Shell of battery pack, battery pack and electric equipment

Abstract

The utility model discloses a shell of a battery pack, the battery pack and electric equipment. The shell of the battery pack comprises a first shell and a second shell, the first shell comprises a first shell body and a second shell body, the second shell body comprises a body and a sealing piece, the body and the sealing piece are an integrally-formed structural piece, the first shell body and the second shell body are fixedly connected, and the sealing piece is connected between the body and the first shell body in a sealed mode. The second shell is an integrally formed structural member, and structural sealant does not need to be arranged between the body and the sealing member, so that the working procedures can be reduced, and the assembly efficiency can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery technology field especially is related to a shell of battery pack, battery pack and electric equipment. BACKGROUND

[0002] In the related art, the shell of the battery pack is pasted with a foamed silica gel strip through a second shell flange edge, and the first shell is connected through a screw piece to compress the foamed silica gel strip to fill the assembly gap between the second shell and the first shell to achieve the purpose of waterproofing.

[0003] However, the existing shell of the battery pack also has significant defects: the second shell flange edge needs to cooperate with sealing glue to achieve better waterproof effect, in addition, in the gluing process, it is difficult to control the amount of glue, the glue curing time is long, the residual glue is difficult to clean, and the subsequent repair is difficult. UTILITY MODEL CONTENTS

[0004] The utility model aims at at least solving one of the technical problems existing in the prior art. To this end, the utility model provides a shell of a battery pack, which can reduce the process and improve the assembly efficiency.

[0005] The utility model further provides a battery pack.

[0006] The utility model further provides an electric equipment.

[0007] According to the shell of the battery pack of the utility model, the shell comprises: a first shell; a second shell, the second shell comprises: a body and a sealing piece, the body and the sealing piece are integrally formed structural members, the first shell and the second shell are fixedly connected, and the sealing piece is sealingly connected between the body and the first shell.

[0008] According to the shell of the battery pack of the utility model, the second shell is an integrally formed structural member, so that the body and the sealing piece do not need to be sealed with structural sealing glue, which can reduce the process and improve the assembly efficiency.

[0009] In some examples of the utility model, the body and the sealing piece are integrally injection molded structural members.

[0010] In some examples of the utility model, the shell of the battery pack further comprises: a fastening assembly connected to the first shell and the second shell to press the sealing piece between the first shell and the body.

[0011] In some examples of the utility model, the fastening assembly comprises: a first fastener and a second fastener, the second fastener is arranged on the body and / or the sealing element, and the first fastener is fixedly connected with the second fastener to press the sealing element between the first shell and the body.

[0012] In some examples of the utility model, the second fastener, the body and the sealing element are integrally injection molded structural members.

[0013] In some examples of the utility model, the body is a thermoplastic structural member.

[0014] In some examples of the utility model, the sealing element is an elastic structural member.

[0015] In some examples of the utility model, the first shell is provided with a via hole, the via hole is oppositely arranged with the second fastener, and the first fastener is fixedly connected with the second fastener by penetrating the via hole.

[0016] In some examples of the utility model, the first fastener is a screw member, the second fastener is a nut member, and the screw member is threadedly matched with the nut member by penetrating the via hole.

[0017] In some examples of the utility model, the first fastener comprises: a screw head and a screw column, the screw head is interference-fitted in the via hole, the screw column is connected with the screw head, and the screw column is fixedly connected with the second fastener.

[0018] In some examples of the utility model, the maximum outer diameter of the screw head is greater than the minimum hole diameter of the via hole.

[0019] In some examples of the utility model, the via hole is a plurality of via holes, and the plurality of via holes are arranged at intervals in the circumferential direction of the first shell.

[0020] In some examples of the utility model, the first shell has an end face and an inner surface, the body comprises a second matching part, and the sealing element comprises a second pressing part, the second pressing part is pressed between the inner surface and the second matching part in the second direction and / or the third direction, wherein the first direction is the height direction of the first shell, and the first direction, the second direction and the third direction are perpendicular to each other.

[0021] In some examples of the utility model, the body further comprises a first matching part, the sealing element further comprises a first pressing part, the second pressing part is connected with the first pressing part, the first pressing part is pressed between the end face and the first matching part or the first pressing part is pressed between the inner surface and the first matching part in the first direction.

[0022] In some examples of the present application, the shell of the battery pack further comprises: a fastening assembly, the first shell is provided with a through hole, the fastening assembly is arranged through the through hole and connected to the first shell and the second shell to press the sealing member between the first shell and the body, the second pressing part is provided with a protruding part protruding towards the first shell at both ends of the through hole in the first direction, and the protruding part is in abutting fit with the first shell.

[0023] In some examples of the present application, the first pressing part and the second pressing part are configured in an L-shaped structure.

[0024] According to the battery pack of the present application, the shell of the battery pack is provided.

[0025] According to the battery pack of the present application, the shell of the battery pack is provided.

[0026] The additional aspects and advantages of the present application will be partially given in the following description, partially will become obvious from the following description, or will be understood by the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0027] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:

[0028] Figure 1 is a structural schematic view of the shell of the battery pack according to the embodiment of the present application;

[0029] Figure 2 is an exploded view of the shell of the battery pack according to the embodiment of the present application;

[0030] Figure 3 is a structural schematic view of the second shell;

[0031] Figure 4 is a sectional view of the shell of the battery pack according to the embodiment of the present application;

[0032] Figure 5 is a partial enlarged view of the shell of the battery pack according to the embodiment of the present application.

[0033] REFERENCE NUMERALS:

[0034] 1, shell;

[0035] 10, first housing; 100, via hole; 101, end face; 102, inner surface; 20, second housing; 200, body; 201, sealing member; 202, second fastener; 203, first fitting part; 204, first pressing part; 205, second fitting part; 206, second pressing part; 207, protruding part; 30, first fastener; 300, screw head; 301, screw column. DETAILED DESCRIPTION

[0036] The embodiments of the utility model are described in detail below, and the embodiments described with reference to the drawings are exemplary, and the embodiments of the utility model are described in detail below.

[0037] The following will be described with reference to the drawings Figures 1-5 The housing 1 of the battery pack according to the embodiments of the utility model is described.

[0038] As shown in Figures 1-5 The housing 1 of the battery pack according to the embodiments of the utility model includes: a first housing 10, a second housing 20 and a fastening assembly. The first housing 10 is the main part of the housing 1 of the battery pack, which can mainly play the roles of protection, isolation, heat dissipation and electrical insulation. The second housing 20 can mainly play the roles of covering and sealing. The fastening assembly can mainly fasten and connect other components. The first housing 10 can be made of an aluminum extrusion middle frame plus an aluminum bottom welded together. The second housing 20 can be a double-color injection molding structure.

[0039] As shown in Figures 1-3 and Figure 5 The second housing 20 includes: a body 200 and a sealing member 201. The body 200 is the main part of the second housing 20. The sealing member 201 can play the role of sealing and mainly realize waterproofing of the battery pack. The fastening assembly is connected to the first housing 10 and the second housing 20. During the fastening process of the fastening assembly, the sealing member 201 can be pressed between the first housing 10 and the body 200.

[0040] The fastening assembly includes: a first fastener 30 and a second fastener 202. The first fastener 30 can be a screw member. The second fastener 202 can be a nut member. The screw member and the nut member can be fixed by threads, which is more firm and reliable. The body 200 and the sealing member 201 are an integrally formed structural member. Further, the body 200 and the sealing member 201 are an integrally injection molded structural member. Still further, the body 200, the sealing member 201 and the nut member are an integrally injection molded structural member. Moreover, the sealing member 201 is located between the body 200 and the first housing 10. The nut member is arranged on the body 200 and / or the sealing member 201.

[0041] Specifically, the body 200, the sealing piece 201 and the nut piece are integrally injection molded structural parts, at this time the second shell 20 is an integral structure, the structure is more stable and firm, convenient for installation and setting, and only one processing mold is needed, which is convenient for production and manufacturing. The sealing piece 201 is located on the side of the body 200 adjacent to the first shell 10, and the sealing piece 201 is located on the body 200 and adjacent to the side of the first shell 10. The entire body 200 is surrounded by the sealing piece 201 at the position of assembly contact with the first shell 10. The nut piece is arranged on the body 200 and / or the sealing piece 201. The body 200 and / or the sealing piece 201 are provided with the nut piece.

[0042] It should be noted that the body 200, the sealing piece 201 and the nut piece are double-color integrally injection molded. Hard glue mold and soft glue mold are designed on the injection molding machine. First, the hard glue mold is injection molded. After the body 200 is injection molded, it is rotated by 180 degrees and then the soft glue mold is injection molded. Thus, the double-color injection molding of the body 200 and the sealing piece 201 is realized. The nut piece of the required specification is embedded in the mold during the injection molding of the body 200. Thus, the body 200, the sealing piece 201 and the nut piece form an integral whole during the double-color injection molding.

[0043] As shown in Figures 1-2 , Figures 4-5 , the screw piece is arranged through the first shell 10, and the screw piece is threadedly connected with the nut piece, so as to be fixedly connected. The first shell 10 and the second shell 20 are fixedly connected, and the sealing piece 201 is sealingly connected between the first shell 10 and the body 200. The screw piece is arranged through the first shell 10 to realize the fixed connection of the screw piece and the nut piece, so as to realize the pressing of the sealing piece 201 between the first shell 10 and the body 200. The gap between the first shell 10 and the second shell 20 can be filled by the sealing piece 201. At this time, better waterproof effect can be realized. When the battery is abnormal, the screw piece is only taken down, and then the first shell 10 and the second shell 20 are separated to detect the repaired battery. The efficiency of repair and the utilization rate of the battery pack can be improved.

[0044] Thus, the second shell 20 is an integrally injection molded structural part. At this time, the body 200 and the sealing piece 201 do not need to be sealed by structural sealant. In this way, the process can be reduced and the assembly efficiency can be improved. In addition, the screw piece is arranged through the first shell 10 to press the sealing piece 201 between the first shell 10 and the body 200. At this time, better waterproof effect can be realized. When the battery is abnormal, the screw piece is only taken down, and then the first shell 10 and the second shell 20 are separated to detect the repaired battery. The efficiency of repair and the utilization rate of the battery pack can be improved.

[0045] Specifically, as shown in Figures 1-3 and Figure 5As shown, the body 200 is a thermoplastic structural member, for example, a plastic alloy structural member, and the sealing member 201 is an elastic structural member, for example, a rubber member. The plastic alloy structural member has strong impact resistance, anti-aging, weather resistance, and can exhibit excellent mechanical properties. When the body 200 is set as a plastic alloy structural member, the body 200 is more in line with the actual working conditions. The rubber member has high toughness, high fatigue strength, and high wear resistance, can meet the cooperation strength throughout the life cycle, and keeps the waterproof function from failing. When the sealing member 201 is set as a rubber member, the sealing member 201 is more in line with the actual working conditions, and can better achieve the waterproof effect of the battery pack.

[0046] As shown in Figure 4 and Figure 5 The first shell 10 is provided with a through hole 100, and the through hole 100 is arranged opposite to the second fastener 202. The first fastener 30 is fixedly connected with the second fastener 202 through the through hole 100. In combination with the above, the first fastener 30 can be a screw member, and the second fastener 202 can be a nut member. Therefore, the through hole 100 can be a hole through which the screw member passes, and the screw member is threadedly connected with the nut member through the through hole 100. Specifically, the through hole 100 can be used to fixedly install the screw member. The through hole 100 is arranged opposite to the nut member, and the screw member is fixedly connected with the nut member through the through hole 100. The through hole 100 and the nut member are arranged opposite to each other. The screw member is fixedly connected with the nut member by passing through the through hole 100, so as to press the sealing member 201 between the first shell 10 and the body 200. The sealing member 201 can fill the gap between the first shell 10 and the second shell 20, so as to achieve better waterproof effect. In addition, when the battery is abnormal, the screw member can be removed, and the first shell 10 and the second shell 20 can be separated to detect and repair the battery. The efficiency of repair and the utilization rate of the battery pack can be improved. The upper and lower ends of the through hole 100 are provided with effective waterproof layers, so as to achieve three-dimensional waterproof in a true sense in structure.

[0047] In addition, as shown in Figure 5As shown, the first fastener 30 comprises a screw head 300 and a screw column 301, the screw head 300 is interference-fitted in the through hole 100, the screw column 301 is connected with the screw head 300, and the screw column 301 is fixedly connected with the nut member. The screw head 300 and the screw column 301 are both parts of the screw member, the screw head 300 is mainly used to receive a tool to rotate the screw member, the screw column 301 can mainly assemble the product and support other parts, the screw head 300 is interference-fitted in the through hole 100, and the sealing member 201 is extruded during the fastening of the screw member, so as to fill the gap between the first shell 10 and the second shell 20, and a better waterproof effect can be achieved, the screw column 301 is connected with the screw head 300, and the screw column 301 is fixedly connected with the nut member, one end of the screw column 301 is connected with the screw head 300 to form the screw member, and the other end is fixedly connected with the nut member, so as to press the sealing member 201 between the first shell 10 and the body 200, and the sealing member 201 can fill the gap between the first shell 10 and the second shell 20, and a better waterproof effect can be achieved.

[0048] Optionally, as shown in Figure 4 and Figure 5 , the maximum outer diameter of the screw head 300 is greater than the minimum hole diameter of the through hole 100. At this time, the screw head 300 can be interference-fitted in the through hole 100, the sealing member 201 is extruded during the fastening of the screw member, so as to fill the gap between the first shell 10 and the second shell 20, so that the first shell 10 and the second shell 20 are more precisely fitted, thereby achieving a good sealing effect and realizing the waterproof of the battery pack.

[0049] Of course, as shown in Figure 4 and Figure 5 , the through hole 100 is a plurality of through holes 100, and the plurality of through holes 100 are arranged at intervals in the circumferential direction of the first shell 10. The through hole 100 is provided in a plurality of through holes 100, and the plurality of through holes 100 are arranged at intervals in the circumferential direction of the first shell 10, so that interference between the plurality of through holes 100 can be avoided, and the distribution range of the plurality of through holes 100 can be wider, and the waterproof effect of the shell 1 of the battery pack can be enhanced to a certain extent.

[0050] Further, as shown in Figure 5As shown, the first shell 10 has an end face 101 and an inner surface 102, the body 200 comprises a first fitting part 203, and the sealing element 201 comprises a first pressing part 204, wherein, in the first direction, the first pressing part 204 is pressed between the end face 101 and the first fitting part 203, or the first pressing part 204 is pressed between the inner surface 102 and the first fitting part 203, wherein the first direction is the height direction of the first shell 10. The first shell 10 is provided with the end face 101 and the inner surface 102, the body 200 comprises the first fitting part 203, the body 200 is provided with the first fitting part 203, the first fitting part 203 can play a fitting and mounting role, the sealing element 201 comprises the first pressing part 204, the sealing element 201 is provided with the first pressing part 204, the first pressing part 204 can mainly play a pressing role, in the first direction, the first pressing part 204 is pressed between the end face 101 and the first fitting part 203, so that the end face 101 and the first fitting part 203 can be sealed in the first direction. Of course, the end face 101 and the first fitting part 203 can also be directly attached, and at this time, the first pressing part 204 can be pressed between the inner surface 102 and the first fitting part 203, so that the inner surface 102 and the first fitting part 203 can be sealed in the first direction. In this way, a better waterproof effect can be achieved, wherein the first direction refers to the height direction of the first shell 10.

[0051] In addition, as shown, Figure 5 The body 200 further comprises a second fitting part 205, and the sealing element 201 further comprises a second pressing part 206, the second pressing part 206 is connected with the first pressing part 204, and a nut element is arranged inside the second fitting part 205 and the second pressing part 206. In the second direction or the third direction, the second pressing part 206 is pressed between the inner surface 102 and the second fitting part 205, wherein the first direction, the second direction and the third direction are perpendicular to each other. The body 200 further comprises the second fitting part 205, the body 200 is provided with the second fitting part 205, the second fitting part 205 can play a fitting and mounting role, the sealing element 201 further comprises the second pressing part 206, the sealing element 201 is provided with the second pressing part 206, the second pressing part 206 can mainly play a pressing role, and the nut element is arranged on the second fitting part 205 and the second pressing part 206. The nut element is arranged inside the second fitting part 205 and the second pressing part 206, and in the second direction and the third direction, the second pressing part 206 is pressed between the inner surface 102 and the second fitting part 205. At this time, a better waterproof effect can be achieved, wherein the first direction, the second direction and the third direction are perpendicular to each other, so that the shell 1 of the battery pack can realize three-dimensional waterproofing in a true sense from the structure.

[0052] It should be noted that, as Figure 5As shown, the first shell 10 is provided with a through hole 100, and the second compression part 206 is provided with a protruding part 207 protruding towards the first shell 10 at both ends in the first direction of the through hole 100, and the protruding part 207 is in abutting fit with the first shell 10. The second compression part 206 is provided with a protruding part 207 protruding towards the first shell 10 at both ends in the first direction of the through hole 100, and the protruding part 207 is in abutting fit with the first shell 10. The protruding part 207 can be compressed during the cooperation and fastening of the first fastener 30 and the second fastener 202, so as to fill the cooperation gap between the first shell 10 and the second shell 20, and the protruding part 207 can strengthen the sealing performance of the cooperation gap between the first shell 10 and the second shell 20. In addition, the sealing performance at the through hole 100 can be ensured, so that the problem of small gap and difficult assembly can be solved, the sealing effect after assembly is ensured, the assembly efficiency is improved, and the waterproof requirement and repair requirement of the battery pack are met.

[0053] In addition, as shown, Figure 5 As shown, the first compression part 204 and the second compression part 206 are configured in an L-shaped structure. In the first direction, the first compression part 204 is compressed between the end face 101 and the first cooperation part 203, and in the second direction and the third direction, the second compression part 206 is compressed between the inner surface 102 and the second cooperation part 205. The first compression part 204 and the second compression part 206 are configured in an L-shaped structure, so that better waterproof effect can be achieved, and the shell 1 of the battery pack can be truly three-dimensionally waterproofed in structure.

[0054] In some embodiments, the shell 1 includes a first shell 10 and a second shell 20, and the second shell 20 includes a body 200 and a sealing part 201, the body 200 and the sealing part 201 are integrally formed structural parts, and the sealing part 201 is located between the body 200 and the first shell 10. The first shell 10 and the second shell 20 are fixedly connected, and the sealing part 201 is sealingly connected between the body 200 and the first shell 10, so that the body 200 and the sealing part 201 can be sealed without structural sealant, which can reduce the process and improve the assembly efficiency.

[0055] According to the battery pack of the utility model embodiment, the shell 1 of the battery pack is described above.

[0056] According to the utility model embodiment, the electric equipment includes the battery pack described in the above embodiments.

[0057] In the description of the utility model, need understanding is, the term "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and so on the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the drawing, just is for the convenience of describing the utility model and simplifying the description, and not indicate or imply the device or element indicated must have a particular orientation, with a particular orientation configuration and operation, therefore can not be understood as the restriction of the utility model.

[0058] In the description of the utility model, "first feature", "second feature" can include one or more features.In the description of the utility model, "multiple" means two or more than two.In the description of the utility model, the first feature is "on" or "below" the second feature can include that the first and second features are in direct contact, or the first and second features are not in direct contact but are in contact through another feature between them.In the description of the utility model, the first feature is "on", "above" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the first feature is horizontally higher than the second feature.

[0059] In the description of the specification, the description of the reference terms "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model.In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example.

[0060] Although the embodiments of the utility model have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the utility model, and the scope of the utility model is defined by the claims and its equivalents.

Claims

1. A battery pack housing (1), characterized in that: include: A first housing (10); A second shell (20), the second shell (20) comprising: a body (200) and a sealing member (201), the body (200) and the sealing member (201) being integrally formed structural members, the first shell (10) and the second shell (20) being fixedly connected, and the sealing member (201) being sealingly connected between the body (200) and the first shell (10).

2. The battery pack housing (1) according to claim 1, characterized in that: The body (200) and the sealing member (201) are integrally injection-molded structural members.

3. The battery pack housing (1) according to claim 1, characterized in that: Also includes: A fastening assembly is connected to the first shell (10) and the second shell (20) so that the sealing member (201) is compressed between the first shell (10) and the body (200).

4. The battery pack housing (1) according to claim 3, characterized in that: The fastening assembly comprises: a first fastener (30) and a second fastener (202), wherein the second fastener (202) is arranged on the body (200) and / or the sealing member (201), and the first fastener (30) and the second fastener (202) are fixedly connected to press the sealing member (201) between the first shell (10) and the body (200).

5. The battery pack housing (1) according to claim 4, characterized in that: The second fastener (202), the body (200), and the sealing member (201) are integrally formed structural members.

6. The battery pack housing (1) according to claim 1, characterized in that: The body (200) is a thermoplastic structural component.

7. The battery pack housing (1) according to claim 1, characterized in that: The sealing component (201) is an elastic structural component.

8. The battery pack housing (1) according to claim 4, characterized in that: The first shell (10) is provided with a through hole (100), the through hole (100) is arranged opposite to the second fastener (202), and the first fastener (30) passes through the through hole (100) and is fixedly connected to the second fastener (202).

9. The battery pack housing (1) according to claim 8, characterized in that: The first fastener (30) is a screw, and the second fastener (202) is a nut. The screw passes through the through hole (100) and is threadably engaged with the nut.

10. The battery pack housing (1) according to claim 9, characterized in that: The first fastener (30) comprises a screw head (300) and a screw column (301), the screw head (300) is interference-fitted in the through hole (100), the screw column (301) is connected to the screw head (300), and the screw column (301) is fixedly connected to the second fastener (202).

11. The battery pack housing (1) according to claim 10, characterized in that: The maximum outer diameter of the screw head (300) is greater than the minimum hole diameter of the through hole (100).

12. The battery pack housing (1) according to claim 8, characterized in that: There are a plurality of through holes (100), and the plurality of through holes (100) are arranged at intervals in the circumferential direction of the first shell (10).

13. The battery pack housing (1) according to claim 1, characterized in that: The first shell (10) has an end surface (101) and an inner surface (102), the main body (200) includes: a second matching portion (205), and the sealing member (201) includes: a second pressing portion (206), in the second direction and / or the third direction, the second pressing portion (206) is pressed between the inner surface (102) and the second matching portion (205), wherein the first direction is the height direction of the first shell (10), and the first direction, the second direction and the third direction are perpendicular to each other.

14. The battery pack housing (1) according to claim 13, characterized in that: The body (200) further includes: a first fitting portion (203); the sealing member (201) further includes: a first pressing portion (204); the second pressing portion (206) is connected to the first pressing portion (204); in the first direction, the first pressing portion (204) is pressed between the end surface (101) and the first fitting portion (203), or the first pressing portion (204) is pressed between the inner surface (102) and the first fitting portion (203).

15. The battery pack housing (1) according to claim 13, characterized in that: Also includes: A fastening assembly, wherein the first shell (10) is provided with a through hole (100), the fastening assembly passes through the through hole (100) and is connected to the first shell (10) and the second shell (20) so that the sealing member (201) is pressed between the first shell (10) and the body (200), and the second pressing portion (206) is provided with protrusions (207) protruding toward the first shell (10) at both ends of the through hole (100) along the first direction, and the protrusions (207) are in abutment with the first shell (10).

16. The battery pack housing (1) according to claim 14, characterized in that: The first pressing portion (204) and the second pressing portion (206) are configured into an L-shaped structure.

17. A battery pack, characterized in that: include: The housing (1) of the battery pack according to any one of claims 1 to 16.

18. An electrical device, characterized in that: include: The battery pack according to claim 17.

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