Battery acquisition components and batteries

Abstract

This application relates to a battery sampling assembly and a battery, comprising: multiple wires arranged side by side, and an insulating film covering all the wires, each wire and the insulating film forming a sampling line. At least one portion of a sampling line is separated from the insulating film of an adjacent sampling line to form a sampling branch, and all sampling lines excluding the sampling branches form a main sampling path. Each sampling branch includes a tearable section and a sampling section. The tearable section extends in the same direction as the main sampling path, and the sampling section is bent to connect to the corresponding tearable section and extends away from the main sampling path. A connecting rib connects the insulating film of the tearable section to the insulating film of the adjacent sampling line and is configured to break when the sampling section is under tension, allowing the tearable section to tear away from the main sampling path and extend the length of the sampling branch in the direction of the sampling section's extension. The technical solution of this application can significantly improve the sampling reliability of the battery sampling assembly.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to battery acquisition components and batteries. Background Technology

[0002] The battery monitors its operating status by collecting the temperature and voltage of individual battery cells through a battery acquisition component. This component typically includes a main acquisition circuit, a thermistor, voltage sensors, and temperature sensors. The voltage and temperature sensors are connected to the main acquisition circuit, while the thermistor is located at the end of the temperature sensor facing away from the main circuit. The main acquisition circuit transmits the data collected by the voltage and temperature sensors to a host computer, such as the battery's BMS system.

[0003] Currently, voltage and temperature acquisition chips are mostly connected to the main acquisition circuit by welding, which can easily lead to problems such as poor welding and reduce the acquisition reliability of the battery acquisition component. Utility Model Content

[0004] Therefore, it is necessary to provide a battery acquisition component and battery to address the problem of low acquisition reliability of battery acquisition components.

[0005] In a first aspect, this application provides a battery acquisition component, comprising:

[0006] Multiple wires arranged side by side, and an insulating film covering all of the wires, each of the wires and the insulating film covering it form a data acquisition line;

[0007] At least one portion of the acquisition line is separated from the insulating film of the adjacent acquisition line to form an acquisition branch, and all the acquisition lines except for the portions of the acquisition branches form the acquisition main path;

[0008] Each of the aforementioned acquisition branches includes a tearable section and an acquisition section. The tearable section extends in the same direction as the main acquisition path, and the acquisition section is bent to connect to the corresponding tearable section and extends away from the main acquisition path.

[0009] A connecting rib connects the insulating film of the tearable segment to the insulating film of the adjacent acquisition line, and is configured to break when the acquisition segment is under tension, so as to allow the tearable segment to tear away from the acquisition main line and extend the length of the acquisition branch in the extension direction of the acquisition segment.

[0010] In some embodiments, the acquisition branch is located between the two ends of the acquisition line, and the acquisition line includes a first segment and a second segment located on both sides of the acquisition branch, the first segment being adjacent to the tearable segment, and the second segment being separated from the acquisition segment to allow the acquisition segment to bend and extend away from the acquisition main path relative to the tearable segment.

[0011] In some embodiments, the collecting segment is bent once relative to the tearable segment, and the bending angle is 80° to 100°.

[0012] In some embodiments, the length of the tearable segment accounts for no less than 50% of the length of the collection branch.

[0013] In some embodiments, each of the tearable segments is connected to the same acquisition line via a plurality of connecting ribs, and the plurality of connecting ribs are spaced apart along the extension direction of the tearable segment.

[0014] In some embodiments, each of the tearable segments includes a fixed end fixed to the main acquisition path, and the acquisition line where the tearable segment is located includes an anti-tear area adjacent to and connected to the fixed end; the battery acquisition assembly further includes anti-tear tape, and the anti-tear area of ​​the acquisition line and / or the fixed end of the acquisition branch are bonded to at least a portion of the remaining acquisition lines located in the main acquisition path by the anti-tear tape.

[0015] In some embodiments, the acquisition branch includes a voltage acquisition branch, the battery acquisition component includes an adapter circuit board, the adapter circuit board includes a substrate and a conductive layer disposed on the substrate, and the substrate is provided with a connection portion for connecting to a busbar.

[0016] A portion of the conductive layer is located on the substrate and is welded to the acquisition segment of the voltage acquisition branch, while another portion extends out of the substrate for electrical connection with the busbar.

[0017] In some embodiments, the conductive layer includes a first pad and a fuse segment located on the substrate, the conductive layer includes a second pad that extends at least partially out of the substrate, and the fuse segment is connected between the first pad and the second pad.

[0018] In some embodiments, the conductive layer is soldered to the tin material of the acquisition segment, and a protective adhesive layer is provided at the soldering position.

[0019] In some embodiments, a positioning post is provided on the substrate, and a positioning hole is provided on the acquisition segment, with the positioning post adapted to be disposed in the positioning hole.

[0020] In some embodiments, the connecting portion includes a snap-fit ​​portion, the snap-fit ​​portion includes a snap-fit ​​groove, the snap-fit ​​groove is disposed on a sidewall of the adapter circuit board surrounding its thickness direction, and a flexible protrusion is disposed in the snap-fit ​​groove.

[0021] In some embodiments, the acquisition branch includes a temperature acquisition branch, and the battery acquisition component further includes a thermistor;

[0022] The acquisition segments of the two temperature acquisition branches are respectively welded to the positive and negative terminals of the thermistor, and a protective layer is wrapped around the welding position; the thermistor is used for thermally conductive connection with the battery's busbar.

[0023] In some embodiments, of the two temperature acquisition branches connecting the thermistor, one is positioned closer to the edge of the main acquisition path than the other, and the extension length of the one branch is less than the extension length of the other branch.

[0024] In some embodiments, the acquisition branch includes a voltage acquisition branch and a temperature acquisition branch, wherein the folding direction of the acquisition segment of the temperature acquisition branch relative to the corresponding tearable segment is opposite to the folding direction of the acquisition segment of the voltage acquisition branch relative to the corresponding tearable segment in the thickness direction of the battery acquisition assembly.

[0025] Secondly, this application provides a battery, comprising:

[0026] Battery cell;

[0027] The busbar is electrically connected to the terminal of the battery cell;

[0028] As described in the first aspect, in the battery acquisition assembly, the acquisition segment of the acquisition branch is connected to the busbar, and the busbar and the acquisition main path are staggered in the parallel direction of the conductor.

[0029] In some embodiments, the acquisition branch includes a voltage acquisition branch, the battery acquisition assembly includes an adapter circuit board connected to the voltage acquisition branch, the busbar includes a snap-fit ​​hole, the snap-fit ​​hole is provided through the thickness direction of the busbar and a notch is formed on the side facing the acquisition main road, the adapter circuit board passes through the notch and snaps into the snap-fit ​​hole.

[0030] In some embodiments, the acquisition branch includes a temperature acquisition branch, one end of the busbar in the thickness direction is provided with an overflow groove, the battery acquisition assembly includes a thermistor connected to the temperature acquisition branch, the thermistor is bonded in the overflow groove; the thermistor is wrapped with curing adhesive, and the projection of the curing adhesive along the thickness direction of the busbar is located in the overflow groove.

[0031] In some embodiments, the battery further includes a separator separating the battery cell and the battery acquisition assembly, with the busbar located on the side of the separator away from the battery cell; the separator has a clearance groove and a clearance hole, with the voltage acquisition branch passing through the clearance groove, and the clearance hole opposite to the busbar to avoid connection between the busbar and the terminal post.

[0032] Compared with the prior art, this application has the following beneficial effects:

[0033] The aforementioned battery sampling assembly and battery feature an integrated connection between the sampling branch and the main sampling path, resulting in a more reliable connection compared to traditional welding methods. Furthermore, a portion of the sampling branch is fixed to the main sampling path via connecting ribs, serving as a tearable section. These ribs distribute stress on the sampling branch during transportation or production, enhancing its overall strength and preventing warping or deformation of the tearable section within the main sampling path during manufacturing or transport. Additionally, the connecting ribs break when the battery cell expands and pulls on the sampling branch, allowing the tearable section to separate from the main sampling path and adapting to positional changes between the battery cell and the main sampling path. This ensures the sampling branch remains intact and maintains its integrity with the main sampling path. These features significantly improve the sampling reliability of the battery sampling assembly. Attached Figure Description

[0034] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiments below. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0035] Figure 1 This is a schematic diagram of the battery acquisition component in some embodiments;

[0036] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0037] Figure 3 for Figure 1 Enlarged view of point B in the middle;

[0038] Figure 4 for Figure 1 Another view of the battery acquisition component shown;

[0039] Figure 5 for Figure 4 Enlarged view of point C in the middle;

[0040] Figure 6 This is a schematic diagram illustrating the interaction between the battery acquisition component and the busbar in some embodiments;

[0041] Figure 7 This is a schematic diagram of the structure of the adapter circuit board in some embodiments;

[0042] Figure 8 These are schematic diagrams of the substrate structure in some embodiments;

[0043] Figure 9These are schematic diagrams of the battery structure in some embodiments;

[0044] Figure 10 for Figure 9 Another view of the battery shown;

[0045] Figure 11 for Figure 10 Enlarged view of point D in the middle;

[0046] Figure 12 These are schematic diagrams of the busbar structure in some embodiments;

[0047] Figure 13 This is a schematic diagram of the structure of a busbar in some other embodiments.

[0048] The reference numerals in the detailed embodiments are as follows:

[0049] 1000, Battery; 100, Battery acquisition component; 101, Wire; 102, Insulating film; L, Acquisition line; L1, First segment; L2, Second segment; 10, Acquisition branch; 11, Tearable segment; 12, Acquisition segment; 10a, Voltage acquisition branch; 10b, Temperature acquisition branch; 20, Main acquisition path; p, Cutout area; 30, Connecting rib; 40, Tear-resistant tape; 50, Adapter circuit board; 51, Substrate; 51a, Snap-fit ​​part; a1, snap-fit ​​groove; a2, flexible protrusion; 51b, positioning post; 51c, protective adhesive layer; 52, conductive layer; 52a, first solder pad; 52b, fuse segment; 52c, second solder pad; 60, thermistor; 70, protective layer; 200, battery cell; 201, terminal post; 300, busbar; 301, snap-fit ​​hole; 302, overflow groove; 400, cured adhesive; 500, separator; 501, clearance groove; 502, clearance hole. Detailed Implementation

[0050] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0051] In the description of this application, it should be understood that, where they appear, the terms “center,” “longitudinal,” “lateral,” “length,” “width,” “thickness,” “upper,” “lower,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” “outer,” “clockwise,” “counterclockwise,” “axial,” “radial,” and “circumferential” 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.

[0052] Furthermore, where applicable, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0053] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," "fixing," etc., shall be interpreted broadly. For example, they may refer to a fixed connection, a detachable connection, or an integral part; they may refer to a mechanical connection or an electrical connection; they may refer to a direct connection or an indirect connection through an intermediate medium; they may refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0054] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0055] It should be noted that, if an element is described as "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is described as "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0056] To improve the reliability of battery acquisition components, this application proposes a battery acquisition component and a battery.

[0057] The battery involved in this application embodiment can be a battery pack or a battery module. When the battery is a battery pack, the battery pack also includes a battery management system (BMS) and multiple battery cells. Multiple battery cells can be electrically connected in series, parallel, or a combination of series and parallel connections, and communicate with the battery management system through a data acquisition component. The battery management system controls and monitors the operating status of each battery cell. Alternatively, multiple battery cells can first be connected to a module management system via a data acquisition component to form a battery module, and then these battery modules can be electrically connected in series, parallel, or a combination of series and parallel connections to form a battery pack together with the battery management system.

[0058] The battery cell involved in the embodiments of this application is the smallest unit in which an electrochemical reaction takes place in a battery, and can be a secondary battery or a primary battery. The battery cell can be a lithium-ion battery, a sodium-ion battery, a magnesium-ion battery, or a solid-state battery, but is not limited to these. The battery cell can be cylindrical, flat, cuboid, or other shapes.

[0059] In some embodiments, the battery cell includes a housing, an end cap, and an electrode assembly. The housing and the end cap together form an internal space for accommodating the electrode assembly. Specifically, a receiving cavity may be formed within the housing, with at least one end open. The end cap closes to the open end of the housing to seal the receiving cavity, and the electrode assembly is mounted within the receiving cavity. The housing may be, but is not limited to, a metal housing, such as an aluminum housing or a steel housing.

[0060] Electrode assemblies typically include a positive electrode, a negative electrode, and a separator separating the positive and negative electrodes. An electrolyte can be injected into the battery cell, wetting the interior of the electrode assembly and providing ion migration pathways for electrochemical reactions, as well as conducting electricity. Electrode assemblies can be in the form of wound, stacked, etc. One or more electrode assemblies can be installed within a single battery cell.

[0061] The battery described in this application includes a battery acquisition component and a busbar. The busbar is used for electrical connection with the terminals of individual battery cells. The connection between the busbar and the terminals can be achieved through welding, snap-fit, or other methods. The busbar can be made of metal. One busbar can be connected simultaneously to terminals of the same polarity of multiple battery cells, enabling parallel connection of the battery cells. A busbar can also be connected between terminals of different polarities of different battery cells, enabling series connection of the battery cells. The battery acquisition component can be connected to the busbar to acquire the operating data of the battery cells and send the acquired data to the BMS (Battery Management System) for BMS management of the battery's operating status.

[0062] The battery acquisition component in the embodiments of this application is described in detail below.

[0063] Please refer to Figure 1 , Figure 2 and Figure 3 The battery acquisition assembly 100 provided in this application embodiment includes multiple wires 101 arranged side by side and an insulating film 102 covering all the wires 101. Each wire 101 and the insulating film 102 covering it form an acquisition line L. At least a portion of at least one acquisition line L is separated from the insulating film 102 of an adjacent acquisition line L to form an acquisition branch 10. All acquisition lines L except for the portions of the acquisition branches 10 form an acquisition main path 20. Each acquisition branch 10 includes a tearable segment 11 and an acquisition segment 12. The tearable segment 11 extends in the same direction as the acquisition main path 20, and the acquisition segment 12 is bent and connected to the corresponding tearable segment 11 and extends away from the acquisition main path 20. A connecting rib 30 connects the insulating film 102 of the tearable segment 11 to the insulating film 102 of the adjacent acquisition line L and is configured to break when the acquisition segment 12 is stretched, so as to allow the tearable segment 11 to tear away from the acquisition main path 20 and extend the length of the acquisition branch 10 in the extension direction of the acquisition segment 12. This prevents the acquisition branch 10 from becoming scattered, significantly improving the rigidity and stability of the battery acquisition assembly 100, thereby enhancing the reliability of information acquisition. Furthermore, when the tearable section 11 is torn away from the main acquisition path 20, this part becomes completely independent and becomes part of the acquisition branch 10. This keeps the main acquisition path 20 clean and clear, without any excess hanging objects or redundant wiring harnesses that could cause short circuits, which is beneficial for electrical safety and subsequent assembly production. The wires 101 can be made of copper, aluminum, or other materials. The side-by-side direction of the wires 101 is the width direction of the battery acquisition assembly 100. All wires 101 are typically wrapped with the same insulating film 102, and adjacent wires 101 are insulated and isolated from each other by the insulating film 102. The insulating film 102 can be, but is not limited to, PI film, PET film, etc.

[0064] Each conductor 101 is connected to the outer insulating film 102 to form a data acquisition line L. The battery data acquisition assembly 100 can be regarded as being formed by multiple data acquisition lines L connected side by side along the above-mentioned parallel direction, and adjacent data acquisition lines L are connected by the insulating film 102.

[0065] A portion of each acquisition line L is designated as an acquisition branch 10, and the remaining portion of all acquisition lines L excluding acquisition branches 10 constitutes the acquisition main path 20. Acquisition branches 10 can be formed from a portion located at the end of the acquisition line L (referred to as end branches). Acquisition branches 10 can also be formed from a portion located in the middle of the acquisition line L (referred to as middle branches). The insulating film 102 of the acquisition branch 10 is separated from the insulating film 102 of the adjacent acquisition line L, meaning that the insulating films 102 between them are at least partially separated.

[0066] The acquisition branch 10 is elongated and divided into a tearable section 11 and an acquisition section 12 along its extension direction. In practical applications, the acquisition section 12 is used to acquire the working data (voltage data or temperature data) of the battery cell 200. One end of the acquisition main circuit 20 is provided with a connection terminal for connection with the BMS, which is electrically connected to each acquisition branch 10.

[0067] The insulating film 102 of the tearable segment 11 is connected to the insulating film 102 of the adjacent acquisition line L by a connecting rib 30. The insulating film 102 of the acquisition segment 12 is completely separated from the insulating film 102 of the adjacent acquisition line L, allowing the acquisition segment 12 to bend outward relative to the connected tearable segment 11 toward the outside of the battery acquisition assembly 100. The extension direction of the tearable segment 11 is approximately perpendicular to the aforementioned parallel direction. The extension direction of the acquisition segment 12 is the direction in which it extends after bending. If the acquisition segment 12 bends at a right angle relative to the tearable segment 11, its extension direction is approximately parallel to the parallel direction. If the acquisition segment 12 bends at an obtuse or acute angle relative to the tearable segment 11, its extension direction intersects with the parallel direction. Thus, it is possible to adjust according to different acquisition positions and absorb displacement when the battery cell 200 expands.

[0068] Alternatively, the tearable segment 11 and the insulating film 102 between adjacent acquisition lines L can be partially cut along the extension direction of the acquisition line L, with the uncut insulating film 102 serving as a connecting rib 30. Alternatively, the entire tearable segment 11 and the insulating film 102 between adjacent acquisition lines L can be cut along the extension direction of the acquisition line L, and an additional connecting rib 30 can be provided to connect the insulating film 102 of the tearable segment 11 to the insulating film 102 of the adjacent acquisition line L. The function of the connecting rib 30 is to maintain the connection between the tearable segment 11 and the main acquisition path 20, and to facilitate breakage when the tearable segment 11 is pulled, allowing the tearable segment 11 to be torn away from the main acquisition path 20 under tensile force, thus preventing the main acquisition path 20 from being torn apart when the tearable segment 11 is torn away.

[0069] In practical applications, the acquisition segment 12 of the battery acquisition assembly 100 is connected to the busbar 300 on the battery cell 200. When the battery cell 200 expands and its relative position to the main acquisition path 20 changes in the expansion direction, the battery cell 200 pulls the acquisition branch 10 through the busbar 300. Under the pulling force, the tearable segment 11 connecting the acquisition branch 10 and the connecting rib 30 between the adjacent acquisition line L are broken, and the tearable segment 11 separates from the main acquisition path 20. This extends the length of the acquisition branch 10 in the extension direction of the acquisition segment 12, allowing the acquisition branch 10 to adapt to the positional changes between the battery cell 200 and the main acquisition path 20, preventing the acquisition branch 10 from breaking. The breakage only releases the tearable segment 11, extending the length of the acquisition branch without affecting the structural integrity of the main acquisition path 20. After adapting to the expansion of the battery cell 200, the information acquisition function can still reliably transmit data. Thus, this greatly alleviates the cyclic stress borne by the acquisition branch 10, thereby extending the service life and reliability of the entire acquisition system.

[0070] In this embodiment, the battery sampling assembly 100 integrates the sampling branch 10 with the main sampling path 20, resulting in a more reliable connection compared to traditional welding methods. Furthermore, a portion of the sampling branch 10 serves as a tearable section 11, fixed to the main sampling path 20 by a connecting rib 30. The connecting rib 30 distributes stress on the sampling branch 10 during transportation or production, enhances its overall strength, and prevents the tearable section 11 located on the main sampling path 20 from warping or deforming. Additionally, the connecting rib 30 breaks when the battery cell 200 expands and pulls on the sampling branch 10, allowing the tearable section 11 to separate from the main sampling path 20 and adapt to positional changes between the battery cell 200 and the main sampling path 20. This ensures the sampling branch 10 is not broken and maintains its integrity with the main sampling path 20. Thus, the sampling reliability of the battery 1000 sampling assembly is significantly improved.

[0071] It should be noted that the "side-by-side direction" mentioned in the embodiments of this application refers to the direction indicated by F1 in the figure, and the "thickness direction" of each component is parallel to the direction indicated by F2 in the figure.

[0072] In some embodiments, refer to Figure 2 It is understood that the acquisition branch 10 is located between the two ends of the acquisition line L, and the acquisition line L includes a first segment L1 and a second segment L2 located on both sides of the acquisition branch 10. The first segment L1 is adjacent to the tearable segment 11, and the second segment L2 is separated from the acquisition segment 12 to allow the acquisition segment 12 to bend and extend away from the acquisition main road 20 relative to the tearable segment 11.

[0073] Yes, the second segment L2 can be without a circuit, thus saving raw materials and reducing production costs.

[0074] At least one acquisition branch 10 is formed in the middle of the acquisition line L, that is, at least one acquisition branch 10 of the acquisition line L is a middle branch. Alternatively, all acquisition branches 10 of the acquisition lines L are middle branches. Alternatively, some acquisition branches 10 of the acquisition lines L are middle branches, and the remaining acquisition branches 10 of the acquisition lines L are end branches.

[0075] In practical applications, multiple wires 101 of equal length can be covered with an insulating film 102 to form a data acquisition line L of equal length. Then, based on the arrangement of the acquisition branch 10 on the acquisition line L, the acquisition line L itself is first cut into two segments. The tail of the segment connected to the connecting terminal is then separated from the insulating film 102 between the segment and the adjacent acquisition line L to form the acquisition branch 10. The other segment, not connected to the connecting terminal, is the second segment L2. This helps to standardize the specifications of the wires 101, simplifies the fabrication of the battery acquisition assembly 100, and facilitates manufacturing.

[0076] In some embodiments, refer to Figure 3 The acquisition segment 12 is bent once relative to the tearable segment 11, with a bending angle of 80° to 100°. When the bending angle is less than 80°, the acquisition segment 12 needs a longer path to reach the terminal post 201 of the battery cell 200, encroaching on the space of adjacent battery cells 200 or acquisition branches 10, leading to a short circuit risk. Moreover, if the bending angle is too small, the tensile force generates a lateral component force, causing the connecting rib 30 to be sheared or twisted and broken. The breakage location is uncontrollable, resulting in damage to the insulating film 102. When the tearable segment 11 is torn, its extension direction deviates from the expansion direction of the battery cell 200, and it cannot effectively absorb the expansion of the battery cell 200. When the bending angle is greater than 100°, the angle between the tensile force direction and the connecting rib 30 is too large, and part of the force is converted into a peeling force on the main acquisition path 20. The connecting rib 30 does not break or breaks with delay, and it also damages the insulating film 102. Therefore, by setting the bending angle to 80° to 100°, the spatial layout can be optimized, the rib 30 can be controlled to break, the tensile force can be accurately transmitted, and the expansion of the battery cell 200 can be effectively absorbed. Figure 3 β represents the bending angle. Optionally, the bending angle is 90°, which can fully balance space efficiency and mechanical reliability, while improving assembly convenience. After the acquisition segment 12 is bent once relative to the tearable segment 11, it extends towards the main acquisition path 20. The battery cells 200 are usually arranged on both sides of the main acquisition path 20. When the bending angle of the acquisition segment 12 is within the above range, the extension length of the acquisition segment 12 is shorter. With the same length of acquisition branch 10, the length of the tearable segment 11 can be longer, which improves the connection reliability between the acquisition branch 10 and the main acquisition path 20 and enhances the overall structural strength of the battery acquisition assembly 100.

[0077] In some embodiments, the length of the tearable segment 11 accounts for no less than 50% of the length of the collection branch 10.

[0078] The tearable segment 11 extends in the same direction as the acquisition line L. The length of the tearable segment 11 is its dimension in the extending direction. The length of the acquisition segment 12 is its dimension in the extending direction. The length of the acquisition branch 10 is equal to the sum of the lengths of the tearable segment 11 and the acquisition segment 12. In this case, the length of the tearable segment 11 is greater than or equal to the length of the acquisition segment 12, which can improve the connection reliability between the acquisition branch 10 and the main acquisition line 20 and enhance the overall structural strength of the battery acquisition assembly 100.

[0079] In some embodiments, refer to Figure 3 Each tearable segment 11 is connected to the same acquisition line L via multiple connecting ribs 30, and these connecting ribs 30 are spaced apart along the extension direction of the tearable segment 11. In practical applications, when the tearable segment 11 is stretched, each connecting rib 30 breaks sequentially along the extension direction of the tearable segment 11. To make the connecting ribs 30 easier to break, the overall width of the connecting ribs 30 can be set to be small, or the width of a part of the connecting rib can be set to be small.

[0080] Understandably, the greater the unilateral expansion displacement of the battery cell 200, the greater the tensile force, and the more connecting ribs 30 can be broken. When the expansion displacement is within a certain range, only some of the connecting ribs 30 are broken, and the remaining connecting ribs 30 can still strengthen the connection between the tearable section 11 and the main acquisition path 20. As long as the expansion displacement does not exceed this range, the remaining connecting ribs 30 can still maintain the connection between the tearable section 11 and the main acquisition path 20, improving the overall strength of the battery acquisition assembly 100. When the expansion displacement exceeds this range, more connecting ribs 30 are broken, realizing the gradual tearing apart of the tearable section 11.

[0081] In some embodiments, combined with Figure 1 and Figure 2 It is understood that each tearable segment 11 includes a fixed end fixed to the main acquisition path 20, and the acquisition line L where the tearable segment 11 is located includes an anti-tear area adjacent to the fixed end. The battery acquisition assembly 100 also includes anti-tear tape 40, and the anti-tear area of ​​the acquisition line L and the fixed end of the acquisition branch 10 are bonded to at least a portion of the remaining acquisition lines L located in the main acquisition path 20 by the anti-tear tape 40.

[0082] Whether in the tear-resistant area of ​​the acquisition line L or at the fixed end of the acquisition branch 10, if tear-resistant tape 40 is installed, the structural strength of these areas and other parts of the acquisition main line 20 will be strengthened by the tear-resistant tape 40. When the tearable section 11 is torn away from the acquisition main line 20, it will not tear the tear-resistant area and the fixed end due to the obstruction of the tear-resistant tape 40. This avoids the problem that if the acquisition branch 10 breaks off from the acquisition main line 20, the acquisition line L where the acquisition branch 10 is located will be unable to acquire the working data of the battery cell 200. The installation of tear-resistant tape 40 can improve the acquisition reliability of the battery acquisition assembly 100.

[0083] To improve the adhesion of the ripstop tape 40, the ripstop tape 40 can be extended along the parallel direction to connect with each acquisition line L.

[0084] In some embodiments, combined with Figure 4 and Figure 5 Understandably, the acquisition branch 10 includes a voltage acquisition branch 10a, and the battery acquisition assembly 100 includes a converter circuit board 50. The converter circuit board 50 includes a substrate 51 and a conductive layer 52 disposed on the substrate 51. The substrate 51 has a connection portion for connecting to the busbar 300. A portion of the conductive layer 52 is located on the substrate 51 and is soldered to the acquisition segment 12 of the voltage acquisition branch 10a, while another portion extends out of the substrate 51 for electrical connection with the busbar 300.

[0085] Voltage acquisition branch 10a is used to acquire voltage data from individual battery cells 200. Specifically, as shown... Figure 6 As shown, the acquisition segment 12 of the voltage acquisition branch 10a is electrically connected to the busbar 300 via the adapter circuit board 50. The substrate 51 is typically an insulating board, on which a conductive layer 52 is fixed by means of printing, hot-melt bonding, etc. The conductive layer 52 includes two parts: one part is located on the substrate 51 and is soldered to the acquisition segment 12 of the voltage acquisition branch 10a, and the other part extends out of the substrate 51 for electrical connection with the busbar 300 (such as soldering, snap-fitting, crimping, etc.).

[0086] The adapter circuit board 50 is fixedly connected to the busbar 300 via a connecting portion on the substrate 51. The connecting portion may be a fastening connection hole for mounting fasteners such as screws, bolts or pins, a riveting portion for riveting to the busbar 300, or a snap-fit ​​portion 51a for snapping into the busbar 300.

[0087] Optionally, the conductive layer 52 is disposed on the surface of the substrate 51. Alternatively, the substrate 51 comprises two layers, with a portion of the conductive layer 52 disposed between the two layers of the substrate 51 to protect the conductive layer 52. If two layers are provided on the substrate 51, and the acquisition segment 12 of the voltage acquisition branch 10a is disposed on the surface of one of the layers, solder holes can be provided on the substrate 51, and solder can be filled into the solder holes to solder the conductive layer 52 to the acquisition segment 12. The substrate 51 can be made of a flame-retardant material, such as epoxy resin.

[0088] In some embodiments, refer to Figure 7 The conductive layer 52 includes a first pad 52a and a fuse segment 52b located on the substrate 51. The conductive layer 52 also includes a second pad 52c that extends at least partially out of the substrate 51. The fuse segment 52b is connected between the first pad 52a and the second pad 52c.

[0089] Preferably, the first pad 52a and the fuse segment 52b are disposed between the two layers of the substrate 51, i.e., they are encased by the substrate 51, thereby improving the structural strength of the conductive layer 52. The first pad 52a is soldered to the acquisition segment 12 of the voltage acquisition branch 10a, and the second pad 52c is used to solder to the bus 300. The fuse segment 52b refers to a conductive structure arranged in a filament shape, which can be curved, straight, or other complex patterns.

[0090] A fuse segment 52b is provided between the first pad 52a and the second pad 52c. In the event of a short circuit or overcurrent, the fuse segment 52b melts, promptly switching the connected acquisition line L to protect the battery 1000. The battery acquisition component 100 integrates a fuse function via the adapter circuit board 50, preventing situations where the circuit cannot be promptly disconnected for safety protection in the event of a short circuit or overcurrent. Preferably, the adapter circuit board 50 can be a printed circuit board, which reduces production costs and enables the battery acquisition component 100 to have a fuse function. When the battery 1000 experiences thermal runaway, a short circuit, or overcurrent, the transmission of electrical signals can be promptly and effectively cut off, providing safety assurance.

[0091] In practical applications, fuse segment 52b can be etched onto conductive layer 52 (such as copper foil).

[0092] In some embodiments, the conductive layer 52 is soldered to the solder of the acquisition segment 12, and a protective adhesive layer 51c is provided at the soldering position.

[0093] Specifically, the conductive layer 52 and the acquisition section 12 are soldered together using solder wire. This soldering method reduces the processing cost of the battery acquisition assembly 100. A protective adhesive layer 51c, such as UV adhesive, is applied outside the soldering point between the conductive layer 52 and the acquisition section 12. This not only isolates the soldering point from corrosive substances but also strengthens the soldering point.

[0094] In some embodiments, combined with Figure 5 , Figure 7 and Figure 8 As understood, the substrate 51 is provided with positioning posts 51b, and the acquisition segment 12 is provided with positioning holes (not shown). The positioning posts 51b are adapted to be placed inside the positioning holes. When welding the acquisition segment 12 and the substrate 51, the positioning holes on the acquisition segment 12 are first fitted over the positioning posts 51b to position the acquisition segment 12. This ensures high welding position accuracy and improves welding reliability. Furthermore, it allows for fully automated, unmanned processing, reducing manufacturing time and costs, and improving production efficiency and yield.

[0095] In some embodiments, refer to Figure 8 The connecting part includes a snap-fit ​​part 51a, and the snap-fit ​​part 51a includes a snap-fit ​​groove a1, which is disposed on the side wall of the adapter circuit board 50 surrounding its thickness direction.

[0096] The substrate 51 is engaged with the busbar 300 via a snap-fit ​​part 51a, making assembly convenient and reliable. Specifically, the substrate 51 is provided with a snap-fit ​​groove a1, which is recessed into the side wall of the substrate 51. The snap-fit ​​groove a1 can be arranged in a circle around the side wall of the substrate 51, or it can be provided on the two opposite side walls of the substrate 51. In practical applications, the busbar 300 surrounds the side wall of the substrate 51 and is engaged within the snap-fit ​​groove a1.

[0097] Furthermore, continue to refer to Figure 8 A flexible protrusion a2 is provided within the snap-fit ​​groove a1. Optionally, the flexible protrusion a2 is integrally formed with the substrate 51. The flexible protrusion a2 can be compressed. When the busbar 300 is snapped into the snap-fit ​​groove a1, the flexible protrusion a2 is compressed by the busbar 300 and provides a certain force to the busbar 300, so that the busbar 300 is tightly snapped into the snap-fit ​​groove a1. The provision of the flexible protrusion a2 allows the busbar 300 and the substrate 51 to have an interference fit, resulting in a more reliable connection.

[0098] In some embodiments, refer to Figure 1 and Figure 4 The acquisition branch 10 includes a temperature acquisition branch 10b, and the battery acquisition assembly 100 also includes a thermistor 60. The acquisition segments 12 of the two temperature acquisition branches 10b are respectively welded to the positive and negative terminals of the thermistor 60, and a protective layer 70 is wrapped around the welding points. The thermistor 60 is used for thermally conductive connection with the busbar 300 of the battery 1000.

[0099] Temperature acquisition branch 10b is used to acquire temperature data of the battery cell 200. Specifically, the acquisition segment 12 of temperature acquisition branch 10b is connected to the thermistor 60, and the busbar 300 is connected through the thermal conductivity of the thermistor 60 to acquire temperature data of the battery cell 200. Understandably, in order to form the electrical circuit containing the thermistor 60, there are usually two temperature acquisition branches 10b connected to the positive and negative terminals of the thermistor 60 respectively.

[0100] After the two temperature acquisition branches 10b are welded to the positive and negative terminals of the thermistor 60 respectively, a protective layer 70 is wrapped around the welding position. The protective layer 70 is mainly used to insulate and protect the welding position, prevent short circuit between the positive and negative terminals, and isolate the welding position from corrosive substances.

[0101] In actual operation, heat shrink tubing can be placed over the two terminals of the thermistor 60. After welding, the heat shrink tubing is moved to the welding position and heated to shrink it and protect the welding position.

[0102] In some embodiments, combined with Figure 1 and Figure 3 It is understood that in the two temperature acquisition branches 10b connected to the thermistor 60, one of them is located closer to the edge of the acquisition main path 20 than the other, and the extension length of the one branch is less than the extension length of the other branch.

[0103] The tearable sections 11 of the two temperature acquisition branches 10b are arranged sequentially in a parallel direction. Typically, the two acquisition branches 10 of two adjacent acquisition lines L serve as the two temperature acquisition branches 10b. One of the two temperature acquisition branches 10b is positioned relative to the edge of the main acquisition path 20. To facilitate soldering of the two temperature acquisition branches 10b to different terminals of the same thermistor 60, the bending angles of the acquisition sections 12 of the two temperature acquisition branches 10b are basically the same. The length of the bent portion of the temperature acquisition branch 10b positioned away from the edge is greater than the length of the bent portion of the temperature acquisition branch 10b positioned closer to the edge; therefore, the length of the temperature acquisition branch 10b positioned away from the edge needs to be longer.

[0104] In some embodiments, combined with Figure 1 and Figure 4 It is understood that the acquisition branch 10 includes a voltage acquisition branch 10a and a temperature acquisition branch 10b. The folding direction of the acquisition segment 12 of the temperature acquisition branch 10b relative to the corresponding tearable segment 11 is opposite to the folding direction of the acquisition segment 12 of the voltage acquisition branch 10a relative to the corresponding tearable segment 11 in the thickness direction of the battery acquisition assembly 100.

[0105] The battery acquisition component 100 integrates both voltage and temperature acquisition functions. The thickness direction of the battery acquisition component 100 is consistent with the thickness direction of the main acquisition path 20. After being folded relative to the corresponding tearable section 11 along the thickness direction, the acquisition segment 12 extends outward from the main acquisition path 20 in a roughly parallel direction. There are two folding directions for the acquisition segment 12 relative to the tearable section 11: one is folding upward from the main acquisition path 20 along the thickness direction, and the other is folding downward from the main acquisition path 20 along the thickness direction.

[0106] At this time, the folding direction of the voltage acquisition branch 10a is opposite to that of the temperature acquisition branch 10b. On one hand, the different folding directions allow for identification of the type of acquisition branch 10, facilitating connection between the acquisition branch 10 and the thermistor 60 or the aforementioned adapter circuit board 50, thus preventing mistaken connection. On the other hand, in practical applications, the temperature acquisition branch 10b is positioned above the main acquisition path 20 because it needs to be soldered to the terminals of the thermistor 60. Covering the soldering location with a protective layer 70 and placing it above facilitates operation. The voltage acquisition branch 10a only needs to be soldered to the conductive layer 52 on the substrate 51. Positioning it below the main acquisition path 20 is relatively simple, and the main acquisition path 20 can be used to hold the acquisition branch 10 in place, improving its positional stability.

[0107] In addition, this application also provides a battery 1000, see reference. Figure 9 and Figure 10 The battery 1000 includes a battery cell 200, a busbar 300, and the battery acquisition assembly 100 described in the above embodiments. The acquisition segment 12 of the acquisition branch 10 is connected to the busbar 300, and the busbar 300 and the main acquisition path 20 are staggered in the parallel direction of the conductor 101. The battery 1000 incorporates all the beneficial effects described in the above embodiments, which will not be elaborated upon here.

[0108] In some embodiments, combined with Figure 11 and Figure 13 It is understood that the acquisition branch 10 includes a voltage acquisition branch 10a, the battery acquisition assembly 100 includes a converter circuit board 50 connected to the voltage acquisition branch 10a, and the busbar 300 includes a snap-fit ​​hole 301, which is provided through the thickness direction of the busbar 300 and has a notch on the side facing the main acquisition path 20. The converter circuit board 50 passes through the notch and snaps into the snap-fit ​​hole 301.

[0109] If the adapter circuit board 50 includes the aforementioned substrate 51, a snap-fit ​​groove a1 is provided on the side wall of the substrate 51. The adapter circuit board 50 is located within the snap-fit ​​hole 301 of the busbar 300 and is snapped into the busbar 300 through the snap-fit ​​groove a1. The snap-fit ​​hole 301 can be a straight hole extending through the thickness direction of the busbar 300, with a notch formed on one side to facilitate the insertion of the adapter circuit board 50 into the snap-fit ​​hole 301. In this case, the busbar 300 and the adapter circuit board 50 have a simple structure, are easy to assemble, and have a reliable connection.

[0110] Of course, in other embodiments, the adapter circuit board 50 and the bus 300 may also adopt other snap-fit ​​methods.

[0111] In some embodiments, combined with Figure 9 and Figure 12 It is understood that the acquisition branch 10 includes a temperature acquisition branch 10b, and an overflow groove 302 is provided at one end of the busbar 300 in the thickness direction. The battery acquisition assembly 100 includes a thermistor 60 connected to the temperature acquisition branch 10b. The thermistor 60 is bonded inside the overflow groove 302. The thermistor 60 is wrapped with a curing adhesive 400, and the projection of the curing adhesive 400 along the thickness direction of the busbar 300 is located inside the overflow groove 302.

[0112] In practical applications, the thermistor 60 is first bonded to the bottom of the overflow tray 302 with thermally conductive adhesive. Then, curing adhesive 400 is poured onto the surface of the thermistor 60 to fix the thermistor 60 and the busbar 300. The overflow tray 302 is used to contain the curing adhesive 400 and limit the effective range of the curing adhesive 400, thereby improving the surface quality of the battery acquisition assembly 100.

[0113] Curing adhesive 400 can be a UV adhesive.

[0114] In some embodiments, combined with Figure 9 and Figure 10 It is understood that the battery 1000 also includes a separator 500, which separates the battery cell 200 and the battery acquisition assembly 100. The busbar 300 is located on the side of the separator 500 facing away from the battery cell 200. The separator 500 has a clearance groove 501 and a clearance hole 502. The voltage acquisition branch 10a passes through the clearance groove 501, and the clearance hole 502 is opposite to the busbar 300, used to avoid connection between the busbar 300 and the terminal 201.

[0115] A separator 500 is disposed at one end of the battery cell 200 where the terminal post 201 is located, serving to isolate the battery cell 200 from the battery acquisition assembly 100. It is made of insulating material. The separator 500 has clearance holes 502, through which the terminal post 201 passes and is welded to the busbar 300. Alternatively, the busbar 300 has a protrusion that passes through the clearance holes 502 and is connected to the terminal post 201.

[0116] As mentioned above, in practical applications, the voltage acquisition branch 10a is arranged below the main acquisition path 20. A clearance groove 501 is provided on the partition 500, and the voltage acquisition branch 10a passes through the clearance groove 501 and is then soldered to the adapter circuit board 50. In this way, the space occupied by the partition 500 can be used to arrange the voltage acquisition branch 10a, reducing the space occupied by the battery 1000 and making the battery 1000 structure more compact.

[0117] Understandably, as long as the solutions do not conflict, the above embodiments can be freely combined to obtain more embodiments.

[0118] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0119] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A battery acquisition component (100), characterized in that, include: Multiple wires (101) arranged side by side, and an insulating film (102) covering all of the wires (101), each of the wires (101) and the insulating film (102) covering it form a data acquisition line (L); At least one portion of the acquisition line (L) is separated from the insulating film (102) of the adjacent acquisition line (L) to form an acquisition branch (10), and all the acquisition lines (L) except for the portions of the acquisition branches (10) form an acquisition main path (20); Each of the acquisition branches (10) includes a tearable section (11) and an acquisition section (12). The tearable section (11) extends in the same direction as the acquisition main road (20). The acquisition section (12) is bent and connected to the corresponding tearable section (11) and extends away from the acquisition main road (20). A connecting rib (30) connects the insulating film (102) of the tearable segment (11) to the insulating film (102) of the adjacent acquisition line (L), and is configured to break when the acquisition segment (12) is under tension, so as to allow the tearable segment (11) to tear away from the acquisition main path (20) and extend the length of the acquisition branch (10) in the extension direction of the acquisition segment (12).

2. The battery harvesting assembly (100) of claim 1, wherein, The acquisition branch (10) is located between the two ends of the acquisition line (L), and the acquisition line (L) includes a first segment (L1) and a second segment (L2) located on both sides of the acquisition branch (10). The first segment (L1) is adjacent to the tearable segment (11), and the second segment (L2) is separated from the acquisition segment (12) to allow the acquisition segment (12) to bend and extend away from the acquisition main road (20) relative to the tearable segment (11).

3. The battery harvesting assembly (100) of claim 1, wherein, The collecting segment (12) is bent once relative to the tearable segment (11), and the bending angle is 80° to 100°. And / or, the length of the tearable segment (11) accounts for no less than 50% of the length of the collection branch (10); And / or, each of the tearable segments (11) is connected to the same acquisition line (L) via a plurality of the connecting ribs (30), and the plurality of connecting ribs (30) are spaced apart along the extension direction of the tearable segment (11); and / or, Each of the tearable segments (11) includes a fixed end fixed to the main acquisition path (20), and the acquisition line (L) where the tearable segment (11) is located includes a tear-resistant area adjacent to the fixed end; the battery acquisition assembly (100) also includes tear-resistant tape (40), and the tear-resistant area of ​​the acquisition line (L) and / or the fixed end of the acquisition branch (10) are bonded to at least a portion of the remaining acquisition line (L) located in the main acquisition path (20) through the tear-resistant tape (40).

4. The battery harvesting assembly (100) according to any one of claims 1-3, characterized in that, The acquisition branch (10) includes a voltage acquisition branch (10a), and the battery acquisition assembly (100) includes a converter circuit board (50). The converter circuit board (50) includes a substrate (51) and a conductive layer (52) disposed on the substrate (51). The substrate (51) is provided with a connection portion for connecting to the busbar (300). A portion of the conductive layer (52) is located on the substrate (51) and is welded to the acquisition segment (12) of the voltage acquisition branch (10a), while another portion extends out of the substrate (51) for electrical connection with the bus (300).

5. The battery harvesting assembly (100) of claim 4, wherein, The conductive layer (52) includes a first pad (52a) and a fuse segment (52b) located on the substrate (51), the conductive layer (52) includes a second pad (52c) that at least partially extends out of the substrate (51), and the fuse segment (52b) is connected between the first pad (52a) and the second pad (52c); and / or, The conductive layer (52) is soldered to the tin of the acquisition section (12), and a protective adhesive layer (51c) is provided at the soldering position.

6. The battery harvesting assembly (100) of claim 4, wherein, A positioning post (51b) is provided on the substrate (51), and a positioning hole is provided on the acquisition section (12), with the positioning post (51b) adapted to be disposed within the positioning hole; and / or, The connecting part includes a snap-fit ​​part (51a), the snap-fit ​​part (51a) includes a snap-fit ​​groove (a1), the snap-fit ​​groove (a1) is disposed on the side wall of the adapter circuit board (50) surrounding its thickness direction, and a flexible protrusion (a2) is disposed in the snap-fit ​​groove (a1).

7. The battery harvesting assembly (100) according to any one of claims 1-3, characterized in that, The acquisition branch (10) includes a temperature acquisition branch (10b), and the battery acquisition assembly (100) also includes a thermistor (60); The acquisition segments (12) of the two temperature acquisition branches (10b) are respectively welded to the positive and negative terminals of the thermistor (60), and a protective layer (70) is wrapped around the welding position; the thermistor (60) is used for thermal connection with the busbar (300) of the battery (1000); Of the two temperature acquisition branches (10b) connecting the thermistor (60), one is positioned closer to the edge of the acquisition main path (20) than the other, and the extension length of the one is less than the extension length of the other.

8. The battery harvesting assembly (100) according to any one of claims 1-3, characterized in that, The acquisition branch (10) includes a voltage acquisition branch (10a) and a temperature acquisition branch (10b). The folding direction of the acquisition segment (12) of the temperature acquisition branch (10b) relative to the corresponding tearable segment (11) is opposite to that of the folding direction of the acquisition segment (12) of the voltage acquisition branch (10a) relative to the corresponding tearable segment (11) in the thickness direction of the battery acquisition assembly (100).

9. A battery (1000), characterized in that, include: Battery cell (200); The busbar (300) is electrically connected to the terminal (201) of the battery cell (200); In the battery acquisition assembly (100) as described in any one of claims 1-8, the acquisition segment (12) of the acquisition branch (10) is connected to the busbar (300), and the busbar (300) and the acquisition main path (20) are staggered in the parallel direction of the conductor (101).

10. The battery (1000) according to claim 9, characterized in that, The acquisition branch (10) includes a voltage acquisition branch (10a), the battery acquisition assembly (100) includes a converter circuit board (50) connected to the voltage acquisition branch (10a), the busbar (300) includes a snap-fit ​​hole (301), the snap-fit ​​hole (301) is provided through along the thickness direction of the busbar (300), and a notch is formed on the side facing the acquisition main road (20), the converter circuit board (50) passes through the notch and snaps into the snap-fit ​​hole (301); And / or, the acquisition branch (10) includes a temperature acquisition branch (10b), one end of the busbar (300) in the thickness direction is provided with an overflow groove (302), the battery acquisition assembly (100) includes a thermistor (60) connected to the temperature acquisition branch (10b), the thermistor (60) is bonded in the overflow groove (302); the thermistor (60) is wrapped with curing adhesive (400), the projection of the curing adhesive (400) along the thickness direction of the busbar (300) is located in the overflow groove (302); And / or, the battery (1000) further includes a separator (500) separating the battery cell (200) and the battery acquisition assembly (100), the busbar (300) being located on the side of the separator (500) away from the battery cell (200); the separator (500) is provided with a clearance groove (501) and a clearance hole (502), the voltage acquisition branch (10a) passing through the clearance groove (501), and the clearance hole (502) being opposite to the busbar (300) to avoid the connection between the busbar (300) and the terminal (201).

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