Collection device and battery

Abstract

The utility model relates to the technical field of batteries, and discloses an acquisition device and a battery, the acquisition device comprises an insulating part, an acquisition part and a plurality of bars; the insulating part is arranged on one side, with an electrode, of the battery cell, the collecting part and the multiple chips are arranged on the same side, away from the battery cell, of the insulating part, through hole sites are formed in the positions, corresponding to the chips, of the insulating part, and part of the chips are exposed through the hole sites and connected with the electrode of the battery cell. The two adjacent battery cells are connected in series or in parallel; the acquisition piece comprises an acquisition main body and a plurality of acquisition pins connected to two sides of the acquisition main body along the Y direction, each acquisition pin is connected with one side, facing the insulating piece, of the corresponding bar piece, and the insulating piece is provided with a plurality of avoiding holes for accommodating the acquisition pins; the technical problem of how to reduce the space occupied by the collection device in the height direction is mainly solved.

Description

Technical Field

[0001] This utility model relates to the technical field of batteries, and in particular to a data collection device and a battery. Background Technology

[0002] Currently, battery packs utilize data acquisition devices (also known in the art as CCS (Cells Contact System) components). These devices connect the electrodes of each cell within the battery pack to the battery management system (BMS) via wiring harnesses or flexible printed circuit boards (FPCs). This allows the BMS to acquire data from each cell (e.g., temperature, voltage, or current) for monitoring their status. The BMS is also electrically connected to the battery control system (BDU), which controls the charging and discharging processes of each cell based on the data acquired by the BMS. Given the limited height of the battery pack, maximizing space utilization within this limited space is a critical technical challenge. Reducing the vertical space occupied by the data acquisition devices is one such approach, necessitating improvements to existing data acquisition devices.

[0003] The above information is provided as background information only to aid in understanding this disclosure and does not constitute an assertion or admission that any of the above content can be used as prior art relative to this disclosure. Utility Model Content

[0004] This utility model provides a data acquisition device and a battery, mainly solving the technical problem of how to reduce the space occupied by the data acquisition device in the vertical direction.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A data acquisition device is used to acquire the temperature and / or voltage of a battery cell. The data acquisition device includes an insulating component, a data acquisition component, and multiple electrodes.

[0007] The insulating component is located on the side of the battery cell with electrodes. The collecting component and the multiple electrodes are located on the same side of the insulating component away from the battery cell. The insulating component has through holes at the positions corresponding to each electrode. Some electrodes are exposed through the holes and connected to the electrodes of the battery cell, so that two adjacent batteries can be connected in series or in parallel.

[0008] The acquisition device includes an acquisition body and multiple acquisition feet connected to both sides of the acquisition body along the Y direction. Each acquisition foot is connected to a corresponding tab facing the side of the insulating member. The insulating member has multiple clearance holes for receiving the acquisition feet.

[0009] In one of the technical solutions, all the clearance holes penetrate the insulating member along the Z direction, and the acquisition foot is exposed through the clearance holes on the side of the insulating member facing the battery cell.

[0010] In one of the technical solutions, the insulating member is provided with a plurality of first grooves on the side facing the bar piece, each first groove is used to accommodate a corresponding bar piece, and the bottom of each first groove is provided with the hole and the clearance hole.

[0011] In one of the technical solutions, the flap includes a first connecting part, a bending part and a second connecting part connected in sequence;

[0012] Two holes are formed in each of the first grooves, and a portion of the first connecting part and a portion of the second connecting part are exposed through the holes and connected to the electrodes of the two adjacent cells.

[0013] The acquisition foot is connected to the side of the first connecting part or the second connecting part facing the first groove;

[0014] The bottom of the first groove is also provided with a clearance groove, and the bent part protrudes downward along the Z direction relative to the first connecting part or the second connecting part and is received in the clearance groove.

[0015] In one of the technical solutions, the first connecting part and the second connecting part are respectively provided with a first chamfer and a second chamfer, the sidewall of the first groove is provided with a first chamfer structure at the position corresponding to the first chamfer, and the sidewall of the first groove is provided with a second chamfer structure at the position corresponding to the second chamfer.

[0016] The first connecting portion and the second connecting portion are respectively provided with a first riveting area and a second riveting area. The first riveting area and the second riveting area are asymmetrical structures so that the bar sheet is riveted and fixed to the insulating component.

[0017] In one of the technical solutions, the acquisition body includes a fixed part and a protruding part connected together. The fixed part is fixed to the side of the insulating member away from the battery cell. The protruding part is connected to the fixed part along the Z direction and extends outward from the insulating member along the X direction.

[0018] The protrusion includes a first extension and a second extension connected at an angle. One end of the first extension is connected to the fixing part along the Z direction, and the second extension is connected to the other end of the first extension along the X direction, so that the protrusion and the fixing part form a Z-shaped structure.

[0019] In one of the technical solutions, the acquisition device further includes reinforcing plates and connectors that are fixed to both sides of the second extension, and the connectors are electrically connected to the acquisition body.

[0020] This application also provides a battery, including a battery module and the aforementioned acquisition device. The battery module includes a plurality of cells arranged in an array along the X direction. An insulating component in the acquisition device separates the acquisition body and the plurality of cells along the Z direction. The electrodes of the cells pass through the corresponding holes and are connected to the corresponding electrodes.

[0021] In one of the technical solutions, the battery further includes an end plate, which is disposed along the Z direction on the side of the insulating member facing the cell and located on the side of the battery module along the X direction. The end plate is used to limit the position of the battery module.

[0022] In one of the technical solutions, the end plate is provided with a positioning protrusion on the side facing the insulating member along the Z direction, and the outer edge of the insulating member is provided with a positioning hole that mates with the positioning protrusion.

[0023] The protrusion is located on the outside of the end plate, and a second groove is provided on the outer side of the end plate at the position corresponding to the first extension of the protrusion, and foam is provided in the second groove.

[0024] Compared with the prior art, the data acquisition device provided by this utility model has at least the following beneficial effects:

[0025] This solution connects each sampling pin on the existing sampling device to the bottom surface of a corresponding battery pack. Furthermore, it incorporates clearance holes on the bottom of each battery pack to accommodate the sampling pins. This design prevents the sampling pins from occupying space on the top of the battery pack, reducing the vertical space required by the sampling device and improving battery space utilization and energy density. Additionally, the clearance holes prevent the sampling pins from bulging upwards on the insulation, ensuring the battery pack remains stable. Moreover, placing the sampling pins on the bottom surface of the battery pack prevents them from pressing against the top surface when welding the battery pack and the electrodes of the underlying battery cell. This improves the reliability of the welding process and reduces the risk of the sampling pins being damaged by the sleeve during the connection process. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a top view of the structure of a data acquisition device provided in Embodiment 1 of this application;

[0028] Figure 2 for Figure 1 A magnified view of a section at point A in the middle;

[0029] Figure 3 for Figure 1 The diagram shown is a structural schematic of the data acquisition device viewed from below.

[0030] Figure 4 for Figure 3 A magnified view of a section at point B in the middle;

[0031] Figure 5 for Figure 1 The exploded view of the data acquisition device shown;

[0032] Figure 6 for Figure 5 A magnified view of a section at point C;

[0033] Figure 7 This is a schematic diagram of the structure of the plasmid provided in Embodiment 1 of this application;

[0034] Figure 8 This is a schematic diagram of the structure of the data acquisition device and end plate in the battery provided in Embodiment 2 of this application;

[0035] Figure 9 for Figure 8 A magnified view of a section at point D.

[0036] Figure label:

[0037] 1. Insulating component; 11. Hole position; 12. Clearance hole; 13. First groove; 14. Clearance groove; 15. First chamfer structure; 16. Second chamfer structure; 17. Positioning hole;

[0038] 2. Acquisition component; 21. Acquisition body; 211. Fixing part; 212. Protrusion; 2121. First extension; 2122. Second extension; 22. Acquisition foot;

[0039] 3. Bracket; 31. First connecting part; 32. Bending part; 33. Second connecting part; 34. First chamfer; 35. Second chamfer; 36. First riveting area; 37. Second riveting area;

[0040] 4. Reinforcing plate; 5. Connector; 6. End plate; 61. Positioning protrusion; 62. Second groove; 7. Foam. Detailed Implementation

[0041] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0042] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0043] It should be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0044] Furthermore, 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 one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0045] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0046] Example 1

[0047] Please refer to the following: Figures 1 to 6This utility model provides a data acquisition device for collecting the temperature and / or voltage of a battery cell. The device mainly includes an insulating component 1, a data acquisition component 2, and multiple electrodes 3. The insulating component 1 is located on the side of the battery cell with electrodes (which can be understood as the battery cell being located at the bottom of the insulating component 1). The data acquisition component 2 and the multiple electrodes 3 are located on the same side of the insulating component 1 away from the battery cell (which can be understood as the data acquisition component 2 and the multiple electrodes 3 being located at the top of the insulating component 1). Preferably, the data acquisition component 2 and the multiple electrodes 3 are pre-fixed to the top of the insulating component 1 to ensure that the data acquisition component 2 and the multiple electrodes 3 will not shake or fall off relative to the insulating component 1 during transportation. The fixing method can be riveting or gluing, etc. In this device, the insulating component 1 has holes 11 that penetrate the entire insulating component 1 at the positions corresponding to each of the battery packs 3. At least a portion of the battery packs 3 are exposed through these holes 11 and used to connect with the electrodes of the battery cell. The battery pack 3 is also known in the art as a busbar or busbar piece. The battery pack 3 serves to connect two adjacent battery cells in series or in parallel. By using multiple battery packs 3, multiple battery cells can be connected in series to form a high-capacity battery module.

[0048] The acquisition component 2 specifically includes an acquisition body 21 and multiple acquisition pins 22 connected to both sides of the acquisition body 21 along the Y direction. The acquisition body 21 can be a low-cost wire harness or a flexible printed circuit board (FPC) with a small footprint. Each acquisition pin 22 is welded to a corresponding electrode plate 3, so that the electrodes of each cell can be acquired by the corresponding acquisition pin 22 and finally led to the external battery management system through the conductive lines inside the acquisition body 21. This allows the external battery management system to acquire data information (such as voltage data, current data, or temperature data) of each cell. In fact, the insulating component 1 acts as a separator in this field. The insulating component 1 can separate the acquisition body 21 from the top surface of multiple cells to avoid direct contact between the conductive lines inside the acquisition body 21 and the surface of the cells, reducing the risk of short circuit and improving battery safety. Usually, a nickel sheet with good conductivity is pre-welded to the acquisition pin 22. The connection between the acquisition pin 22 and the corresponding electrode plate 3 is achieved by welding the nickel sheet to the electrode plate 3, which improves the welding strength of the acquisition pin 22 to the corresponding electrode plate 3. Preferably, such as Figure 1 or Figure 5 As shown, the insulating component 1 in this embodiment is used to support two collecting components 2 at the same time, so as to simplify the amount of materials and improve the assembly efficiency of the collecting device.

[0049] Please refer to them again. Figures 1 to 6In this embodiment, each sampling foot 22 is connected to its corresponding bar plate 3 on the side facing the insulating member 1 (which can be understood as each sampling foot 22 being welded to the bottom surface of the corresponding bar plate 3). At the same time, the insulating member 1 is provided with a clearance hole 12 at the bottom of each bar plate 3 for accommodating the sampling foot 22. With this design, on the one hand, the sampling foot 22 will not occupy the space at the top of the bar plate 3, thereby reducing the space occupied by the sampling device in the height direction, which is conducive to improving the space utilization of the battery and increasing the energy density of the battery. On the other hand, by avoiding the sampling foot 22 through the clearance hole 12, the sampling foot 22 connected to the bottom surface of the bar plate 3 will not cause the bar plate 3 to bulge upward on the insulating member 1, that is, it will not cause the bar plate 3 to be placed unevenly on the insulating member 1, thus ensuring the stability of the bar plate 3 installed on the insulating member 1. On the other hand, for batteries with high integration requirements, a layer of insulating tape is usually directly adhered to the top surface of the battery pack 3 instead of the traditional insulating separator. Based on this requirement, when this structure is adopted, during later maintenance requiring the removal of the insulating tape from the top surface of the battery pack 3, the tape will not pull on the individual sensor pins 22 during the removal process. This eliminates the problem of the sensor pins 22 being peeled off by the insulating tape, leading to loosening or even separation of the sensor pins 22 from the battery pack 3. Furthermore, by designing the sensor pins 22 on the bottom surface of the battery pack 3, the sleeve will not press against the sensor pins 22 when the battery pack 3 is subsequently pressed against the top surface of the battery pack 3 and the electrodes of the battery pack 3 and the underlying cell are welded together. In other words, the sensor pins 22 will not obstruct the sleeve from pressing against the top surface of the battery pack 3, thereby improving the reliability of the welding between the battery pack 3 and the corresponding cell, and also reducing the risk of the sensor pins 22 being damaged by the sleeve during the connection process between the battery pack 3 and the cell.

[0050] Please refer to the following: Figures 1 to 4 In this embodiment, all clearance holes 12 preferably penetrate the insulating member 1 in the Z direction, so that multiple sampling pins 22 are exposed on the side of the insulating member 1 facing the battery cell through the clearance holes 12 (which can be understood as the bottom surface of the insulating member 1 exposing multiple sampling pins 22). With this design, on the one hand, it can be ensured that each clearance hole 12 has enough space to accommodate the corresponding sampling pin 22, that is, to ensure that each bar plate 3 will not bulge upward on the insulating member 1. On the other hand, the design of the bottom surface of the insulating member 1 exposing the sampling pins 22 also makes it easy to observe whether each sampling pin 22 and the corresponding bar plate 3 are reliably welded.

[0051] Please refer to the following: Figure 1 , Figure 2 , Figure 5 and Figure 6The insulating component 1 has multiple first grooves 13 on the side facing the sensor 3 (which can be understood as the top surface of the insulating component 1). Each sensor 3 is housed in a corresponding first groove 13. By setting the first grooves 13, multiple sensors 3 can be embedded downwards into the insulating component 1, thereby further reducing the space occupied by the collection device in the height direction, which is beneficial to further improving the space utilization rate and energy density of the battery. The bottom of each first groove 13 has the aforementioned holes 11 and clearance holes 12.

[0052] Please refer to the following: Figure 1 , Figure 2 and Figures 5 to 7 The battery pack 3 specifically includes a first connecting part 31, a bending part 32, and a second connecting part 33 connected in sequence. Each first groove 13 has two holes 11. Parts of the first connecting part 31 and part of the second connecting part 33 are exposed through the corresponding holes 11 and connected to the electrodes of two adjacent battery cells. The first connecting part 31 is used to connect to the electrode of the first battery cell, and the second connecting part 33 is used to connect to the electrode of the second battery cell, so as to connect the first battery cell and the second battery cell in series or in parallel. The bending part 32 has a certain deformation capability. When the two battery cells connected to the battery pack 3 expand, because the bending part 32 can deform, each battery pack 3 can still maintain a reliable connection with the corresponding two battery cells, so as to improve the safety of the battery. The collecting foot 22 on the collecting component 2 can be connected to the side of the first connecting part 31 facing the first groove 13 (which can be understood as the collecting component 2 being connected to the bottom surface of the first connecting part 31), or the collecting foot 22 on the collecting component 2 can also be connected to the side of the second connecting part 33 facing the first groove 13 (which can be understood as the collecting component 2 being connected to the bottom surface of the second connecting part 33). More specifically, the bottom of the first groove 13 is also provided with a relief groove 14. The bent part 32 protrudes downward in the Z direction relative to the first connecting part 31 or the second connecting part 33 and is housed in the relief groove 14. With this design, the bent part 32 will not occupy the top space, thereby improving the reliability of the connection between the battery 3 and the corresponding two battery cells while ensuring that the collecting device does not occupy too much space in the height direction.

[0053] To improve the accuracy of the mounting position of the strip 3 on the insulating component 1, this solution incorporates a foolproof design. Specifically, the first connecting part 31 is provided with a first chamfer 34, the second connecting part 33 is provided with a second chamfer 35, the sidewall of the first groove 13 is provided with a first chamfer structure 15 at the position corresponding to the first chamfer 34, and the sidewall of the first groove 13 is provided with a second chamfer structure 16 at the position corresponding to the second chamfer 35. By providing two chamfers on both the strip 3 and the insulating component 1, the mounting posture of the strip 3 is restricted. The strip 3 can only be accommodated in two postures within the first groove 13, one of which is the correct mounting posture (i.e., the first chamfer 34 and the first chamfer structure 15 correspond, and the second chamfer 35 and the second chamfer structure 16 correspond). Correspondingly, at this time, the bent portion 32 on the bar sheet 3 will face downwards. Another incorrect installation posture is (i.e., the first chamfer 34 corresponds to the second chamfer structure 16, and the second chamfer 35 corresponds to the first chamfer structure 15, at which time the bent portion 32 on the bar sheet 3 will face upwards and occupy the height space). In order to eliminate the incorrect installation posture of the bar sheet 3 installed in the first groove 13, this embodiment also provides a first riveting area 36 on the first connecting portion 31 and a second riveting area 37 on the second connecting portion 33, and designs the first riveting area 36 and the second riveting area 37 as an asymmetrical structure. In other words, only when the bar sheet 3 is placed in the first groove 13 in the correct posture can the bar sheet 3 be riveted together with the insulating member 1.

[0054] Please refer to the following: Figure 1 and Figure 2The main body 21 specifically includes a fixed part 211 and a protruding part 212 connected together. The fixed part 211 is fixed to the side of the insulating member 1 away from the battery cell by riveting (it can be understood that the fixed part 211 is fixed to the top surface of the insulating member 1). The protruding part 212 is connected to the fixed part 211 along the Z direction and extends outward from the insulating member 1 along the X direction. The protruding part 212 specifically includes a first extension 2121 and a second extension 2122 connected at an angle. One end of the first extension 2121 extends along the Z direction. The first extension 2122 is connected to the fixed part 211 and bends downward relative to the fixed part 211. The second extension 2122 is connected to the other end of the first extension 2121 along the X direction and extends horizontally, ultimately forming a Z-shaped extension structure relative to the fixed part 211. This design allows for a more intuitive judgment of whether the collecting component 2 is correctly assembled on the insulating part 1. When the collecting component 2 is installed backwards, the protrusion 212 will bulge upwards, allowing the operator to intuitively determine that the collecting component 2 is installed incorrectly. In addition, the collecting device also includes a reinforcing plate 4 fixed to the bottom of the second extension 2122 and a connector 5 fixed to the top of the second extension 2122. Through the above design of the collecting body 21, the connector 5 can be fixed in a lower position, that is, the connector 5 will not occupy the space at the top of the collecting device, thereby improving the space utilization and energy density of the battery. The reinforcing plate 4 is used to improve the rigidity of the acquisition body 21 at the second extension 2122, so that the connector 5 can be firmly located at the second extension 2122 and maintain the reliability of the electrical connection with the acquisition body 21. The connector 5 is used to connect to the external battery management system, so that the battery management system can collect data information of each cell by inserting the connecting wire into the connector 5.

[0055] Example 2

[0056] This embodiment provides a battery, which mainly includes a battery module and the acquisition device described in Embodiment 1. The battery module includes multiple cells arranged in an array along the X-direction. The electrodes of each cell pass through corresponding holes 11 and are connected to corresponding contact plates 3, allowing multiple cells to be connected in series or parallel via contact plates 3 to form a battery module with a large capacity. An insulating component 1 within the acquisition device separates the acquisition body 21 and the top surface of the cells along the Z-direction, preventing direct contact between the conductive lines inside the acquisition body 21 and the surface of the cells, thereby reducing the risk of short circuits. Since this embodiment uses the acquisition device from Embodiment 1, it also has the advantages of high space utilization and high energy density.

[0057] Please refer to the following: Figure 1 , Figure 2 , Figure 8 and Figure 9The battery in this embodiment also includes an end plate 6. The end plate 6 is disposed along the Z direction on the side of the insulating member 1 facing the battery cell (which can be understood as the end plate 6 being disposed below the insulating member 1) and located on the side of the battery module along the X direction. The end plate 6 is used to limit the position of the battery module. The end plate 6 is provided with a positioning protrusion 61 along the Z direction facing the insulating member 1 (which can be understood as the top of the end plate 6). The outer edge of the insulating member 1 is provided with a positioning hole 17. During installation, the positioning protrusion 61 is inserted into the positioning hole 17 to position the acquisition device and ensure that each subsequent electrode 3 and the electrode are positioned correctly. To ensure the accuracy of the electrode welding of the battery cells, the protrusion 212 on the acquisition component 2 is arranged adjacent to the end plate 6 and located on the outside of the end plate 6. A second groove 62 is provided on the outer side of the end plate 6 at the position corresponding to the first extension 2121 of the protrusion 212. Foam 7 is provided inside the second groove 62. By providing foam 7 inside the protrusion 212, friction between the protrusion 212 and the end plate 6 can be prevented during the connection of the external connecting wires to the connector 5, thereby preventing wear on the protrusion 212 and ensuring the reliability of the data acquisition from each battery cell by the acquisition component 2. Alternatively, the acquisition component 2, foam 7, and reinforcing plate 4 can be pre-assembled into a single unit, which can reduce assembly errors and save costs.

[0058] The above are merely preferred embodiments of the present utility model, and only specifically describe the technical principles of the present utility model. These descriptions are only for explaining the principles of the present utility model and should not be construed as limiting the scope of protection of the present utility model in any way. Based on this explanation, any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model, as well as other specific embodiments of the present utility model that can be conceived by those skilled in the art without creative effort, should be included within the scope of protection of the present utility model.

Claims

1. A data acquisition device for acquiring the temperature and / or voltage of a battery cell, characterized in that, Includes an insulating component (1), a collecting component (2), and multiple pads (3); The insulating component (1) is located on the side of the battery cell with electrodes. The collecting component (2) and the multiple electrodes (3) are located on the same side of the insulating component (1) away from the battery cell. The insulating component (1) has through holes (11) at the positions corresponding to each electrode (3). Some of the electrodes (3) are exposed through the holes (11) and connected to the electrodes of the battery cell so that two adjacent batteries are connected in series or in parallel. The collecting device (2) includes a collecting body (21) and a plurality of collecting feet (22) connected to both sides of the collecting body (21) along the Y direction. Each collecting foot (22) is connected to a corresponding plate (3) facing the side of the insulating member (1). The insulating member (1) has a plurality of clearance holes (12) for receiving the collecting feet (22).

2. The data acquisition device as described in claim 1, characterized in that, All of the clearance holes (12) penetrate the insulator (1) along the Z direction, and the acquisition foot (22) is exposed through the clearance holes (12) on the side of the insulator (1) facing the cell.

3. The data acquisition device as described in claim 2, characterized in that, The insulating member (1) has a plurality of first grooves (13) on the side facing the bar piece (3). Each first groove (13) is used to accommodate a corresponding bar piece (3). The bottom of each first groove (13) is provided with the hole (11) and the clearance hole (12).

4. The data acquisition device as described in claim 3, characterized in that, The bar sheet (3) includes a first connecting part (31), a bending part (32) and a second connecting part (33) connected in sequence. Two holes (11) are provided in each of the first grooves (13), and a portion of the first connecting part (31) and a portion of the second connecting part (33) are exposed through the holes (11) and connected to the electrodes of the two adjacent cells. The collecting foot (22) is connected to the side of the first connecting part (31) or the second connecting part (33) facing the first groove (13); The bottom of the first groove (13) is also provided with a relief groove (14), and the bent part (32) protrudes downward along the Z direction relative to the first connecting part (31) or the second connecting part (33) and is housed in the relief groove (14).

5. The data acquisition device as described in claim 4, characterized in that, The first connecting part (31) and the second connecting part (33) are respectively provided with a first chamfer (34) and a second chamfer (35). The side wall of the first groove (13) is provided with a first chamfer structure (15) at the position corresponding to the first chamfer (34), and the side wall of the first groove (13) is provided with a second chamfer structure (16) at the position corresponding to the second chamfer (35). The first connecting part (31) and the second connecting part (33) are respectively provided with a first riveting area (36) and a second riveting area (37). The first riveting area (36) and the second riveting area (37) are asymmetrical structures so that the bar sheet (3) is riveted and fixed to the insulating member (1).

6. The data acquisition device as described in claim 1, characterized in that, The main body (21) includes a fixed part (211) and a protruding part (212) connected together. The fixed part (211) is fixed to the side of the insulating member (1) away from the battery cell. The protruding part (212) is connected to the fixed part (211) in the Z direction and extends outward from the insulating member (1) in the X direction. The protrusion (212) includes a first extension (2121) and a second extension (2122) connected at an angle. One end of the first extension (2121) is connected to the fixing part (211) along the Z direction, and the second extension (2122) is connected to the other end of the first extension (2121) along the X direction, so that the protrusion (212) and the fixing part (211) form a Z-shaped structure.

7. The data acquisition device as described in claim 6, characterized in that, The acquisition device also includes a reinforcing plate (4) and a connector (5) fixed to both sides of the second extension (2122), the connector (5) being electrically connected to the acquisition body (21).

8. A battery comprising a battery module and a collection device according to any one of claims 1 to 7, wherein the battery module comprises a plurality of cells arranged in an array along the X direction, and an insulating member (1) in the collection device separates the collection body (21) and the plurality of cells along the Z direction, wherein the electrodes of the cells pass through the corresponding holes (11) and are connected to the corresponding plates (3).

9. The battery as claimed in claim 8, characterized in that, The battery also includes an end plate (6), which is disposed along the Z direction on the side of the insulating member (1) facing the cell and located on the side of the battery module along the X direction. The end plate (6) is used to limit the position of the battery module.

10. The battery as claimed in claim 9, characterized in that, The battery includes the acquisition device as described in claim 6. The end plate (6) is provided with a positioning protrusion (61) on one side of the insulating member (1) along the Z direction. The outer edge of the insulating member (1) is provided with a positioning hole (17) that engages with the positioning protrusion (61). The protrusion (212) is located on the outside of the end plate (6). The outer side of the end plate (6) is provided with a second groove (62) at the position corresponding to the first extension (2121) of the protrusion (212). Foam (7) is provided in the second groove (62).

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