention; Figure 7 This is a schematic diagram of the structure of the recycling pipeline of the present invention; Figure 8 This is a schematic diagram of the structure of the high-density urethane foam of the present invention; Figure 9 This is a schematic diagram of the structure of the fixing sleeve of the present invention; Figure 10 This is a schematic diagram of the one-way valve of the present invention.

[0020] In the picture: 1. Protective outer casing; 2. Heat dissipation mechanism; 201. Battery casing body; 202. Condensate storage tank; 203. Condensate collection tank; 204. Temperature sensor; 205. Fixing frame; 206. First heat-conducting plate; 207. Heat-conducting sheet; 208. Second heat-conducting plate; 209. First delivery valve; 210. Fixing bracket; 211. Second delivery valve; 212. Delivery pipe; 213. Limiting ring; 214. Battery body; 215. Condensate delivery pipe; 216. First recovery valve; 217. Support frame; 218. Recovery pipe; 219. Second recovery valve; 220. Fixing plate; 221. Support plate; 222. Check valve; 3. Buffer and protection components; 301. First buffer plate; 302. Second buffer plate; 303. High-density polyurethane foam; 304. Buffer frame; 305. Pad; 306. Limiting block; 307. Polyurethane foam; 308. Movable rod; 309. Fixing sleeve; 310. Buffer spring; 4. Puncture-resistant components; 401. Stainless steel plate; 402. First protective grille; 403. Second protective grille; 404. Reinforcing ribs; 405. Fixing bolts. Detailed Implementation

[0021] 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.

[0022] Example 1: Please refer to Figures 3-7 and Figure 10This invention provides a technical solution: a battery module and battery casing for electric vehicles, including a protective casing 1. A heat dissipation mechanism 2 is disposed inside the protective casing 1. The heat dissipation mechanism 2 includes a battery casing body 201. A fixing frame 205 is fixedly connected to the inner wall of the battery casing body 201. Four first heat-conducting plates 206 are fixedly connected to the outer surface of the fixing frame 205. Several identical limiting rings 213 are fixedly connected to the inner wall of the battery casing body 201. The inner ring of each set of limiting rings 213 is jointly fixedly connected to a battery body 214. Several identical second heat-conducting plates 208 are fixedly connected to the outer surface of each first heat-conducting plate 206. A heat-conducting sheet 20 is fixedly connected to the outer surface of each second heat-conducting plate 208. 7. A condensate storage tank 202 and a condensate collection tank 203 are fixedly connected to the inner wall of the protective shell 1. A first delivery valve 209 is fixedly connected to the outer surface of the condensate storage tank 202. A delivery pipe 212 is fixedly connected to the output end of the first delivery valve 209. Several identical second delivery valves 211 are fixedly connected to the outer surface of the delivery pipe 212. A condensate delivery pipe 215 is fixedly connected to the output end of each second delivery valve 211. A first recovery valve 216 is fixedly connected to the end of each condensate delivery pipe 215 away from the second delivery valve 211. The output ends of the two sets of first recovery valves 216 are fixedly connected to a recovery pipe 218. A second recovery valve 219 is fixedly connected to the outer surface of the recovery pipe 218.

[0023] Two fixing brackets 210 are fixedly connected to the outer surface of each group of second delivery valves 211. The outer surface of each group of fixing brackets 210 is fixedly connected to the outer surface of the first heat-conducting plate 206. The fixing brackets 210 can fix the position of the second delivery valves 211 and prevent them from shifting during use. A support plate 221 is fixedly connected to the outer surface of the first delivery valve 209. The outer surface of the support plate 221 is fixedly connected to the outer surface of the condensate storage tank 202. The support plate 221 can support the first delivery valve 209 and prevent it from shaking violently during use. Two support frames 217 are fixedly connected to the outer surface of each first recovery valve 216. The outer surface of each support frame 217 is fixedly connected to the outer surface of the second heat-conducting plate 208. The support frame 217 can fix the first recovery valve 216 and play a fixed limiting role to prevent its position from shifting. A fixing plate 220 is fixedly connected to the outer surface of the second recovery valve 219. The outer surface of the fixing plate 220 is fixedly connected to the outer surface of the condensate collection tank 203. Temperature sensors 204 are fixedly connected to the inner walls of the condensate storage tank 202 and the inner walls of the condensate collection tank 203. The fixing plate 220 can fix the second recovery valve 219 to prevent it from swaying during use. The outer surface of each heat-conducting plate 207 is in contact with the outer surface of the battery body 214, and the outer surface of each condensate delivery pipe 215 is fixedly connected to the inner wall of the first heat-conducting plate 206. The output end of the second recovery valve 219 is fixedly connected to the outer surface of the condensate collection tank 203. A one-way valve 222 is fixedly connected to the outer surface of the condensate collection tank 203. The output end of the one-way valve 222 is fixedly connected to the outer surface of the condensate storage tank 202. The one-way valve 222 facilitates the delivery of condensate, thus achieving energy saving and environmental protection.

[0024] The specific implementation of this embodiment is as follows: Before the battery module is put into use, a sufficient amount of suitable condensate is injected into the condensate storage tank 202 to ensure that the condensate level meets the requirements for circulating heat dissipation. The initial state of the first delivery valve 209, the second delivery valve 211, the first recovery valve 216, and the second recovery valve 219 is checked to ensure that the valves are tightly closed without leakage. At the same time, it is confirmed that the temperature sensor 204 on the inner wall of the condensate storage tank 202 and the condensate collection tank 203 is working normally and can provide real-time feedback of liquid temperature data. When the battery body 214 generates heat during operation... The heat-conducting sheet 207, which is in direct contact with the surface of the battery body 214, quickly captures heat and conducts it to the second heat-conducting plate 208, which is fixedly connected to it. The second heat-conducting plate 208, through its fixed connection with the first heat-conducting plate 206, evenly distributes heat to the four first heat-conducting plates 206, forming an all-around heat conduction network to prevent heat accumulation in localized areas of the battery. The temperature sensor 204 monitors the condensate temperature in real time. When the condensate temperature in the condensate storage tank 202 is detected to be lower than a set threshold, the first delivery valve 209 automatically opens, releasing the condensate. The condensate is diverted through the delivery pipe 212 to each of the second delivery valves 211. The second delivery valves 211 flexibly adjust their opening degree according to the heat distribution of the first heat-conducting plate 206 in the corresponding area, allowing the condensate to flow evenly through the condensate delivery pipe 215 into the interior of the first heat-conducting plate 206. During the flow, the condensate fully exchanges heat with the first heat-conducting plate 206, absorbing heat and increasing in temperature. It then flows through the first recovery valve 216 into the recovery pipe 218. The condensate, having absorbed heat, flows through the second recovery valve 219 into the condensate collection tank 203. After the temperature sensor 204 inside 203 detects high-temperature condensate, it activates the cooling mechanism inside the tank to cool the condensate. When the condensate temperature drops to the set safe range, the one-way valve 222 automatically opens, and the cooled condensate is returned to the condensate storage tank 202 to complete the closed-loop heat dissipation cycle. If the temperature sensor 204 detects that the condensate temperature is too high, the opening degree of the first delivery valve 209 and the second delivery valve 211 can be increased to improve the condensate flow rate and enhance the heat dissipation efficiency. If the temperature is too low, the valve opening degree can be appropriately reduced to save energy.

[0025] Example 2: Please refer to Figure 2 , Figure 8and Figure 9 The present invention provides a technical solution: a battery module and a battery casing for electric vehicles. The present invention makes corresponding improvements to the technical problems mentioned in the background art. The protective casing 1 is provided with a buffer protective component 3 inside.

[0026] As a further definition of the buffer protection component 3 of the present invention, the buffer protection component 3 includes two first buffer plates 301, two second buffer plates 302, and several identical high-density urethane foams 303. Each group of high-density urethane foams 303 has two buffer frames 304 fixedly connected to one side of each other. Several identical fixed sleeves 309 are fixedly connected to the inner wall of each group of buffer frames 304. Several identical movable rods 308 are slidably connected inside each group of buffer frames 304. Two limiting blocks 306 are fixedly connected to the outer surface of each group of movable rods 308. The outer surface of each group of movable rods 308 is in contact with the inside of the fixed sleeves 309. Several identical buffer springs 310 are fixedly connected to the inner wall of each group of buffer frames 304. The outer surface of each buffer spring 310 is in contact with the outer surface of the fixed sleeve 309.

[0027] Each set of buffer frames 304 has a protective pad 305 fixedly connected to its outer surface. Each protective pad 305 is filled with ammonia 307. The outer surface of each set of limiting blocks 306 is in contact with the outer surface of high-density urethane foam 303. The buffer frames 304 can play a strong buffering role and prevent the battery from being damaged when it is hit.

[0028] The specific implementation of this embodiment is as follows: When assembling the buffer protection component 3 inside the protective shell 1, two first buffer plates 301 and two second buffer plates 302 are respectively installed on the outer periphery of the battery shell body 201, ensuring that a suitable buffer gap is reserved between the buffer plates and the battery shell body 201. High-density urethane foam 303 is filled between the first buffer plates 301, the second buffer plates 302 and the battery shell body 201, so that the high-density urethane foam 303 is tightly attached to the surface of the buffer plates and the battery shell body 201. At the same time, the buffer frame 304 is fixed on the two sets of high-density urethane foam 303 against each other. On one side, ensuring the buffer frame 304 is on the force transmission path, when the electric vehicle encounters a bumpy road, emergency braking, or minor collision, the external impact force first acts on the first buffer plate 301 or the second buffer plate 302. The buffer plate transmits the impact force to the surface pad 305. The ammonia 307 filled inside the pad 305 has good flexible deformation capability, absorbing part of the impact force through its own compression deformation, achieving primary flexible buffering and weakening the initial intensity of the impact force. The remaining impact force after the initial buffering by the ammonia 307 is transmitted through the pad 305 to the high-density urethane foam 303. High-density urethane foam 303 possesses excellent impact absorption performance. Under impact, it undergoes compression deformation, further absorbing and dispersing the impact force, preventing it from directly impacting the battery casing 201. The residual impact force transmitted by the high-density urethane foam 303 acts on the buffer frame 304, pushing the movable rod 308 inside the buffer frame 304 towards the fixed sleeve 309. The limiting block 306 on the surface of the movable rod 308 restricts its sliding stroke, preventing it from detaching from the buffer frame 304. Simultaneously, the movable rod 308 compresses the buffer spring 310 on the outside of the fixed sleeve 309, and the buffer spring 310 generates elastic deformation... The spring generates a reverse elastic force that cancels out the impact force, completely dissipating the residual impact force. After the external impact force disappears, the elastic restoring force of the buffer spring 310 pushes the movable rod 308 to reset, and the high-density urethane foam 303 and urethane rubber 307 also gradually return to their original state, so that the buffer protection component 3 returns to its initial protection state, preparing for possible subsequent impacts. The entire buffering process uses a multi-level protection mode of "flexible buffering of urethane rubber 307 → absorption of high-density urethane foam 303 → elastic cancellation of buffer spring 310" to minimize the impact of external impacts on the battery body 214 and prevent the battery from being damaged by vibration or collision.

[0029] Example 3: Please refer to Figure 1 The present invention provides a technical solution: a battery module and a battery casing for electric vehicles. The present invention makes corresponding improvements to the technical problems mentioned in the background art. The protective casing 1 is provided with a puncture-resistant component 4 on its outer side.

[0030] As a further definition of the puncture-resistant component 4 of the present invention, the puncture-resistant component 4 includes a stainless steel plate 401, the inner wall of the stainless steel plate 401 is fixedly connected with two first protective grilles 402 and two second protective grilles 403, the outer surface of the stainless steel plate 401 is fixedly connected with reinforcing ribs 404, and the outer surface of the reinforcing ribs 404 is fixedly connected with the outer surface of the protective shell 1.

[0031] The inner wall of the reinforcing rib 404 is threaded with several identical fixing bolts 405. The outer surface of each set of fixing bolts 405 is threaded to the inner wall of the protective shell 1. The fixing bolts 405 can reinforce the reinforcing rib 404 and the protective shell 1, thereby enhancing the stability of the device.

[0032] The specific implementation of this embodiment is as follows: When installing the anti-puncture component 4 on the outer side of the protective shell 1, firstly, two first protective grilles 402 and two second protective grilles 403 are fixed to the inner wall of the stainless steel plate 401 to form a protective mesh structure, ensuring that the gaps between the grilles are uniform and dense, which can effectively block the penetration of sharp objects. Then, the reinforcing ribs 404 are fixed to the outer surface of the stainless steel plate 401, and the reinforcing ribs 404 are threadedly connected to the outer surface of the protective shell 1 by fixing bolts 405, so that the stainless steel plate 401, the protective grilles and the protective shell 1 form a solid integral structure, avoiding loose assembly. When the battery shell is hit or punctured by a sharp object during the driving of the electric vehicle, the stainless steel plate 401, as the outermost protective barrier, resists the initial impact of the sharp object with its high-strength metal properties. The hardness and toughness of the stainless steel plate 401 can prevent the sharp object from easily scratching or penetrating. If the impact force of the sharp object is small, it can be directly blocked by the stainless steel plate 401 and cannot continue to penetrate inward. If the sharp object impacts... The force is relatively large. After penetrating the outer protection of the stainless steel plate 401, it will come into contact with the inner first protective grille 402 and second protective grille 403. The puncture path of the sharp object will be blocked or changed by the grille, and it will not be able to penetrate directly to the protective shell 1. The grille structure can disperse the impact force of the sharp object, converting the concentrated puncture force into dispersed pressure, reducing the degree of damage to the subsequent structure. The reinforcing rib 404 not only plays the role of fixing the stainless steel plate 401, but also enhances the structural strength and deformation resistance of the stainless steel plate 401, preventing the stainless steel plate 401 from being locally dented or broken when it encounters puncture impact, ensuring the overall protective performance of the puncture-proof component 4. Even if the stainless steel plate 401 is partially damaged under strong impact, the first protective grille 402 and the second protective grille 403 can still maintain the complete protective structure, continue to block the sharp object from penetrating inward, and avoid directly damaging the battery shell body 201, thereby preventing safety accidents such as internal battery short circuits and electrolyte leakage, and ensuring the safety of battery module use.

[0033] Specifically, the battery module and battery casing for this electric vehicle during operation / use: First, before putting the battery module into use, inject sufficient suitable condensate into the condensate storage tank 202 to ensure that the condensate level meets the requirements for circulating heat dissipation. Check the initial state of the first delivery valve 209, the second delivery valve 211, the first recovery valve 216, and the second recovery valve 219 to ensure that the valves are tightly closed without leakage. At the same time, confirm that the temperature sensor 204 on the inner wall of the condensate storage tank 202 and the condensate collection tank 203 is working properly and can provide real-time feedback of liquid temperature data. When the battery body 214 generates heat during operation, it should react with the battery body 214. The heat-conducting sheet 207, which is in direct contact with the surface of the first heat-conducting plate 206, quickly captures heat and conducts it to the second heat-conducting plate 208, which is fixedly connected to it. The second heat-conducting plate 208, through its fixed connection with the first heat-conducting plate 206, evenly distributes heat to the four first heat-conducting plates 206, forming an all-around heat conduction network to prevent heat accumulation in localized areas of the battery. The temperature sensor 204 monitors the condensate temperature in real time. When the condensate temperature in the condensate storage tank 202 is detected to be lower than a set threshold, the first delivery valve 209 automatically opens, allowing condensate to flow through the delivery pipe. The condensate is diverted from channel 212 to each of the second delivery valves 211. The second delivery valves 211 flexibly adjust their opening degree according to the heat distribution of the first heat-conducting plate 206 in the corresponding area, allowing the condensate to flow evenly through the condensate delivery pipe 215 into the interior of the first heat-conducting plate 206. During the flow, the condensate fully exchanges heat with the first heat-conducting plate 206, absorbing heat and increasing in temperature. It then flows through the first recovery valve 216 into the recovery pipe 218. The condensate, having absorbed heat, flows through the second recovery valve 219 into the condensate collection tank 203. The condensate collection tank 203... After the internal temperature sensor 204 detects high-temperature condensate, it activates the internal cooling mechanism to cool the condensate. When the condensate temperature drops to the set safe range, the one-way valve 222 automatically opens, and the cooled condensate is returned to the condensate storage tank 202 to complete the closed-loop heat dissipation cycle. If the temperature sensor 204 detects that the condensate temperature is too high, the opening degree of the first delivery valve 209 and the second delivery valve 211 can be increased to improve the condensate flow rate and enhance the heat dissipation efficiency. If the temperature is too low, the valve opening degree can be appropriately reduced to save energy. Then, when assembling the buffer protection assembly 3 inside the protective shell 1, the two first buffer plates 301 and the two second buffer plates 302 are respectively installed on the outer perimeter of the battery shell body 201, ensuring that a suitable buffer gap is reserved between the buffer plates and the battery shell body 201. High-density urethane foam 303 is filled between the first buffer plates 301, the second buffer plates 302 and the battery shell body 201, so that the high-density urethane foam 303 is tightly attached to the surface of the buffer plates and the battery shell body 201. At the same time, the buffer frame 304 is fixed on the side where the two sets of high-density urethane foam 303 are close to each other, ensuring... The buffer frame 304 is located on the force transmission path. When the electric vehicle encounters a bumpy road, emergency braking, or a minor collision, the external impact force first acts on the first buffer plate 301 or the second buffer plate 302. The buffer plate transmits the impact force to the surface pad 305. The ammonia 307 filled inside the pad 305 has good flexible deformation capability. It absorbs part of the impact force through its own compression deformation, achieving primary flexible buffering and weakening the initial intensity of the impact force. The remaining impact force after the initial buffering by the ammonia 307 is transmitted through the pad 305 to the high-density urethane foam 303. The high-density urethane foam 303 has... It possesses excellent impact absorption performance, undergoing compression deformation under impact force to further absorb and disperse the impact force, preventing the impact force from directly acting on the battery casing body 201. The residual impact force transmitted by the high-density urethane foam 303 acts on the buffer frame 304, pushing the movable rod 308 inside the buffer frame 304 to slide towards the fixed sleeve 309. The limiting block 306 on the surface of the movable rod 308 restricts the sliding stroke of the movable rod 308, preventing it from detaching from the buffer frame 304. At the same time, the movable rod 308 compresses the buffer spring 310 on the outside of the fixed sleeve 309, and the buffer spring 310 generates a reverse force through elastic deformation. The elastic force cancels out the impact force, completely dissipating the residual impact force. After the external impact force disappears, the elastic restoring force of the buffer spring 310 pushes the movable rod 308 to reset, and the high-density urethane foam 303 and urethane rubber 307 also gradually return to their original state, so that the buffer protection component 3 returns to its initial protection state, preparing for possible subsequent impacts. The entire buffering process uses a multi-level protection mode of "flexible buffering of urethane rubber 307 → absorption of high-density urethane foam 303 → elastic cancellation of buffer spring 310" to minimize the impact of external impacts on the battery body 214 and prevent the battery from being damaged by vibration or collision. Furthermore, when installing the puncture-resistant assembly 4 on the outer side of the protective shell 1, firstly, two first protective grilles 402 and two second protective grilles 403 are fixed to the inner wall of the stainless steel plate 401 to form a protective mesh structure, ensuring that the gaps between the grilles are uniform and dense, effectively blocking the penetration of sharp objects. Then, reinforcing ribs 404 are fixed to the outer surface of the stainless steel plate 401, and the reinforcing ribs 404 are threadedly connected to the outer surface of the protective shell 1 using fixing bolts 405, so that the stainless steel plate 401, the protective grilles, and the protective shell 1 form a solid overall structure, preventing loosening of the assembly. When the battery shell is struck or punctured by a sharp object during the operation of the electric vehicle, the stainless steel plate 401, as the outermost protective barrier, resists the initial impact of the sharp object with its high-strength metal properties. The hardness and toughness of the stainless steel plate 401 can prevent sharp objects from easily cutting or penetrating. If the impact force of the sharp object is small, it can be directly blocked by the stainless steel plate 401 and cannot continue to penetrate inward. If the impact force of the sharp object is large, it can penetrate further. After the outer protective layer of the stainless steel plate 401 is broken, it will come into contact with the inner first protective grille 402 and second protective grille 403. The puncture path of the sharp object will be blocked or changed by the grille, and it will not be able to penetrate directly into the protective shell 1. The grille structure can disperse the impact force of the sharp object, converting the concentrated puncture force into dispersed pressure, reducing the degree of damage to the subsequent structure. The reinforcing rib 404 not only plays the role of fixing the stainless steel plate 401, but also enhances the structural strength and deformation resistance of the stainless steel plate 401, preventing the stainless steel plate 401 from being locally dented or broken when it encounters puncture impact, ensuring the overall protective performance of the puncture-proof component 4. Even if the stainless steel plate 401 is partially damaged under strong impact, the first protective grille 402 and the second protective grille 403 can still maintain the complete protective structure, continue to block the sharp object from penetrating inward, and avoid directly damaging the battery shell body 201, thereby preventing safety accidents such as internal battery short circuits and electrolyte leakage, and ensuring the safety of battery module use.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0035] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A battery module and a battery housing for an electric vehicle, comprising a protective housing (1), characterized in that: The inside of the protective shell (1) is provided with a heat dissipation mechanism (2), the heat dissipation mechanism (2) comprises a battery shell body (201), the inner wall of the battery shell body (201) is fixedly connected with a fixed frame (205), the outer surface of the fixed frame (205) is fixedly connected with four first heat conducting plates (206), the inner wall of the battery shell body (201) is fixedly connected with a plurality of same limiting rings (213), the inner circle of each group of limiting rings (213) is fixedly connected with a battery body (214) in common, the outer surface of each first heat conducting plate (206) is fixedly connected with a plurality of same second heat conducting plates (208), the outer surface of each second heat conducting plate (208) is fixedly connected with a heat conducting fin (207), the inner wall of the protective shell (1) is fixedly connected with a condensate storage tank (202) and a condensate collecting tank (203), the outer surface of the condensate storage tank (202) is fixedly connected with a first conveying valve (209), the output end of the first conveying valve (209) is fixedly connected with a conveying pipeline (212), the outer surface of the conveying pipeline (212) is fixedly connected with a plurality of same second conveying valves (211), the output end of each second conveying valve (211) is fixedly connected with a condensate conveying pipe (215), the end, away from the second conveying valve (211), of each condensate conveying pipe (215) is fixedly connected with a first recovery valve (216), the output ends of two groups of first recovery valves (216) are fixedly connected with a recovery pipeline (218) in common, the outer surface of the recovery pipeline (218) is fixedly connected with a second recovery valve (219); The inside of the protective shell (1) is provided with a buffer protection assembly (3), and the outer side of the protective shell (1) is provided with a puncture prevention assembly (4).

2. The battery module and battery case for an electric vehicle according to claim 1, characterized by: The buffer protection assembly (3) comprises two first buffer plates (301), two second buffer plates (302) and a plurality of same high-density urethane foams (303), each group of high-density urethane foams (303) is fixedly connected with two buffer frames (304) on the side face close to each other in common, the inner wall of each group of buffer frames (304) is fixedly connected with a plurality of same fixing sleeves (309), the inside of each group of buffer frames (304) is slidingly connected with a plurality of same movable rods (308), the outer surface of each group of movable rods (308) is fixedly connected with two limiting blocks (306), the outer surface of each group of movable rods (308) is in contact with the inside of the fixing sleeve (309), the inner wall of each group of buffer frames (304) is fixedly connected with a plurality of same buffer springs (310), and the outer surface of each buffer spring (310) is in contact with the outer surface of the fixing sleeve (309).

3. The battery module and battery pack for an electric vehicle according to claim 2, wherein: The outer surface of each group of the buffer frame (304) is fixedly connected with a protective pad (305), the inside of each protective pad (305) is filled with ammonia glue (307), and the outer surface of each group of the limiting block (306) is in contact with the outer surface of the high-density urethane foam (303).

4. The battery module and battery pack for an electric vehicle according to claim 1, wherein: The puncture-proof assembly (4) comprises a stainless steel plate (401), the inner wall of the stainless steel plate (401) is fixedly connected with two first protective grilles (402) and two second protective grilles (403), the outer surface of the stainless steel plate (401) is fixedly connected with a reinforcing rib (404), and the outer surface of the reinforcing rib (404) is fixedly connected with the outer surface of the protective shell (1).

5. The battery module and battery pack for an electric vehicle according to claim 4, wherein: The inner wall of the reinforcing rib (404) is threadedly connected with a plurality of same fixing bolts (405), and the outer surface of each group of the fixing bolts (405) is threadedly connected with the inner wall of the protective shell (1).

6. The battery module and battery pack for an electric vehicle according to claim 1, wherein: The outer surface of each group of the second conveying valve (211) is fixedly connected with two fixing frames (210), and the outer surface of each group of the fixing frame (210) is fixedly connected with the outer surface of the first heat-conducting plate (206).

7. The battery module and battery pack for electric vehicles according to claim 1, wherein: The outer surface of the first conveying valve (209) is fixedly connected with a supporting plate (221), and the outer surface of the supporting plate (221) is fixedly connected with the outer surface of the condensed liquid storage tank (202).

8. The battery module and battery pack for electric vehicles according to claim 1, wherein: The outer surface of each group of the first recovery valve (216) is fixedly connected with two supporting frames (217), and the outer surface of each group of the supporting frame (217) is fixedly connected with the outer surface of the second heat-conducting plate (208).

9. The battery module and battery pack for electric vehicles according to claim 1, wherein: The outer surface of the second recovery valve (219) is fixedly connected with a fixing plate (220), the outer surface of the fixing plate (220) is fixedly connected with the outer surface of the condensed liquid collecting tank (203), and the inner wall of the condensed liquid storage tank (202) and the inner wall of the condensed liquid collecting tank (203) are fixedly connected with a temperature sensor (204).

10. The battery module and battery pack for electric vehicles according to claim 1, wherein: The outer surface of each heat-conducting plate (207) is in contact with the outer surface of the battery main body (214), the outer surface of each condensed liquid conveying pipe (215) is fixedly connected with the inner wall of the first heat-conducting plate (206), the output end of the second recovery valve (219) is fixedly communicated with the outer surface of the condensed liquid collecting tank (203), the outer surface of the condensed liquid collecting tank (203) is fixedly communicated with a one-way valve (222), and the output end of the one-way valve (222) is fixedly communicated with the outer surface of the condensed liquid storage tank (202).

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