Battery and electric device

Abstract

The utility model relates to a battery and an electric device. The battery comprises at least two battery cells, wherein each battery cell comprises a conductive terminal; the conductive parts are in one-to-one correspondence with the conductive terminals of all the battery monomers, and the conductive parts are detachably connected with the corresponding conductive terminals; and the confluence piece is fixedly connected with the at least two conductive pieces. According to the battery and the electric device, the assembly difficulty can be reduced, and the assembly efficiency can be improved.

Description

Technical Field

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

[0002] As the core component of energy storage and conversion, batteries have been widely used in new energy vehicles, energy storage power stations and other fields.

[0003] Taking the application of batteries in new energy vehicles as an example, it is well known that the current generated by the battery cells in the battery reaches the vehicle drive unit through the busbar and high-voltage plug-in, thereby driving the vehicle. However, during the process of matching the conductive terminals of the battery cells with the plug-in structure of the busbar, the manufacturing tolerances cause the conductive terminals and the plug-in structure of the busbar to not match each other, which increases the difficulty of assembling the busbar and the battery cells and reduces the assembly efficiency. Utility Model Content

[0004] Based on this, it is necessary to provide a battery and an electrical device that can reduce the difficulty of assembly and improve the efficiency of assembly in order to solve the above problems.

[0005] A battery, comprising:

[0006] at least two battery cells, the battery cells comprising conductive terminals;

[0007] A conductive member, wherein the conductive member corresponds to the conductive terminals of all the battery cells one by one, and the conductive member and the corresponding conductive terminals are detachably connected; and

[0008] A busbar is fixedly connected to at least two of the conductive members.

[0009] In some embodiments, the conductive member and the corresponding conductive terminal are connected by a concave-convex fitting snap-fit ​​manner.

[0010] In some embodiments, a plug-in slot is provided on the conductive terminal;

[0011] The conductive member comprises an inserting portion and a mounting portion extending circumferentially around the inserting portion, the inserting portion is inserted into the inserting slot, and the mounting portion is fixedly connected to the current collector.

[0012] In some embodiments, a mounting hole is provided through the busbar, the mounting portion is overlapped on a side of the busbar facing away from the battery cell and connected to a surface of the busbar, and the plug portion is provided through the mounting hole.

[0013] In some embodiments, an installation gap is defined between an outer side wall of the plug-in portion and a hole wall of the installation hole.

[0014] In some of the embodiments, the end surface of the conductive terminal is raised and configured to form a limiting boss, the limiting boss is circumferentially arranged around the notch of the plug-in slot, and the limiting boss extends into the mounting hole and cooperates with the mounting hole.

[0015] In some embodiments, a positioning hole is formed on the end surface of the mounting portion facing away from the plug-in portion.

[0016] In some embodiments, the conductive terminal is provided with a plug-in slot, and the conductive member has a plug-in portion; or, the conductive member is provided with a plug-in slot, and the conductive terminal has a plug-in portion;

[0017] The plug-in portion is inserted into the plug-in slot, and the end surface of the conductive member away from the conductive terminal is fixedly connected to the busbar.

[0018] In some embodiments, a gap is provided between the bottom wall of the inserting slot and the inserting portion.

[0019] In some embodiments, the battery further includes an elastic contact finger, which is disposed in the insertion slot and elastically abuts between the conductive member and the conductive terminal, and the elastic contact finger is electrically connected to the conductive member and the conductive terminal.

[0020] In some embodiments, the conductive member and the current collector are fixedly connected by welding or riveting.

[0021] An electrical device, comprising a battery as described in any one of the above embodiments, wherein the battery is used to provide electrical energy.

[0022] The above-mentioned battery and electrical device, by setting the conductive member and the busbar as two separately formed structures, during actual installation, before each conductive member and the busbar connected thereto are fixedly connected, the conductive member is first operated to move relative to the busbar to adjust the relative position between the conductive member and the corresponding conductive terminal, so that the conductive member and the corresponding conductive terminal are matched and can be installed, and then the conductive member and the busbar are fixed. In this way, the problems of manufacturing tolerance and high precision requirements for the position matching of the conductive member and the conductive terminal can be solved, the difficulty of assembly between the battery cell and the busbar is reduced, and the assembly efficiency is improved. In addition, the conductive terminal and the conductive member are detachably connected. Compared with the traditional welding method, when individual battery cells are damaged and need to be replaced, the conductive terminal and the conductive member can be disassembled, and the conductive member can be connected to the conductive terminal of the new battery cell to achieve quick and simple replacement of the battery cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1This is a schematic diagram of the structure of a battery in one embodiment of the present application;

[0024] Figure 2 for Figure 1 The cross-sectional view of the battery shown along the AA direction;

[0025] Figure 3 for Figure 2 An enlarged schematic diagram of a local structure B of the battery shown;

[0026] Figure 4 for Figure 1 The schematic diagram of the structure of the battery shown in FIG. 1 after removing the conductive parts and the busbar;

[0027] Figure 5 for Figure 4 An enlarged schematic diagram of a local structure C of the battery shown;

[0028] Figure 6 for Figure 4 The schematic diagram of the structure of the battery shown in FIG. 1 without the elastic contact fingers;

[0029] Figure 7 for Figure 1 A schematic diagram of the structure of the conductive member and the current collector in the battery shown;

[0030] Figure 8 for Figure 7 An exploded view of the battery shown;

[0031] Fig. 9 This is a schematic diagram of the structure of the conductive member and the busbar in other embodiments of the present application;

[0032] Fig.10 for Figure 1 Schematic diagram of the elastic contact finger structure in the battery shown.

[0033] Figure Number:

[0034] 1.Battery;

[0035] 10. Battery cell; 20. Conductive member; 30. Busbar; 40. Elastic contact finger;

[0036] 11. Conductive terminal; 12. Insertion slot; 13. Limiting boss; 14. Installation gap;

[0037] 21. Installation part; 22. Plug-in part; 23. Positioning hole; 24. Welding area;

[0038] 31. Mounting hole;

[0039] 41. Support portion; 42. Elastic portion. DETAILED DESCRIPTION

[0040] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0041] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0042] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0043] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0044] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0045] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0046] See also Figure 1 At present, from the perspective of market development, the application of battery 1 is becoming more and more extensive. Battery 1 is not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, as well as military equipment and aerospace and other fields. With the continuous expansion of the application field of battery 1, its market demand is also constantly expanding.

[0047] Taking the application of battery 1 in new energy vehicles as an example, it is well known that the current generated by the battery cell 10 in the battery 1 reaches the vehicle drive unit through the busbar 30 and the high-voltage plug-in, thereby driving the vehicle. However, the conductive terminal 11 of the battery cell 10 of the battery 1 and the plug-in structure of the busbar 30 are mostly an integrated structure. During the assembly process, the conductive terminal 11 and the plug-in structure of the busbar 30 are not matched due to the influence of manufacturing tolerances, resulting in increased difficulty in assembling the busbar 30 and the battery cell 10, and reduced assembly efficiency.

[0048] Please refer again Figure 1 , and also see Figure 2 , Figure 3 , Figure 7 and Figure 8 In order to alleviate the above problems, the applicant has designed a battery 1 after in-depth research. The battery 1 includes at least two battery cells 10, a conductive member 20 and a busbar 30. Each battery cell 10 includes a conductive terminal 11. The conductive member 20 corresponds to the conductive terminals 11 of all battery cells 10 one by one. The conductive member 20 and the corresponding conductive terminal 11 are detachably connected. The busbar 30 is fixedly connected to at least two conductive members 20.

[0049] It should be noted that the detachable connection between the conductive member 20 and the conductive terminal 11 means that the conductive member 20 and the conductive terminal 11 can provide a stable and reliable electrical connection when connected to ensure the overcurrent of the battery 1. At the same time, the conductive member 20 and the conductive terminal 11 can be disassembled and disconnected without damaging the various structural parts, and can be assembled and connected again.

[0050] Specifically, the battery cell 10 can be a secondary battery or a primary battery; it can also be a lithium-sulfur battery, a sodium-ion battery or a magnesium-ion battery, but is not limited thereto. Two or more battery cells 10 can be arranged in a row along the thickness direction of a battery cell 10 to form a battery row. The battery cell 10 includes two conductive terminals 11, one of which is a positive conductive terminal and the other is a negative conductive terminal. The positive conductive terminal and the negative conductive terminal of the battery cell 10 can be arranged at the same end or opposite ends of the battery cell 10. The positive conductive terminals and the negative conductive terminals of all battery cells 10 can be arranged alternately and in a row to form two rows of mixed conductive terminal rows, or the positive conductive terminals of all battery cells 10 can be arranged in a row to form a row of positive conductive terminal rows, and the negative conductive terminals of all battery cells 10 can be arranged in a row to form a row of negative conductive terminal rows.

[0051] The conductive member 20 corresponds to the conductive terminals 11 of all battery cells 10 one by one, that is, each conductive terminal 11 has a corresponding conductive member 20, and different conductive members 20 correspond to different conductive terminals 11. The conductive member 20 and the corresponding conductive terminal 11 can be detachably connected together by means of concave-convex matching snap connection, or snap-on snap connection, etc.

[0052] The busbar 30 is fixedly connected to at least two conductive members 20, that is, the busbar 30 and the conductive member 20 are two separately arranged structural members. When the battery 1 is assembled, the busbar 30 is fixedly connected to the conductive member 20 to achieve electrical connection. For example, the conductive member 20 and the busbar 30 are fixedly connected by any one of welding and riveting. That is to say, each conductive member 20 can be fixedly connected to the busbar 30 by welding or riveting. This connection method is simple and reliable, and can improve the stability and reliability of the connection between the conductive member 20 and the busbar 30. For the convenience of explanation, the following embodiments are all described by taking the fixed connection between the conductive member 20 and the busbar 30 by welding as an example.

[0053] Specifically, taking the case where there are more than two battery cells 10 and all battery cells 10 are connected in series, every two conductive members 20 connected to every two adjacent positive conductive terminals and negative conductive terminals in the same mixed conductive terminal row may be connected through a busbar 30 to achieve connection between the busbar 30 and two conductive members 20. Alternatively, all conductive members 20 connected to all positive conductive terminals and negative conductive terminals in the same mixed conductive terminal row may be connected through the same busbar 30 to achieve connection between the busbar 30 and more than two conductive members 20.

[0054] Taking the case where there are more than two battery cells 10 and all battery cells 10 are connected in parallel as an example, every two conductive members 20 connected to every two adjacent positive conductive terminals in the positive conductive terminal row may be connected through a busbar 30 to achieve connection between the busbar 30 and the two conductive members 20, and every two conductive members 20 connected to every two adjacent negative conductive terminals in the negative conductive terminal row may also be connected through a busbar 30 to achieve connection between the busbar 30 and the two conductive members 20. Alternatively, all conductive members 20 connected to all positive conductive terminals in the positive conductive terminal row may be connected through the same busbar 30, and all conductive members 20 connected to all negative conductive terminals in the negative conductive terminal row may also be connected through the same busbar 30 to achieve connection between the busbar 30 and more than two conductive members 20.

[0055] Specifically, the number of conductive members 20 connected to the same busbar 30 can be set according to the requirements and is not limited here. For the convenience of description, the following embodiments are described as an example in which the busbar 30 is connected to two conductive members 20.

[0056] In the conventional battery 1, the conductive member 20 and the busbar 30 are integrally formed, so that the conductive member 20 and the busbar 30 cannot move relative to each other. Since the conductive terminals 11, the conductive members 20 and the connectors all have manufacturing tolerances during the manufacturing process, when one conductive member 20 on the busbar 30 is connected to the conductive terminal 11 of a battery cell 10, due to the manufacturing tolerances, another conductive member 20 on the busbar 30 cannot be aligned with the conductive terminal 11 of another battery cell 10 in position, and it is difficult for the other conductive member 20 to be connected to the conductive terminal 11 of another battery cell 10, which increases the difficulty of assembly and reduces the assembly efficiency.

[0057] In the present application, the conductive member 20 and the busbar 30 are set as two separately formed structures. During the actual installation, before each conductive member 20 is fixedly connected to the busbar 30 connected thereto, the conductive member 20 is first operated to move relative to the busbar 30 to adjust the relative position between the conductive member 20 and the corresponding conductive terminal 11, so that the conductive member 20 and the corresponding conductive terminal 11 are matched and can be installed, and then the conductive member 20 and the busbar 30 are fixed. In this way, the problems of manufacturing tolerance and high precision of the position matching between the conductive member 20 and the conductive terminal 11 can be solved, the difficulty of assembling the battery cell 10 and the busbar 30 is reduced, and the assembly efficiency is improved. In addition, the conductive terminal 11 and the conductive member 20 are detachably connected. Compared with the traditional welding method, when an individual battery cell 10 is damaged and needs to be replaced, the conductive terminal 11 and the conductive member 20 can be disassembled, and the conductive member 20 can be connected to the conductive terminal 11 of the new battery cell 10 to achieve quick and simple replacement of the battery cell 10.

[0058] In some optional embodiments, the conductive member 20 and the corresponding conductive terminal 11 are connected by a concave-convex fitting snap-fitting method. The method of realizing the detachable connection between the conductive member 20 and the conductive terminal 11 by the concave-convex fitting snap-fitting method is simple and easy to operate, and the replacement speed is fast.

[0059] See also Figures 3 to 9 In some optional embodiments, a plug-in slot 12 is provided on the conductive terminal 11, and the conductive member 20 has a plug-in portion 22 and a mounting portion 21 extending circumferentially around the plug-in portion 22, the plug-in portion 22 is plugged into the plug-in slot 12, and the mounting portion 21 is fixedly connected to the busbar 30.

[0060] As an example, the conductive member 20 may be disposed on a side of the busbar 30 facing the conductive terminal 11 , or the conductive member 20 may be passed through the busbar 30 .

[0061] By opening the insertion slot 12 on the conductive terminal 11 and directly pressing the insertion portion 22 into the insertion slot 12 , the conductive terminal 11 and the conductive member 20 can be installed. This method is simple and easy to operate.

[0062] Please refer again Figure 3 , Figures 6 to 8In some optional embodiments, a mounting hole 31 is provided through the busbar 30, the mounting portion 21 overlaps the side of the busbar 30 facing away from the battery cell 10 and is connected to the surface of the busbar 30, and the plug-in portion 22 is passed through the mounting hole 31 and inserted into the plug-in slot 12. By providing the mounting hole 31, the positioning installation between the conductive member 20 and the busbar 30 can be achieved. The mounting portion 21 overlaps the side of the busbar 30 facing away from the battery cell 10 and is connected to the surface of the busbar 30. In this case, the projections of the mounting portion 21 and the busbar 30 in the thickness direction of the busbar 30 have an overlapping projection area, so as to facilitate the connection between the mounting portion 21 and the busbar 30.

[0063] Taking the welding of the mounting portion 21 and the busbar 30 as an example, a welding area 24 can be provided on the mounting portion 21, and the welding area 24 is annular and extends along the circumference of the mounting portion 21. And the projection of the welding area 24 in the thickness direction of the busbar 30 completely falls on the busbar 30. When the plug-in portion 22 is plugged into the conductive terminal 11, the welding area 24 is welded to achieve the welding of the mounting portion 21 and the busbar 30.

[0064] Furthermore, in some optional embodiments, an installation gap 14 is defined between the outer wall of the plug-in portion 22 and the hole wall of the installation hole 31. The installation gap 14 allows the conductive member 20 to move a small distance relative to the busbar 30 in the installation hole 31, so as to adjust the relative position of the conductive member 20 and the conductive terminal 11 and reduce the adverse effects of manufacturing tolerances.

[0065] See also Figure 3 , Figure 5 and Figure 6 In some optional embodiments, the end surface of the conductive terminal 11 is raised and structured to form a limiting boss 13, the limiting boss 13 is arranged around the circumference of the slot of the plug-in slot 12, and the limiting boss 13 extends into the mounting hole 31 and cooperates with the mounting hole 31. When installing the busbar 30, the limiting boss 13 can play a role in positioning and installing the busbar 30, so as to achieve rapid installation of the busbar 30. Taking the busbar 30 with the mounting hole 31 as an example, the limiting boss 13 can be positioned and matched with the mounting hole 31 of the busbar 30 first, and then the conductive member 20 is inserted from the side of the busbar 30 facing away from the conductive terminal 11, until the plug-in portion 22 is inserted into the plug-in slot 12, and the mounting portion 21 overlaps the busbar 30, and finally, a welding gun is used to weld the mounting portion 21 and the busbar 30.

[0066] It is worth mentioning that the inner diameter of the mounting hole 31 is larger than the outer diameter of the limiting boss 13, so that when the busbar 30 is mounted on the conductive terminal 11, the busbar 30 is less affected by the center distance tolerance of the conductive terminal 11, so that the busbar 30 can be positioned and installed with the conductive terminals 11 of multiple rows of battery cells 10 at the same time. Moreover, after the busbar 30 is installed in place, the limiting boss 13 can limit the maximum distance of movement of the busbar 30, which facilitates the subsequent insertion of the conductive member 20.

[0067] Please refer again Figure 3 In some optional embodiments, a positioning hole 23 is provided on the end surface of the mounting portion 21 facing away from the plug-in portion 22. The positioning hole 23 is used for positioning the plug-in portion 22 before it is plugged into the plug-in slot 12. Specifically, in order to improve assembly efficiency, an automated assembly device is generally used to assemble the battery 1. During the assembly of the conductive member 20 and the conductive terminal 11, the presence of the positioning hole 23 is detected by an identification detection member, and when the central axis of the positioning hole 23 coincides with the central axis of the plug-in slot 12, the assembly device presses the plug-in portion 22 so that the plug-in portion 22 and the plug-in slot 12 are plugged into each other. It can be seen that the provision of the positioning hole 23 facilitates the positioning and assembly of the conductive terminal 11 and the conductive member 20.

[0068] Combination Figure 3 and Fig. 9 In some embodiments, the conductive terminal 11 is provided with a plug-in slot 12, and the conductive member 20 has a plug-in portion 22; or, the conductive member 20 is provided with a plug-in slot 12, and the conductive terminal 11 has a plug-in portion 22; wherein the plug-in portion 22 is inserted into the plug-in slot 12, and the end surface of the conductive member 20 away from the conductive terminal 11 is fixedly connected to the busbar 30. For example, the conductive member 20 is located on the side of the busbar 30 facing the battery cell 10, and has a plug-in portion 22, and the plug-in portion 22 is away from the end surface of the conductive terminal 11 and is fixedly connected to the surface of the busbar 30 facing the battery cell 10. The design of the plug-in portion 22 and the plug-in slot 12 can realize the rapid assembly between the conductive member 20 and the conductive terminal 11.

[0069] In some optional embodiments, a gap is provided between the bottom wall of the insertion slot 12 and the insertion portion 22. Taking the insertion slot 12 provided on the conductive terminal 11 and the insertion portion 22 provided on the conductive member 20 as an example, a gap is provided between the end surface of the insertion portion 22 away from the current collector 30 and the bottom wall of the insertion slot 12. Figure 1 , Figure 2 and Figure 3 Taking the state of the middle battery 1 as an example, the end face of the plug-in portion 22 away from the busbar 30 is located above the bottom wall of the plug-in slot 12 and is spaced apart from the bottom wall of the plug-in slot 12. This ensures that when the mounting portion 21 of the conductive member 20 is pressed and welded on the busbar 30, problems such as cold solder joints and explosion spots due to uneven gaps can be avoided.

[0070] In some optional embodiments, the battery 1 further includes an elastic contact finger 40, which is disposed in the insertion slot 12 and elastically abuts between the conductive member 20 and the conductive terminal 11, and the elastic contact finger 40 is electrically connected to the conductive member 20 and the conductive terminal 11. For example, taking the case where the conductive terminal 11 is provided with the insertion slot 12 and the conductive member 20 has the insertion portion 22, the elastic contact finger 40 elastically abuts between the insertion portion 22 and the slot side wall of the insertion slot 12, and the elastic contact finger 40 is electrically connected to the insertion portion 22 and the conductive terminal 11.

[0071] See also Figure 5 and Fig.10 Specifically, the elastic contact finger 40 includes two support portions 41 arranged at intervals, and a plurality of elastic portions 42 connected between the two support portions 41. The outer diameter of the support portion 41 is adapted to the inner diameter of the plug-in slot 12 so that the elastic contact finger 40 can be snapped into the plug-in slot 12. Each elastic portion 42 elastically abuts between the conductive member 20 and the conductive terminal 11.

[0072] By providing the elastic contact finger 40 , the elastic contact finger 40 can adjust the size of the space in the plug slot 12 that cooperates with the plug part 22 through deformation, and can adapt to the plug part 22 with a reasonable manufacturing tolerance, so the manufacturing accuracy requirements for the conductive member 20 and the conductive terminal 11 are reduced.

[0073] Take the case where the conductive terminal 11 is provided with a plug-in slot 12 and the conductive member 20 has a plug-in portion 22 as an example. During actual installation, the plug-in portion 22 is inserted into the space enclosed by all the elastic portions 42 and abuts against each elastic portion 42. The elastic force of the elastic portion 42 applied to the plug-in portion 22 can fix the position of the plug-in portion 22. At this time, the busbar 30 is also in a fixed state due to the press-fitting of the plug-in portion 22. In this case, the relative position between the busbar 30 and the conductive member 20 is fixed to facilitate the subsequent laser welding of the busbar 30 and the conductive member 20. In other words, the setting of the elastic contact finger 40, relying on the elastic force of the elastic contact finger 40, can make the conductive member 20 and the hole wall of the mounting hole 31 on the busbar 30 abut tightly together, and even without a press-fitting fixture, the conductive member 20 and the busbar 30 can be well limited and welded.

[0074] The present application also provides an electrical device, which includes a battery 1 as described in any one of the above embodiments, and the battery 1 is used to provide electrical energy.

[0075] The battery 1 in the present application has the effects described in any of the above embodiments, so it will not be described in detail here.

[0076] The electrical device may be, but is not limited to, a mobile phone, a tablet, a laptop, an electric toy, an electric tool, a battery car, an electric car, a ship, a spacecraft, etc. The electric toy may include a fixed or mobile electric toy, such as a game console, an electric car toy, an electric ship toy, and an electric airplane toy, etc. The spacecraft may include an airplane, a rocket, a space shuttle, and a spacecraft, etc.

[0077] It should be understood that the technical solutions described in the embodiments of the present application are not limited to being applicable to the electrical devices described above.

[0078] The above-mentioned battery 1 and the electrical device are provided with the conductive member 20 and the busbar 30 as two separately formed structures. When actually installed, before each conductive member 20 is fixedly connected to the busbar 30 connected thereto, the conductive member 20 is first operated to move relative to the busbar 30 to adjust the relative position between the conductive member 20 and the corresponding conductive terminal 11, so that the conductive member 20 and the corresponding conductive terminal 11 are matched in position and can be installed, and then the conductive member 20 and the busbar 30 are fixed. In this way, the problems of manufacturing tolerance and high precision requirements for the position matching of the conductive member 20 and the conductive terminal 11 can be solved, the difficulty of assembling the battery cell 10 and the busbar 30 is reduced, and the assembly efficiency is improved. In addition, the conductive terminal 11 and the conductive member 20 are detachably connected. Compared with the traditional welding method, when an individual battery cell 10 is damaged and needs to be replaced, the conductive terminal 11 and the conductive member 20 can be disassembled, and the conductive member 20 can be connected to the conductive terminal 11 of the new battery cell 10 to achieve quick and simple replacement of the battery cell 10.

[0079] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0080] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A battery, characterized in that: The battery comprises: At least two battery cells (10), each of which comprises a conductive terminal (11); A conductive member (20), wherein the conductive member (20) corresponds to the conductive terminals (11) of all the battery cells (10) one by one, and the conductive member (20) and the corresponding conductive terminals (11) are detachably connected; and A busbar (30), wherein the busbar (30) is fixedly connected to at least two of the conductive members (20).

2. The battery according to claim 1, characterized in that The conductive member (20) and the corresponding conductive terminal (11) are connected by means of a concave-convex fitting snap-fit ​​connection.

3. The battery according to claim 2, characterized in that The conductive terminal (11) is provided with a plug-in slot (12); The conductive member (20) comprises a plug-in portion (22) and a mounting portion (21) extending circumferentially around the plug-in portion (22); the plug-in portion (22) is plugged into the plug-in slot (12); and the mounting portion (21) is fixedly connected to the current collector (30).

4. The battery according to claim 3, characterized in that The busbar (30) is provided with a mounting hole (31) extending therethrough, the mounting portion (21) overlaps the side of the busbar (30) facing away from the battery cell (10) and is connected to the surface of the busbar (30), and the plug-in portion (22) is provided through the mounting hole (31).

5. The battery according to claim 4, characterized in that An installation gap (14) is defined between the outer side wall of the plug-in portion (22) and the hole wall of the installation hole (31).

6. The battery according to claim 4, characterized in that The end surface of the conductive terminal (11) is raised and configured to form a limiting boss (13), the limiting boss (13) is arranged around the circumference of the slot of the plug-in slot (12), and the limiting boss (13) extends into the mounting hole (31) and cooperates with the mounting hole (31).

7. The battery according to claim 3, characterized in that A positioning hole (23) is formed on the end surface of the mounting portion (21) facing away from the plug-in portion (22).

8. The battery according to claim 2, characterized in that The conductive terminal (11) is provided with an inserting slot (12), and the conductive member (20) has an inserting portion (22); or, the conductive member (20) is provided with an inserting slot (12), and the conductive terminal (11) has an inserting portion (22); The plug-in portion (22) is inserted into the plug-in slot (12), and the end surface of the conductive member (20) away from the conductive terminal (11) is fixedly connected to the busbar (30).

9. The battery according to any one of claims 3 to 8, characterized in that: A gap is provided between the bottom wall of the insertion groove (12) and the insertion portion (22).

10. The battery according to any one of claims 3 to 8, characterized in that: The battery further comprises an elastic contact finger (40), wherein the elastic contact finger (40) is disposed in the insertion slot (12) and elastically abuts between the conductive member (20) and the conductive terminal (11), and the elastic contact finger (40) is electrically connected to the conductive member (20) and the conductive terminal (11).

11. The battery according to any one of claims 1 to 8, characterized in that: The conductive member (20) and the current collector (30) are fixedly connected by welding or riveting.

12. An electrical device, characterized in that: The electrical device comprises a battery as described in any one of items 1 to 11 above, and the battery is used to provide electrical energy.

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