Battery cell heat production detection device and system

Abstract

The utility model relates to the technical field of battery measurement, in particular to a battery cell heat production detection device and system, which comprises an environmental box, a quick-release bracket, a first thermoelectric coupler and a second thermoelectric coupler, and is characterized in that the quick-release bracket is arranged in the environmental box and is used for clamping a battery cell; the first thermoelectric coupler is arranged on the surface of the battery cell, and the second thermoelectric coupler is arranged in the environment box. The to-be-tested battery cell can be suspended in the middle of the environment box through the quick-release bracket, so that the to-be-tested battery cell can be ensured to fully exchange heat with the environment and uniformly exchange heat with the environment, uneven heat dissipation caused by the fact that the surface of the to-be-tested battery cell is in contact with the bottom surface of the environment box can be avoided, and the measured temperature is ensured to be only influenced by heat production of the to-be-tested battery cell and heat exchange of the environment. The temperature change of the battery cell and the change of the environment temperature in the environment box are respectively measured in real time through the first thermoelectric coupling and the second thermoelectric coupling, and the heat production of the battery cell can be calculated according to the temperature change values measured by the first thermoelectric coupling and the second thermoelectric coupling in combination with the inherent parameters of the battery cell to be measured and the environment.

Description

Technical Field

[0001] The utility model relates to the technical field of battery measurement, in particular to a device and a system for detecting the heat generation of a battery cell. Background Art

[0002] During the research of battery thermal management or the development of products, it is often necessary to calculate the heat generation and heat dissipation of the battery cell itself. Currently, on the market, the measurement of heat generation mainly uses an adiabatic calorimeter or an isentropic calorimeter to measure the temperature of the battery cell, and then manual processing is carried out offline. Combining data such as internal resistance and voltage to calculate the heat generation of the battery cell, the test cycle is often long, and the amount of data processed manually is large.

[0003] In order to more conveniently measure the thermal characteristics of the battery cell, there is currently a temperature detection method and device. The device mainly consists of a graphite heat conducting plate, a PCM, and a patch-type thermocouple. By measuring the internal resistance of the battery cell to calculate the heat generation of the battery cell, and combining the temperature measured by the thermocouple, the temperature at adjacent grids is gradually solved, and the temperature values at each position of the battery cell are calculated after iteration.

[0004] Although the above device simplifies the complexity of the test equipment, there are the following two problems. First, the device still needs to rely on traditional tooling. During the test, one surface of the battery cell will inevitably contact the bottom of the temperature chamber (either the large surface or the bottom surface), which results in different heat dissipation conditions for the six surfaces of the battery cell, making the measured temperature have a large error. Second, the calculation of the heat generation of the device still needs to rely on the internal resistance data of the battery cell, which makes the calculated heat generation depend on the accuracy of the internal resistance test. If the working conditions are similar to those during the internal resistance test, the accuracy may be better, but if the working conditions are different from those during the internal resistance test, such as different rates, there may be a large error. Summary of the Utility Model

[0005] The utility model provides a device and a system for detecting the heat generation of a battery cell, which are used to solve the defect that the heat generation data of the battery cell measured by the existing device for detecting the heat generation of the battery cell has a large error, realize uniform heat exchange between the battery cell and the environment, ensure that the measured temperature is only affected by the heat generation of the battery cell and the heat exchange with the environment, and improve the measurement accuracy of the heat generation of the battery cell.

[0006] The utility model provides a device for detecting the heat generation of a battery cell, including an environmental chamber, a quick-release bracket, a first thermocouple, and a second thermocouple. Among them, the environmental chamber provides an environment for detecting the heat generation of the battery cell; the quick-release bracket is arranged in the environmental chamber, and the quick-release bracket is used to clamp the battery cell to suspend the battery cell in the environmental chamber; the first thermocouple is arranged on the surface of the battery cell and is used to measure the temperature change of the battery cell; the second thermocouple is arranged in the environmental chamber and is used to measure the change of the environmental temperature in the environmental chamber.

[0007] According to a device for detecting the heat generation amount of an electric core provided by the present utility model, the quick-release bracket includes a bracket base and a clamping assembly. Among them, the bracket base is arranged on the bottom surface of the environmental chamber, and two parallel and opposite sliding guide rails are provided on the bracket base; there are two clamping assemblies, and both clamping assemblies are movably arranged on the sliding guide rails, and the two clamping assemblies are adapted to move closer to or away from each other along the sliding guide rails to clamp or loosen the electric core.

[0008] According to a device for detecting the heat generation amount of an electric core provided by the present utility model, the clamping assembly includes two vertical rods and a horizontal rod. Among them, the two vertical rods are respectively movably arranged in the two sliding guide rails; the horizontal rod is connected between the two vertical rods.

[0009] According to a device for detecting the heat generation amount of an electric core provided by the present utility model, a plurality of positioning connection grooves are correspondingly arranged on the two vertical rods, and the two ends of the horizontal rod are respectively detachably connected to the positioning connection grooves.

[0010] According to a device for detecting the heat generation amount of an electric core provided by the present utility model, vertical guide rails are correspondingly arranged on the two vertical rods, and the two ends of the horizontal rod are respectively slidably connected to the two vertical guide rails.

[0011] According to a device for detecting the heat generation amount of an electric core provided by the present utility model, the vertical rod is a telescopic rod member, so as to adjust the height of the horizontal rod through the telescopic of the vertical rod.

[0012] According to a device for detecting the heat generation amount of an electric core provided by the present utility model, the two clamping assemblies are connected by a quick-release connecting piece, and there are at least two groups of quick-release connecting pieces, which are symmetrically arranged on the side parts of the clamping assemblies.

[0013] According to a device for detecting the heat generation amount of an electric core provided by the present utility model, the quick-release connecting piece includes a bolt member and a fastening nut member connected to the bolt member. The bolt member sequentially penetrates through the two clamping assemblies and is fastened by the fastening nut member.

[0014] According to a device for detecting the heat generation amount of an electric core provided by the present utility model, the lower end of the vertical rod penetrates through the sliding guide rail, and a raised block is circumferentially arranged on the vertical rod, and the lower end surface of the raised block is clamped on the side edge of the sliding guide rail.

[0015] The present utility model also provides a system for detecting the heat generation amount of an electric core, including the device for detecting the heat generation amount of an electric core described in any one of the above, and further including an electric core heat model calculation module. The electric core heat model calculation module receives the temperature measurement data of the first thermocouple and the second thermocouple and calculates the heat generation amount of the electric core.

[0016] The cell heat generation detection device and system provided by the present utility model can suspend the cell to be tested in the middle of the environmental chamber through a quick-release bracket. This not only ensures that the cell to be tested can fully exchange heat with the environment, guarantees uniform heat exchange between the cell to be tested and the environment, but also avoids uneven heat dissipation caused by the surface of the cell to be tested contacting the bottom surface of the environmental chamber, ensuring that the measured temperature is only affected by the heat generation of the cell to be tested and environmental heat exchange. By using the first thermocouple and the second thermocouple to respectively measure the temperature change of the cell and the temperature change of the environment inside the environmental chamber in real time, the heat generation of the cell can be calculated based on the temperature change values measured by the first thermocouple and the second thermocouple in combination with the inherent parameters of the cell to be tested and the environment. Brief Description of the Drawings

[0017] In order to more clearly illustrate the technical solutions in the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a schematic structural diagram of the quick-release bracket of the cell heat generation detection device provided by the present utility model.

[0019] Reference Numerals: 1, bracket base; 2, sliding guide rail; 3, clamping assembly; 31, vertical rod; 311, positioning connection groove; 312, protruding block; 32, horizontal rod; 4, quick-release connector; 41, bolt member; 42, fastening nut member. Detailed Embodiments

[0020] To make the objectives, technical solutions, and advantages of the present utility model clearer, the following will clearly and completely describe the technical solutions in the present utility model with reference to the drawings in the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art without creative efforts based on the embodiments in the present utility model fall within the scope of protection of the present utility model.

[0021] In the description of the embodiments of the present utility model, it should be noted that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the embodiments of the present utility model.

[0022] In the description of the embodiments of the present utility model, it should be noted that, unless otherwise clearly defined and limited, the terms "connected" and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be directly connected, or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0023] In the embodiments of the present utility model, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below" and "beneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0024] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, without conflict, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples.

[0025] The following describes the specific structure and working process of the cell heat generation detection device and system of the present utility model with reference to the accompanying drawings.

[0026] An embodiment of the present utility model provides a cell heat generation detection device, including an environmental chamber, a quick-release bracket, a first thermocouple, and a second thermocouple. Among them, the environmental chamber provides a detection environment for the cell heat generation; the quick-release bracket is arranged inside the environmental chamber, and the quick-release bracket is used to clamp the cell to suspend the cell inside the environmental chamber; the first thermocouple is arranged on the surface of the cell and is used to measure the temperature change of the cell; the second thermocouple is arranged inside the environmental chamber and is used to measure the change of the environmental temperature inside the environmental chamber.

[0027] It can be understood that in the cell heat generation amount detection device of this embodiment, the cell to be measured can be suspended in the middle of the environmental chamber through the quick-release bracket, which can not only ensure that the cell to be measured exchanges heat with the environment sufficiently and uniformly, but also avoid uneven heat dissipation caused by the surface of the cell to be measured contacting the bottom surface of the environmental chamber, ensuring that the measured temperature is only affected by the heat generation of the cell to be measured and the heat exchange with the environment. By using the first thermocouple and the second thermocouple to measure the temperature change of the cell and the temperature change of the environment in the environmental chamber in real time respectively, the heat generation amount of the cell can be calculated according to the temperature change values measured by the first thermocouple and the second thermocouple and the inherent parameters of the cell to be measured and the environment.

[0028] It should be understood that the measurement of the cell heat generation amount by the cell heat generation amount detection device of this embodiment relies on the theory of engineering thermodynamics. First, taking the cell to be measured as the analysis object, according to the law of conservation of energy Q 电芯 =Q 产热 +Q 散热 , there is formula one: Q 产热 =Q 电芯 -Q 散热 . According to engineering thermodynamics, formula two: Q 电芯 =C*m*(T2 - T1), formula three: Q 散热 =k*A*(T 电芯 -T 环境 )*Δt, where C is the specific heat capacity of the cell, m is the mass of the cell, T2 and T1 are the temperatures T1 and T2 of the cell within a time step Δt respectively, k is the heat transfer coefficient between the cell and the environment, A is the heat dissipation area of the surface to be calculated (for example, if calculating the heat dissipation of the large surface, A is the area of the large surface), T 电芯 is the average temperature of the cell within a time step Δt, and T 环境 is the average temperature of the environment within a time step Δt. Therefore, according to the first thermocouple and the second thermocouple of the cell heat generation amount detection device of this embodiment, the temperature T1 and T2 of the cell within a time step Δt and the average temperature T 电芯 of the cell within a time step Δt, the average temperature T 环境 of the environment within a time step Δt can be measured. By using the known given specific heat capacity C of the cell, the mass m of the cell, the heat transfer coefficient k between the cell and the environment, the heat dissipation area A of the surface to be calculated, and Δt, and combining formula one, formula two and formula three, the heat generation amount Q 产热 of the cell can be measured.

[0029] In some embodiments of a cell heat generation amount detection device of the present utility model, refer to Figure 1As shown in the figure, the quick-release bracket includes a bracket base 1 and a clamping assembly 3. Among them, the bracket base 1 is arranged on the bottom surface of the environmental chamber, and two parallel and opposite sliding guide rails 2 are provided on the bracket base 1; there are two clamping assemblies 3, and both clamping assemblies 3 are movably arranged on the sliding guide rails 2, and the two clamping assemblies 3 are adapted to approach or move away along the sliding guide rails 2 to clamp or release the battery cell.

[0030] It can be understood that the quick-release bracket of this embodiment includes a bracket base 1 and two clamping assemblies 3. The bracket base 1 is a fixed part and can be placed on the bottom surface of the environmental chamber during use. The clamping assemblies 3 are movably arranged on the two sliding guide rails 2 on the bracket base 1, and the two clamping assemblies 3 can move along the sliding guide rails 2. When it is necessary to detect the heat generation of the battery cell to be measured, the battery cell to be measured is placed between the two clamping assemblies 3, and then the two clamping assemblies 3 are moved closer to clamp the battery cell to be measured. In this way, the battery cell to be measured can be clamped and suspended in the middle of the environmental chamber, and the battery cell to be measured will not contact the environmental chamber, and can fully exchange heat with the environment inside the environmental chamber, ensuring that the measured temperature is only affected by the heat generation of the battery cell and the environmental heat exchange.

[0031] Specifically, in some examples of a battery cell heat generation detection device of the present utility model, continue to refer to Figure 1 As shown in the figure, the clamping assembly 3 includes two vertical rods 31 and a horizontal rod 32. Among them, the two vertical rods 31 are respectively movably arranged in the two sliding guide rails 2. The lower end of each vertical rod 31 passes through the sliding guide rail 2, and a raised block 312 is circumferentially arranged on the vertical rod 31, and the lower end surface of the raised block 312 is clamped on the side of the sliding guide rail 2; the horizontal rod 32 is connected between the two vertical rods 31.

[0032] It can be understood that the two vertical rods 31 of the clamping assembly 3 are arranged in the two sliding guide rails 2, which can ensure that the clamping assembly 3 can move along the direction of the sliding guide rail 2. The two clamping assemblies 3 approach each other along the sliding guide rail 2, and the horizontal rod 32 of the clamping assembly 3 can clamp the battery cell to be measured. Refer to Figure 1 As shown in the figure, each clamping assembly 3 includes two horizontal rods 32. As the two clamping assemblies 3 approach each other, the four horizontal rods 32 can clamp the battery cell to be measured. Of course, the number of horizontal rods 32 can also be other numbers, as long as at least one horizontal rod 32 in each clamping assembly 3 can satisfy the clamping of the battery cell to be measured.

[0033] In the quick-release bracket structure of the battery cell heat generation detection device provided by the present utility model, in addition to ensuring that the two clamping assemblies 3 can approach or move away from each other to realize clamping or releasing of the battery cell to be measured, at the same time, in some embodiments, the height of the horizontal rod 32 in the clamping assembly 3 can also be adjusted to adapt to the clamping of battery cells to be measured with different sizes.

[0034] In some specific examples, refer toFigure 1 As shown, a plurality of positioning connection grooves 311 are correspondingly arranged on the two vertical rods 31, and the two ends of the horizontal rod 32 are detachably connected to the positioning connection grooves 311 respectively. It can be understood that the positioning connection grooves 311 are arranged at different heights on each vertical rod 31, and the positioning connection grooves 311 on the two vertical rods 31 of each clamping assembly 3 are arranged in one-to-one correspondence in height. When it is necessary to adjust the height of the horizontal rod 32, the horizontal rod 32 is detached from the vertical rod 31 and connected to the positioning connection groove 311 at the required height, so that the horizontal rod 32 can be adjusted to the corresponding height.

[0035] In some other specific examples, vertical guide rails (not shown in the figure) are correspondingly arranged on the two vertical rods 31, and the two ends of the horizontal rod 32 are respectively slidably connected to the two vertical guide rails. By vertically moving the horizontal rod 32 on the vertical guide rails, the height of the horizontal rod 32 can be adjusted to the required height. It should be understood that a positioning pin can be arranged between the horizontal rod 32 and the vertical guide rails in this example. When the horizontal rod 32 moves to the required height, the positioning pin can be inserted to make the horizontal rod 32 and the vertical rod 31 keep relatively fixed.

[0036] In still some other specific examples, the vertical rod 31 is a telescopic rod member (not shown in the figure) to adjust the height of the horizontal rod 32 by the telescopic movement of the vertical rod 31. It should be understood that the vertical rod 31 in this example can be a structure of multiple nested tubes, and the height of the horizontal rod 32 is adjusted by the relative extension degree of the multiple nested tubes. Similarly, after the telescopic rod is telescoped to the required amount, it can also be fixed by inserting a positioning pin so that the horizontal rod 32 is at the required height.

[0037] Based on the structure of the cell heat generation detection device in the above several embodiments of the present invention, in this embodiment, the structure of the two clamping assemblies 3 for clamping the cell to be tested is further described. In this embodiment, continue to refer to Figure 1 As shown, the two clamping assemblies 3 are connected by quick-release connectors 4. There are at least two groups of quick-release connectors 4, which are symmetrically arranged on the side parts of the clamping assemblies 3. It can be understood that the quick-release connectors 4 in this embodiment can connect the horizontal rods 32 of the two clamping assemblies 3. One quick-release connector 4 is connected to each of the two ends of the horizontal rods 32 of the two clamping assemblies 3. By tightening or loosening the quick-release connectors 4, the two clamping assemblies 3 can clamp and release the cell to be tested.

[0038] Specifically, in some examples, the quick-release connecting member 4 includes a bolt member 41 and a fastening nut member 42 connected to the bolt member 41. The bolt member 41 sequentially passes through the two clamping assemblies 3 and is fastened by the fastening nut member 42. It can be understood that the same ends of the two cross bars 32 are penetrated by the bolt member 41, the head of the bolt member 41 is located outside one cross bar 32, the tail of the bolt member 41 sequentially passes through the two cross bars 32, and then the fastening nut member 42 is connected to the tail of the bolt member 41. The fastening nut member 42 is provided with rotating fins, and the rotating fins can be used to quickly realize the rotation of the fastening nut member 42 on the bolt member 41. Place the cell to be measured between the two cross bars 32, tighten the fastening nut members 42 at both ends, and the cooperation of the bolt member 41 and the fastening nut member 42 causes the two cross bars 32 to move relatively closer to clamp the cell to be measured.

[0039] It should be understood that according to the different numbers of cross bars 32 on the clamping assembly 3, different numbers of quick-release connecting members 4 need to be correspondingly set. In principle, a set of quick-release connecting members 4 is respectively arranged at both ends of each cross bar 32. For example, Figure 1 in the figure, each clamping assembly 3 includes two upper and lower cross bars 32, and correspondingly four sets of quick-release connecting members 4 are arranged.

[0040] The cell heat generation amount detection system provided by the present invention will be described below. The cell heat generation amount detection system described below can be mutually corresponding and referred to the cell heat generation amount detection device described above.

[0041] In some embodiments of a cell heat generation amount detection system provided by the present invention, the cell heat generation amount detection system includes the cell heat generation amount detection device of any one of the above embodiments, and further includes a cell thermal model calculation module. The cell thermal model calculation module receives the temperature measurement data of the first thermocouple and the second thermocouple and calculates the cell heat generation amount.

[0042] It should be understood that the cell thermal model calculation module in this embodiment can calculate the cell heat generation amount in real time according to the manually input parameters and the real-time measured temperature. The cell thermal model calculation module imports formula one: Q 产热 =Q 电芯 -Q 散热 , formula two: Q 电芯 =C*m*(T2-T1) and formula three: Q 散热 =k*A*(T 电芯 -T 环境 )*Δt. Then, according to the first thermocouple and the second thermocouple of the cell heat generation amount detection device, the temperature T1 and T2 of the cell within a time step Δt and the average temperature T of the cell within a time step Δt 电芯 , the average environmental temperature T within a time step Δt 环境, the heat generation Q of the battery cell can be measured by the operator inputting the given specific heat capacity C of the battery cell, the mass m of the battery cell, the heat transfer coefficient k between the cell and the environment, the heat dissipation area A of the surface to be measured, and Δt 产热 .

[0043] When using the battery cell heat generation detection system of this embodiment to measure the heat generation of the battery cell, first arrange the first thermocouple on the battery cell to be measured, and enable the first thermocouple to achieve data interconnection with the battery cell thermal model calculation module; then place the quick-release bracket in the environmental chamber, place the quick-release bracket inside the environmental chamber, and set the second thermocouple in the environmental chamber to enable the second thermocouple to achieve data interconnection with the battery cell thermal model calculation module for detecting the change of the environmental temperature inside the environmental chamber; place the battery cell to be measured in the quick-release bracket, adjust the quick-release bracket to clamp the battery cell to be measured; adjust the quick-release connector 4 to fixedly clamp the battery cell to be measured; start the test, set the temperature of the environmental chamber, the operator inputs the given specific heat capacity C of the battery cell, the mass m of the battery cell, the heat transfer coefficient k between the cell and the environment, the heat dissipation area A of the surface to be measured, and Δt, start the device to start measurement, the first thermocouple and the second thermocouple measure the temperature T1 and T2 of the battery cell within a time step Δt and the average temperature T of the battery cell within a time step Δt 电芯 , the average environmental temperature T within a time step Δt 环境 , and the heat generation Q of the battery cell is calculated by the battery cell thermal model calculation module 产热 .

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A device for detecting the heat generation amount of an electric core, characterized in that, Comprising: An environmental chamber, providing an environment for detecting the heat generation of the battery cell; A quick-release bracket, arranged inside the environmental chamber, for clamping the battery cell to suspend the battery cell inside the environmental chamber; A first thermocouple, arranged on the surface of the battery cell, for measuring the temperature change of the battery cell; A second thermocouple, arranged inside the environmental chamber, for measuring the change of the environmental temperature inside the environmental chamber.

2. The calorific value detection device for the battery cell according to claim 1, wherein The quick-release bracket includes: A bracket base (1), the bracket base (1) is arranged on the bottom surface of the environmental chamber, and two parallel and opposite sliding guide rails (2) are provided on the bracket base (1); Clamping components (3), there are two clamping components (3), both of the two clamping components (3) are movably arranged on the sliding guide rails (2), and the two clamping components (3) are adapted to move closer to or away from each other along the sliding guide rails (2) to clamp or release the battery cell.

3. The heat generation amount detection device for the battery cell according to claim 2, wherein, The clamping component (3) includes: Two vertical rods (31), the two vertical rods (31) are respectively movably arranged inside the two sliding guide rails (2); A horizontal rod (32), the horizontal rod (32) is connected between the two vertical rods (31).

4. The cell heat generation amount detection device according to claim 3, wherein A plurality of positioning connection grooves (311) are correspondingly arranged on the two vertical rods (31), and the two ends of the horizontal rod (32) are respectively detachably connected to the positioning connection grooves (311).

5. The calorific value detection device for the battery cell according to claim 3, wherein, Vertical guide rails are correspondingly arranged on the two vertical rods (31), and the two ends of the horizontal rod (32) are respectively slidably connected to the two vertical guide rails.

6. The calorific value detection device for the battery cell according to claim 3, wherein, The vertical rod (31) is a telescopic rod member, so as to adjust the height of the horizontal rod (32) through the telescopic movement of the vertical rod (31).

7. The heat generation amount detection device for the battery cell according to any one of claims 2 to 6, characterized in that, The two clamping components (3) are connected by a quick-release connector (4), and there are at least two groups of the quick-release connectors (4), symmetrically arranged on the sides of the clamping components (3).

8. The cell heat generation amount detection device according to claim 7, characterized in that, The quick-release connector (4) includes a bolt member (41) and a fastening nut member (42) connected to the bolt member (41), the bolt member (41) sequentially penetrates through the two clamping components (3), and is fastened by the fastening nut member (42).

9. The calorific value detection device for the battery cell according to any one of claims 3 to 6, characterized in that, The lower end of the vertical rod (31) penetrates through the sliding guide rail (2), and a raised block (312) is circumferentially arranged on the vertical rod (31), and the lower end surface of the raised block (312) is clamped on the side edge of the sliding guide rail (2).

10. A system for detecting the heat generation of an electric cell, characterized in that, Comprising the battery cell heat generation detection device according to any one of claims 1 to 9, further comprising a battery cell thermal model calculation module, which receives the temperature measurement data of the first thermocouple and the second thermocouple and calculates the battery cell heat generation.

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