Battery tray, battery pack and electric equipment

Abstract

The utility model provides a battery tray, a battery pack and electric equipment, the battery tray comprises a frame, a bottom plate assembly, at least two gas packaging areas and at least two gas detection assemblies, and the bottom plate assembly is connected to the frame; the at least two gas packaging areas are arranged on the bottom plate assembly, gases packaged in the at least two gas packaging areas are different, and the projections of the at least two gas packaging areas in the height direction of the frame are mutually staggered; the at least two gas detection assemblies and the at least two gas packaging areas are correspondingly arranged, and the at least two gas detection assemblies are used for detecting at least two gases. The battery tray disclosed by the utility model is relatively high in safety performance.

Description

Technical Field

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

[0002] New energy vehicles can use battery packs as power sources. The battery packs are installed on the chassis of the vehicle. When the vehicle is driving on the road, the battery packs located at the bottom of the vehicle may hit obstacles, which may cause damage to the housing of the battery packs. If the damage cannot be detected and repaired in time, it may lead to damage to the battery cells, thereby causing abnormal performance of the entire vehicle.

[0003] In the related art, when the battery pack of a new energy vehicle is damaged at the bottom, it is necessary to disassemble the battery pack to determine whether there is damage and whether the battery needs to be replaced. Users can only confirm this by driving to a professional repair shop and cannot confirm it by themselves. At the same time, some users may not be aware of whether the battery pack is damaged, resulting in the vehicle being in an unsafe state during subsequent driving. Summary of the Utility Model

[0004] Based on this, the present application provides a battery tray, a battery pack, and an electrical device. The battery tray realizes damage monitoring of different positions of the bottom plate assembly by setting gas encapsulation areas at different positions of the bottom plate assembly, so that users can timely know the specific positions where the bottom plate assembly is damaged, thereby improving the safety performance of the battery tray.

[0005] In a first aspect, the present application provides a battery tray, including: a frame, a bottom plate assembly, at least two gas encapsulation areas, and at least two gas detection components. The bottom plate assembly is connected to the frame;

[0006] At least two gas encapsulation areas are arranged on the bottom plate assembly. The gases encapsulated in the at least two gas encapsulation areas are different, and the projections of the at least two gas encapsulation areas in the height direction of the frame are staggered from each other;

[0007] At least two gas detection components are correspondingly arranged with the at least two gas encapsulation areas, and the at least two gas detection components are used to detect at least two gases.

[0008] In a possible implementation manner, the battery tray of the present application further includes at least two first gas encapsulation members, and the at least two gas encapsulation areas are located in different first gas encapsulation members.

[0009] In a possible implementation manner, the battery tray of the present application further includes a second gas encapsulation member, and the at least two gas encapsulation areas are located in the same second gas encapsulation member.

[0010] In a possible implementation, the second gas encapsulation member includes an outer sealing edge and an inner sealing edge. The outer sealing edge surrounds the outer edge of the second gas encapsulation member, and the outer sealing edge and the inner sealing edge together divide the second gas encapsulation member into at least two gas encapsulation regions.

[0011] In a possible implementation, the second gas encapsulation member has two gas encapsulation regions. The outer sealing edge surrounds the outer peripheral side of the inner sealing edge. The inner sealing edge defines one gas encapsulation region, and another gas encapsulation region is defined between the inner sealing edge and the outer sealing edge.

[0012] In a possible implementation, two inner sealing edges are arranged in a staggered manner, and both ends of the extending direction of the inner sealing edge are connected to the outer sealing edge, so as to define four gas encapsulation regions in the second gas encapsulation member.

[0013] In a possible implementation, the bottom plate assembly includes a bottom plate and a guard plate. The bottom plate and the guard plate are arranged at intervals along the height direction of the battery tray, and at least one of the bottom plate and the guard plate is provided with a gas encapsulation region.

[0014] In a possible implementation, the gas encapsulation region is connected to the side of the bottom plate facing the guard plate, and / or the gas encapsulation region is connected to the side of the guard plate facing the bottom plate.

[0015] In a possible implementation, a transmission wire harness is further included. The transmission wire harness is electrically connected to the gas detection component, and the transmission wire harness is used to transmit the detection result of the gas detection component to the controller of the electrical device.

[0016] In a second aspect, the present application provides a battery pack, including a battery cell and the battery tray provided in the first aspect above. The battery tray is used to carry the battery cell.

[0017] In a third aspect, the present application provides an electrical device, including an electrical device and the battery pack provided in the second aspect above. The battery pack is used to supply power to the electrical device.

[0018] The present application provides a battery tray, a battery pack, and an electrical device. The battery tray includes a frame, a bottom plate assembly, a gas encapsulation region, and a gas detection component. By providing the frame to support the battery tray and connect the battery tray and the electrical device, by providing the bottom plate assembly to jointly carry the battery cell after being connected to the frame, by providing the gas encapsulation region to release gas when the bottom plate assembly is damaged, by providing the gas detection component to detect the gas released from the gas encapsulation region and feedback the detection result, and then issue a reminder, by providing at least two gas encapsulation regions to expand the coverage area of the gas encapsulation region on the bottom plate assembly, and then expand the detection range, and by enabling at least two gas encapsulation regions to encapsulate different gases, the damage position of the bottom plate assembly can be effectively identified, and then the detection accuracy can be improved. Thus, the battery tray of the present application has high safety, thereby improving the safety of the battery pack and the electrical device.

[0019] In addition to the technical problems solved by the embodiments of the present application described above, the technical features constituting the technical solutions, and the beneficial effects brought by the technical features of these technical solutions, other technical problems that can be solved by the battery tray, battery pack, and electrical equipment provided by the present application, other technical features included in the technical solutions, and the beneficial effects brought by these technical features will be further described in detail in the specific implementation manners. Description of the Drawings

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0021] Figure 1 Structural schematic diagram of the battery tray provided by the embodiment of the present application;

[0022] Figure 2 is Figure 1 schematic diagram from another angle of

[0023] Figure 3 Another structural schematic diagram of the battery tray provided by the embodiment of the present application;

[0024] Figure 4 is Figure 3 schematic diagram from another angle of

[0025] Figure 5 Structural schematic diagram of the first gas encapsulation member in the battery tray provided by the embodiment of the present application;

[0026] Figure 6 Structural schematic diagram of the second gas encapsulation member in the battery tray provided by the embodiment of the present application;

[0027] Figure 7 Another structural schematic diagram of the second gas encapsulation member in the battery tray provided by the embodiment of the present application;

[0028] Figure 8 Another structural schematic diagram of the second gas encapsulation member in the battery tray provided by the embodiment of the present application.

[0029] Description of the reference numerals:

[0030] 100 - Frame; 200 - Bottom plate assembly; 210 - Bottom plate; 220 - Guard plate; 300 - Gas encapsulation area; 400 - Gas detection component; 500 - First gas encapsulation member; 600 - Second gas encapsulation member; 610 - Outer sealing edge; 620 - Inner sealing edge. Detailed implementation manners

[0031] To make the objectives, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below with reference to the accompanying drawings in the preferred embodiments of the present application. In the drawings, the same or similar reference numerals represent the same or similar components or components with the same or similar functions from beginning to end. The described embodiments are some but not all of the embodiments of the present application. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present application, and should not be construed as a limitation to the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts fall within the scope of protection of the present application. The embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0032] In the description of the present 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 may be a fixed connection or an indirect connection through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0033] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship in the accompanying drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0034] The terms "first", "second", "third" (if any) in the description and claims of the present application and the above accompanying drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example.

[0035] In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or display comprising a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or displays.

[0036] In the related art, when the battery pack of a new energy vehicle is damaged at the bottom, it is necessary to disassemble the battery pack to determine whether there is damage and whether the battery needs to be replaced. Users can only confirm this by driving the vehicle to a professional repair shop and cannot do so by themselves. At the same time, some users may not be aware of whether the battery pack is damaged, resulting in the vehicle being in an unsafe state during subsequent driving.

[0037] In view of this, embodiments of the present application provide a battery tray, a battery pack, and an electrical device. The battery tray is provided with at least two gas encapsulation areas, and the gases encapsulated in the at least two gas encapsulation areas are different. When any one of the gas encapsulation areas is punctured, it indicates that there is damage at the corresponding position of the bottom plate assembly. The gas detection component can detect the corresponding gas, thereby reminding the user that there is damage to the bottom plate assembly of the battery tray, and thus improving the safety performance of the battery tray, the battery pack, and the electrical device.

[0038] The following will describe in detail the specific implementation manners of the battery tray, the battery pack, and the electrical device according to the embodiments of the present application with reference to the accompanying drawings.

[0039] Embodiments of the present application provide an electrical device, which may include an electrical device and a battery pack. The battery pack is used to supply power to the electrical device.

[0040] Exemplarily, the electrical device may be a vehicle, the electrical device may be an electric motor, and the battery pack may provide electrical energy for the electric motor, so as to drive the vehicle to travel through the electric motor.

[0041] It should be understood that the vehicle may be a new energy vehicle (New Energy Vehicle), such as a pure electric vehicle (Pure Electric Vehicle / Battery Electric Vehicle; abbreviation: PEV / BEV), a range extended electric vehicle (Range Extended Electric Vehicle; abbreviation: REEV), a hybrid electric vehicle (Hybrid Electric Vehicle; abbreviation: HEV), a fuel cell electric vehicle, and the vehicle may also be any vehicle with a battery pack.

[0042] Refer to Figure 1 As shown, on the basis of the above embodiments, embodiments of the present application further provide a battery pack, which may include battery cells and a battery tray. The battery cells are arranged in the battery tray. The battery tray is used to carry the battery cells and install the battery pack on the electrical device through the battery tray.

[0043] It can be understood that a single battery cell can only provide a relatively small voltage and a short battery life. For electrical devices that require a relatively large voltage, multiple battery cells need to be integrated. Therefore, multiple battery cells can be connected in series, and the battery tray can be used to integrate the battery cells, and then multiple battery cells are assembled to form a battery pack with a relatively large voltage and a long battery life.

[0044] When installing the battery pack on an electrical device, the battery tray serves as an intermediate connecting component. For example, when the electrical device is a vehicle, the vehicle may include a chassis, a motor, and a battery pack. Both the motor and the battery pack can be installed on the chassis, and the battery pack can provide electrical energy for the motor. The battery pack can be connected to the chassis through the battery tray, thereby fixing the battery pack to the chassis.

[0045] Referring to Figures 1 to 4 As shown, based on the above embodiments, the present application further provides a battery tray. The battery tray includes a frame 100, a bottom plate assembly 200, at least two gas encapsulation areas 300, and at least two gas detection components 400. The bottom plate assembly 200 is connected to the frame 100. At least two gas encapsulation areas 300 are provided on the bottom plate assembly 200. The gases encapsulated in the at least two gas encapsulation areas 300 are different, and the projections of the at least two gas encapsulation areas 300 in the height direction of the frame 100 are staggered from each other. At least two gas detection components 400 are correspondingly arranged with the at least two gas encapsulation areas 300, and the at least two gas detection components 400 are used to detect at least two gases.

[0046] In the present application, the frame 100 is a support structure of the battery tray. The frame 100 is used to improve the overall mechanical properties of the battery tray. The bottom plate assembly 200 is used to connect to the frame 100 to jointly define a battery cell cavity for accommodating battery cells, so as to integrate multiple battery cells together, and can protect the battery cells located in the battery cell cavity.

[0047] When the battery pack is installed on a vehicle, the bottom of the vehicle is easily damaged, which in turn causes damage to the battery tray. Therefore, in the battery tray of the embodiments of the present application, the bottom plate assembly 200 is provided with at least two gas encapsulation areas 300, and the projections of the at least two gas encapsulation areas 300 in the height direction of the frame 100 are staggered from each other, that is, the at least two gas encapsulation areas 300 are arranged at different positions corresponding to the bottom plate assembly 200, and the gases encapsulated in the at least two gas encapsulation areas 300 are different.

[0048] In this way, when the vehicle encounters an obstacle during driving and the obstacle rubs against the bottom plate assembly 200, if a certain position of the bottom plate assembly 200 is damaged such as cracked or punctured, the corresponding gas encapsulation area 300 will be punctured, and then the corresponding gas will be released. After that, the corresponding gas detection component 400 can detect the gas and then feedback the detection result. The user can know the specific damage position of the bottom plate assembly 200 according to the detection result, so as to perform targeted maintenance and repair.

[0049] It can be understood that, compared with only setting one gas encapsulation area 300, setting at least two gas encapsulation areas 300 can expand the damage detection range, and at least two gas encapsulation areas 300 encapsulate different gases, which can effectively identify the damage position of the bottom plate assembly 200, thereby improving the accuracy of damage detection.

[0050] For example, there are two gas encapsulation areas 300, and the gases encapsulated in the two gas encapsulation areas 300 can include any one or more of hydrogen, helium, and carbon monoxide.

[0051] The battery tray of the embodiment of the present application includes a frame 100, a bottom plate assembly 200, a gas encapsulation area 300, and a gas detection component 400. By setting the frame 100 to support the battery tray and connect the battery tray and the electrical equipment, by setting the bottom plate assembly 200 to jointly carry the battery cells after connecting with the frame 100, by setting the gas encapsulation area 300 to release gas when the bottom plate assembly 200 is damaged, by setting the gas detection component 400 to detect the gas released by the gas encapsulation area 300 and feedback the detection result, and then issue a reminder, by setting at least two gas encapsulation areas 300 to expand the coverage area of the gas encapsulation area 300 on the bottom plate assembly 200, thereby expanding the detection range, and by making at least two gas encapsulation areas 300 encapsulate different gases, the damage position of the bottom plate assembly 200 can be effectively identified, thereby improving the detection accuracy. Thus, the battery tray of the embodiment of the present application has high safety, thereby improving the safety of the battery pack and the electrical equipment.

[0052] Refer to FIG. 1, Figure 2 and Figure 5 as shown, in some embodiments, the battery tray of the present application further includes at least two first gas encapsulation members 500, and at least two gas encapsulation areas 300 are located in different first gas encapsulation members 500.

[0053] That is to say, in the above setting method, two or more first gas encapsulation members 500 can be dispersedly arranged on the bottom plate assembly 200. Each first gas encapsulation member 500 has a gas encapsulation area 300, and each gas encapsulation area 300 can be used to encapsulate gas. In this way, at least two first gas encapsulation members 500 encapsulate different gases and are arranged corresponding to different positions of the bottom plate assembly 200, thereby effectively identifying the damage position of the bottom plate assembly 200.

[0054] It can be understood that when there are three first gas encapsulation members 500, the gases encapsulated by the three first gas encapsulation members 500 can all be different, and the three first gas encapsulation members 500 are arranged corresponding to three different positions of the bottom plate assembly 200. Or, when there are three first gas encapsulation members 500, the gases encapsulated by two of the three first gas encapsulation members 500 can be the same, and the gas encapsulated by the remaining one is different from the other two.

[0055] Refer to Figure 3 、 Figure 4 、 Figures 6 to 8 As shown in

[0056] In the above setting method, one second gas encapsulation member 600 can be divided into two or more gas encapsulation areas 300, thereby forming at least two gas encapsulation areas 300 on one second gas encapsulation member 600, and then corresponding to different positions of the bottom plate assembly 200, so as to improve the accuracy of damage detection.

[0057] Refer to Figures 6 to 8 As shown in

[0058] That is to say, the outer sealing edge 610 is used to seal the outer edge of the second gas encapsulation member 600, thereby isolating the internal space of the second gas encapsulation member 600 from the external environment. On the basis of the outer sealing edge 610, the inner sealing edge 620 can further divide the internal space of the second gas encapsulation member 600 into at least two relatively independent spaces, thereby facilitating the formation of at least two gas encapsulation areas 300 on one second gas encapsulation member 600, and thus facilitating one second gas encapsulation member 600 to encapsulate at least two different gases.

[0059] Refer to Figure 6As shown, in a possible implementation, the second gas encapsulation member 600 has two gas encapsulation areas 300. The outer sealing edge 610 surrounds the outer peripheral side of the inner sealing edge 620. The inner sealing edge 620 defines one gas encapsulation area 300, and another gas encapsulation area 300 is defined between the inner sealing edge 620 and the outer sealing edge 610.

[0060] In the above arrangement, the inner sealing edge 620 and the outer sealing edge 610 form an inner and outer surrounding structure. One gas encapsulation area 300 can be used to encapsulate one gas, and another gas encapsulation area 300 can be used to encapsulate another gas. Among them, the projection of the inner sealing edge 620 on the bottom plate 210 unit can be square, and the projection of the outer sealing edge 610 on the bottom plate 210 unit can be square. Or, the projection of the inner sealing edge 620 on the bottom plate 210 unit can be circular, and the projection of the outer sealing edge 610 on the bottom plate 210 unit can be circular. This is beneficial to the thermal compression sealing edge of the second gas encapsulation member 600.

[0061] Refer to Figure 7 And Figure 8 As shown, in a possible implementation, the inner sealing edges 620 are arranged in a staggered manner, and both ends of the extending direction of the inner sealing edges 620 are connected to the outer sealing edge 610 to define four gas encapsulation areas 300 in the second gas encapsulation member 600.

[0062] In the above arrangement, the outer sealing edge 610 can be circular, and the two inner sealing edges 620 can be arranged in a staggered manner along the radial direction of the outer sealing edge 610. Then, four gas encapsulation areas 300 are divided on the second gas encapsulation member 600 by the outer sealing edge 610 and the inner sealing edges 620 together.

[0063] Or, the outer sealing edge 610 can be square, and the two inner sealing edges 620 can be arranged in a staggered manner along the length direction and the width direction of the outer sealing edge 610, or can also be arranged in a staggered manner along the diagonal of the outer sealing edge 610. Then, four gas encapsulation areas 300 are defined in the second gas encapsulation member 600 by the outer sealing edge 610 and the inner sealing edges 620 together.

[0064] Among them, the gases encapsulated in the four gas encapsulation areas 300 can all be different, or the gases encapsulated in the four gas encapsulation areas 300 can be the same in pairs or at least two are the same.

[0065] For example, when the outer sealing edge 610 is square and the two inner sealing edges 620 are arranged in a staggered manner along the length direction and the width direction of the outer sealing edge 610, four square gas encapsulation areas 300 can be defined. The four gas encapsulation areas 300 can respectively encapsulate different gases, and the four gas encapsulation areas 300 can be arranged corresponding to the four areas of the bottom plate assembly 200, thereby improving the accuracy of damage detection of the bottom plate assembly 200.

[0066] Refer toFigures 1 to 4 As shown, in specific implementation, the bottom plate assembly 200 includes a bottom plate 210 and a guard plate 220. The bottom plate 210 and the guard plate 220 are spaced apart along the height direction of the battery tray. At least one of the bottom plate 210 and the guard plate 220 is provided with a gas encapsulation area 300.

[0067] It should be understood that since the bottom plate 210 and the guard plate 220 are spaced apart along the height direction of the battery tray, when the battery pack is installed at the bottom of the vehicle, the guard plate 220 is located on the lower side and the bottom plate 210 is located on the upper side. After the bottom plate 210 is connected to the frame 100, they jointly define a battery cell cavity for accommodating the battery. The guard plate 220 is used to enhance the protection of the bottom of the battery tray. At least two gas encapsulation areas 300 can be all connected to the bottom plate 210, or at least two gas encapsulation areas 300 can be all connected to the guard plate 220, or one of at least two gas encapsulation areas 300 is connected to the bottom plate 210 and the other is connected to the guard plate 220.

[0068] When both the bottom plate 210 and the guard plate 220 are provided with gas encapsulation areas 300, the damage position of the bottom plate assembly 200 can be accurately located, and moreover, the damage degree of the bottom plate assembly 200 can be estimated, thereby improving the accuracy of damage detection of the bottom plate assembly 200.

[0069] That is to say, since the guard plate 220 is relatively closer to the obstacle than the bottom plate 210, if the obstacle rubs against the guard plate 220 and causes damage to the guard plate 220, the gas encapsulation area 300 connected to the guard plate 220 is punctured, and then gas is released. The gas encapsulation area 300 connected to the bottom plate 210 is not punctured, indicating that the damage degree of the bottom plate assembly 200 is relatively light.

[0070] If the obstacle rubs against the guard plate 220 and causes damage to the guard plate 220, and moreover, the obstacle continues to cause damage to the bottom plate 210, such that the gas encapsulation area 300 connected to the guard plate 220 is punctured, and the gas encapsulation area 300 connected to the bottom plate 210 is also punctured, and then gas is released, indicating that the damage degree of the bottom plate assembly 200 is relatively heavy.

[0071] In a possible implementation manner, the gas encapsulation area 300 is connected to the side of the bottom plate 210 facing the guard plate 220, and / or the gas encapsulation area 300 is connected to the side of the guard plate 220 facing the bottom plate 210.

[0072] Since the bottom plate 210 and the guard plate 220 are spaced apart in the height direction of the battery tray, a gap is formed between the bottom plate 210 and the guard plate 220. This gap can be used to arrange the gas encapsulation area 300. Among them, the gas encapsulation area 300 is connected to the side of the bottom plate 210 facing the guard plate 220 to facilitate the detection of whether the bottom plate 210 is damaged, and / or the gas encapsulation area 300 is connected to the side of the guard plate 220 facing the bottom plate 210 to facilitate the detection of whether the guard plate 220 is damaged.

[0073] In a possible implementation manner, the battery tray further includes a transmission wire harness, and the transmission wire harness is electrically connected to the gas detection component 400. The transmission wire harness is used to transmit the detection result of the gas detection component 400 to the controller of the electrical device.

[0074] In this way, when any one of the gas encapsulation areas 300 is punctured to release gas, the corresponding gas detection component 400 can detect the presence of the gas. At this time, it indicates that the position of the bottom plate assembly 200 corresponding to the punctured gas encapsulation area 300 is damaged. The gas detection component 400 can feedback the detection result to the controller of the electrical device through the transmission wire harness, and the controller of the electrical device can perform further control on other devices of the electrical device according to the detection result. For example, control the electrical device to stop operating, etc.

[0075] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A battery tray, characterized in that: include Frame(100); A base plate assembly (200), the base plate assembly (200) being connected to the frame (100); At least two gas packaging areas (300), the at least two gas packaging areas (300) being arranged on the base plate assembly (200), the gases packaged in the at least two gas packaging areas (300) being different, and the projections of the at least two gas packaging areas (300) in the height direction of the frame (100) being staggered with each other; At least two gas detection components (400), the at least two gas detection components (400) are arranged corresponding to the at least two gas packaging areas (300), and the at least two gas detection components (400) are used to detect at least two gases.

2. The battery tray according to claim 1, characterized in that: It also includes at least two first gas encapsulations (500), and at least two of the gas encapsulation areas (300) are located in different first gas encapsulations (500).

3. The battery tray according to claim 1, characterized in that: It also includes a second gas packaging (600), and at least two of the gas packaging areas (300) are located in the same second gas packaging (600).

4. The battery tray according to claim 3, characterized in that: The second gas packaging component (600) comprises an outer sealing edge (610) and an inner sealing edge (620), wherein the outer sealing edge (610) is arranged around the outer edge of the second gas packaging component (600), and the outer sealing edge (610) and the inner sealing edge (620) together divide the second gas packaging component (600) into at least two gas packaging areas (300).

5. The battery tray according to claim 4, characterized in that: The second gas packaging component (600) has two gas packaging areas (300), the outer sealing edge (610) is arranged on the outer peripheral side of the inner sealing edge (620), the inner sealing edge (620) defines one gas packaging area (300), and another gas packaging area (300) is defined between the inner sealing edge (620) and the outer sealing edge (610).

6. The battery tray according to claim 4, characterized in that: The two inner sealing edges (620) are arranged alternately, and both ends of the inner sealing edges (620) in the extending direction are connected to the outer sealing edges (610), so as to define four gas packaging areas (300) in the second gas packaging component (600).

7. The battery tray according to any one of claims 1 to 6, characterized in that: The base plate assembly (200) comprises a base plate (210) and a guard plate (220), wherein the base plate (210) and the guard plate (220) are spaced apart along the height direction of the battery tray, and at least one of the base plate (210) and the guard plate (220) is provided with the gas packaging area (300).

8. The battery tray according to claim 7, characterized in that: The gas packaging area (300) is connected to a side of the bottom plate (210) facing the protective plate (220), and / or the gas packaging area (300) is connected to a side of the protective plate (220) facing the bottom plate (210).

9. The battery tray according to any one of claims 1 to 6, characterized in that: It also comprises a transmission harness, the transmission harness being electrically connected to the gas detection component (400), and the transmission harness being used to transmit the detection result of the gas detection component (400) to a controller of an electrical device.

10. A battery pack, characterized in that: It comprises a battery cell and a battery tray as described in any one of claims 1 to 9, wherein the battery tray is used to carry the battery cell.

11. An electrical device, characterized in that: It comprises an electric device and the battery pack as claimed in claim 10, wherein the battery pack is used to supply power to the electric device.

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