A lithium battery module with detection function

Abstract

This invention relates to the field of lithium battery testing technology, and more particularly to a lithium battery module with a testing function, including a cell testing module and an adaptive temperature regulation module. The adaptive temperature regulation module is sealed to the battery module housing above the cell testing module. Both sides of the cell are equipped with bulge detection mechanisms that connect to a fixed frame. The bulge detection mechanisms detect the cell expansion pressure in real time, enabling proactive sensing of the cell bulge state. This allows for early detection of early cell degradation characteristics, mitigating safety risks during module operation from the source. A first flexible pressure sensor and a second flexible pressure sensor are deployed. Only when the cell experiences irreversible bulging, continuously compressing the first flexible pressure sensor, and further compressed by the heat sink aluminum sheet, does the system determine that a true bulge has occurred, achieving accurate and reliable fault detection.

Description

Technical Field

[0001] This invention relates to the field of lithium battery testing technology, specifically to a lithium battery module with testing function. Background Technology

[0002] Cell expansion pressure is a key implicit safety monitoring indicator during the operation of lithium battery modules. Essentially, it refers to the internal electrochemical reactions and electrode material structural deformation that occur within the cell during charge-discharge cycles, long-term aging, or abnormal operating conditions, resulting in volume expansion and the application of outward mechanical pressure. This directly characterizes the internal health status and potential safety hazards of the cell, and is a core new monitoring parameter that allows this solution to overcome the limitations of traditional detection methods and achieve multi-dimensional synchronous sensing.

[0003] In most existing lithium battery modules, after assembly, the cells are completely covered by frames, heat insulation components, and structural components, making it impossible to visually observe the bulging state of the cells. Even if a few exposed cells can be visually inspected, this method is extremely time-consuming. By the time the bulging deformation of the cell is clearly visible to the naked eye, irreversible damage has already occurred inside the cell, and the internal gas pressure has long exceeded the safety threshold, which can easily lead to safety accidents such as electrolyte leakage, chain thermal runaway, and even fire and explosion.

[0004] Traditional lithium battery module monitoring methods are relatively simple, limited to collecting only two conventional parameters: single-cell voltage, ambient temperature, and basic surface temperature of the cell. This limited scope and single detection dimension can only identify obvious sudden faults such as overvoltage, undervoltage, and extreme overheating, failing to effectively detect hidden, progressive safety hazards during module operation. Furthermore, it is difficult to identify hidden defects such as early cell aging and bulging, which can lead to overheating at the terminal contacts, localized heat accumulation, and accelerated capacity decay over long-term service. In severe cases, this can induce thermal runaway, short circuits, and fires. Existing modules have significant shortcomings in safety protection and fault prediction capabilities. Therefore, this paper proposes a lithium battery module with detection functions to address these issues. Summary of the Invention

[0005] The purpose of this invention is to provide a lithium battery module with detection function to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: As an optional solution of the lithium battery module with detection function described in this invention, the lithium battery module with detection function includes a battery module shell, a separator plate, a cell detection module and an adaptive temperature adjustment module. The battery module housing has multiple partitions installed inside, and cell detection modules are installed on both sides of the partitions. An adaptive temperature regulation module is installed above the cell detection modules and is sealed to the battery module housing. The battery cell testing module includes a fixed frame, a battery cell, and a heat sink. Fixed frames are provided on both the top and bottom sides of the battery cell, and bulge detection mechanisms that cooperate with and connect to the fixed frames are provided on both sides of the battery cell. Each bulge detection mechanism includes an insulating plate and heat dissipation aluminum fins set on both sides of the insulating plate. A shaping ring is fixedly connected inside the insulating plate, a second flexible pressure sensor is fixedly connected in the center of the shaping ring, and buffer rings are fixedly connected on both sides of the shaping ring. Each side of the heat sink aluminum fin is embedded with a first flexible pressure sensor, and each side of the heat sink aluminum fin is provided with a limit groove, and a buffer ring is provided inside the limit groove. Each heat sink aluminum fin is fixedly connected to a docking plate, and the top of the docking plate is connected to the adaptive temperature adjustment module.

[0007] As an optional solution for a lithium battery module with detection function as described in this invention, a pre-tightening rubber frame is provided on both the upper and lower sides of the heat dissipation aluminum fin, and the outer side of the pre-tightening rubber frame is fixedly connected to the inside of the fixed frame.

[0008] As an optional solution for a lithium battery module with detection function as described in this invention, the pre-tightening rubber frame is made of insulating rubber block, and the cross-section of the pre-tightening rubber frame is concave.

[0009] Traditional lithium battery module monitoring methods are relatively simple, limited to collecting only two conventional parameters: single-cell voltage, ambient temperature, and basic surface temperature of the cell. This limited scope and single detection dimension can only identify obvious sudden faults such as overvoltage, undervoltage, and extreme overheating, failing to effectively capture hidden, progressive safety hazards during module operation. It is difficult to identify hidden defects such as cell aging bulging, internal micro-short circuits, and early degradation in advance. Long-term service can easily lead to overheating at the terminal contacts, localized heat accumulation, and accelerated capacity decay of the cells. In severe cases, this can induce thermal runaway, short circuits, and fires. Existing modules have significant shortcomings in safety protection and fault prediction capabilities. This solution incorporates a bulging detection mechanism between cells to monitor cell expansion pressure in real time, enabling proactive sensing of cell bulging conditions and early detection of early degradation signals, thus mitigating module operation safety risks from the source.

[0010] During the initial stage of normal charging, the battery cell undergoes a momentary and rapid expansion. This deformation is caused by lithium-ion insertion / extraction and temperature changes during charging and discharging. It is a reversible elastic deformation of the battery cell itself, characterized by its short duration, immediate contraction, and non-continuous increase in deformation, and does not fall under the category of fault bulging. This solution deploys a first flexible pressure sensor and a second flexible pressure sensor. Although the normal momentary expansion of the battery cell will briefly compress the first flexible pressure sensor, it will not trigger a fault warning. Only when the battery cell undergoes irreversible bulging, continuously compressing the first flexible pressure sensor, and further continuously compressing the second flexible pressure sensor located in the middle of the insulating plate by the heat sink aluminum sheet, will the system determine that a real bulging has occurred in the battery cell, thus achieving accurate and reliable fault detection.

[0011] During the cell bulge detection process, the cell expands rapidly and instantaneously, squeezing the first flexible pressure sensor and causing the heat sink aluminum fin to undergo slight deformation. By adding a buffer ring, an adaptive buffering effect is achieved, which can prevent the instantaneous deformation of the heat sink aluminum fin from directly squeezing the inner second flexible pressure sensor, effectively filtering the instantaneous expansion interference under normal operating conditions, and ensuring the accuracy of bulge detection and the ability to resist false judgment.

[0012] As an optional solution of the lithium battery module with detection function described in this invention, the adaptive temperature regulation module includes a sealing cover plate that is sealed to the battery module shell, and a heat sink plate is installed inside the sealing cover plate, with uniformly distributed heat dissipation holes inside the heat sink plate. The heat sink is also equipped with multiple docking slots on one side, through which the heat sink connects to the cell detection module.

[0013] As an optional solution of the lithium battery module with detection function described in this invention, a heating deformation plate is fixedly connected to both sides of the heat dissipation hole, and a heating element is fixedly connected to the heat dissipation plate on one side of the heating deformation plate, and the heating deformation plate and the heating element are in contact.

[0014] As an optional solution for a lithium battery module with detection function as described in this invention, a mating plate is fixedly connected to both sides of the heat dissipation hole, and the mating plate is located on one side of the heating deformation plate, and the mating plate is arranged in an arc shape facing the side of the heating deformation plate.

[0015] Battery modules generate a significant amount of heat during charging, and traditional sealed modules generally suffer from poor heat dissipation. This device incorporates multiple sets of heat sink aluminum fins and connecting plates at their upper ends. The connecting plates insert into connecting grooves inside the heat sink to form a metal conductive connection. The heat generated by the battery cells can be rapidly conducted to the heat sink via the heat sink aluminum fins. The heat sink has ventilation holes inside, which, while maintaining a sealed design, increases the contact area between the heat sink and the air, and allows for the timely removal of accumulated heat through air convection, achieving rapid heat dissipation and cooling of the module.

[0016] In extremely cold environments, low temperatures significantly reduce the charging efficiency and charge / discharge performance of lithium batteries. Activating the heating element causes the heating deformation plate to deform and engage with the mating plate, effectively blocking the heat dissipation channels of the heat sink. Both the heat sink and the heat dissipation fins are made of aluminum alloy, which has excellent thermal conductivity, allowing for uniform heat transfer to the cells on both sides. This achieves uniform temperature rise of the module at low temperatures, ensuring normal charging efficiency and performance of the lithium battery in low-temperature environments.

[0017] Meanwhile, the heat dissipation aluminum fins in this device serve both structural support and heat conduction and dissipation functions, providing stable support for the first flexible pressure sensor; the insulating plate has insulation and flame-retardant protection properties, further enhancing the overall operational safety of the lithium battery module.

[0018] Compared with the prior art, the beneficial effects of the present invention are: This solution incorporates a bulging detection mechanism between battery cells to detect cell expansion pressure in real time, enabling proactive sensing of cell bulging status and early detection of early cell degradation characteristics, thus mitigating module operation safety risks from the outset.

[0019] During the initial stage of normal charging, the battery cell undergoes a momentary and rapid expansion. This deformation is caused by lithium-ion insertion / extraction and temperature changes during charging and discharging. It is a reversible elastic deformation of the battery cell itself, characterized by its short duration, immediate contraction, and non-continuous increase in deformation, and does not fall under the category of fault bulging. This solution deploys a first flexible pressure sensor and a second flexible pressure sensor. Although the normal momentary expansion of the battery cell will briefly compress the first flexible pressure sensor, it will not trigger a fault warning. Only when the battery cell undergoes irreversible bulging, continuously compressing the first flexible pressure sensor, and further continuously compressing the second flexible pressure sensor located in the middle of the insulating plate by the heat sink aluminum sheet, will the system determine that a real bulging has occurred in the battery cell, thus achieving accurate and reliable fault detection.

[0020] During the cell bulge detection process, the cell expands rapidly and instantaneously, squeezing the first flexible pressure sensor and causing the heat sink aluminum fin to undergo slight deformation. By adding a buffer ring, an adaptive buffering effect is achieved, which can prevent the instantaneous deformation of the heat sink aluminum fin from directly squeezing the inner second flexible pressure sensor, effectively filtering the instantaneous expansion interference under normal operating conditions, and ensuring the accuracy of bulge detection and the ability to resist false judgment.

[0021] Battery modules generate a significant amount of heat during charging, and traditional sealed modules generally suffer from poor heat dissipation. This device incorporates multiple sets of heat sink aluminum fins and connecting plates at their upper ends. The connecting plates insert into connecting grooves inside the heat sink to form a metal conductive connection. The heat generated by the battery cells can be rapidly conducted to the heat sink via the heat sink aluminum fins. The heat sink has ventilation holes inside, which, while maintaining a sealed design, increases the contact area between the heat sink and the air, and allows for the timely removal of accumulated heat through air convection, achieving rapid heat dissipation and cooling of the module.

[0022] In extremely cold environments, low temperatures significantly reduce the charging efficiency and charge / discharge performance of lithium batteries. Activating the heating element causes the heating deformation plate to deform and engage with the mating plate, effectively blocking the heat dissipation channels of the heat sink. Both the heat sink and the heat dissipation fins are made of aluminum alloy, which has excellent thermal conductivity, allowing for uniform heat transfer to the cells on both sides. This achieves uniform temperature rise of the module at low temperatures, ensuring normal charging efficiency and performance of the lithium battery in low-temperature environments.

[0023] Meanwhile, the heat dissipation aluminum fins in this device serve both structural support and heat conduction and dissipation functions, providing stable support for the first flexible pressure sensor; the insulating plate has insulation and flame-retardant protection properties, further enhancing the overall operational safety of the lithium battery module. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of a lithium battery module with detection function; Figure 2 A schematic diagram of a lithium battery module cell detection module with detection function; Figure 3 This is a schematic diagram of a heat dissipation aluminum sheet for a lithium battery module with detection function. Figure 4 This is a schematic diagram of the installation structure of a second flexible pressure sensor for a lithium battery module with detection function; Figure 5 This is a schematic diagram of an adaptive temperature regulation module for a lithium battery module with detection function. Figure 6 This is a schematic diagram of a heat sink for a lithium battery module with detection function. Figure 7 A cross-sectional view of a heat sink for a lithium battery module with detection function; Figure 8 A lithium battery module with detection function Figure 7 A magnified view of part A.

[0025] In the diagram: 1-Battery module housing, 2-Separator plate, 3-Cell detection module, 301-Fixing frame, 302-Cell, 303-Heat dissipation aluminum sheet, 304-First flexible pressure sensor, 305-Insulating plate, 306-Dating plate, 307-Pre-tightening rubber frame, 308-Limiting groove, 309-Shaping ring, 310-Buffer ring, 311-Second flexible pressure sensor, 4-Adaptive temperature adjustment module, 401-Sealing cover plate, 402-Heat dissipation plate, 403-Heat dissipation hole, 404-Dating groove, 405-Heating deformation plate, 406-Heating element, 407-Matching plate. Detailed Implementation

[0026] Example 1: Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 The present invention provides a technical solution: A lithium battery module with detection function includes a battery module housing 1, a separator 2, a cell detection module 3, and an adaptive temperature regulation module 4; Multiple partition plates 2 are installed inside the battery module housing 1, and cell detection modules 3 are installed on both sides of the partition plates 2 respectively. An adaptive temperature regulation module 4 is set above the cell detection module 3 and is sealed to the battery module housing 1. The battery cell testing module 3 includes a fixed frame 301, a battery cell 302 and a heat dissipation aluminum fin 303. The fixed frame 301 is provided on both the upper and lower sides of the battery cell 302, and a bulge detection mechanism is provided on both sides of the battery cell 302 to cooperate with and connect to the fixed frame 301. Each bulge detection mechanism includes an insulating plate 305 and heat dissipation aluminum fins 303 arranged on both sides of the insulating plate 305. A shaping ring 309 is fixedly connected inside the insulating plate 305. A second flexible pressure sensor 311 is fixedly connected in the center of the shaping ring 309. Buffer rings 310 are fixedly connected on both sides of the shaping ring 309. Each side of the heat sink aluminum fin 303 is embedded with a first flexible pressure sensor 304, and each side of the heat sink aluminum fin 303 is provided with a limiting groove 308, and a buffer ring 310 is provided inside the limiting groove 308. Each heat sink aluminum fin 303 is fixedly connected to a docking plate 306, and the top of the docking plate 306 is docked with the adaptive temperature adjustment module 4.

[0027] The heat sink aluminum fin 303 is provided with pre-tightening rubber brackets 307 on both the upper and lower sides, and the outer side of the pre-tightening rubber bracket 307 is fixedly connected to the inside of the fixed bracket 301.

[0028] The pre-tensioning rubber frame 307 is made of insulating rubber blocks, and the cross-section of the pre-tensioning rubber frame 307 is concave.

[0029] Traditional lithium battery module monitoring methods are relatively simple, limited to collecting only two conventional parameters: single-cell voltage, ambient temperature, and basic surface temperature of the cell. This limited scope and narrow detection capabilities only identify obvious sudden faults such as overvoltage, undervoltage, and extreme overheating, failing to effectively detect hidden, progressive safety hazards during module operation. Furthermore, it struggles to identify latent defects such as cell aging and bulging, internal micro-short circuits, and early degradation in advance. Long-term service can lead to overheating at the terminal contacts, localized heat accumulation, and accelerated capacity decay of the cells. In severe cases, this can induce uncontrolled thermal runaway, short circuits, and fires. Existing modules exhibit significant shortcomings in their safety protection and fault prediction capabilities.

[0030] This solution incorporates a bulging detection mechanism between cells 302 to detect cell expansion pressure in real time, enabling proactive sensing of cell bulging status and early detection of early cell degradation characteristics, thus mitigating module operation safety risks from the outset.

[0031] During the initial stage of normal charging, cell 302 undergoes a momentary rapid expansion. This deformation is caused by lithium-ion insertion / extraction and temperature changes during charging and discharging. It is a reversible elastic deformation of the cell itself, characterized by a short duration, immediate contraction, and non-continuous increase in deformation, and does not fall under the category of fault bulging. This solution deploys a first flexible pressure sensor 304 and a second flexible pressure sensor 311. Although the normal momentary expansion of cell 302 will briefly compress the first flexible pressure sensor 304, it will not trigger a fault warning. Only when the cell undergoes irreversible bulging, continuously compressing the first flexible pressure sensor 304, and further compressed by the heat sink aluminum plate 303, which in turn continuously compresses the second flexible pressure sensor 311 located in the middle of the insulating plate 305, will the system determine that cell 302 has actually bulged, thus achieving accurate and reliable fault detection.

[0032] During the bulge detection of battery cell 302, the battery cell expands rapidly and instantly, squeezing the first flexible pressure sensor 304 and causing the heat sink aluminum fin 303 to undergo slight deformation. By adding a buffer ring 310, an adaptive buffering effect is achieved, which can prevent the instantaneous deformation of the heat sink aluminum fin 303 from directly squeezing the inner second flexible pressure sensor 311, effectively filtering the instantaneous expansion interference under normal working conditions, and ensuring the accuracy and anti-false judgment capability of bulge detection. Also includes the following: An insulating plate 305 is arranged between adjacent heat dissipation aluminum fins 303, serving as electrical isolation and insulation protection. A shaping ring 309, made of non-metallic material, is provided in the center of the insulating plate 305. When the heat dissipation aluminum fins 303 on both sides are deformed by the bulge of the battery cell 302, the shaping ring 309 limits and fixes the second flexible pressure sensor 311, ensuring that the deformation of the insulating plate 305 around the shaping ring 309 will not cause compression interference to the inner second flexible pressure sensor 311, thus ensuring the sensor's installation position is stable and unaffected by surrounding deformation.

[0033] During charging, the battery cell 302 undergoes a momentary and rapid expansion. This expansion is a reversible elastic deformation and is not a faulty bulge. Therefore, buffer rings 310 are arranged on both sides of the shaping ring 309. When the first flexible pressure sensor 304 and the heat sink aluminum fin 303 are subjected to momentary expansion and compression, the buffer rings 310 can play a flexible buffering and stress relief role, preventing the momentary impact force from being directly transmitted and acting on the inner second flexible pressure sensor 311. This effectively filters out false triggering interference caused by the normal momentary expansion of the battery cell 302, and realizes accurate identification and detection of the true bulge state of the battery cell 302.

[0034] The heat sink aluminum fin 303 is equipped with pre-tightening rubber brackets 307 on both sides. The pre-tightening rubber brackets 307 are installed inside the fixed frame 301. With the help of the elasticity of the pre-tightening rubber brackets 307, the heat sink aluminum fin 303 can have a certain self-adjustment capability to adapt to the normal expansion of the battery cell 302 and the structural assembly error, ensuring the stable and reliable pressure transmission path, which is conducive to the accurate collection and detection of subsequent bulging pressure. In actual vehicle power battery maintenance and replacement scenarios, the industry generally does not require replacing the entire lithium battery module. Instead, it retains the intact and normal cells within the module and replaces only the failed or abnormal cells. Existing structures lack pinpoint detection capabilities, requiring all cells to be disassembled one by one and manually inspected during maintenance. This process is cumbersome and has extremely low replacement efficiency. This device, by deploying multiple independent bulge detection mechanisms inside the module, can accurately locate and directly screen abnormal cells 302, improving inspection efficiency. It enables the rapid pinpoint removal and individual replacement of some faulty cells 302, significantly improving the efficiency of cell 302 inspection and replacement operations, and reducing maintenance time and repair costs.

[0035] Example 2: This example is an improvement upon Example 1. Please refer to [link / reference]. Figure 5 , Figure 6 , Figure 7 and Figure 8 Specifically, the adaptive temperature regulation module 4 includes a sealing cover plate 401 that is sealed to fit the battery module housing 1. A heat sink plate 402 is installed inside the sealing cover plate 401, and the heat sink plate 402 has evenly distributed heat dissipation holes 403 inside. The heat sink 402 is also provided with multiple sets of docking slots 404 on one side, and the heat sink 402 is connected to the cell detection module 3 through the docking slots 404.

[0036] Heating deformation plates 405 are fixedly connected to both sides of the heat dissipation hole 403, and heating plates 406 are fixedly connected to the heat dissipation plate 402 on one side of the heating deformation plate 405, and the heating deformation plate 405 and the heating plates 406 are in contact.

[0037] The heat dissipation hole 403 is also fixedly connected to the two sides of the interior with a mating plate 407, and the mating plate 407 is located on one side of the heating deformation plate 405, and the mating plate 407 is set with an arc surface facing the side of the heating deformation plate 405.

[0038] Battery modules generate a large amount of heat during charging, and traditional sealed modules generally suffer from poor heat dissipation. This device can achieve rapid heat dissipation while ensuring a sealed design. Specifically, it is equipped with multiple sets of heat dissipation aluminum fins 303 and docking plates 306 connected to their upper ends. The docking plates 306 are inserted into the docking grooves 404 inside the heat dissipation plate 402 to form a metal conductive connection. The working heat of the battery cell 302 can be quickly conducted to the heat dissipation plate 402 through the heat dissipation aluminum fins 303. The heat dissipation plate 402 has heat dissipation holes 403 inside. While ensuring a sealed design, this increases the contact area between the heat dissipation plate 402 and the air, and also allows the accumulated heat to be carried away in time by air convection, achieving rapid heat dissipation and cooling of the module.

[0039] In extremely cold environments, low temperatures significantly reduce the charging efficiency and charge / discharge performance of lithium batteries. At this time, the heating element 406 is activated, causing the heating deformation plate 405 to deform and engage with the mating plate 407, thus blocking the heat dissipation channels of the heat sink 402. Both the heat sink 402 and the heat dissipation aluminum sheet 303 are made of aluminum alloy, which has excellent thermal conductivity, allowing for uniform heat transfer to the battery cells 302 on both sides. This achieves uniform temperature rise of the module at low temperatures, ensuring the normal charging efficiency and performance of the lithium battery in low-temperature environments.

[0040] Meanwhile, the heat dissipation aluminum fin 303 in this device serves both as structural support and heat conduction, providing stable support for the first flexible pressure sensor 304; the insulating plate 305 has insulation and flame-retardant protection properties, further enhancing the overall operational safety of the lithium battery module.

[0041] Also includes the following: The heat dissipation hole 403 has a rectangular cross-section, and the heating deformation plate 405 is strip-shaped. When charging at low temperatures, the heating element 406 heats the heating deformation plate 405, causing it to deform and contact the arc surface of the mating plate 407 above, effectively sealing both ends of the heat dissipation hole 403. This allows heat to be dissipated through the heat dissipation aluminum fin 303, achieving preheating of the battery module casing 1. An internal temperature sensing unit (not shown in the figure) is also provided to effectively monitor the internal temperature. Once the temperature reaches the target, preheating stops.

[0042] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only for the purpose of helping to understand the method and core ideas of the present invention. The above descriptions are only preferred embodiments of the present invention. It should be noted that due to the limitations of textual expression, while there are objectively infinite specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of the present invention, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of the present invention.

Claims

1. A lithium battery module with detection function, characterized in that: It includes a battery module housing (1), a separator (2), a cell detection module (3), and an adaptive temperature regulation module (4); Multiple partitions (2) are installed inside the battery module housing (1), and cell detection modules (3) are installed on both sides of the partitions (2). An adaptive temperature regulation module (4) is installed above the cell detection module (3) and is sealed to the battery module housing (1). The battery cell testing module (3) includes a fixed frame (301), a battery cell (302) and a heat sink aluminum plate (303). The fixed frame (301) is provided on both the upper and lower sides of the battery cell (302). A bulge detection mechanism that cooperates with and connects to the fixed frame (301) is provided on both sides of the battery cell (302). Each bulge detection mechanism includes an insulating plate (305) and heat dissipation aluminum fins (303) set on both sides of the insulating plate (305). A shaping ring (309) is fixedly connected inside the insulating plate (305). A second flexible pressure sensor (311) is fixedly connected in the center of the shaping ring (309). Buffer rings (310) are fixedly connected on both sides of the shaping ring (309). A first flexible pressure sensor (304) is embedded on one side of the heat dissipation aluminum fin (303), and a limiting groove (308) is opened on the other side of the heat dissipation aluminum fin (303), and a buffer ring (310) is provided on the inner side of the limiting groove (308). Each heat sink aluminum fin (303) is fixedly connected to a docking plate (306), and the top of the docking plate (306) is docked with the adaptive temperature regulation module (4). The adaptive temperature regulation module (4) includes a sealing cover (401) that is sealed to fit the battery module housing (1). A heat sink (402) is installed inside the sealing cover (401), and the heat sink (402) has evenly distributed heat dissipation holes (403) inside. The heat sink (402) is also provided with multiple sets of docking slots (404) on one side, and the heat sink (402) docks with the docking plate (306) of the cell detection module (3) through the docking slots (404); Heating deformation plates (405) are fixedly connected to both sides of the heat dissipation hole (403), and heating plates (406) are fixedly connected to the heat dissipation plate (402) on one side of the heating deformation plate (405), and the heating deformation plate (405) and the heating plate (406) are in contact. The heat dissipation hole (403) is also fixedly connected to the two sides of the interior with a mating plate (407), and the mating plate (407) is located on one side of the heating deformation plate (405), and the mating plate (407) is set with an arc surface on the side facing the heating deformation plate (405); The heating deformation plate (405) can be heated and deformed under the action of the heating plate (406) and cooperate with the mating plate (407) to block the heat dissipation channel of the heat dissipation plate (402).

2. A lithium battery module with detection function according to claim 1, characterized in that: The heat dissipation aluminum fin (303) is provided with pre-tightened rubber brackets (307) on both the upper and lower sides, and the outer side of the pre-tightened rubber brackets (307) is fixedly connected to the inside of the fixed frame (301).

3. A lithium battery module with detection function according to claim 2, characterized in that: The pre-tightening rubber frame (307) is made of insulating rubber blocks, and the cross section of the pre-tightening rubber frame (307) is concave.

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