Single battery, battery module and power utilization device

Abstract

A single battery (1), a battery module and an electric device are provided. The single battery (1) comprises: a case (200) provided with a first electrode terminal (31) and a second electrode terminal (32); the at least one battery cell (40) is provided with a first electrode plate and a second electrode plate, and the second electrode terminal (32) is connected with the second electrode plate; the switching piece assembly (100) is clamped between the shell (200) and the battery cell (1) and comprises a first switching piece (12) and a first supporting frame (1103), and the first switching piece (12) is supported on the first supporting frame (1103) and connected with the first electrode terminal (31) and the first electrode piece.

Description

Single cells, battery modules and electrical devices Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a single cell, a battery module, and an electrical device. Background Art

[0002] The secondary battery disclosed in document CN109713353B includes a shell, an electrode assembly, a top cover assembly, and an adapter plate. The top cover assembly includes a top cover plate and an electrode terminal fixed on the top cover plate. The adapter plate includes a main body and a protrusion. The main body is connected to the electrode tab of the electrode assembly, and the protrusion extends from the adapter plate lead-out hole on the top cover plate to a position beyond the electrode terminal surface, thereby being welded to the electrode terminal.

[0003] However, since the main body of the adapter is connected to the bottom of the tab, it is equivalent to setting the adapter in mid-air. When welding the electrode terminal and the protrusion, the adapter is prone to downward deformation under the action of its own gravity and downward thrust, resulting in inadequate welding and seriously affecting the quality of the weld.

[0004] Application Contents

[0005] In view of the above problems, the present application provides a single cell battery, which is more convenient to install and can ensure the connection reliability between the adapter assembly and the electrode terminals of the single cell battery.

[0006] The present application also provides a battery module having the above-mentioned single battery.

[0007] The present application also provides an electrical device having the above-mentioned battery module.

[0008] In the first aspect, the present application provides a single cell battery, comprising: a shell, the shell being provided with a first electrode terminal and a second electrode terminal; at least one battery cell, the battery cell being arranged in the shell and having a first electrode sheet and a second electrode sheet, the second electrode terminal and the second electrode sheet being connected; a adapter plate assembly, the adapter plate assembly being clamped between the shell and the battery cell and comprising a first adapter plate and a first support frame, the first adapter plate being supported on the first support frame and connected to the first electrode terminal and the first electrode sheet.

[0009] In the technical solution of the embodiment of the present application, the first adapter plate is arranged on the first support frame. After the first electrode plate of the battery cell is connected to the first adapter plate, the first support frame can fix the first adapter plate, thereby facilitating the installation of the adapter plate assembly into the shell of the single battery cell. After the battery cell equipped with the adapter plate assembly is installed in the shell of the single battery cell, the first support frame can support the first adapter plate, thereby facilitating the connection between the first electrode terminal and the first adapter plate, which is beneficial to improving the installation efficiency of the adapter plate assembly, thereby improving the production efficiency of the single battery cell.

[0010] In some embodiments, the first support frame is formed by an injection molding process using the first adapter plate as an insert. This arrangement ensures a reliable connection between the two, thereby ensuring the structural stability of the adapter plate assembly. The molding process is convenient and easy to implement, without the need for redundant connecting structures, thereby reducing the number of parts, costs, and assembly difficulty.

[0011] In some embodiments, the first adapter plate is detachably connected to the first support frame. This arrangement not only allows the position of the first adapter plate on the first support frame to be adjusted as needed, but also facilitates repair and replacement if the first adapter plate is damaged.

[0012] In some embodiments, the first adapter plate is connected to the first support frame by snap-fitting or by fasteners, which not only ensures the connection reliability between the first adapter plate and the first support frame, but also facilitates assembly and disassembly, thereby improving assembly and disassembly efficiency.

[0013] In some embodiments, the first support frame includes: a first mounting plate; and at least one second mounting plate connected to the first mounting plate, with at least a portion of the first adapter plate clamped between the first and second mounting plates. This configuration of the first support frame facilitates installation and removal of the first adapter plate from the first support frame, improves production efficiency, and has a simple and easy-to-implement structure.

[0014] In some embodiments, one of the first mounting plate and the second mounting plate has a fixing hole and the other has a fixing portion, wherein the fixing portion engages with the fixing hole. This arrangement ensures a reliable connection between the first mounting plate and the second mounting plate, thereby ensuring reliable and stable installation of the first adapter plate on the first support frame.

[0015] In some embodiments, one of the first mounting plate and the second mounting plate has a first positioning hole and the other has a positioning portion, at least a portion of the first adapter plate has a second positioning hole, and the positioning portion cooperates with the first and second positioning holes. The positioning portion not only ensures a secure connection between the first and second mounting plates but also positions the first adapter plate, preventing displacement and further ensuring reliable and stable installation of the first adapter plate.

[0016] In some embodiments, both ends of the first adapter plate are connected to the first support frame. The first support frame can effectively support the first adapter plate, thereby facilitating the fixing of the first adapter plate and achieving the effect of facilitating installation in the housing of the single battery.

[0017] In some embodiments, the first support frame has at least one fixing slot, and at least one end of the first adapter plate engages with the corresponding fixing slot. Since at least one end of the first adapter plate is inserted into the fixing slot, the first adapter plate can be prevented from falling off the first support frame, further ensuring the reliable installation of the first adapter plate on the first support frame.

[0018] In some embodiments, the first adapter sheet includes: an electrode terminal connection portion; and an electrode sheet connection portion, wherein the electrode sheet connection portion is connected to the electrode terminal connection portion; wherein both the electrode terminal connection portion and the electrode sheet connection portion are connected to the first support frame. The first support frame can effectively support the electrode terminal connection portion and the electrode sheet connection portion, thereby ensuring the reliability and convenience of the connection between the electrode terminal connection portion and the first electrode terminal.

[0019] In some embodiments, one end of the electrode sheet connection portion is connected to one end of the electrode terminal connection portion, and the other end of the electrode sheet connection portion and the other end of the electrode terminal connection portion respectively form two ends of the length direction of the first adapter sheet; wherein, the electrode sheet connection portion includes a plurality of connecting sheets, and the arrangement direction of the plurality of connecting sheets is perpendicular to the length direction of the first adapter sheet, and the one end of the electrode terminal connection portion is connected between two adjacent connecting sheets, so that the electrode sheets of multiple battery cells can be electrically connected to the electrode terminals.

[0020] In some embodiments, the first electrode terminal and the second electrode terminal are disposed on the same side wall or different side walls of the housing.

[0021] In some embodiments, the adapter plate assembly further includes a second adapter plate, and the second electrode terminal is connected to the second electrode plate via the second adapter plate. By providing the second adapter plate, the convenience of connecting the second electrode terminal to the second electrode plate can be improved.

[0022] In some embodiments, one of the first and second adapter plates is copper and the other is aluminum. Copper and aluminum have good conductivity, are soft, low cost, and are relatively stable in air. Therefore, using copper and aluminum as one of the first and second adapter plates improves the conductivity and installation convenience of the adapter plate assembly while also reducing costs.

[0023] In some embodiments, the adapter plate assembly further includes a second support frame, on which the second adapter plate is supported. After connecting the first electrode plate of the battery cell to the first adapter plate, and the second electrode plate to the second adapter plate, the second support frame can secure the second adapter plate, thereby facilitating installation of the adapter plate assembly into the housing of the single battery cell. After the battery cell equipped with the adapter plate assembly is installed into the housing of the single battery cell, the second support frame can support the second adapter plate, thereby facilitating connection between the second electrode terminal and the second adapter plate, thereby improving installation efficiency of the adapter plate assembly and thus improving production efficiency of the single battery cell.

[0024] In some embodiments, the first support frame has a first mounting opening for avoiding the first electrode terminal and the first electrode sheet, and both ends of the first adapter sheet are connected to the edge of the first mounting opening; the second support frame has a second mounting opening for avoiding the second electrode terminal and the second electrode sheet, and both ends of the second adapter sheet are connected to the edge of the mounting opening. Due to the provision of the first mounting opening, the first support frame can avoid the first electrode terminal and the first electrode sheet, so that the first adapter sheet can contact the first electrode terminal and the first electrode sheet respectively, thereby achieving electrical connection between the first electrode terminal and the first electrode sheet; due to the provision of the second mounting opening, the second support frame can avoid the second electrode terminal and the second electrode sheet, so that the second adapter sheet can contact the second electrode terminal and the second electrode sheet respectively, thereby achieving electrical connection between the second electrode terminal and the second electrode sheet.

[0025] In some embodiments, the adapter plate assembly includes a bracket extending along a first direction, and the bracket includes a first support frame and a second support frame. The first support frame and the second support frame are arranged and connected in the first direction, so that the first support frame and the second support frame are set on the same side of the battery cell, which not only facilitates the installation of the battery cell equipped with the adapter plate assembly into the shell of the single battery, but also facilitates the connection between the first electrode terminal and the first adapter plate, the second electrode terminal and the second adapter plate.

[0026] In some embodiments, both ends of the first adapter plate in the second direction are connected to the edge of the first mounting opening; and / or both ends of the second adapter plate in the second direction are connected to the edge of the second mounting opening, and the second direction is perpendicular to the first direction. This eliminates the need for a support structure in the middle of the bracket to secure the first and second adapter plates, simplifying the bracket structure while ensuring that the bracket can effectively support the first and second adapter plates.

[0027] In some embodiments, both ends of the first adapter plate in the first direction are connected to the edge of the first mounting opening; and / or both ends of the second adapter plate in the first direction are connected to the edge of the second mounting opening. By fixing the ends of the first adapter plate and the second adapter plate in this manner, the first adapter plate and the second adapter plate can be connected to a common support portion, reducing the number of support portions in the bracket, thereby simplifying the bracket structure and reducing manufacturing difficulty.

[0028] In some embodiments, the housing has a mounting wall having a first opening and a second opening, the first electrode terminal is disposed at the first opening, the second electrode terminal is disposed at the second opening, the battery cell is disposed opposite the mounting wall, and the adapter plate assembly is sandwiched between the mounting wall and the battery cell. By providing the first opening and the second opening on the mounting wall, the first electrode terminal and the second electrode terminal are both disposed on the mounting wall. Thus, the first adapter plate and the second adapter plate can be disposed on the same side of the battery cell, which not only facilitates installation of the battery cell equipped with the adapter plate assembly into the housing of the single battery cell, but also facilitates connection between the first electrode terminal and the first adapter plate, and between the second electrode terminal and the second adapter plate.

[0029] In some embodiments, the shell includes: a shell body, one end of which has an open opening; an end cap, the end cap being arranged on the shell body to open and close the open opening; wherein the mounting wall is arranged at the other end of the shell body and opposite to the open opening, and the mounting wall is integrally formed with the side wall of the shell body. In this arrangement, the battery cell equipped with the adapter assembly can enter the shell from the open opening. When the battery cell is installed in place in the shell, the adapter assembly is arranged opposite to the mounting wall, so that the first adapter can be connected to the first electrode terminal on the mounting wall, and the second adapter can be connected to the second electrode terminal on the mounting wall. The end cap not only ensures the sealing of the shell and prevents leakage of the electrolyte, but also protects the battery cell.

[0030] In some embodiments, the first adapter plate and the first electrode terminal, as well as the second adapter plate and the second electrode terminal are connected together through a penetration welding process, thereby electrically connecting the first electrode terminal and the first electrode plate, and electrically connecting the second electrode terminal and the second electrode plate, which is beneficial to improving the installation efficiency of the adapter plate assembly, thereby improving the production efficiency of the single cell.

[0031] In some embodiments, the first electrode terminal has a first recessed portion recessed toward the first adapter sheet, the bottom wall of the first recess being welded to the first adapter sheet, and a first cover being provided at the opening of the first recess. The provision of the first recess allows the bottom wall of the first recess to be welded to the first adapter sheet from the first recess, thereby achieving electrical connection between the first electrode terminal and the first electrode sheet via the bottom wall of the first recess. The provision of the first cover allows the opening of the first recess to be sealed by the first cover, thereby preventing debris from entering the first recess and protecting the connection between the first electrode terminal and the first adapter sheet.

[0032] In some embodiments, the second electrode terminal has a second recessed portion recessed toward the second adapter sheet, the bottom wall of the second recess being welded to the second adapter sheet, and a second cover being provided at the opening of the second recess. The provision of the second recess allows the bottom wall of the second recess to be welded to the second adapter sheet from the second recess, thereby achieving electrical connection between the second electrode terminal and the second electrode sheet via the bottom wall of the second recess. The provision of the second cover allows the second cover to seal the opening of the second recess, thereby preventing debris from entering the second recess and protecting the connection between the second electrode terminal and the second adapter sheet.

[0033] In some embodiments, a sealant is provided between the first electrode terminal and the edge of the first opening, and between the second electrode terminal and the edge of the second opening, to ensure the sealing between the first electrode terminal and the edge of the first opening.

[0034] In a second aspect, the present application provides a battery module comprising a single cell according to the above embodiment.

[0035] In the technical solution of the embodiment of the present application, the use of the above-mentioned single battery is beneficial to improving the production efficiency of the battery module.

[0036] In a third aspect, the present application provides an electrical device comprising a battery module according to the above embodiment.

[0037] In the technical solution of the embodiment of the present application, the use of the above-mentioned battery module is beneficial to improving the production efficiency of electrical devices.

[0038] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0040] FIG1 is a schematic structural diagram of a switching plate assembly of a single battery according to some embodiments of the present application;

[0041] FIG2 is an exploded view of the structure of the adapter assembly of the single battery shown in FIG1 ;

[0042] FIG3 is a partial enlarged view of the adapter plate assembly of the single cell shown in FIG2 ;

[0043] FIG4 is a schematic structural diagram of an adapter assembly of a single battery according to some embodiments of the present application;

[0044] FIG5 is an exploded view of the structure of the adapter assembly of the single battery shown in FIG4 ;

[0045] FIG6 is a partial enlarged view of the adapter plate assembly of the single battery shown in FIG5 ;

[0046] FIG7 is a schematic structural diagram of a single battery according to some embodiments of the present application;

[0047] FIG8 is an exploded view of the structure of the single cell shown in FIG7 ;

[0048] FIG9 is a cross-sectional view of the structure of the single cell shown in FIG7 ;

[0049] FIG10 is a partial enlarged view of the single cell shown in FIG9 ;

[0050] FIG11 is a partial enlarged view of the single battery shown in FIG9 .

[0051] Reference numerals:

[0052] Single battery 1, adapter assembly 100, avoidance opening 101,

[0053] Bracket 11, first installation area 1101, second installation area 1102, first support frame 1103, second support frame 1104,

[0054] The first mounting plate 111, the second mounting plate 112,

[0055] Fixing hole 113, fixing portion 114, first positioning hole 115, positioning portion 116, fixing groove 117,

[0056] First mounting opening 1181, second mounting opening 1182, support portion 119,

[0057] The first adapter plate 12, the second adapter plate 13,

[0058] Electrode terminal connection portion 141, second positioning hole 1411, electrode sheet connection portion 142, connection sheet 1421,

[0059] Housing 200,

[0060] Shell body 21, open mouth 210, first opening 211, second opening 212, mounting wall 213, injection hole 2130, side wall 214, end cover 22,

[0061] The first electrode terminal 31, the first recess 310, the second electrode terminal 32, the second recess 320,

[0062] Battery cell 40, first electrode sheet 41, second electrode sheet 42,

[0063] The first cover 51, the second cover 52,

[0064] Seal 60,

[0065] First plastic sealing body 71, second plastic sealing body 72, first opening 721, second opening 722,

[0066] Insulation sheet 80. DETAILED DESCRIPTION

[0067] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0068] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application. The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first" and "second" in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary-secondary relationship.

[0069] References to "embodiments" in this application mean that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0070] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connected," and "attached" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0071] The term "and / or" in this application simply describes an association between related objects, indicating that three possible relationships exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this application generally indicates that the related objects are in an "or" relationship.

[0072] In the embodiments of this application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components in different embodiments are omitted. It should be understood that the thickness, length, width, and other dimensions of the various components in the embodiments of this application, as well as the overall thickness, length, width, and other dimensions of the integrated device shown in the drawings are merely illustrative and should not constitute any limitation on this application.

[0073] Currently in the field of new energy batteries, welding of the adapter body is an indispensable process, which is used to connect the poles on the top cover of the battery and the tabs of the battery cell inside the battery to form current conduction.

[0074] The secondary battery disclosed in document CN109713353B includes a shell, an electrode assembly, a top cover assembly, and an adapter plate. The top cover assembly includes a top cover plate and an electrode terminal fixed on the top cover plate. The adapter plate includes a main body and a protrusion. The main body is connected to the electrode tab of the electrode assembly, and the protrusion extends from the adapter plate lead-out hole on the top cover plate to a position beyond the electrode terminal surface, thereby being welded to the electrode terminal.

[0075] However, since the main body of the adapter is connected to the bottom of the tab, it is equivalent to suspending the adapter. When welding the electrode terminal and the protrusion, the adapter is prone to downward deformation under the action of its own gravity and downward thrust, resulting in inadequate welding, seriously affecting the quality of the weld. Moreover, since the weld between the protrusion and the electrode terminal is exposed, the weld is prone to damage defects.

[0076] In view of this, an embodiment of the present application provides a single cell battery including an adapter plate assembly. When connecting the first electrode terminal and the first adapter plate, the first support frame can support the first adapter plate, thereby facilitating the fixing of the first adapter plate, thereby achieving the effect of facilitating the installation of the adapter plate assembly into the shell of the single cell battery, and ensuring the connection reliability between the adapter plate assembly and the electrode terminal of the single cell battery.

[0077] A single cell 1 according to an embodiment of the present application will be described below with reference to FIG. 1 to FIG. 11 .

[0078] As shown in FIG. 1 to FIG. 11 , a single battery cell 1 according to an embodiment of the present application includes a housing 200 , at least one battery cell 40 , and a transfer sheet assembly 100 .

[0079] The shell 200 is provided with a first electrode terminal 31 and a second electrode terminal 32, the battery cell 40 is provided in the shell 200, and the adapter plate assembly 100 includes a first adapter plate 12, which is connected to the first electrode terminal 31 and the first electrode plate 41 of the battery cell 40, thereby achieving electrical connection between the first electrode terminal 31 and the first electrode plate 41.

[0080] The adapter plate assembly 100 is sandwiched between the housing 200 and the battery core 40 . The adapter plate assembly further includes a first support frame 1103 , and the first adapter plate 12 is supported on the first support frame 1103 .

[0081] In the technical solution of the embodiment of the present application, the first adapter plate 12 is arranged on the first support frame 1103. After the first electrode plate 41 of the battery cell 40 is connected to the first adapter plate 12, the first support frame 1103 can fix the first adapter plate 12, thereby facilitating the installation of the adapter plate assembly 100 into the shell 200 of the single battery 1. After the battery cell 40 equipped with the adapter plate assembly 100 is installed into the shell 200 of the single battery 1, the first support frame 1103 can support the first adapter plate 12, thereby facilitating the connection between the first electrode terminal 31 and the first adapter plate 12, which is beneficial to improving the installation efficiency of the adapter plate assembly 100, thereby improving the production efficiency of the single battery 1.

[0082] As shown in Figures 1-3, in some embodiments, the first support frame 1103 is formed by an injection molding process using the first adapter plate 12 as an insert. This arrangement ensures the reliability of the connection between the two, thereby ensuring the structural stability of the adapter plate assembly 100. It is convenient and easy to mold, does not require redundant connecting structures, and helps reduce the number of parts, cost, and assembly difficulty.

[0083] Specifically, a mold corresponding to the shape of the adapter plate assembly 100 can be made first, and then the first adapter plate 12 can be placed in a predetermined position, and the melt can be injected into the mold. After the melt cools and solidifies, the first support frame 1103 is formed on the first adapter plate 12, thereby realizing the connection between the first support frame 1103 and the first adapter plate 12.

[0084] As shown in FIG. 4 to FIG. 6 , in some embodiments, the first adapter plate 12 is detachably connected to the first support frame 1103 .

[0085] With such a configuration, not only can the position of the first adapter plate 12 on the first support frame 1103 be adjusted as needed, but also if the first adapter plate 12 is damaged, it can be easily repaired and replaced.

[0086] In some embodiments, the first adapter plate 12 is connected to the first support frame 1103 by snapping, which not only ensures the connection reliability between the first adapter plate 12 and the first support frame 1103, but also facilitates assembly and disassembly, thereby improving assembly and disassembly efficiency.

[0087] For example, one of the first adapter plate 12 and the first support frame 1103 is provided with a first buckle, and the other of the first adapter plate 12 and the first support frame 1103 is provided with a first clamping hole that is clamped and matched with the first buckle.

[0088] In other embodiments, the first adapter plate 12 is connected to the first support frame 1103 via fasteners, which provides reliable connection and convenient operation.

[0089] For example, the first adapter plate 12 is provided with a first connecting hole, the first support frame 1103 is provided with a first matching hole, the first adapter plate 12 and the first support frame 1103 are connected by a first fastener, and the first fastener is passed through the first connecting hole and the first matching hole.

[0090] As shown in Figures 4-6, in some embodiments, the first support frame 1103 includes a first mounting plate 111 and at least one second mounting plate 112, the second mounting plate 112 is connected to the first mounting plate 111, and at least a portion of the first adapter plate 12 is clamped between the first mounting plate 111 and the second mounting plate 112, thereby fixing the first adapter plate 12 on the first support frame 1103.

[0091] In some specific embodiments, the first support frame 1103 includes a first mounting plate 111 and two second mounting plates 112 , and the two second mounting plates 112 are spaced apart in the length direction of the first mounting plate 111 (the left-right direction as shown in FIG. 5 ).

[0092] One end of the first adapter plate 12 is clamped between one of the second mounting plates 112 and the first mounting plate 111 , and the other end of the first adapter plate 12 is clamped between the other second mounting plate 112 and the first mounting plate 111 .

[0093] Therefore, by setting the first support frame 1103 to the above structure, the installation and removal of the first adapter plate 12 on the first support frame 1103 are facilitated, which is conducive to improving production efficiency, and the structure is simple and easy to implement.

[0094] As shown in Figures 5 and 6, in some embodiments, one of the first mounting plate 111 and the second mounting plate 112 has a fixing hole 113, and the other of the first mounting plate 111 and the second mounting plate 112 has a fixing portion 114, which cooperates with the fixing hole 113.

[0095] Among them, the fixing part 114 can form a fixing column corresponding to the shape of the fixing hole 113, the fixing column is inserted into the fixing hole 113, and the fixing column and the fixing hole 113 are interference fit to prevent the fixing column from detaching from the fixing hole 113, thereby ensuring the connection reliability between the first mounting plate 111 and the second mounting plate 112, thereby ensuring the installation reliability and stability of the first adapter plate 12 on the first support frame 1103.

[0096] In some specific embodiments, each second mounting plate 112 is provided with a plurality of fixing portions 114, and a plurality of fixing holes 113 are provided at positions of the first mounting plate 111 corresponding to the second mounting plate 112. The plurality of fixing portions 114 are plugged into and matched with the plurality of fixing holes 113 in a one-to-one correspondence, thereby further ensuring the connection reliability between the second mounting plate 112 and the first mounting plate 111, thereby ensuring the installation reliability and stability of the first adapter plate 12 on the first support frame 1103.

[0097] As shown in Figures 5 and 6, in some embodiments, one of the first mounting plate 111 and the second mounting plate 112 has a first positioning hole 115, the other of the first mounting plate 111 and the second mounting plate 112 has a positioning portion 116, at least a portion of the first adapter plate 12 has a second positioning hole 1411, and the positioning portion 116 cooperates with the first positioning hole 115 and the second positioning hole 1411.

[0098] Therefore, by setting a first positioning hole 115 in one of the first mounting plate 111 and the second mounting plate 112 and setting a positioning portion 116 in the other, a second positioning hole 1411 is set on the first adapter plate 12. By utilizing the positioning portion 116, not only can the connection reliability between the first mounting plate 111 and the second mounting plate 112 be ensured, but the first adapter plate 12 can also be positioned to avoid displacement of the first adapter plate 12, thereby further ensuring the installation reliability and stability of the first adapter plate 12.

[0099] Among them, the positioning portion 116 can form a positioning column corresponding to the shape of the first positioning hole 115 and the second positioning hole 1411. The positioning column is inserted into the first positioning hole 115 and the second positioning hole 1411, and the positioning column is interference fit with the first positioning hole 115 and the second positioning hole 1411 to prevent the positioning column from detaching from the first positioning hole 115 and the second positioning hole 1411, thereby ensuring the connection reliability of the first support frame 1103 and the first adapter plate 12.

[0100] In some specific embodiments, each second mounting plate 112 is provided with a plurality of positioning portions 116, and a plurality of first positioning holes 115 are provided at positions of the first mounting plate 111 corresponding to the second mounting plate 112. The plurality of positioning portions 116 are plugged into and matched with the plurality of first positioning holes 115 in a one-to-one correspondence, thereby further ensuring the connection reliability between the second mounting plate 112 and the first mounting plate 111.

[0101] Furthermore, the first adapter plate 12 is provided with a plurality of second positioning holes 1411 , and the plurality of positioning portions 116 are plugged into and matched with the plurality of second positioning holes 1411 in a one-to-one correspondence, thereby further ensuring the connection reliability between the first support frame 1103 and the first adapter plate 12 .

[0102] In some embodiments, both ends of the first adapter plate 12 are connected to the first support frame 1103. The first support frame 1103 can effectively support the first adapter plate 12, thereby facilitating the fixing of the first adapter plate 12 and achieving the effect of facilitating installation into the shell 200 of the single battery 1.

[0103] In some embodiments, the first support frame 1103 has at least one fixing slot 117, and at least one end of the first adapter plate 12 is engaged with the corresponding fixing slot 117. Since at least one end of the first adapter plate 12 is inserted into the fixing slot 117, the first adapter plate 12 can be prevented from falling off the first support frame 1103, further ensuring the reliability of the installation of the first adapter plate 12 on the first support frame 1103.

[0104] In some embodiments, the first electrode terminal 31 and the second electrode terminal 32 are disposed on the same side wall of the housing 200. For example, the first electrode terminal 31 and the second electrode terminal 32 are both disposed on the top wall or the side wall of the housing 200, which not only facilitates the installation of the battery cell 40 equipped with the adapter assembly 100 into the housing 200 of the single battery 1, but also facilitates the connection between the first electrode terminal 31 and the first electrode sheet, and the second electrode terminal 32 and the second electrode sheet.

[0105] In some embodiments, the first electrode terminal 31 and the second electrode terminal 32 are disposed on different side walls of the housing 200 . Specifically, the locations of the first electrode terminal 31 and the second electrode terminal 32 can be selected as needed.

[0106] In some embodiments, the adapter assembly 100 further includes a second adapter 13, which is connected to the second electrode terminal 32 and the second electrode sheet 42 of the battery cell 40, thereby electrically connecting the second electrode terminal 32 and the second electrode sheet 42. The provision of the second adapter 13 can improve the convenience of connecting the second electrode terminal 32 and the second electrode sheet.

[0107] In some embodiments, one of the first adapter plate 12 and the second adapter plate 13 is a copper plate, and the other of the first adapter plate 12 and the second adapter plate 13 is an aluminum plate. Copper and aluminum plates have good conductivity, are soft, low cost, and are relatively stable in air. Therefore, using one of the first adapter plate 12 and the second adapter plate 13 as a copper plate and the other as an aluminum plate can improve the conductivity and installation convenience of the adapter plate assembly 100, while also reducing costs.

[0108] In some embodiments, the adapter plate assembly 100 further includes a second support frame 1104 , and the second adapter plate 13 is supported on the second support frame 1104 .

[0109] Therefore, by setting the second adapter plate 13 on the second support frame 1104, after connecting the first electrode plate 41 of the battery cell 40 with the first adapter plate 12, and the second electrode plate 42 with the second adapter plate 13, the second support frame 1104 can fix the second adapter plate 13, thereby achieving the effect of facilitating the installation of the adapter plate assembly 100 into the shell 200 of the single battery 1. After the battery cell 40 equipped with the adapter plate assembly 100 is installed into the shell 200 of the single battery 1, the second support frame 1104 can support the second adapter plate 13, thereby facilitating the connection between the second electrode terminal 32 and the second adapter plate 13, which is beneficial to improving the installation efficiency of the adapter plate assembly 100, thereby improving the production efficiency of the single battery 1.

[0110] The structure of the second support frame 1104 is the same as that of the first support frame 1103. In other words, the connection method between the second adapter plate 13 and the second support frame 1104 and the connection method between the first adapter plate 12 and the first support frame 1103 can be the same.

[0111] In some embodiments, one of the second adapter plate 13 and the second support frame 1104 is provided with a second buckle, and the other of the second adapter plate 13 and the second support frame 1104 is provided with a second locking hole that is engaged with the second buckle.

[0112] In other embodiments, a second connecting hole is provided on the second adapter plate 13, and a second matching hole is provided on the second support frame 1104. The second adapter plate 13 and the second support frame 1104 are connected by a second fastener, and the second fastener is passed through the second connecting hole and the second matching hole.

[0113] Among them, the connection method between the first adapter plate 12 and the first support frame 1103 and the connection method between the second adapter plate 13 and the second support frame 1104 can be the same or different. For example, the first adapter plate 12 and the first support frame 1103 are connected by a snap-on method, and the second adapter plate 13 and the second support frame 1104 are connected by fasteners. The specific selection can be made according to actual conditions.

[0114] In some embodiments, the first support frame 1103 has a first mounting opening 1181, the first mounting opening 1181 is used to avoid the first electrode terminal 31 and the first electrode sheet 41, and the two ends of the first adapter plate 12 are connected to the edge of the first mounting opening 1181. The second support frame 1104 has a second mounting opening 1182, the second mounting opening 1182 is used to avoid the second electrode terminal 32 and the second electrode sheet 42, and the two ends of the second adapter plate 13 are connected to the edge of the second mounting opening 1182.

[0115] That is, the first adapter plate 12 is disposed at the first installation opening 1181 , and the second adapter plate 13 is disposed at the second installation opening 1182 .

[0116] Due to the setting of the first mounting port 1181, the first support frame 1103 can avoid the first electrode terminal 31 and the first electrode sheet 41, so that the first adapter plate 12 can contact the first electrode terminal 31 and the first electrode sheet 41 respectively, thereby enabling the first electrode terminal 31 and the first electrode sheet 41 to be electrically connected.

[0117] Similarly, due to the setting of the second mounting port 1182, the second support frame 1104 can avoid the second electrode terminal 32 and the second electrode sheet 42, and the second adapter plate 13 can contact the second electrode terminal 32 and the second electrode sheet 42 respectively, so that the second electrode terminal 32 and the second electrode sheet 42 are electrically connected.

[0118] In some embodiments, the adapter assembly 100 includes a bracket 11 , which extends along a first direction. The bracket 11 has a first mounting area 1101 and a second mounting area 1102 , and the first mounting area 1101 and the second mounting area 1102 are arranged in the first direction.

[0119] Among them, the bracket 11 includes a first support frame 1103 and a second support frame 1104, the first support frame 1103 and the second support frame 1104 are arranged and connected in the first direction, the first installation area 1101 is located on the first support frame 1103, and the second installation area 1102 is located on the second support frame 1104.

[0120] That is to say, the first support frame 1103 and the second support frame 1104 are arranged on the same side of the battery cell 40, which not only facilitates the installation of the battery cell 40 equipped with the adapter assembly 100 into the shell 200 of the single battery 1, but also facilitates the connection between the first electrode terminal 31 and the first adapter 12, the second electrode terminal 32 and the second adapter 13.

[0121] In some embodiments, both ends of the first adapter plate 12 in the second direction are connected to the edge of the first mounting opening 1181, the second direction is perpendicular to the first direction, and both ends of the second adapter plate 13 in the second direction are connected to the edge of the second mounting opening 1182. In this way, there is no need to set a supporting structure for fixing the first adapter plate 12 and the second adapter plate 13 in the middle part of the bracket 11. On the basis of ensuring that the bracket 11 can effectively support the first adapter plate 12 and the second adapter plate 13, the structure of the bracket 11 is simplified.

[0122] Since this embodiment is not shown in the drawings, for the convenience of describing this embodiment, the left-right direction in FIG. 1 is defined as a first direction, and the front-back direction in FIG. 1 is defined as a second direction.

[0123] The two ends of the first adapter plate 12 in the front-to-back direction can be respectively connected to the front and rear edges of the first mounting opening 1181, that is, the two ends of the first adapter plate 12 in the front-to-back direction are fixed on the first support frame 1103, so that the first support frame 1103 can effectively support the first adapter plate 12, thereby facilitating the fixing of the first adapter plate 12 and achieving the effect of facilitating installation into the shell 200 of the single cell 1.

[0124] Similarly, the two ends of the second adapter plate 13 in the front-to-back direction can be respectively connected to the front and rear edges of the second mounting port 1182, that is, the two ends of the second adapter plate 13 in the front-to-back direction are fixed on the second support frame 1104, so that the second support frame 1104 can effectively support the second adapter plate 13, thereby facilitating the fixing of the second adapter plate 13 and achieving the effect of facilitating installation into the shell 200 of the single cell battery 1.

[0125] As shown in Figures 1 to 6, in some embodiments, the middle portion of the bracket 11 has a support portion 119 to separate the first mounting port 1181 and the second mounting port 1182. The first mounting port 1181 and the second mounting port 1182 are arranged in a first direction, and the two ends of the first adapter plate 12 are connected to the edge of the first mounting port 1181, and the two ends of the second adapter plate 13 are connected to the edge of the second mounting port 1182.

[0126] Therefore, by setting the support part 119, the support part 119 can be used to partition the bracket 11, so that the fixing direction of the first adapter plate 12 and the second adapter plate 13 can be selected as needed, and the support part 119 can increase the structural strength of the bracket 11 to prevent the bracket 11 from deformation.

[0127] In some embodiments, both ends of the first adapter plate 12 in the first direction are connected to the edges of the first installation opening 1181 , and both ends of the second adapter plate 13 in the first direction are connected to the edges of the second installation opening 1182 .

[0128] That is to say, one end of the first adapter plate 12 in the first direction is connected to one end of the bracket 11, the other end of the first adapter plate 12 in the first direction is connected to the support portion 119, one end of the second adapter plate 13 in the first direction is connected to the other end of the bracket 11, and the other end of the second adapter plate 13 in the first direction is connected to the support portion 119.

[0129] Therefore, by fixing the two ends of the first adapter plate 12 and the second adapter plate 13 in this way, the first adapter plate 12 and the second adapter plate 13 can be connected to the support part 119 together, reducing the number of support parts 119 in the bracket 11, thereby simplifying the structure of the bracket 11 and reducing the processing difficulty.

[0130] As shown in FIG5 , in this embodiment, the bracket 11 includes a first mounting plate 111 and three second mounting plates 112 . The three second mounting plates 112 are spaced apart in the length direction of the first mounting plate 111 (left-right direction as shown in FIG5 ).

[0131] Among them, one end of the first adapter plate 12 is clamped between the second mounting plate 112 located on the left and one end of the first mounting plate 111, one end of the second adapter plate 13 is clamped between the second mounting plate 112 located on the right and the other end of the first mounting plate 111, and the other end of the first adapter plate 12 and the other end of the second adapter plate 13 are both clamped between the second mounting plate 112 located in the middle and the middle of the first mounting plate 111.

[0132] Therefore, by setting the bracket 11 into the above structure, the installation and removal of the first adapter plate 12 and / or the second adapter plate 13 on the bracket 11 are facilitated, which is conducive to improving production efficiency, and the structure is simple and easy to implement.

[0133] In some embodiments, the first adapter plate 12 includes an electrode terminal connection portion 141 and an electrode sheet connection portion 142 , the electrode sheet connection portion 142 is connected to the electrode terminal connection portion 141 , and both the electrode terminal connection portion 141 and the electrode sheet connection portion 142 are connected to the first support frame 1103 .

[0134] That is to say, the first support frame 1103 can effectively support the electrode terminal connecting part 141 and the electrode sheet connecting part 142 of the first adapter plate 12, thereby ensuring the reliability and convenience of the connection between the electrode terminal connecting part 141 of the first adapter plate 12 and the first electrode terminal 31.

[0135] In the embodiment where the adapter plate assembly 100 includes the second support frame 1104, the second adapter plate 13 includes an electrode terminal connection portion 141 and an electrode plate connection portion 142. The electrode plate connection portion 142 is connected to the electrode terminal connection portion 141. Both the electrode terminal connection portion 141 and the electrode plate connection portion 142 are connected to the second support frame 1104. The second support frame 1104 can effectively support the electrode terminal connection portion 141 and the electrode plate connection portion 142 of the second adapter plate 13, thereby ensuring the reliability and convenience of the connection between the electrode terminal connection portion 141 of the second adapter plate 13 and the second electrode terminal 32.

[0136] In some embodiments, one end of the electrode sheet connection portion 142 is connected to one end of the electrode terminal connection portion 141, and the other end of the electrode sheet connection portion 142 and the other end of the electrode terminal connection portion 141 respectively form the two ends of the length direction of the first adapter plate 12. The electrode sheet connection portion 142 includes a plurality of connection plates 1421, and the arrangement direction of the plurality of connection plates 1421 is perpendicular to the first direction. One end of the electrode terminal connection portion 141 is connected between two adjacent connection plates 1421.

[0137] The structure of the first adapter plate 12 and the structure of the second adapter plate 13 may be the same.

[0138] Specifically, as shown in Figures 5 and 6, in this embodiment, the electrode terminal connecting part 141 of the first adapter sheet 12 is respectively provided with a connecting piece 1421 on both sides in the second direction, and each connecting piece 1421 of the first adapter sheet 12 can be connected to the first electrode sheet 41 of the battery cell 40, and the electrode terminal connecting part 141 of the second adapter sheet 13 is respectively provided with a connecting piece 1421 on both sides in the second direction, and each connecting piece 1421 of the second adapter sheet 13 can be connected to the second electrode sheet 42 of the battery cell 40, thereby connecting the two battery cells 40 and the adapter sheet assembly 100 together, the electrode terminal connecting part 141 of the first adapter sheet 12 is connected to the first electrode terminal 31 of the single battery cell 1, and the electrode terminal connecting part 141 of the second adapter sheet 13 is connected to the second electrode terminal 32 of the single battery cell 1, so that the electrode sheets of multiple battery cells can be electrically connected to the electrode terminals.

[0139] As shown in Figures 7 and 8, in some embodiments, the shell 200 has a mounting wall 213, the mounting wall 213 has a first opening 211 and a second opening 212, the first opening 211 and the second opening 212 are both connected to the inner cavity of the shell 200, the first electrode terminal 31 is provided at the first opening 211, the second electrode terminal 32 is provided at the second opening 212, the battery cell 40 is provided in the shell 200, and the battery cell 40 is arranged opposite to the mounting wall 213, and the adapter assembly 100 is clamped between the mounting wall 213 and the battery cell 40.

[0140] Among them, the first adapter plate 12 is connected to the first electrode terminal 31 and the first electrode plate 41 of the battery cell 40, so that the first electrode terminal 31 and the first electrode plate 41 are electrically connected, and the second adapter plate 13 is connected to the second electrode terminal 32 and the second electrode plate 42 of the battery cell 40, so that the second electrode terminal 32 and the second electrode plate 42 are electrically connected.

[0141] Therefore, by setting the first opening 211 and the second opening 212 on the mounting wall 213, the first electrode terminal 31 and the second electrode terminal 32 are both set on the mounting wall 213, so that the first adapter plate 12 and the second adapter plate 13 can be correspondingly set on the same side of the battery cell 40, which not only facilitates the installation of the battery cell 40 equipped with the adapter plate assembly 100 into the shell 200 of the single battery 1, but also facilitates the connection between the first electrode terminal 31 and the first adapter plate 12, and the second electrode terminal 32 and the second adapter plate 13.

[0142] As shown in Figure 8, in some embodiments, the shell 200 includes a shell body 21, one end of the shell body 21 has an open opening 210, and an installation wall 213 is arranged at the other end of the shell body 21. The installation wall 213 is arranged opposite to the open opening 210, and the installation wall 213 and the side wall 214 of the shell body 21 are integrally formed.

[0143] With this arrangement, the battery cell 40 equipped with the adapter plate assembly 100 can enter the shell 200 from the open mouth 210. When the battery cell 40 is installed in place in the shell 200, the adapter plate assembly 100 is arranged opposite the installation wall 213, so that the first adapter plate 12 can be connected to the first electrode terminal 31 on the installation wall 213, and the second adapter plate 13 can be connected to the second electrode terminal 32 on the installation wall 213.

[0144] Furthermore, the shell 200 also includes an end cover 22, which is provided on the shell body 21. The end cover 22 is used to open and close the opening 210, so that the battery cell 40 can be enclosed in the shell 200, which not only ensures the sealing of the shell 200 and prevents leakage of the electrolyte, but also protects the battery cell 40.

[0145] In some embodiments, the first transfer plate 12 and the first electrode terminal 31 are connected together by a penetration welding process, so that the first electrode terminal 31 and the first electrode plate 41 are electrically connected.

[0146] Specifically, after the first electrode sheet 41 of the battery cell 40 is welded to the first adapter sheet 12, the first support frame 1103 can fix the first adapter sheet 12, thereby facilitating the installation of the adapter sheet assembly 100 into the shell 200 of the single cell 1. After the battery cell 40 equipped with the adapter sheet assembly 100 is installed into the shell 200 of the single cell 1, the first support frame 1103 can support the first adapter sheet 12, thereby facilitating the welding of the first electrode terminal 31 and the first adapter sheet 12, which is beneficial to improving the installation efficiency of the adapter sheet assembly 100, thereby improving the production efficiency of the single cell 1.

[0147] In some embodiments, the second transfer plate 13 and the second electrode terminal 32 are connected together by a penetration welding process, so that the second electrode terminal 32 and the second electrode plate 42 are electrically connected.

[0148] Specifically, in an embodiment where the adapter plate assembly 100 includes a second support frame 1104, after the second electrode sheet 42 of the battery cell 40 is welded to the second adapter plate 13, the second support frame 1104 can fix the second adapter plate 13, thereby facilitating the installation of the adapter plate assembly 100 into the shell 200 of the single battery cell 1. After the battery cell 40 equipped with the adapter plate assembly 100 is installed into the shell 200 of the single battery cell 1, the second support frame 1104 can support the second adapter plate 13, thereby facilitating the welding of the second electrode terminal 32 and the second adapter plate 13, which is beneficial to improving the installation efficiency of the adapter plate assembly 100, thereby improving the production efficiency of the single battery cell 1.

[0149] As shown in Figures 9-11, in some embodiments, the first electrode terminal 31 has a first recess 310, which is recessed toward the first adapter plate 12, and the bottom wall of the first recess 310 is welded to the first adapter plate 12. By providing the first recess 310 on the first electrode terminal 31, the bottom wall of the first recess 310 can be welded to the first adapter plate 12 from the first recess 310, and then the first electrode terminal 31 and the first electrode plate 41 are electrically connected through the bottom wall of the first recess 310.

[0150] A first cover 51 is provided at the opening of the first recess 310. Providing the first cover 51 at the opening of the first recess 310 allows the first cover 51 to seal the opening of the first recess 310, thereby preventing debris from entering the first recess 310 and protecting the connection between the first electrode terminal 31 and the first adapter 12.

[0151] In some embodiments, the second electrode terminal 32 has a second recess 320, which is recessed toward the second adapter plate 13, and the bottom wall of the second recess 320 is welded to the second adapter plate 13. By setting the second recess 320 on the second electrode terminal 32, the bottom wall of the second recess 320 can be welded to the second adapter plate 13 from the second recess 320, and then the second electrode terminal 32 and the second electrode plate 42 are electrically connected through the bottom wall of the second recess 320.

[0152] A second cover 52 is provided at the opening of the second recess 320. Providing the second cover 52 at the opening of the second recess 320 allows the second cover 52 to seal the opening of the second recess 320, thereby preventing debris from entering the second recess 320 and protecting the connection between the second electrode terminal 32 and the second adapter 13.

[0153] As shown in FIG10 , in some embodiments, a liquid injection hole 2130 is provided on the mounting wall 213 of the housing 200, and a relief opening 101 is provided on the first adapter plate 12 or the second adapter plate 13. The relief opening 101 corresponds to the position of the liquid injection hole 2130. By providing the relief opening 101, the liquid injection hole 2130 can be avoided, thereby facilitating liquid injection.

[0154] As shown in FIG. 8 , in some embodiments, the single battery 1 further includes an insulating sheet 80 , which is disposed between the side wall 214 of the housing 200 and the battery cell 40 .

[0155] In some embodiments, a sealing member 60 is provided between the first electrode terminal 31 and the edge of the first opening 211 to ensure sealing between the first electrode terminal 31 and the edge of the first opening 211 .

[0156] In some embodiments, a sealing member 60 is provided between the second electrode terminal 32 and the edge of the second opening 212 , thereby ensuring sealing between the second electrode terminal 32 and the edge of the second opening 212 .

[0157] As shown in Figures 10 and 11, according to some embodiments of the present application, the single battery 1 also includes two first plastic sealing bodies 71, one of which is sleeved on the outside of the first electrode terminal 31 and clamped between the first electrode terminal 31 and the outer surface of the mounting wall 213, further ensuring the sealing between the first electrode terminal 31 and the mounting wall 213, and the other first plastic sealing body 71 is sleeved on the outside of the second electrode terminal 32 and clamped between the second electrode terminal 32 and the outer surface of the mounting wall 213, further ensuring the sealing between the second electrode terminal 32 and the mounting wall 213.

[0158] In some embodiments, the single battery 1 further includes a second plastic package 72 , which is sandwiched between the adapter assembly 100 and the inner surface of the mounting wall 213 , ensuring the sealing between the adapter assembly 100 and the mounting wall 213 .

[0159] Among them, the second plastic package body 72 is provided with a first opening 721 and a second opening 722. The first opening 721 corresponds to the position of the first opening 211, and the second opening 722 corresponds to the position of the second opening 212. The sealing member 60 provided between the first electrode terminal 31 and the edge of the first opening 211 is also sealed with the edge of the first opening 721, and the sealing member 60 provided between the second electrode terminal 32 and the edge of the second opening 212 is also sealed with the edge of the second opening 722.

[0160] The battery module according to the embodiment of the present application is described below with reference to the accompanying drawings.

[0161] The battery module of the present application includes the single battery 1 according to the above embodiment. In the technical solution of the embodiment of the present application, the production efficiency of the battery module is improved by adopting the single battery 1.

[0162] The following describes an electrical device according to an embodiment of the present application with reference to the accompanying drawings.

[0163] The electric device of the present application includes the battery module according to the above embodiment. In the technical solution of the embodiment of the present application, the above battery module is used to improve the production efficiency of the electric device.

[0164] It is understandable that other structures and operations of the single battery 1, battery module and electrical device according to the embodiment of the present application are known to ordinary technicians in this field and will not be described in detail here.

[0165] It should be noted that, unless there is any conflict, the embodiments and features in the embodiments of this application can be combined with each other.

[0166] The above are merely preferred embodiments of the present application and are not intended to limit the present application. Those skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A single cell battery, wherein: include: a housing, wherein the housing is provided with a first electrode terminal and a second electrode terminal; at least one battery cell, the battery cell being disposed in the housing and having a first electrode sheet and a second electrode sheet, the second electrode terminal being connected to the second electrode sheet; The adapter plate assembly is sandwiched between the shell and the battery core and includes a first adapter plate and a first support frame. The first adapter plate is supported on the first support frame and connected to the first electrode terminal and the first electrode plate.

2. The single cell according to claim 1, wherein: The first support frame is formed by an injection molding process using the first adapter piece as an insert.

3. The single cell according to claim 1, wherein: The first adapter plate is detachably connected to the first support frame.

4. The single cell according to claim 3, wherein: The first adapter plate is connected to the first support frame by snap-fitting or by fasteners.

5. The single cell according to claim 3, wherein: The first support frame comprises: a first mounting plate; At least one second mounting plate, wherein the second mounting plate is connected to the first mounting plate, and at least a portion of the first adapter plate is clamped between the first mounting plate and the second mounting plate.

6. The single cell according to claim 5, wherein: One of the first mounting plate and the second mounting plate has a fixing hole and the other has a fixing portion, the fixing portion being matched with the fixing hole.

7. The single cell according to claim 5, wherein: One of the first mounting plate and the second mounting plate has a first positioning hole and the other has a positioning portion. At least a portion of the first adapter plate has a second positioning hole. The positioning portion cooperates with the first positioning hole and the second positioning hole.

8. The single cell according to claim 1, wherein: Two ends of the first adapter plate are connected to the first supporting frame.

9. The single cell according to claim 8, wherein: The first support frame has at least one fixing slot, and at least one end of the first adapter piece is matched with the corresponding fixing slot.

10. The single cell according to claim 1, wherein: The first adapter comprises: an electrode terminal connection portion; an electrode sheet connecting portion, the electrode sheet connecting portion being connected to the electrode terminal connecting portion; Wherein, the electrode terminal connecting portion and the electrode sheet connecting portion are both connected to the first supporting frame.

11. The single cell according to claim 10, wherein: One end of the electrode sheet connecting portion is connected to one end of the electrode terminal connecting portion, and the other end of the electrode sheet connecting portion and the other end of the electrode terminal connecting portion respectively form two ends in the length direction of the first adapter sheet; The electrode sheet connection portion includes a plurality of connection sheets, the arrangement direction of the plurality of connection sheets is perpendicular to the length direction of the first adapter sheet, and the one end of the electrode terminal connection portion is connected between two adjacent connection sheets.

12. The single cell according to any one of claims 1 to 11, wherein: The first electrode terminal and the second electrode terminal are disposed on the same side wall or different side walls of the housing.

13. The single cell according to any one of claims 1 to 11, wherein: The adapter plate assembly further includes a second adapter plate, and the second electrode terminal is connected to the second electrode plate via the second adapter plate.

14. The single cell according to claim 13, wherein: One of the first adapter plate and the second adapter plate is a copper plate, and the other is an aluminum plate.

15. The single cell according to claim 13 or 14, wherein: The adapter plate assembly further includes a second support frame, and the second adapter plate is supported on the second support frame.

16. The single cell according to claim 15, wherein: The first support frame has a first mounting opening for accommodating the first electrode terminal and the first electrode sheet, and both ends of the first adapter sheet are connected to the edge of the first mounting opening; The second supporting frame has a second mounting opening for accommodating the second electrode terminal and the second electrode sheet, and both ends of the second adapter sheet are connected to the edge of the mounting opening.

17. The single cell according to claim 16, wherein: The adapter plate assembly includes a bracket extending along a first direction, and the bracket includes a first support frame and a second support frame. The first support frame and the second support frame are arranged and connected in the first direction.

18. The single cell according to claim 17, wherein: Both ends of the first adapter plate in the second direction are connected to the edge of the first mounting opening; and / or both ends of the second adapter plate in the second direction are connected to the edge of the second mounting opening, and the second direction is perpendicular to the first direction.

19. The single cell according to claim 17, wherein: Both ends of the first adapter plate in the first direction are connected to the edge of the first installation opening; and / or both ends of the second adapter plate in the first direction are connected to the edge of the second installation opening.

20. The single cell according to any one of claims 13 to 19, wherein: The shell has a mounting wall, the mounting wall has a first opening and a second opening, the first electrode terminal is arranged at the first opening, the second electrode terminal is arranged at the second opening, the battery cell is arranged opposite to the mounting wall, and the adapter plate assembly is clamped between the mounting wall and the battery cell.

21. The single cell according to claim 20, wherein: The housing comprises: a shell body, wherein one end of the shell body has an open opening; an end cover, the end cover being provided on the shell body to open and close the opening; The mounting wall is provided at the other end of the shell body and is arranged opposite to the open opening, and the mounting wall and the side wall of the shell body are integrally formed.

22. The single cell according to claim 20 or 21, wherein: The first adapter plate and the first electrode terminal are connected together, as are the second adapter plate and the second electrode terminal through a penetration welding process.

23. The single cell according to any one of claims 20 to 22, wherein: The first electrode terminal has a first recessed portion that is recessed toward the first adapter plate. The bottom wall of the first recess is welded to the first adapter plate. A first cover is provided at the opening of the first recess.

24. The single cell according to any one of claims 20 to 23, wherein: The second electrode terminal has a second recessed portion that is recessed toward the second adapter plate. The bottom wall of the second recessed portion is welded to the second adapter plate. A second cover is provided at the opening of the second recessed portion.

25. The single cell according to any one of claims 20 to 24, wherein: A sealing member is provided between the first electrode terminal and the edge of the first opening, and between the second electrode terminal and the edge of the second opening.

26. A battery module, wherein: The method comprises a single cell according to any one of claims 1 to 25.

27. An electrical device, wherein: Comprising the battery module according to claim 26.

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