Battery assembly and electric device

Abstract

The utility model relates to the technical field of energy storage devices, and particularly discloses a battery assembly, which comprises a battery, the battery is provided with a first surface and side walls arranged on the periphery of the first surface, at least one side wall of the battery is a limiting surface, and the distance from one end close to the first surface to the other opposite end of the limiting surface to a reference surface is gradually increased or gradually reduced; and the clamping piece is arranged corresponding to the limiting surface, and the clamping piece is in surface contact with the limiting surface. According to the battery assembly provided by the utility model, the battery can be detachably mounted in the battery compartment, so that the battery can be conveniently disassembled and assembled, the battery is convenient to maintain, the maintenance cost is reduced, and the service life of an electric device provided with the battery assembly is favorably prolonged. The invention further discloses a power utilization device which also has the above technical effects.

Description

Technical Field

[0001] The present application relates to the technical field of energy storage devices, and more specifically, to a battery assembly and an electrical device. Background Art

[0002] A battery generally refers to a device that can generate electrical energy. Using a battery as an energy source, it has a stable voltage, a stable current, can supply power stably for a long time, is less affected by the outside world, and the charging and discharging operations are simple and easy. Therefore, it is usually used in devices for powering external devices (such as portable or mobile electronic devices like mobile phones, tablet computers, laptop computers, etc.).

[0003] Currently, the main fixing methods for a portable battery and the battery compartment on the whole machine are mainly sticker and double-sided adhesive. However, the battery is fixed to the whole machine by sticker and double-sided adhesive, which is inconvenient to disassemble. Usually, professional personnel need to perform special operations to remove the battery, resulting in high maintenance costs. Even the battery cannot be removed from the battery compartment. Therefore, when the battery fails, the whole machine needs to be replaced, which further affects the service life of the whole machine. Utility Model Content

[0004] In view of this, the purpose of the present application is to provide a battery assembly and an electrical device, and the structural design of the battery assembly and the electrical device can effectively solve the problem of inconvenient battery disassembly.

[0005] In order to achieve the above purpose, the present application provides the following technical solutions:

[0006] A battery assembly, comprising:

[0007] A battery, the battery having a first surface and side walls provided around the first surface, at least one side wall of the battery being a limiting surface, the distance from one end close to the first surface to the opposite end to a reference plane gradually increasing or gradually decreasing, the reference plane being perpendicular to the first surface, the battery core of the battery including a core body, a top seal portion, a side seal portion, and a bending portion, the top seal portion being provided on the top end face of the core body, the side seal portion being provided on the side end face of the core body, the bending portion being connected to the top of the side seal portion, and the bending portion being attached to the top end face, and the portion of the top seal portion opposite to the bending portion being attached to the outer surface of the bending portion;

[0008] A engaging member, correspondingly provided with the limiting surface, the engaging member being in surface contact with the limiting surface.

[0009] Optionally, in the above battery assembly, the limiting surface is an inclined surface inclined relative to the first surface;

[0010] Or, the limiting surface is an arc surface.

[0011] Optionally, in the above battery assembly, the two side walls of the battery opposite to each other in the first direction are respectively the limiting surfaces, and engaging members are respectively provided corresponding to the two limiting surfaces;

[0012] The distances from the two limiting surfaces to the reference surface gradually increase or gradually decrease from one end close to the first surface to the opposite end, or one gradually increases while the other gradually decreases.

[0013] Optionally, in the above battery assembly, the head end face of the battery cell is provided with a tab, the battery includes a support frame disposed at the head end and two sides of the battery cell, and the limiting surface includes the outer side wall of the support frame on at least one of the two opposite sides of the battery cell.

[0014] Optionally, in the above battery assembly, along the extending direction of the engaging member, the top end of the engaging member protrudes from the top end of the support frame.

[0015] Optionally, in the above battery assembly, the battery further includes a protection board, the protection board is provided with a battery cell connection portion and a connector, and the battery cell connection portion is connected to the tab;

[0016] The support frame is wrapped outside the protection board, and the external connection end of the connector is located outside the support frame.

[0017] Optionally, in the above battery assembly, the protection board is disposed parallel to the head end face of the battery cell, and the surface of the protection board provided with the battery cell connection portion faces the head end face or faces away from the head end face.

[0018] Optionally, in the above battery assembly, the rear end of the protection board is flush with the first surface, and at least part of the rear end of the protection board is flush with the rear end face of the support frame;

[0019] Or,

[0020] There are gaps respectively between the rear end of the protection board and the first surface and between the front end of the protection board and the second surface of the battery cell, and the second surface is opposite to the first surface.

[0021] Optionally, in the above battery assembly, the rear end of the protection board is provided with a notch, and the support frame is provided with a protruding portion having the same shape as the notch, and the protruding portion is disposed in the notch.

[0022] Optionally, in the above battery assembly, the thickness of the bending portion is not greater than the height of the protection board.

[0023] Optionally, in the above battery assembly, the battery further includes a label disposed outside the battery cell and the support frame, and the label is connected to both the support frame and the battery cell.

[0024] Applying the battery assembly provided by the present application, by using the side wall on at least one side of the battery as the limiting surface, and the distance from one end to the other end of the limiting surface gradually increases or gradually decreases relative to the reference surface, and a clamping member is arranged in cooperation with the limiting surface. When installing the battery, the battery is placed in the battery compartment, and the other side walls of the battery except the limiting surface can cooperate with the side walls of the installation groove for limiting. Then, the clamping member is placed in the installation groove so that the clamping member is in surface contact with the limiting surface, and then the clamping member can be detachably connected to the battery compartment. Since the abutting force between the clamping member and the limiting surface can be decomposed into a component force in the first direction along the first surface and a component force in the second direction perpendicular to the first surface, the clamping member effectively restricts the displacement of the battery in the above two directions, thereby reliably installing the battery in the battery compartment. When disassembling, only by disassembling the clamping member from the battery compartment, the clamping member and the battery can be taken out of the battery compartment.

[0025] In summary, for the battery assembly provided by the present application, the battery is detachably installed in the battery compartment, so that the disassembly and assembly of the battery can be conveniently realized, thus facilitating the battery maintenance, reducing the maintenance cost, and being beneficial to extending the service life of the electrical device provided with the battery assembly.

[0026] In addition, by the cooperation of the limiting surface and the clamping member, while realizing the limiting in the first direction, the limiting in the second direction can be realized without occupying the space in the second direction, reducing the space occupied by the limiting structure, which is beneficial to the miniaturization design of the battery assembly and the improvement of the battery capacity.

[0027] Furthermore, in the present application, the bending part is attached to the top surface. Since the thickness of the bending part is usually smaller than its length, by arranging the bending part to be attached to the top surface, a larger-sized battery core can be set under the condition that the overall occupied space of the battery is the same, thereby improving the battery capacity.

[0028] To achieve the above object, the present utility model also provides an electrical device, and the electrical device includes any one of the above battery assemblies. Since the above battery assembly has the above technical effects, the electrical device having the battery assembly should also have the corresponding technical effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0030] Figure 1 It is an exploded structural schematic diagram of the battery assembly in a specific embodiment of the present application;

[0031] Figure 2Schematic diagram of the cooperation between the battery module and the battery compartment;

[0032] Figure 3 Explosion schematic diagram of the cooperation between the battery module and the battery compartment;

[0033] Figure 4 Top view schematic diagram of the assembled state of the battery module;

[0034] Figure 5 Schematic diagram of the structure of the battery cell in a specific embodiment of the present application;

[0035] Figure 6 Top view schematic diagram of the battery in a specific embodiment of the present application;

[0036] Figure 7 For Figure 6 Front view schematic diagram;

[0037] Figure 8 Axonometric view schematic diagram of the battery in a specific embodiment of the present application;

[0038] Figure 9 Explosion schematic diagram of the battery (support frame not shown) in a specific embodiment of the present application;

[0039] Figure 10 Top view schematic diagram of the battery (support frame not shown) in a specific embodiment of the present application;

[0040] Figure 11 For Figure 10 A - A cross - sectional view;

[0041] Figure 12 For Figure 11 Local enlarged schematic diagram of part A in;

[0042] Figure 13 Schematic diagram of the structure of the protection board in a specific embodiment of the present application;

[0043] Figure 14 Explosion schematic diagram of the battery in another specific embodiment of the present application.

[0044] Reference numerals:

[0045] 10 - Battery module; 20 - Battery compartment; 21 - Installation groove; 211 - Bottom surface of the installation groove; 212 - Top side wall; 22 - Enclosure; 23 - Bottom case; 24 - Cover body;

[0046] 100 - Battery; 101 - First surface; 102 - Side wall of the battery; 103 - Limiting surface; 104 - Second surface;

[0047] 110 - Battery cell; 120 - Tab; 130 - Support frame; 140 - Protection board; 150 - Label; 160 - Double - sided tape;

[0048] 111 - Battery cell body; 1111 - Top end face; 1112 - Side end face; 112 - Top sealing part; 113 - Side sealing part; 114 - Bending part;

[0049] 131 - Protrusion;

[0050] 141 - Battery cell connection part; 142 - Connector; 1421 - External connection end; 143 - Rear end of the protection board; 144 - Front end of the protection board; 145 - Notch;

[0051] 200 - Engaging part; 201 - Side wall of the engaging part. Detailed implementation mode

[0052] The embodiments of the present application disclose a battery assembly, a battery installation structure, a battery and an electrical device using the same, so as to facilitate the disassembly of the battery.

[0053] Next, the technical solutions in the embodiments of the present application will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0054] The inventors of the present application found in the process of implementing the present application that in the conventional integrated structure of the battery and the battery compartment, the battery is difficult to disassemble, the maintenance cost is high, and the service life of the device is short. In order to at least partially solve the above - mentioned existing defects, the present application provides a battery assembly. By setting at least one side wall of the battery as a limiting surface with gradually changing dimensions and correspondingly setting an engaging part, the engaging part is in surface contact with the limiting surface, and by using their abutting effect, the limiting in two mutually perpendicular directions is realized, and combined with the detachable connection between the engaging part and the battery compartment, the reliable fixed installation of the battery is realized.

[0055] Please refer to Figures 1 - 4 , in some embodiments, the battery assembly 10 provided by the present application includes a battery 100 and an engaging part 200. The two can be installed in the installation groove 21 of the battery compartment 20.

[0056] Among them, the battery 100 has a first surface 101 and side walls 102 provided around the first surface 101. When the battery 100 is installed in the battery compartment 20, the first surface 101 can face the bottom surface 211 of the installation groove 21, and specifically, the first surface 101 can be attached to the bottom surface 211 of the installation groove 21. In the case where a protruding structure is formed around the first surface 101, the first surface 101 may not contact the bottom surface 211 of the installation groove 21 either. At least one side wall 102 of the battery 100 is a limiting surface 103, and the distance from the end close to the first surface 101 to the opposite end to the reference plane gradually increases or gradually decreases, and the reference plane is perpendicular to the first surface 101. It can be understood that the end of the limiting surface 103 close to the first surface 101 is the end facing the bottom surface 211 of the installation groove 21 when the first surface 101 faces the bottom surface 211 of the installation groove 21. For the convenience of description, the direction perpendicular to the first surface 101 is denoted as the Z direction, the distance direction between the limiting surface 103 and the reference plane is denoted as the Y direction, and the direction perpendicular to both the Y direction and the Z direction is denoted as the X direction; the end of the limiting surface 103 close to the first surface 101 is denoted as the first end, and the opposite end is denoted as the second end. In the case where the cross-section of the battery 100 parallel to the first surface 101 is quadrilateral, at least one side wall corresponding to the side wall is integrally set as the limiting surface 103, that is, the distance from the first end to the second end to the reference plane of at least one side wall of the battery 100 changes gradually as a whole, and it can either gradually increase or gradually decrease. It should be noted that the term "gradually" mentioned here means that the above distance changes all the time, that is, the distances from any two lines parallel to the first surface 101 on the limiting surface 103 to the reference plane are different, and specifically, the change rate can be the same or different. With such a setting, at least one side wall 102 of the battery 100 is not a plane perpendicular to the first surface 101.

[0057] The engaging member 200 is correspondingly arranged with the limiting surface 103. It can be understood that in the case where the battery 100 is provided with one limiting surface 103, one engaging member 200 can be correspondingly arranged; in the case where the battery 100 is provided with multiple limiting surfaces 103, one engaging member 200 can be respectively arranged corresponding to each limiting surface 103, and the term "multiple" in this application refers to two or more. The engaging member 200 can be detachably connected to the battery compartment 20. Specifically, when installed, the engaging member 200 can be arranged between the side wall of the installation groove 21 and the limiting surface 103. In the Z direction, the end face of the engaging member 200 can be flush with the end of the limiting surface 103 to save the space occupied in the Z direction. The engaging member 200 is in surface contact with the limiting surface 103. Specifically, the side wall 201 of the engaging member 200 is in surface contact with the limiting surface 103.

[0058] Applying the battery assembly provided by the present application, by using the side wall 102 on at least one side of the battery 100 as the limiting surface 103, and the distance from one end to the other end of the limiting surface 103 gradually increases or gradually decreases relative to the reference surface, and the engaging member 200 is arranged in cooperation with the limiting surface 103. When installing the battery 100, place the battery 100 in the installation groove 21 of the battery compartment 20, and place the engaging member 200 in the installation groove 21 to make surface contact between the engaging member 200 and the limiting surface 103, and then the engaging member 200 can be detachably connected to the battery compartment 20. Since the abutting force between the engaging member 200 and the limiting surface 103 can be decomposed into a component force in the first direction along the first surface 101 and a component force in the second direction perpendicular to the first surface 101, the engaging member 200 effectively restricts the displacement of the battery 100 in the above two directions, thereby reliably installing the battery 100 in the battery compartment 20. In addition, the other side walls 102 of the battery 100 except the limiting surface 103 can cooperate with the side walls of the installation groove 21 for limiting, so that the degrees of freedom in all directions of the battery are restricted. When disassembling, just disassemble the engaging member 200 from the battery compartment 20, and then the engaging member 200 and the battery 100 can be taken out from the battery compartment 20.

[0059] In summary, for the battery assembly 10 provided by the present application, the battery 100 can be detachably installed in the battery compartment 20, so that the disassembly and assembly of the battery 100 can be conveniently realized, thereby facilitating the maintenance of the battery 100, reducing the maintenance cost, and being beneficial to extending the service life of the electrical device provided with the battery assembly 10.

[0060] In addition, by the cooperation of the limiting surface 103 and the engaging member 200, while realizing the first-direction limiting, the second-direction limiting can be realized without occupying the second-direction space, reducing the space occupation of the limiting structure, and being beneficial to the miniaturization design of the battery assembly 10 and the increase of the capacity of the battery 100.

[0061] In some embodiments, please refer to Figure 5, the battery cell 110 of the battery 100 includes a cell body 111, a top seal part 112, a side seal part 113, and a bending part 114. The top seal part 112 is disposed on the top end surface 1111 of the cell body 111, the side seal part 113 is disposed on the side end surface 1112 of the cell body 111, the bending part 114 is connected to the top end of the side seal part 113, and the bending part 114 is attached to the top end surface 1111 of the cell body 111. The part of the top seal part 112 opposite to the bending part 114 is attached to the outer surface of the bending part 114. The top seal part 112, the side seal part 113, and the bending part 114 play a role in protecting the cell body 111. In some specific examples, the top seal part 112, the side seal part 113, and the bending part 114 can be made of aluminum-plastic film material. Among them, the aluminum-plastic film has high barrier properties, good cold stamping formability, puncture resistance, and electrolyte resistance stability, etc. When the top seal part 112 is made of aluminum-plastic film material, the bendability of the aluminum-plastic film can be utilized to bend the top seal part 112 towards the cell body 111, so that the top seal part 112 is approximately parallel or substantially parallel to the top end surface 1111 of the cell body 111 (i.e., the end surface of the cell body 111 along the negative x-axis direction). The top seal part 112 can be specifically fixed to the top end surface 1111 of the cell body 111 through insulating adhesive tape.

[0062] On the two opposite side end surfaces 1112 of the battery cell 110 along the width direction, i.e., the Y direction, side seal parts 113 can be respectively provided. One of the two side seal parts 113 is located on one side of the top seal part 112, and the other is located on the other side of the top seal part 112. When the side seal part 113 is made of aluminum-plastic film material, the bendable characteristic of the aluminum-plastic film can be utilized to fold the side seal part 113 towards the battery cell 110, so that the side seal part 113 is attached to the side end surface 1112 of the cell body 111. Of course, the side seal part 113 and the side end surface 1112 of the cell body 111 can also be fixedly pasted through an adhesive layer.

[0063] The bending part 114 is connected to the top end of the side seal part 113, that is, the part of the side seal part 113 protruding from the top end surface 1111 of the battery cell 110 is folded towards the top end surface 1111 of the battery cell 110 to form the bending part 114. The bending part 114 is attached to the top end surface 1111 of the battery cell 110, and can be specifically fixedly bonded through an adhesive layer. Since the thickness of the bending part 114 is usually less than its length, when the bending part 114 is attached to the top end surface 1111 of the battery cell 110, with the overall occupied space of the battery 100 being the same, a battery cell 110 with a larger size can be set, thereby increasing the capacity of the battery 100. In addition, the part of the top seal part 112 opposite to the bending part 114 is attached to the outer surface of the bending part 114, so that the top seal part 112 can play a limiting role on the bending part 114, preventing the bending part 114 from rebounding away from the top end surface 1111 of the cell body 111, and making the overall structure more stable.

[0064] Please refer to Figure 1 and Figure 7 In some embodiments, the limiting surface 103 is an inclined surface that is inclined relative to the first surface 101. The inclined surface is a plane that is inclined relative to the first surface 101, and its rate of change of distance relative to the reference plane is the same. The use of an inclined surface for the limiting surface 103 results in a simple structure and convenient processing. The specific inclination angle is not limited here, and the inclination direction can also be set as needed. For example, when the distance from one end of the limiting surface 103 close to the first surface 101 to the other end to the reference plane gradually increases, it is inclined from the inside to the outside accordingly; when the distance from one end of the limiting surface 103 close to the first surface 101 to the other end to the reference plane gradually decreases, it is inclined from the outside to the inside accordingly.

[0065] In other embodiments, the limiting surface 103 is an arc surface. It can be understood that the arc surface here includes both circular arc surfaces and elliptical arc surfaces or other arc surfaces, and the concave-convex direction of the arc surface is not specifically limited, and it can be either an arc surface that protrudes outward or an arc surface that protrudes inward. When the limiting surface 103 is an arc surface, its rate of change of distance relative to the reference plane is variable. And when the limiting surface 103 is an arc surface, when the fitting height of the engaging member 200 and the battery 100 in the Z direction is the same, the contact area between the two is larger, so that a more stable and reliable limiting effect can be provided.

[0066] Please continue to refer to Figure 1 and Figure 7 In some embodiments, the two side walls of the battery 100 provided in the present application that are opposite to each other in the first direction are respectively the limiting surfaces 103, and engaging members 200 are respectively provided corresponding to the two limiting surfaces 103. The first direction is the above-mentioned Y direction. In the present application, being opposite to each other in the first direction means that their relative positions are distributed in the first direction, rather than both extending in the first direction. By using both side walls 102 that are relatively distributed in the Y direction as the limiting surfaces 103 and correspondingly providing the engaging members 200 corresponding to each limiting surface 103, the limiting effects in the Y direction and the Z direction can be provided respectively from the opposite sides of the battery 100, making the overall force of the battery 100 more stable and the fixed installation more reliable. At the same time, Z-direction component forces are formed on both sides of the battery 100, and the two jointly form a squeezing force on the battery 100 in the Z direction, which is greater than the squeezing force formed by a single limiting surface 103, and the battery 100 is fixed more reliably.

[0067] The distances from the two limiting surfaces 103 to the reference surface may be the same or different from the first end to the second end. In one way, the distances from the two limiting surfaces 103 to the reference surface gradually increase from the first end to the second end; in another way, the distances from the two limiting surfaces 103 to the reference surface gradually decrease from the first end to the second end; in still another way, the distances from the two limiting surfaces 103 to the reference surface increase gradually for one and decrease gradually for the other from the first end to the second end. In the first two ways, the assembly is more convenient. For example, the battery 100 can be first installed in the installation groove 21, and then the engaging members 200 on both sides can be placed in the installation groove 21 and connected to the battery compartment 20. Or, the engaging members 200 on both sides can be first placed in the installation groove 21, then the battery 100 can be installed in the installation groove 21, and the engaging members 200 on both sides can be respectively connected to the battery compartment 20. Specifically, the two limiting surfaces 103 can be symmetrically arranged, so that the force on the battery 100 is more uniform.

[0068] In some embodiments, please refer to Figures 2 - 4 , the two opposite side walls of the battery 100 along the second direction are respectively used to contact the two side walls of the installation groove 21, and the second direction is different from the first direction. In the present application, "opposite along the second direction" means that their relative positions are distributed along the second direction, rather than both extending along the second direction. Specifically, the second direction can be perpendicular to the first direction, that is, the second direction is the above-mentioned X direction. Through the cooperation of the limiting surface 103 and the engaging member 200, the degrees of freedom of the battery 100 in the Z direction and the Y direction are restricted, and when installing, the degrees of freedom of the battery 100 in the X direction are restricted through the cooperation of the two side walls of the installation groove 21, so that the battery 100 is reliably fixed in the installation groove 21, and the structure is simple, and the disassembly and assembly operation steps of the battery 100 are fewer. The side walls of the installation groove 21 can either utilize the outer side walls of the battery compartment 20 itself, or a protruding enclosure 22 can be provided in the battery compartment 20 as the side wall. That is, the installation groove 21 can either be surrounded by the side walls of the battery compartment 20 itself, or be surrounded by setting an enclosure 22 in the battery compartment 20 and cooperating with the battery compartment 20 itself. Figures 2 - 4 In, the two opposite side walls of the battery compartment 20 itself, the end face of the battery compartment 20, and the enclosure 22 provided on the end face together surround the installation groove 21.

[0069] Please refer to Figure 2 , in some embodiments, the battery compartment 20 provided in the present application includes a bottom case 23 and a cover body 24, the bottom case 23 and the cover body 24 are detachably connected, the installation groove 21 is provided in the bottom case 23, and after the battery 100 is fixed in the installation groove 21, the cover body 24 can be connected to the bottom case 23 to close the installation groove 21, so as to play a role in protecting the battery 100. According to needs, the battery compartment 20 can also only include the bottom case 23 and can cooperate with components such as the casing of the electrical device.

[0070] In some embodiments, the engaging member 200 is connected to the battery compartment 20 by screws, snap connection or pin connection. The specific connection manner between the engaging member 200 and the battery compartment 20 can be selected according to needs, and the connection position can be set accordingly according to the internal layout of the battery compartment 20, etc., and no specific limitation is made here.

[0071] Please refer to Figure 6 , in some embodiments, the battery 100 provided in the present application includes a battery cell 110 and a support frame 130. The battery cell 110 can be an aluminum shell battery cell, a soft package battery cell, etc. The head end surface of the battery cell 110 is provided with electrode tabs 120, and the first surface 101 is the surface of the battery cell 110. Specifically, the battery cell 110 may include a battery cell body 111 and electrode tabs 120 extending from one end of the battery cell body 111, and the end surface where the electrode tabs 120 extend is denoted as the head end surface, and the electrode tabs 120 are electrically connected to the battery cell body 111. Among them, the positive electrode tab and the negative electrode tab are respectively arranged to be electrically connected to the battery cell body 111. For example, the electrode tabs 120 may have two, one of which is a positive electrode tab and the other is a negative electrode tab. Or, the electrode tabs 120 may also have more than two. For example, three electrode tabs 120 are connected to one end of the battery cell body 111, one of which is a positive electrode tab, and the other two are negative electrode tabs connected in parallel. Since the side wall 102 of the battery 100 in the present application is used as the limiting surface 103 and is subjected to a large force, the support frame 130 is provided on both sides and the head end of the battery cell 110, and the outer side wall of the support frame 130 is used as the limiting surface 103. Specifically, at least one of the outer side walls of the support frame 130 located on the opposite sides of the head end surface is used as the limiting surface 103. It can be understood that the support frame 130 is made of a material with hardness and structural strength meeting the requirements. On the one hand, the support frame 130 can cover the head end and both sides of the battery cell 110 to play a protective role for the battery cell 110. On the other hand, the limiting surface 103 is arranged on the support frame 130. Since the support frame 130 has good structural strength, the accuracy of the limiting surface 103 can be ensured, that is, the limiting surface 103 is not easily deformed, and further the limiting effect of the cooperation between the limiting surface 103 and the engaging member 200 is ensured, so that the installation of the battery 100 is more stable and reliable. When the structural strength of the side sealing portion 113 meets the requirements, the outer side wall of the side sealing portion 113 can also be used as the limiting surface 103, and there is no need to provide a support frame on both sides of the battery cell 110.

[0072] In some embodiments, the support frame 130 is a plastic frame. The plastic frame is light in weight, good in chemical stability, excellent in electrical insulation performance, good in thermal insulation performance, and high in mechanical strength. Specifically, the plastic frame can be injection-molded on the head end and both sides of the battery cell 110. As Figure 6As shown, by injecting plastic on opposite sides of the battery cell 110 and injecting plastic at the head of the battery cell 110, a plastic frame is formed to wrap the battery cell 110 by injection. If necessary, injection can also be performed at the bottom end of the battery cell 110. The plastic frame and the battery cell 110 are bonded by injection to form an integral structure. The limiting surface 103 can be specifically formed by side injection, such as Figure 7 as shown, an inclined surface is formed by side injection, and the two inclined surfaces can be used as the above-mentioned limiting surface 103.

[0073] Please refer to Figure 3 , in some embodiments, along the extending direction of the engaging member 200, the top end of the engaging member 200 protrudes from the top end of the support frame 130. During installation, the top side wall 212 of the installation groove 21 abuts against the connector 142, the top end of the engaging member 200 abuts against the top side wall 212, and there is a gap between the end of the support frame 130 facing the top side wall 212 and the top side wall 212. It can be understood that the side wall of the installation groove 21 facing the connector 142 is denoted as the top side wall 212, and the top side wall 212 abuts against the connector 142 to play a role in limiting the battery 100. The top end of the engaging member 200 protrudes from the top end of the support frame 130. It can be understood that the top end of the engaging member 200 and the top end of the support frame 130 are in the same orientation as the top side wall 212. That is, the top end of the engaging member 200 is not flush with the support frame 130, but protrudes from the support frame 130. The engaging member 200 abuts against the top side wall 212, and there is a gap between the top surface of the support frame 130 and the top side wall 212, that is, a certain cavity is formed among the engaging member 200, the top side wall 212, and the support frame 130. With the above settings, the space utilization rate is high, and the thickness of the support frame 130 at the top is small. On the one hand, materials are saved and the cost is reduced. On the other hand, the small thickness is also beneficial to the heat dissipation at the protection board 140, thereby reducing the temperature rise of the protection board 140.

[0074] Please refer to Figure 8 and Figure 9 , Figure 8 is a schematic structural diagram of the battery 100 with the support frame 130 not shown, Figure 9 is Figure 8 an exploded schematic diagram. In some embodiments, the battery 100 provided in the present application includes a protection board 140. The protection board 140 is provided with a battery cell connection portion 141 and a connector 142. The battery cell connection portion 141 is connected to the tab 120, and the connector 142 is used to connect to an external electronic device, thereby connecting the battery cell 110 to the external electronic device. The protection board 140 is used to transfer the battery cell 110 and the external electronic device, and can play a role in protecting the battery cell 110. For example, when an external power source charges the battery 100 and the battery 100 reaches a saturated state inside, the internal circuit of the protection board 140 will automatically cut off, so as to avoid overcharging.

[0075] Specifically, the protection board 140 can be a printed circuit board. For example, the protection board 140 may include a substrate and electronic components disposed on the substrate. The electronic components are electrically connected through the printed circuit on the substrate. Among them, the electronic components include but are not limited to capacitors, resistors, MOSFET switches, integrated circuits, etc.

[0076] The tab 120 is connected to the battery cell connection portion 141 on the protection board 140. In some specific examples, the battery cell connection portion 141 can be a nickel sheet. The tab 120 and the nickel sheet can be welded and fixed by means such as laser welding, resistance welding, ultrasonic welding, etc. It can be understood that at the welding joint of the tab 120 and the protection board 140, an insulating protective layer can be provided to insulate the welding joint to avoid short - circuit situations.

[0077] The connector 142 is an electrical connector for electrically connecting the protection board 140 and an external electronic device. Exemplarily, the connector 142 can be a flexible circuit board. One end of the flexible circuit board is electrically connected to the protection board 140, and the other end of the flexible circuit board is denoted as the external connection end 1421 for electrically connecting to the external electronic device.

[0078] The support frame 130 covers the outside of the protection board 140, and the external connection end 1421 of the connector 142 is located outside the support frame 130. Since the support frame 130 covers the outside of the protection board 140, the support frame 130 can play a protective role for the protection board 140 at the same time. The external connection end 1421 of the connector 142, that is, the end for connecting to the external electronic device, extends outside the support frame 130, so that the external connection end 1421 can be exposed without affecting the normal electrical connection between the connector 142 and the external electronic device.

[0079] Please refer to Figures 8 - 12 , in some embodiments, the protection board 140 provided in the present application is disposed parallel to the head end face of the battery cell 110, and the surface of the protection board 140 with the battery cell connection portion 141 faces the head end face or faces away from the head end face of the battery cell 110. Different from the conventional vertical placement of the protection board 140, in this embodiment, the protection board 140 is placed flat on the head end of the battery cell 110. Since the thickness of the protection board 140 is usually significantly smaller than its width, after the protection board 140 is placed flat, the space occupation can be reduced. In the case of the same external dimensions of the battery 100, the battery cell 110 can have a larger size, and thus the capacity of the battery 100 can be increased, effectively improving the endurance of the power - consuming device. Specifically, the protection board 140 and the battery cell 110 can be fixed by a double - sided adhesive 160.

[0080] Please refer to Figures 11 - 12, in some embodiments, the tab 120 of the battery cell 110 is electrically connected to the battery cell connection part 141 of the protection board 140. Specifically, the tab 120 can be bent first, and after the battery cell connection part 141 is also bent, the protection board 140 is placed flat on the head of the battery cell 110, and the bent battery cell connection part 141 is welded to the tab 120. Since the battery cell connection part 141 and / or the tab 120 will occupy a certain space in the width direction of the protection board 140, that is, the Z direction, after being bent, in order to prevent the tab 120 from protruding from the second surface 104, please refer to Figure 8 , in some embodiments, the rear end 143 of the protection board 140 is flush with the first surface 101, and at least a part of the rear end 143 of the protection board 140 is flush with the rear end face of the support frame 130, and the front end of the protection board 140 is located behind the second surface 104. That is, the protection board 140 is flush with the first surface 101 of the battery cell 110, that is, the protection board 140 is arranged at the rear. Compared with the case where the protection board 140 is arranged in the middle of the battery cell 110, arranging it on one side can provide a larger bending space for the bending of the tab 120, so as to effectively prevent the tab 120 from protruding from the second surface 104.

[0081] In other embodiments, please refer to Figures 11 - 12 , there are gaps between the rear end 143 of the protection board 140 and the first surface 101 and between the front end 144 of the protection board 140 and the second surface 104 of the battery cell 110 respectively, and the second surface 104 is opposite to the first surface 101. The difference between this embodiment and the above embodiment is that the protection board 140 is not arranged at the rear, but the protection board 140 is arranged in the middle of the battery cell 110, which is convenient to set the support frames 130 on both sides thereof, such as injecting glue on both sides to form plastic parts. Specifically, for the case where the Z - direction thickness of the battery cell 110 itself is relatively large, it is preferred to arrange the protection board 140 in the middle of the battery cell 110; for the case where the Z - direction thickness of the battery cell 110 itself is relatively small, it is preferred to arrange the protection board 140 at the rear.

[0082] Please refer to Figure 8 , Figure 12 and Figure 13 , a notch 145 is provided at the rear end 143 of the protection board 140 provided in the present application, and a protruding part 131 having the same shape as the notch 145 is provided on the support frame 130, and the protruding part 131 is arranged in the notch 145. By providing the notch 145 at the rear end 143 of the protection board 140, when injecting plastic on the back surface of the battery cell 110, that is, aligning the second surface 104, the glue will not flow unevenly, and the glue can fill the notch 145, so as to have a better injection effect and improve the bonding strength and reliability between the protection board 140 and the plastic frame. It can be understood that the setting of the notch 145 should not affect the normal function of the cooperation between the protection board 140 and the battery cell 110.

[0083] In some embodiments, the thickness of the bent portion 114 is not greater than the height of the protection plate 140. Since the thickness of the bent portion 114 occupies X-direction space, changing the protection plate 140 from a vertical placement to a horizontal placement will save X-direction space. Therefore, the thickness of the bent portion 114 not being greater than the height of the protection plate 140 will not overly occupy the X-direction space saved after the protection plate 140 is placed horizontally, and the overall purpose of reducing the occupation of X-direction space can still be achieved.

[0084] Please refer to Figure 14 , in some embodiments, the battery 100 provided in the present application further includes a label 150 disposed outside the battery cell 110 and the support frame 130, and the label 150 is connected to both the support frame 130 and the battery cell 110. By wrapping the label 150 outside the battery cell 110 and the support frame 130, the connection between the battery cell 110 and the support frame 130 can be effectively strengthened, making their connection more tight and reliable. The label 150 can specifically adopt materials such as polyethylene terephthalate film, polyvinyl chloride film, and aluminized film, and no specific limitation is made here.

[0085] The present application also provides an electrical device, which includes any one of the battery assemblies, battery installation structures, or batteries in the above embodiments. Since this electrical device adopts the battery assembly, battery installation structure, or battery in the above embodiments, the beneficial effects of this electrical device can be referred to the above embodiments.

[0086] It can be understood that the design of this electrical device can be for energy storage applications or power output, or it can be compatible with both application modes, which should also belong to the scope of description of the present application. Specifically, it includes but is not limited to mobile phones, tablet computers, laptop computers, etc.

[0087] In this specification, each embodiment is described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. The same or similar parts among the embodiments can be referred to each other.

[0088] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A battery component, characterized in that, Comprising: A battery (100), the battery (100) having a first surface (101) and side walls (102) provided around the first surface (101), at least one side wall (102) of the battery (100) being a limiting surface (103), the distance from one end of the limiting surface (103) close to the first surface (101) to the opposite end to a reference plane gradually increasing or gradually decreasing, the reference plane being perpendicular to the first surface (101), the battery cell (110) of the battery (100) including a battery cell body (111), a top sealing portion (112), a side sealing portion (113) and a bending portion (114), the top sealing portion (112) being provided on the top end surface (1111) of the battery cell body (111), the side sealing portion (113) being provided on the side end surface (1112) of the battery cell body (111), the bending portion (114) being connected to the top of the side sealing portion (113), and the bending portion (114) being attached to the top end surface (1111), the portion of the top sealing portion (112) opposite to the bending portion (114) being attached to the outer surface of the bending portion (114); A engaging member (200), correspondingly arranged with the limiting surface (103), the engaging member (200) having a surface contact with the limiting surface (103).

2. The battery assembly according to claim 1, wherein, The limiting surface (103) is an inclined surface inclined relative to the first surface (101); Or, the limiting surface (103) is an arc surface.

3. The battery assembly according to claim 1, characterized in that, On two opposite side walls of the battery (100) along a first direction are respectively the limiting surfaces (103), and engaging members (200) are respectively provided corresponding to the two limiting surfaces (103); The distances from one end of the two limiting surfaces (103) close to the first surface (101) to the opposite end to the reference plane both gradually increase, or both gradually decrease, or one gradually increases while the other gradually decreases.

4. The battery assembly according to claim 1, characterized in that, A tab (220) is provided on the head end surface of the battery cell (110), the battery (100) includes a support frame (130), the support frame (130) being provided at the head end and two sides of the battery cell (110), the limiting surface (103) including the outer side wall of the support frame (130) at at least one side of the two opposite sides of the battery cell (110).

5. The battery assembly according to claim 4, wherein, Along the extending direction of the engaging member (200), the top end of the engaging member (200) protrudes from the top end of the support frame (130).

6. The battery assembly according to claim 4, wherein, The battery (100) further includes a protection board (140), the protection board (140) being provided with a battery cell connection portion (141) and a connector (142), the battery cell connection portion (141) being connected to the tab (220); The support frame (130) covers the outside of the protection board (140), and the external connection end (1421) of the connector (142) is located outside the support frame (130).

7. The battery assembly according to claim 6, wherein The protection board (140) is arranged parallel to the head end surface of the battery cell (110), and the surface of the protection board (140) provided with the battery cell connection portion (141) faces the head end surface or faces away from the head end surface.

8. The battery assembly according to claim 7, wherein The rear end (143) of the protection plate (140) is flush with the first surface (101), and at least part of the rear end (143) of the protection plate (140) is flush with the rear end surface of the support frame (130); Or, There are gaps respectively between the rear end (143) of the protection plate (140) and the first surface (101) and between the front end (144) of the protection plate (140) and the second surface (104) of the battery cell (110), and the second surface (104) is opposite to the first surface (101).

9. The battery assembly according to claim 8, characterized in that A notch (145) is provided at the rear end (143) of the protection plate (140), and a protrusion (131) with a shape consistent with that of the notch (145) is provided on the support frame (130), and the protrusion (131) is arranged in the notch (145).

10. The battery assembly according to claim 6, wherein, The thickness of the bending part (114) is not greater than the height of the protection plate (140).

11. The battery assembly according to claim 4, wherein, The battery (100) further includes a label (150) disposed outside the battery cell (110) and the support frame (130), and the label (150) is connected to both the support frame (130) and the battery cell (110).

12. An electrical device, characterized in that, Comprising the battery assembly (10) according to any one of claims 1-11.

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