Integrated busbar assembly, temperature measurement method and battery module

Abstract

Provided in the present application are an integrated busbar assembly, a temperature measurement method and a battery module. The integrated busbar assembly comprises: a circuit board; a temperature sensor arranged on the circuit board, the temperature sensor having a temperature measurement surface; and a conductor arranged on the circuit board and protruding out of the temperature measurement surface, the conductor being configured to be in contact with a temperature measurement part of a battery module when the temperature measurement surface is close to the temperature measurement part.

Description

Integrated busbar assembly, temperature detection method and battery module

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on August 31, 2023, with application number 202311125261.1. The entire contents of the above application are incorporated by reference into this application. Technical Field

[0002] The present application relates to the technical field of energy storage equipment, and in particular to an integrated busbar assembly, a temperature detection method, and a battery module. Background Art

[0003] In related technologies, the temperature sensor of the battery module is arranged close to the surface of the aluminum bar or the battery cell pole. In order to ensure that the temperature collected by the temperature sensor is closer to the surface temperature of the aluminum bar or the battery cell pole, the following structure is often used: 1. A plastic bracket structure is added on the opposite side of the temperature sensor and the aluminum bar to provide holding force; 2. The temperature sensor is directly bonded to the surface of the aluminum bar or the pole with structural adhesive. SUMMARY OF THE INVENTION

[0004] However, during the use of the entire PACK battery system, it is impossible to know whether the temperature sensor is close to the surface to be detected. Therefore, it is difficult to determine whether the temperature signal collected by the temperature sensor can truly reflect the temperature of the surface to be detected.

[0005] The present application provides an integrated busbar assembly. The integrated busbar assembly is configured to monitor battery modules and includes: a circuit board configured to be connected to a control board; a temperature sensor disposed on the circuit board; the temperature sensor having a temperature detection surface; the temperature sensor transmitting a collected temperature signal to the control board via the circuit board; and a conductor disposed on the circuit board and protruding from the temperature detection surface; the conductor being configured to contact a temperature detection portion on the battery module when the temperature detection surface is close to a surface to be detected of the battery module to generate an electrical signal; the electrical signal being transmitted to the control board via the circuit board.

[0006] The present application also provides a temperature detection method for the integrated busbar assembly as described above, comprising the following steps: obtaining a temperature signal from the temperature sensor; detecting whether an electrical signal exists on the conductor; and if so, determining that the temperature detection value corresponding to the temperature signal is the temperature value of the battery module.

[0007] The present application also provides a battery module, comprising: a plurality of battery cells, each of which includes a temperature detection part; and an integrated busbar assembly as described above; wherein the temperature detection surface of the temperature sensor is close to the temperature detection part of at least one of the plurality of battery cells, and the conductor contacts the temperature detection part of the battery cell to which the temperature sensor is close. Beneficial effects

[0008] The integrated busbar assembly provided by the present application is provided by setting a conductor on a circuit board; the conductor protrudes from the temperature detection surface of the temperature sensor; when assembling the battery module to collect the temperature of the battery module, the conductor preferentially contacts the temperature detection part, and at this time the temperature detection surface is close to the temperature detection part. When the conductor contacts the temperature detection part, an electrical signal is generated. If the control board detects the electrical signal, it determines that the temperature detection value corresponding to the temperature signal is the temperature value of the battery module. However, due to the influence of assembly factors and the influence during use, the conductor may be separated from the temperature detection part, and the temperature detection surface is far away from the temperature detection part; after the conductor is separated from the temperature detection part, the electrical signal disappears, and the control board cannot detect the electrical signal, then the probability that the temperature detection value corresponding to the temperature signal deviates from the temperature value of the battery module increases. Therefore, the present application can effectively judge the authenticity of the temperature detection value, thereby improving the reliability of the battery pipeline system and improving the safety of the battery module.

[0009] The temperature detection method provided in this application determines whether a temperature detection surface is close to the surface to be detected by detecting whether an electrical signal is present on a conductive body, thereby determining whether the temperature detection value corresponding to the temperature signal is the temperature value of the battery module. This method can effectively improve the reliability of the temperature detection value of the battery module. When an electrical signal is present, the temperature detection surface is close to the surface to be detected of the battery module, and the temperature detection value corresponding to the temperature signal is determined to be the temperature value of the battery module.

[0010] The battery module provided in the present application determines whether the temperature detection value corresponding to the temperature signal measured by the temperature sensor is true by detecting the electrical signal of the conductor, thereby improving the reliability of temperature detection and helping to improve the safety of the battery module. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] FIG1 is a schematic structural diagram of an integrated busbar assembly provided by the present application;

[0012] FIG2 is a schematic diagram of the AA section in FIG1 ;

[0013] FIG3 is a partial enlarged view of point B in FIG2 ;

[0014] FIG4 is a schematic diagram showing the principle of the auxiliary judgment circuit composed of conductors in this application;

[0015] FIG5 is a schematic flow chart of the temperature detection method of the present application;

[0016] FIG6 is a schematic structural diagram of the battery module of the present application;

[0017] FIG7 is a partial enlarged view of point C in FIG6 .

[0018] Description of reference numerals:

[0019] 10 battery cell 141 first-end conductor 20 temperature detection unit 142 terminal conductor 21 bar 150 module connector 22 pole 160 voltage acquisition chip 110 circuit board 111 first temperature acquisition circuit 120 control board 112 second temperature acquisition circuit 130 temperature sensor 113 pressure acquisition circuit 131 temperature detection surface 114 auxiliary circuit 132 first-end temperature sensor 151 first wiring harness 133 terminal temperature sensor 152 internal wiring harness 140 conductor 153 second wiring harness Modes for Carrying Out the Invention

[0020] In the description of this application, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and can refer to internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0021] In this application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature includes the first feature being directly above and obliquely above the second feature, with the first feature having a higher horizontal height than the second feature. A first feature being "below," "below," and "below" a second feature includes the first feature being directly below and obliquely below the second feature, with the first feature having a lower horizontal height than the second feature.

[0022] In the description of this embodiment, terms such as "upper," "lower," "left," "right," "front," and "rear" are used to refer to positions or locations based on the positions or locations shown in the accompanying drawings. These terms are intended to facilitate description and simplify operation, and are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and do not have any special meanings.

[0023] With the rapid development of new energy vehicles, battery management systems, as their core, have also flourished. The Cell Contact System (CCS) is a crucial component for collecting internal battery module status parameters. Temperature parameters are a key parameter that requires monitoring within the battery module. In related technologies, after the temperature sensor is assembled into the battery module, it is difficult to determine whether the temperature sensor is in close proximity to the surface of the object being measured, due to factors such as assembly accuracy and operational influences. Consequently, it is difficult to determine the authenticity of the internal temperature of the battery module.

[0024] An embodiment of the present application provides an integrated busbar assembly configured to monitor a battery module. A conductor 140 is provided on the integrated busbar assembly, and an electrical signal is generated when the conductor 140 contacts a temperature detection unit 20 on a battery module. Based on this electrical signal, a control board 120 on the battery module can determine that the temperature monitoring value corresponding to the temperature signal collected by the temperature sensor 130 is the temperature value of the battery module.

[0025] Specifically, referring to Figures 1 to 4, the integrated busbar assembly includes:

[0026] The circuit board 110 is configured to connect to the control board 120 of the battery module;

[0027] The temperature sensor 130 is disposed on the circuit board 110 ; the temperature sensor 130 has a temperature detection surface 131 ; the temperature signal collected by the temperature sensor 130 is uploaded to the control board 120 via the circuit board 110 ;

[0028] The conductor 140 is arranged on the circuit board 110 and protrudes from the temperature detection surface 131; the conductor 140 is configured to contact the temperature detection part 20 when the temperature detection surface 131 is close to the surface to be detected of the battery module to generate an electrical signal; the electrical signal is uploaded to the control board 120 through the circuit board 110.

[0029] In the technical solution of the embodiment of the present application, a conductor 140 is disposed on the circuit board 110; the conductor 140 protrudes from the temperature sensing surface 131 of the temperature sensor 130. When the battery module is assembled to collect the battery module temperature, the conductor 140 preferentially contacts the temperature sensing portion 20, with the temperature sensing surface 131 approaching the temperature sensing portion 20. Upon contacting the temperature sensing portion 20, the conductor 140 generates an electrical signal. If the control board 120 detects the electrical signal, it determines that the temperature value corresponding to the temperature signal is the battery module temperature. However, due to assembly factors and effects during use, the conductor 140 may become detached from the temperature sensing portion 20, with the temperature sensing surface 131 moving away from the temperature sensing portion 20. Once the conductor 140 is detached from the temperature sensing portion 20, the electrical signal disappears, and the control board 120 cannot detect the electrical signal, increasing the probability that the temperature value corresponding to the temperature signal deviates from the battery module temperature. Therefore, the embodiment of the present application can effectively determine the authenticity of the temperature sensing value, thereby improving the reliability of the battery circuit system and enhancing the safety of the battery module.

[0030] In an embodiment, the temperature sensor 130 and the conductor 140 are used in pairs: that is, the temperature sensor 130 collects the temperature of one of the battery cells 10 of the battery module, and the conductor 140 is arranged to contact the temperature detection portion 20 of the battery cell 10 .

[0031] In a specific application, the surface to be detected that the temperature detection surface 131 is close to is the surface of the battery cell 10, or it can be the surface of the tab 21. The implementer can make a specific choice.

[0032] In some embodiments, the temperature sensing unit 20 that the conductor 140 contacts can be connected to the input (or output) of the control board 120 via a wiring harness. The conductor 140 is then connected to the output (or input) of the control board 120 via the circuit board 110. When the conductor 140 contacts the temperature sensing unit 20, an electrical circuit is formed, allowing the control board 120 to detect the electrical signal. When the conductor 140 separates from the temperature sensing unit 20, the circuit is broken, and the control board 120 cannot detect the electrical signal.

[0033] In some other embodiments, the conductor 140 forms a circuit connected to the control board 120 by utilizing a portion of the temperature acquisition circuit. As shown in FIG4 , the circuit board 110 is provided with a first temperature acquisition circuit 111 and a second temperature acquisition circuit 112. The first temperature acquisition circuit 111 is connected to the positive terminal of the temperature sensor 130, and the second temperature acquisition circuit 112 is connected to the negative terminal of the temperature sensor 130. The temperature signal collected by the temperature sensor 130 is transmitted to the control board 120 via the first temperature acquisition circuit 111 and the second temperature acquisition circuit 112. In some embodiments, the conductor 140 is provided on either the first temperature acquisition circuit 111 or the second temperature acquisition circuit 112. In other words, the circuit for transmitting the electrical signal of the conductor 140 utilizes either the first temperature acquisition circuit 111 or the second temperature acquisition circuit 112, which can reduce the number of manufacturing steps for the circuit board 110.

[0034] In a specific implementation, the conductor 140 can be a tin block formed by tinning the end of the first temperature acquisition circuit 111 or the second temperature acquisition circuit 112, with the tin block extending beyond the temperature detection plane. For example, as shown in FIG4 , the conductor 140 can be a tin block formed by tinning the end of the second temperature acquisition circuit 112. Alternatively, the conductor 140 can be tinned to form a tin block at the end of the first temperature acquisition circuit 111. In some embodiments, the conductor 140 can be made of a conductive metal other than tin, such as copper or aluminum.

[0035] In some embodiments, one of the first temperature acquisition circuit 111 and the second temperature acquisition circuit 112 is connected to the input (or output) of the control board 120, while the other is connected to the temperature acquisition port of the control board 120. The temperature detection unit 20, which the conductor 140 contacts, can be connected to the output (or input) of the control board 120 via a wiring harness.

[0036] In other embodiments, the conductor 140 forms a circuit connected to the control board 120 via a portion of the temperature acquisition circuit and a portion of the pressure sampling circuit 113. The pressure sampling circuit 113 is a circuit on the circuit board 110 that transmits the voltage collected by the integrated busbar assembly to the control board 120. As an alternative to the above embodiment, the integrated busbar assembly further includes a voltage acquisition chip 160 disposed on the circuit board 110; the circuit board 110 also includes a pressure sampling circuit 113 connected to the voltage acquisition chip 160. The voltage acquisition chip 160 is configured to contact the temperature detection unit 20. In specific embodiments, when the voltage acquisition chip 160 contacts the temperature detection unit 20, if the conductor 140 also contacts the temperature detection unit 20, the conductor 140 is electrically connected to the voltage acquisition chip 160 through the temperature detection unit 20, thereby conducting electrical current between the conductor 140 and the pressure sampling circuit 113, generating an electrical signal. That is, the circuit between the conductor 140 and the control board 120 includes a portion of the temperature acquisition circuit and a portion of the pressure acquisition circuit 113; through this setting, the process steps of the circuit board 110 can be reduced, and the wiring harness can be reduced, which is conducive to reducing costs.

[0037] In a specific application process, the battery module usually includes a plurality of battery cells 10, and for this purpose, at least two temperature sensors 130 are provided; correspondingly, at least two conductors 140 are also provided. There are at least two conductors 140, and the temperature sensors 130 are provided in a one-to-one correspondence with the conductors 140. After the integrated busbar assembly is assembled into a battery module, the temperature sensors 130 and the conductors 140 are provided in a one-to-one correspondence: the temperature sensor 130 performs temperature detection on one of the battery cells 10, and the corresponding conductor 140 is configured to contact the battery cell 10. In an ideal working state and an ideal assembly state, the conductor 140 is in contact with the temperature detection portion 20 of the battery cell 10 detected by its corresponding temperature sensor 130.

[0038] In an embodiment, the integrated busbar assembly further includes a module connector 150; and at least one auxiliary circuit 114 is further provided on the circuit board 110. Between two adjacent conductors 140, one of the conductors 140 is connected to the auxiliary circuit 114 through its corresponding temperature sensor 130, and the auxiliary circuit 114 is connected to the pressure sampling circuit 113 corresponding to the other conductor 140 through the module connector 150. In an embodiment, the conductors 140 are connected in series through the pressure sampling circuit 113 and the module connector 150. In this embodiment, when one of the conductors 140 loses contact with the corresponding temperature detection part 20, the control board 120 cannot detect the electrical signal. With such a configuration, the control board 120 can effectively determine whether all the temperature sensors 130 are effectively close to the surface to be detected, while saving the number of external wiring harnesses.

[0039] In other embodiments, each conductor 140 can also be connected to the control board 120 via its corresponding pressure sampling circuit 113. Compared to the above embodiment, when one conductor 140 is out of contact with the temperature detection unit 20, the control board 120 can detect the electrical signals of the other conductors 140; and in this structure, additional interfaces of the control board 120 and an external wiring harness are required.

[0040] As an optional implementation of the above embodiment, the temperature sensor 130 includes a first-end temperature sensor 132 and a terminal temperature sensor 133, and the conductor 140 includes a first-end conductor 141 and a terminal conductor 142. The first-end temperature sensor 132 is arranged corresponding to the first-end conductor 141, and the terminal temperature sensor 133 is arranged corresponding to the terminal conductor 142. In a specific embodiment, the temperature detection surface 131 of the first-end temperature sensor 132 is close to the surface to be detected of the first battery cell 10, and the first-end conductor 141 is configured to contact the temperature detection part 20 of the first battery cell 10. The temperature detection surface 131 of the terminal temperature sensor 133 is close to the surface to be detected of the second battery cell 10, and the terminal conductor 142 is configured to contact the temperature detection part 20 of the second battery cell 10. The head-end temperature sensor 132 is connected to the output interface of the control board 120 via the first temperature acquisition circuit 111 and the module connector 150. The terminal conductor 142 is connected to the input interface of the control board 120 via its corresponding pressure acquisition circuit 113 and the module connector 150. With this arrangement, the head end or the terminal end of the circuit through which the electrical signal of the conductor 140 is transmitted is connected to the output interface and the input interface of the control board 120, respectively, which can reduce the number of interfaces on the control board 120.

[0041] As an alternative embodiment to the above embodiment, as shown in Figure 4 , the integrated busbar assembly further includes a first wiring harness 151 and a second wiring harness 152. The modular connector 150 includes an internal wiring harness 153. The first wiring harness 151 is connected to the second wiring harness 152 via the internal wiring harness 153; the pressure sampling circuit 113 is connected to the first wiring harness 151; and the auxiliary circuit 114 is connected to the second wiring harness 152. That is, in this embodiment, the circuit that transmits electrical signals from the conductor 140 includes the first wiring harness 151, the second wiring harness 152, and the internal wiring harness 153 in a portion located outside the circuit board 110.

[0042] As shown in Figure 4, the temperature sensor includes a head-end temperature sensor 132, a terminal temperature sensor 133, and an intermediate temperature sensor. The head-end temperature sensor 132 is connected to the output port of the control board 120 via a first temperature acquisition circuit 111 and a module connector 150. The head-end conductor 141 corresponding to the head-end temperature sensor 132 is arranged on the second temperature acquisition circuit 112 of the head-end temperature sensor 132. The circuit board 110 is also provided with a head-end voltage acquisition chip configured to detect the battery cell 10 corresponding to the head-end temperature sensor 132, and a pressure acquisition circuit 113 corresponding to the head-end voltage acquisition chip. The pressure acquisition circuit 113 corresponding to the head-end voltage acquisition chip is connected to the first temperature acquisition circuit 111 of the intermediate temperature sensor via a corresponding first wiring harness 151, an internal wiring harness 153, a second wiring harness 152, and an auxiliary circuit 114. The intermediate conductor corresponding to the intermediate temperature sensor is arranged on the second temperature acquisition circuit 112 of the intermediate temperature sensor. The circuit board 110 is also equipped with an intermediate voltage acquisition chip configured to detect the battery cell 10 corresponding to the intermediate temperature sensor, as well as a corresponding pressure sampling circuit 113 for the intermediate voltage acquisition chip. The corresponding pressure sampling circuit 113 for the intermediate voltage acquisition chip is connected to the first temperature acquisition circuit 111 of the terminal temperature sensor 133 via the corresponding first wiring harness 151, internal wiring harness 153, second wiring harness 152, and auxiliary circuit 114. The terminal conductor 142 corresponding to the terminal temperature sensor 133 is provided on the second temperature acquisition circuit 112 of the terminal temperature sensor 133. The circuit board 110 is also equipped with a terminal voltage acquisition chip configured to detect the battery cell 10 corresponding to the terminal temperature sensor 133, as well as a corresponding pressure sampling circuit 113 for the terminal voltage acquisition chip. The corresponding pressure sampling circuit 113 for the terminal voltage acquisition chip is connected to the input port of the control board 120 via the module connector 150.

[0043] In this embodiment, when the first-end conductor 141, the middle conductor and the terminal conductor 142 simultaneously contact the temperature detection part 20 of the corresponding battery cell 10, it is configured to assist in determining whether the temperature detection circuit is conductive, and the control board 120 can detect the electrical signal.

[0044] In the above embodiment, as shown in FIG3 , the distance that the conductor 140 protrudes from the temperature detection surface 131 is H, and the value range of H is 0 < H ≤ 0.5 mm. In this embodiment, the distance that the conductor 140 protrudes from the temperature detection surface 131 should not be too large, and is limited to within 0.5 mm to ensure that an effective distance is maintained between the temperature detection surface 131 and the surface to be detected. Typically, the value range of H is 0.3 mm ≤ H ≤ 0.5 mm.

[0045] As an alternative to the above embodiment, the temperature sensor 130 is packaged on the circuit board 110. In the embodiment, the temperature sensor 130 is packaged in an SMT format and is disposed at the end of the temperature acquisition circuit of the circuit board 110. The temperature sensor 130 has an NTC thermistor.

[0046] The present application also provides a temperature detection method for the integrated busbar assembly as described above, as shown in FIG5 , including the following steps:

[0047] S100, obtaining a temperature signal from the temperature sensor 130;

[0048] S200, detecting whether there is an electrical signal on the conductor 140;

[0049] S300: If yes, determine that the temperature detection value corresponding to the temperature signal is the temperature value of the battery module.

[0050] In the temperature detection method provided in the embodiment of the present application, by detecting whether the electrical signal is present on the conductor 140, it is determined whether the temperature detection surface 131 is close to the surface to be detected, and then whether the temperature detection value corresponding to the temperature signal is the temperature value of the battery module is determined, which can effectively improve the reliability of the battery module temperature detection value. When the electrical signal is present, the temperature detection surface 131 is close to the surface to be detected of the battery module, and then the temperature detection value corresponding to the temperature signal is determined to be the temperature value of the battery module.

[0051] In one embodiment, as shown in FIG5 , step S100 may be performed before step S200. In some embodiments, step S100 may also be performed after step S200. In some embodiments, step S100 and step S200 may also be performed simultaneously.

[0052] When there is no electrical signal, the temperature detection surface 131 is away from the surface to be detected of the battery module, and it is determined that the temperature detection value corresponding to the temperature signal may be different from the actual temperature value of the battery module. At this time, it can be marked during display to indicate that there is a deviation in the temperature detection value.

[0053] An embodiment of the present application provides a battery module, as shown in Figures 6 and 7, comprising: a plurality of battery cells 10, each including a temperature detection unit 20; and an integrated busbar assembly. In the embodiment, the integrated busbar assembly adopts some or all of the technical solutions of the aforementioned embodiment, and thus possesses some or all of the technical advantages of the aforementioned embodiment. The temperature detection surface 131 of the temperature sensor 130 is adjacent to the temperature detection unit 20 of at least one of the plurality of battery cells 10, and the conductor 140 contacts the temperature detection unit 20 of the battery cell 10 to which the temperature sensor 130 is adjacent.

[0054] In the battery module, by detecting the electrical signal of the conductor 140 , it is determined whether the temperature detection value corresponding to the temperature signal measured by the temperature sensor 130 is true, thereby improving the reliability of temperature detection and facilitating the improvement of the safety of the battery module.

[0055] As an optional implementation of the above embodiment, the battery module further includes thermally conductive adhesive, the temperature sensing portion 20 includes a post 22 or a tab 21, and the temperature sensing surface 131 is connected to the post 22 or the tab 21 via the thermally conductive adhesive. In this embodiment, the thermally conductive adhesive is used to securely connect the temperature sensing surface 131 to the tab 21 or the post 22, allowing temperature detection to be performed by heat conduction.

Claims

1. An integrated busbar assembly configured to monitor a battery module, wherein the battery module includes a control board, and the integrated busbar assembly includes: A circuit board configured to be connected to the control board; A temperature sensor is disposed on the circuit board; The temperature sensor has a temperature detection surface; the temperature sensor transmits the collected temperature signal to the control board through the circuit board; The conductor is arranged on the circuit board and protrudes from the temperature detection surface; the conductor is configured to contact the temperature detection part [1] on the battery module when the temperature detection surface is close to the surface to be detected of the battery module to generate an electrical signal.

2. The integrated busbar assembly according to claim 1, wherein: The circuit board is provided with a first temperature acquisition circuit and a second temperature acquisition circuit; the first temperature acquisition circuit is connected to the positive electrode of the temperature sensor, and the second temperature acquisition circuit is connected to the negative electrode of the temperature sensor; The conductor is disposed on any one of the first temperature acquisition loop and the second temperature acquisition loop.

3. The integrated busbar assembly according to claim 2, further comprising a voltage collection sheet, wherein the voltage collection sheet is disposed on the circuit board; and a voltage collection circuit connected to the voltage collection sheet is also disposed on the circuit board; The voltage collection sheet is configured to contact the temperature detection part, so that the conductor is electrically connected to the voltage collection circuit through the voltage collection sheet when in contact with the temperature detection part.

4. The integrated busbar assembly according to claim 3, wherein: There are at least two temperature sensors and at least two conductors, and the temperature sensors and the conductors are arranged in a one-to-one correspondence; The integrated busbar assembly also includes a module connector; the circuit board is also provided with at least one auxiliary circuit; Between two adjacent conductors, one of the conductors is connected to the auxiliary circuit via its corresponding temperature sensor, and the auxiliary circuit is connected to the pressure sampling circuit corresponding to the other conductor via the module connector.

5. The integrated busbar assembly according to claim 4, wherein: The temperature sensor includes a head-end temperature sensor and a terminal temperature sensor, and the conductor includes a head-end conductor and a terminal conductor; the head-end temperature sensor is arranged corresponding to the head-end conductor, and the terminal temperature sensor is arranged corresponding to the terminal conductor; Among them, the head-end temperature sensor is connected to the output interface of the control board through the first temperature acquisition circuit and the module connector, and the terminal conductor is connected to the input interface of the control board through its corresponding pressure acquisition circuit and the module connector.

6. The integrated busbar assembly according to claim 4 or 5, wherein the integrated busbar assembly further comprises a first wiring harness and a second wiring harness; the module connector comprises an internal wiring harness; The first wiring harness is connected to the second wiring harness through the internal wiring harness; the pressure sampling circuit is connected to the first wiring harness; and the auxiliary circuit is connected to the second wiring harness.

7. The integrated busbar assembly according to any one of claims 1 to 6, wherein: The distance that the conductor protrudes from the temperature detection surface is H, and the value range of H is 0<H≤0.5mm.

8. A temperature detection method, used in the integrated busbar assembly according to any one of claims 1 to 7, comprising the following steps: Acquiring a temperature signal from the temperature sensor; Detecting whether there is an electrical signal on the conductor; If so, the temperature detection value corresponding to the temperature signal is determined to be the temperature value of the battery module.

9. A battery module, comprising: A plurality of battery cells, each of which comprises a temperature detection unit; as well as An integrated busbar assembly as claimed in any one of claims 1 to 7; wherein the temperature sensing surface of the temperature sensor is close to the temperature sensing portion of at least one of the plurality of battery cells, and the conductor contacts the temperature sensing portion of the battery cell to which the temperature sensor is close.

10. The battery module according to claim 9, further comprising thermally conductive adhesive, the temperature detection portion comprising a pole or a tab, and the temperature detection surface is connected to the pole or the tab via the thermally conductive adhesive.

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