Battery device and electric device

Abstract

The utility model discloses a battery device and a power utilization device, a battery frame and a protection plate assembly of the battery device are connected to form a containing cavity, a battery monomer assembly is installed in the containing cavity, the protection plate assembly comprises a first plate body, a second plate body and a connecting piece, the first plate body is connected to the battery frame, and the second plate body is connected to the second plate body; the second plate body is located on the side, away from the battery monomer assembly, of the first plate body, the connecting piece is connected between the first plate body and the second plate body and comprises a first connecting layer and a second connecting layer, the first connecting layer is connected to the side, facing the second plate body, of the first plate body, and the second connecting layer is connected to the side, facing the first plate body, of the second plate body; the first connecting layer and the second connecting layer are detachably connected. According to the battery device, large-area connection between the first plate body and the second plate body is achieved, the strength and stability of connection between the first plate body and the second plate body are improved, the protection plate assembly can bear certain vibration impact, the abnormal sound risk can be eliminated, and the Pack dominant frequency is improved.

Description

Technical Field

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

[0002] The bottom guard plate of the power battery and the bottom plate / cold plate are only supported by foam and only have a buffering function. There is no connection between the bottom guard plate and the bottom area of ​​the bottom plate / cold plate battery cell for a large area. The battery frame has limited rigidity due to the bottom guard plate, the bottom guard plate has poor effect in preventing abnormal noise, the main frequency of vibration impact is low, and the risk of abnormal noise caused by vibration impact is high. If the foam is fixed between the bottom guard plate and the bottom plate / cold plate, and the bottom guard plate and the bottom plate / cold plate are fixedly connected, the guard plate and the bottom guard plate cannot be separated later. Utility Model Content

[0003] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the present application is to propose a battery device that realizes a large-area connection between the first plate body and the second plate body, and is used to increase the strength and stability of the connection between the first plate body and the second plate body, so that the guard plate assembly can withstand a certain vibration impact, thereby eliminating the risk of abnormal noise and improving the main frequency of the pack.

[0004] The present application also provides an electrical device having the battery device.

[0005] According to the first aspect of the present application, the battery device includes: a battery cell assembly; a battery frame; a guard plate assembly, wherein the guard plate assembly and the battery frame are connected to construct a accommodating cavity, and the battery cell assembly is installed in the accommodating cavity, the guard plate assembly includes a first plate body, a second plate body and a connecting member, the first plate body is connected to the battery frame, the second plate body is located on the side of the first plate body facing away from the battery cell assembly, the connecting member is connected between the first plate body and the second plate body, the connecting member includes a first connecting layer and a second connecting layer, the first connecting layer is connected to the side of the first plate body facing the second plate body, the second connecting layer is connected to the side of the second plate body facing the first plate body, and the first connecting layer and the second connecting layer are detachably connected.

[0006] According to the battery device of the present application, the detachable connection between the first connecting layer and the second connecting layer can be realized, so that the first plate body and the second plate body can be detachably connected, and a large-area connection between the first plate body and the second plate body can be realized, which is used to increase the strength and stability of the connection between the first plate body and the second plate body, so that the guard plate assembly can withstand a certain vibration impact, thereby eliminating the risk of abnormal noise and improving the main frequency of the Pack.

[0007] In some embodiments, the first connecting layer and the second connecting layer are adhesively connected.

[0008] In this embodiment, the first connecting layer and the second connecting layer are bonded and connected to each other, so that the connection between the first plate body and the second plate body can be simple and easy to operate.

[0009] In some embodiments, the connecting member includes a first connecting member and a second connecting member, the first connecting member includes a first fixing layer and the first connecting layer, the first fixing layer is connected between the first plate body and the first connecting layer, the second connecting member includes a second fixing layer and the second connecting layer, the second fixing layer is connected between the second plate body and the second connecting layer.

[0010] In this embodiment, the first connecting layer is fixedly connected to the first plate body by providing a first fixing layer; and the second connecting layer is fixedly connected to the second plate body by providing a second fixing layer.

[0011] In some embodiments, the first connecting member further includes a first substrate layer, which is located between the first fixing layer and the first connecting layer; the second connecting member further includes a second substrate layer, which is located between the second fixing layer and the second connecting layer.

[0012] In this embodiment, a first substrate layer and a second substrate layer are provided. The first substrate layer and the second substrate layer have good softness and wear resistance and can withstand a certain tension and pressure, so as to further increase the tension and pressure resistance of the guard plate assembly.

[0013] In some embodiments, the first fixed layer includes a first glue-coated surface and a second glue-coated surface arranged opposite to each other, the first glue-coated surface is connected to the first plate body, and the second glue-coated surface is connected to the first substrate layer; and / or, the second fixed layer includes a third glue-coated surface and a fourth glue-coated surface arranged opposite to each other, the third glue-coated surface is connected to the second plate body, and the fourth glue-coated surface is connected to the second substrate layer.

[0014] In this embodiment, the first fixed layer is connected to the first plate body through the first glue coated surface, and the first fixed layer is connected to the first substrate layer through the second glue coated surface, so that the connection method of the first fixed layer to the first plate body and the first substrate layer is simple and low in cost; the second fixed layer is connected to the second plate body through the third glue coated surface, and the second fixed layer is connected to the second substrate layer through the fourth glue coated surface, so that the connection method of the second fixed layer to the second plate body and the second substrate layer is simple and low in cost.

[0015] In some embodiments, the first substrate layer and / or the second substrate layer are an integrally formed part.

[0016] In this embodiment, by setting the first substrate layer and / or the second substrate layer as an integrally formed part, the first substrate layer and the second substrate layer can have a good buffering effect, good corrosion resistance and low cost, thereby making the connecting part have a good buffering effect.

[0017] In some embodiments, the connecting member comprises Velcro, and one of the first connecting layer and the second connecting layer is a hair layer, and the other is a round hair layer.

[0018] In this embodiment, the connecting piece includes Velcro, so that the installation and disassembly between the first plate body and the second plate body are faster and can be completed without using tools. The Velcro can provide sufficient fixing force to improve the connection strength between the first plate body and the second plate body. The connection position between the first plate body and the second plate body can also be adjusted as needed, which can improve the practicality of the connecting piece.

[0019] In some embodiments, the connector also includes at least one third connector. When there is one third connector, the third connector is detachably connected between the first connecting layer and the second connecting layer; when there are multiple third connectors, the multiple third connectors are all located between the first connecting layer and the second connecting layer, and two adjacent third connectors are detachably connected. The third connector close to the first connecting layer is detachably connected to the first connecting layer, and the third connector close to the second connecting layer is detachably connected to the second connecting layer.

[0020] In this embodiment, at least one third connecting member is provided between the first connecting layer and the second connecting layer, and the third connecting member can be detachably connected to the second connecting layer and the second connecting layer, so as to further enhance the buffering capacity of the guard plate assembly.

[0021] In some embodiments, each of the third connecting members includes a third connecting layer and a fourth connecting layer that are relatively arranged. When there is one third connecting member, the third connecting layer is detachably connected to the first connecting layer, and the fourth connecting layer is detachably connected to the second connecting layer; when there are multiple third connecting members, of two adjacent third connecting members, the third connecting layer of one third connecting member is detachably connected to the fourth connecting layer of the other third connecting member, and the third connecting layer close to the first connecting layer is detachably connected to the first connecting layer, and the fourth connecting layer close to the second connecting layer is detachably connected to the second connecting layer.

[0022] In this embodiment, by arranging the connection mode between the first connection layer and the third connection layer to be the same as the connection mode between the second connection layer and the fourth connection layer, the arrangement mode of the connection member can be simple and the processing cost can be low.

[0023] In some embodiments, the third connecting member further includes: a third substrate layer, wherein the third substrate layer is located between the third connecting layer and the fourth connecting layer.

[0024] In this embodiment, a third substrate layer is provided. The third substrate layer has good softness and wear resistance and can withstand a certain tension and pressure, so as to further enhance the buffering capacity of the guard plate assembly.

[0025] In some embodiments, the third substrate layer is an integrally formed piece.

[0026] In this embodiment, by setting the third substrate layer as an integrally formed part, the third substrate layer can have a good buffering effect, good corrosion resistance and low cost, thereby making the connecting piece have a good buffering effect.

[0027] In some embodiments, the connecting member includes Velcro, the first connecting layer and the fourth connecting layer are both bristle layers, and the second connecting layer and the third connecting layer are both round fleece layers; or, the first connecting layer and the fourth connecting layer are both round fleece layers, and the second connecting layer and the third connecting layer are both bristle layers.

[0028] In this embodiment, the connecting piece includes Velcro, so that the installation and disassembly between the first plate body and the second plate body are faster and can be completed without using tools. The Velcro can provide sufficient fixing force to improve the connection strength between the first plate body and the second plate body. The connection position between the first plate body and the second plate body can also be adjusted as needed, which can improve the practicality of the connecting piece.

[0029] In some embodiments, a first mounting portion is provided on the first plate body and / or the second plate body, a portion of the first mounting portion extends between the first plate body and the second plate body, and the connecting member has a first avoidance area for avoiding the first mounting portion, or a second mounting portion is provided on the first plate body and / or the second plate body, the battery device (101) also includes a beam body, the beam body is installed in the accommodating cavity, the second mounting portion is connected to the beam body, and in a projection plane perpendicular to the thickness direction of the first plate body, the connecting member has a second avoidance area for avoiding the beam body.

[0030] In this embodiment, within the projection plane perpendicular to the thickness direction of the first plate body, the connector has a second avoidance area for avoiding the beam body. The battery device is fixed to the electrical device through the beam body and the second mounting portion. The second avoidance area is arranged opposite to the beam body, which can avoid the fastener from passing through the connector and can also reduce the amount of the connector, thereby reducing the cost of the connector.

[0031] In some embodiments, there are multiple connectors, which are spaced apart from each other. An electrical component is also provided in the accommodating cavity, which is spaced apart from the battery cell assembly. At least one connector is arranged opposite to the battery cell assembly, and at least one connector is arranged opposite to the electrical component.

[0032] In this embodiment, at least one connector is disposed opposite to the battery cell assembly, and at least one connector is disposed opposite to the electrical component. The connector is used to absorb external impact force and protect the battery cell assembly and the electrical component.

[0033] In some embodiments, in a direction perpendicular to the thickness of the first plate, the area of ​​the projection surface of the connector is A, and the area of ​​the projection surface of the first plate is B, satisfying: 0.3≤A / B≤0.9.

[0034] In this embodiment, the above formula is satisfied by setting the connection between the connecting member and the first plate body. The connecting member can not only improve the connection strength between the first plate body and the second plate body, but also improve the ability of the guard plate assembly to withstand vibration impact without occupying too much space between the first plate body and the second plate body.

[0035] In some embodiments, the first plate body is a steel plate or an aluminum plate; and / or, the second plate body is a steel plate or an aluminum plate.

[0036] In this embodiment, the first plate body is set to be a steel plate or an aluminum plate, and the second plate body is set to be a steel plate or an aluminum plate. Both the steel plate and the aluminum plate have high strength and rigidity and can better support the battery cell assembly. The steel plate can be processed in a variety of ways to meet different design requirements.

[0037] In some embodiments, the second plate is detachably located at the bottom of the battery frame.

[0038] In this embodiment, a second plate body is detachably mounted on the bottom of the battery frame. The connecting part can absorb the impact force from the bottom and has a good buffering effect, so that the guard plate assembly can withstand a certain vibration impact, improve the performance of the guard plate assembly to resist bottom ball, eliminate the risk of abnormal noise, and improve the main frequency of the Pack.

[0039] In some embodiments, the battery device further includes: a heat exchange member, the heat exchange member is located between the first plate body and the second plate body, the heat exchange member has a receiving space penetrating in the up and down direction, and the connecting member is arranged in the receiving space.

[0040] In this embodiment, the heat exchanger is located between the first plate body and the second plate body. The heat exchanger has a accommodating space that penetrates in the up and down directions. The connecting member is arranged in the accommodating space. The connecting member can be used to fill the accommodating space. At the same time, the first plate body and the second plate body can be detachably connected, and the impact resistance of the guard plate assembly can be improved.

[0041] The electrical device according to the second aspect of the present application includes: the battery device according to the first aspect of the present application.

[0042] According to the electric device of the present application, since the performance of the battery device is improved, it is helpful to improve the working power performance of the electric device.

[0043] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0045] Figure 1 is a schematic diagram of a vehicle according to some embodiments of the present application;

[0046] Figure 2 is a schematic diagram of a battery frame and a guard plate assembly exploded according to some embodiments of the present application;

[0047] Figure 3 is a bottom view of a battery device according to some embodiments of the present application, wherein the second plate is not shown;

[0048] Figure 4 is a schematic diagram of the cooperation between the connecting member and the second plate according to some embodiments of the present application;

[0049] Figure 5 is a schematic diagram of the arrangement of connectors according to some embodiments of the present application;

[0050] Figure 6 is a side view of a connector according to some embodiments of the present application;

[0051] Figure 7 yes Figure 6 The enlarged view of point A in the middle;

[0052] Figure 8 is a side view of a connector according to some other embodiments of the present application;

[0053] Fig. 9 yes Figure 8 Enlarged view of point B in the middle.

[0054] Reference numerals:

[0055] 100. Vehicle; 101. Battery device; 102. Controller; 103. Motor;

[0056] 10. Battery frame; 11. Beam body; 12. Accommodation cavity; 13. Fasteners;

[0057] 20. Guard plate assembly; 1. First plate body; 111. First mounting hole; 2. Second plate body; 21. Second mounting hole; 22. Mounting cavity; 3. Connector; 31. First connector; 311. First fixing layer; 312. First connecting layer; 313. First substrate layer; 32. Second connector; 321. Second fixing layer; 322. Second connecting layer; 323. Second substrate layer; 33. Third connector; 331. Third connecting layer; 332. Fourth connecting layer; 333. Third substrate layer; 34. Second avoidance area;

[0058] 30. Heat exchange components. DETAILED DESCRIPTION

[0059] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0060] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing 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, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0061] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0062] At present, from the perspective of market development, 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 vehicles such as electric bicycles, electric motorcycles, electric cars, as well as military equipment and aerospace and other fields. With the continuous expansion of the application field of power batteries, the market demand is also constantly expanding.

[0063] The bottom guard plate of the power battery and the bottom plate / cold plate are only supported by foam and only have a buffering function. There is no connection between the bottom guard plate and the bottom area of ​​the bottom plate / cold plate battery cell for a large area. The battery frame has limited rigidity due to the bottom guard plate, the bottom guard plate has poor effect in preventing abnormal noise, the main frequency of vibration impact is low, and the risk of abnormal noise caused by vibration impact is high. If the foam is fixed between the bottom guard plate and the bottom plate / cold plate, and the bottom guard plate and the bottom plate / cold plate are fixedly connected, the guard plate and the bottom guard plate cannot be separated later.

[0064] Based on the above considerations, a connecting member is arranged between the first plate body and the second plate body, and the connecting member includes a first connecting layer and a second connecting layer. The first connecting layer is connected to a side of the first plate body facing the second plate body, and the second connecting layer is connected to a side of the second plate body facing the first plate body. The first connecting layer and the second connecting layer are detachably connected, so that a large-area connection between the first plate body and the second plate body can be achieved, which is used to increase the strength and stability of the connection between the first plate body and the second plate body, so that the connecting member can withstand a certain vibration impact, thereby eliminating the risk of abnormal noise and improving the main frequency of the Pack.

[0065] The battery device disclosed in the present application can be used in various energy storage systems that use the battery device as a power source or use the battery device as an energy storage element. The power device can be, but is not limited to, a mobile phone, a tablet, a laptop computer, an electric toy, an electric tool, a battery car, an electric car, a ship, a spacecraft, and the like. Among them, the electric toy can include a fixed or mobile electric toy, for example, a game console, an electric car toy, an electric ship toy, and an electric airplane toy, and the like, and the spacecraft can include an airplane, a rocket, a space shuttle, and a spacecraft, and the like.

[0066] For the convenience of explanation, the following embodiments are described by taking a vehicle 100 as an example of an electrical device in one embodiment of the present application. The vehicle 100 may be a new energy vehicle, which may be a pure electric vehicle, a hybrid vehicle, or an extended-range vehicle, etc. A battery device 101 is provided inside the vehicle 100, and the battery device 101 may be provided at the bottom, head, or tail of the vehicle 100. The battery device 101 may be used to power the vehicle 100, for example, the battery device 101 may be used as an operating power source for the vehicle 100. The vehicle 100 may also include a controller 102 and a motor 103, and the controller 102 is used to control the battery device 101 to power the motor 103, for example, for starting, navigating, and driving the vehicle 100.

[0067] In some embodiments of the present application, the battery device 101 can not only serve as an operating power source for the vehicle 100 , but also serve as a driving power source for the vehicle 100 , replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 100 .

[0068] Figure 2 is a schematic diagram of a battery frame 10 and a guard plate assembly 20 according to an embodiment of the present application. Figure 3 1 is a bottom view of a battery device 101 according to an embodiment of the present application, wherein the second plate 2 is not shown. The battery device 101 includes a battery frame 10, a battery cell assembly and a heat exchanger 30. The battery frame 10 itself forms a receiving cavity 12, and the battery cell assembly is disposed in the receiving cavity 12. The heat exchanger 30 is located in the receiving cavity 12 and between the battery cell assembly and the battery frame 10. The battery frame 10 is used to provide a receiving space for the battery cell assembly and the heat exchanger 30.

[0069] Exemplarily, the battery device 101 may further include a guard plate assembly 20, which is disposed on the lower side of the battery frame 10 and connected to the battery frame 10 to form a receiving cavity 12. The guard plate assembly 20 may be made of a variety of materials, including but not limited to: copper, iron, aluminum, stainless steel, aluminum alloy, etc.

[0070] Exemplarily, in the battery device 101, the battery cell assembly includes a plurality of battery cells, and the plurality of battery cells can be connected in series, in parallel, or in a mixed connection. A mixed connection means that the plurality of battery cells are both connected in series and in parallel. The plurality of battery cells can be directly connected in series, in parallel, or in a mixed connection, and then the battery cell assembly composed of the plurality of battery cells is accommodated in the battery frame 10; of course, the battery device 101 can also be a plurality of battery cells first connected in series, in parallel, or in a mixed connection to form a module of the battery device 101, and then the plurality of battery cell modules are connected in series, in parallel, or in a mixed connection to form a whole, and accommodated in the battery frame 10. The battery device 101 can also include other structures, for example, the battery device 101 can also include a busbar component for realizing electrical connection between the plurality of battery cells.

[0071] Each battery cell may be a secondary battery or a primary battery, or a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited thereto. The battery cell may be flat, rectangular, or in other shapes.

[0072] Exemplarily, in the battery device 101, the heat exchange component 30 can be arranged between multiple battery cell assemblies and the bottom plate of the battery frame 10, or between the battery frame 10 and the guard plate assembly 20, or between the battery cell assembly and the cover plate, or between two adjacent battery cells, to provide heat exchange for multiple battery cell assemblies.

[0073] Figure 4 is a schematic diagram of the cooperation between the connecting member 3 and the second plate 2 according to an embodiment of the present application, Figure 5 : is a schematic diagram of the arrangement of the connector 3 according to an embodiment of the present application. The guard plate assembly 20 includes a first plate body 1, a second plate body 2 and a connector 3, the first plate body 1 is connected to the bottom of the battery frame 10, the second plate body 2 is connected to the side of the first plate body 1 away from the battery frame 10, the connector 3 is used to connect the first plate body 1 and the second plate body 2, the connector 3 includes a first connector 31 and a second connector 32, the first connector 31 is connected to the first plate body 1, the second connector 32 is connected to the second plate body 2, and the first connector 31 and the second connector 32 are detachably connected, so as to make the first plate body 1 and the second plate body 2 detachably connected.

[0074] The first connecting member 31 has a first connecting layer 312 on the side facing the second plate body 2, and the second connecting member 32 has a second connecting layer 322 on the side facing the first plate body 1. The first connecting layer 312 and the second connecting layer 322 are detachably connected, which not only makes the first plate body 1 and the second plate body 2 detachable, but also improves the bottom buffering and anti-bottom ball performance of the battery frame 10.

[0075] Figure 6 is a side view of a connector 3 according to some embodiments of the present application, Figure 7 yes Figure 6 The enlarged view of point A in the middle. Figure 8 is a side view of a connector 3 according to some other embodiments of the present application, Fig. 9 yes Figure 8 Enlarged view of point B in the middle.

[0076] According to the battery device 101 of the first aspect of the present application, Figure 2-Figure 4 , Figure 6-Figure 7 As shown, the battery device 101 includes a battery cell assembly, a battery frame 10 and a guard plate assembly 20. The guard plate assembly 20 and the battery frame 10 are connected to construct a accommodating cavity 12, and the battery cell assembly is installed in the accommodating cavity 12; the guard plate assembly 20 includes a first plate body 1, a second plate body 2 and a connector 3, the first plate body 1 is connected to the battery frame 10, the second plate body 2 is located on the side of the first plate body 1 away from the battery cell assembly, the connector 3 is connected between the first plate body 1 and the second plate body 2, the connector 3 includes a first connecting layer 312 and a second connecting layer 322, the first connecting layer 312 is connected to the side of the first plate body 1 facing the second plate body 2, the second connecting layer 322 is connected to the side of the second plate body 2 facing the first plate body 1, and the first connecting layer 312 and the second connecting layer 322 are detachably connected.

[0077] Exemplarily, the battery device 101 includes a battery frame 10 and a guard plate assembly 20. The battery frame and the battery frame 10 are connected to construct a accommodating cavity 12. The battery cell assembly is located in the accommodating cavity 12. The guard plate assembly 20 is connected to the side of the battery frame 10 that is away from the battery cell assembly. Specifically, the guard plate assembly 20 can be connected to the bottom of the battery frame 10. The battery frame 10 can be a frame that penetrates in the up and down directions. The guard plate assembly 20 is connected to the bottom of the battery frame 10 to support the battery cell assembly. The guard plate assembly 20 can be a bottom guard plate assembly 20.

[0078] The guard plate assembly 20 includes a first plate body 1, a second plate body 2 and a connector 3, wherein the first plate body 1 is connected to the battery frame 10, the second plate body 2 is located on the side of the first plate body 1 away from the battery monomer assembly, and the connector 3 is connected between the first plate body 1 and the second plate body 2. For example, the first plate body 1 can be mounted on the battery frame 10 by screws. For another example, when the guard plate assembly 20 is connected to the bottom of the battery frame 10, the first plate body 1 is the bottom plate, the second plate body 2 is the bottom guard plate, and the connector 3 is used to connect the bottom plate and the bottom guard plate.

[0079] The connecting member 3 includes a first connecting layer 312 and a second connecting layer 322. The first connecting layer 312 is connected to the side of the first plate body 1 facing the second plate body 2. For example, the first connecting layer 312 can be adhered to the first plate body 1, or the first connecting layer 312 can be fixed to the first plate body 1 by screws. The second connecting layer 322 is connected to the side of the second plate body 2 facing the first plate body 1. For example, the second connecting layer 322 can be adhered to the second plate body 2, or the second connecting layer 322 can be fixed to the second plate body 2 by screws.

[0080] The first connection layer 312 and the second connection layer 322 are detachably connected, so that the first plate body 1 and the second plate body 2 are connected. When the first plate body 1 and the second plate body 2 need to be disassembled, the first connection layer 312 and the second connection layer 322 can be separated, so that the first plate body 1 and the second plate body 2 are separated; when the second plate body 2 needs to be repaired or replaced, the second plate body 2 can be removed from the first plate body 1, which can facilitate the repair or replacement of the second plate body 2. When the first connection layer 312 and the second connection layer 312 are connected, a large area connection between the first plate body 1 and the second plate body 2 can be made, which is used to increase the strength and stability of the connection between the first plate body 1 and the second plate body 2, so that the guard plate assembly 20 can withstand a certain vibration impact, thereby eliminating the risk of abnormal noise and improving the main frequency of the Pack.

[0081] For example, when the guard plate assembly 20 is connected to the bottom of the battery frame 10, the first connection layer 312 and the second connection layer 322 can be used to absorb the impact force from the bottom, have a good buffering effect, and can improve the performance of anti-bottom ball.

[0082] In a specific example, the connecting member 3 may be Velcro, the first connecting layer 312 may be a bristle layer, and the second connecting layer 322 may be a round fleece layer, and the first plate 1 and the second plate 2 may be detachably connected by connecting the bristle layer and the round fleece layer. Alternatively, the connecting member 3 may be a magnetic member, the first connecting layer 312 may be a first magnetic body, and the second connecting layer 322 may be a second magnetic body, and the first plate 1 and the second plate 2 may be detachably connected by magnetic connection between the first magnetic body and the second magnetic body. Furthermore, in order to increase the connection strength between the first plate 1 and the second plate 2, screws and screw holes may be provided on the circumference of the first plate 1 and the second plate 2 to further connect the first plate 1 and the second plate 2.

[0083] According to the battery device 101 of the present application, the detachable connection between the first connecting layer 312 and the second connecting layer 322 can be realized, so that the first plate body 1 and the second plate body 2 can be detachably connected, and a large-area connection between the first plate body 1 and the second plate body 2 can be realized, which is used to increase the strength and stability of the connection between the first plate body 1 and the second plate body 2, so that the guard plate assembly 20 can withstand a certain vibration impact, thereby eliminating the risk of abnormal noise and improving the main frequency of the Pack.

[0084] In some embodiments, Figure 6-Figure 7 As shown, the first connection layer 312 and the second connection layer 322 are bonded and fixed.

[0085] Exemplarily, the first connecting layer 312 and the second connecting layer 322 are both adhesive layers, and the first connecting layer 312 and the second connecting layer 322 can be softened by a specific solvent or by heating to separate the first plate body 1 and the second plate body 2 .

[0086] The connecting member 3 may be Velcro, the first connecting layer 312 may be a bristle layer, and the second connecting layer 322 may be a round bristle layer. Through the adhesive connection between the bristle layer and the round bristle layer, the first plate body 1 and the second plate body 2 may be detachably connected. Alternatively, the connecting member 3 may be a magnetic member, the first connecting layer 312 may be a first magnetic body, and the second connecting layer 322 may be a second magnetic body. Through the magnetic connection between the first magnetic body and the second magnetic body, the first plate body 1 and the second plate body 2 may be detachably connected. After the first connecting layer 312 and the second connecting layer 322 are disassembled, the first connecting layer 312 and the second connecting layer 322 may be connected again, and the connecting member 3 may be reused.

[0087] In this embodiment, the first connection layer 312 and the second connection layer 322 are bonded and connected to each other, so that the connection method of the first plate body 1 and the second plate body 2 can be simple and easy to operate.

[0088] In some embodiments, Figure 6-Figure 7 As shown, the connecting member 3 includes a first connecting member 31 and a second connecting member 32. The first connecting member 31 includes a first fixing layer 311 and a first connecting layer 312. The first fixing layer 311 is connected between the first plate body 1 and the first connecting layer 312. The second connecting member 32 includes a second fixing layer 321 and a second connecting layer 322. The second fixing layer 321 is connected between the second plate body 2 and the second connecting layer 322.

[0089] Exemplarily, the first connecting member 31 is connected to the first plate body 1 through the first fixing layer 311, and the first fixing layer 311 can play the role of fixing the first connecting member 31. For example, the first fixing layer 311 is a glue layer, and the first connecting member 31 is glued to the first plate body 1 through the first fixing layer 311. For another example, the first fixing layer 311 includes a first glue surface and a second glue surface that are arranged opposite to each other, the first fixing layer 311 is connected to the first plate body 1 through the first glue surface, and the first fixing layer 311 is connected to the first connecting layer 312 through the second glue surface, thereby realizing the connection between the first connecting layer 312 and the first plate body 1. For another example, the first fixing layer 311 has a second glue surface on one side facing the first connecting layer 312, the first fixing layer 311 is connected to the first connecting layer 312 through the second glue surface, the first fixing layer 311 has a screw on one side facing the first plate body 1, and the first plate body 1 has a screw hole, and the first connecting member 31 and the first plate body 1 can be connected by fixing the screw in the screw hole.

[0090] The thickness of the first fixing layer 311 can be smaller than that of the first connecting layer 312. The first fixing layer 311 only plays a fixing role and does not need to occupy too much space between the first plate body 1 and the second plate body 2. The first connecting layer 312 is thicker, which can make the first connecting layer 312 better connected to the second connecting layer 322.

[0091] The second connecting member 32 is connected to the second plate body 2 through the second fixing layer 321. For example, the second fixing layer 321 is a glue layer, and the second connecting member 32 is glued to the first plate body 1 through the second fixing layer 321. For another example, the second fixing layer 321 includes a third glue surface and a fourth glue surface that are arranged opposite to each other. The second fixing layer 321 is connected to the second plate body 2 through the third glue surface, and the second fixing layer 321 is connected to the second connecting layer 322 through the fourth glue surface, thereby realizing the connection between the second connecting layer 322 and the second plate body 2. For another example, the second fixing layer 321 has a fourth glue surface on one side facing the second connecting layer 322, and the second fixing layer 321 is connected to the second connecting layer 322 through the fourth glue surface; the second fixing layer 321 has a screw on one side facing the second plate body 2, and the second plate body 2 has a screw hole. The second connecting member 32 and the second plate body 2 can be connected by fixing the screw in the screw hole.

[0092] The thickness of the second fixing layer 321 can be smaller than that of the second connecting layer 322. The second fixing layer 321 only plays a fixing role and does not need to occupy too much space between the first plate body 1 and the second plate body 2. The second connecting layer 322 is thicker, which can make the first connecting layer 312 better connected to the second connecting layer 322.

[0093] In this embodiment, the first connection layer 312 is fixedly connected to the first board body 1 by providing the first fixing layer 311 ; and the second connection layer 322 is fixedly connected to the second board body 2 by providing the second fixing layer 321 .

[0094] In some embodiments, Figure 6-Figure 7 As shown, the first connecting member 31 further includes a first substrate layer 313 , which is located between the first fixing layer 311 and the first connecting layer 312 ; the second connecting member 32 further includes a second substrate layer 323 , which is located between the second fixing layer 321 and the second connecting layer 322 .

[0095] For example, the first substrate layer 313 has good softness and wear resistance, can withstand a certain tension and pressure, and can further increase the tension and pressure on the guard plate assembly 20. When the first plate body 1 and the second plate body 2 are connected, the first substrate layer 313 can be squeezed, and the reaction force of the first substrate layer 313 on the first plate body 1 and the second plate body 2 is used to buffer the impact force on the guard plate assembly 20.

[0096] For example, the first fixing layer 311 is a glue layer, and the first base material layer 313 is glued to the first plate body 1 through the first fixing layer 311. For another example, the first fixing layer 311 includes a first glue surface and a second glue surface that are arranged opposite to each other, the first fixing layer 311 is connected to the first plate body 1 through the first glue surface, the first fixing layer 311 is connected to the first base material layer 313 through the second glue surface, the first base material layer 313 is provided with a fifth glue surface on the side facing the first connecting layer 312, and the first base material layer 313 is connected to the first connecting layer 312 through the fifth glue surface.

[0097] The thickness of the first substrate layer 313 is less than that of the first connecting layer 312. The first substrate layer 313 can withstand tension and pressure without excessively occupying the space between the first plate body 1 and the second plate body 2. The first connecting layer 312 is thicker, so that the first connecting layer 312 can be better connected to the second connecting layer 322.

[0098] The second substrate layer 323 has good softness and wear resistance, and can withstand a certain amount of tension and pressure, which can further increase the tension and pressure on the guard plate assembly 20. When the first plate body 1 and the second plate body 2 are connected, the second substrate layer 323 can be squeezed, and at the same time, the second substrate layer 323 has a reaction force on the first plate body 1 and the second plate body 2, which is used to buffer the impact force on the guard plate assembly 20.

[0099] For example, the second fixing layer 321 is a glue coating layer, and the second base material layer 323 is glued to the first plate body 1 through the second fixing layer 321. For another example, the second fixing layer 321 includes a third glue coating surface and a fourth glue coating surface that are arranged opposite to each other, the second fixing layer 321 is connected to the second plate body 2 through the third glue coating surface, the second fixing layer 321 is connected to the second base material layer 323 through the second glue coating surface, and the second base material layer 323 is provided with a sixth glue coating surface on one side of the second connecting layer 322, and the second base material layer 323 is connected to the second connecting layer 322 through the sixth glue coating surface.

[0100] The thickness of the second substrate layer 323 is less than that of the second connecting layer 322. The second substrate layer 323 can withstand tension and pressure without occupying too much space between the first plate body 1 and the second plate body 2. The second connecting layer 322 is thicker, so that the second connecting layer 322 can be better connected to the first connecting layer 312.

[0101] In this embodiment, a first substrate layer 313 and a second substrate layer 323 are provided. The first substrate layer 313 and the second substrate layer 323 have good softness and wear resistance and can withstand a certain tension and pressure, so as to further increase the tension and pressure resistance of the guard plate assembly 20.

[0102] In some embodiments, Figure 6-Figure 7 As shown, the first fixed layer 311 includes a first glue-coated surface and a second glue-coated surface that are relatively arranged, the first glue-coated surface is connected to the first plate body 1, and the second glue-coated surface is connected to the first substrate layer 313; and / or, the second fixed layer 321 includes a third glue-coated surface and a fourth glue-coated surface that are relatively arranged, the third glue-coated surface is connected to the second plate body 2, and the fourth glue-coated surface is connected to the second substrate layer 323.

[0103] In this embodiment, the first fixed layer 311 is connected to the first plate body 1 through the first glue coating surface, and the first fixed layer 311 is connected to the first substrate layer 313 through the second glue coating surface, which can make the connection method of the first fixed layer 311 to the first plate body 1 and the first substrate layer 313 simple and low in cost; the second fixed layer 321 is connected to the second plate body 2 through the third glue coating surface, and the second fixed layer 321 is connected to the second substrate layer 323 through the fourth glue coating surface, which can make the connection method of the second fixed layer 321 to the second plate body 2 and the second substrate layer 323 simple and low in cost.

[0104] In some embodiments, Figure 6-Figure 7 As shown, the first substrate layer 313 and / or the second substrate layer 323 are an integrally formed part.

[0105] Exemplarily, the first substrate layer 313 and / or the second substrate layer 323 may be an integrally formed plastic part; or, the first substrate layer 313 and / or the second substrate layer 323 may be an integrally formed elastic part; or, the first substrate layer 313 and / or the second substrate layer 323 may be an integrally formed rubber part; both of which can make the first substrate layer 313 and the second substrate layer 323 have a good buffering effect, good corrosion resistance, and low cost, thereby making the connector 3 have a good buffering effect. For example, the first substrate layer 313 and / or the second substrate layer 323 are made of one of materials such as rubber, felt, cotton wool, sponge, metal spring, nylon or polyester fiber.

[0106] In this embodiment, by setting the first substrate layer 313 and / or the second substrate layer 323 as an integrally formed part, the first substrate layer 313 and the second substrate layer 323 can have a good buffering effect, good corrosion resistance and low cost, thereby making the connector 3 have a good buffering effect.

[0107] In some embodiments, Figure 6-Figure 7 As shown, the connecting member 3 includes Velcro, and one of the first connecting layer 312 and the second connecting layer 322 is a bristle layer, and the other is a round bristle layer.

[0108] Exemplarily, the first connecting layer 312 is a bristle layer, and the second connecting layer 322 is a round bristle layer; or, the first connecting layer 312 is a round bristle layer, and the second connecting layer 322 is a bristle layer; when the second connecting layer 322 approaches the first connecting layer 312, and under the extrusion of the first plate body 1 and the second plate body 2, the round bristles in the round bristle layer extend into the bristles of the bristle layer, so that the first connecting layer 312 and the second connecting layer 322 are connected, and then the first plate body 1 and the second plate body 2 are connected.

[0109] The connecting member 3 includes a first connecting layer 312 and a second connecting layer 322. The first connecting layer 312 is connected to the first plate body 1, and the second connecting layer 322 is connected to the second plate body 2. The first connecting layer 312 has a plurality of hooks and loops, and the second connecting layer 322 has a plurality of soft fiber loops, or the second connecting layer 322 has a plurality of hooks and loops, and the first connecting layer 312 has a plurality of soft fiber loops. When the first connecting layer 312 and the second connecting layer 322 are pressed together, the hooks and loops will hook the fiber loops to form a tight combination; when a certain pulling force is applied, the hooks and loops can be easily separated from the fiber loops.

[0110] Using Velcro as the connecting member 3 makes the installation and disassembly between the first plate body 1 and the second plate body 2 more convenient and quick, and the operation can be completed without using tools; the Velcro can provide sufficient fixing force, thereby improving the connection strength between the first plate body 1 and the second plate body 2; the connection position between the first plate body 1 and the second plate body 2 can also be adjusted as needed, thereby improving the practicality of the connecting member 3.

[0111] In this embodiment, the connecting piece 3 includes Velcro, so that the installation and disassembly between the first plate body 1 and the second plate body 2 are faster and can be completed without using tools. The Velcro can provide sufficient fixing force to improve the connection strength between the first plate body 1 and the second plate body 2. The connection position between the first plate body 1 and the second plate body 2 can also be adjusted as needed, which can improve the practicality of the connecting piece 3.

[0112] In some embodiments, Figure 2-Figure 5 , Figure 8-Figure 9 As shown, the connector 3 further includes at least one third connector 33. When there is one third connector 33, the third connector 33 is detachably connected between the first connector layer 312 and the second connector layer 322. When there are multiple third connectors 33, the multiple third connectors 33 are all located between the first connector layer 312 and the second connector layer 322. Two adjacent third connectors 33 are detachably connected. The third connector 33 close to the first connector layer 312 is detachably connected to the first connector layer 312, and the third connector 33 close to the second connector layer 322 is detachably connected to the second connector layer 322.

[0113] Exemplarily, the third connecting member 33 is detachably connected between the first connecting layer 312 and the second connecting layer 322 , thereby increasing the thickness of the connecting member 3 , which can increase the thickness of the guard plate assembly 20 , and is used to further enhance the buffering capacity of the guard plate assembly 20 .

[0114] When there is one third connection member 33, the third connection member 33 is detachably connected between the first connection layer 312 and the second connection layer 322, and the third connection member 33 can be removed from between the first connection layer 312 and the second connection layer 322. When there are multiple third connection members 33, two adjacent third connection members 33 are detachably connected, and multiple third connection members 33 are detachably connected between the first connection layer 312 and the second connection layer 322, and each third connection member 33 can be removed from between the first connection layer 312 and the second connection layer 322.

[0115] For example, the connection member 3 may include one, two or three third connection members 33 .

[0116] For example, when the guard plate assembly 20 is connected to the bottom of the battery frame 10, the third connecting member 33 can further improve the bottom buffering performance and the anti-bottom ball performance.

[0117] In this embodiment, at least one third connecting member 33 is provided between the first connecting layer 312 and the second connecting layer 322 , and the third connecting member 33 can be detachably connected to the second connecting layer 322 and the second connecting layer 322 , so as to further enhance the buffering capacity of the guard plate assembly 20 .

[0118] In some embodiments, Figure 8-Figure 9 As shown, each third connection member 33 includes a third connection layer 331 and a fourth connection layer 332 that are arranged opposite to each other. When there is only one third connection member 33, the third connection layer 331 is detachably connected to the first connection layer 312, and the fourth connection layer 332 is detachably connected to the second connection layer 322.

[0119] When there are multiple third connecting members 33, among two adjacent third connecting members 33, the third connecting layer 331 of one third connecting member 33 is detachably connected to the fourth connecting layer 332 of the other third connecting member 33, and the third connecting layer 331 close to the first connecting layer 312 is detachably connected to the first connecting layer 312, and the fourth connecting layer 332 close to the second connecting layer 322 is detachably connected to the second connecting layer 322.

[0120] In this embodiment, by arranging the connection mode between the first connection layer 312 and the third connection layer 331 to be the same as the connection mode between the second connection layer 322 and the fourth connection layer 332 , the arrangement mode of the connector 3 can be simplified and the processing cost can be low.

[0121] In some embodiments, Figure 8-Figure 9 As shown, the third connecting member 33 further includes: a third substrate layer 333 , and the third substrate layer 333 is located between the third connecting layer 331 and the fourth connecting layer 332 .

[0122] Exemplarily, the third substrate layer 333 has good softness and wear resistance, can withstand a certain tension and pressure, and can further increase the tension and pressure on the guard plate assembly 20. When the first plate body 1 and the second plate body 2 are connected, the third substrate layer 333 can also be squeezed, and the third substrate layer 333 has a reaction force acting on the first plate body 1 and the second plate body 2, which is used to buffer the impact force on the guard plate assembly 20. The third substrate layer 333 can also play a role in fixing the third connecting layer 331 and the fourth connecting layer 332.

[0123] For example, the third substrate layer 333 includes a seventh adhesive surface and an eighth adhesive surface that are oppositely disposed. The third substrate layer 333 is connected to the third connection layer 331 via the seventh adhesive surface, and the third substrate layer 333 is connected to the fourth connection layer 332 via the eighth adhesive surface.

[0124] In this embodiment, a third substrate layer 333 is provided. The third substrate layer 333 has good softness and wear resistance and can withstand a certain tension and pressure, thereby further increasing the tension and pressure that the guard plate assembly 20 can withstand.

[0125] In some embodiments, Figure 8-Figure 9 As shown, the third substrate layer 333 is an integrally formed part.

[0126] Exemplarily, the third substrate layer 333 may be an integrally molded plastic part; or, the third substrate layer 333 may be an integrally molded elastic part; or, the third substrate layer 333 may be an integrally molded rubber part, both of which can make the third substrate layer 333 have a good buffering effect, good corrosion resistance, and low cost, thereby making the connector 3 have a good buffering effect.

[0127] For example, the third base material layer 333 is made of one of materials such as rubber, felt, cotton wool, sponge, metal spring, nylon or polyester fiber.

[0128] In this embodiment, by setting the third substrate layer 333 as an integrally formed part, the third substrate layer 333 can have a good buffering effect, good corrosion resistance and low cost, thereby making the connector 3 have a good buffering effect.

[0129] In some embodiments, Figure 8-Figure 9 As shown, the connecting member 3 includes Velcro, the first connecting layer 312 and the fourth connecting layer 332 are both bristle layers, and the second connecting layer 322 and the third connecting layer 331 are both round bristle layers; or, the first connecting layer 312 and the fourth connecting layer 332 are both round bristle layers, and the second connecting layer 322 and the third connecting layer 331 are both bristle layers.

[0130] Exemplarily, the bristle layer has a plurality of hooks and loops, the round hair layer has a plurality of soft fiber loops, the first connecting layer 312 and the fourth connecting layer 332 have a plurality of hooks and loops, the second connecting layer 322 and the third connecting layer 331 have a plurality of soft fiber loops, or the second connecting layer 322 and the third connecting layer 331 have a plurality of hooks and loops, the first connecting layer 312 and the fourth connecting layer 332 have a plurality of soft fiber loops. When the first connecting layer 312 and the third connecting layer 331 and the fourth connecting layer 332 and the second connecting layer 322 are pressed together, the hooks and loops will hook the fiber loops, thereby forming a tight combination; when a certain pulling force is applied, the hooks and loops can be easily separated from the fiber loops.

[0131] Using Velcro as the connecting member 3 makes the installation and disassembly between the first plate body 1 and the second plate body 2 more convenient and quick, and the operation can be completed without using tools; the Velcro can provide sufficient fixing force, thereby improving the connection strength between the first plate body 1 and the second plate body 2; the connection position between the first plate body 1 and the second plate body 2 can also be adjusted as needed, thereby improving the practicality of the connecting member 3.

[0132] In this embodiment, the connecting piece 3 includes Velcro, so that the installation and disassembly between the first plate body 1 and the second plate body 2 are faster and can be completed without using tools. The Velcro can provide sufficient fixing force to improve the connection strength between the first plate body 1 and the second plate body 2. The connection position between the first plate body 1 and the second plate body 2 can also be adjusted as needed, which can improve the practicality of the connecting piece 3.

[0133] In some embodiments, Figure 2-Figure 5 As shown, a first mounting portion is provided on the first plate body 1 and / or the second plate body 2, and a portion of the first mounting portion extends between the first plate body 1 and the second plate body 2, and the connecting member 3 has a first avoidance area for avoiding the first mounting portion, or a second mounting portion is provided on the first plate body 1 and / or the second plate body 2, and the battery device 101 also includes a beam body 11, and the beam body 11 is installed in the accommodating cavity 12, and the second mounting portion is connected to the beam body 11, and in the projection plane perpendicular to the thickness direction of the first plate body 1, the connecting member 3 has a second avoidance area 34 for avoiding the beam body 11.

[0134] Exemplarily, the first plate body 1 is provided with a first mounting portion, and a portion of the first mounting portion extends between the first plate body 1 and the second plate body 2, and the first plate body 1 can be mounted on the electrical device through the first mounting portion; or, the first plate body 1 and the second plate body 2 are both provided with a first mounting portion, and the guard plate assembly 20 can be mounted on the electrical device through the first mounting portion. For example, the first mounting portion includes a first connection hole provided on the first plate body 1 and a second mounting hole 21 provided on the first plate body 1, and screws are used to penetrate the first connection hole and the second connection hole to mount the battery device 101 on the electrical device.

[0135] Reference Figure 2-Figure 5 In a specific embodiment, a second mounting portion is provided on the first plate body 1 and / or the second plate body 2, and a portion of the second mounting portion extends between the first plate body 1 and the second plate body 2. The second mounting portion includes a first mounting hole 111 provided on the first plate body 1 and a second mounting hole 21 provided on the first plate body 1. The beam body 11 has a third mounting hole connected to both the first mounting hole 111 and the second mounting hole 21. The fastener 13 is passed through the third mounting hole, the first mounting hole 111 and the second mounting hole 21, so that the battery device 101 can be fixed to the electrical device.

[0136] In the projection plane perpendicular to the thickness direction of the first plate body 1, the connector 3 has a second avoidance area 34 for avoiding the beam body 11, which can prevent the fastener 13 from passing through the connector 3, and the battery device 101 will not be hindered by the existence of the connector 3 during installation; at the same time, the second avoidance area 34 is arranged opposite to the beam body 11, and no battery cell assembly is arranged on the beam body 11, so the connector 3 does not need to be arranged in the second avoidance area 34, which can reduce the amount of the connector 3 used, thereby reducing the cost of the connector 3.

[0137] In this embodiment, the connector 3 has a second avoidance area 34 for avoiding the beam body 11 in a projection plane perpendicular to the thickness direction of the first plate body 1. The battery device 101 is fixed to the electrical device through the beam body 11 and the second mounting portion. The second avoidance area 34 is arranged opposite to the beam body 11, which can prevent the fastener 13 from passing through the connector 3 and can also reduce the amount of the connector 3 used, thereby reducing the cost of the connector 3.

[0138] In some embodiments, Figure 2-Figure 5 As shown, there are multiple connectors 3, which are spaced apart from each other. An electrical component is also provided in the accommodating cavity 12, which is spaced apart from the battery cell assembly. At least one connector 3 is arranged opposite to the battery cell assembly, and at least one connector 3 is arranged opposite to the electrical component.

[0139] Illustratively, the layout of multiple connectors 3 spaced apart increases the flexibility of the arrangement of the multiple connectors 3, so that the battery device 101 can more easily adapt to different installation environments and conditions. When one of the connectors 3 needs to be replaced or repaired, the spaced arrangement also facilitates targeted operations without having to remove all the connectors 3.

[0140] At least one connector 3 is arranged relative to the battery monomer assembly, which may be one connector 3 arranged relative to the battery monomer assembly, or multiple connectors 3 spaced apart from each other are arranged relative to the battery monomer assembly. The connector 3 can absorb external impact force, thereby protecting the battery monomer assembly. The battery monomer assembly includes multiple battery modules, which are spaced apart by a beam 11. The beam 11 is provided with mounting holes for mounting the battery frame 10 on an electrical device. The connectors 3 are arranged one by one with the battery modules. The connectors 3 can not only be used to protect the battery monomer assembly, but also avoid the second mounting portion of the battery device 101.

[0141] For example, the battery cell assembly includes two battery modules, and two connectors 3 are arranged between the first plate body 1 and the second plate body 2, one connector 3 is arranged opposite to one battery module, and the other connector 3 is arranged opposite to the other battery module.

[0142] The electrical component is responsible for monitoring the status of the battery device 101, including parameters such as voltage, current, and temperature, and performs charge and discharge control based on the above information to prevent problems such as overcharging, overdischarging, and overheating, and ensure the safe and efficient use of the battery device 101. At least one connector 3 is arranged opposite to the electrical component, and it can be one connector 3 arranged opposite to the electrical component, or it can be multiple connectors 3 arranged opposite to the electrical component at intervals. The connector 3 can absorb external impact force, thereby protecting the electrical component.

[0143] For example, two connecting members 3 are further arranged between the first plate body 1 and the second plate body 2 , and the two connecting members 3 are arranged opposite to the electrical components.

[0144] In this embodiment, at least one connector 3 is disposed opposite to the battery cell assembly, and at least one connector 3 is disposed opposite to the electrical component. The connector 3 is used to absorb external impact force and to protect the battery cell assembly and the electrical component.

[0145] In some embodiments, Figure 2-Figure 8 As shown, in the direction perpendicular to the thickness of the first plate body 1 , the area of ​​the projection surface of the connecting member 3 is A, and the area of ​​the projection surface of the first plate body 1 is B, satisfying: 0.3≤A / B≤0.9.

[0146] Exemplarily, the relationship between the area of ​​the projection surface of the connecting member 3 and the area of ​​the projection surface of the first plate body 1 satisfies the above range. The connecting member 3 can not only improve the connection strength between the first plate body 1 and the second plate body 2, but also improve the ability of the guard plate assembly 20 to withstand vibration and impact without occupying too much space between the first plate body 1 and the second plate body 2.

[0147] For example, the area of ​​the projection surface of the connecting member 3 may account for 0.3, 0.5, 0.7 or 0.9 of the area of ​​the projection surface of the first plate body 1 .

[0148] In a specific example, in a direction perpendicular to the thickness of the first plate 1, the area of ​​the projection surface of the connector 3 is A, and the area of ​​the projection surface of the battery cell assembly is C, satisfying: A / C ≥ 1 / 4. The area of ​​the projection surface of the connector 3 may account for 0.25, 0.5, 0.7 or 1 of the area of ​​the projection surface of the battery cell assembly.

[0149] In this embodiment, the above formula is satisfied by setting the connection between the connecting member 3 and the first plate body 1. The connecting member 3 can not only improve the connection strength between the first plate body 1 and the second plate body 2, but also improve the ability of the guard plate assembly 20 to withstand vibration impact without occupying too much space between the first plate body 1 and the second plate body 2.

[0150] In some embodiments, Figure 2-Figure 4As shown, the first plate body 1 is a steel plate or an aluminum plate; and / or, the second plate body 2 is a steel plate or an aluminum plate.

[0151] Exemplarily, the first plate 1 is a steel plate or an aluminum plate, and the second plate 2 is a steel plate or an aluminum plate. The steel plate or the aluminum plate has high strength and rigidity, and can provide a solid structural support for the battery device 101, which helps to protect the internal battery cell components from external physical damage. Steel plates and aluminum plates are more wear-resistant and corrosion-resistant, and have good fire resistance. Steel plates and aluminum plates can also provide a certain degree of electromagnetic shielding effect, which helps to reduce the impact of external electromagnetic interference on the battery management system (BMS) and other electronic components; steel plates and aluminum plates can be processed in a variety of ways, such as cutting, stamping, welding, etc., which is convenient for manufacturing a first plate 1 with a complex shape and structure to meet different design requirements.

[0152] In this embodiment, the first plate body 1 is made of a steel plate or an aluminum plate, and the second plate body 2 is made of a steel plate or an aluminum plate. Both the steel plate and the aluminum plate have high strength and rigidity and can better support the battery cell assembly. The steel plate can be processed in a variety of ways to meet different design requirements.

[0153] In some embodiments, Figure 2 As shown, the second plate 2 is detachably mounted on the bottom of the battery frame 10 .

[0154] Exemplarily, the first plate body 1 can be welded or screwed to the bottom of the battery frame 10, and the second plate body 2 can be detachably mounted to the bottom of the battery frame 10, for example, the second plate body 2 is screwed to the bottom of the battery frame 10. A mounting cavity 22 is formed on the side of the second plate body 2 facing the battery frame 10, and the first plate body 1 and the connector 3 can both be located in the mounting cavity 22 to support the battery cell assembly. The guard plate assembly 20 can be a bottom guard plate assembly, the first plate body 1 is a bottom plate, and the second plate body 2 is a bottom guard plate.

[0155] When the first connecting layer 312 and the first connecting layer 312 are connected, the first plate body 1 and the second plate body 2 can be connected. The first connecting layer 312 and the second connecting layer 322 can be used to absorb the impact force from the bottom and have a good buffering effect, so that the guard plate assembly 20 can withstand a certain vibration impact, improve the performance of anti-bottom ball, eliminate the risk of abnormal noise, and improve the main frequency of the Pack.

[0156] In this embodiment, the second plate body 2 is detachably installed on the bottom of the battery frame 10. The connecting member 3 can absorb the impact force from the bottom and has a good buffering effect, so that the guard plate assembly 20 can withstand a certain vibration impact, improve the performance of the guard plate assembly 20 against bottom balls, eliminate the risk of abnormal noise, and improve the main frequency of the Pack.

[0157] In some embodiments, Figure 2-Figure 8 As shown, the battery device 101 further includes: a heat exchanger 30, which is located between the first plate body 1 and the second plate body 2, and has a receiving space that penetrates in the up-down direction, and the connector 3 is arranged in the receiving space.

[0158] Exemplarily, the heat exchanger 30 has various shapes, such as a "U"-shaped tube, a "return"-shaped tube, etc. The heat exchanger 30 itself can form a receiving space, and the connector 3 is arranged in the receiving space. The connector 3 can be used to fill the receiving space. At the same time, the first plate body 1 and the second plate body 2 can be detachably connected to improve the impact resistance of the guard plate assembly 20.

[0159] In this embodiment, the heat exchanger 30 is located between the first plate body 1 and the second plate body 2. The heat exchanger 30 has a accommodating space that penetrates in the up and down directions. The connecting member 3 is arranged in the accommodating space. The connecting member 3 can be used to fill the accommodating space. At the same time, the first plate body 1 and the second plate body 2 can be detachably connected, and the impact resistance of the guard plate assembly 20 can also be improved.

[0160] The electrical device according to the second aspect of the present application includes: the battery device 101 according to the first aspect of the present application.

[0161] According to the electric device of the present application, since the performance of the battery device 101 is improved, it is helpful to improve the working power performance of the electric device.

[0162] The following will refer to Figure 2-Figure 9 A battery device 101 according to a specific example of implementation of the present application is described.

[0163] Specifically, the battery device 101 includes a battery frame 10 and a guard plate assembly 20. The guard plate assembly 20 and the battery frame 10 are connected to construct a accommodating cavity 12. The battery cell assembly and electrical components are installed in the accommodating cavity 12, and the battery cell assembly and electrical components are arranged separately. The guard plate assembly 20 is installed at the bottom of the battery frame 10, and the guard plate assembly 20 is a bottom guard plate assembly.

[0164] The guard plate assembly 20 includes a first plate body 1, a second plate body 2 and a connecting member 3. The first plate body 1 is a steel plate, the first plate body 1 is connected to the battery frame 10, the second plate body 2 is located on the side of the first plate body 1 away from the battery cell assembly, the connecting member 3 is connected between the first plate body 1 and the second plate body 2, the first plate body 1 is a bottom plate, and the second plate body 2 is a bottom guard plate.

[0165] The connecting member 3 includes a first connecting member 31 and a second connecting member 32. The first connecting member 31 is connected to the side of the first plate body 1 facing the second plate body 2, and the second connecting member 32 is connected to the side of the second plate body 2 facing the first plate body 1. The first connecting member 31 includes a first fixing layer 311, a first substrate layer 313 and a first connecting layer 312. The opposite sides of the first fixing layer 311 respectively have a first glue-coated surface and a second glue-coated surface. The first fixing layer 311 is connected to the first plate body 1 through the first glue-coated surface, and the first fixing layer 311 is connected to the first substrate layer 313 through the second glue-coated surface. The other side of the first substrate layer 313 is connected to the first connecting layer 312.

[0166] The second connecting member 32 includes a second fixing layer 321, a second base material layer 323, and a second connecting layer 322. The second fixing layer 321 has a third adhesive surface and a fourth adhesive surface on two opposite sides thereof. The second fixing layer 321 is connected to the second plate body 2 via the third adhesive surface. The second fixing layer 321 is connected to the second base material layer 323 via the fourth adhesive surface. The other side of the second base material layer 323 is connected to the second connecting layer 322. The first connecting layer 312 is detachably connected to the second connecting layer 322.

[0167] The connector 3 further includes at least one third connector 33, and a plurality of third connectors 33 are detachably connected between the first connector layer 312 and the second connector layer 322, and each third connector 33 includes a third connector layer 331, a third substrate layer 333, and a fourth connector layer 332. When there is one third connector 33, the third connector layer 331 is detachably connected to the first connector layer 312, and the fourth connector layer 332 is detachably connected to the second connector layer 322; when there are a plurality of third connectors 33, the third connector layers 331 and the fourth connector layers 332 of two adjacent third connectors 33 are detachably connected, the third connector layer 331 close to the first connector layer 312 is detachably connected to the first connector layer 312, and the fourth connector layer 332 close to the second connector layer 322 is detachably connected to the second connector layer 322.

[0168] The connecting member 3 is a Velcro, the first connecting layer 312 and the fourth connecting layer 332 are both bristle layers, the second connecting layer 322 and the third connecting layer 331 are both round bristle layers; or the first connecting layer 312 and the fourth connecting layer 332 are both round bristle layers, the second connecting layer 322 and the third connecting layer 331 are both bristle layers. Under the extrusion of the first plate body 1 and the second plate body 2, the round bristles in the round bristle layer extend into the bristles of the bristle layer, so that the first connecting layer 312 and the third connecting layer 331 are connected, the second connecting layer 322 and the fourth connecting layer 332 are connected, and then the first plate body 1 and the second plate body 2 are connected.

[0169] There are multiple connectors 3, which are spaced apart from each other. Two connectors 3 are disposed opposite to the battery monomer assembly to avoid the second mounting portion of the battery device 101. The two connectors 3 are disposed opposite to the electrical component.

[0170] In the direction perpendicular to the thickness of the first plate body 1 , the area of ​​the projection surface of the connecting member 3 is A, and the area of ​​the projection surface of the first plate body 1 is B, satisfying: 0.3≤A / B≤0.9.

[0171] The battery device 101 also includes a heat exchanger 30, which is located between the first plate body 1 and the second plate body 2. The heat exchanger 30 has a accommodating space that penetrates in the up and down directions. The connector 3 is arranged in the accommodating space. The connector 3 can be used to fill the accommodating space. At the same time, the first plate body 1 and the second plate body 2 can be detachably connected to improve the anti-bottom ball performance of the guard plate assembly 20.

[0172] In the description of this specification, the description with reference to the terms "some embodiments", "optionally", "further" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0173] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A battery device (101), characterized in that: include: Battery cell assembly; Battery frame (10); A guard plate assembly (20), wherein the guard plate assembly (20) is connected to the battery frame (10) to construct a receiving cavity (12), wherein the battery cell assembly is installed in the receiving cavity (12), wherein the guard plate assembly (20) comprises a first plate body (1), a second plate body (2) and a connecting member (3), wherein the first plate body (1) is connected to the battery frame (10), and the second plate body (2) is located on a side of the first plate body (1) facing away from the battery cell assembly, wherein the connecting member (3) is connected between the first plate body (1) and the second plate body (2), wherein the connecting member (3) comprises a first connecting layer (312) and a second connecting layer (322), wherein the first connecting layer (312) is connected to a side of the first plate body (1) facing the second plate body (2), and the second connecting layer (322) is connected to a side of the second plate body (2) facing the first plate body (1), and the first connecting layer (312) and the second connecting layer (322) are detachably connected.

2. The battery device (101) according to claim 1, characterized in that: The first connecting layer (312) and the second connecting layer (322) are bonded together.

3. The battery device (101) according to claim 1, characterized in that: The connecting member (3) comprises a first connecting member (31) and a second connecting member (32), wherein the first connecting member (31) comprises a first fixing layer (311) and the first connecting layer (312), wherein the first fixing layer (311) is connected between the first plate body (1) and the first connecting layer (312), and the second connecting member (32) comprises a second fixing layer (321) and the second connecting layer (322), wherein the second fixing layer (321) is connected between the second plate body (2) and the second connecting layer (322).

4. The battery device (101) according to claim 3, characterized in that: The first connecting member (31) further comprises a first substrate layer (313), wherein the first substrate layer (313) is located between the first fixing layer (311) and the first connecting layer (312); the second connecting member (32) further comprises a second substrate layer (323), wherein the second substrate layer (323) is located between the second fixing layer (321) and the second connecting layer (322).

5. The battery device (101) according to claim 4, characterized in that: The first fixing layer (311) comprises a first glue-coated surface and a second glue-coated surface which are arranged opposite to each other, the first glue-coated surface is connected to the first plate body (1), and the second glue-coated surface is connected to the first substrate layer (313); and / or the second fixing layer (321) comprises a third glue-coated surface and a fourth glue-coated surface which are arranged opposite to each other, the third glue-coated surface is connected to the second plate body (2), and the fourth glue-coated surface is connected to the second substrate layer (323).

6. The battery device (101) according to claim 4, characterized in that: The first substrate layer (313) and / or the second substrate layer (323) are an integrally formed part.

7. The battery device (101) according to claim 1, characterized in that: The connecting member (3) comprises Velcro, and one of the first connecting layer (312) and the second connecting layer (322) is a bristle layer, and the other is a round bristle layer.

8. The battery device (101) according to claim 1, characterized in that: The connecting member (3) further comprises at least one third connecting member (33). When there is one third connecting member (33), the third connecting member (33) is detachably connected between the first connecting layer (312) and the second connecting layer (322); when there are multiple third connecting members (33), the multiple third connecting members (33) are all located between the first connecting layer (312) and the second connecting layer (322), and two adjacent third connecting members (33) are detachably connected. The third connecting member (33) close to the first connecting layer (312) is detachably connected to the first connecting layer (312), and the third connecting member (33) close to the second connecting layer (322) is detachably connected to the second connecting layer (322).

9. The battery device (101) according to claim 8, characterized in that: Each of the third connecting members (33) comprises a third connecting layer (331) and a fourth connecting layer (332) which are arranged opposite to each other. When there is only one third connecting member (33), the third connecting layer (331) is detachably connected to the first connecting layer (312), and the fourth connecting layer (332) is detachably connected to the second connecting layer (322); When there are multiple third connecting members (33), of two adjacent third connecting members (33), the third connecting layer (331) of one third connecting member (33) is detachably connected to the fourth connecting layer (332) of the other third connecting member (33), and the third connecting layer (331) close to the first connecting layer (312) is detachably connected to the first connecting layer (312), and the fourth connecting layer (332) close to the second connecting layer (322) is detachably connected to the second connecting layer (322).

10. The battery device (101) according to claim 9, characterized in that: The third connecting member (33) further comprises: a third substrate layer (333), wherein the third substrate layer (333) is located between the third connecting layer (331) and the fourth connecting layer (332).

11. The battery device (101) according to claim 10, characterized in that: The third substrate layer (333) is an integrally formed part.

12. The battery device (101) according to claim 9, characterized in that: The connecting piece (3) comprises Velcro, the first connecting layer (312) and the fourth connecting layer (332) are both bristle layers, and the second connecting layer (322) and the third connecting layer (331) are both round-hair layers; or, the first connecting layer (312) and the fourth connecting layer (332) are both round-hair layers, and the second connecting layer (322) and the third connecting layer (331) are both bristle layers.

13. The battery device (101) according to claim 1, characterized in that: A first mounting portion is provided on the first plate body (1) and / or the second plate body (2), a portion of the first mounting portion extends between the first plate body (1) and the second plate body (2), the connecting member (3) has a first avoidance area for avoiding the first mounting portion, or a second mounting portion is provided on the first plate body (1) and / or the second plate body (2), the battery device (101) further comprises a beam body (11), the beam body (11) is installed in the accommodating cavity (12), the second mounting portion is connected to the beam body (11), and in a projection plane perpendicular to the thickness direction of the first plate body (1), the connecting member (3) has a second avoidance area (34) for avoiding the beam body (11).

14. The battery device (101) according to claim 1, characterized in that: A plurality of the connecting members (3) are provided, and the plurality of the connecting members (3) are spaced apart from each other. An electrical component is also provided in the accommodating cavity (12), and the electrical component is spaced apart from the battery monomer assembly. At least one of the connecting members (3) is arranged opposite to the battery monomer assembly, and at least one of the connecting members (3) is arranged opposite to the electrical component.

15. The battery device (101) according to claim 1, characterized in that: In a direction perpendicular to the thickness of the first plate body (1), the area of ​​the projection surface of the connecting member (3) is A, and the area of ​​the projection surface of the first plate body (1) is B, satisfying: 0.3≤A / B≤0.

9.

16. The battery device (101) according to claim 1, characterized in that: The first plate body (1) is a steel plate or an aluminum plate; and / or the second plate body (2) is a steel plate or an aluminum plate.

17. The battery device (101) according to claim 1, characterized in that: The second plate (2) is detachably located at the bottom of the battery frame (10).

18. The battery device (101) according to claim 1, characterized in that: Also includes: A heat exchange component (30), the heat exchange component (30) is located between the first plate body (1) and the second plate body (2), the heat exchange component (30) has a receiving space penetrating in the up-down direction, and the connecting component (3) is arranged in the receiving space.

19. An electrical device, characterized in that: include: The battery device (101) according to any one of claims 1 to 18.

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