Battery pack

Abstract

The application relates to the battery technical field and discloses a battery pack, which comprises battery monomers, a busbar, an information acquisition plate, a glue body and a first glue blocking piece. The busbar is arranged on one side of the battery monomers along a third direction; the information acquisition plate is arranged on one side of the battery monomers along the third direction and located on one side of the busbar along a first direction; the information acquisition plate comprises a terminal part, and the terminal part is electrically connected with the busbar; the glue body is located on one side of the information acquisition plate away from the battery monomers; and the first glue blocking piece is located on one side of the information acquisition plate away from the battery monomers along the third direction and at least partially covers the terminal part. The first glue blocking piece is arranged on one side of the information acquisition plate away from the battery monomers along the third direction, so that the glue body is prevented from wrapping and fixing the terminal part. When the battery monomers swell during the charging and discharging cycle or the working process, the terminal part can deform along with the swelling of the battery monomers, so that the connection between the terminal part and the information acquisition plate is prevented from being broken, and the normal working of a CCS assembly is ensured.

Description

Technical Field

[0001] This application relates to the field of battery technology, specifically to a battery pack. Background Technology

[0002] The CCS (Combined Busbar) in a battery pack is typically located between the individual battery cells and the cover plate. The CCS includes a busbar and an information acquisition board. The busbar is electrically connected to the terminals of the individual battery cells, while the information acquisition board is electrically connected to the busbar through its acquisition terminals to collect relevant data such as temperature and voltage of the individual battery cells in the battery pack.

[0003] To improve the overall strength and modal performance of the battery pack, related technologies commonly fill the area where the individual battery cells are located with colloid. However, the colloid filling will wrap around and fix the acquisition terminals on the data acquisition board. When the individual battery cells expand during charge-discharge cycles or operation, the expansion force will be transmitted to the data acquisition board through the fixed acquisition terminals, which can easily cause the connection between the acquisition terminals and the data acquisition board to break, resulting in data acquisition failure. Utility Model Content

[0004] In view of this, this application provides a battery pack to solve the problem that when the battery cell expands during charge-discharge cycles or operation after filling the area where the battery cell is located with colloid, the connection between the acquisition terminal and the information acquisition board is prone to breakage.

[0005] In a first aspect, this application provides a battery pack having a first direction and a third direction perpendicular to each other. The battery pack includes a battery cell, a busbar, an adhesive, an information acquisition board, and a first blocking adhesive member. The busbar is disposed on one side of the battery cell along the third direction; the information acquisition board is disposed on one side of the battery cell along the third direction and located on one side of the busbar along the first direction, the information acquisition board including a terminal portion electrically connected to the busbar; the adhesive is at least partially located on the side of the information acquisition board opposite to the battery cell; the first blocking adhesive member is located on the side of the information acquisition board along the third direction opposite to the battery cell and at least partially covers the terminal portion; wherein, the first blocking adhesive member is used to prevent the adhesive from contacting the terminal portion.

[0006] Beneficial effects: A first retaining element is provided on the side of the information acquisition board facing away from the battery cell along a third direction. When the adhesive is filled into the area where the battery cell is located, the first retaining element can prevent the adhesive from contacting the terminal part of the information acquisition board, thus preventing the adhesive from wrapping and fixing the terminal part. When the battery cell expands during charge-discharge cycles or operation, the terminal part can deform along with the expansion of the battery cell, thereby preventing the connection between the terminal part and the information acquisition board from breaking and ensuring the normal operation of the CCS module.

[0007] In one alternative embodiment, the first adhesive-blocking element is a flexible element.

[0008] Beneficial effect: By setting the first baffle as a flexible component, when the terminal part deforms due to the expansion of the battery cell, the first baffle prevents the terminal part from deforming, further avoiding breakage at the connection between the terminal part and the information acquisition board.

[0009] In one optional embodiment, the device further includes an electrical isolation plate and a second baffle. The electrical isolation plate is disposed between the battery cell and the information acquisition board along the third direction. The second baffle is disposed between the terminal portion and the electrical isolation plate. The terminal portion is at least partially sandwiched between the first baffle and the second baffle.

[0010] Beneficial effects: An electrical isolation plate is installed between the battery cell and the information acquisition board to form a physical isolation layer, thereby improving electrical safety. Furthermore, a second adhesive barrier is added between the terminal and the electrical isolation plate. The first and second adhesive barriers work together to clamp the terminal, effectively surrounding it and preventing adhesive from penetrating between the terminal and the electrical isolation plate, thus improving the adhesive-blocking effect on the terminal.

[0011] In one optional embodiment, the busbar includes a body and a contact end connected to each other, the contact end being located on the side of the body facing the information acquisition board along the first direction; the terminal portion is electrically connected to the contact end, and the second baffle is provided with a clearance groove for avoiding the contact end.

[0012] Beneficial effects: By configuring the busbar as a connected body and contact end, the contact end can be positioned on one side of the body. This ensures effective contact between the body and the battery cell, and facilitates connection between the contact end and the terminal section of the information acquisition board. Furthermore, a clearance groove is provided on the second-stage adhesive component, allowing the contact end to be embedded within the recessed space. This prevents the second-stage adhesive component from squeezing the contact end, ensuring that the contact surfaces between the terminal section and the contact end remain uncovered, thus improving the contact effect between the terminal section and the contact end.

[0013] In one alternative embodiment, along the third direction, the electrical isolation plate has a groove at one end facing the terminal portion, and the busbar and the second baffle are both accommodated in the groove.

[0014] Beneficial effects: By setting grooves on the electrical isolation plate, the busbar and the second stop adhesive component are accommodated within the grooves. The sidewalls of the grooves can physically limit the movement of the busbar and the second stop adhesive component. Furthermore, the sidewalls of the grooves can also cooperate with the sidewalls of the second stop adhesive component to further restrict the flow of the adhesive and improve the protection of the terminal portion.

[0015] In one alternative embodiment, along the third direction, the depth of the groove is H1, the thickness of the second baffle is H2, the maximum thickness of the body is H3, and the thickness of the contact end is H4, and satisfying: H2≤H1; and / or, H4≤H3.

[0016] Beneficial effects: By setting the thickness of the second-stage component to be less than the depth of the groove, the second-stage component can be accommodated within the groove. By setting the thickness of the contact end to be less than or equal to the thickness of the main body, the heat transfer function of the contact end can be preserved, and the contact end only needs to pass the small current required for the information acquisition board to operate, with no overcurrent area requirement, thus saving overall busbar material.

[0017] In one optional embodiment, a second direction is further included, wherein the first direction, the second direction, and the third direction are mutually perpendicular; the information acquisition board further includes a main body extending along the second direction, and a plurality of terminal portions are arranged at intervals along the second direction and are all connected to the main body; the colloid is located on the side of the main body away from the battery cell.

[0018] Beneficial effects: Multiple terminal sections are connected to the main body, and the main body supports the multiple terminal sections, enabling the multiple terminal sections to correspond to different battery cells, thereby facilitating the monitoring of multiple battery cells.

[0019] In one optional embodiment, the number of the first adhesive blocking members is set to multiple, the multiple first adhesive blocking members are arranged at intervals along the second direction, and one first adhesive blocking member corresponds to one terminal portion, and each first adhesive blocking member covers its corresponding terminal portion; or, the first adhesive blocking members extend along the second direction and simultaneously cover multiple terminal portions.

[0020] Beneficial effects: When multiple independent first-stage adhesive components are used, the first-stage adhesive components can accurately cover their corresponding terminal portions, preventing contact between the adhesive and the terminal portions, and reducing the amount of material used for the first-stage adhesive components. When an extended first-stage adhesive component is used to cover multiple terminal portions simultaneously, the first-stage adhesive component can effectively prevent contact between the adhesive and the terminal portions, and improve the assembly efficiency of the first-stage adhesive component.

[0021] In one optional embodiment, the terminal portion includes a connecting arm and a acquisition terminal, with the two ends of the connecting arm respectively connected to the main body portion and the acquisition terminal; the acquisition terminal is connected to one end of the busbar away from the battery cell along the third direction, and the first baffle covers the acquisition terminal and at least a portion of the connecting arm.

[0022] Beneficial effects: The two ends of the connecting arm connect to the main body and the acquisition terminal respectively, allowing a flexible connection structure to be bent between the acquisition terminal and the main body, thus enabling the connecting arm to deform when the battery cell expands. Furthermore, the first adhesive layer covers the acquisition terminal and at least part of the connecting arm, not only preventing direct contact between the adhesive and the acquisition terminal surface, but also preventing the adhesive from seeping into the connection between the connecting arm and the acquisition terminal by covering the area of ​​the connecting arm near the acquisition terminal. This allows the connection area between the acquisition terminal and the connecting arm to move freely, thereby preventing the connection area between the acquisition terminal and the connecting arm from breaking when the battery cell expands.

[0023] In one alternative embodiment, the connecting arm is flush with the edge of the main body on one side along the first direction; the length direction of the acquisition terminal extends along the second direction.

[0024] Beneficial effects: By setting the connecting arm flush with the edge of the main body, the area occupied by the information acquisition board in the first direction is reduced, and the acquisition terminal extends along the second direction, which can also reduce the area occupied by the information acquisition board in the first direction, making the overall structure of the information acquisition board more compact. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram showing the positional relationship between the battery pack and the busbar in an embodiment of this application; Figure 2 This is a schematic diagram showing the positional relationship between the information acquisition board and the first baffle in an embodiment of this application; Figure 3 This is a schematic diagram showing the positional relationship between the first adhesive-blocking component and the terminal portion in an embodiment of this application; Figure 4 This is an exploded view showing the positional relationship between the first and second adhesive blocking components and the terminal portion in an embodiment of this application. Figure 5 This is a schematic diagram illustrating a specific arrangement of the first adhesive-blocking component according to an embodiment of this application; Figure 6 This is a schematic diagram illustrating another specific arrangement of the first adhesive blocking component according to an embodiment of this application; Figure 7 This is a schematic diagram illustrating a specific arrangement of the groove, the second baffle, and the contact end in an embodiment of this application. Figure 8 This is a schematic diagram showing the thickness relationship between the body and the contact end in an embodiment of this application; Figure 9 This is a schematic diagram illustrating another specific arrangement of the groove, the second baffle, and the contact end in an embodiment of this application. Explanation of reference numerals in the attached figures: X, first direction; Y, second direction; Z, third direction; 10. Battery pack; 100. Individual battery cell; 200. Gel; 1. Busbar; 101. Body; 102. Contact terminal; 2. Information acquisition board; 201. Terminal section; 2011. Connecting arm; 2012. Acquisition terminal; 202. Main body; 3. First barrier; 4. Electrical isolation plate; 5. Second barrier; 6. Groove; 7. Clearance groove. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0028] The following is combined Figures 1 to 9 This describes an embodiment of the present application.

[0029] According to an embodiment of this application, a first aspect provides a battery pack having a first direction X, a second direction Y, and a third direction Z perpendicular to each other. The battery pack includes a battery cell 100, a busbar 1, an information acquisition board 2, a gel 200, and a first blocking member 3. The busbar 1 is disposed on one side of the battery cell 100 along the third direction Z; the information acquisition board 2 is disposed on one side of the battery cell 100 along the third direction Z and located on one side of the busbar 1 along the first direction X. The information acquisition board 2 includes a terminal portion 201, which is electrically connected to the busbar 1. The gel 200 is at least partially located on the side of the information acquisition board 2 away from the battery cell 100. The first blocking member 3 is located on the side of the information acquisition board 2 along the third direction Z away from the battery cell 100 and at least partially covers the terminal portion 201; wherein, the first blocking member 3 is used to prevent the gel 200 from contacting the terminal portion 201.

[0030] First, it should be noted that, as Figure 1 , Figure 2As shown, in this embodiment, the first direction X can be the width direction of the battery pack, the second direction Y can be the length direction of the battery pack, and the third direction Z can be the height direction or thickness direction of the battery pack. Of course, those skilled in the art can adjust the specific directions referred to by the first direction X, the second direction Y, and the third direction Z according to actual needs.

[0031] The battery pack contains multiple battery groups 10 arranged along a first direction X. Each battery group 10 includes multiple battery cells 100 arranged along a second direction Y. The battery cells 100 are the basic energy storage units of the battery pack, and can be prismatic or cylindrical. A busbar 1 covers the end face of the battery cell 100 along a third direction Z, and the busbar 1 and the battery cell 100 are electrically connected. An information acquisition board 2 is disposed on one side of the busbar 1 along the first direction X, and the information acquisition board 2 is electrically connected to the busbar 1 through a terminal portion 201.

[0032] In this embodiment, as Figure 1 , Figure 2 As shown, the first baffle 3 is attached to the surface of the information acquisition board 2 away from the battery cell 100 along the third direction Z. During the filling process of the adhesive 200, the first baffle 3 forms an isolation structure. When the adhesive 200 is injected into the back side of the information acquisition board 2, the first baffle 3 can isolate the adhesive 200, making it difficult for the adhesive 200 to wet the terminal portion 201. Therefore, when the battery cell 100 expands subsequently, the terminal portion 201, which is not fixed by the adhesive 200, can deform along with the expansion of the battery cell 100. For example, under the influence of the battery cell 100, the terminal portion 201 can undergo a slight displacement along the first direction X, the second direction Y, or the third direction Z, thereby preventing the connection between the terminal portion 201 and the information acquisition board 2 from breaking and ensuring the normal operation of the CCS module.

[0033] In one embodiment, the first sealing element 3 is a flexible element.

[0034] In this embodiment, when the first blocking adhesive element 3 covers the surface of the terminal portion 201, its compressibility, due to its flexible nature, allows it to effectively adhere to the terminal portion 201. Furthermore, during the filling of the adhesive 200, the first blocking adhesive element 3 absorbs the pressure applied by the adhesive 200 through its own deformation, thereby preventing the adhesive 200 from penetrating into the connection area between the terminal portion 201 and the busbar 1. During the expansion of the battery cell 100, the first blocking adhesive element 3 undergoes elastic deformation following the displacement of the terminal portion 201, avoiding constraint on the terminal portion 201 while maintaining its blocking effect on the adhesive 200.

[0035] Optionally, the first retaining element 3 can be made of foamed polymer materials such as silicone, rubber, or foam. Such materials can deform under pressure and return to their original shape when the pressure is released, thereby enabling the first retaining element 3 to adapt to the displacement caused by the expansion of the battery cell 100.

[0036] In one embodiment, an electrical isolation plate 4 is further included. The electrical isolation plate 4 is disposed between the battery cell 100 and the information acquisition board 2 along the third direction Z. A second baffle 5 is disposed between the terminal portion 201 and the electrical isolation plate 4. The terminal portion 201 is at least partially sandwiched between the first baffle 3 and the second baffle 5.

[0037] In this embodiment, as Figure 3 As shown, an electrical isolation plate 4 is disposed between the battery cell 100 and the information acquisition board 2, and the electrical isolation plate 4 is used as an insulating material to achieve electrical isolation between the battery cell 100 and the information acquisition board 2. The electrical isolation plate 4 may be provided with a groove 6 for accommodating the busbar 1 and the second baffle 5. When the information acquisition board 2 is assembled on the electrical isolation plate 4, the end face of the terminal portion 201 near the battery cell 100 is supported by the second baffle 5, and the end face of the terminal portion 201 away from the battery cell 100 is covered by the first baffle 3, thereby forming a two-way seal on both sides of the terminal portion 201. During the filling process of the colloid 200, the liquid colloid 200 is restricted to the outside of the baffle member formed by the first baffle 3, the electrical isolation plate 4 and the second baffle 5, so that the colloid 200 is not easy to contact the terminal portion 201.

[0038] Furthermore, a second retaining element 5 is provided on the side of the terminal portion 201 that is close to the battery cell 100 along the third direction Z. The second retaining element 5 is also preferably a flexible element, so that the terminal portion 201 can move in the direction toward the battery cell 100, thereby preventing the connection between the terminal portion 201 and the information acquisition board 2 from breaking and ensuring the normal operation of the CCS component.

[0039] Optionally, the material of the second part 5 can be the same as that of the first part 3. For example, the second part 5 can be made of foamed polymer materials such as silicone, rubber or foam.

[0040] In one embodiment, the busbar 1 includes a body 101 and a contact end 102 connected to each other. The contact end 102 is located on the side of the body 101 facing the information acquisition board 2 along the first direction X. The terminal portion 201 is electrically connected to the contact end 102. The second baffle 5 is provided with a relief groove 7, which is used to avoid the contact end 102.

[0041] In this embodiment, as Figure 3 , Figure 4As shown, the main body 101 of the busbar 1 contacts the end face of the battery cell 100 along the third direction Z. The contact end 102 extends laterally from the main body 101 to the area where the information acquisition board 2 is located. The terminal portion 201 can be electrically connected to the contact end 102 by welding, bonding, or other methods. By configuring the busbar 1 with a connected main body 101 and contact end 102, the contact end 102 can be located on one side of the main body 101. This ensures effective contact between the main body 101 and the battery cell 100, and also facilitates the connection between the contact end 102 and the terminal portion 201 of the information acquisition board 2. At the same time, the separate configuration of the main body 101 and the contact end 102 allows the main body 101 to maintain sufficient thickness to meet current carrying requirements, and the contact end 102 can be designed with a corresponding shape according to actual needs.

[0042] When installing the busbar 1, in order to prevent the second baffle 5 from interfering with the contact end 102, a relief groove 7 is provided on the second baffle 5. The side wall contour structure size of the relief groove 7 is preferably adapted to the outer contour structure size of the contact end 102, so that the contact end 102 is embedded in the space formed by the relief groove 7, avoiding the second baffle 5 from squeezing the contact end 102, ensuring that the mutual contact surface between the terminal part 201 and the contact end 102 remains uncovered, and improving the contact effect between the terminal part 201 and the contact end 102.

[0043] In one embodiment, in order to facilitate the installation of the busbar 1 and the second baffle 5, a groove 6 is provided at one end of the electrical isolation plate 4 facing the terminal portion 201 along the third direction Z, and the busbar 1 and the second baffle 5 are both accommodated in the groove 6.

[0044] In this embodiment, as Figure 4 As shown, a groove 6 is formed on the end face of the electrical isolation plate 4 facing the terminal portion 201 along the third direction Z, that is, on the end face of the electrical isolation plate 4 away from the battery cell 100. The depth direction of the groove 6 is consistent with the extension direction of the third direction Z. By providing the groove 6 on the electrical isolation plate 4, the busbar 1 and the second stop adhesive component 5 are accommodated in the groove 6. The sidewall of the groove 6 can physically limit the busbar 1 and the second stop adhesive component 5. The sidewall of the groove 6 can also cooperate with the sidewall of the second stop adhesive component 5 to further restrict the flow of adhesive and improve the protection effect on the terminal portion 201.

[0045] Furthermore, the contact end 102 of the busbar 1 is located inside the groove 6, and the terminal portion 201 of the information acquisition board 2 is located outside the groove 6. The contact end 102 and the terminal portion 201 are positioned at different heights along the third direction Z, which facilitates the connection between the terminal portion 201 and the contact end 102.

[0046] In one embodiment, along the third direction Z, the depth of the groove 6 is H1, the thickness of the second baffle 5 is H2, the maximum thickness of the body 101 is H3, and the thickness of the contact end 102 is H4, and satisfying: H2≤H1; and / or H4≤H3.

[0047] In this embodiment, H1 refers to the maximum accommodating depth of the groove 6 along the third direction Z, H2 refers to the vertical dimension of the second baffle 5 in the third direction Z, H3 refers to the maximum thickness of the body 101 of the busbar 1 in the third direction Z, and H4 refers to the thickness of the contact end 102 of the busbar 1 in the third direction Z.

[0048] like Figure 7 As shown, by setting H2≤H1, the second retaining element 5 can be accommodated within the groove 6. Figure 8 As shown, by setting H4≤H3, that is, the thickness of the contact end 102 is less than or equal to the thickness of the body 101, the contact end 102 can retain the heat transfer function, and the contact end 102 only needs to pass through the small current required for the information acquisition board 2 to work, without the requirement of overcurrent area, which can save the overall material of the busbar 1.

[0049] Since one end of the terminal portion 201 is connected to the main body portion 202 and the other end is connected to the contact end 102, and the main body portion 202 is disposed outside the groove 6 and the contact end 102 is disposed inside the groove 6, there is a height difference between the two ends of the terminal portion 201.

[0050] In one embodiment, the contact end 102 is completely contained within the groove 6, meaning the thickness H4 of the contact end 102 is smaller than the depth H1 of the groove 6, and H4 ≤ H2 ≤ H1. Figure 7 As shown, by setting H4≤H2≤H1, that is, controlling the thickness of the second baffle 5 between the thickness of the contact end 102 and the depth of the groove 6, when the main body 202 and the contact end 102 are connected to the two ends of the terminal 201 respectively, the second baffle 5 can pad the middle area of ​​the terminal 201, and the height of the padding is between the main body 202 and the contact end 102, so that the two ends of the terminal 201 can smoothly transition and provide support, and avoid the terminal 201 from being easily pulled and damaged.

[0051] In another embodiment, such as Figure 8 , Figure 9As shown, the contact end 102 protrudes slightly after being positioned in the groove 6, meaning the thickness H4 of the contact end 102 is greater than the depth H1 of the groove 6, and H1≤H2≤H4 is satisfied. By setting H1≤H2≤H4, i.e., the depth of the groove 6 is between the thickness of the second retaining element 5 and the thickness of the contact end 102, the second retaining element 5 can pad the middle area of ​​the terminal portion 201, and the height of the padding is between the main body portion 202 and the contact end 102, so that the two ends of the terminal portion 201 transition smoothly and provide support, and also prevent the terminal portion 201 from being easily pulled and damaged.

[0052] In one embodiment, since the battery pack 10 includes multiple battery cells 100, each battery cell 100 is provided with a busbar 1, and each busbar 1 is provided with a terminal portion 201, in order to support the multiple terminal portions 201, the information acquisition board 2 also includes a main body 202, the main body 202 extends along the second direction Y, the multiple terminal portions 201 are arranged at intervals along the second direction Y, and are all connected to the main body 202; the colloid 200 is located on the side of the main body 202 away from the battery cells 100.

[0053] In this embodiment, as Figure 4 As shown, the main body 202 extends along the second direction Y to form a plate-like support structure. Multiple terminal portions 201 are arranged on the main body 202 at predetermined intervals, and each terminal portion 201 maintains an electrical connection with the main body 202. During the filling process of the colloid 200, the colloid 200 is filled on the surface of the main body 202 away from the battery cell 100. Due to the obstruction of the first blocking element 3, the colloid 200 does not easily diffuse beyond the first blocking element 3 towards the terminal portions 201.

[0054] In one embodiment, when multiple terminal portions 201 are provided along the second direction Y, the number of first adhesive blocking members 3 is set to multiple, the multiple first adhesive blocking members 3 are arranged at intervals along the second direction Y, and one first adhesive blocking member 3 corresponds to one terminal portion 201, and each first adhesive blocking member 3 covers its corresponding terminal portion 201.

[0055] In this embodiment, as Figure 6 As shown, multiple independent first blocking adhesive elements 3 are used, each of which corresponds to a specific terminal portion 201. By precisely matching the contour of the terminal portion 201, the adhesive 200 is effectively isolated, and the amount of first blocking adhesive elements 3 used can be reduced. Furthermore, in scenarios where the terminal portions 201 are arranged in an irregular shape with a non-uniform distribution, the independent first blocking adhesive elements 3 can adapt to the layout of terminal portions 201 with different spacing and shapes, effectively isolating and protecting terminal portions 201 at different positions.

[0056] In another embodiment, in addition to being configured as multiple as described above, the first adhesive blocking member 3 can also extend along the second direction Y and simultaneously cover multiple terminal portions 201.

[0057] In this embodiment, as Figure 5 As shown, the first adhesive barrier 3 extends along the second direction Y to form an extended adhesive barrier structure. By continuously covering multiple terminal portions 201, it can eliminate the assembly gap between adjacent first adhesive barriers 3 and improve the isolation and protection effect of the first adhesive barrier 3. For example, when multiple terminal portions 201 are arranged in a straight line at equal intervals, using a single first adhesive barrier 3 can effectively prevent the adhesive 200 from contacting the terminal portion 201 and can improve the assembly efficiency of the first adhesive barrier 3.

[0058] In one embodiment, the terminal portion 201 includes a connecting arm 2011 and a data acquisition terminal 2012. The two ends of the connecting arm 2011 are respectively connected to the main body portion 202 and the data acquisition terminal 2012. The data acquisition terminal 2012 is connected to one end of the busbar 1 that is away from the battery cell 100 along the third direction Z, and the first baffle 3 covers the data acquisition terminal 2012 and at least part of the connecting arm 2011.

[0059] In this embodiment, as Figure 4 As shown, when the terminal part 201 includes a connecting arm 2011 and a data acquisition terminal 2012, and the data acquisition terminal 2012 is disposed along the third direction Z at the end of the connecting arm 2011 away from the battery cell 100, the connecting arm 2011 serves as a deformable structure connecting the main body part 202 and the data acquisition terminal 2012. The flexibility of the connecting arm 2011 allows it to bend and deform when the battery cell 100 expands. The data acquisition terminal 2012 and the contact end 102 on the busbar 1 can be connected by welding, bonding, or other means, thereby enabling the transmission of electrical signals from the battery cell 100.

[0060] When the battery cell 100 expands due to charging and discharging, the presence of the connecting arm 2011 allows the acquisition terminal 2012 to shift, for example, by a slight displacement along the first direction X, the second direction Y, or the third direction Z. Furthermore, the first adhesive layer 3 covers the acquisition terminal 2012 and at least part of the connecting arm 2011, not only preventing direct contact between the adhesive 200 and the surface of the acquisition terminal 2012, but also preventing the adhesive 200 from seeping into the connection between the connecting arm 2011 and the acquisition terminal 2012 by covering a portion of the connecting arm 2011 near the acquisition terminal 2012. This allows the connection area between the acquisition terminal 2012 and the connecting arm 2011 to move freely, thereby preventing the connection area between the acquisition terminal 2012 and the connecting arm 2011 from breaking when the battery cell 100 expands.

[0061] In one embodiment, the connecting arm 2011 is flush with the edge of the main body 202 on one side along the first direction X; the length direction of the acquisition terminal 2012 extends along the second direction Y.

[0062] In this embodiment, by setting the connecting arm 2011 to be flush with the edge of the main body 202, the area occupied by the information acquisition board 2 in the first direction X is reduced, and the acquisition terminal 2012 extends along the second direction Y, which can also reduce the area occupied by the information acquisition board 2 in the first direction X, making the overall structure of the information acquisition board 2 more compact.

[0063] Although embodiments of this application have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of this application, and all such modifications and variations fall within the scope defined by the appended claims.

Claims

1. A battery pack, characterized in that, The battery pack includes a first direction (X) and a third direction (Z) that are perpendicular to each other. Battery cell (100); A busbar (1) is disposed on one side of the battery cell (100) along the third direction (Z); An information acquisition board (2) is disposed on one side of the battery cell (100) along the third direction (Z) and located on one side of the busbar (1) along the first direction (X). The information acquisition board (2) includes a terminal part (201) which is electrically connected to the busbar (1). The colloid (200) is at least partially located on the side of the information acquisition board (2) opposite to the battery cell (100); The first baffle (3) is located on the side of the information acquisition board (2) away from the battery cell (100) along the third direction (Z) and at least partially covers the terminal portion (201). The first adhesive barrier (3) is used to prevent the adhesive (200) from contacting the terminal portion (201).

2. The battery pack according to claim 1, characterized in that, The first adhesive-blocking component (3) is a flexible component.

3. The battery pack according to claim 1, characterized in that, It also includes an electrical isolation plate (4) and a second baffle (5); the electrical isolation plate (4) is disposed between the battery cell (100) and the information acquisition board (2) along the third direction (Z), and the second baffle (5) is disposed between the terminal portion (201) and the electrical isolation plate (4), and the terminal portion (201) is at least partially sandwiched between the first baffle (3) and the second baffle (5).

4. The battery pack according to claim 3, characterized in that, The busbar (1) includes a body (101) and a contact end (102) connected to each other. The contact end (102) is located on the side of the body (101) facing the information acquisition board (2) along the first direction (X). The terminal portion (201) is electrically connected to the contact end (102), and the second baffle (5) is provided with a relief groove (7) for avoiding the contact end (102).

5. The battery pack according to claim 4, characterized in that, Along the third direction (Z), the electrical isolation plate (4) is provided with a groove (6) at one end facing the terminal part (201), and the busbar (1) and the second baffle (5) are both accommodated in the groove (6).

6. The battery pack according to claim 5, characterized in that, Along the third direction (Z), the depth of the groove (6) is H1, the thickness of the second baffle (5) is H2, the maximum thickness of the body (101) is H3, and the thickness of the contact end (102) is H4, and the following conditions are met: H2≤H1; and / or, H4≤H3.

7. The battery pack according to claim 1, characterized in that, It also includes a second direction (Y), where the first direction (X), the second direction (Y), and the third direction (Z) are mutually perpendicular; The information acquisition board (2) also includes a main body (202), which extends along the second direction (Y), and a plurality of terminal portions (201) are arranged at intervals along the second direction (Y) and are all connected to the main body (202); the colloid (200) is located on the side of the main body (202) away from the battery cell (100).

8. The battery pack according to claim 7, characterized in that, The number of the first adhesive blocking member (3) is set to multiple, and the multiple first adhesive blocking members (3) are arranged at intervals along the second direction (Y), and one first adhesive blocking member (3) corresponds to one terminal part (201), and each first adhesive blocking member (3) covers the corresponding terminal part (201). Alternatively, the first baffle (3) extends along the second direction (Y) and simultaneously covers a plurality of the terminal portions (201).

9. The battery pack according to claim 7, characterized in that, The terminal part (201) includes a connecting arm (2011) and a data acquisition terminal (2012), with the two ends of the connecting arm (2011) respectively connected to the main body part (202) and the data acquisition terminal (2012). The acquisition terminal (2012) is connected to one end of the busbar (1) away from the battery cell (100) along the third direction (Z), and the first baffle (3) covers the acquisition terminal (2012) and at least part of the connecting arm (2011).

10. The battery pack according to claim 9, characterized in that, The connecting arm (2011) is flush with the edge of the main body (202) on one side along the first direction (X); The length direction of the acquisition terminal (2012) extends along the second direction (Y).

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