Electricity storage device and electric equipment

Abstract

The embodiment of the utility model provides an electricity storage device and electric equipment. The electricity storage device comprises a tab support, a flexible circuit board and a plurality of riveting parts. The tab support comprises a support body. The flexible circuit board is provided with a plurality of positioning holes. The plurality of riveting parts respectively pass through the plurality of positioning holes and are fixedly connected with the support body so as to position the flexible circuit board and the support body. According to the technical scheme provided by the embodiment of the invention, the flexible circuit board can be positioned relative to the tab bracket through the riveting part penetrating through the positioning hole, the positioning precision is good, the positioning strength is relatively high, and meanwhile, automatic positioning is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to an energy storage device and an electrical appliance. Background Technology

[0002] The safety performance of energy storage devices (e.g., batteries) used in electrical equipment such as drones, electric vehicles, and power tools directly determines the safety of the electrical equipment.

[0003] To ensure the safety of electrical equipment, energy storage devices are generally equipped with data acquisition devices that collect signals such as battery voltage, current, and temperature to monitor battery performance in real time and ensure the safety of electrical equipment.

[0004] In related technologies, acquisition devices typically use flexible circuit boards and BMS components for telecommunication connections. However, this approach suffers from issues such as poor positioning accuracy of the flexible circuit boards, which in turn affects the accuracy of signal acquisition. Utility Model Content

[0005] In view of this, the present invention provides an energy storage device and an electrical device, aiming to solve the problem that the poor positioning accuracy of flexible circuit boards affects the accuracy of battery signal acquisition.

[0006] In a first aspect, embodiments of this application provide an energy storage device. The energy storage device includes a tab support, a flexible circuit board, and multiple riveting parts. The tab support includes a support body. The flexible circuit board has multiple positioning holes. The multiple riveting parts pass through the multiple positioning holes and are fixedly connected to the support body.

[0007] In conjunction with the first aspect above, in one possible implementation, the bracket body is provided with multiple riveting holes, and the multiple riveting parts are multiple rivets. The multiple rivets are inserted into the multiple riveting holes respectively to rivet the flexible circuit board to the bracket body; or, the multiple riveting parts are multiple riveting posts integrally formed with the bracket body, each riveting post including a post part and a cap part, the post part passing through a corresponding positioning hole, and the cap part located on the side of the flexible circuit board away from the bracket body.

[0008] In conjunction with the first aspect described above, in one possible implementation, the flexible circuit board includes a first segment, a second segment, and a third segment connected in sequence. The first and third segments are both folded together with the second segment at an angle. A first buffer and a second buffer are respectively provided on opposite sides of the second segment in the thickness direction.

[0009] In conjunction with the first aspect described above, in one possible implementation, the support body is provided with a first boss and a second boss, the first boss and the second boss being spaced apart in a second direction; and the overlapping portion between the first segment and the second segment is at least partially located on the second boss, the overlapping portion between the second segment and the third segment is at least partially located on the first boss, and / or, the second buffer is located on the side of the second segment facing the support body and is located between the first boss and the second boss; and / or, the first buffer and / or the second buffer are foam.

[0010] In conjunction with the first aspect described above, in one possible implementation, the system further includes a circuit board, with one end of the third segment away from the second segment electrically connected to the circuit board, and the third segment having a stepped portion.

[0011] In conjunction with the first aspect above, in one possible implementation, a limiting groove is provided on the support body, and the starting end of the flexible circuit board is at least partially embedded in the limiting groove.

[0012] In conjunction with the first aspect described above, in one possible implementation, the bracket body is provided with a crossbeam extending along a first direction, and multiple riveted parts are respectively fixedly connected to the crossbeam through multiple positioning holes. The electrode bracket includes multiple electrical connection bars formed with the bracket body, and the crossbeam partially covers the multiple electrical connection bars. An adhesive layer is provided on the surface of the crossbeam, the adhesive layer is located between adjacent riveted parts, and a flexible circuit board and the crossbeam are respectively bonded to both sides of the adhesive layer.

[0013] In conjunction with the first aspect described above, in one possible implementation, the system further includes at least one sensing element for sensing cell parameters and a circuit board. The at least one sensing element is connected to the circuit board via a flexible circuit board.

[0014] In conjunction with the first aspect described above, in one possible implementation, the plurality of positioning holes includes a first positioning hole and a second positioning hole, the first positioning hole and the second positioning hole being spaced apart in a first direction. The first positioning hole is a circular hole, and the second positioning hole is an oval hole extending along the first direction.

[0015] Secondly, embodiments of this application provide an electrical device that includes the energy storage device of any of the above embodiments.

[0016] In batteries, the tabs of the battery cell are typically supported by electrical connectors on the tab holder. Flexible circuit boards are glued to the tab holder and are used to electrically connect the sensors corresponding to the tabs to the circuit board to collect signals such as voltage, current and temperature of the battery cell.

[0017] During battery operation, the high temperature of the tab support can cause partial or complete failure of the adhesive between the flexible circuit board and the tab support, resulting in detachment and affecting the accuracy of signal acquisition.

[0018] According to the technical solution of this utility model embodiment, the bracket body is provided with multiple riveting parts, and correspondingly, the flexible circuit board is provided with multiple positioning holes. In this way, the flexible circuit board can be positioned relative to the tab bracket by the riveting parts passing through the positioning holes, resulting in good positioning accuracy and high positioning strength, while also facilitating automated positioning. Furthermore, it can prevent the flexible circuit board from partially or completely detaching from the tab bracket due to adhesive delamination, thus avoiding any impact on the positioning accuracy of the flexible circuit board and consequently preventing any impact on the accuracy of signal acquisition. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the embodiments will be briefly described below. It should be understood that the drawings only show some embodiments of this utility model and should not be considered as a limitation of the scope. It should also be understood that the same or similar reference numerals are used in the drawings to represent the same or similar elements. Furthermore, it should be understood that the drawings are merely schematic, and the dimensions and scale of the elements in the drawings are not necessarily precise.

[0020] Figure 1 This is a partial structural schematic diagram of an energy storage device according to an embodiment of this application.

[0021] Figure 2 This is a schematic diagram of the structure of a flexible circuit board and a sensing element according to an embodiment of this application.

[0022] Figure 3 This is a schematic diagram of the structure of another flexible circuit board and sensing element according to one embodiment of this application.

[0023] Figure 4 This is a schematic diagram of another part of the structure of an energy storage device according to one embodiment of the present application.

[0024] Figure 5 This is a schematic diagram of another part of the structure of an energy storage device according to an embodiment of the present application.

[0025] Figure 6 This is a schematic diagram of the structure of an energy storage device according to an embodiment of this application.

[0026] Figure label:

[0027] 100. Energy storage devices;

[0028] 11. Electrode bracket; 111. Bracket body; 112. Riveting hole; 113. First boss; 114. Second boss; 115. Crossbeam; 116. Electrical connector bar;

[0029] 12. Flexible circuit board; 121. Positioning hole; 121a. First positioning hole; 121b. Second positioning hole; 122. First segment; 123. Second segment; 124. Third segment; 125. Stepped section; 126. Starting end;

[0030] 13. Riveted part; 130. Riveted post; 131. Post part; 132. Cap part;

[0031] 14. First buffer component;

[0032] 15. Second buffer component; 151. First buffer section; 152. Second buffer section;

[0033] 16. Sensor; 17. Circuit board; 18. Fastener; 19. Tab; 20. Housing. Detailed Implementation

[0034] The embodiments of this application will be further described in detail below with reference to the accompanying drawings and examples. The detailed description of the following embodiments and the accompanying drawings are used to illustrate the principles of this application by way of example, but should not be used to limit the scope of this application. This application can be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

[0035] Energy storage devices used in electrical equipment such as drones, electric vehicles, and power tools have their safety performance directly determining the safety of the equipment.

[0036] To ensure the safety of electrical equipment, flexible circuit boards are typically installed in energy storage devices (such as batteries) to collect signals such as battery voltage, current, and temperature, so as to monitor battery performance in real time and ensure the safety of electrical equipment.

[0037] Energy storage devices may include multiple battery cells, tab supports, multiple electrical connectors, flexible circuit boards, and housings. In related technologies, the tabs of the battery cells are typically supported on the tab supports and connected to the electrical connectors. The flexible circuit board is glued to the tab supports and is used to electrically connect sensors corresponding to the tabs to the circuit board to collect signals such as voltage, current, and temperature of the battery cells.

[0038] During battery operation, the high temperature of the tab support can cause partial or complete failure of the adhesive between the flexible circuit board and the tab support, leading to detachment and affecting the accuracy of signal acquisition. Therefore, the positioning accuracy of the flexible circuit board is relatively poor, further impacting the accuracy of signal acquisition.

[0039] To address the aforementioned problems in related technologies, this application provides an energy storage device and an electrical appliance having the same. The following is in conjunction with... Figures 1 to 6 The energy storage device provided in the embodiments of this application will be described.

[0040] It should be understood that there are many ways to implement this application, and it should not be construed as being limited to the embodiments described herein. The embodiments described herein are only for a more thorough and clear understanding of this disclosure.

[0041] Exemplary energy storage device

[0042] For ease of description, the following defines a first direction (X direction in the diagram) and a second direction (Y direction in the diagram). The first direction is the direction in which multiple cells are arranged, and the second direction is perpendicular to the first direction.

[0043] refer to Figure 1 This utility model embodiment provides an energy storage device 100 (e.g., a battery module, a start-stop battery pack, a low-voltage battery pack, a power battery pack, or an energy storage module). The energy storage device 100 includes a tab bracket 11, a flexible circuit board 12, and multiple riveting parts 13. The tab bracket 11 includes a bracket body 111. The flexible circuit board 12 has multiple positioning holes 121. The multiple riveting parts 13 pass through the multiple positioning holes 121 and are fixedly connected to the bracket body 111 to position the flexible circuit board 12 to the bracket body 111.

[0044] For example, the flexible circuit board 12 can be an FPC (flexible printed circuit) or an FFC (flexible flat cable).

[0045] For example, the flexible circuit board 12 is provided with two positioning holes 121, and correspondingly, the number of riveting parts 13 is two. Of course, the number of positioning holes 121 and riveting parts 13 can also be set to other numbers according to the needs of specific application scenarios, such as 3, 4, 5 or 6, etc.

[0046] It should be noted that the riveting part 13 can be integrally formed with the bracket body 111, for example, by integral injection molding, or it can be formed separately.

[0047] According to the technical solution of this utility model embodiment, the bracket body 111 is provided with a plurality of riveting parts 13, and correspondingly, the flexible circuit board 12 is provided with a plurality of positioning holes 121. In this way, the flexible circuit board 12 can be positioned relative to the tab bracket 11 by the riveting parts 13 passing through the positioning holes 121, resulting in good positioning accuracy and high positioning strength, while also facilitating automated positioning. Furthermore, it can prevent the flexible circuit board 12 from partially or completely detaching from the tab bracket 11 due to adhesive delamination, thus avoiding any impact on the positioning accuracy of the flexible circuit board 12 and consequently preventing any impact on the accuracy of signal acquisition.

[0048] For example, the tab holder 11 may also include a plurality of electrical connection bars 116, and the energy storage device 100 may also include a plurality of battery cells.

[0049] For example, the plurality of electrical connection bars 116 may be integrally formed with the support body 111 of the tab holder 11, for example, by integral injection molding. The plurality of electrical connection bars 116 may include a main positive electrical connection bar, a main negative electrical connection bar, and an intermediate electrical connection bar.

[0050] For example, the main positive and negative electrical busbars can be copper busbars, while the intermediate electrical busbars can be aluminum busbars. Copper busbars can be thinner than aluminum busbars, offering better current carrying capacity and heat dissipation. Alternatively, multiple electrical busbars can be made of aluminum, saving costs.

[0051] Each battery cell's tab 19 is supported on the bracket body 111 and electrically connected to the corresponding electrical connection bar 116.

[0052] For example, the energy storage device 100 can be formed by a certain number of battery cells connected in series and / or in parallel, and can provide a certain voltage and capacity to meet the power needs of different applications. For example, the energy storage device 100 can be formed by multiple battery cells connected in series; or, the energy storage device 100 can be formed by multiple battery cells connected in parallel; or, the energy storage device 100 can be formed by several groups of battery cells connected in series, each group of battery cells including multiple battery cells connected in parallel; or, the energy storage device 100 can be formed by several groups of battery cells connected in parallel, each group of battery cells including multiple battery cells connected in series.

[0053] For example, refer to Figure 6 The energy storage device 100 may also include a housing 20.

[0054] Below, for reference Figure 1 One possible implementation of the riveting part 13 will be described. In this implementation, the bracket body 111 is provided with a plurality of riveting holes 112 (not shown in the figure), and the plurality of riveting parts 13 are a plurality of rivets. The plurality of rivets are inserted into the plurality of riveting holes 112 respectively to rivet the flexible circuit board 12 to the tab bracket 11.

[0055] In this way, the flexible circuit board 12 can be positioned relative to the tab bracket 11 through rivets and rivet holes 112, with high positioning accuracy and strength, and at the same time, it is conducive to automated positioning.

[0056] For example, the multiple rivets are multiple expansion rivets, which are respectively inserted into multiple riveting holes 112 to rivet the flexible circuit board 12 to the bracket body 111. This application does not limit the specific structure of the expansion rivets; for example, they can be tree-shaped rivets or expansion rivets including a body and a rivet portion.

[0057] In this way, the flexible circuit board 12 can be positioned relative to the tab bracket 11 by means of expansion rivets and rivet holes 112. The positioning process is relatively simple, the positioning accuracy and strength are high, and it is conducive to automated positioning.

[0058] refer to Figure 4 Another possible implementation of the riveting part 13 will be described. In this implementation, the multiple riveting parts 13 are multiple riveting posts 130 integrally formed with the bracket body 111. Each riveting post 130 includes a post portion 131 and a cap portion 132. The post portion 131 passes through a corresponding positioning hole 121, and the cap portion 132 is located on the side of the flexible circuit board 12 away from the bracket body 111.

[0059] In this way, the post portion 131 of the riveting post, which is integrally formed with the bracket body 111, passes through the riveting hole 112 and is then heat-melted to form a cap portion 132 located on the side of the flexible circuit board 12 away from the tab bracket 11. This positions the flexible circuit board 12 relative to the tab bracket 11, resulting in high positioning accuracy and strength, and is also conducive to automated positioning.

[0060] The following is for reference. Figure 2 The structure of the flexible circuit board 12 is described. For example... Figure 2 As shown, the flexible circuit board 12 may include a first segment 122, a second segment 123, and a third segment 124 connected in sequence. The first segment 122 and the third segment 124 may both be folded over the second segment 123 and arranged at an angle. That is, the first segment 122 transitions to the second segment 123 through folding, and the second segment 123 transitions to the third segment 124 through folding, with an angle between the first segment 122 and the second segment 123, and an angle between the second segment 123 and the third segment 124. For example, the first segment 122 and the third segment 124 extend along a first direction X, and the second segment 123 extends along a second direction Y, with the first direction X perpendicular to the second direction Y.

[0061] It should be noted that this application does not limit the extension direction of the first segment 122, the second segment 123 and the third segment 124, that is, this application does not limit the included angle between the first segment 122 and the second segment 123, and between the second segment 123 and the third segment 124, and can also set other values ​​as needed.

[0062] A first buffer 14 and a second buffer 15 may be respectively provided on opposite sides of the second segment 123 in the thickness direction. For example, in the thickness direction of the second segment 123, the first buffer 14 is located on the upper side of the second segment 123, and the second buffer 15 is located on the lower side of the second segment 123.

[0063] At the location of the second segment 123 of the flexible circuit board 12, a first buffer 14 and a second buffer 15 are respectively provided on opposite sides of the second segment 123 in the thickness direction. These buffers can relatively cushion and support the second segment 123, preventing the flexible circuit board 12 from shaking or being pulled, and improving the overall positioning accuracy of the flexible circuit board 12. At the same time, it can prevent the flexible circuit board 12 from contacting and rubbing against other components of the battery, thus avoiding damage.

[0064] Return to reference Figure 1 The support body 111 is provided with a first boss 113 and a second boss 114. The first boss 113 and the second boss 114 are spaced apart in the second direction Y. The overlapping portion between the first segment 122 and the second segment 123 is at least partially located on the second boss 114, and the overlapping portion between the second segment 123 and the third segment 124 is at least partially located on the first boss 113.

[0065] The first segment 122 of the flexible circuit board 12 passes through the positioning hole 121 on the flexible circuit board 12 via a positioning member, fixing the flexible circuit board 12 to the bracket. The tail of the third segment 124 of the flexible circuit board 12 is connected to the circuit board 17, while the second segment 123 and the overlapping part (i.e., the connection part) between them are in a suspended state, which is prone to sagging and contacting other parts of the energy storage device 100, which may cause a short circuit, or may cause friction and damage to the flexible circuit board 12 during the operation of the electrical equipment. The first boss 113 and the second boss 114 are provided on the bracket to support the connection part and prevent the flexible circuit board 12 from being suspended in this part and sagging, contacting other parts of the tab bracket 11, causing a short circuit, or rubbing against the circuit board 17 and damaging the flexible circuit board 12.

[0066] The second buffer 15 is located on the side of the second segment 123 facing the support body 111, and is situated between the first boss 113 and the second boss 114. This can, to a certain extent, prevent the second buffer 15 from shifting and losing its buffering and positioning function on the second segment 123.

[0067] The second buffer member 15 may have a first end face facing the first boss 113 and a second end face facing the second boss 114. The distance between the first end face and the first boss 113 may be 1 mm to 3 mm.

[0068] The distance between the second end face and the second boss 114 can be 1 mm to 3 mm.

[0069] In one example, the distance between the first end face and the first boss 113 can be 1 mm to 3 mm. The distance between the second end face and the second boss 114 can also be 1 mm to 3 mm.

[0070] In this way, the first and second end faces of the second buffer member 15 are a certain distance away from the first boss 113, which allows for a certain amount of movement while positioning, making it easy to install.

[0071] Of course, the two ends of the second buffer member 15 can also contact the first boss 113 and the second boss 114 respectively.

[0072] refer to Figure 3 and Figure 5The second buffer 15 may include a first buffer portion 151 and a second buffer portion 152. The thickness of the first buffer portion 151 is less than the thickness of the second buffer portion 152. The first buffer portion 151 is located between the fastener 18 and the second segment 123.

[0073] The first buffer portion 151 is disposed between the first boss 113 and the second boss 114 at a position corresponding to the fastener 18, and its thickness is less than that of the second buffer portion 152. The step portion 125 between the first buffer portion 151 and the second buffer portion 152 can accommodate the fastener 18 (e.g., a bolt or screw), isolating the fastener 18 from the flexible circuit board 12, thus better preventing short circuits and wear of the flexible circuit board 12 by the fastener 18. In addition, space can be fully utilized.

[0074] The first buffer 14 and / or the second buffer 15 are made of foam. In this way, while providing positioning and cushioning for the second segment 123, the weight is relatively light, avoiding adding unnecessary weight to the battery.

[0075] Of course, the first buffer 14 and the second buffer 15 can also be made of other materials, such as rubber and sponge.

[0076] Return to reference Figure 1 The bracket body 111 is also provided with a fastener 18, which is located at least partially between the first boss 113 and the second boss 114.

[0077] Between the first boss 113 and the second boss 114, a screw is provided on the edge of the tab bracket 11 to connect the tab bracket 11 to the housing. Direct contact between the screw and the flexible circuit board 12 may cause a short circuit or wear on the flexible circuit board 12. Therefore, the fastener 18 can be partially accommodated between the first boss 113 and the second boss 114, making reasonable use of space and avoiding direct contact between the screw and the flexible circuit board 12, which could cause short circuits or friction damage to the flexible circuit board 12.

[0078] The following is for reference. Figure 2 The following describes the multiple positioning holes 121 on the flexible circuit board 12. The multiple positioning holes 121 include a first positioning hole 121 and a second positioning hole 121. The first positioning hole 121 and the second positioning hole are spaced apart in the first direction X. Of course, other numbers of positioning holes 121 can also be provided as needed.

[0079] For example, the first positioning hole 121 is located at the beginning of the first segment 122, and the second positioning hole 121 is located at the end of the first segment 122. Furthermore, the positions of the first positioning hole 121 and the second positioning hole 121 can be adjusted according to the needs of specific application scenarios.

[0080] The first positioning hole 121 is a round hole, and the second positioning hole 121 is an elongated hole extending along the first direction X, that is, an oval hole.

[0081] The second positioning hole 121 is an elongated hole extending along the first direction X, allowing for a certain amount of process installation allowance. In this way, after one riveting part 13 is inserted into the first positioning hole 121 for positioning, the other riveting part 13 can be adapted to the second positioning hole 121 according to the installation error, avoiding pulling on the flexible circuit board 12 and affecting the signal acquisition accuracy, while also facilitating installation.

[0082] refer to Figure 5 The energy storage device 100 may also include a circuit board 17. The end of the third segment 124 facing away from the second segment 123 is electrically connected to the circuit board 17, and the third segment 124 is provided with a stepped portion 125.

[0083] For example, circuit board 17 may be a BMS board, a control board, or a microcontroller, etc.

[0084] The tail of the third segment 124 of the flexible circuit board 12 is connected to the circuit board 17. A step portion 125 is provided in the third segment 124 of the flexible circuit board 12, which provides a certain process installation allowance. The first segment 122 of the flexible circuit board 12 is fixedly connected to the tab bracket 11. The second segment 123 is positioned by first buffer members 14 and second buffer members 15 on both sides in the thickness direction. The connection between each segment is supported by the first boss 113 and the second boss 114. When the tail of the third segment 124 of the flexible circuit board 12 is connected to the circuit board 17, this process installation allowance can avoid pulling the flexible circuit board 12, which facilitates installation.

[0085] A limiting groove (not shown in the figure) is provided on the bracket body 111, and the starting end 126 of the flexible circuit board 12 is at least partially embedded in the limiting groove. For example, a limiting groove is provided on the bracket body 111 at a position corresponding to the starting end 126 of the flexible circuit board 12, and the limiting groove positions the starting end 126 of the flexible circuit board 12 relative to the bracket body 111.

[0086] In an alternative embodiment, a limiting space formed by limiting blocks may be provided on the support body 111, and the starting end 126 of the flexible circuit board 12 is at least partially embedded in the limiting space. Here, the limiting blocks may be multiple limiting blocks arranged at intervals, or they may be a single limiting block.

[0087] A limiting groove is provided on the bracket body 111 at the position corresponding to the starting end 126 of the flexible circuit board 12. When the flexible circuit board 12 is installed on the tab bracket 11, the starting end 126 of the flexible circuit board 12 can be first positioned by the limiting groove. At the same time, it is beneficial to align and position the first segment 122 of the flexible circuit board 12 relative to the tab bracket 11, thereby further improving the overall positioning accuracy of the flexible circuit board 12.

[0088] refer to Figure 4 The bracket body 111 is provided with a crossbeam 115 extending along the first direction X, and multiple riveting parts 13 pass through multiple positioning holes 121 and are fixedly connected to the crossbeam 115. The tab bracket 11 also includes multiple electrical connection bars 116 integrally formed with the bracket body 111, and the crossbeam 115 partially covers the multiple electrical connection bars 116.

[0089] An adhesive layer is provided on the surface of the crossbeam 115. The adhesive layer is located between adjacent riveting parts 13, and the flexible circuit board 12 and the crossbeam 115 are bonded to both sides of the adhesive layer.

[0090] In this way, while the first section 122 of the flexible circuit board 12 is fixed to the tab bracket 11 through multiple positioning holes 121 via multiple riveting parts 13, the flexible circuit board 12 between adjacent riveting parts 13 is bonded to the crossbeam 115, which can prevent the flexible circuit board 12 between the riveting parts 13 from bulging or sliding, and better improve the positioning accuracy of the flexible circuit board 12.

[0091] Return to reference Figure 1 The energy storage device 100 also includes at least one sensing element 16 for sensing cell parameters, the sensing element 16 being electrically connected between the cell tab 19 and the flexible circuit board 12.

[0092] For example, cell parameters may include at least one of voltage, temperature, pressure, and humidity.

[0093] The following is combined with Figures 1 to 6 The energy storage device 100 of this application will be described in detail.

[0094] The energy storage device 100 includes a tab bracket 11, a flexible circuit board 12, and multiple riveting parts 13. The tab bracket 11 includes a bracket body 111. The flexible circuit board 12 is provided with multiple positioning holes 121. The multiple riveting parts 13 pass through the multiple positioning holes 121 respectively and are fixedly connected to the bracket body 111 to position the flexible circuit board 12 to the bracket body 111.

[0095] The multiple riveting parts 13 are multiple riveting posts integrally formed with the bracket body 111. Each riveting post includes a post part 131 and a cap part 132. The post part 131 passes through the corresponding positioning hole 121, and the cap part 132 is located on the side of the flexible circuit board 12 away from the bracket body 111.

[0096] The flexible circuit board 12 includes a first segment 122, a second segment 123, and a third segment 124 connected in sequence. The first segment 122 and the third segment 124 extend along a first direction X, and the second segment 123 extends along a second direction Y. The first direction X is perpendicular to the second direction Y. A first buffer 14 and a second buffer 15 are respectively provided on opposite sides of the second segment 123 in the thickness direction.

[0097] The bracket body 111 is provided with a first boss 113 and a second boss 114. The first boss 113 and the second boss 114 are spaced apart in the second direction Y. The overlapping portion between the first segment 122 and the second segment 123 is at least partially located on the second boss 114, and the overlapping portion between the second segment 123 and the third segment 124 is at least partially located on the first boss 113.

[0098] The second buffer member is located on the side of the second segment 123 facing the support body 111, and is situated between the first boss 113 and the second boss 114. The second buffer member has a first end face facing the first boss 113 and a second end face facing the second boss 114. The distance between the first end face and the first boss 113 is 1 mm to 3 mm. The distance between the second end face and the second boss 114 is 1 mm to 3 mm.

[0099] The second buffer 15 includes a first buffer portion 151 and a second buffer portion 152. The thickness of the first buffer portion 151 is less than the thickness of the second buffer portion 152. The first buffer portion 151 is located between the fastener 18 and the second segment 123.

[0100] The first buffer 14 and the second buffer 15 are made of foam.

[0101] The bracket body 111 is also provided with a fastener 18, which is located at least partially between the first boss 113 and the second boss 114.

[0102] The plurality of positioning holes 121 includes a first positioning hole 121 and a second positioning hole 121. The first positioning hole 121 and the second positioning hole 121 are spaced apart in a first direction X. The first positioning hole 121 is located at the beginning of the first segment 122, and the second positioning hole 121 is located at the end of the first segment 122. The first positioning hole 121 is a circular hole, and the second positioning hole 121 is an elongated hole extending along the first direction X.

[0103] refer to Figure 5 The energy storage device 100 may also include a circuit board 17, with one end of the third segment 124 facing away from the second segment 123 electrically connected to the circuit board 17, and the third segment 124 being provided with a stepped portion 125.

[0104] A limiting groove is provided on the bracket body 111, and the starting end 126 of the flexible circuit board 12 is at least partially embedded in the limiting groove.

[0105] The bracket body 111 has a crossbeam 115 extending along a first direction X, and multiple riveting parts 13 are respectively fixedly connected to the crossbeam 115 through multiple positioning holes 121. The tab bracket 11 also includes multiple electrical connection bars 116 integrally formed with the bracket body 111, and the crossbeam 115 partially covers the multiple electrical connection bars 116. An adhesive layer is provided on the surface of the crossbeam 115, and the adhesive layer is located between adjacent riveting parts 13. The flexible circuit board 12 and the crossbeam 115 are respectively bonded to both sides of the adhesive layer.

[0106] The energy storage device 100 also includes at least one sensing element 16 for sensing cell parameters, the sensing element 16 being electrically connected between the cell tab 19 and the flexible circuit board 12.

[0107] In this application, the energy storage device 100 can be a battery module, a start-stop battery pack, a power battery pack, or an energy storage module, etc.

[0108] It should be noted that other aspects of the battery's construction can refer to the conventional construction of batteries in this field, and for the sake of brevity, this application will not elaborate on them further.

[0109] Exemplary electrical equipment

[0110] An embodiment of this application also provides an electrical device including the aforementioned energy storage device 100. The electrical device has the corresponding effects of the aforementioned battery, which will not be described in detail here.

[0111] It should be noted that the electrical equipment mentioned in this application can be energy storage equipment, such as energy storage cabinets, or power consumption equipment, such as electric vehicles, drones and power tools, motorcycles, and workstations.

[0112] All terms used in this application have the same meaning as understood by one of ordinary skill in the art to which this application pertains, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries should be interpreted as having meanings consistent with their meanings in the context of the relevant art, and not as idealized or highly formalized, unless expressly defined herein.

[0113] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, they should be considered part of the specification.

[0114] It should be understood that the term "comprising" and its variations used in this utility model are open-ended, meaning "including but not limited to". The term "according to" means "at least in part according to". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least another embodiment".

[0115] It should be understood that although terms such as "first" or "second" may be used in this invention to describe various elements (such as a first direction and a second direction), these elements are not defined by these terms, which are only used to distinguish one element from another.

[0116] It should be noted that, in the description of this application, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicating orientation or positional relationship, are 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, and therefore should not be construed as a limitation of this application. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0117] It should also be noted that, in the description of this application, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application depending on the specific circumstances. When a specific device is described as being located between a first device and a second device, an intermediary device may or may not be present between the specific device and the first or second device.

[0118] The scope of protection of this utility model is not limited to the above embodiments. Any variations or substitutions that can be conceived by those skilled in the art within the scope of the technology disclosed in this utility model should be included within the scope of protection of this utility model. Therefore, the scope of protection of this utility model should be determined by the scope of the claims.

Claims

1. An energy storage device (100), characterized in that, include: The electrode support (11) includes the support body (111). The flexible circuit board (12) is provided with multiple positioning holes (121). as well as Multiple riveting parts (13) are provided, wherein the multiple riveting parts (13) pass through the multiple positioning holes (121) and are fixedly connected to the bracket body (111).

2. The energy storage device (100) according to claim 1, characterized in that, The bracket body (111) is provided with multiple riveting holes (112), and the multiple riveting parts (13) are multiple rivets. The multiple rivets are respectively inserted into the multiple riveting holes (112) to rivet the flexible circuit board (12) to the bracket body (111); or The plurality of riveting parts (13) are a plurality of riveting posts (130) integrally formed with the bracket body (111). Each riveting post (130) includes a post part (131) and a cap part (132). The post part (131) passes through a corresponding positioning hole (121), and the cap part (132) is located on the side of the flexible circuit board (12) away from the bracket body (111).

3. The energy storage device (100) according to claim 1, characterized in that, The flexible circuit board (12) includes a first segment (122), a second segment (123) and a third segment (124) connected in sequence. The first segment (122) and the third segment (124) are folded with the second segment (123) and arranged at an angle. A first buffer (14) and a second buffer (15) are respectively provided on opposite sides of the thickness direction of the second segment (123).

4. The energy storage device (100) according to claim 3, characterized in that, The bracket body (111) is provided with a first boss (113) and a second boss (114), and the first boss (113) and the second boss (114) are spaced apart in the second direction (Y); The overlap between the first segment (122) and the second segment (123) is at least partially located on the second boss (114), and the overlap between the second segment (123) and the third segment (124) is at least partially located on the first boss (113), and / or The second buffer (15) is located on the side of the second segment (123) facing the support body (111), and is located between the first boss (113) and the second boss (114); and / or The first buffer (14) and / or the second buffer (15) are foam.

5. The energy storage device (100) according to claim 4, characterized in that, It also includes a circuit board, wherein one end of the third segment (124) away from the second segment (123) is electrically connected to the circuit board, and the third segment (124) is provided with a stepped portion (125).

6. The energy storage device (100) according to any one of claims 1 to 5, characterized in that, The support body (111) is provided with a limiting groove, and the starting end (126) of the flexible circuit board (12) is at least partially embedded in the limiting groove.

7. The energy storage device (100) according to any one of claims 1 to 5, characterized in that, The bracket body (111) is provided with a crossbeam (115) extending along a first direction (X). The plurality of riveting parts (13) pass through the plurality of positioning holes and are fixedly connected to the crossbeam (115). The electrode bracket (11) also includes a plurality of electrical connection bars (116) integrally formed with the bracket body (111). The crossbeam (115) partially covers the plurality of electrical connection bars (116). The surface of the crossbeam (115) is provided with an adhesive layer, which is located between adjacent riveted parts (13). The flexible circuit board (12) and the crossbeam (115) are respectively bonded to both sides of the adhesive layer.

8. The energy storage device (100) according to any one of claims 1 to 5, characterized in that, It also includes at least one sensing element (16) for sensing cell parameters and a circuit board (17), wherein the at least one sensing element (16) is electrically connected to the circuit board (17) through the flexible circuit board (12).

9. The energy storage device (100) according to any one of claims 1 to 5, characterized in that, The plurality of positioning holes (121) includes a first positioning hole (121a) and a second positioning hole (121b), the first positioning hole (121a) and the second positioning hole (121b) being spaced apart in a first direction (X), the first positioning hole (121a) being a circular hole, and the second positioning hole (121b) being an oval hole extending along the first direction (X).

10. An electrical appliance, characterized in that, Includes the energy storage device (100) according to any one of claims 1 to 9.

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