Battery and electric device

Abstract

The utility model is applicable to the technical field of batteries, and provides a battery and a power utilization device, the battery comprises a battery unit, a limiting structure and a heating assembly, the battery unit comprises a plurality of battery monomers arranged in sequence, the limiting structure limits and fixes the plurality of battery monomers, and the limiting structure is used for connecting an insulation detection module. The heating assembly comprises a conductive structure and a heating film, the heating film is stacked on one side of the conductive structure, the conductive structure is electrically connected with the limiting structure, and the conductive structure or the heating film is in contact with the battery unit. According to the battery provided by the invention, whether the heating film is punctured or not can be detected through the insulation detection module, so that the punctured condition of the heating film can be found and processed in time, and the use stability of the battery is improved.

Description

Technical Field

[0001] This application relates to the technical field of batteries, and more specifically, to a battery and an electrical device using the same. Background Art

[0002] With the increasingly serious environmental pollution, people's awareness of environmental protection has gradually increased. At this time, the rapid rise of the new energy industry has provided broad space for the application and development of batteries.

[0003] When the environmental temperature is low, in order to ensure the use stability of the battery, the battery needs to be heated. In related technologies, a heating film is usually used to heat the battery. There is a situation where the heating film is punctured. After the heating film is punctured, the temperature of the punctured area of the heating film rises, and it is easy to ablate the structure located near the heating film, thereby affecting the use stability of the battery. Summary of the Utility Model

[0004] The purpose of the embodiments of this application is to provide a battery and an electrical device using the same, aiming to solve the technical problem that the puncture of the heating film in the prior art affects the use stability of the battery.

[0005] To achieve the above purpose, the technical solution adopted in this application is:

[0006] In a first aspect, a battery is provided, including:

[0007] A battery unit, the battery unit includes a plurality of battery monomers arranged in sequence;

[0008] A limiting structure, the limiting structure limits and fixes the plurality of battery monomers, and the limiting structure is used to connect an insulation detection module;

[0009] A heating component, including:

[0010] A conductive structure, electrically connected to the limiting structure;

[0011] A heating film, stacked on one side of the conductive structure;

[0012] The conductive structure or the heating film is in contact with the battery unit.

[0013] In the battery provided by the embodiments of this application, the heating component is used to heat the battery monomers. The heating film is stacked on one side of the conductive structure, and the conductive structure provides at least a protective effect on the heating film from one side of the heating film. If the heating film is punctured, the heating film will leak electricity to the conductive structure. The conductive structure is electrically connected to the limiting structure. Therefore, the abnormal insulation performance of the limiting structure can be detected through the insulation detection module connected to the limiting structure, so as to facilitate timely detection of the leakage of the heating film and timely handle the leakage of the heating film, improving the use stability of the battery.

[0014] In a possible design, the battery further includes a battery management device, and the battery management device includes an insulation detection module.

[0015] In this setting method, the insulation performance of the limiting structure is detected by the insulation detection module in the battery management device inside the battery, without connecting other external insulation detection modules.

[0016] In a possible design, the limiting structure includes two end plates arranged at intervals in the first direction. The two end plates are respectively fixed by limiting on both sides of the battery cell in the first direction. At least one of the two end plates is used to connect to the insulation detection module and is electrically connected to the conductive structure.

[0017] In this setting method, the conductive structure is electrically connected to the end plate. The end plate is located outside the battery cell in the first direction, with a large operating space, which is convenient for the electrical connection operation between the conductive structure and the end plate.

[0018] In a possible design, the battery further includes fasteners, and the conductive structure is electrically connected to the two end plates respectively through the fasteners.

[0019] In this setting method, both ends of the conductive structure are electrically connected to the end plate, which can increase the electrical connection area between the conductive structure and the limiting structure, improve the electrical connection stability, and the connection between the conductive structure and the end plate is carried out through fasteners. The connection method is simple, easy to operate, and has a high connection efficiency.

[0020] In a possible design, the conductive structure contacts the battery cell, and the heating film is attached to the side of the conductive structure away from the battery cell.

[0021] In this setting method, the conductive structure separates the heating film from the battery cell, thereby preventing scratches between the heating film and the battery cell and further protecting the battery cell.

[0022] In a possible design, the heating component further includes an insulating layer, and the insulating layer is arranged on the surface of the conductive structure facing the battery cell.

[0023] In this setting method, the setting of the insulating layer improves the insulation isolation performance between the conductive structure and the battery cell and improves the protection performance for the battery cell.

[0024] In a possible design, an adhesive layer is arranged on the side of the conductive structure facing the battery cell, and the conductive structure is connected to the battery cell through the adhesive layer.

[0025] In this setting method, the conductive structure and the battery cell are connected through the adhesive layer, with high connection stability, a large contact area, which is beneficial for heat conduction, and the conductive structure has a better effect of limiting and fixing the battery cell.

[0026] In a possible design, a glue-blocking structure is further provided on one side of the conductive structure facing the battery cell, and the glue-blocking structure is arranged around the glue layer on the surface of the conductive structure.

[0027] In this setting method, due to the setting of the glue-blocking structure, a relatively thicker glue layer can be set on one side of the conductive structure to improve the connection stability between the conductive structure and the battery cell.

[0028] In a possible design, the glue-blocking structure is a flexible structure.

[0029] In this setting method, the glue-blocking structure also plays a role of spacer buffering between the battery cell and the conductive structure.

[0030] In a possible design, a part of the glue-blocking structure is located outside the conductive structure.

[0031] In this setting method, the glue-blocking structure is blocked between the edge of the conductive structure and the battery cell, so as to play a better protective role for the battery cell.

[0032] In a possible design, the conductive structure is an aluminum plate or an aluminum foil.

[0033] In this setting method, the aluminum plate and the aluminum foil have good electrical conductivity and relatively light weight.

[0034] In a second aspect, an electrical device is provided. The electrical device includes the battery provided by the above technical solution, and the battery is used to provide electrical energy.

[0035] Since the electrical device includes the above battery, it has at least all the beneficial effects of the above battery, which will not be elaborated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments or the description of 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, other drawings can be obtained based on these drawings without creative efforts.

[0037] Figure 1 is a schematic structural diagram of an electrical device provided by an embodiment of the present application;

[0038] Figure 2 is an exploded view of a battery provided by an embodiment of the present application;

[0039] Figure 3 is a schematic diagram of the relative positions of a battery cell, a limiting structure, and a heating component provided by an embodiment of the present application;

[0040] Figure 4 is a schematic structural diagram of a heating component provided by an embodiment of the present application;

[0041] Figure 5 is Figure 4 a schematic cross-sectional view of the battery in along the A-A direction;

[0042] Figure 6 is a schematic structural diagram of the heating component provided by an embodiment of the present application from another perspective;

[0043] Figure 7 is a schematic diagram of the position where the glue-blocking structure and the glue layer are arranged on the conductive structure provided by an embodiment of the present application;

[0044] Figure 8 is an exploded schematic diagram of the heating component provided by an embodiment of the present application.

[0045] The label details related to the above-mentioned drawings are as follows:

[0046] 1 - electrical device; 10 - battery; 20 - control mechanism; 30 - drive mechanism; 100 - battery unit; 200 - box body; 300 - cover body; 110 - limiting structure; 111 - end plate; 112 - metal strip; 113 - elastic binding band; 120 - battery cell; 130 - heating component; 131 - conductive structure; 1311 - through hole; 1312 - insulating layer; 1313 - glue layer; 1314 - glue-blocking structure; 132 - heating film; 1321 - heating body; 1322 - insulator; 1323 - wire; 1324 - connection terminal; 133 - fastener. Detailed Embodiments

[0047] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application clearer, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0048] In the description of the embodiments of the present application, the term "a plurality" means two or more (including two).

[0049] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installation", "connection", "connection", "fixation" 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 internal connection of two components or the interaction relationship between two components. 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.

[0050] It should be understood that the orientation or positional relationship indicated by terms such as "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the structure or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application.

[0051] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality of" means two or more, unless otherwise specifically defined.

[0052] With the increasingly serious environmental pollution, people's awareness of environmental protection has gradually increased. At this time, the rapid rise of the new energy industry has provided a broad space for the application and development of secondary batteries. Batteries are widely used in many fields such as electric transportation and aerospace.

[0053] In the related art, the battery includes battery cells. A heating film is disposed outside the battery cells. The heating film is adhered to the outside of the battery cells and is in contact with the battery cells to facilitate heating the battery cells. The heating film includes a metal wire coated with an insulating layer. The battery further includes a box body. The battery cells are installed in the box body, and the heating film is located outside the battery cells. Therefore, the two sides of the heating film are the battery cells and the box body respectively. During the production and processing of the battery, particulate matters are likely to be generated, such as metal particles, etc. The particulate matters may be located on the inner wall of the box body or the outer wall of the battery cells. After the heating film comes into contact with the particulate matters, the insulating layer of the heating film is easily punctured by the particulate matters, so that the metal wire in the heating film is exposed, and even some metal wires are broken. On the one hand, the resistance at the punctured part of the heating film will increase, resulting in a temperature rise. On the other hand, the puncture of the heating film will affect the resistance distribution and heat transfer efficiency of the entire heating film, causing the punctured area to be unable to dissipate heat effectively, thus leading to a temperature rise. The abnormal local temperature rise of the heating film will cause the temperature of the structure near the heating film to rise abnormally. If there is a non-metallic structure near the heating film, this structure is easily ablated, thus affecting the use stability of the battery.

[0054] Based on the above considerations, an embodiment of the present application provides a battery, which includes a limiting structure, a battery cell, a conductive structure, and a heating film. The heating film is used to heat the battery cell. The conductive structure is electrically connected to the limiting structure, and the limiting structure is used to limit and fix the battery cell. The heating film is stacked on the conductive structure. The limiting structure is connected to an insulation detection module, and the insulation detection module is used to detect the insulation performance of the limiting structure. In this kind of battery, if the heating film is punctured, the heating film will leak electricity to the conductive structure and be conducted to the limiting structure through the conductive structure. The insulation detection module can know that the heating film leaks electricity by detecting the insulation performance of the limiting structure, so that the situation where the heating film is punctured can be detected relatively faster, facilitating the timely handling of the problem of the punctured heating film and improving the use stability of the battery.

[0055] The battery and the electrical device provided by the embodiments of the present application will be explained and described in detail below.

[0056] The battery disclosed in the embodiments of the present application can be used in electrical devices that use the battery as a power source or various energy storage systems that use the battery as an energy storage element.

[0057] Please refer to Figure 1 , for the convenience of description, in this example, a vehicle is taken as the electrical device 1. The vehicle 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, or an extended-range vehicle, etc. A driving mechanism 30, a control mechanism 20, and a battery 10 can be arranged inside the vehicle. The driving mechanism 30 can be a motor, etc., and the control mechanism 20 is used to control the battery 10 to supply power to the driving mechanism 30. For example, the battery 10 can be arranged at the bottom, the front end, or the rear end of the vehicle. The battery 10 can be used to supply power to other devices of the vehicle. For example, the battery 10 can be used as the operating power source of the vehicle for the vehicle's circuit system, such as for the working power requirements during the start-up, navigation, and operation of the vehicle. In another example, the battery 10 can not only be used as the operating power source of the vehicle but also as the driving power source of the vehicle, replacing or partially replacing fuel or natural gas to provide driving force for the vehicle. The vehicle in this example adopts the above battery 10, and by improving the reliability of the battery 10, it can help improve the reliability of the electrical device 1.

[0058] As Figures 2 to 5As shown in the figure, the battery 10 provided in this embodiment includes a limiting structure 110, a battery cell 100, and a heating component 130. The battery cell 100 includes a plurality of battery monomers 120 arranged in sequence. The limiting structure 110 limits and fixes the plurality of battery monomers 120, and the limiting structure 110 is used to connect an insulation detection module. The heating component 130 is arranged in contact with the battery cell 100. The heating component 130 includes a conductive structure 131 and a heating film 132. The conductive structure 131 is electrically connected to the limiting structure 110. The heating film 132 is stacked on one side of the conductive structure 131. The conductive structure 131 or the heating film 132 is arranged in contact with the battery monomer 120.

[0059] In the embodiment of the present application, the battery cell 100 includes a plurality of battery monomers 120, and the plurality of battery monomers 120 can be electrically connected in series, parallel, or in a hybrid connection manner. The limiting structure 110 is used to limit and fix the plurality of battery monomers 120 in the battery cell 100, so that the plurality of battery monomers 120 are relatively limited and fixed as a whole structure, which is convenient for synchronously moving the plurality of battery monomers 120. Since the limiting structure 110 is used to limit and fix the battery cell 100, the limiting structure 110 is relatively fixedly arranged with the battery cell 100. The limiting structure 110 can limit and fix the battery cell 100 by means of bonding, clamping, interference fit assembly, etc. The limiting structure 110 is connected to an insulation detection module, and the insulation detection module can be a module inherent in the battery 10 itself or an external module. Exemplarily, the battery 10 includes an insulation detection module, and the limiting structure 110 is connected to the insulation detection module. In another example, the battery 10 is applied to an electrical device 1, and the electrical device 1 includes an insulation detection module, and the limiting structure 110 is connected to the insulation detection module. The insulation detection module is used to detect the insulation performance of the limiting structure 110. For example, the insulation detection module can determine whether the insulation performance of the limiting structure 110 is abnormal by detecting whether the voltage of the limiting structure 110 is within the voltage range of the limiting structure 110 in the normal insulation state, or detecting whether the current of the limiting structure 110 is within the current range of the limiting structure 110 in the normal insulation state, or detecting whether the insulation resistance of the limiting structure 110 is within the insulation resistance range of the limiting structure 110 in the normal insulation state, etc.

[0060] The battery monomer 120 can be a secondary battery, and a secondary battery refers to a battery monomer that can be activated by charging after discharging and can continue to be used. The battery monomer 120 can be a lithium-ion battery, a sodium-ion battery, a sodium-lithium-ion battery, a lithium-metal battery, a sodium-metal battery, a lithium-sulfur battery, a magnesium-ion battery, a nickel-metal hydride battery, a nickel-cadmium battery, a lead-acid battery, etc., and the embodiment of the present application does not limit this.

[0061] The battery cell 120 can be a cylindrical battery cell 120, a prismatic battery cell 120, a pouch battery cell 120, or a battery cell 120 of other shapes. The prismatic battery cell 120 includes a square shell battery cell 120, a blade-shaped battery cell 120, and a multi-prismatic battery 10. The multi-prismatic battery 10 is, for example, a hexagonal prism battery 10, etc.

[0062] In one example, as Figure 3 shown, the number of battery cells 120 in the battery unit 100 is multiple. The multiple battery cells 120 are arranged in a first direction, and the heating assembly 130 is located on one side of the multiple battery cells 120 in a second direction. The first direction is perpendicular to the second direction, so that the conductive structure 131 or the heating film 132 in the heating assembly 130 can be in contact with the multiple battery cells 120 respectively. Exemplarily, the battery cell 120 can include an end face defined by a lengthwise edge and a widthwise direction, a facet defined by a widthwise edge and a heightwise edge, and a major face defined by a lengthwise edge and a heightwise edge. The heating assembly 130 can be disposed outside the major face, outside the facet, or outside the end face of the battery cell 120. In Figure 3 it, the widthwise direction of the battery cell 120 is the first direction, the lengthwise direction of the battery cell 120 is the second direction, the major faces of adjacent battery cells 120 face each other, and the facet of each battery cell 120 is in contact with the conductive structure 131 or the heating film 132 in the heating assembly 130.

[0063] As Figure 3 shown, in this embodiment, the lengthwise direction of the battery cell 120 is the Y-axis direction, the widthwise direction of the battery cell 120 is the X-axis direction, and the heightwise direction of the battery cell 120 is the Z-axis direction.

[0064] The heating assembly 130 includes a conductive structure 131 and a heating film 132. The conductive structure 131 is electrically connected to the limiting structure 110, so that the conductive structure 131 and the limiting structure 110 are at the same potential, that is, the conductive structure 131 and the limiting structure 110 are equipotentially connected. The heating film 132 is used to heat the battery cell 120. The heating film 132 can be disposed on the side of the conductive structure 131 facing the battery cell 120, then the heating film 132 is in contact with the battery cell 120, and the heating film 132 can directly heat the battery cell 120. Alternatively, the heating film 132 can be disposed on the side of the conductive structure 131 facing away from the battery cell 120, and the heat of the heating film 132 is transmitted to the battery cell 120 through the conductive structure 131, that is, the heating film 132 heats the battery cell 120 through the conductive structure 131. The heating film 132 can be fixedly connected to the conductive structure 131. Exemplarily, the heating film 132 is bonded to the conductive structure 131.

[0065] The heating film 132 can be an electric heating structure. Exemplarily, as Figure 5As shown, the heating film 132 includes a heating body 1321 and an insulator 1322, and the insulator 1322 covers the outside of the heating body 1321. The heating body 1321 may include a heating wire, such as a metal wire, which heats up when powered on, so as to heat the battery cell 120. In one example, the heating body 1321 includes a heating layer formed by heating wires, and insulators 1322 are respectively arranged on both sides of the heating layer, and the insulator 1322 wraps the heating layer in the middle, so that the heating body 1321 is insulated. When the heating film 132 is punctured, the heating body 1321 of the heating film 132 contacts the conductive structure 131, the current of the heating body 1321 flows to the conductive structure 131, and flows to the limiting structure 110 via the conductive structure 131. As Figure 3 and Figure 4 shown, the heating film 132 may further include a wire 1323 and a connection terminal 1324. The wire 1323 is electrically connected to the heating body 1321, and the wire 1323 extends to the outside of the insulator 1322. One end of the wire 1323 located outside the insulator 1322 is electrically connected to the connection terminal 1324, and the connection terminal 1324 is used to connect to a power supply component to supply power to the heating body 1321. Exemplarily, two wires 1323 are connected to the heating body 1321, and two connection terminals 1324 are respectively connected to the two wires 1323, one of the connection terminals 1324 is a positive terminal, and the other connection terminal 1324 is a negative terminal.

[0066] As Figure 2As shown, the battery 10 may include a plurality of battery cells 100, a plurality of limiting structures 110, and a plurality of heating components 130. The plurality of battery cells 100 are arranged in one-to-one correspondence with the plurality of limiting structures 110. Each limiting structure 110 is used to limit and fix a plurality of battery monomers 120 in the corresponding battery cell 100. At least one heating component 130 is provided for each battery cell 100. As can be seen from the above, a plurality of heating components 130 can be provided in the battery 10. Exemplarily, each heating component 130 can be respectively connected to a power supply component, or the heating components 130 can be connected in series and then connected to the power supply component. In the case of connecting the heating components 130 in series and then connecting to the power supply component, the series connection can be carried out through the positive terminal and the negative terminal of the heating film 132. For example, the positive terminal of the first heating film 132 is electrically connected to the negative terminal of the second heating film 132, and the positive terminal of the second heating film 132 is electrically connected to the negative terminal of the third heating film 132, then these three heating films 132 are connected in series, that is, these three heating components 130 are connected in series. The negative terminal of the first heating film 132 is electrically connected to the negative pole of the power supply component, and the positive terminal of the third heating film 132 is electrically connected to the positive pole of the power supply component, then the three heating components 130 are connected in series to the power supply component. The power supply component can adopt the external structure of the battery 10, or the power supply component can adopt the main circuit in the battery 10. The main circuit includes a main positive terminal and a main negative terminal. The positive terminal of the heating film 132 is electrically connected to the main positive terminal, and the negative terminal of the heating film 132 is electrically connected to the main negative terminal.

[0067] In the battery 10 provided in the embodiment of the present application, the heating component 130 is used to heat the battery monomer 120. The heating film 132 is arranged on one side of the conductive structure 131. The conductive structure 131 at least plays a protective role for the heating film 132 from one side of the heating film 132. If the heating film 132 is punctured, the heating body 1321 of the heating film 132 is exposed and contacts the conductive structure 131. The current of the heating body 1321 flows to the conductive structure 131. The conductive structure 131 is electrically connected to the limiting structure 110. Therefore, the abnormal insulation performance of the limiting structure 110 can be detected through the insulation detection module connected to the limiting structure 110, so as to facilitate timely detection of the leakage of the heating film 132, and facilitate timely handling of the leakage of the heating film 132, improving the use stability of the battery 10.

[0068] In a possible design, the battery 10 further includes a battery management device, and the battery management device includes an insulation detection module.

[0069] A Battery Management System (BMS) is used to monitor and manage the state and performance of battery 10. Exemplarily, the battery management device can be used to manage the charge and discharge states of each battery cell 120, and the battery management device can be used to detect the voltage, current, etc. of each battery cell 120. The battery management device includes an insulation detection module, and the insulation detection module is connected to the limiting mechanism. In this setting method, the insulation performance of the limiting structure 110 is detected by the insulation detection module in the battery management device in battery 10, so that there is no need to connect other external insulation detection modules.

[0070] In one example, the battery management device further includes a control module and an alarm module. Both the alarm module and the insulation detection module are connected to the control module. When the insulation detection module detects that the insulation performance of the limiting structure 110 is abnormal, the control module controls the alarm module to issue an alarm. Exemplarily, the alarm module may include a buzzer, a display screen or a warning light and other structures for alarming. The buzzer can issue an alarm by beeping, the display screen can display text or patterns representing warning information, and the warning light can light up or flash to issue an alarm. In some other examples, the battery management device further includes a control module, and the control module is respectively connected to the heating film 132 and the insulation detection module. When the insulation detection module detects that the insulation performance of the limiting structure 110 is abnormal, the control module controls the heating film 132 to stop heating.

[0071] As Figure 3 shown, in a possible design, the limiting structure 110 includes two end plates 111 arranged at intervals in the first direction. The two end plates 111 are respectively limited and fixed on both sides of the battery unit 100 in the first direction. At least one of the two end plates 111 is used to connect the insulation detection module and is electrically connected to the conductive structure 131.

[0072] The two end plates 111 respectively limit the battery cell 120 at both ends of the battery cell 120 in the first direction. At least one of the two end plates 111 is used to connect the insulation detection module and is electrically connected to the conductive structure 131. That is to say, among the two end plates 111, only one of the end plates 111 may be electrically connected to the insulation detection module, and the end plate 111 electrically connected to the insulation detection module is electrically connected to the conductive structure 131. Or, the two end plates 111 are respectively electrically connected to the insulation detection module, and the two end plates 111 are respectively electrically connected to the conductive structure 131.

[0073] The battery 10 provided in this embodiment can be a module - less battery (CTP, Cell To Pack). In a module - less battery, the battery 10 includes a box body 200. A plurality of battery cells 100 are arranged inside the box body 200. A limiting structure 110 is respectively arranged corresponding to each battery cell 100. The limiting structure 110 is used to limit and fix a plurality of battery monomers 120 in the corresponding battery cell 100 into an integral structure. For example, the limiting structure 110 includes two end plates 111. There is no bottom plate or top plate between the two end plates 111. The two end plates 111 and the plurality of battery monomers 120 can be limited and fixedly connected through a binding structure. The battery 10 may further include a cover body 300. The cover body 300 covers the box body 200. The cover body 300 and the box body 200 enclose a space for accommodating the battery cells 100. Exemplarily, as Figure 3 shown, the two end plates 111 are respectively located on both sides of the plurality of battery monomers 120 in the first direction. The two end plates 111 and the plurality of battery monomers 120 are limited and fixedly connected through two binding structures. The binding structures are arranged around the two end plates 111 and the plurality of battery monomers 120. The two binding structures are spaced apart in the height direction of the battery 10. The binding structure can be a metal band 112 or an elastic binding band 113. Exemplarily, one of the binding structures is a metal band 112, such as a steel band, and the other binding structure is an elastic binding band 113.

[0074] As another embodiment of the battery 10, the battery 10 may not include a box body, but instead, a plurality of battery monomers 120 in the battery cell 100 are limited and fixed through the limiting structure 110 and then assembled into an electrical device.

[0075] In this setting method, the end plate 111 is electrically connected to the conductive structure 131. Since the end plate 111 is located outside the battery cell 100 in the first direction, the operating space in the area where the end plate 111 is located is relatively larger, which is convenient for performing the electrical connection operation between the end plate 111 and the conductive structure 131.

[0076] In some embodiments, the connection between the conductive structure 131 and the end plate 111 can be achieved through fasteners or welding, so that the conductive structure 131 and the end plate 111 are fixedly connected and electrically connected, improving the connection stability between the conductive structure 131 and the end plate 111.

[0077] In some embodiments, as Figure 3 shown, the battery 10 further includes fasteners 133. The conductive structure 131 is electrically connected to the two end plates 111 through the fasteners 133.

[0078] The fasteners 133 can be conductive structures such as rivets or bolts.

[0079] The conductive structure 131 is electrically connected to both end plates. Both end plates 111 are connected to the insulation detection module. Exemplarily, each of the two end plates 111 may be separately connected to the insulation detection module, or the two end plates 111 are electrically connected, and one of the end plates 111 is connected to the insulation detection module, so that any abnormal insulation performance of either of the two end plates 111 can be detected by the insulation detection module.

[0080] In this setting mode, since the conductive structure 131 is electrically connected to the two end plates 111, the electrical connection area between the conductive structure 131 and the limiting structure 110 is relatively large. Thus, when the heating film 132 is punctured, the current of the heating film 132 can be transmitted to the end plate 111 through the electrical connection area between the conductive structure 131 and the limiting structure 110, so as to perform insulation performance detection through the insulation detection module electrically connected to the end plate 111.

[0081] In a possible design, through holes 1311 are respectively arranged at both ends of the conductive structure 131 in the first direction (as Figure 4 shown), and the battery 10 further includes fasteners 133 (as Figure 6 shown). The fasteners 133 pass through the through holes 1311, and the conductive structure 131 is electrically connected to the two end plates 111 respectively through the fasteners 133. Figure 3

[0082] In this setting mode, the connection mode between the conductive structure 131 and the end plate 111 is simple, convenient to operate, and has high connection efficiency.

[0083] Figure 3 As shown, the length direction of the conductive structure 131 is the X-axis direction, the width direction of the conductive structure 131 is the Z-axis direction, and the thickness direction of the conductive structure 131 is the Y-axis direction. As Figure 4 shown, the through holes 1311 penetrate through the conductive structure 131 along the thickness direction of the conductive structure 131. A plurality of through holes 1311 may be respectively arranged at both ends of the conductive structure 131 in the length direction, and the number of the through holes 1311 may be set according to factors such as the weight of the conductive structure 131 and the width of the conductive structure 131. If the weight of the conductive structure 131 is relatively large and / or the width of the conductive structure 131 is relatively large, more through holes 1311 may be set to fix the conductive structure 131 and the end plate 111 through more rivets.

[0084] Figure 3 In a possible design, as shown, the conductive structure 131 contacts the battery cell 120, and the heating film 132 is attached to the side of the conductive structure 131 away from the battery cell 120.

[0085] ​The heating film 132 can be attached to the conductive structure 131 through double-sided tape, or glue can be applied to the side of the heating film 132 facing the conductive structure 131 to attach the heating film 132 to the conductive structure 131. The heating film 132 is located on the side of the conductive structure 131 away from the battery cell 120, and the heat generated by the heating film 132 is transferred to the battery cell 120 via the conductive structure 131 to heat the battery cell 120.

[0086] In this setting mode, the conductive structure 131 separates the heating film 132 from the battery cell 120, thereby reducing the risk of scratching between the heating film 132 and the battery cell 120 and further protecting the battery cell 120.

[0087] In a possible design, as Figure 5 shown, the heating assembly 130 further includes an insulating layer 1312, and the insulating layer 1312 is disposed on the surface of the conductive structure 131 facing the battery cell 120.

[0088] In some embodiments, the insulating layer 1312 can be formed by spraying insulating paint, and the insulating paint is sprayed on the area of the surface of the conductive structure 131 facing the battery cell 120 and opposite to the battery cell 120 to form the insulating layer 1312. The insulating layer 1312 formed by spraying insulating paint has strong connection stability with the conductive structure 131. In other embodiments, the insulating layer 1312 can be a layered structure made of insulating material, and the insulating layer 1312 is fixed in the area of the conductive structure 131 facing the battery cell 120. The insulating layer 1312 and the conductive structure 131 can be bonded.

[0089] In the first direction, the length of the insulating layer 1312 is less than the length of the conductive structure 131. In the side surface of the conductive structure 131 facing the battery cell 120, the insulating layer 1312 covers a part of the side surface, and the area not covered by the insulating layer 1312 is used for electrically connecting with the limiting structure 110.

[0090] In this setting mode, the setting of the insulating layer 1312 improves the insulation performance between the conductive structure 131 and the battery cell 120 and improves the protection performance for the battery cell 120.

[0091] In a possible design, as Figure 5 and Figure 7 shown, a glue layer 1313 is disposed on the side of the conductive structure 131 facing the battery cell 120, and the conductive structure 131 is connected to the battery cell 120 through the glue layer 1313.

[0092] Since the conductive structure 131 is connected to the limiting structure 110, and the limiting structure 110 plays a role in limiting the battery cell 120, the conductive structure 131 is connected to the battery cell 120, and the battery cell 120 is indirectly connected to the limiting structure 110 through the conductive structure 131, thereby improving the connection stability between the battery cell 120 and the limiting structure 110. The connection between the conductive structure 131 and the battery cell 120 enables the conductive structure 131 and the battery cell 120 to be in stable contact even in the case of shaking, which is conducive to heat conduction between the conductive structure 131 and the battery cell 120, so that the heat generated by the heating film 132 can be transferred to the battery cell 120 via the conductive structure 131. The adhesive layer 1313 can be a double-sided colloid, such as double-sided adhesive paper or double-sided adhesive tape, and the adhesive layer 1313 can also be formed by a glue solution coated on the conductive structure 131. The conductive structure 131 and the battery cell 120 are connected through the adhesive layer 1313. The connection operation is simple, convenient and low-cost, and the connection area between the conductive structure 131 and the battery cell 120 is relatively large through the adhesive layer 1313, and the connection stability is relatively strong.

[0093] In a possible design, as Figures 5 to 8 described above, a glue-blocking structure 1314 is further provided on the side of the conductive structure 131 facing the battery cell 120, and the glue-blocking structure 1314 is arranged around the adhesive layer 1313 on the surface of the conductive structure 131.

[0094] As Figure 7 and Figure 8 shown, the glue-blocking structure 1314 surrounds the periphery of the adhesive layer 1313 for one week. During the process of connecting the heating component 130 and the battery cell 120, the glue-blocking structure 1314 can be first arranged on the conductive structure, and the glue-blocking structure 1314 forms a closed ring. The area surrounded by the glue-blocking structure 1314 is the glue-coating area, and glue solution is coated in the glue-coating area, and the glue solution located in the glue-coating area forms the adhesive layer 1313. Due to the arrangement of the glue-blocking structure 1314, a groove-shaped area is formed between the glue-blocking structure 1314 and the conductive structure 131 to accommodate more glue solution, and it is convenient to control the shape and size of the glue-coating area. By controlling the thickness of the glue-blocking structure 1314, the thickness of the adhesive layer 1313 can be controlled to a certain extent, so as to facilitate the formation of the adhesive layer 1313 with a set thickness. Exemplarily, in the case where the size of the conductive structure 131 is relatively large, the connection strength between the conductive structure 131 and the battery cell 120 can be improved by setting a relatively thicker adhesive layer 1313, and the connection stability between the conductive structure 131 and the battery cell 120 can be enhanced.

[0095] In a possible design, the glue-blocking structure 1314 is a flexible structure. The glue-blocking structure 1314 is made of a flexible material, which can be foam, rubber, silica gel, etc. Since the glue-blocking structure 1314 is made of a flexible material and the flexible material has a certain elastic deformation ability, the glue-blocking structure 1314 can play a certain buffering effect between the conductive structure 131 and the battery cell 120.

[0096] In a possible design, as Figure 6 and Figure 7 shown, a part of the glue-blocking structure 1314 is located outside the conductive structure 131.

[0097] In an example, the end of the conductive structure 131 in the length direction is connected to the end plate 111, and the edge of the conductive structure 131 in the width direction is distributed opposite to the battery cell 120. A part of the glue-blocking structure 1314 is located outside the conductive structure in the width direction, and the glue-blocking structure 1314 covers the edge of the conductive structure 131 in the width direction. Since the glue-blocking structure 1314 is located between the conductive structure 131 and the battery cell 120, the glue-blocking structure 1314 plays a role of buffering and isolating between the edge of the conductive structure 131 in the width direction and the battery cell 120, and can prevent the edge of the conductive structure 131 in the width direction from directly contacting the battery cell 120 to a certain extent, thus playing a protective role for the battery cell 120.

[0098] In some embodiments, the conductive structure 131 is an aluminum plate or an aluminum foil.

[0099] The aluminum plate is a plate made of a material containing metallic aluminum. The aluminum plate has good electrical conductivity and relatively small weight. The aluminum plate has good electrical conductivity, and the structural strength of the aluminum plate is relatively high and the weight is relatively small. Since the weight of the aluminum plate is relatively lighter, the protective force for the heating film 132 and the battery cell 120 is stronger. Since the two ends of the aluminum plate in the first direction are respectively connected to the two end plates 111, and the aluminum plate is located on one side of the battery cell 120 in the second direction, the aluminum plate plays a role of limiting the battery cell 120 in the second direction on the one hand and plays a certain protective role for the battery cell 120 in the second direction on the other hand.

[0100] Compared with the aluminum plate, the thickness of the aluminum foil is usually relatively thinner. Exemplarily, the thickness of the aluminum foil is equal to or less than 0.2 mm, and the weight of the aluminum foil is relatively light, so that the weight of the battery 10 is relatively light. The aluminum foil can be bonded to the battery cell 120 through the adhesive layer 1313 to improve the connection stability between the aluminum foil and the battery cell 120. The adhesive layer 1313 can be double-sided adhesive paper, or an adhesive can be coated in the relative area between the aluminum foil and the battery cell 120 to form the adhesive layer 1313. An insulating layer 1312 can be provided in the area of the aluminum foil opposite to the battery cell 120. The insulating layer 1312 can be a layered structure made of an insulating material, and the insulating layer 1312 can be pasted on the side of the aluminum foil facing the battery cell 120. When the insulating layer 1312 is provided on the aluminum foil, the adhesive layer 1313 is located on the side of the insulating layer 1312 facing the battery cell 120. That is to say, the aluminum foil is bonded to the insulating layer 1312, and the insulating layer 1312 is bonded to the battery cell 120 through the adhesive layer 1313, thereby fixedly connecting the aluminum foil and the battery cell 120.

[0101] In a specific embodiment of the present application, the battery 10 includes a limiting structure 110, battery cells 120, and a heating component 130. The limiting structure 110 includes two end plates 111 spaced apart from each other in a first direction. The number of battery cells 120 is multiple, and the multiple battery cells 120 are arranged in a group in sequence along the first direction. The two end plates 111 are respectively located on both sides of the group of battery cells 120 in the first direction. The heating component 130 includes a conductive structure 131 and a heating film 132. The conductive structure 131 is an aluminum plate. The two opposite side surfaces of the aluminum plate defined by the length direction and the width direction are respectively referred to as the first surface and the second surface. The first surface is the side surface of the aluminum plate facing the battery cells 120, and the second surface is the side surface of the aluminum plate away from the battery cells 120. The aluminum plate sequentially includes a first region, a second region, and a third region along the first direction. The first region and the third region are respectively located on both sides of the second region, and the second region is disposed opposite to the battery cells 120. The first region and the third region are respectively disposed opposite to the two end plates 111. Through holes 1311 are respectively provided in the first region and the third region along the thickness direction of the aluminum plate. The first region is connected to one end plate 111 through at least two rivets, and the third region is connected to the other end plate 111 through at least two rivets. An insulating layer 1312 is provided on the first surface of the second region. The insulating layer 1312 can be formed by spraying insulating paint on the aluminum plate. An annular glue-blocking structure 1314 is provided on the side of the insulating layer 1312 facing the battery cells 120. The glue-blocking structure 1314 is a foam. A glue layer 1313 is provided in the region surrounded by the glue-blocking structure 1314. The conductive structure 131 is bonded to the battery cells 120 through the glue. The glue-blocking structure 1314 extends to the outside of the edge of the conductive structure 131 in the width direction of the conductive structure 131, so as to cover the edge of the conductive structure 131, thereby playing a role in protecting and buffering the edge of the conductive structure 131, and the glue-blocking structure 1314 is interposed between the edge of the battery cells 120 and the conductive structure 131, also playing a role in protecting and buffering the battery cells 120. The heating film 132 is pasted on the second surface of the second region. The battery 10 further includes a battery management device. The battery management device includes an insulation detection module for detecting the insulation performance of the limiting structure 110. The battery management device may further include an alarm module for issuing an alarm when the insulation detection module detects that the insulation performance of the limiting structure 110 is abnormal.

[0102] In another specific embodiment of the present application, the battery 10 includes a limiting structure 110, battery cells 120, and a heating component 130. The limiting structure 110 includes two end plates 111 spaced apart from each other in a first direction. The number of battery cells 120 is multiple, and the multiple battery cells 120 are arranged in a group in sequence along the first direction. The two end plates 111 are respectively located on both sides of the group of battery cells 120 in the first direction. The heating component 130 includes a conductive structure 131 and a heating film 132. The conductive structure is an aluminum foil. The two ends of the aluminum foil in the first direction are respectively fixedly connected and electrically connected to the two end plates 111. A heating film 132 is adhered to the side of the aluminum foil facing away from the battery cells 120. An adhesive layer 1313 is provided on the side of the aluminum foil facing the battery cells 120. The aluminum plate is connected to the battery cells 120 through the adhesive layer 1313. The battery 10 further includes a battery management device, and the battery management device includes an insulation detection module for detecting the insulation performance of the limiting structure 110. The battery management device may further include an alarm module for issuing an alarm when the insulation detection module detects that the insulation performance of the limiting structure 110 is abnormal.

[0103] The embodiment of the present application further provides an electrical device 1, and the electrical device 1 includes the battery 10 provided by the above technical solution, and the battery 10 is used to provide electrical energy.

[0104] The electrical device 1 provided by the embodiment of the present application may be, but is not limited to, a mobile phone, a tablet computer, a laptop computer, an electric toy, an electric tool, a battery car, an electric vehicle, a ship, a spacecraft, etc. Among them, the electric toy may include a fixed or mobile electric toy, for example, a game console, an electric vehicle toy, an electric ship toy, an electric aircraft toy, etc., and the spacecraft may include an airplane, a rocket, a space shuttle, a spaceship, etc.

[0105] 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 them; 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 described 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, characterized in that: include: A battery unit, wherein the battery unit comprises a plurality of battery cells arranged in sequence; A limiting structure, wherein the limiting structure limits and fixes the plurality of battery cells, and the limiting structure is used to connect an insulation detection module; Heating assembly, comprising: A conductive structure electrically connected to the limiting structure; A heating film is stacked on one side of the conductive structure; The conductive structure or the heating film is arranged in contact with the battery cell.

2. The battery according to claim 1, characterized in that The battery further comprises a battery management device, and the battery management device comprises the insulation detection module.

3. The battery according to claim 1, characterized in that The limiting structure includes two end plates spaced apart along a first direction, the two end plates are respectively fixed on both sides of the battery unit in the first direction, and at least one of the two end plates is used to connect the insulation detection module and is electrically connected to the conductive structure.

4. The battery according to claim 3, characterized in that The battery further includes a fastener, and the conductive structure is electrically connected to the two end plates respectively through the fastener.

5. The battery according to claim 1, characterized in that The conductive structure is in contact with the battery cell, and the heating film is attached to a side of the conductive structure away from the battery cell.

6. The battery according to claim 5, characterized in that The heating assembly further includes an insulating layer, and the insulating layer is disposed on a surface of the conductive structure facing the battery cell.

7. The battery according to claim 5, characterized in that A glue layer is provided on a side of the conductive structure facing the battery cell, and the conductive structure is connected to the battery cell through the glue layer.

8. The battery according to claim 7, characterized in that A glue blocking structure is also arranged on a side of the conductive structure facing the battery cell, and the glue blocking structure is arranged on a surface of the conductive structure and surrounds the glue layer.

9. The battery according to claim 8, characterized in that The glue blocking structure is a flexible structure.

10. The battery according to claim 9, characterized in that Part of the glue blocking structure is located outside the conductive structure.

11. The battery according to any one of claims 1 to 10, characterized in that The conductive structure is an aluminum plate or an aluminum foil.

12. An electrical device, characterized in that: The invention comprises a battery as claimed in any one of claims 1 to 11, wherein the battery is used to provide electrical energy.

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