Battery device and electric device

Abstract

The utility model discloses a battery device and a power utilization device, and the battery device comprises an isolation plate, a circuit board, a conductive sheet, a temperature collector, a first reinforcing plate and a heat conduction pad. The circuit board is arranged on one side, deviating from the battery monomers, of the isolation plate; the temperature collector is arranged on the side, away from the isolation plate, of the circuit board. The first reinforcing plate and the temperature collector are correspondingly positioned on two opposite sides of the circuit board, and the heat conducting pad is arranged between the first reinforcing plate and the battery monomer; the conducting strip is arranged on one side, deviating from the battery monomers, of the isolation plate, the conducting strip is provided with an extension part, the extension part is located between the circuit board and the isolation plate, and the extension part crimps the first reinforcing plate along the first direction; and the conducting strips are electrically connected with the circuit board and the battery monomers respectively. According to the scheme provided by the invention, the heat-conducting pad can be laminated without an additional bracket, the mounting procedures are few, and the cost of the battery management system and the process cost are effectively reduced.

Description

Technical Field

[0001] The present application relates to the technical field of batteries, and particularly to a battery device and an electrical device. Background Art

[0002] As an important component in a lithium battery, an integrated busbar mainly includes an isolation plate, a busbar, a flexible circuit board, and a temperature sensor (Negative Temperature Coefficient, NTC).

[0003] In the related art, an additional bracket is required for the assembly of the NTC, and there are many installation procedures. Summary of the Utility Model

[0004] In view of the above problems, the present application provides a battery device and an electrical device, which can solve the problems that an additional bracket is required for the assembly of the NTC and there are many installation procedures.

[0005] To solve the above technical problems, in a first aspect, the present application provides a battery device, including: an isolation plate, a circuit board, a conductive sheet, a temperature collector, a first reinforcing plate, and a heat conducting pad;

[0006] The circuit board is disposed on a side of the isolation plate away from the battery cell; the temperature collector is disposed on a side of the circuit board away from the isolation plate;

[0007] The first reinforcing plate and the temperature collector are correspondingly located on opposite sides of the circuit board, and the heat conducting pad is disposed between the first reinforcing plate and the battery cell;

[0008] The conductive sheet is disposed on a side of the isolation plate away from the battery cell, and the conductive sheet has an extension portion. The extension portion is located between the circuit board and the isolation plate, and the extension portion presses the first reinforcing plate along a first direction; the conductive sheet is electrically connected to the circuit board and the battery cell respectively, wherein the first direction is the thickness direction of the first reinforcing plate.

[0009] In the technical solution of the embodiment of the present application, by pressing the first reinforcing plate downward in the first direction through the extension portion, pressure can be applied to the heat conducting pad on the first reinforcing plate, so that the heat conducting pad can abut against the battery cell. At this time, the temperature generated on the battery cell can be well conducted to the temperature collector through the heat conducting pad, so that the temperature collector can accurately collect the temperature on the battery cell. The overall device can press the heat conducting pad without an additional bracket, with fewer installation procedures, effectively reducing the cost of the battery management system and the process cost.

[0010] In some embodiments, a protruding portion is provided around the first reinforcing plate, a crimping edge is provided on the extending portion, and the crimping edge crimps the protruding portion along the first direction. In this way, it is convenient for the extending portion to crimp the first reinforcing plate.

[0011] In some embodiments, reinforcing ribs are provided on the crimping edge. In this way, the strength of the crimping edge can be improved, and further the pressure exerted by the crimping edge on the protruding portion can be increased.

[0012] In some embodiments, a groove is provided on the first reinforcing plate, and at least a part of the heat-conducting pad is located in the groove and abuts against the circuit board. In this way, it is convenient to fix the heat-conducting pad on the first reinforcing plate.

[0013] In some embodiments, the circuit board has a sunken portion, a notch is provided on the circuit board, and the sunken portion is located in the area surrounded by the notch;

[0014] The temperature collector and the first reinforcing plate are correspondingly located on opposite sides of the sunken portion;

[0015] At least a part of the heat-conducting pad is located in the groove and abuts against the sunken portion. In this way, it is possible to prevent the temperature collector from protruding from the circuit board.

[0016] In some embodiments, the distance from the inner wall of the notch to the sunken portion along the first direction is greater than or equal to the distance from the side of the temperature collector facing away from the sunken portion to the sunken portion. In this way, it can be ensured that the temperature collector is not higher than the circuit board, and the temperature collector can be prevented from being collided.

[0017] In some embodiments, the battery device further includes a second reinforcing plate, the second reinforcing plate is disposed on the side of the sunken portion facing away from the first reinforcing plate, and the temperature collector is fixed to the second reinforcing plate. In this way, it is convenient to fix the temperature collector on the sunken portion.

[0018] In some embodiments, a card slot is provided on the second reinforcing plate, the temperature collector is disposed in the card slot, and the temperature collector abuts against the sunken portion. In this way, it is convenient to fix the temperature collector on the second reinforcing plate.

[0019] In some embodiments, a first positioning hole is provided on the first reinforcing plate, a second positioning hole is provided on the second reinforcing plate, and a third positioning hole is provided on the sunken portion;

[0020] Positioning posts are provided on the isolation plate, and the positioning posts sequentially pass through the first positioning hole, the third positioning hole, and the second positioning hole along the first direction. In this way, it is convenient to fix the first reinforcing plate and the second reinforcing plate.

[0021] In a second aspect, the present application provides an electrical device, including the battery device as described in any one of the embodiments of the present application.

[0022] The above description is only an overview of the technical solution of the present application. In order to understand the technical means of the present application more clearly, it can be implemented according to the content of the specification. And in order to make the above and other purposes, features and advantages of the present application more obvious and understandable, the specific embodiments of the present application are specifically given below. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] By reading the following detailed description of the embodiments, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the embodiments and are not considered to be a limitation of the present application. And in all the drawings, the same reference numerals are used to represent the same components. In the drawings:

[0024] Figure 1 is a schematic structural diagram of an electrical device provided by some embodiments of the present application;

[0025] Figure 2 is a schematic structural diagram of a battery provided by some embodiments of the present application;

[0026] Figure 3 is a schematic structural diagram of a battery cell provided by some embodiments of the present application;

[0027] Figure 4 is a schematic structural diagram of a battery device provided by some embodiments of the present application;

[0028] Figure 5 is Figure 4 an enlarged schematic view of part A in;

[0029] Figure 6 is a schematic connection diagram of a first reinforcing plate and a heat conducting pad provided by some embodiments of the present application;

[0030] Figure 7 is Figure 5 an enlarged schematic view of part B in;

[0031] Figure 8 is a schematic connection diagram of a circuit board and a temperature collector provided by some embodiments of the present application;

[0032] Figure 9 is Figure 8 a schematic view from another perspective.

[0033] The reference numerals in the specific embodiments are as follows:

[0034] 1000, vehicle;

[0035] 100, battery; 200, controller; 300, motor;

[0036] 110. Housing; 111. First part; 112. Second part; 120. Battery cell; 121. Housing; 122. End cap; 123. Electrode assembly;

[0037] 11. Separator; 12. Circuit board; 124. Notch; 125. Sinking part; 13. Conductive sheet; 131. Extension part; 132. Crimping edge; 14. Temperature collector; 15. First reinforcing plate; 151. Protrusion; 152. Groove; 153. First positioning hole; 16. Second reinforcing plate; 161. Card slot; 162. Second positioning hole; 17. Thermal pad. Detailed implementation manners

[0038] The embodiments of the technical solutions of the present application will be described in detail below with reference to the accompanying drawings. The following embodiments are only used to illustrate the technical solutions of the present application more clearly, so they are only examples and cannot be used to limit the protection scope of the present application.

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments 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 drawings are intended to cover non-exclusive inclusion.

[0040] In the description of the embodiments of this application, technical terms such as "first" and "second" are only used to distinguish different objects and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity, specific order or primary-secondary relationship of the indicated technical features. In the description of the embodiments of this application, "a plurality of" means more than two unless otherwise specifically defined.

[0041] Referring to "embodiments" herein means that the specific features, structures or characteristics described in connection with the embodiments may be included in at least one embodiment of this application. The phrase appears in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0042] In the description of the embodiments of this application, the term "and / or" is only a description of the association relationship of associated objects, indicating that there can be three relationships. 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 article generally represents an "or" relationship between the associated objects before and after.

[0043] In the description of the embodiments of the present application, the term "plural" means two or more (including two). Similarly, "multiple groups" means two or more groups (including two groups), and "multiple pieces" means two or more pieces (including two pieces).

[0044] In the description of the embodiments of the present application, the orientation or positional relationship indicated by technical terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the embodiments of the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the embodiments of the present application.

[0045] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can also be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific situations.

[0046] Currently, from the perspective of the development of the market situation, the application of power batteries is becoming more and more extensive. Power batteries are 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 transportation such as electric bicycles, electric motorcycles, and electric vehicles, as well as in multiple fields such as military equipment and aerospace. With the continuous expansion of the application fields of power batteries, the market demand is also continuously increasing.

[0047] The CCS (Cells Contact System, integrated busbar) in a power battery is a wire harness board integrated product, which is usually composed of an FPC (Flexible Printed Circuit, flexible circuit board), a plastic structural part, a copper-aluminum busbar, a temperature sensor, etc.

[0048] In the related art, when assembling an NTC on a CCS, it is necessary to press down the reinforcing plate through an additional bracket to compress the heat-conducting pad on the reinforcing plate to ensure that the heat-conducting pad abuts against the battery cell. At this time, the heat-conducting pad transfers the heat generated by the battery cell to the NTC to be converted into temperature for monitoring the temperature of the battery cell. In this way, it inevitably leads to a large number of installation procedures.

[0049] Based on the above considerations, in order to solve the problem that an additional bracket is required and there are many installation processes when assembling NTC, a battery device is designed, which includes an isolation plate, a circuit board, a conductive sheet, a temperature collector, a first reinforcement plate and a thermal pad, wherein the circuit board is arranged on the side of the isolation plate away from the battery cell; the temperature collector is arranged on the side of the circuit board away from the isolation plate; the first reinforcement plate and the temperature collector are correspondingly located on opposite sides of the circuit board, and the thermal pad is arranged between the first reinforcement plate and the battery cell; the conductive sheet is arranged on the side of the isolation plate away from the battery cell, and an extension portion is provided on the conductive sheet, the extension portion is located between the circuit board and the isolation plate, and the extension portion is pressed against the first reinforcement plate along a first direction; the conductive sheet is electrically connected to the circuit board and the battery cell respectively, wherein the first direction is the thickness direction of the first reinforcement plate.

[0050] In the technical solution of the embodiment of the present application, the first reinforcing plate is pressed downwardly in the first direction by the extension part, so that pressure can be applied to the thermal pad on the first reinforcing plate, so that the thermal pad can abut against the battery cell. At this time, the temperature generated on the battery cell can be well conducted to the temperature collector through the thermal pad, so that the temperature collector can accurately collect the temperature on the battery cell. The overall device does not require an additional bracket to press the thermal pad, and the installation process is reduced, which effectively reduces the cost and process cost of the battery management system.

[0051] The battery in this application refers to a single physical module that includes one or more battery cells to provide higher voltage and capacity. For example, the battery mentioned in this application may include a battery pack, etc. The battery can be used as a power source or power system for an electrical device, which is conducive to improving the overall performance of the battery and facilitating the promotion of the battery.

[0052] The above-mentioned electrical devices may be, but are not limited to, mobile phones, tablets, laptop computers, electric toys, electric tools, battery cars, electric cars, ships, spacecraft, etc. Among them, electric toys may include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc., and spacecraft may include airplanes, rockets, space shuttles, and spacecraft, etc.

[0053] For the convenience of description, the following embodiments are described by taking a vehicle 1000 as an example of an electrical device according to an embodiment of the present application.

[0054] Please refer to Figure 1 , Figure 1Schematic diagram of the structure of vehicle 1000 provided by some embodiments of the present application. Vehicle 1000 can be a fuel vehicle, a gas vehicle, or a new energy vehicle. The new energy vehicle can be a pure electric vehicle, a hybrid vehicle, an extended-range vehicle, etc. A battery 100 is disposed inside vehicle 1000, and the battery 100 can be disposed at the bottom, the head, or the tail of vehicle 1000. The battery 100 can be used to supply power to vehicle 1000. For example, the battery 100 can serve as the operating power source of vehicle 1000. Vehicle 1000 may further include a controller 200 and a motor 300. The controller 200 is used to control the battery 100 to supply power to the motor 300. For example, it is used for the working power requirements during the start-up, navigation, and driving of vehicle 1000.

[0055] In some embodiments of the present application, the battery 100 can not only serve as the operating power source of vehicle 1000, but also serve as the driving power source of vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for vehicle 1000.

[0056] Please refer to Figure 2 , Figure 2 Explosion diagram of the battery 100 provided by some embodiments of the present application. The battery 100 includes a box body 110 and battery cells 120, and the battery cells 120 are accommodated in the box body 110. Among them, the box body 110 is used to provide an accommodation space for the battery cells 120, and the box body 110 can adopt various structures. In some embodiments, the box body 110 may include a first part 111 and a second part 112. The first part 111 and the second part 112 are covered with each other, and the first part 111 and the second part 112 jointly define an accommodation space for accommodating the battery cells 120. The second part 112 can be a hollow structure with one end open, and the first part 111 can be a plate-like structure. The first part 111 covers the open side of the second part 112 so that the first part 111 and the second part 112 jointly define an accommodation space; the first part 111 and the second part 112 can also both be hollow structures with one side open, and the open side of the first part 111 covers the open side of the second part 112. Of course, the box body 110 formed by the first part 111 and the second part 112 can be of various shapes, such as a cylinder, a cuboid, etc.

[0057] In the battery 100, there may be multiple battery cells 120. The multiple battery cells 120 can be connected in series, parallel, or in a combined series-parallel configuration. A combined series-parallel configuration means that there are both series and parallel connections among the multiple battery cells 120. The multiple battery cells 120 can be directly connected in series, parallel, or in a combined series-parallel manner and then the whole formed by the multiple battery cells 120 is accommodated in the box 110. Of course, the battery 100 can also be such that multiple battery cells 120 are first connected in series, parallel, or in a combined series-parallel manner to form a battery module, and then multiple battery modules are connected in series, parallel, or in a combined series-parallel manner to form a whole and are accommodated in the box 110. The battery 100 can also include other structures. For example, the battery 100 can also include a busbar component for realizing the electrical connection among the multiple battery cells 120.

[0058] Among them, each battery cell 120 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. The battery cell 120 can be in a cylindrical shape, a flat shape, a cuboid shape, or other shapes, etc.

[0059] As Figure 3 shown, the battery cell 120 can include a housing, an electrode assembly 123, and electrode terminals. The housing includes a case 121 and an end cap 122. The case 121 has an opening, and the end cap 122 closes the opening to isolate the internal environment of the battery cell 120 from the external environment.

[0060] The case 121 is a component for cooperating with the end cap 122 to form the internal environment of the battery cell 120. Among them, the formed internal environment can be used to accommodate the electrode assembly 123, the electrolyte, and other components. The case 121 and the end cap 122 can be independent components. The case 121 can be in various shapes and various sizes. Specifically, the shape of the case 121 can be determined according to the specific shape and size of the electrode assembly 123. The material of the case 121 can be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc.

[0061] The end cap 122 refers to a component that covers the opening of the housing 121 to isolate the internal environment of the battery cell 120 from the external environment. Without limitation, the shape of the end cap 122 can be adapted to the shape of the housing 121 to fit the housing 121. Optionally, the end cap 122 can be made of a material with a certain hardness and strength (such as aluminum alloy). In this way, the end cap 122 is not easily deformed when subjected to extrusion and collision, enabling the battery cell 120 to have higher structural strength and improved reliability. Functional components such as electrode terminals can be provided on the end cap 122. The electrode terminals can be used to electrically connect to the electrode assembly 123 for outputting or inputting the electrical energy of the battery cell 120. The material of the end cap 122 can also be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and the embodiments of the present application do not make special restrictions on this. In some embodiments, an insulating structure can also be provided on the inner side of the end cap 122, and the insulating structure can be used to isolate the electrical connection components in the housing 121 from the end cap 122 to reduce the risk of short circuit. Exemplarily, the insulating structure can be plastic, rubber, etc.

[0062] The electrode assembly 123 is a component in the battery cell 120 where an electrochemical reaction occurs. One or more electrode assemblies 123 can be included in the housing 121. The electrode assembly 123 is mainly formed by winding or laminating a positive electrode plate and a negative electrode plate, and usually, a separator is provided between the positive electrode plate and the negative electrode plate to separate the positive electrode plate and the negative electrode plate to prevent internal short circuit between the positive electrode plate and the negative electrode plate. The parts of the positive electrode plate and the negative electrode plate with active substances constitute the main body of the electrode assembly 123, and the parts of the positive electrode plate and the negative electrode plate without active substances respectively constitute the electrode tabs. The positive electrode tab and the negative electrode tab can be located at one end of the main body together or at both ends of the main body respectively. During the charging and discharging process of the battery 100, the positive active substance and the negative active substance react with the electrolyte, and the electrode tabs are connected to the electrode terminals to form a current loop. In addition, the electrode assembly 123 can be a wound structure or a stacked structure.

[0063] In some embodiments, the battery cell 120 can also be provided with a pressure relief mechanism for relieving the internal pressure when the internal pressure or temperature of the battery cell 120 reaches a threshold value.

[0064] According to some embodiments of the present application, Figure 4 is a schematic structural diagram of the battery device in the present application, Figure 5 is Figure 4 the enlarged schematic diagram at position A in Figure 6 is a schematic connection diagram of the first reinforcing plate and the heat conducting pad in the present application. As Figures 4 - 6As shown in the figure, the present application provides a battery device, which includes a separator 11, a circuit board 12, a conductive sheet 13, a temperature collector 14, a first reinforcing plate 15, and a thermal pad 17. Among them, the circuit board 12 is disposed on the side of the separator 11 facing away from the battery cell; the temperature collector 14 is disposed on the side of the circuit board 12 facing away from the separator 11; the first reinforcing plate 15 and the temperature collector 14 are correspondingly located on opposite sides of the circuit board 12, and the thermal pad 17 is disposed between the first reinforcing plate 15 and the battery cell; the conductive sheet 13 is disposed on the side of the separator 11 facing away from the battery cell, and the conductive sheet 13 has an extension 131, and the extension 131 is located between the circuit board 12 and the separator 11, and the extension 131 presses the first reinforcing plate 15 along a first direction. The conductive sheet 13 is electrically connected to the circuit board 12 and the battery cell respectively, wherein the first direction is the thickness direction of the first reinforcing plate 15.

[0065] The first direction in this embodiment is as Figure 5 the Z-axis direction in

[0066] The separator 11 in this embodiment can be formed of PC, resin, etc., and can be specifically determined according to actual conditions, and this specification embodiment does not limit this.

[0067] The circuit board 12 in this embodiment is called a flexible circuit board, which can be made of polyimide or polyester film as a substrate, and is a printed circuit board with good toughness. It has the characteristics of high wiring density, light weight, thin thickness, and good bendability.

[0068] The conductive sheet 13 in this embodiment can be a bus bar, a current collector, etc., and is made of a metal material. For example, the conductive sheet 13 can be a copper part or an aluminum part.

[0069] The temperature collector 14 in this embodiment can be an NTC, a temperature sensor, etc., the first reinforcing plate 15 can be an FR4 reinforcing plate, a ceramic substrate, etc., and the thermal pad 17 can be a fiber thermal pad, a silicone-free thermal pad, etc.

[0070] In this embodiment, the conductive sheet 13 can be snap-fitted on the separator 11, or the conductive sheet 13 can be adhered to the separator 11, and can be specifically determined according to actual conditions, and this specification embodiment does not limit this.

[0071] The extension 131 on the conductive sheet 13 is integrally formed with the conductive sheet 13. The extension 131 is located between the circuit board 12 and the separator 11. At the same time, the extension 131 presses the first reinforcing plate 15 downward along the Z-axis direction.

[0072] Reference Figure 5As shown, the temperature collector 14 is fixed on the upper side of the circuit board 12, the first reinforcing plate 15 is bonded to the lower side of the circuit board 12, and the heat-conducting pad 17 is fixed on the first reinforcing plate 15. At the same time, the heat-conducting pad 17 abuts against the battery cell.

[0073] During use, since the extension part 131 presses the first reinforcing plate 15 downward along the Z-axis direction and the heat-conducting pad 17 is fixed on the first reinforcing plate 15, at this time, the extension part 131 can apply a downward pressure along the Z-axis direction to the heat-conducting pad 17 on the first reinforcing plate 15, so that the heat-conducting pad 17 can abut against the battery cell. In this way, the temperature generated on the battery cell can be well conducted to the temperature collector 14 through the heat-conducting pad 17, so that the temperature collector 14 can accurately collect the temperature on the battery cell. The overall device can press the heat-conducting pad 17 without an additional bracket, with fewer installation procedures, effectively reducing the cost of the battery management system and the process cost.

[0074] According to some embodiments of the present application, as Figure 8 and in combination with Figure 9 shown, a protruding part 151 is provided on the periphery of the first reinforcing plate 15, as Figure 6 and in combination with Figure 7 shown, a pressing edge 132 is provided on the extension part 131, and the pressing edge 132 presses the protruding part 151 along the first direction.

[0075] In this embodiment, the protruding part 151 and the first reinforcing plate 15 are integrally formed. After installation, the pressing edge 132 applies a downward pressure along the Z-axis direction to the protruding part 151. In this way, it is convenient for the extension part 131 to press the first reinforcing plate 15.

[0076] According to some embodiments of the present application, reinforcing ribs (not marked in the figure) are provided on the pressing edge 132. In this way, the strength of the pressing edge 132 can be improved, and further the pressure exerted by the pressing edge 132 on the protruding part 151 can be improved.

[0077] According to some embodiments of the present application, as Figure 9 and in combination with Figure 6 shown, a groove 152 is provided on the first reinforcing plate 15, and at least part of the heat-conducting pad 17 is located in the groove 152 and abuts against the circuit board 12.

[0078] In this embodiment, the groove 152 penetrates along the Z-axis direction. After at least part of the heat-conducting pad 17 is clamped in the groove 152, it abuts against the circuit board 12, and the heat-conducting pad 17 located outside the groove 152 abuts against the battery cell. In this way, it is convenient to fix the heat-conducting pad 17 on the first reinforcing plate 15.

[0079] According to some embodiments of the present application, as Figure 7As shown, the circuit board 12 has a sunken portion 125, and a notch 124 is provided on the circuit board 12. The sunken portion 125 is located in the area surrounded by the notch 124. At the same time, the temperature collector 14 and the first reinforcing plate 15 are correspondingly located on opposite sides of the sunken portion 125. The heat-conducting pad 17 is at least partially located in the groove 152 and abuts against the sunken portion 125.

[0080] Reference Figure 7 As shown, in this embodiment, the sunken portion 125 is located below the circuit board 12. The temperature collector 14 and the first reinforcing plate 15 are correspondingly bonded to the upper and lower sides of the sunken portion 125. The part of the heat-conducting pad 17 located in the groove 152 abuts against the bottom surface of the sunken portion 125.

[0081] Since the sunken portion 125 is located below the circuit board 12 and both the temperature collector 14 and the first reinforcing plate 15 are arranged on the sunken portion 125, the height of the temperature collector 14 relative to the circuit board 12 can be reduced, that is, the temperature collector 14 is prevented from protruding from the circuit board 12.

[0082] According to some embodiments of the present application, the distance from the inner wall of the notch 124 to the sunken portion 125 in the first direction is greater than or equal to the distance from the side of the temperature collector 14 facing away from the sunken portion 125 to the sunken portion 125.

[0083] Since the distance from the inner wall of the notch 124 to the sunken portion 125 in the Z-axis direction is greater than or equal to the distance from the side of the temperature collector 14 facing away from the sunken portion 125 to the sunken portion 125, in this way, the temperature collector 14 will not protrude from the circuit board 12, thereby preventing the temperature collector 14 from being collided.

[0084] According to some embodiments of the present application, as Figure 7 shown, the battery device further includes a second reinforcing plate 16. The second reinforcing plate 16 is arranged on the side of the sunken portion 125 facing away from the first reinforcing plate 15, and the temperature collector 14 is fixed to the second reinforcing plate 16.

[0085] The material of the second reinforcing plate 16 in this embodiment is the same as that of the first reinforcing plate 15, which will not be elaborated here.

[0086] In this embodiment, reference Figure 7 shown, the second reinforcing plate 16 is bonded to the upper side of the sunken portion 125, the temperature collector 14 is fixed on the second reinforcing plate 16, and the temperature collector 14 abuts against the sunken portion 125. By providing the second reinforcing plate 16, it is convenient to fix the temperature collector 14 on the sunken portion 125.

[0087] According to some embodiments of the present application, as Figure 7As shown, a card slot 161 is provided on the second reinforcing plate 16. Among them, the temperature collector 14 is arranged in the card slot 161, and the temperature collector 14 abuts against the sinking part 125. In this way, it is convenient to fix the temperature collector 14 on the second reinforcing plate 16.

[0088] According to some embodiments of the present application, such as Figure 9 and in combination with Figure 8 As shown, a first positioning hole 153 is provided on the first reinforcing plate 15, a second positioning hole 162 is provided on the second reinforcing plate 16, and a third positioning hole is provided on the sinking part 125; at the same time, positioning columns are provided on the isolation plate 11, and the positioning columns sequentially pass through the first positioning hole 153, the third positioning hole, and the second positioning hole 162 along the first direction.

[0089] In this embodiment, when all components are installed, the positioning columns will sequentially pass through the first positioning hole 153, the third positioning hole, and the second positioning hole 162. In this way, it is convenient to fix the first reinforcing plate 15, the second reinforcing plate 16, and the isolation plate 11 together.

[0090] The present application also provides an electrical device, including the battery device according to any one of the embodiments of the present application.

[0091] The specific structure of the battery device in this embodiment refers to the above embodiment. Since all the technical solutions of all the above embodiments are adopted in this electrical device, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be elaborated here one by one.

[0092] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be covered by the scope of the claims and the description of the present application. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery device, characterized in that: include: Isolation panels; A circuit board, the circuit board being arranged on a side of the isolation board away from the battery cell; A temperature collector, the temperature collector is arranged on a side of the circuit board away from the isolation plate; A first reinforcing plate, wherein the first reinforcing plate and the temperature collector are correspondingly located on two opposite sides of the circuit board; A thermal pad, the thermal pad is arranged between the first reinforcing plate and the battery cell; as well as A conductive sheet, the conductive sheet is arranged on a side of the isolation plate away from the battery cell, the conductive sheet has an extension portion, the extension portion is located between the circuit board and the isolation plate, and the extension portion is pressed against the first reinforcing plate along a first direction; The conductive sheet is electrically connected to the circuit board and the battery cell respectively, wherein the first direction is the thickness direction of the first reinforcement plate.

2. The battery device according to claim 1, characterized in that: A protruding portion is arranged at the periphery of the first reinforcing plate, and a pressing edge is arranged on the extending portion, and the pressing edge is pressed against the protruding portion along the first direction.

3. The battery device according to claim 2, characterized in that: The pressing edge is provided with reinforcing ribs.

4. The battery device according to any one of claims 1 to 3, characterized in that: The first reinforcing plate is provided with a groove, and the thermal conductive pad is at least partially located in the groove and abuts against the circuit board.

5. The battery device according to claim 4, characterized in that: The circuit board has a sinking portion, a notch is provided on the circuit board, and the sinking portion is located in the area surrounded by the notch; The temperature collector and the first reinforcement plate are correspondingly located on two opposite sides of the sinking portion; The thermal conductive pad is at least partially located in the groove and abuts against the sinking portion.

6. The battery device according to claim 5, characterized in that: The distance from the inner wall of the notch to the sinking portion along the first direction is greater than or equal to the distance from the side of the temperature collector away from the sinking portion to the sinking portion.

7. The battery device according to claim 5, characterized in that: The battery device further includes a second reinforcing plate, which is disposed on a side of the sinking portion away from the first reinforcing plate, and the temperature collector is fixed to the second reinforcing plate.

8. The battery device according to claim 7, characterized in that: The second reinforcing plate is provided with a slot, the temperature collector is arranged in the slot, and the temperature collector abuts against the sinking portion.

9. The battery device according to claim 7 or 8, characterized in that: The first reinforcing plate is provided with a first positioning hole, the second reinforcing plate is provided with a second positioning hole, and the sinking portion is provided with a third positioning hole; The isolation plate is provided with a positioning column, and the positioning column passes through the first positioning hole, the third positioning hole and the second positioning hole in sequence along the first direction.

10. An electrical device, characterized in that: Comprising the battery device according to any one of claims 1 to 9.

Images