Battery pack and electric equipment

Abstract

The utility model relates to the technical field of batteries, and discloses a battery pack and electric equipment, and the battery pack comprises a box body, a battery and a glue blocking piece, the box body comprises a frame body and a bottom plate, and the frame body is provided with a first inner wall surface and a second inner wall surface; the battery is provided with a first outer wall surface and a second outer wall surface, and a glue accommodating space is formed between the first outer wall surface and the first inner wall surface; the glue blocking piece comprises an elastic body, the elastic body is provided with a bottom face, a first side face, a second side face and a third side face, the bottom face is attached to the bottom plate, the first side face is attached to the first inner wall face, the second side face is attached to the second inner wall face, and the third side face is attached to the second outer wall face; according to the battery pack provided by the utility model, the bottom surface, the first side surface, the second side surface and the third side surface of the elastic body are respectively attached to the bottom plate, the first inner wall surface, the second inner wall surface and the second outer wall surface, so that glue can be prevented from being accumulated on corner areas of the box body during pouring, and the glue can be prevented from overflowing in the corner areas.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a battery pack and an electrical device. Background Art

[0002] The CTP solution (CTP, i.e., Cell To PACK) refers to a battery assembly solution in which the battery is directly integrated into the box body, thus eliminating the intermediate module structure. In the CTP solution, in the prior art, a colloid is poured between the outer wall of the colloid-sealed battery and the inner wall of the box body to fix the battery in the box body. However, when pouring the colloid, due to the large space between the outer wall of the battery and the inner wall of the box body in the corner area of the box body, a large amount of colloid will accumulate in this corner area and overflow glue will be generated in this corner area. The overflow glue will lead to an increase in the amount of glue used and it is difficult to determine the fixed value of the amount of glue used, which is not conducive to the implementation of the mass production automatic glue injection process and will also result in poor adhesiveness of the colloid. Summary of the Utility Model

[0003] Aiming to solve at least one of the technical problems existing in the prior art, the utility model provides a battery pack and an electrical device including the battery pack. The battery pack helps to determine the fixed value of the amount of glue used during the pouring of the colloid, which is beneficial to the implementation of the mass production automatic glue injection process and to ensure the adhesiveness of the colloid.

[0004] To achieve the above object, the utility model provides a battery pack, which includes a box body, a battery and a glue-blocking member; the box body includes a frame body and a bottom plate, and the frame body and the bottom plate enclose to form a receiving groove. The frame body has a first inner wall surface and a second inner wall surface, and one end of the first inner wall surface is connected to the second inner wall surface; the battery is arranged in the receiving groove, and the battery has a first outer wall surface and a second outer wall surface. A glue-containing space is formed between the first outer wall surface and the first inner wall surface which are opposite to each other; one end of the second outer wall surface is connected to the first outer wall surface, and the second outer wall surface is opposite to the second inner wall surface; the glue-blocking member is arranged in the receiving groove, and the glue-blocking member includes an elastic body. The elastic body has a bottom surface, a first side surface, a second side surface and a third side surface. The first side surface, the second side surface and the third side surface are all connected to the bottom surface. The second side surface and the third side surface are respectively connected to both ends of the first side surface, and the second side surface and the third side surface are opposite to each other. The bottom surface is attached to the bottom plate, the first side surface is attached to the first inner wall surface, the second side surface is attached to the second inner wall surface, and the third side surface is attached to the second outer wall surface.

[0005] In some embodiments, the distance between the second inner wall surface and the second outer wall surface is a mm, and when the elastomer is in its original length state, the distance between the second side surface and the third side surface is b mm, satisfying: a < b.

[0006] In some embodiments, 0.6 ≤ a / b ≤ 0.8.

[0007] In some embodiments, the rubber blocking member further includes a support body, a first cavity is formed inside the elastomer, and the support body is disposed in the first cavity of the elastomer.

[0008] In some embodiments, one end of the first cavity away from the bottom surface is open to form a first opening.

[0009] In some embodiments, a second cavity is formed inside the support body.

[0010] In some embodiments, the battery pack further includes a sealing member, and the sealing member is connected to the first outer wall surface and is located within the glue-containing space.

[0011] In some embodiments, the battery pack further includes a first limiting member, the first limiting member is connected to the first inner wall surface, the elastomer is located between the bottom plate and the first limiting member, and one end of the elastomer away from the bottom plate abuts against the first limiting member.

[0012] In some embodiments, the battery pack further includes a second limiting member, the second limiting member is connected to the second inner wall surface, the elastomer is located between the bottom plate and the second limiting member, and one end of the elastomer away from the bottom plate abuts against the second limiting member.

[0013] The present utility model further provides an electrical device, and the electrical device includes the battery pack described in any one of the above.

[0014] Compared with the prior art, the beneficial effect of a battery pack according to an embodiment of the present utility model is that: by respectively attaching the bottom surface, the first side surface, the second side surface, and the third side surface of the elastomer to the bottom plate, the first inner wall surface, the second inner wall surface, and the second outer wall surface, the elastomer can be stuffed into the corner area formed by the first inner wall surface and the second inner wall surface of the box body, so as to prevent the glue from accumulating in the corner area during pouring, thereby preventing the glue from overflowing in the corner area, and further helping to determine the fixed value of the amount of glue used during pouring, which is beneficial to the implementation of the mass production automatic glue injection process and to ensure the adhesiveness of the glue. Description of the Drawings

[0015] Figure 1 is a schematic structural diagram of a battery pack provided by an embodiment of the present utility model;

[0016] Figure 2 is Figure 1 An enlarged schematic view of part A;

[0017] Figure 3 is Figure 2 A schematic view after omitting the rubber baffle;

[0018] Figure 4 is a schematic view of the structure of the box body provided by an embodiment of the present invention;

[0019] Figure 5 is a schematic view of the structure of the rubber baffle provided by an embodiment of the present invention;

[0020] Figure 6 is a schematic view of the structure of the elastic body provided by an embodiment of the present invention;

[0021] Figure 7 is a top view of the elastic body in its original length state provided by an embodiment of the present invention.

[0022] In the figure, 1, box body; 11, frame body; 12, bottom plate; 111, first inner wall surface; 112, second inner wall surface; 113, third inner wall surface; 114, fourth inner wall surface; 121, receiving groove; 122, glue receiving space;

[0023] 2, battery; 21, first outer wall surface; 22, second outer wall surface;

[0024] 3, rubber baffle; 31, elastic body; 32, support body; 310, protrusion; 311, bottom surface; 312, first side surface; 313, second side surface; 314, third side surface; 315, fourth side surface; 316, first cavity; 317, first opening; 321, second cavity; 322, second opening;

[0025] 4, seal;

[0026] 5, first limiting member;

[0027] 6, second limiting member. Detailed implementation manners

[0028] The following combines the drawings and embodiments to further describe in detail the specific implementation manners of the present invention. The following embodiments are used to illustrate the present invention, but are not used to limit the scope of the present invention.

[0029] 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", etc. is based on the orientation or positional relationship shown in the drawings. It 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. Therefore, it should not be construed as a limitation to the present utility model.

[0030] 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 one or more of such features.

[0031] In the present utility model, unless otherwise clearly defined and limited, the terms such as "mounted", "connected", "connected to", "fixed" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. 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.

[0032] In the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "over" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0033] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by those skilled in the technical field to which this application belongs; the terms used in the description of the application in this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the description and claims of this application and the above drawings are intended to cover non-exclusive inclusion.

[0034] References to "embodiments" in this application mean that the specific features, structures, or characteristics described in connection with the embodiments can be included in at least one embodiment of this application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments.

[0035] As Figures 1-7 shown, a preferred battery pack according to an embodiment of the present utility model includes a box body 1, a battery 2, and a glue-blocking member 3; the box body 1 includes a frame body 11 and a bottom plate 12, and an accommodation groove 121 is formed by enclosing the frame body 11 and the bottom plate 12. The frame body 11 has a first inner wall surface 111 and a second inner wall surface 112, and one end of the first inner wall surface 111 is connected to the second inner wall surface 112; the battery 2 is disposed in the accommodation groove 121, the battery 2 has a first outer wall surface 21 and a second outer wall surface 22, a glue-containing space 122 is formed between the first outer wall surface 21 and the first inner wall surface 111 and is opposite to the first inner wall surface 111, one end of the second outer wall surface 22 is connected to the first outer wall surface 21, and the second outer wall surface 22 is opposite to the second inner wall surface 112; the glue-blocking member 3 is disposed in the accommodation groove 121, the glue-blocking member 3 includes an elastic body 31, the elastic body 31 has a bottom surface 311, a first side surface 312, a second side surface 313, and a third side surface 314. The first side surface 312, the second side surface 313, and the third side surface 314 are all connected to the bottom surface 311, the second side surface 313 and the third side surface 314 are respectively connected to both ends of the first side surface 312, and the second side surface 313 and the third side surface 314 are opposite to each other. The bottom surface 311 is attached to the bottom plate 12, the first side surface 312 is attached to the first inner wall surface 111, the second side surface 313 is attached to the second inner wall surface 112, and the third side surface 314 is attached to the second outer wall surface 22.

[0036] Based on this technical solution, by attaching the bottom surface 311, the first side surface 312, the second side surface 313, and the third side surface 314 of the elastic body 31 to the bottom plate 12, the first inner wall surface 111, the second inner wall surface 112, and the second outer wall surface 22 respectively, the elastic body 31 can be stuffed into the corner area formed by the first inner wall surface 111 and the second inner wall surface 112 of the box body 1 to prevent the colloid from accumulating in this corner area during pouring, thereby preventing the colloid from overflowing in this corner area, and further helping to determine the fixed value of the amount of glue used during pouring, which is beneficial to the implementation of the mass production automatic glue application process and ensures the adhesiveness of the colloid.

[0037] Optionally, the elastic body 31 can be made of elastic materials such as polyurethane, rubber, silica gel, ethylene-vinyl acetate copolymer, etc.

[0038] In this embodiment, the material of the elastic body 31 is a rubber material.

[0039] The box body 1 further has a third inner wall surface 113 and a fourth inner wall surface 114. The third inner wall surface 113 is connected to one end of the second inner wall surface 112 away from the first inner wall surface 111 and is disposed opposite to the first inner wall surface 111. Two ends of the fourth inner wall surface 114 are respectively connected to the third inner wall surface 113 and the first inner wall surface 111. The rubber blocking member 3 further has a fourth side surface 315. Two ends of the fourth side surface 315 are respectively connected to the second side surface 313 and the fourth side surface 315.

[0040] Refer to Figure 2 , Figure 3 and Figure 7 , the distance between the second inner wall surface 112 and the second outer wall surface 22 is am m. When the elastomer 31 is in the original length state, the distance between the second side surface 313 and the third side surface 314 is bm m, satisfying: a < b. Adopting a < b can enable the elastomer 31 to be installed between the second inner wall surface 112 and the second outer wall surface 22 in an interference fit manner, so that the elastomer 31 can be compressed and deformed elastically by the second inner wall surface 112 and the second outer wall surface 22. This elastic deformation can enable the elastomer 31 to adapt to an imperfectly flat joint surface and fill the tiny gaps between the joint surfaces, so that the second side surface 313 and the second inner wall surface 112 are more closely attached and the third side surface 314 and the second outer wall surface 22 are more closely attached. Furthermore, the sealing effect of the elastomer 31 between the second inner wall surface 112 and the second outer wall surface 22 can be improved, which helps to prevent the leakage of the colloid. Since the first side surface 312 is attached to the first inner wall surface 111 and a glue-containing space 122 is formed between the first outer wall surface 21 and the first inner wall surface 111, part of the elastomer 31 faces the glue-containing space 122 and serves as the side wall of the glue-containing space 122. When the second inner wall surface 112 and the second outer wall surface 22 compress and deform the elastomer 31, the part of the elastomer 31 serving as the side wall of the glue-containing space 122 will protrude into the glue-containing space 122 and form a protrusion 310. This protrusion 310 can increase the contact area between the elastomer 31 and the battery 2, which helps to improve the sealing performance of the elastomer 31 between the battery 2 and the frame body 11.

[0041] It should be noted that the state of the elastomer 31 when not compressed is called the original length state. In this state, the elastomer 31 maintains its original length or shape and is not affected by external forces or internal stresses. When an external force acts on the elastomer 31, it will deform, but once the external force disappears, the elastomer 31 can return to its original length state, which is a basic characteristic of the elastomer 31.

[0042] 0.6 ≤ a / b ≤ 0.8. When the elastomer 31 is installed between the second inner wall surface 112 and the second outer wall surface 22, a smaller compression amount of the elastomer 31 will result in a poor sealing effect between the elastomer 31 and the second inner wall surface 112 and the second outer wall surface 22, while a larger compression amount of the elastomer 31 may cause damage to the elastomer 31; adopting 0.6 ≤ a / b ≤ 0.8 can not only enable the elastomer 31 to have a good sealing effect between the second inner wall surface 112 and the second outer wall surface 22, but also avoid damage to the elastomer 31.

[0043] Optionally, a / b can be any value that satisfies 0.6 ≤ a / b ≤ 0.8, such as 0.6, 0.61, 0.62, 0.63, 0.64, 0.65, 0.66, 0.67, 0.68, 0.69, 0.71, 0.72, 0.73, 0.74, 0.75, 0.76, 0.77, 0.78, 0.79, 0.8, etc., and no limitation is made here.

[0044] Preferably, a / b = 0.7.

[0045] Next, the technical solutions provided by the present application are evaluated for performance in combination with specific embodiments.

[0046] In the following examples and comparative examples provided in the table, the material of the elastomer is rubber. Except for the different ratios of a / b, other conditions are the same. Among them, for the glue-blocking sealing performance test, after installing the elastic member and pouring glue, the actual glue consumption is compared with the reference value. If (glue consumption - reference value) / reference value is not less than 5%, it is determined that the sealing performance test passes, otherwise it fails; for the resilience test of the elastomer, after installing the elastic member and pouring glue, after one month, disassemble and assemble, disassemble the elastomer, and after 3 hours, measure the thickness of multiple regions of the elastomer. If (maximum thickness - minimum thickness) / minimum thickness is not less than 10%, it is determined that the resilience test passes, otherwise it fails.

[0047]

[0048]

[0049] By analyzing the above table, when 0.6 ≤ a / b ≤ 0.8, both the glue-blocking sealing performance test and the resilience test of the elastomer pass; when a / b < 0.6, the resilience test fails; when 0.8 < a / b, the glue-blocking sealing performance test fails.

[0050] Refer to Figure 2 、 Figure 3 and Figures 5-7, the glue-blocking member 3 further includes a support body 32. A first cavity 316 is formed inside the elastic body 31, and the support body 32 is disposed inside the first cavity 316 of the elastic body 31. By disposing the support body 32 inside the first cavity 316, the support body 32 can support the elastic body 31 to enhance the structural strength of the glue-blocking member 3, thereby enhancing the stability and compressive resistance of the glue-blocking member 3, which helps the glue-blocking member 3 better prevent glue overflow in the corner area of the box body 1.

[0051] One end of the first cavity 316 away from the bottom surface 311 is open to form a first opening 317. The first opening 317 is adopted to facilitate the installation of the support body 32 into the first cavity 316, which is convenient for the assembly between the support body 32 and the elastic body 31; at the same time, the first opening 317 can also play an anti-misassembly role, facilitating the distinction between the top and bottom of the glue-blocking member 3 and facilitating the rapid assembly between the glue-blocking member 3 and the box body 1.

[0052] A second cavity 321 is formed inside the support body 32. The second cavity 321 can reduce the weight of the support body 32 and save the material usage of the support body 32.

[0053] One end of the second cavity 321 away from the bottom surface 311 is open to form a second opening 322; the second opening 322 can play an anti-misassembly role, facilitating the distinction between the top and bottom of the support body 32.

[0054] The battery pack further includes a sealing member 4, and the sealing member 4 is connected to the first outer wall surface 21 and is located inside the glue-containing space 122. The sealing member 4 can play an isolating role between the battery 2 and the glue, preventing the glue in the glue-containing space 122 from flowing onto the battery 2, thereby avoiding the pollution of the battery 2 by the glue.

[0055] Optionally, the material of the sealing member 4 can be any material such as plastic, polyurethane, rubber, silica gel, ethylene-vinyl acetate copolymer, foam, etc. that can play an isolating role between the battery 2 and the glue, and is not limited herein.

[0056] In this embodiment, the material of the sealing member 4 is foam material.

[0057] The battery pack further includes a first limiting member 5, and the first limiting member 5 is connected to the first inner wall surface 111. The elastic body 31 is located between the bottom plate 12 and the first limiting member 5, and one end of the elastic body 31 away from the bottom plate 12 abuts against the first limiting member 5. By adopting the first limiting member 5 and making the first limiting member 5 abut against the elastic body 31, the first limiting member 5 can limit the glue-blocking member 3, so that the first limiting member 5 and the bottom plate 12 compress the elastic body 31 and cause the elastic body 31 to undergo elastic deformation. This elastic deformation can make the second side surface 313 and the second inner wall surface 112 fit more closely, improving the sealing effect between the bottom surface 311 of the elastic body 31 and the bottom plate 12 of the box body 1.

[0058] The battery pack further includes a second limiting member 6, the second limiting member 6 is connected to the second inner wall surface 112, the rubber blocking member 3 is located between the bottom plate 12 and the second limiting member 6, and one end of the rubber blocking member 3 away from the bottom plate 12 abuts against the second limiting member 6. Adopting the second limiting member 6 and making the second limiting member 6 abut against the elastic body 31 helps to further improve the sealing effect between the bottom surface 311 of the elastic body 31 and the bottom plate 12 of the box body 1.

[0059] The present utility model further provides an electrical equipment, and the electrical equipment includes the battery pack of any one of the above.

[0060] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present utility model, several improvements and substitutions can still be made, and these improvements and substitutions should also be regarded as the protection scope of the present utility model.

Claims

1. A battery pack, characterized in that: include: A box body (1) comprises a frame body (11) and a bottom plate (12), wherein the frame body (11) and the bottom plate (12) enclose a receiving groove (121), the frame body (11) has a first inner wall surface (111) and a second inner wall surface (112), and one end of the first inner wall surface (111) is connected to the second inner wall surface (112); A battery (2) is arranged in the containing groove (121), the battery (2) having a first outer wall surface (21) and a second outer wall surface (22), the first outer wall surface (21) and the first inner wall surface (111) being opposite to each other and forming a glue containing space (122) between the first outer wall surface (21) and the first inner wall surface (111), one end of the second outer wall surface (22) being connected to the first outer wall surface (21), and the second outer wall surface (22) and the second inner wall surface (112) being opposite to each other; The rubber stopper (3) is arranged in the accommodating groove (121), and the rubber stopper (3) comprises an elastic body (31), and the elastic body (31) has a bottom surface (311), a first side surface (312), a second side surface (313) and a third side surface (314); the first side surface (312), the second side surface (313) and the third side surface (314) are all connected to the bottom surface (311); the second side surface (313) and the third side surface (314) are respectively connected to the two ends of the first side surface (312), and the second side surface (313) and the third side surface (314) are opposite to each other; the bottom surface (311) and the bottom plate (12) are in contact with each other; the first side surface (312) and the first inner wall surface (111) are in contact with each other; the second side surface (313) and the second inner wall surface (112) are in contact with each other; and the third side surface (314) and the second outer wall surface (22) are in contact with each other.

2. The battery pack according to claim 1, characterized in that: The distance between the second inner wall surface (112) and the second outer wall surface (22) is amm, and when the elastic body (31) is in the original length state, the distance between the second side surface (313) and the third side surface (314) is bmm, satisfying: a<b.

3. The battery pack according to claim 2, characterized in that: 0.6≤a / b≤0.

8.

4. The battery pack according to claim 1, characterized in that: The rubber stopper (3) further comprises a support body (32), a first cavity (316) is provided inside the elastic body (31), and the support body (32) is arranged in the first cavity (316) of the elastic body (31).

5. The battery pack according to claim 4, characterized in that: One end of the first cavity (316) away from the bottom surface (311) is open to form a first opening (317).

6. The battery pack according to claim 4, characterized in that: A second cavity (321) is provided inside the support body (32).

7. The battery pack according to claim 1, characterized in that: It also includes a sealing member (4), which is connected to the first outer wall surface (21) and is located in the glue containing space (122).

8. The battery pack according to any one of claims 1 to 7, characterized in that: It also comprises a first limiting member (5), the first limiting member (5) being connected to the first inner wall surface (111), the elastic body (31) being located between the bottom plate (12) and the first limiting member (5), and one end of the elastic body (31) away from the bottom plate (12) being in contact with the first limiting member (5).

9. The battery pack according to claim 8, characterized in that: It also includes a second limiting member (6), the second limiting member (6) being connected to the second inner wall surface (112), the elastic body (31) being located between the bottom plate (12) and the second limiting member (6), and one end of the elastic body (31) away from the bottom plate (12) being in contact with the second limiting member (6).

10. An electrical device, characterized in that: Comprising a battery pack according to any one of claims 1-9.

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