Battery cell temperature acquisition structure, battery module and power battery

Abstract

The utility model provides a battery cell temperature acquisition structure, a battery module and a power battery. The battery cell temperature acquisition structure comprises a circuit board, a temperature sensor and a heat conduction piece, the circuit board is used for being electrically connected with the battery cell; the temperature sensor is arranged on one side of the circuit board, the temperature sensor is electrically connected with the circuit board, the heat conduction piece is arranged on the side, away from the temperature sensor, of the circuit board, and the heat conduction piece is located on the area, where the temperature sensor is installed, of the circuit board and used for being in heat conduction connection with the battery cell. And the circuit board is in heat conduction connection with the temperature sensor and the heat conduction piece, so that the heat, received by the heat conduction piece, of the battery cell is transferred to the temperature sensor.

Description

Technical Field

[0001] The present application relates to the technical field of lithium batteries, and in particular to a battery cell temperature collection structure, a battery module and a power battery. Background Art

[0002] When the battery pack is charging or discharging, the battery cells will generate a lot of heat. If the heat accumulates on the battery cells for a long time, it will cause fire or even explosion. Therefore, it is necessary to collect the temperature of the battery cells in the battery pack to facilitate thermal management of the battery pack. At present, most battery packs have temperature sensors installed on the conductive parts outside the battery cells. The connection between the conductive parts and the battery cells will generate heat, resulting in the temperature rise and fall amplitude and rate of the connection between the conductive parts and the battery cells being much greater than the temperature rise and fall amplitude and rate of the battery cells. The battery cell temperature collected by the existing temperature sensors is not accurate enough. Utility Model Content

[0003] The present application provides a battery cell temperature collection structure, a battery module and a power battery to solve the problem that the temperature collection results of the battery cells in the known technology are not accurate enough.

[0004] In a first aspect, the present application provides a battery cell temperature collection structure, comprising a circuit board, a temperature sensor, and a heat conductive member; the circuit board is used to be electrically connected to the battery cell; the temperature sensor is arranged on one side of the circuit board, and the temperature sensor is electrically connected to the circuit board; the heat conductive member is arranged on a side of the circuit board away from the temperature sensor, the heat conductive member is located on the area of ​​the circuit board where the temperature sensor is installed, and is used to be thermally connected to the battery cell, the circuit board is thermally connected to the temperature sensor and the heat conductive member to transfer the heat of the battery cell received by the heat conductive member to the temperature sensor.

[0005] In a possible embodiment, the battery cell temperature collection structure also includes a first reinforcement member, which is arranged between the circuit board and the heat conductive member, one side of the first reinforcement member is connected to the circuit board and thermally connected to the circuit board, and the other side of the first reinforcement member is connected to the heat conductive member and thermally connected to the heat conductive member.

[0006] In a possible implementation manner, an outer contour of the first reinforcement component exceeds an outer contour of the heat conducting component.

[0007] In a possible implementation, the battery core temperature collection structure further includes a bracket, the bracket is disposed on a side of the temperature sensor away from the circuit board, and the circuit board is connected to the bracket.

[0008] In a possible implementation, the battery core temperature collection structure further includes an elastic member, which is disposed between the bracket and the temperature sensor, one side of the elastic member elastically abuts against the bracket, and the other side of the elastic member elastically abuts against the temperature sensor.

[0009] In a possible implementation, the battery cell temperature collection structure further includes a conductive member, which is disposed on a side of the bracket away from the circuit board, is electrically connected to the circuit board, and is used to be electrically connected to the battery cell.

[0010] In a possible embodiment, a mounting groove is formed on a side of the bracket close to the conductive member, the conductive member is accommodated in the mounting groove, a through hole is formed on the bottom wall of the mounting groove, the circuit board at least partially extends into the through hole and is electrically connected to the conductive member.

[0011] In a possible implementation, the circuit board is provided with a conductive connector, a first end of the conductive connector is connected to the circuit board and electrically connected to the circuit board, and a second end of the conductive connector extends into the through hole to abut against the conductive member and is electrically connected to the conductive member.

[0012] In a possible embodiment, the battery cell temperature collection structure also includes a connector and a second reinforcement member, the connector and the temperature sensor are arranged on the same side of the circuit board, and the connector is electrically connected to the circuit board, the second reinforcement member is arranged on a side of the circuit board away from the connector, and the second reinforcement member is located in the area of ​​the circuit board connected to the connector.

[0013] In a second aspect, the present application also provides a battery module, including a battery cell and the above-mentioned battery cell temperature collection structure, wherein the battery cell is located on a side of the circuit board away from the bracket, the battery cell is thermally connected to the heat conductive member, and the battery cell is electrically connected to the conductive member.

[0014] In a possible embodiment, the battery core includes a main body and a connecting portion, the main body presses against a side of the heat conductive member away from the circuit board and is thermally connected to the heat conductive member, the connecting portion is protruded from a side of the main body close to the heat conductive member, the connecting portion presses against the conductive member, and is electrically connected to the conductive member.

[0015] In a third aspect, the present application also provides a power battery, including a battery box and the above-mentioned battery module, wherein the battery module is installed in the battery box.

[0016] In the battery cell temperature collection structure of the present application, the temperature sensor is arranged on the side of the circuit board away from the battery cell, the heat conductive member is arranged on the side of the circuit board close to the battery cell, and the temperature of the battery cell is collected after the heat conductive member is thermally connected to the battery cell. Since the heat conductive member and the temperature sensor are respectively attached to the opposite sides of the same area of ​​the circuit board, the temperature of the battery cell received by the heat conductive member can be directly transmitted to the temperature sensor through the circuit board, thereby improving the accuracy of the temperature sensor's collection result of the battery cell temperature. In addition, the temperature sensor is installed on the circuit board to avoid direct contact between the temperature sensor and the battery cell, which may easily damage the temperature sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional schematic diagram of the battery core temperature collection structure of the present application in one embodiment.

[0018] Figure 2 It is an exploded schematic diagram of a part of the structure of the battery core temperature collection structure in one embodiment of the present application.

[0019] Figure 3 An exploded schematic diagram of a partial structure of a battery cell temperature collection structure in one embodiment of the present application from another perspective.

[0020] Figure 4 for Figure 1 Schematic cross-sectional view of the battery cell temperature collection structure along the IV-IV direction.

[0021] Figure 5 FIG. 1 is a schematic structural diagram of a battery module of the present application in one embodiment.

[0022] Figure 6 for Figure 5 A schematic diagram of the structure of a battery cell of a battery module in one embodiment.

[0023] Figure 7 This is a schematic diagram of the structure of a power battery in one embodiment of the present application.

[0024] Description of main component symbols:

[0025] Power battery 300

[0026] Battery module 301

[0027] Battery box 200

[0028] Battery cell temperature collection structure 100

[0029] Bracket 10

[0030] Mounting slot 11

[0031] Perforation 12

[0032] Positioning column 13

[0033] Elastic member 14

[0034] Conductive member 20

[0035] Positioning hole 21

[0036] Circuit board 30

[0037] Conductive connector 31

[0038] Heat conducting element 40

[0039] First reinforcement member 50

[0040] Temperature sensor 60

[0041] Second reinforcement member 70

[0042] Connector 80

[0043] Battery Cell 90

[0044] Main body 91

[0045] Top cover 92

[0046] Connection part 921

[0047] The following specific implementation methods will further illustrate the present application in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0048] The following description will refer to the accompanying drawings to more fully describe the content of the present application. Shown in the accompanying drawings are exemplary embodiments of the present application. However, the present application can be implemented in many different forms and should not be construed as being limited to the exemplary embodiments set forth herein. These exemplary embodiments are provided to make the present application thorough and complete, and to fully convey the scope of the present application to those skilled in the art. Similar reference numerals represent identical or similar components.

[0049] The terms used herein are only used for the purpose of describing specific exemplary embodiments and are not intended to limit the present application. As used herein, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to also include the plural forms. In addition, when used herein, "including" and / or "comprising" and / or "having", integers, steps, operations, components and / or components, but do not exclude the existence or addition of one or more other features, regions, integers, steps, operations, components and / or groups thereof.

[0050] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by those of ordinary skill in the art to which this application belongs. In addition, unless explicitly defined herein, terms such as those defined in general dictionaries should be interpreted as having a meaning consistent with their meaning in the relevant technology and the content of this application, and will not be interpreted as an idealized or overly formal meaning.

[0051] The specific implementation methods of the present application are further described in detail below with reference to the accompanying drawings.

[0052] like Figures 1 to 4 As shown, this embodiment provides a battery cell temperature collection structure 100 for collecting the temperature of a battery cell 90 .

[0053] The battery cell temperature acquisition structure 100 includes a circuit board 30, a temperature sensor 60, and a heat conductor 40. The circuit board 30 is used to be electrically connected to the battery cell 90 to collect data such as the voltage of the battery cell 90, such as the low-voltage signal of the positive and negative electrodes of the battery cell 90. The temperature sensor 60 is arranged on one side of the circuit board 30, and the temperature sensor 60 is electrically connected to the circuit board 30 so that the temperature signal collected by the temperature sensor 60 is transmitted to other control elements (not shown in the figure) connected to the circuit board 30 signal through the circuit board 30. The heat conductor 40 is arranged on the side of the circuit board 30 away from the temperature sensor 60, and the heat conductor 40 is located on the area of ​​the circuit board 30 where the temperature sensor 60 is installed, and is used to be thermally connected to the battery cell 90 so that the heat generated by the battery cell 90 is transferred to the heat conductor 40. The circuit board 30 is thermally connected to the temperature sensor 60 and the heat conductor 40 to transfer the heat of the battery cell 90 received by the heat conductor 40 to the temperature sensor 60, so as to monitor the temperature of the current battery cell 90 in real time through the temperature sensor 60.

[0054] Thus, in the battery cell temperature acquisition structure 100 of the present application, the temperature sensor 60 is arranged on the side of the circuit board 30 away from the battery cell 90, and the heat conductive member 40 is arranged on the side of the circuit board 30 close to the battery cell 90, and the temperature of the battery cell 90 is collected after the heat conductive member 40 is thermally connected to the battery cell 90, and because the heat conductive member 40 and the temperature sensor 60 are respectively attached to the opposite sides of the same area of ​​the circuit board 30, the temperature of the battery cell 90 received by the heat conductive member 40 can be directly transmitted to the temperature sensor 60 through the circuit board 30, thereby improving the accuracy of the temperature sensor 60 collecting the temperature of the battery cell 90. In addition, the temperature sensor 60 is installed on the circuit board 30 to avoid direct contact between the temperature sensor 60 and the battery cell 90, which may easily damage the temperature sensor 60.

[0055] Please combine again Figures 2 to 4 In one embodiment, the battery core temperature collection structure 100 further includes a bracket 10. The bracket 10 is a substantially rectangular structure, and the bracket 10 is made of an insulating material.

[0056] It can be understood that the bracket 10 can be an injection-molded bracket 10, a vacuum-molded or hot-pressed insulating bracket 10, etc.

[0057] The bracket 10 is disposed on a side of the temperature sensor 60 away from the circuit board 30, and a gap is formed between the circuit board 30 and the bracket 10 for the temperature sensor 60 or other electronic components to be installed between the circuit board 30 and the bracket 10. The circuit board 30 is a circuit board 30 with good flexibility, such as an FPC (Flexible Printed Circuit) circuit board 30 or an FDC (Flexible Die-cutting Circuit) circuit board 30.

[0058] The thickness of the circuit board 30 is 0.08 mm to 0.12 mm. It is understandable that the thickness of the circuit board 30 can be 0.08 mm, 0.09 mm, 0.10 mm, 0.11 mm, 0.12 mm, etc. The circuit board 30 is thin, which facilitates the heat conductor 40 to quickly transfer the heat of the battery cell 90 received to the temperature sensor 60 and avoids heat loss during the transfer process of the circuit board 30.

[0059] The circuit board 30 is connected to the side of the bracket 10 close to the temperature sensor 60, and the circuit board 30 is fixed to the bracket 10 by means of heat riveting or bonding. The temperature sensor 60 is a component that can monitor temperature signals, such as a thermistor or an integrated temperature sensor 60, and the temperature sensor 60 is mounted on the surface of the side of the circuit board 30 close to the bracket 10 by using SMT (Surface Mounted Technology) technology, and is electrically connected to the circuit arranged on the circuit board 30.

[0060] In particular, the number of the circuit boards 30 can be set to two or more, and the two or more circuit boards 30 are all connected to the bracket 10 .

[0061] Please combine again Figures 2 to 4 In one embodiment, the battery core temperature collection structure 100 further includes an elastic member 14 .

[0062] The elastic member 14 is arranged between the bracket 10 and the temperature sensor 60. One side of the elastic member 14 elastically presses against the bracket 10, and the other side of the elastic member 14 elastically presses against the temperature sensor 60, so that the elastic member 14 can provide a buffering or vibration isolation protection for the temperature sensor 60 to avoid damage to the temperature sensor 60 after the bracket 10 and the temperature sensor 60 are directly in contact.

[0063] The elastic member 14 can be foam or the like, and is connected to the bracket 10 by gluing, and the thickness of the elastic member 14 is not less than the distance between the side surface of the temperature sensor 60 away from the circuit board 30 and the side surface of the bracket 10 close to the temperature sensor 60, so that when the circuit board 30 and the bracket 10 are connected, the elastic member 14 is compressed between the temperature sensor 60 and the bracket 10.

[0064] Furthermore, the surface of the bracket 10 on the side close to the temperature sensor 60 may be provided with structures such as grooves or protrusions, and the elastic member 14 may be installed on the structures such as grooves or protrusions, and the thickness of the elastic member 14 may be adaptively adjusted.

[0065] Please combine again Figures 2 to 4 In one embodiment, the battery core temperature collection structure 100 further includes a first reinforcement member 50. The first reinforcement member 50 is disposed between the circuit board 30 and the heat conductive member 40. One side of the first reinforcement member 50 is connected to the circuit board 30 and is thermally connected to the circuit board 30. The other side of the first reinforcement member 50 is connected to the heat conductive member 40, and after contacting the heat conductive member 40, the first reinforcement member 50 and the heat conductive member 40 are thermally connected.

[0066] The first reinforcement member 50 is made of FR4 plate, steel sheet or other high-strength materials. The first reinforcement member 50 is fixed to the circuit board 30 by hot pressing, and is located on the side of the circuit board 30 where the temperature sensor 60 is installed, away from the temperature sensor 60, so as to strengthen the structural strength of the circuit board 30 where the temperature sensor 60 is installed, and prevent the circuit board 30 from being thermally deformed due to the installation of the temperature sensor 60 using SMT technology.

[0067] The outer contour of the first reinforcement 50 exceeds the outer contour of the heat conductive member 40 to ensure that the side surface of the heat conductive member 40 away from the battery cell 90 is completely attached to the first reinforcement 50, thereby improving the heat transfer efficiency between the heat conductive member 40 and the first reinforcement 50.

[0068] In particular, the thickness of the first reinforcement 50 is 0.15 mm to 0.25 mm to ensure that the heat of the battery cell 90 collected by the thermal conductor 40 can be quickly transferred to the circuit board 30 through the first reinforcement 50 and avoid heat loss when transferring on the first reinforcement 50.

[0069] It can be understood that the thickness of the first reinforcement 50 is 0.15 mm, 0.16 mm, 0.17 mm, 0.18 mm, 0.19 mm, 0.20 mm, 0.21 mm, 0.22 mm, 0.23 mm, 0.24 mm, 0.25 mm, etc.

[0070] Furthermore, the heat conductor 40 is methyl vinyl silicone rubber or other materials with excellent thermal conductivity and insulation, and the heat conductor 40 has a certain elasticity. One end of the heat conductor 40 away from the first reinforcement 50 abuts against the temperature collection area of ​​the top cover 92 of the battery cell 90 to receive the heat of the battery cell 90. The top cover 92 of the battery cell 90 is provided with positive and negative poles and a QR code, etc. The temperature collection area is the QR code area of ​​the top cover 92 of the battery cell 90 or other areas that can be covered by non-blue film, and the temperature collection area is not less than the contact area between the heat conductor 40 and the top cover 92 of the battery cell 90 when the two are abutted, so as to ensure that the heat of the battery cell 90 can be transferred to the heat conductor 40 to a greater extent.

[0071] Please combine again Figures 2 to 4 In one embodiment, the battery core temperature collection structure 100 further includes a conductive member 20 .

[0072] The conductive member 20 is made of a conductive material such as aluminum. The conductive member 20 is disposed on a side of the bracket 10 away from the circuit board 30. The conductive member 20 is electrically connected to the circuit board 30, and the conductive member 20 is used to be electrically connected to the battery cell 90, so that the battery cell 90 forms a current loop with the circuit board 30 through the conductive member 20, and the voltage signal of the battery cell 90 can be collected. In addition, the conductive member 20 is fixed to the surface of the side of the bracket 10 away from the circuit board 30 by hot riveting or clamping. The conductive member 20 is spaced apart from the temperature sensor 60 to prevent the conductive member 20 from generating heat itself and affecting the detection result of the temperature sensor 60.

[0073] Specifically, a mounting groove 11 is formed on one side of the bracket 10 close to the conductive member 20 , and the conductive member 20 is received in the mounting groove 11 . A through hole 12 is formed on the bottom wall of the mounting groove 11 , and the circuit board 30 at least partially extends into the through hole 12 and is electrically connected to the conductive member 20 .

[0074] A positioning column 13 is protruded from the bottom wall of the installation slot 11 , and a positioning hole 21 is formed in the conductive member 20 . The positioning column 13 is clamped in the positioning hole 21 to realize the positioning of the conductive member 20 relative to the bracket 10 .

[0075] The circuit board 30 is provided with a conductive connector 31, which is arranged in a step-like structure. The conductive connector 31 is made of a conductive material such as a nickel sheet. The first end of the conductive connector 31 is connected to one side or both sides of the circuit board 30 to prevent the conductive connector 31 from affecting the circuit layout of the circuit board 30. In addition, the first end of the conductive connector 31 is electrically connected to the circuit board 30, and the second end of the conductive connector 31 extends into the through hole 12 to abut against the conductive member 20, so that the conductive connector 31 is electrically connected to the conductive member 20 after contacting the conductive member 20, thereby realizing a current / voltage loop between the battery cell 90, the conductive member 20, the conductive connector 31, and the circuit board 30.

[0076] Furthermore, the positive and negative poles provided on the top cover 92 of the battery cell 90 extend into the through-hole 12 and abut against the conductive member 20, so that the positive and negative poles contact with the conductive member 20 to form a conductive connection, so that the battery cell 90 transmits voltage and other signals to the conductive member 20, and then the conductive member 20 transmits them to the control element through the conductive connecting member 31 and the circuit arranged on the circuit board 30.

[0077] Please combine again Figures 2 to 4 In one embodiment, the battery core temperature collection structure 100 further includes a connector 80 and a second reinforcement member 70. The connector 80 and the temperature sensor 60 are disposed on the same side of the circuit board 30, and the connector 80 is electrically connected to the circuit board 30. The second reinforcement member 70 is disposed on a side of the circuit board 30 away from the connector 80, and the second reinforcement member 70 is located in the area of ​​the circuit board 30 connected to the connector 80.

[0078] The connector 80 is an electronic component such as a low-voltage communication connector 80, which is soldered on the circuit board 30 using SMT technology. The second reinforcement 70 is made of the same material as the first reinforcement 50, and is used to prevent thermal deformation of the area on the circuit board 30 where the connector 80 is connected.

[0079] like Figures 5 and 6 See Figures 2 to 4 The present application also provides a battery module 301, including a battery cell 90 and the battery cell temperature collection structure 100. The battery cell 90 is located on a side of the circuit board 30 away from the bracket 10, the battery cell 90 is thermally connected to the heat conductive member 40, and the battery cell 90 is electrically connected to the conductive member 20.

[0080] Specifically, the battery cell 90 includes a main body 91 and a connecting portion 921. A top cover 92 is provided at the top of the main body 91. The top cover 92 at least partially abuts against a side of the heat conductive member 40 away from the circuit board 30, and after contacting the heat conductive member 40, the top cover 92 is thermally connected to the heat conductive member 40. The connecting portion 921 is protruding from a side of the top cover 92 close to the heat conductive member 40, and the connecting portion 921 abuts against the conductive member 20, and after contacting the conductive member 20, the connecting portion 921 is electrically connected to the conductive member 20.

[0081] It is understandable that there are multiple battery cells 90. The multiple battery cells 90 are arranged in an array, for example, the multiple battery cells 90 are arranged at intervals in the horizontal and vertical directions.

[0082] Correspondingly, the number of heat conducting members 40, first reinforcement members 50, temperature sensors 60, conductive members 20, and conductive connecting members 31 is not less than the number of battery cells 90, and each battery cell 90 has a corresponding heat conducting member 40, first reinforcement member 50, temperature sensor 60, conductive member 20, and conductive connecting member 31 to realize temperature signal acquisition and voltage signal acquisition for each battery cell 90.

[0083] When there are multiple temperature sensors 60, there are multiple elastic members 14, and each of the multiple elastic members 14 protects one temperature sensor 60. Alternatively, there is one elastic member 14, and the extension direction of the elastic member 14 is the same as the arrangement direction of the multiple sensors, so that multiple temperature sensors 60 are protected by one elastic member 14.

[0084] The battery module 301 has the battery core temperature collection structure 100 to collect voltage signals and temperature signals of each battery core 90 in real time, thereby improving the safety of the battery module 301 during operation.

[0085] like Figure 7 As shown, the present application also provides a power battery 300, including a battery box 200 and the above-mentioned battery module 301. The battery box 200 is provided with a cavity, the battery module 301 is accommodated in the cavity, and the cavity can be closed by a plate or the like.

[0086] The power battery 300 has the battery module 301 described above, so as to have the functions of collecting voltage signals and temperature signals of each battery cell 90 in real time, thereby improving the safety of the power battery 300 during operation.

[0087] In the above, the specific embodiments of the present application are described with reference to the accompanying drawings. However, those skilled in the art will appreciate that various changes and substitutions may be made to the specific embodiments of the present application without departing from the scope of the present application. These changes and substitutions are all within the scope defined by the present application.

Claims

1. A battery core temperature collection structure, used to collect the temperature of the battery core; characterized in that: The battery core temperature collection structure comprises: A circuit board, used for being electrically connected to the battery cell; A temperature sensor is disposed on one side of the circuit board, and the temperature sensor is electrically connected to the circuit board; A heat conductor is provided on a side of the circuit board away from the temperature sensor. The heat conductor is located on the area of ​​the circuit board where the temperature sensor is mounted and is used to be thermally connected to the battery cell. The circuit board is thermally connected to the temperature sensor and the heat conductor to transfer the heat of the battery cell received by the heat conductor to the temperature sensor.

2. The battery core temperature collection structure according to claim 1, characterized in that: The battery cell temperature collection structure also includes a first reinforcement member, which is arranged between the circuit board and the heat conductive member, one side of the first reinforcement member is connected to the circuit board and thermally connected to the circuit board, and the other side of the first reinforcement member is connected to the heat conductive member and thermally connected to the heat conductive member.

3. The battery core temperature collection structure according to claim 2, characterized in that: The outer contour of the first reinforcement member exceeds the outer contour of the heat conducting member.

4. The battery core temperature collection structure according to claim 1, characterized in that: The battery core temperature collection structure further includes a bracket, which is arranged on a side of the temperature sensor away from the circuit board, and the circuit board is connected to the bracket.

5. The battery core temperature collection structure according to claim 4, characterized in that: The battery core temperature collection structure also includes an elastic member, which is arranged between the bracket and the temperature sensor, one side of the elastic member elastically abuts against the bracket, and the other side of the elastic member elastically abuts against the temperature sensor.

6. The battery core temperature collection structure according to claim 4, characterized in that: The battery cell temperature collection structure also includes a conductive member, which is disposed on a side of the bracket away from the circuit board, is electrically connected to the circuit board, and is used to be electrically connected to the battery cell.

7. The battery core temperature collection structure according to claim 6, characterized in that: A mounting groove is formed on one side of the bracket close to the conductive member, the conductive member is received in the mounting groove, a through hole is formed on the bottom wall of the mounting groove, the circuit board at least partially extends into the through hole and is electrically connected to the conductive member.

8. The battery core temperature collection structure according to claim 7, characterized in that: The circuit board is provided with a conductive connecting member, a first end of the conductive connecting member is connected to the circuit board and electrically connected to the circuit board, and a second end of the conductive connecting member extends into the through hole to abut against the conductive member and is electrically connected to the conductive member.

9. The battery core temperature collection structure according to claim 1, characterized in that: The battery cell temperature collection structure also includes a connector and a second reinforcement member. The connector and the temperature sensor are arranged on the same side of the circuit board, and the connector is electrically connected to the circuit board. The second reinforcement member is arranged on a side of the circuit board away from the connector, and the second reinforcement member is located in the area of ​​the circuit board connected to the connector.

10. A battery module, characterized in that: It comprises a battery cell and a battery cell temperature collection structure as claimed in any one of claims 1 to 9, wherein the battery cell is located on a side of the circuit board away from the bracket, the battery cell is thermally connected to the heat conductive member, and the battery cell is electrically connected to the conductive member.

11. The battery module according to claim 10, characterized in that: The battery core includes a main body and a connecting part, wherein the main body abuts against a side of the heat conductive member away from the circuit board and is thermally connected to the heat conductive member, and the connecting part is protruding from a side of the main body close to the heat conductive member, the connecting part abuts against the conductive member, and is electrically connected to the conductive member.

12. A power battery, characterized in that: It comprises a battery box and the battery module as claimed in claim 10, wherein the battery module is installed in the battery box.

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