Battery

Abstract

The utility model discloses a battery, which is used for solving the technical problem that when the existing battery is inverted, a battery core in the battery extrudes a tab onto a battery top cover under the action of gravity, so that the battery is short-circuited. The battery provided by the utility model comprises an outer shell, a top cover arranged at the top of the outer shell and a battery cell arranged in the outer shell, the battery further comprises a fixing structure, an insulating film is coated on the outer surface of the battery cell, and the fixing structure is arranged on the outer surface of the battery cell. And the insulating film is fixedly connected with the outer shell through the fixing structure so as to limit the battery cell to move towards the top cover when the battery is inverted. Through the design, when the battery is inverted, the battery cell can be prevented from moving downwards to extrude the tab onto the battery top cover, so that effective safety protection is provided, and more choices are provided for the use direction of the battery.

Description

Technical Field

[0001] This utility model relates to the field of battery design technology, and in particular to a battery. Background Technology

[0002] In conventional batteries, the explosion-proof valve is typically located on the top cover, with its opening facing upwards as the battery cell is placed vertically. When the battery is assembled into a battery module and integrated into a vehicle, the valve opening faces the driver and passengers. In the event of an emergency, if the explosion-proof valve ruptures, it poses a significant safety hazard to the driver and passengers. Therefore, to avoid this situation, installing the battery in an inverted manner is gradually becoming the future trend.

[0003] When the battery is inverted, the top cover and the explosion-proof valve face towards the ground. However, this method creates a new problem: under the influence of gravity, the battery cells will press the tabs against the top cover and make close contact with it. This can cause a short circuit inside the battery, directly leading to a risk of loss of control and posing a serious safety hazard to users.

[0004] Therefore, finding a technical solution that can solve the above-mentioned technical problems has become an important research topic for those skilled in the art. Utility Model Content

[0005] This utility model discloses a battery to solve the technical problem that when an existing battery is inverted, the battery cells inside the battery will be pressed against the top cover by gravity, thereby causing a short circuit.

[0006] The present invention provides a battery comprising a housing, a top cover disposed on the top of the housing, and a battery cell disposed within the housing, and further comprising a fixing structure, wherein the outer surface of the battery cell is covered with an insulating film, and the insulating film is fixedly connected to the housing through the fixing structure to restrict the battery cell from moving toward the top cover when the battery is inverted.

[0007] Optionally, the battery cell has a top surface, a bottom surface, and two large surfaces and two side surfaces surrounding the top surface and the bottom surface, wherein the two large surfaces are arranged opposite to each other, and the two side surfaces are arranged opposite to each other.

[0008] Optionally, the battery cell has two oppositely arranged sides, both of which are covered with the insulating film;

[0009] The fixing structure includes a first engaging part and a second engaging part;

[0010] The first engaging portion is disposed on the insulating film, and the second engaging portion is disposed on the two opposite inner sides of the outer casing and corresponds to the position of the first engaging portion. The first engaging portion and the second engaging portion engage to restrict the cell from moving toward the top cover of the battery when the battery is inverted.

[0011] Optionally, the first engaging portion is provided with a first guide slope, and the second engaging portion is provided with a second guide slope that cooperates with the first guide slope;

[0012] When the battery cell is installed inside the housing, the first guide slope slides along the second guide slope until the first guide slope passes the second guide slope, at which point the first engaging part engages with the second engaging part.

[0013] Optionally, the first engaging portion is fixed to the outer surface of the insulating film by adhesive bonding, and the second engaging portion is integrally formed on the inner surface of the outer casing.

[0014] Optionally, the battery cell has two oppositely arranged sides, both of which are covered with the insulating film;

[0015] The fixing structure includes a first magnetic attraction part and a second magnetic attraction part;

[0016] The first magnetic attraction part is disposed on the insulating film, and the second magnetic attraction part is disposed on the two opposite outer surfaces of the outer casing and corresponds to the position of the first magnetic attraction part. The first magnetic attraction part and the second magnetic attraction part are attracted to each other to restrict the cell from moving towards the top cover of the battery when the battery is inverted.

[0017] Optionally, the first magnetic part is fixed to the outer surface of the insulating film by adhesive or embedding, and the second magnetic part is fixed to the outer surface of the outer shell by embedding.

[0018] Optionally, the bottom of the battery cell is covered with the insulating film;

[0019] The fixing structure includes a first connecting plate and a slot;

[0020] The first connecting plate is disposed on the insulating film, and the slot is disposed on the inner bottom surface of the outer casing. The first connecting plate is engaged in the slot to restrict the cell from moving towards the top cover of the battery when the battery is inverted.

[0021] Optionally, the bottom of the battery cell is covered with the insulating film;

[0022] The fixing structure includes a third magnetic attraction part and a fourth magnetic attraction part;

[0023] The third magnetic attraction part is disposed on the insulating film and abuts against the inner bottom wall of the outer shell;

[0024] The fourth magnetic attraction part is disposed on the outer bottom wall of the outer casing and corresponds to the position of the third magnetic attraction part. The third magnetic attraction part and the fourth magnetic attraction part are attracted to each other to restrict the cell from moving towards the top cover of the battery when the battery is inverted.

[0025] Optionally, the fixing structure further includes a second connecting plate, which is located between the third magnetic attraction part and the insulating film, and one surface of the second connecting plate is connected to the insulating film, while the other surface of the second connecting plate is connected to the third magnetic attraction part.

[0026] Optionally, the area of ​​the fourth magnetic attraction part is larger than the area of ​​the third magnetic attraction part.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] In this embodiment of the battery, the insulating film covering the battery cell is fixedly connected to the outer casing by a fixing structure, thereby restricting the movement of the battery cell towards the top cover when the battery is inverted. This design prevents the battery cell from moving downwards and pressing the tabs against the top cover when the battery is inverted, providing effective safety protection and offering more options for battery usage orientation. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 An exploded view of the fixed structure in a battery provided by this utility model when the first structural form is adopted;

[0031] Figure 2 A schematic diagram of the first engaging portion when the fixing structure in a battery provided by this utility model adopts the first structural form;

[0032] Figure 3 A schematic diagram of the second engaging portion when the fixing structure in a battery provided by this utility model adopts the first structural form;

[0033] Figure 4 An exploded view of the structure of a battery with a second structural form provided by this utility model;

[0034] Figure 5 A cross-sectional view of a battery fixing structure using a third structural form provided by this utility model;

[0035] Figure 6 A schematic diagram of the force on the battery cell when the fixing structure in the battery adopts a third structural form, as provided by this utility model;

[0036] Figure 7 A cross-sectional view of a battery fixing structure using a fourth structural form provided by this utility model;

[0037] Figure 8 An enlarged cross-sectional view of a fourth structural form of a fixing structure in a battery provided by this utility model;

[0038] Illustration: 1. Battery cell; 2. Housing; 3. Insulating film; 4. First engaging part; 401. Second engaging part; 5. Second guide slope; 501. First magnetic attraction part; 6. Second magnetic attraction part; 7. First connecting plate; 8. Slot; 9. Second connecting plate; 10. Third magnetic attraction part; 11. Fourth magnetic attraction part. Detailed Implementation

[0039] This utility model discloses a battery to solve the technical problem that when existing batteries are inverted, the battery cells inside the battery will be pressed against the top cover by gravity, thereby causing a short circuit.

[0040] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] Please see Figures 1 to 8 The present invention provides a battery comprising a housing 2, a top cover disposed on the top of the housing 2, and a battery cell 1 disposed within the housing 2. The battery further comprises a fixing structure, wherein the outer surface of the battery cell 1 is covered with an insulating film 3, and the insulating film 3 is fixedly connected to the housing 2 through the fixing structure to restrict the battery cell 1 from moving toward the top cover when the battery is inverted.

[0042] Specifically, with Figure 1For example, in this embodiment, the top of the outer casing 2 of the battery has an open structure, and a top cover plate is installed on the open structure. The top cover plate is provided with a positive terminal, a negative terminal, and an explosion-proof valve. When the battery in this embodiment is inverted, the top cover of the battery will be set downwards.

[0043] Furthermore, in this embodiment, the outer surface of the battery cell 1 specifically comprises the top surface, the bottom surface, and two large surfaces and two side surfaces surrounding the top and bottom surfaces. The two large surfaces and the two side surfaces are arranged opposite each other. Those skilled in the art can easily understand that the aforementioned large surface refers to the outer side surface with the larger surface area, and the aforementioned side surface refers to the outer side surface with the smaller surface area.

[0044] In this embodiment, the insulating film 3 covering the battery cell 1 is fixedly connected to the outer casing 2 through a fixing structure, thereby restricting the battery cell 1 from moving towards the top cover of the battery when the battery is inverted. Through the above design, it is possible to prevent the battery cell 1 from moving downwards and pressing the tabs against the top cover of the battery when the battery is inverted, providing effective safety protection and also providing more options for the battery's usage direction.

[0045] Furthermore, in this embodiment, the fixing structure has various different structural forms, such as... Figures 1 to 3 As shown, the first structural form of the fixing structure includes a first engaging part 4 and a second engaging part 5;

[0046] The two opposite sides of the battery cell 1 are covered with the insulating film 3. The first engaging part 4 is disposed on the insulating film 3, and the second engaging part 5 is disposed on the two opposite inner sides of the outer casing 2 and corresponds to the position of the first engaging part 4. The first engaging part 4 and the second engaging part 5 engage to restrict the battery cell 1 from moving towards the top cover of the battery when the battery is inverted.

[0047] To facilitate the assembly of the battery cell 1 into the housing 2, the first engaging part 4 in this embodiment is provided with a first guide slope 401, and the second engaging part 5 is provided with a second guide slope 501 that cooperates with the first guide slope 401.

[0048] When the battery cell 1 is installed inside the outer casing 2, the first guide slope 401 slides along the second guide slope 501 until the first guide slope 401 passes the second guide slope 501, at which point the first engaging part 4 engages with the second engaging part 5.

[0049] It should be noted that, through the above design, the first engaging part 4 and the second engaging part 5 can automatically engage when the battery cell 1 is installed into the outer casing 2. Furthermore, the design of the first guide slope 401 and the second guide slope 501 also avoids interference between the first engaging part 4 and the second engaging part 5 when the battery cell 1 is installed into the outer casing 2.

[0050] In addition, the first engaging part 4 in this embodiment can be made of plastic material or insulating elastic material, and the first engaging part 4 can be fixed to the outer side of the insulating film 3 by adhesive. The engaging part in this embodiment can be made of the same material as the outer shell 2. Preferably, the second engaging part 5 is integrally formed on the inner side of the outer shell 2. The integral forming method is not limited to machining or die casting.

[0051] In another specific embodiment, the structure of the first engaging part 4 can be an engaging protrusion, and the second engaging part 5 can be an engaging groove that cooperates with the engaging protrusion. Alternatively, the first engaging part 4 can be an engaging groove, and the second engaging part 5 can be an engaging protrusion. This embodiment does not limit the structure of the first engaging part 4 and the second engaging part 5. Designers can design a suitable structure for the first engaging part 4 and the second engaging part 5 according to the actual situation.

[0052] Furthermore, such as Figure 4 As shown, the second structural form of the fixed structure includes a first magnetic attraction part 6 and a second magnetic attraction part 7;

[0053] The two opposite sides of the battery cell 1 are covered with the insulating film 3. The first magnetic attraction part 6 is disposed on the insulating film 3, and the second magnetic attraction part 7 is disposed on the two opposite outer sides of the outer casing 2 and corresponds to the position of the first magnetic attraction part 6. The first magnetic attraction part 6 and the second magnetic attraction part 7 are attracted to each other to restrict the battery cell 1 from moving towards the top cover of the battery when the battery is inverted.

[0054] It should be noted that in this embodiment, the magnetic pole of the first magnetic attraction part 6 facing the second magnetic attraction part 7 is opposite to the magnetic pole of the second magnetic attraction part 7 facing the first magnetic attraction part 6. That is, when the magnetic pole of the first magnetic attraction part 6 facing the second magnetic attraction part 7 is the N pole, the magnetic pole of the second magnetic attraction part 7 facing the first magnetic attraction part 6 is the S pole.

[0055] In addition, the first magnetic suction part 6 in this embodiment can be fixed to the outer surface of the insulating film 3 by adhesive or embedding.

[0056] In this embodiment, the second magnetic part 7 can be embedded or fixed to the outer surface of the outer shell 2.

[0057] It should be noted that this embodiment does not limit the number and size of the first magnetic attraction part 6 and the second magnetic attraction part 7. Designers can select an appropriate number of the first magnetic attraction part 6 and the second magnetic attraction part 7 according to the size of the outer shell 2 and the battery cell 1.

[0058] Furthermore, such as Figure 5 and Figure 6 As shown, the third structural form of the fixed structure includes a first connecting plate 8 and a slot 9;

[0059] The bottom of the battery cell 1 is covered with the insulating film 3, the first connecting plate 8 is disposed on the insulating film 3, and the slot 9 is disposed on the inner bottom surface of the outer casing 2. The first connecting plate 8 is engaged in the slot 9 to restrict the battery cell 1 from moving towards the top cover of the battery when the battery is inverted.

[0060] It should be noted that the first connecting plate 8 in this embodiment can be fixed to the bottom surface of the insulating film 3 by adhesive bonding. Specifically, hot melt adhesive or other adhesives can be used to fix it to the insulating film 3.

[0061] Furthermore, such as Figure 7 and Figure 8 As shown, the fourth type of fixed structure includes a second connecting plate 10, a third magnetic suction part 11, and a fourth magnetic suction part 12;

[0062] The bottom of the battery cell 1 is covered with the insulating film 3, the second connecting plate 10 is disposed on the insulating film 3, and the third magnetic suction part 11 is disposed on the surface of the second connecting plate 10 away from the battery cell 1 and abuts against the inner bottom wall of the outer casing 2.

[0063] The fourth magnetic attraction part 12 is disposed on the outer bottom wall of the outer casing 2 and corresponds to the position of the third magnetic attraction part 11. The third magnetic attraction part 11 and the fourth magnetic attraction part 12 are attracted to each other to restrict the cell 1 from moving towards the top cover of the battery when the battery is inverted.

[0064] It should be noted that in this embodiment, the second connecting plate 10 serves to connect the insulating film 3 and the third magnetic suction part 11. The second connecting plate 10 can be fixed to the bottom surface of the insulating film 3 by adhesive bonding. Similarly, the third magnetic suction part 11 can also be fixed to the surface of the second connecting plate 10 by adhesive bonding. The design of the second connecting plate 10 avoids the situation where the bottom surface of the battery cell 1 is uneven compared to the bottom surface of the insulating film 3, which would lead to poor bonding effect.

[0065] In addition, the area of ​​the fourth magnetic attraction part 12 in this embodiment can be less than or equal to the bottom area of ​​the outer shell 2, and the area of ​​the third magnetic attraction part 11 in this embodiment can be less than or equal to the area of ​​the second connecting plate 10. To ensure the stability of the magnetic attraction, the area of ​​the fourth magnetic attraction part 12 in this embodiment needs to be greater than the area of ​​the third magnetic attraction part 11.

[0066] The present invention has been described in detail above. For those skilled in the art, based on the ideas of the embodiments of the present invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A battery, comprising a housing (2), a top cover disposed on the top of the housing (2), and a battery cell (1) disposed within the housing (2), characterized in that, It also includes a fixing structure, wherein the outer surface of the cell (1) is covered with an insulating film (3), and the insulating film (3) is fixedly connected to the outer shell (2) through the fixing structure to restrict the cell (1) from moving toward the top cover when the battery is inverted.

2. The battery according to claim 1, characterized in that, The battery cell (1) has two oppositely arranged sides, both of which are covered with the insulating film (3). The fixing structure includes a first engaging part (4) and a second engaging part (5); The first engaging part (4) is disposed on the insulating film (3), and the second engaging part (5) is disposed on the two opposite inner sides of the outer casing (2) and corresponds to the position of the first engaging part (4). The first engaging part (4) and the second engaging part (5) engage to restrict the cell (1) from moving towards the top cover of the battery when the battery is inverted.

3. The battery according to claim 2, characterized in that, The first engaging part (4) is provided with a first guide slope (401), and the second engaging part (5) is provided with a second guide slope (501) that cooperates with the first guide slope (401). When the battery cell (1) is installed inside the outer casing (2), the first guide slope (401) slides along the second guide slope (501) until the first guide slope (401) passes the second guide slope (501), and then the first engaging part (4) engages with the second engaging part (5).

4. The battery according to claim 3, characterized in that, The first engaging part (4) is fixed to the outer side of the insulating film (3) by adhesive bonding, and the second engaging part (5) is integrally formed on the inner side of the outer shell (2).

5. The battery according to claim 1, characterized in that, The battery cell (1) has two oppositely arranged sides, both of which are covered with the insulating film (3). The fixing structure includes a first magnetic suction part (6) and a second magnetic suction part (7). The first magnetic attraction part (6) is disposed on the insulating film (3), and the second magnetic attraction part (7) is disposed on the two opposite outer surfaces of the outer shell (2) and corresponds to the position of the first magnetic attraction part (6). The first magnetic attraction part (6) and the second magnetic attraction part (7) attract each other to restrict the cell (1) from moving towards the top cover of the battery when the battery is inverted.

6. The battery according to claim 5, characterized in that, The first magnetic part (6) is fixed to the outer surface of the insulating film (3) by bonding or embedding, and the second magnetic part (7) is fixed to the outer surface of the outer shell (2) by embedding.

7. The battery according to claim 1, characterized in that, The bottom of the battery cell (1) is covered with the insulating film (3). The fixing structure includes a first connecting plate (8) and a slot (9); The first connecting plate (8) is disposed on the insulating film (3), and the slot (9) is disposed on the inner bottom surface of the outer shell (2). The first connecting plate (8) is engaged in the slot (9) to restrict the cell (1) from moving towards the top cover of the battery when the battery is inverted.

8. The battery according to claim 1, characterized in that, The bottom of the battery cell (1) is covered with the insulating film (3). The fixing structure includes a third magnetic suction part (11) and a fourth magnetic suction part (12). The third magnetic suction part (11) is disposed on the insulating film (3) and abuts against the inner bottom wall of the outer shell (2); The fourth magnetic attraction part (12) is disposed on the outer bottom wall of the outer casing (2) and corresponds to the position of the third magnetic attraction part (11). The third magnetic attraction part (11) and the fourth magnetic attraction part (12) are attracted to each other to restrict the cell (1) from moving towards the top cover of the battery when the battery is inverted.

9. The battery according to claim 8, characterized in that, The fixing structure also includes a second connecting plate (10), which is located between the third magnetic suction part (11) and the insulating film (3). One surface of the second connecting plate (10) is connected to the insulating film (3), and the other surface of the second connecting plate (10) is connected to the third magnetic suction part (11).

10. The battery according to claim 9, characterized in that, The area of ​​the fourth magnetic attraction part (12) is larger than the area of ​​the third magnetic attraction part (11).

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