Lithium battery module with liquid supplementing function

Abstract

The application relates to a lithium battery module with a liquid supplementing function, which comprises a lithium battery module outer assembly, the lithium battery module outer assembly comprising an outer box body, a storage cavity and a mounting groove, the inside of the outer box body being provided with the storage cavity, the top end of the storage cavity being provided with the mounting groove, a closing cover being mounted on the mounting groove, the edge of the closing cover being fixedly connected with the top end of the outer box body through bolts, and the inside of the storage cavity being used for storing lithium battery modules. Through the cooperation of the storage cavity, the liquid inlet, the interlayer cavity and the square tube, the cooling liquid can enter the interlayer cavity through the liquid supply pipe, is uniformly introduced into the inside of the storage cavity through the liquid inlet, omni-directionally covers the lithium battery modules, and simultaneously realizes the full-domain circulating flow of the cooling liquid relying on the multi-directional liquid discharge holes of the square tube.

Description

Technical Field

[0001] This invention belongs to the field of lithium battery modules with liquid replenishment function, specifically a lithium battery module with liquid replenishment function. Background Technology

[0002] Currently, most lithium battery modules on the market with liquid cooling features adopt a closed-loop liquid cooling circulation structure. This structure removes the large amount of heat generated during lithium battery operation through coolant circulation, effectively solving the problem of rapid temperature rise during high-rate discharge and prolonged operation. This avoids safety hazards such as battery bulging due to high temperature and thermal runaway. Compared to traditional air cooling, this method offers higher heat dissipation efficiency and more stable temperature control. Furthermore, conventional liquid-cooled lithium battery modules possess a basic sealed protective structure, preventing coolant leakage and the intrusion of dust and moisture into the battery cavity. They can operate stably under complex conditions such as in vehicles and energy storage, exhibiting good environmental adaptability and operational stability, thus meeting the general heat dissipation and protection requirements of lithium battery modules.

[0003] However, some shortcomings remain: Existing liquid-cooled lithium battery modules mostly use a fixed closed-loop coolant circulation system. During long-term operation, coolant loss occurs due to high-temperature evaporation and minor seepage, leading to a drop in coolant level, insufficient filling of the heat dissipation cavity, and consequently, localized heat dissipation blind spots. This results in larger temperature differences within the lithium battery module, severely impacting battery consistency and lifespan over the long term. Furthermore, traditional equipment lacks an automated coolant replenishment mechanism, requiring manual disassembly and replenishment after coolant depletion. This results in high maintenance costs, low efficiency, and the disassembly process can easily damage the original sealing structure, causing leaks, short circuits, and other safety issues. Therefore, a lithium battery module with a coolant replenishment function is proposed. Summary of the Invention

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0005] Given the following technical problems in existing technologies: Most existing liquid-cooled lithium battery modules use a fixed closed-loop coolant circulation system. During long-term operation, coolant loss occurs due to high-temperature evaporation and trace permeation, leading to a drop in coolant level, insufficient filling of the heat dissipation cavity, and consequently, localized heat dissipation blind spots. This results in larger temperature differences within the lithium battery module, severely impacting battery consistency and lifespan over long-term use. Furthermore, traditional equipment lacks automated coolant replenishment mechanisms, requiring manual disassembly for inspection and replenishment after coolant depletion. This results in high maintenance costs, low efficiency, and the disassembly process can easily damage the original sealing structure, causing leaks, short circuits, and other safety issues.

[0006] To solve the above technical problems, the present invention provides the following technical solution: a lithium battery module with liquid replenishment function, including an outer component of the lithium battery module, the outer component of the lithium battery module including an outer casing, a storage cavity and an installation groove, the storage cavity is opened inside the outer casing, the installation groove is opened at the top of the outer casing, a sealing cover is installed on the installation groove, the edge of the sealing cover is fixedly connected to the top of the outer casing by bolts, and the inner side of the storage cavity is used to store the lithium battery module. The outer casing is equipped with a liquid circulation system, which includes an inlet, a square tube, a suction tube, a supply tube, a main pipe, and a sandwich cavity. The edge of the outer casing also has a sandwich cavity. Several inlets are evenly distributed on the two opposite faces of the top of the storage cavity. The sandwich cavity and the storage cavity are connected through the inlets. Several square tubes are installed on the inner bottom wall of the storage cavity. The main pipe is installed at the bottom of the sandwich cavity. Drain holes are evenly distributed on the upper and side of the square tubes. The drain holes are connected to the inner channel of the square tubes. All square tubes are connected to the main pipe. The suction tube and the supply tube are installed on the outside of the outer casing. The suction tube is located at the bottom of the outer casing, and the supply tube is located at the top of the outer casing. The supply tube is connected to the top of the sandwich cavity, and the suction tube is connected to one end of the main pipe.

[0007] As a lithium battery module with a liquid replenishment function, both the liquid extraction pipe and the liquid supply pipe located on the outside of the outer casing are equipped with switching valves.

[0008] As a lithium battery module with a liquid replenishment function, the liquid supply pipe is connected to the liquid outlet of the circulating refrigeration equipment, and the liquid extraction pipe is connected to the liquid inlet of the circulating refrigeration equipment. The circulating refrigeration equipment includes a liquid-cooled refrigerator with the model number FL-100KW.

[0009] As a lithium battery module with a liquid replenishment function, the storage chamber, liquid inlet, jacketed chamber and square tube form an evaporator-like structure to contain the coolant used for circulating heat absorption, so that the lithium battery module in the storage chamber can be cooled.

[0010] As a lithium battery module with a liquid replenishment function, a sealing ring is provided on the inner side of the mounting slot, and the sealing cover squeezes the sealing ring to achieve a seal.

[0011] As a lithium battery module with liquid replenishment function, a liquid replenishment component is provided on the outer casing, and a gate control component is movably connected in the interlayer cavity. The liquid replenishment component includes a liquid replenishment tank, a liquid collection tank, and a liquid replenishment channel. A liquid replenishment tank is opened on each side of the outer casing. A trapezoidal liquid collection tank is opened in the middle of the inner bottom wall of the liquid replenishment tank. A liquid replenishment channel is opened on the inner side of the liquid collection tank. The liquid replenishment channel is connected to the interlayer cavity. A gravity pressure plate is slidably connected to the top of the liquid replenishment tank. The gravity pressure plate and the liquid replenishment tank are sealed by a sealing ring.

[0012] As a lithium battery module with a liquid replenishment function, a liquid replenishment pipe is provided on each side of the outer casing. The liquid replenishment pipe is connected to the liquid collection tank. One end of the liquid replenishment pipe is connected to a one-way valve, which allows the coolant to enter the liquid collection tank in one direction only through the liquid replenishment pipe.

[0013] As a lithium battery module with a liquid replenishment function, the gate control component includes a gate screen plate, attitude limiting strips, a stop magnet block, a magnetic attraction magnet block, a self-sealing sealing ring, a locking magnet one, a locking magnet two, a linkage frame, a hook push bar, a float assembly, and a gate seal. The top and bottom of the gate screen plate are provided with two attitude limiting strips. The end of the attitude limiting strip away from the gate screen plate is slidably connected to the inner wall of the interlayer cavity. The top of the gate screen plate is provided with a screen hole, and the bottom of the gate screen plate is provided with a gate seal. The gate seal can seal the liquid replenishment channel. The bottom of the linkage frame is provided with a hook push bar. The linkage frame and the hook push bar form a T-shape. The hook push bar is used to hook or abut the attitude limiting strip to make the linkage frame move up and down. The inner side of the interlayer cavity is provided with a limit strip. The limit strip is located on both sides of the gate screen plate and restricts the attitude and position of the gate screen plate to keep the gate screen plate in a vertical position. The top of the gate screen plate is fixedly connected to the float assembly. Several locking magnets are provided above and below the gate seal on the gate screen plate. The locking magnets are arranged linearly. Several locking magnets are provided above and below the liquid replenishment channel on the inner wall of the interlayer cavity. The locking magnets are arranged linearly. The locking magnets are magnetically attracted to the locking magnets. The locking magnets above the liquid replenishment channel and the locking magnets below the gate seal repel each other.

[0014] As a lithium battery module with liquid replenishment function, the float assembly includes an annular control frame, a limiting roller, and floats. The annular control frame is slidably connected in the interlayer cavity. Several water-permeable holes are evenly opened on the annular control frame. The limiting roller is rotatably connected to the inner side of the annular control frame. The limiting roller is rolledly connected to the interlayer cavity. Multiple floats are set on the annular control frame. Multiple sealed cavities are set inside the annular control frame to increase the buoyancy of the annular control frame. The material of the annular control frame is ceramic.

[0015] The beneficial effects of a lithium battery module with a liquid replenishment function according to the present invention are as follows: Through the cooperation of the storage cavity, liquid inlet, interlayer cavity and square tube, the coolant can enter the interlayer cavity through the liquid supply pipe and be evenly introduced into the storage cavity through the liquid inlet, covering the lithium battery module in all directions. At the same time, relying on the multi-directional drainage holes of the square tube, the coolant can achieve full-area circulation, which can quickly and evenly remove the working heat of the lithium battery module, eliminate heat dissipation blind spots, greatly improve the liquid cooling efficiency, stabilize the battery operating temperature, avoid the risk of high temperature thermal runaway, and at the same time, the full coverage of coolant can form an insulating protective layer, effectively avoid short circuit of lithium battery module, and improve the safety of equipment operation.

[0016] By using the replenishment component in conjunction with the gate control component, the coolant can be replenished automatically and adaptively without the need for manual disassembly. When the coolant level in the storage chamber and the interlayer chamber is sufficient, the self-sealing sealing ring of the gate control component seals and blocks the replenishment channel, thus preventing excessive coolant injection and leakage. When coolant is lost and the level drops, the float assembly sinks with the level, the linkage gate screen plate disengages from the sealed state, unlocks the replenishment channel, and the gravity pressure plate squeezes the coolant stored inside the replenishment channel. The coolant is then automatically injected into the interlayer cavity through the collection tank and the replenishment channel, completing precise replenishment. This effectively solves the problems of coolant loss, heat dissipation failure, and cumbersome manual maintenance in traditional equipment.

[0017] By using the magnetic attraction between locking magnet one and locking magnet two, and the limiting action between the stop magnet block and the magnetic attraction magnet block, the gate screen plate's posture stability and adaptive sealing adjustment are achieved. The magnetic limiting structure ensures that the gate screen plate always remains vertical, preventing offset and jamming. At the same time, utilizing the principle of magnetic repulsion, when the liquid level is stable, the sealing performance between the self-sealing sealing ring and the liquid replenishment channel is enhanced, preventing coolant leakage. When the liquid level drops, the sealing structure is precisely unlocked, ensuring sensitive and smooth liquid replenishment, significantly improving the equipment's operational stability and reliability.

[0018] By combining a self-sealing sealing ring with a rigid compression ring, and utilizing the U-shaped annular groove structure of the self-sealing sealing ring, adaptive pressure boosting sealing can be achieved using the coolant's own pressure. The higher the coolant pressure, the tighter the seal ring fits against the inner wall of the jacket cavity, effectively improving the sealing performance of the replenishment channel and completely solving the defects of traditional replenishment structures such as poor sealing, leakage, and backflow. Simultaneously, the addition of a one-way valve structure on the replenishment pipe allows for unidirectional input of external replenishment media, preventing coolant backflow and further enhancing system operational stability. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein: Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ; Figure 3 This is a top-view cross-sectional structural diagram of the present invention; Figure 4 This is a three-dimensional structural diagram of the gate screen plate of the present invention; Figure 5This is a schematic diagram of the cross-sectional structure of the gate screen plate of the present invention; Figure 6 This is a schematic diagram showing the positional relationship between the hook pusher bar and the gate screen plate of the present invention; Figure 7 This is a schematic diagram of the cross-sectional structure of the side of the present invention; Figure 8 This is a three-dimensional structural diagram of the ring-shaped control frame of the present invention; Figure 9 This is a schematic diagram of the front structure of the self-sealing sealing ring of the present invention; Figure 10 For the present invention Figure 2 A partially enlarged structural diagram of section A; Figure 11 This is a schematic cross-sectional view of the front of the present invention.

[0020] Reference numerals: 100, external component of lithium battery module; 101, outer casing; 102, storage cavity; 103, mounting slot; 104, sealing cover; 200, liquid circulation component; 201, liquid inlet; 202, square tube; 203, liquid extraction tube; 204, liquid supply tube; 205, main pipe; 206, interlayer cavity; 300, liquid replenishment component; 301, liquid replenishment tank; 302, liquid collection tank; 303, limiting strip; 305, gravity pressure plate; 306 307. Liquid replenishment channel; 408. Liquid replenishment pipe; 409. Gate control component; 400. Gate screen plate; 401. Attitude limiting strip; 402. Stop magnet block; 403. Magnetic attraction magnet block; 404. Self-sealing sealing ring; 405. Locking magnet one; 406. Locking magnet two; 407. Sealing box; 410. Linkage frame; 411. Hook push bar; 412. Rigid extrusion ring; 413. Annular control frame; 414. Limiting roller; 415. Float. Detailed Implementation

[0021] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0022] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0023] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0024] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth.

[0025] Example 1: As Figures 1-7 As shown, the present invention proposes a lithium battery module with a liquid replenishment function, including a lithium battery module outer component 100. The lithium battery module outer component 100 includes an outer casing 101, a storage cavity 102 and a mounting groove 103. The storage cavity 102 is provided inside the outer casing 101, and the mounting groove 103 is provided at the top of the outer casing 101. A sealing cover 104 is installed on the mounting groove 103. The edge of the sealing cover 104 is fixedly connected to the top of the outer casing 101 by bolts. The inner side of the storage cavity 102 is used to store the lithium battery module. The outer casing 101 is equipped with a liquid circulation component 200, which includes an inlet 201, a square tube 202, a suction tube 203, a supply tube 204, a main pipe 205, and a double-layer cavity 206. A double-layer cavity 206 is also formed on the edge of the outer casing 101. Several inlets 201 are evenly distributed on two opposite surfaces at the top of the storage cavity 102. The double-layer cavity 206 is connected to the storage cavity 102 through the inlets 201. Several square tubes 202 are arranged on the inner bottom wall of the storage cavity 102. A main pipe 205 is installed at the bottom of the 206. Drainage holes are evenly distributed on the upper and side surfaces of the square pipe 202, connecting to the inner channel of the square pipe 202. All square pipes 202 are connected to the main pipe 205. A suction pipe 203 and a supply pipe 204 are installed on the outer side of the outer casing 101. The suction pipe 203 is located at the bottom of the outer casing 101, and the supply pipe 204 is located at the top of the outer casing 101, connecting to the top of the interlayer cavity 206. The suction pipe 203 is connected to one end of the main pipe 205. Switch valves are installed on the portions of the suction pipe 203 and the supply pipe 204 located on the outer side of the outer casing 101.

[0026] The liquid supply pipe 204 is connected to the liquid outlet of the circulating refrigeration equipment, and the liquid extraction pipe 203 is connected to the liquid inlet of the circulating refrigeration equipment.

[0027] The storage chamber 102, liquid inlet 201, jacketed chamber 206, and square tube 202 constitute an evaporator-like structure to contain coolant for circulating heat absorption, thereby cooling the lithium battery module within the storage chamber 102. The coolant is made of insulating material, including fluorinated liquid.

[0028] A sealing ring is provided on the inner side of the mounting groove 103, and the sealing cover 104 squeezes the sealing ring to achieve a seal.

[0029] A liquid replenishment assembly 300 is installed on the outer casing 101, and a gate control component 400 is movably connected within the interlayer cavity 206. The liquid replenishment assembly 300 includes a liquid replenishment tank 301, a liquid collection tank 302, and a liquid replenishment channel 306. A liquid replenishment tank 301 is opened on each side of the outer casing 101. A trapezoidal liquid collection tank 302 is opened in the middle of the inner bottom wall of the liquid replenishment tank 301. A liquid replenishment channel 306 is opened on the inner side of the liquid collection tank 302 and is connected to the interlayer cavity 206. A gravity pressure plate 305 is slidably connected to the top of the liquid replenishment tank 301, and the gravity pressure plate 305 and the liquid replenishment tank 301 are sealed by a sealing ring. Several air pressure balance holes are provided between the top of the interlayer cavity 206 and the top of the liquid replenishment tank 301.

[0030] A liquid replenishment pipe 307 is provided on each side of the outer casing 101. The liquid replenishment pipe 307 is connected to the liquid collection tank 302. One end of the liquid replenishment pipe 307 is connected to a one-way valve. The one-way valve ensures that the coolant can only enter the liquid collection tank 302 through the liquid replenishment pipe 307 in one direction, thereby preventing the liquid in the liquid collection tank 302 from being lost through the liquid replenishment pipe 307.

[0031] The gate control component 400 includes a gate screen plate 401, attitude limiting strips 402, a stop magnet block 403, a magnetic attraction magnet block 404, a self-sealing sealing ring 405, a locking magnet one 406, a locking magnet two 407, a linkage frame 410, a hook push bar 411, a float assembly, and a gate seal. Two attitude limiting strips 402 are provided at both the top and bottom of the gate screen plate 401. The end of the attitude limiting strip 402 away from the gate screen plate 401 is slidably connected to the inner wall of the interlayer cavity 206. The top of the gate screen plate 401 is provided with screen holes, and the bottom of the gate screen plate 401 is provided with... The gate has a sealing element that can seal the liquid replenishment channel 306. The bottom end of the linkage frame 410 is provided with a hook push bar 411. The linkage frame 410 and the hook push bar 411 form a T-shape. The hook push bar 411 is used to hook or abut the attitude restriction bar 402 to make the linkage frame 410 move up and down. The inner side of the interlayer cavity 206 is provided with a limit bar 303. The limit bar 303 is located on both sides of the gate screen plate 401 and restricts the attitude and position of the gate screen plate 401 to keep the gate screen plate 401 in a vertical position. The top end of the gate screen plate 401 is fixedly connected to the float assembly. Several locking magnets 406 are provided above and below the gate seal on the gate screen plate 401. The locking magnets 406 are arranged linearly. Several locking magnets 407 are provided above and below the liquid replenishment channel 306 on the inner wall of the interlayer cavity 206. The locking magnets 407 are arranged linearly. The locking magnets 407 and the locking magnets 406 are magnetically attracted to each other. The locking magnets 407 above the liquid replenishment channel 306 and the locking magnets 406 below the gate seal repel each other.

[0032] When the liquid level continues to drop due to leakage or other reasons, the float assembly, along with the linkage frame 410 and the hook push bar 411, will squeeze the posture restriction bar 402 and the gate screen plate 401 downwards. This will cause the self-sealing sealing ring 405 and the liquid replenishment channel 306 to move due to the gravity squeeze of the float assembly, thus releasing the closure of the liquid replenishment channel 306. The liquid replenishment channel 306 will then form a communication between the liquid replenishment tank 301 and the interlayer cavity 206, allowing liquid to be replenished through the liquid replenishment channel 306.

[0033] Example 2: As Figures 7-11 As shown, based on Embodiment 1, the float assembly includes an annular control frame 413, a limiting roller 414, and floats 415. The annular control frame 413 is slidably connected within the interlayer cavity 206. Several water-permeable holes are evenly distributed on the annular control frame 413. The limiting roller 414 is rotatably connected to the inner side of the annular control frame 413. The limiting roller 414 is rolledly connected to the interlayer cavity 206. Multiple floats 415 are provided on the annular control frame 413. Multiple sealed cavities are provided inside the annular control frame 413 to increase the buoyancy of the annular control frame 413. The material of the annular control frame 413 is ceramic, and the density of the ceramic is less than 1.2 times the density of the coolant.

[0034] The gate seal includes a rigid compression ring 412 and a self-closing sealing ring 405.

[0035] The coolant fills the storage cavity 102 and covers the lithium battery module, which not only dissipates heat and cools the lithium battery module, but also forms an insulating protective layer to prevent short circuit faults. The fluorinated fluid includes perfluoropolyether oil, which can lubricate the moving parts.

[0036] A magnetic magnet block 404 is provided at the top of the interlayer cavity 206, and a stop magnet block 403 is provided at the top of the gate screen plate 401. The stop magnet block 403 is magnetically connected to the magnetic magnet block 404. When the attitude restriction bar 402 on the gate screen plate 401 is pulled up to the highest point by the float assembly through the linkage frame 410 and the hook push bar 411, the gate screen plate 401 is restricted by the magnetic magnet block 404. The coolant decreases, causing the float assembly to descend. The linkage frame 410 and the hook push bar 411 on the float assembly descend and disengage from the attitude restriction bar 402 at the top of the gate screen plate 401. However, due to the magnetic attraction of the magnetic magnet block 404 to the stop magnet block 403, the self-sealing sealing ring 405 on the gate screen plate 401 maintains the seal on the liquid replenishment channel 306. When the liquid level continues to drop due to leakage or other reasons, the float assembly, along with the linkage frame 410 and the hook push bar 411, will squeeze the posture restriction bar 402 and the gate screen plate 401 downwards, thereby causing the self-closing sealing ring 405 and the liquid replenishment channel 306 to move due to the gravity squeeze of the float assembly, thus releasing the closure of the liquid replenishment channel 306. The gravity pressure plate 305 squeezes the liquid in the replenishment tank 301 and enters the interlayer cavity 206 through the liquid collection tank 302 and the replenishment channel 306 to replenish it; the magnetic attraction between the locking magnet 1 406 and the locking magnet 2 407 can squeeze and seal the replenishment channel 306 by the self-sealing sealing ring 405.

[0037] During the liquid level recovery process, buoyancy causes the float assembly to move upward along with the linkage frame 410 and the hook push bar 411 until the hook push bar 411 hooks onto the attitude restriction bar 402 at the top of the gate screen plate 401, causing the gate screen plate 401 to approach and close the replenishment channel 306 with the self-sealing sealing ring 405. During the upward movement, the locking magnet 1 406 above the self-sealing sealing ring 405 does not match the locking magnet 2 407 below it until the locking magnet 1 406 below the self-sealing sealing ring 405 magnetically locks with the locking magnet 2 407 below it.

[0038] Example 3: Based on Example 1: A square groove is provided at the bottom of the gate screen plate 401. One side of the square groove is sealed and covered by a closed box 409. A rigid compression ring 412 is provided on the inner side of the closed box 409. The rigid compression ring 412 is fixedly connected to the inner ring of the self-sealing sealing ring 405. The outer ring of the self-sealing sealing ring 405 is fixedly connected to the wall of the outer ring of the self-sealing box 409. Several connecting holes are provided on the outer ring of the self-sealing box 409. The self-sealing sealing ring 405 is pressed against the inner wall of the interlayer cavity 206. The cross-section of the self-sealing sealing ring 405 is U-shaped and forms an annular groove. The coolant in the interlayer cavity 206 enters the connecting holes on the self-sealing sealing ring 405 and compresses the annular groove, causing the self-sealing sealing ring 405 to expand. This makes the self-sealing sealing ring 405 fit more tightly against the inner wall of the interlayer cavity 206, thus optimizing the sealing effect.

[0039] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0040] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention 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 the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A lithium battery module with a liquid replenishment function, characterized in that: The lithium battery module external component includes an outer casing, a storage cavity, and a mounting slot. The storage cavity is located inside the outer casing, and the mounting slot is located at the top of the outer casing. A sealing cover is installed on the mounting slot, and the inner side of the storage cavity is used to store the lithium battery module. The outer casing is equipped with a liquid circulation system, which includes an inlet, a square tube, a suction tube, a supply tube, a main pipe, and a sandwich cavity. The edge of the outer casing also has a sandwich cavity. Several inlets are evenly distributed on the two opposite faces of the top of the storage cavity. The sandwich cavity and the storage cavity are connected through the inlets. Several square tubes are installed on the inner bottom wall of the storage cavity. The main pipe is installed at the bottom of the sandwich cavity. Drain holes are evenly distributed on the upper and side of the square tubes. The drain holes are connected to the inner channel of the square tubes. All square tubes are connected to the main pipe. The suction tube and the supply tube are installed on the outside of the outer casing. The suction tube is located at the bottom of the outer casing, and the supply tube is located at the top of the outer casing. The supply tube is connected to the top of the sandwich cavity, and the suction tube is connected to one end of the main pipe.

2. A lithium battery module with liquid replenishment function according to claim 1, characterized in that: Both the liquid extraction pipe and the liquid supply pipe located on the outside of the outer casing are equipped with switch valves.

3. A lithium battery module with liquid replenishment function according to claim 2, characterized in that: The liquid supply pipe is connected to the liquid outlet of the circulating refrigeration equipment, and the liquid extraction pipe is connected to the liquid inlet of the circulating refrigeration equipment.

4. A lithium battery module with a liquid replenishment function according to claim 3, characterized in that: The storage chamber, liquid inlet, jacketed chamber, and square tube are used to contain the coolant used for circulating heat absorption, so that the lithium battery module in the storage chamber can be cooled.

5. A lithium battery module with a liquid replenishment function according to claim 2, characterized in that: A sealing ring is provided on the inner side of the mounting groove, and the sealing cover squeezes the sealing ring to achieve a seal.

6. A lithium battery module with liquid replenishment function according to claim 1, characterized in that: The outer casing is equipped with a liquid replenishment assembly, and a gate control component is movably connected inside the interlayer cavity. The liquid replenishment assembly includes a liquid replenishment tank, a liquid collection tank, and a liquid replenishment channel. A liquid replenishment tank is opened on each side of the outer casing. A trapezoidal liquid collection tank is opened in the middle of the inner bottom wall of the liquid replenishment tank. A liquid replenishment channel is opened on the inner side of the liquid collection tank. The liquid replenishment channel is connected to the interlayer cavity. A gravity pressure plate is slidably connected to the top of the liquid replenishment tank.

7. A lithium battery module with a liquid replenishment function according to claim 6, characterized in that: A liquid replenishment pipe is installed on each side of the outer casing. The liquid replenishment pipe is connected to the liquid collection tank. One end of the liquid replenishment pipe is connected to a one-way valve, which ensures that the coolant can only enter the liquid collection tank through the liquid replenishment pipe in one direction.

8. A lithium battery module with a liquid replenishment function according to claim 7, characterized in that: The gate control components include a gate screen plate, attitude limiting strips, stop magnet blocks, magnetic attraction magnet blocks, self-sealing sealing rings, linkage frame, hook push bars, float assembly, and gate seals. Two attitude limiting strips are provided at both the top and bottom of the gate screen plate. The end of the attitude limiting strip furthest from the gate screen plate is slidably connected to the inner wall of the interlayer cavity. The top of the gate screen plate has screen holes, and the bottom of the gate screen plate has a gate seal that can seal the replenishment channel. A hook push bar is provided at the bottom of the linkage frame, forming a T-shape. The hook push bar is used to engage or abut the attitude limiting strips to move the linkage frame up and down. Limiting strips are provided on the inner side of the interlayer cavity, located on both sides of the gate screen plate, restricting the attitude and position of the gate screen plate to maintain its vertical orientation. The top of the gate screen plate is fixedly connected to the float assembly.

9. A lithium battery module with a liquid replenishment function according to claim 8, characterized in that: The float assembly includes an annular control frame, a limiting roller, and floats. The annular control frame is slidably connected inside the interlayer cavity. Several water-permeable holes are evenly opened on the annular control frame. The limiting roller is rotatably connected to the inner side of the annular control frame. The limiting roller is tumbledly connected to the interlayer cavity. Multiple floats are set on the annular control frame.

10. A lithium battery module with a liquid replenishment function according to claim 8, characterized in that: The gate seal includes a rigid compression ring and a self-sealing sealing ring. A square groove is provided at the bottom of the gate screen plate. One side of the square groove is sealed and covered with a sealing box, and the other side of the square groove is provided with a rigid compression ring.

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