Tray for battery device, battery device and electric equipment

Abstract

The utility model relates to the technical field of batteries, and provides a tray for a battery device, which is characterized by comprising a bottom plate, the edge beam is arranged on the periphery of the bottom plate, an accommodating cavity is defined by the edge beam and the bottom plate, and the accommodating cavity is used for accommodating the battery device; the protective films are arranged at the corner positions of the containing cavity and at least cover partial areas of the edge beams and the bottom plate. According to the utility model, on the premise that the original tray structure is not changed, the potential safety hazard of high-pressure liquid leakage in the battery pack is obviously reduced by sticking the P I film at the weak position of the corner; on the premise of preventing battery pack liquid leakage arc discharge short circuit, only a small amount of P I film cost is increased, and the product safety performance is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, and more specifically, to a tray for a battery device, a battery device and an electrical equipment. Background Art

[0002] During the use of new energy vehicles, working conditions such as mechanical abuse, electrical abuse, and thermal abuse can cause the core of the battery to get out of control, and then damage the insulation of the battery pack. Inside the battery pack, the out-of-control core is at the same potential as the tray, and there is a pressure difference between the non-out-of-control core and the tray. At the same time, the electrolyte leakage condenses and conducts at the low-temperature end, and further arc discharge may occur, posing a great potential safety hazard.

[0003] However, the existing tray does not provide targeted protection for this failure situation. After the power battery leaks liquid, problems such as short circuit, arc discharge and violent fire occur between the core and the tray through liquid connection. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is that the existing tray does not provide targeted protection for this failure situation. After the power battery leaks liquid, problems such as short circuit, arc discharge and violent fire occur between the core and the tray through liquid connection.

[0005] To solve the above technical problem, on the one hand, the present disclosure provides a tray for a battery device, which is characterized in that it includes: a bottom plate; side beams, the side beams are arranged on the outer periphery of the bottom plate and enclose a receiving cavity with the bottom plate, and the receiving cavity is used to receive the battery device; a protective film, the protective film is arranged at the corners of the receiving cavity and covers at least part of the side beams and the bottom plate.

[0006] As an optional technical solution of the utility model, the protective film is provided with an adhesive layer, and the protective film is adhered to part of the side beams and the bottom plate through the adhesive layer.

[0007] As an optional technical solution of the utility model, the protective film includes a first side beam pasting area, a first bottom plate pasting area, a second side beam pasting area and a second bottom plate pasting area. The first bottom plate pasting area is located at the bottom of the first side beam pasting area, and there is a crease at the connection between the first side beam pasting area and the first bottom plate pasting area.

[0008] As an optional technical solution of the utility model, the second side beam pasting area is located on the side far from the first side beam pasting area, the second bottom plate pasting area is arranged at the bottom of the second side beam pasting area, and there is a crease at the connection between the second side beam pasting area and the second bottom plate pasting area.

[0009] As an alternative technical solution of the present utility model, the protective film further includes a side beam adhesive connection portion and a bottom plate adhesive connection portion. The side beam adhesive connection portion is provided between the first side beam adhesive area and the second side beam adhesive area. The bottom plate adhesive connection portion is provided below the side beam adhesive connection portion. There are gaps between the first bottom plate adhesive area and the second bottom plate adhesive area and the bottom plate adhesive connection portion respectively.

[0010] As an alternative technical solution of the present utility model, the first side beam adhesive area, the side beam adhesive connection portion and the second side beam adhesive area are sequentially adhered to the side beam; the first bottom plate adhesive plate, the bottom plate adhesive connection portion and the second bottom plate adhesive area are sequentially adhered to the bottom plate.

[0011] As an alternative technical solution of the present utility model, the dimensions of the first side beam adhesive area, the second side beam adhesive area and the side beam adhesive connection portion in the second direction are 25 - 35 mm, and / or the dimensions of the first bottom plate adhesive area, the second bottom plate adhesive area and the bottom plate adhesive connection portion in the second direction are 30 - 40 mm, and / or the dimensions of the first side beam adhesive area and the first bottom plate adhesive area in the first direction are 130 - 140 mm, and / or the dimensions of the second side beam adhesive area and the second bottom plate adhesive area in the first direction are 50 - 60 mm.

[0012] As an alternative technical solution of the present utility model, the protective film is a PI film.

[0013] As an alternative technical solution of the present utility model, the protective film is integrally cut and formed.

[0014] As an alternative technical solution of the present utility model, the accommodating cavity includes four corners, and the protective film is disposed at the positions of the four corners.

[0015] On the other hand, as an alternative technical solution of the present utility model, the present disclosure further provides a battery device, including the above-mentioned tray; a battery cell module, the battery cell module is formed by stacking a plurality of single battery cells in the accommodating cavity; an upper cover, the upper cover covers the opening of the accommodating cavity.

[0016] As an alternative technical solution of the present utility model, the distance between the end face of the battery cell module and the inner side of the side beam is 30 - 50 mm.

[0017] On the other hand, as an alternative technical solution of the present utility model, the present disclosure further provides an electrical device, characterized in that it includes: the above-mentioned tray, or, the above-mentioned battery device.

[0018] The beneficial effects of the present utility model are as follows: On the premise that the original tray structure remains unchanged, by pasting PI films at the weak corner positions, the potential safety hazard of high-voltage liquid leakage in the battery pack is significantly reduced. On the premise of preventing liquid leakage and arcing short-circuit in the battery pack, only the cost of a small amount of PI film is increased, effectively improving the safety performance of the product. Description of the Drawings

[0019] In order to more clearly illustrate the specific embodiments of the present disclosure or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the following-described drawings are some embodiments of the present disclosure. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0020] Figure 1 It is a schematic diagram of the tray of the present utility model;

[0021] Figure 2 It is an enlarged schematic diagram of the corner of the tray of the present utility model;

[0022] Figure 3 It is a schematic diagram of the flat surface where the protective film is pasted in the present utility model;

[0023] Figure 4 It is a partial schematic diagram of the battery device of the present utility model.

[0024] The reference numerals in the specification are as follows:

[0025] 1. Tray; 11. Bottom plate; 12. Side beam; 13. Protective film; 131. First side beam pasting area; 132. First bottom plate pasting area; 133. Second side beam pasting area; 134. Second bottom plate pasting area; 135. Side beam pasting connection part; 136. Bottom plate pasting connection part; 137. First protective film gap; 138. Second protective film gap; 2. Battery cell module. Detailed Embodiments

[0026] To make the objectives, technical solutions, and advantages of the embodiments of the present disclosure clearer, the following will clearly and completely describe the technical solutions of the present disclosure with reference to the drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present disclosure. Based on the embodiments in the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present disclosure.

[0027] The following will detail a tray for a battery device, a battery device, and an electrical device according to the present utility model.

[0028] In an embodiment of the present disclosure, as Figures 1-4, the present disclosure provides a tray 1 for a battery device, characterized in that it includes: a bottom plate 11; a side beam 12, the side beam 12 is disposed on the outer periphery of the bottom plate 11 and encloses a receiving cavity with the bottom plate 11, and the receiving cavity is used to receive the battery device; a protective film 13, the protective film 13 is disposed at the corners of the receiving cavity and covers at least part of the regions of the side beam 12 and the bottom plate 11.

[0029] In an embodiment of the present disclosure, as Figures 1-4 , the protective film 13 is provided with an adhesive layer, and the protective film 13 is adhered to part of the regions of the side beam 12 and the bottom plate 11 through the adhesive layer. Specifically, an adhesive is provided on the back of the protective film 13, and the protective film 13 is directly adhered to the corners of the tray 1, covering the positions of three sides of the corners. Combining Figures 1-4 , the protective film 13 is pasted at each corner inside the tray 1 for protection. On the premise of preventing the battery pack from leaking liquid and causing arc short-circuit, only a small amount of the cost of the protective film 13 is increased, and the safety performance of the product is effectively improved.

[0030] In an embodiment of the present disclosure, as Figures 1-4 , the protective film 13 includes a first side beam pasting area 131, a first bottom plate pasting area 132, a second side beam pasting area 133 and a second bottom plate pasting area 134. The first bottom plate pasting area 131 is located at the bottom of the first side beam pasting area 132, and there is a crease at the connection between the first side beam pasting area 131 and the first bottom plate pasting area 132. Specifically, the bottom plate pasting area is adhered to the bottom plate of the tray, and it is the bottom according to the relative position relationship of the tray. Specifically, as Figures 1-4 , the first side beam pasting area 131 and the first bottom plate pasting area 132 are used to be pasted on the side of the side beam 12, and the bottom plate of the protective film 13 below. The crease makes the pasting more convenient and also ensures the integrity of the whole.

[0031] In an embodiment of the present disclosure, as Figures 1-4 , the second side beam pasting area 133 is located on the side away from the first side beam pasting area 131, a second bottom plate pasting area 134 is provided at the bottom of the second side beam pasting area 133, and there is a crease at the connection between the second side beam pasting area 133 and the second bottom plate pasting area 134. As Figures 1-4 , specifically, the second side beam pasting area 133 and the second bottom plate pasting area 134 are located on the other side of the protective film 13. The second side beam pasting area 133 and the second bottom plate pasting area 134 are distributed vertically and are respectively pasted on the protective film 13, the side beam 12 and the bottom plate 11.

[0032] In an embodiment of the present disclosure, as Figures 1-4, the protective film further includes a side beam adhesive connection portion and a bottom plate adhesive connection portion. The side beam adhesive connection portion is disposed between the first side beam adhesive area and the second side beam adhesive area. The bottom plate adhesive connection portion is disposed below the side beam adhesive connection portion. There are gaps between the first bottom plate adhesive area and the second bottom plate adhesive area and the bottom plate adhesive connection portion respectively. Specifically, as Figures 1-4 , on both sides of the side beam adhesive connection portion 135 are the first side beam adhesive area 131 and the second side beam adhesive area 133 respectively, which play a connecting role. It is adhered to the intersection of the corners of the tray 1. The bottom plate adhesive connection portion 136 at the bottom is used to cover the gap between the first bottom plate adhesive area 132 and the second bottom plate adhesive area 134. The shape of the gap can be a rectangle or other shapes. As shown in the figure, the gap includes a first protective film gap 137 and a second protective film gap 138. The shapes of the first protective film gap 137 and the second protective film gap 138 are both rectangles or other shapes, ensuring that there will be no wrinkles when the protective film 13 is adhered.

[0033] In an embodiment of the present disclosure, as Figures 1-4 , the first side beam adhesive area 131, the beam adhesive connection portion 135, and the second side beam adhesive area 133 are adhered to the side beam 12 in sequence; the first bottom plate adhesive plate 132, the bottom plate adhesive connection portion 136, and the second bottom plate adhesive area 134 are adhered to the bottom plate 11 in sequence.

[0034] In an embodiment of the present disclosure, as Figures 1-4 , the dimensions of the first side beam adhesive area 131, the second side beam adhesive area 133, and the side beam adhesive connection portion 135 in the second direction are 25 - 35 mm, and / or the dimensions of the first bottom plate adhesive area 132, the second bottom plate adhesive area 134, and the bottom plate adhesive connection portion 136 in the second direction are 30 - 40 mm, and / or the dimensions of the first side beam adhesive area 131 and the first bottom plate adhesive area 132 in the first direction are 130 - 140 mm, and / or the dimensions of the second side beam adhesive area 133 and the second bottom plate adhesive area 134 in the first direction are 50 - 60 mm. Specifically, the first direction is the X direction as Figures 1-4 , and the second direction is as Figures 1-4In the Y direction. On the other hand, the above dimensions are preferred dimensions. In the above case, the dimensions within this range are more accurate. Whether in terms of the protection effect, the convenience of the pasting operation, the firmness of pasting, and cost control, the dimensions within this range have more remarkable effects. It is also possible that the dimensions of the first side beam pasting area 131, the second side beam pasting area 133, and the side beam pasting connection part 135 in the second direction are 20 - 40 mm, and / or the dimensions of the first bottom plate pasting area 132, the second bottom plate pasting area 134, and the bottom plate pasting connection part 136 in the second direction are 20 - 40 mm, and / or the dimensions of the first side beam pasting area 131 and the first bottom plate pasting area 132 in the first direction are 120 - 160 mm, and / or the dimensions of the second side beam pasting area 133 and the second bottom plate pasting area 134 in the first direction are 30 - 60 mm.

[0035] In an embodiment of the present disclosure, as Figures 1-4 , the protective film 13 is a PI film. Specifically, PI is a polymer material with excellent insulation performance, high temperature resistance, and waterproof properties. Its glass phase transition temperature is about 370 °C. Under the condition of liquid conduction in the battery pack, the PI film has a good protection effect.

[0036] In an embodiment of the present disclosure, as Figures 1-4 , the protective film 13 is integrally cut and formed. Specifically, it is integrally cut according to the specific structure shown in Figures 1-4 , reducing the probability of liquid penetration through the splicing gap, and there is no obvious metal exposure at the junction after being attached to the corners of the tray.

[0037] In an embodiment of the present disclosure, as Figures 1-4 , the accommodating cavity includes four corners, and the protective film 13 is arranged at the positions of the four corners.

[0038] In an embodiment of the present disclosure, as Figures 1-4 , the present disclosure further provides a battery device, including the above-mentioned tray 1; a battery cell module 2, the battery cell module 2 is formed by stacking a plurality of single battery cells in the accommodating cavity; an upper cover, the upper cover covers the opening of the accommodating cavity. Specifically, the battery device can be a battery assembly or a battery pack.

[0039] In an embodiment of the present disclosure, as Figures 1-4 , the distance between the end face of the battery cell module 2 and the inner side of the side beam 12 is 30 - 50 mm. Specifically, the space left by this distance can be used for installing connection pieces, brackets, sampling boards, etc.

[0040] In an embodiment of the present disclosure, as Figures 1-4, the present disclosure further provides an electrical device, characterized by comprising: the above-mentioned tray 1, or, the above-mentioned battery device. Specifically, the battery device is disposed inside the electrical device and is used to provide power for the operation of the electrical device. The battery assembly can be an electrical device such as a new energy vehicle or a ship.

[0041] In summary, without changing the original tray structure, the present utility model can significantly reduce the safety hazard of high-voltage liquid leakage in the battery pack by pasting PI films at the weak positions of the corners. On the premise of preventing liquid leakage and arcing short circuit in the battery pack, only the cost of a small amount of PI film is increased, effectively improving the safety performance of the product.

[0042] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model 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 thus should not be construed as a limitation of the present utility model.

[0043] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0044] In the present utility model, unless otherwise clearly specified and limited, the terms "mounted", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0045] In the present utility model, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on the top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or simply means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "below" and "beneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or simply means that the horizontal height of the first feature is less than that of the second feature.

[0046] In the description of this specification, the descriptions with reference to the terms "an embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do 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. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0047] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present utility model.

Claims

1. A tray for a battery device, characterized in that, Comprising: Bottom plate; Side beams, which are arranged on the outer periphery of the bottom plate and enclose a receiving cavity with the bottom plate for receiving the battery device; Protective film, which is arranged at the corners of the receiving cavity and covers at least part of the side beams and the bottom plate; the protective film is a PI film.

2. The tray according to claim 1, characterized in that, The protective film is provided with an adhesive layer and is adhered to part of the side beams and the bottom plate through the adhesive layer.

3. The tray according to claim 1, characterized in that, The protective film includes a first side beam adhesive area, a first bottom plate adhesive area, a second side beam adhesive area and a second bottom plate adhesive area. The first bottom plate adhesive area is located at the bottom of the first side beam adhesive area, and there is a crease at the connection between the first side beam adhesive area and the first bottom plate adhesive area.

4. The tray according to claim 3, characterized in that, The second side beam adhesive area is located on the side away from the first side beam adhesive area, and a second bottom plate adhesive area is arranged at the bottom of the second side beam adhesive area, and there is a crease at the connection between the second side beam adhesive area and the second bottom plate adhesive area.

5. The tray according to claim 4, wherein, The protective film further includes a side beam adhesive connection part and a bottom plate adhesive connection part. The side beam adhesive connection part is arranged between the first side beam adhesive area and the second side beam adhesive area, and the bottom plate adhesive connection part is arranged below the side beam adhesive connection part. There are gaps between the first bottom plate adhesive area and the second bottom plate adhesive area and the bottom plate adhesive connection part respectively.

6. The tray according to claim 5, wherein, The first side beam adhesive area, the side beam adhesive connection part and the second side beam adhesive area are sequentially adhered to the side beam; the first bottom plate adhesive area, the bottom plate adhesive connection part and the second bottom plate adhesive area are sequentially adhered to the bottom plate.

7. The tray according to claim 6, characterized in that, The dimensions of the first side beam adhesive area, the side beam adhesive connection part and the second side beam adhesive area in the second direction are 25 - 35 mm, and / or the dimensions of the first bottom plate adhesive area, the second bottom plate adhesive area and the bottom plate adhesive connection part in the second direction are 30 - 40 mm, and / or the dimensions of the first side beam adhesive area and the first bottom plate adhesive area in the first direction are 130 - 140 mm, and / or the dimensions of the second side beam adhesive area and the second bottom plate adhesive area in the first direction are 50 - 60 mm.

8. The tray according to claim 7, characterized in that, The protective film is integrally cut and formed.

9. The tray according to claim 1, wherein The receiving cavity includes four corners, and the protective film is arranged at the four corner positions.

10. A battery device, characterized in that, Comprising: The tray according to any one of claims 1 - 9; A battery cell module, which is formed by stacking a plurality of single battery cells in the receiving cavity; An upper cover, which covers the opening of the receiving cavity.

11. The battery device according to claim 10, characterized in that, The distance from the end face of the battery cell module to the inner side of the side beam is 30 - 50 mm.

12. An electrical device, characterized in that, Comprising: The tray according to any one of claims 1 - 9, or the battery device according to any one of claims 10 - 11.

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