Signal acquisition assembly and battery module

Abstract

The application relates to the field of power batteries, in particular to a signal acquisition assembly and a battery module. The signal acquisition assembly comprises a sampling branch, a conductive row and a sampling main line; the sampling branch comprises a sampling plate, the sampling plate comprises a main line circuit board, a first branch circuit board and a second branch circuit board; the first branch circuit board and the second branch circuit board are connected to the main line circuit board at the end far from the sampling main line along the length direction of the sampling plate; a connecting piece is slidably installed on the conductive row along the length direction of the sampling plate, so that the first branch circuit board is in thermal connection with the conductive row to collect a first signal, and the second branch circuit board is in electric connection with the conductive row to collect a second signal. The temperature sampling line and the voltage sampling line are integrated, the installation process of the signal acquisition assembly is simplified, the installation efficiency is improved, the length of the sampling branch can be accurately controlled, and the arc-shaped lifting phenomenon is optimized.

Description

Technical Field

[0001] This application relates to the field of power batteries, and in particular to a signal acquisition component and a battery module. Background Technology

[0002] In battery modules, the battery management system typically collects battery voltage and temperature signals through an integrated busbar (CCS) to monitor the battery's safe operating status. Temperature signals are usually collected using a thermistor (NTC) attached to the cell top cover or the busbar for real-time temperature monitoring. Voltage signals are collected via a nickel strip laser-welded to the busbar.

[0003] (1) When the battery module is charging and discharging, the temperature of the conductive busbar will be high and it will expand to a certain extent due to the large overcurrent. This will reduce the bonding performance between the conductive busbar and the thermistor, and the reliability of the connection between the thermistor and the conductive busbar will deteriorate, resulting in inaccurate temperature acquisition by the thermistor.

[0004] (2) When the thermistor is bonded to the busbar, in order to reduce operational errors, the length of the sampling circuit board on which the thermistor is mounted needs to have a certain redundancy so that it can be bonded to the conductive element. This results in the sampling circuit board being bent and tilted, occupying part of the Z-axis space (vertical direction) inside the box. In addition, since there is no positioning structure during bonding, the bonding position of the thermistor is different, which increases the error of temperature monitoring.

[0005] (3) The battery cell expands in volume during charging and discharging, resulting in a large expansion displacement. This causes stress at the connection between the sampling circuit board and the battery cell, causing the sampling circuit board to fall off and making it impossible to collect signals. Utility Model Content

[0006] The purpose of this application is to provide a signal acquisition component and a battery module to solve the problem of curved and warped sampling circuit boards.

[0007] This application provides a signal acquisition component, including a sampling branch, a busbar, and a sampling main line;

[0008] The sampling branches include:

[0009] A sampling board, comprising a main circuit board, a first branch circuit board, and a second branch circuit board; the main circuit board is used to connect to the sampling main line, and the first branch circuit board and the second branch circuit board are connected along the length of the sampling board to the end of the main circuit board away from the sampling main line;

[0010] A connector is slidably mounted on the conductive busbar along the length of the sampling plate, so that the first branch circuit board is thermally connected to the conductive busbar to acquire a first signal; and the second branch circuit board is electrically connected to the conductive busbar to acquire a second signal.

[0011] In the above technical solution, one of the first branch circuit board and the second branch circuit board is connected to the upper surface of the conductive busbar, and the other is connected to the lower surface of the conductive busbar.

[0012] In the above technical solution, the connector is further provided with a receiving cavity, and a first socket is provided on the side of the receiving cavity near the sampling plate. The first branch circuit board and the second branch circuit board are inserted into the receiving cavity from the first socket.

[0013] The conductive bus includes a plug-in portion; a second socket is provided on the other side of the receiving cavity, which is in communication with the first socket, and the plug-in portion is inserted into the receiving cavity through the second socket to connect the first branch circuit board and the second branch circuit board; wherein the first branch circuit board and the second branch circuit board are connected to the upper and lower ends of the plug-in portion.

[0014] In the above technical solution, the connector is further provided with a slot; the conductive busbar also includes a first sliding part, which is slidably mounted in the slot.

[0015] The groove wall of the card slot is provided with positioning protrusions to apply pressure to position the first sliding part.

[0016] In the above technical solution, the conductive busbar further includes a main body; the first sliding part is spaced apart on both sides of the insertion part and is connected to the main body to form a sliding groove;

[0017] The opening of the sliding groove faces the sampling plate, the dimension of the sliding groove along the length of the sampling plate is larger than the dimension of the connector along the length of the sampling plate, and the bottom of the sliding groove is used to limit the sliding range of the connector.

[0018] In the above technical solution, a positioning boss is further provided on the side of the receiving cavity near the second branch circuit board to apply pressure to the second branch circuit board.

[0019] In the above technical solution, the first branch circuit board and the second branch circuit board are connected sequentially in the width direction of the main circuit board, and an arc-shaped gap is formed between the first branch circuit board and the second branch circuit board. The projections of the first branch circuit board and the second branch circuit board in the thickness direction of the main circuit board overlap at the ends of the first branch circuit board and the second branch circuit board that are away from the main circuit board.

[0020] In this configuration, at least one of the first branch circuit board and the second branch circuit board connected to one end of the main circuit board is bent, such that the first branch circuit board and the second branch circuit board are spaced apart along the thickness direction of the main circuit board.

[0021] In the above technical solution, further, on a plane parallel to the surface of the main circuit board, the first branch circuit board has a tortuous first extension path, and the second branch circuit board has a tortuous second extension path, with the extension directions of the first extension path and the second extension path being arranged opposite to each other.

[0022] In the above technical solution, the first extension path of the first branch circuit board protrudes from the main circuit board in the width direction;

[0023] And / or, the second extension path of the second branch circuit board protrudes from the main circuit board in the width direction.

[0024] This application also provides a battery module, including the signal acquisition component described in the above solution.

[0025] Compared with the prior art, the beneficial effects of this application are as follows:

[0026] The signal acquisition component provided in this application integrates the temperature sampling line and the voltage sampling line into one unit. By setting the connector, the temperature monitoring point and voltage monitoring point of the sampling board can be simultaneously positioned on the busbar, which simplifies the installation process of the signal acquisition component and improves the installation efficiency. In addition, the connector is slidably installed on the busbar, which can accurately control the length of the sampling branch and optimize the phenomenon of bending and arc-shaped lifting.

[0027] This application also provides a battery module, including the signal acquisition component described in the above solution. Based on the above analysis, it is clear that the battery module also possesses the aforementioned beneficial effects, which will not be elaborated upon further here. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the structure of the signal acquisition component provided in this application;

[0030] Figure 2 A partial structural diagram of the signal acquisition component provided in this application;

[0031] Figure 3 A schematic diagram of the assembly structure of the sampling branch and the conductive bus provided in this application;

[0032] Figure 4 A schematic diagram of the assembly structure of the sampling branch and the conductive bus provided in this application from another angle;

[0033] Figure 5 A schematic diagram of the structure of the connector provided in this application;

[0034] Figure 6 This is a structural schematic diagram of the connector provided in this application from another angle.

[0035] In the diagram: 101-Sampling branch; 102-Conductive busbar; 103-Sampling board; 104-Connector; 105-Main circuit board; 106-First branch circuit board; 107-Second branch circuit board; 108-Sampling main line; 109-First socket; 110-Plug-in part; 111-Second socket; 112-Slot; 113-First sliding part; 114-Positioning protrusion; 115-Main body; 116-Sliding groove; 117-Second sliding part; 118-Positioning boss; 119-Temperature sensor; 120-Injection port; 121-Sealant. Detailed Implementation

[0036] The technical solutions of this application will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0037] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0038] In the description of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0039] The signal acquisition component is an important part of the battery pack, such as Figure 1 As shown, it mainly includes pierced crimp terminals, conductive busbars, blister packs, flexible flat cables (FFC) and their surface heat-pressed PI film, and sampling branches, used to realize high-voltage series and parallel connection of battery cells, as well as battery temperature sampling and cell voltage sampling functions. It provides temperature and voltage information to the battery management system (BMS) through the FFC and pierced crimp terminals.

[0040] The working principle of a piercing crimp terminal is that it is an electrical connection device that pierces the cable insulation layer and forms a crimp connection with the conductor. It does not require pre-stripping the FFC insulation layer; simply insert the FFC into the appropriate position of the terminal, and then use a special crimping tool to crimp the terminal to achieve the connection between the FFC and the terminal.

[0041] The vacuum-formed bracket is made of flame-retardant PC film, and after cutting and inspection, it is integrated with FFC, conductive busbars, etc. through a hot riveting process to form a whole, which plays a supporting and insulating role.

[0042] Conductive busbars, typically made of aluminum sheets, serve as connectors between individual battery cells, enabling series / parallel connection of the cells. The thickness of the conductive busbar generally ranges from 1.0mm to 2.0mm; 1.0mm is sufficient for small batteries, while 1.2 / 1.5mm is common, and 2mm can be used for applications requiring high current.

[0043] Flexible flat cable (FFC) is a data cable made of extremely thin tin-plated flat copper wires pressed together by automated production lines. It has the advantages of being flexible, easy to bend and fold, thin, small in size, easy to connect and easy to disassemble.

[0044] PI film, also known as polyimide film, is a yellow, semi-transparent film with excellent high and low temperature resistance, electrical insulation, adhesion, radiation resistance, and dielectric resistance. It can be used for extended periods within a temperature range of -269℃ to 280℃ (encapsulating the surface of FFC to provide anti-oxidation and structural protection).

[0045] In this application, the sampling branch integrates the temperature sampling branch circuit board and the voltage sampling branch circuit board into one unit, which facilitates installation and signal monitoring.

[0046] Example 1

[0047] See Figures 1 to 6 As shown, the signal acquisition component provided in this application includes a sampling branch 101, a busbar 102, and a sampling main line 108.

[0048] The sampling main line 108 includes a pierced crimp terminal, a PI film, a conductive busbar 102, a vacuum-formed bracket, and a flexible flat cable. It is used to achieve high-voltage series and parallel connection of the battery cells, as well as battery temperature and cell voltage sampling functions. Through the flexible flat cable, the pierced crimp terminal, and the sampling branch 101, it transmits real-time voltage and temperature information of each cell in the battery module assembly to the battery management system for monitoring vehicle operating status.

[0049] Sampling branch 101 includes a sampling board 103, which includes a main circuit board 105, a first branch circuit board 106, and a second branch circuit board 107. The main circuit board 105 is used to connect to the sampling main line 108, and can be connected to the sampling main line 108 via laser soldering. The first branch circuit board 106 and the second branch circuit board 107 are connected along the length of the sampling board 103 to the end of the main circuit board 105 away from the sampling main line 108. Specifically, one end of the main circuit board 105 along its length is connected to the sampling main line 108, and the first branch circuit board 106 and the second branch circuit board 107 are connected to the other end of the main circuit board 105 along its length. The first branch circuit board 106 and the second branch circuit board 107 are used to connect to the busbar 102 to transmit temperature and voltage signals.

[0050] It should be noted that the connection lines on the main circuit board 105, the first branch circuit board 106, and the second branch circuit board 107 can be configured as needed. The soldering positions of the main circuit board 105 and the sampling main line 108 can be set according to the configured connection lines. For example, the first branch circuit board 106 and the second branch circuit board 107 each have two lines, thus forming four lines on the main circuit board 105. These four lines can be soldered to different positions on the sampling main line 108, thereby achieving electrical connection between the first branch circuit board 106, the second branch circuit board 107, and the sampling main line 108. The specific configuration of the connection lines and soldering positions can be customized as needed, and this application does not impose any limitations.

[0051] The sampling branch 101 also includes a connector 104, which is specifically made of plastic such as polyethylene or polypropylene. The connector 104 is connected to the end of the first branch circuit board 106 and the second branch circuit board 107 away from the main circuit board 105, and the connector 104 can be slidably installed on the conductive busbar 102 along the length of the sampling board 103, so that the first branch circuit board 106 is thermally connected to the conductive busbar 102 to collect a first signal, which is a temperature signal; and the second branch circuit board 107 is electrically connected to the conductive busbar 102 to collect a second signal, which is a voltage signal.

[0052] The signal acquisition component provided in this application integrates the temperature sampling line and the voltage sampling line into one unit. By setting the connector 104, the temperature monitoring point and voltage monitoring point of the sampling board 103 can be simultaneously positioned on the conductive busbar 102, which simplifies the installation process of the signal acquisition component and improves the installation efficiency. Furthermore, the connector 104 is slidably installed on the conductive busbar 102, which can accurately control the length of the sampling branch 101 and optimize the phenomenon of bending and arc-shaped lifting.

[0053] In an optional embodiment, one of the first branch circuit board 106 and the second branch circuit board 107 is connected to the upper surface of the conductive bus 102, and the other is connected to the lower surface of the conductive bus 102. For example... Figure 3 and Figure 4 As shown, the first branch circuit board 106 is connected to the upper surface of the conductive bus 102, and the second branch circuit board 107 is connected to the lower surface of the conductive bus 102. The conductive bus 102 can isolate the first branch circuit board 106 and the second branch circuit board 107 so that the signals collected by the first branch circuit board 106 and the second branch circuit board 107 will not interfere with each other, thereby improving the accuracy of their detection.

[0054] In an optional embodiment, the connector 104 has a receiving cavity; a first socket 109 is provided on the side of the receiving cavity near the sampling plate 103, through which the first branch circuit board 106 and the second branch circuit board 107 are inserted; the conductive bus 102 includes a plug-in portion 110; a second socket 111 is provided on the other side of the receiving cavity, communicating with the first socket 109, through which the plug-in portion 110 is inserted into the receiving cavity. The receiving cavity is used to accommodate and fix the first branch circuit board 106, the second branch circuit board 107, and the conductive bus 102, so that the first branch circuit board 106 and the second branch circuit board 107 are respectively fitted and connected to the upper and lower end faces of the plug-in portion 110, thereby ensuring the reliability of the connection and the accuracy of signal detection. The first branch circuit board 106, the second branch circuit board 107, and the conductive bus 102 are all connected to the connector 104 by plugging, which simplifies the installation operation and improves the installation efficiency.

[0055] like Figures 2 to 6 As shown, the receiving cavity is also provided with a filling port 120, which is opposite to the first branch circuit board 106. UV quick-drying glue or sealant 121 such as acrylic or polyurethane is injected into the receiving cavity through the filling port 120 to wrap and protect the temperature sensors 119 such as thermistors on the first branch circuit board 106, thereby improving their working stability and service life. At the same time, it can also improve the stability of the connection between the connector 104 and the first branch circuit board 106.

[0056] In an optional embodiment, the connector 104 is further provided with a slot 112; the conductive bus 102 also includes a first sliding part 113, which is slidably mounted in the slot 112, thereby guiding the sliding direction of the connector 104. Furthermore, the slot wall of the slot 112 is provided with a positioning protrusion 114 to apply pressure and position the first sliding part 113.

[0057] In this embodiment, such as Figure 5 and Figure 6As shown, the positioning protrusion 114 includes multiple arc-shaped locking posts arranged at intervals on the lower wall of the locking slot 112. The height of the locking posts is slightly higher than the distance between the bottom of the conductive bus 102 and the bottom surface of the locking slot 112, generally 0.1mm to 0.3mm higher. When the connector 104 is slidably installed with the conductive bus 102, the locking posts are squeezed and deformed; when the first branch circuit board 106 and the second branch circuit board 107 reach the data monitoring point, the reaction force of the locking posts can exert a certain squeezing and fastening effect on the conductive bus 102, improving the stability of the connection between the connector 104 and the conductive bus 102. Furthermore, the upward reaction force of the locking posts can squeeze the conductive bus 102, making the upper surface of the conductive bus 102 fit more tightly with the first branch circuit board 106, improving the accuracy of temperature measurement. Compared with the use of adhesive on the back of the thermistor in the prior art, the extrusion connection method reduces costs and avoids the problem of thermistor detachment due to adhesive aging.

[0058] In an optional embodiment, the conductive busbar 102 further includes a main body 115; the first sliding part 113 is spaced apart on both sides of the insertion part 110 and is connected to the main body 115 to form a sliding groove 116; the opening of the sliding groove 116 faces the sampling plate 103, the dimension of the sliding groove 116 along the length direction of the sampling plate 103 is larger than the dimension of the connector 104 along the length direction of the sampling plate 103, and the bottom of the sliding groove 116 is used to limit the sliding range of the connector 104.

[0059] In this embodiment, the first sliding portions 113 on both sides of the insertion portion 110 can slide along the slots 112 on both sides of the connector 104. The first sliding portions 113 on both sides can limit the connector 104 from opposite sides, thereby achieving a more precise guiding effect. Two second sliding portions 117 are formed between the slots 112 on both sides and the receiving cavity. The two second sliding portions 117 slide along the corresponding sliding grooves 116 respectively, so that the connector 104 and the conductive bus 102 are inserted into each other, thereby ensuring the stability of the connection.

[0060] The dimension of the sliding groove 116 along the length of the sampling plate 103 is larger than the dimension of the connector 104 along the length of the sampling plate 103, which allows the second sliding part 117 to be completely located within the sliding groove 116, preventing the connector 104 from slipping off; and the sliding groove 116 can provide a longer sliding adjustment range for the connector 104. By controlling the length of the sliding groove 116, the monitoring position and length of the sampling branch 101 can be controlled, thereby adapting to different battery cells or different monitoring positions, improving the applicability of the signal acquisition component, and reducing costs.

[0061] In an optional embodiment, a positioning boss 118 is provided on the side of the receiving cavity near the second branch circuit board 107 to apply pressure to the second branch circuit board 107.

[0062] In this embodiment, the height of the positioning boss 118 is between 0.03mm and 0.1mm, and the shape of the positioning boss 118 is consistent with the shape of the second branch circuit board 107. When the first branch circuit board 106 and the second branch circuit board 107 reach the data monitoring point, the positioning boss 118 will cause the second branch circuit board 107 to press against the lower surface of the conductive busbar 102, thereby making their surfaces fit tightly together and avoiding poor contact between the second branch circuit board 107 and the conductive busbar 102 caused by vibration, impact, etc., thus improving the measurement accuracy. Compared with the existing laser welding nickel sheet process for acquiring voltage signals, the extrusion connection method reduces costs and improves installation convenience.

[0063] Example 2

[0064] The signal acquisition component in this second embodiment is an improvement on the above embodiments. The technical content disclosed in the above embodiments will not be described again, and the content disclosed in the above embodiments also belongs to the content disclosed in this second embodiment.

[0065] See Figures 2 to 4 As shown, in an optional embodiment, a first branch circuit board 106 and a second branch circuit board 107 are sequentially connected along the width direction of the main circuit board 105, forming an arc-shaped notch between the first branch circuit board 106 and the second branch circuit board 107. The projections of the first branch circuit board 106 and the second branch circuit board 107 in the thickness direction of the main circuit board 105 overlap at their ends away from the main circuit board 105. At least one of the first branch circuit board 106 and the second branch circuit board 107 connected to the end of the main circuit board 105 is bent, so that the first branch circuit board 106 and the second branch circuit board 107 are spaced apart along the thickness direction of the main circuit board 105 and their projections overlap. On the one hand, the integration of the first branch circuit board 106, the second branch circuit board 107, and the main circuit board 105 simplifies the installation operation, and the three will not interfere with each other, thus not affecting the accuracy of soldering and testing. On the other hand, the other end of the first branch circuit board 106 and the second branch circuit board 107 cooperates with the connector 104 and can be detachably fixed to the conductive busbar 102, which improves the convenience of installation and maintenance. The first branch circuit board 106 and the second branch circuit board 107 can also be installed in the limited space on the conductive busbar 102, thereby improving space utilization.

[0066] In an optional embodiment, on a plane parallel to the surface of the main circuit board 105, the first branch circuit board 106 has a tortuous first extension path, and the second branch circuit board 107 has a tortuous second extension path, with the extension directions of the first extension path and the second extension path being arranged opposite to each other.

[0067] In this embodiment, both the first branch circuit board 106 and the second branch circuit board 107 are provided with S-shaped deformable portions. When the sampling branch 101 is subjected to an external force, the force is transmitted to the deformable portion, causing it to deform. This allows the sampling branch 101 to move relative to the sampling main line 108, preventing it from tearing or detaching from the sampling main line 108 under external force. Furthermore, the deformation of the deformable portion under external force also acts as a buffer, preventing the sampling branch 101 from breaking under stress.

[0068] In an optional embodiment, the first extension path of the first branch circuit board 106 protrudes beyond the main circuit board 105 in the width direction; and / or, the second extension path of the second branch circuit board 107 protrudes beyond the main circuit board 105 in the width direction. That is, the first branch circuit board 106 and the second branch circuit board 107 have a high degree of bending, thus providing greater margin for deformation and providing better buffering protection. Furthermore, the arrangement of the first extension path of the first branch circuit board 106 and the second extension path of the second branch circuit board 107 allows for stretching or contraction of the first branch circuit board 106 and the second branch circuit board 107 according to the different distances between the sampling main line 108 and the conductive busbar 102, thereby adapting to different application scenarios.

[0069] Example 3

[0070] Embodiment 3 of this application provides a battery module including the signal acquisition component of any of the above embodiments. The battery module includes multiple battery cells, and the signal acquisition component is used to acquire signals from the battery cells. Therefore, all the beneficial technical effects of the signal acquisition component of any of the above embodiments are achieved, and will not be repeated here.

[0071] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application. In addition, those skilled in the art can understand that although some embodiments herein include certain features included in other embodiments but not other features, combinations of features from different embodiments are meant to be within the scope of this application and form different embodiments.

Claims

1. A signal acquisition component, characterized in that, It includes a sampling branch (101), a busbar (102), and a sampling main line (108); The sampling branch (101) includes: A sampling board (103) includes a main circuit board (105), a first branch circuit board (106), and a second branch circuit board (107). The main circuit board (105) is used to connect to the sampling main line (108). The first branch circuit board (106) and the second branch circuit board (107) are connected along the length direction of the sampling board (103) to one end of the main circuit board (105) away from the sampling main line (108). A connector (104) is slidably mounted on the busbar (102) along the length of the sampling plate (103) so that the first branch circuit board (106) is thermally connected to the busbar (102) to acquire a first signal; and the second branch circuit board (107) is electrically connected to the busbar (102) to acquire a second signal.

2. The signal acquisition component according to claim 1, characterized in that, One of the first branch circuit board (106) and the second branch circuit board (107) is connected to the upper surface of the conductive bus (102), and the other is connected to the lower surface of the conductive bus (102).

3. The signal acquisition component according to claim 1, characterized in that, The connector (104) has a receiving cavity, and a first socket (109) is provided on the side of the receiving cavity near the sampling plate (103). The first branch circuit board (106) and the second branch circuit board (107) are inserted into the receiving cavity through the first socket (109). The conductive bus (102) includes a plug-in portion (110); a second socket (111) is provided on the other side of the receiving cavity, which is in communication with the first socket (109). The plug-in portion (110) is inserted into the receiving cavity through the second socket (111) to connect the first branch circuit board (106) and the second branch circuit board (107); wherein the first branch circuit board (106) and the second branch circuit board (107) are connected to the upper and lower ends of the plug-in portion (110).

4. The signal acquisition component according to claim 3, characterized in that, The connector (104) is also provided with a slot (112); the conductive bus (102) also includes a first sliding part (113), which is slidably mounted in the slot (112); The groove wall of the slot (112) is provided with positioning protrusions (114) to apply pressure to position the first sliding part (113).

5. The signal acquisition component according to claim 4, characterized in that, The conductive bus (102) also includes a main body (115); the first sliding part (113) is spaced apart on both sides of the plug-in part (110) and is connected to the main body (115) to form a sliding groove (116); The opening of the sliding groove (116) faces the sampling plate (103). The dimension of the sliding groove (116) along the length direction of the sampling plate (103) is greater than the dimension of the connector (104) along the length direction of the sampling plate (103). The bottom of the sliding groove (116) is used to limit the sliding range of the connector (104).

6. The signal acquisition component according to claim 3, characterized in that, A positioning boss (118) is provided on the side of the receiving cavity near the second branch circuit board (107) to apply pressure to the second branch circuit board (107).

7. The signal acquisition component according to claim 1, characterized in that, The first branch circuit board (106) and the second branch circuit board (107) are connected sequentially in the width direction of the main circuit board (105), and an arc-shaped gap is formed between the first branch circuit board (106) and the second branch circuit board (107). The projections of the first branch circuit board (106) and the second branch circuit board (107) in the thickness direction of the main circuit board (105) overlap at the ends of the first branch circuit board (106) and the second branch circuit board (107) away from the main circuit board (105). Wherein, at least one of the first branch circuit board (106) and the second branch circuit board (107) connected to one end of the main circuit board (105) is bent so that the first branch circuit board (106) and the second branch circuit board (107) are spaced apart along the thickness direction of the main circuit board (105).

8. The signal acquisition component according to claim 7, characterized in that, On a plane parallel to the surface of the main circuit board (105), the first branch circuit board (106) has a tortuous first extension path, and the second branch circuit board (107) has a tortuous second extension path, with the extension directions of the first extension path and the second extension path being opposite to each other.

9. The signal acquisition component according to claim 7, characterized in that, The first extension path of the first branch circuit board (106) protrudes from the main circuit board (105) in the width direction; And / or, the second extension path of the second branch circuit board (107) protrudes from the main circuit board (105) in the width direction.

10. A battery module, characterized in that, Includes the signal acquisition component as described in any one of claims 1 to 9.

Images