Waterproof battery pack

Abstract

The utility model provides a waterproof battery pack which comprises a box body, a battery pack body, a battery pack cover and a battery pack cover, the mounting plate is fixedly connected with the inner wall of the box body and located at the opening of the box body, the mounting plate forms a frame body, and first mounting holes which are formed at intervals are formed in the mounting plate along the edge of the mounting plate; the battery module is arranged in the box body and is positioned below the mounting plate; the box cover is connected with the mounting plate to seal the opening of the box body, and second mounting holes in one-to-one correspondence with the first mounting holes are formed in the box cover; the fastener is used for connecting the first mounting hole of the mounting plate with the second mounting hole of the box cover, so that the box cover is fixedly connected with the mounting plate; and the first sealing ring is positioned between the box cover and the mounting plate and surrounds the fastener. The waterproof battery pack disclosed by the utility model is good in waterproof performance and sealing performance and convenient to maintain.

Description

Technical Field

[0001] The utility model relates to the field of new energy batteries, and more specifically, to a waterproof battery pack. Background Art

[0002] The existing battery pack includes a box body and a box cover, which are usually sealed with glue. The air tightness and waterproofness are poor, and liquids or impurities can easily enter the box, thereby damaging the battery module inside the box. In addition, the use of sealants can easily lead to high costs and poor adaptability to low-temperature application scenarios.

[0003] Moreover, when the box cover needs to be opened during the maintenance process, the sealant needs to be removed, and after the maintenance is completed, the sealant needs to be re-applied, which is a cumbersome process and inconvenient for maintenance. Utility Model Content

[0004] The utility model provides a new technical solution for a waterproof battery pack, which can at least solve the problems of poor sealing and waterproofness and inconvenient maintenance in the prior art.

[0005] According to the utility model, a waterproof battery pack is provided, the waterproof battery pack comprising:

[0006] A box body, wherein the top of the box body is open;

[0007] A mounting plate, the mounting plate is fixedly connected to the inner wall of the box body and is located at the opening of the box body, the mounting plate is formed as a frame, and the mounting plate has first mounting holes spaced apart along its edge;

[0008] A battery module, the battery module is arranged in the box and located below the mounting plate;

[0009] A box cover, the box cover is connected to the mounting plate to close the opening of the box body, and second mounting holes corresponding to the first mounting holes are formed on the box cover;

[0010] A fastener, through which the first mounting hole of the mounting plate and the second mounting hole of the box cover are connected, so that the box cover is fastened to the mounting plate;

[0011] A first sealing ring is located between the box cover and the mounting plate and surrounds the fastener.

[0012] Optionally, the waterproof battery pack includes:

[0013] a fastening nut, the fastening nut being inserted into the first mounting hole to be fixedly connected with the first mounting hole, the fastening nut comprising an insertion portion and a protrusion connected to the top of the insertion portion, the fastening nut being inserted into the first mounting hole through the insertion portion, and the protrusion protruding upward from the mounting plate;

[0014] A fastening bolt, the fastening bolt passes through the second mounting hole of the box cover and is threadedly connected with the fastening nut;

[0015] The first sealing ring surrounds the outer edge of the raised portion of the fastening nut and is located between the box cover and the mounting plate. The thickness of the first sealing ring is higher than the height of the raised portion of the fastening nut.

[0016] Optionally, the first sealing ring is also arranged along the four sides of the mounting plate to form a closed pattern.

[0017] Optionally, the fastening bolt includes a screw rod and a head, and the fastener further includes:

[0018] An elastic gasket and a second sealing ring are stacked up and down, both surround the screw of the fastening bolt, and are located between the head of the fastening bolt and the box cover.

[0019] Optionally, an outer protrusion protruding outward is formed on the circumference of the insertion portion of the fastening nut, and a groove capable of wrapping the outer protrusion is formed on the mounting plate, and the outer protrusion is an elastic component.

[0020] Optionally, the box includes:

[0021] Base plate;

[0022] A plurality of side panels are provided along the edge of the bottom plate and are located above the bottom plate, the mounting plate is horizontally arranged and connected to the side panels, the tops of at least two of the side panels which are arranged opposite to each other protrude from the box cover and have through-going guide holes formed on their surfaces, the tops of the guide holes are higher than the upper surface of the mounting plate, and the bottoms of the guide holes are located between the upper and lower surfaces of the mounting plate.

[0023] Optionally, a hanging hole is formed near the top of the side plate formed with the guide hole.

[0024] Optionally, the box cover is hollowed out, and the waterproof battery pack further includes:

[0025] A transparent plate covers and exceeds the hollowing out, and the transparent plate is detachably connected to the box cover.

[0026] Optionally, the waterproof battery pack further includes:

[0027] A third sealing ring is arranged along the edge of the transparent plate and is located between the transparent plate and the mounting plate.

[0028] Optionally, a protective plate is provided on the surface of the battery module.

[0029] According to the utility model, the waterproof battery pack includes a box body, a mounting plate, a battery module, a box cover, a fastener and a first sealing ring. The box cover is connected to the box cover through the mounting plate to form a closed shell, and the shell wraps the battery module to protect the battery module. The fastener passes through the second mounting hole of the box cover and the first mounting hole of the mounting plate from top to bottom, so that the box cover is fastened to the mounting plate. The first sealing ring surrounds the fastener and is located between the box cover and the mounting plate, which can prevent liquid or impurities from flowing into the box body from the gap between the fastener and the second through hole of the box cover, and can also prevent liquid or impurities from flowing into the first through hole of the mounting plate from the gap between the box cover and the mounting plate, so as to achieve a waterproof function and prevent liquid or impurities from entering the box body. Compared with sealing the box cover and the box body with sealant, the waterproof battery pack of this structure has better and more stable waterproof sealing and a longer service life. The first sealing ring has better high temperature and low temperature resistance, which increases the stability of the seal. Moreover, when the waterproof battery pack needs to be repaired, it is relatively easy to remove and place the first sealing ring, which is convenient for maintenance.

[0030] Other features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the present invention and, together with the description, serve to explain the principles of the present invention.

[0032] Figure 1 is a structural diagram of a waterproof battery pack according to an embodiment of the utility model;

[0033] Figure 2 It is a structural diagram of a box body and a mounting plate according to an embodiment of the utility model;

[0034] Figure 3 It is a structural diagram of the fastening nut, fastening bolt, first sealing ring, mounting plate, and box cover;

[0035] Figure 4 is a structural diagram of a first sealing ring according to an embodiment of the utility model;

[0036] Figure 5 yes Figure 1 A cross-sectional view of a waterproof battery pack according to an embodiment.

[0037] Reference numerals:

[0038] 11. Box cover; 12. Box body; 121. Side plate; 1211. Lifting hole; 1212. Diversion hole; 122. Bottom plate; 131. Fastening bolt; 132. Fastening nut; 1321. Insertion portion; 13211. External convex block; 1322. Raised portion; 133. First sealing ring; 1341. Elastic washer; 1342. Second sealing ring; 14. Mounting plate; 141. First mounting hole; 15. Transparent plate;

[0039] 20. Battery module; 201. Protective plate. DETAILED DESCRIPTION

[0040] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention.

[0041] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present invention, its application, or uses.

[0042] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0043] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0044] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0045] The waterproof battery pack according to the embodiment of the utility model is described in detail below with reference to the accompanying drawings.

[0046] like Figures 1 to 5 As shown, the waterproof battery pack according to the present invention includes a box body 12 , a mounting plate 14 , a battery module 20 , a box cover 11 , a fastener and a first sealing ring 133 .

[0047] First, the box body 12 and the mounting plate 14 are described. The top of the box body 12 is open. The mounting plate 14 is fixedly connected to the inner wall of the box body 12 and is located at the opening of the box body 12. The mounting plate 14 is formed as a frame, and the mounting plate 14 is formed with first mounting holes 141 spaced apart along its edge. The mounting plate 14 is fixedly connected to the inner wall of the box body 12, which can be welded, or the mounting plate 14 and the box body 12 are integrally formed.

[0048] like Figure 2 As shown, the mounting plate 14 is connected to the inner wall of the opening of the box body 12, and the first mounting hole 141 is convenient for connection.

[0049] Next, the battery module 20 will be described. The battery module 20 is disposed in the housing 12 and is located below the mounting plate 14 .

[0050] The battery module 20 is accommodated in the box body 12 , and the box body 12 protects the battery module 20 .

[0051] Next, the box cover 11 is described. The box cover 11 is connected to the mounting plate 14 to close the opening of the box body 12 , and a second mounting hole corresponding to the first mounting hole 141 is formed on the box cover 11 .

[0052] That is, the box cover 11 covers the mounting plate 14, thereby closing the opening of the box body 12. The first mounting hole 141 and the second mounting hole are aligned to facilitate the connection of the fastener.

[0053] Finally, the fastener and the first sealing ring 133 are described. The first mounting hole 141 of the mounting plate 14 and the second mounting hole of the box cover 11 are connected by the fastener, so that the box cover 11 is fastened to the mounting plate 14. The first sealing ring 133 is located between the box cover 11 and the mounting plate 14 and surrounds the fastener. The fastener can be an expansion screw, or a bolt (the first through hole and the second through hole are both threaded holes), etc.

[0054] The fastener passes through the first mounting hole 141 and the second mounting hole, so that the box cover 11 is fastened to the mounting plate 14. The first sealing ring 133 surrounds the fastener and is located between the box cover 11 and the mounting plate 14, so that liquid or impurities cannot flow into the box body 12 from the gap between the fastener and the second through hole of the box cover, and also cannot flow into the first through hole of the mounting plate 14 from the gap between the box cover and the mounting plate 14, thereby achieving a waterproof function.

[0055] The above waterproof battery pack includes a box body 12, a mounting plate 14, a battery module 20, a box cover 11, a fastener and a first sealing ring 133. The box cover 11 is connected to the box cover 11 through the mounting plate 14 to form a closed shell, and the shell wraps the battery module 20 to protect the battery module 20. The fastener passes through the second mounting hole of the box cover 11 and the first mounting hole 141 of the mounting plate 14 from top to bottom, so that the box cover 11 is fastened to the mounting plate 14. The first sealing ring 133 surrounds the fastener and is located between the box cover 11 and the mounting plate 14, which can prevent liquid or impurities from flowing into the box body 12 from the gap between the fastener and the second through hole of the box cover, and can also prevent liquid or impurities from flowing into the first through hole of the mounting plate 14 from the gap between the box cover and the mounting plate 14, thereby achieving a waterproof function and preventing liquid or impurities from entering the box body 12. Compared with sealing the box cover 11 and the box body 12 with a sealant, the waterproof battery pack of this structure has better and more stable waterproof and sealing properties and a longer service life. The first sealing ring 133 has good high and low temperature resistance, which increases the stability of the seal. Moreover, when the waterproof battery pack needs to be repaired, it is relatively easy to take out and place the first sealing ring 133, which is convenient for maintenance.

[0056] In some embodiments of the utility model, the waterproof battery pack includes a fastening nut 132 and a fastening bolt 131. The fastening nut 132 is inserted into the first mounting hole 141 to be fixedly connected with the first mounting hole 141. The fastening nut 132 includes an insertion portion 1321 and a protrusion 1322 connected to the top of the insertion portion 1321. The fastening nut 132 is inserted into the first mounting hole 141 through the insertion portion 1321, and the protrusion 1322 protrudes upward from the mounting plate 14. The fastening bolt 131 passes through the second mounting hole of the box cover 11 and is threadedly connected to the fastening nut 132. The first sealing ring 133 surrounds the outer edge of the protrusion 1322 of the fastening nut 132 and is located between the box cover 11 and the mounting plate 14. The thickness of the first sealing ring 133 is higher than the height of the protrusion 1322 of the fastening nut 132.

[0057] like Figure 3 As shown, the fastening nut 132 fixedly connected to the mounting plate 14 is connected to the fastening bolt 131. Compared with the fastening bolt 131 being directly threadedly connected to the first mounting hole 141 and the second mounting hole, the wear on the first mounting hole 141 and the second mounting hole can be reduced, and the height of the fastening bolt 131 can be higher, thereby increasing the contact area between the fastening bolt 131 and the fastening nut 132, increasing the stability of the connection, and improving the sealing.

[0058] The thickness of the first sealing ring 133 is higher than the height of the protrusion 1322 and is compressed to the same height as the protrusion 1322 , thereby ensuring the sealing performance and preventing the first sealing ring 133 from being excessively compressed and ruptured.

[0059] Furthermore, the first sealing ring 133 is also arranged along the four sides of the mounting plate 14 to form a closed pattern.

[0060] like Figure 3 and Figure 4 As shown, the first sealing ring 133 is also formed as a frame, so as to prevent liquid or debris from flowing into the box body 12 from the gap between the box cover and the mounting plate 14, further improving the sealing and waterproof properties.

[0061] Optionally, the fastening bolt 131 includes a screw rod and a head, and the fastener further includes:

[0062] The elastic washer 1341 and the second sealing ring 1342 are stacked up and down, both surround the screw of the fastening bolt 131 , and are located between the head of the fastening bolt 131 and the box cover 11 .

[0063] like Figure 3 As shown, the gap between the head of the fastening bolt 131 of the second mounting hole and the box cover 11 is sealed by the elastic gasket 1341 and the second sealing ring 1342, thereby increasing the sealing performance, preventing external liquid and pollutants from entering the box body 12 through the second mounting hole, and increasing the tightness of the connection between the mounting plate 14 and the box cover 11.

[0064] Optionally, an outer protrusion 13211 protruding outward is formed around the insertion portion 1321 of the fastening nut 132, and a groove capable of wrapping the outer protrusion 13211 is formed on the mounting plate 14, and the outer protrusion 13211 is an elastic part.

[0065] like Figure 3 As shown, the protruding portion 1321 of the fastening nut 132 is inserted into the first mounting hole 141, and the outer protrusion of the elastic member of the fastener is clamped into the circumferential groove of the first mounting hole 141 in the first mounting plate 14, thereby achieving a fixed connection between the fastening nut 132 and the first mounting plate 14.

[0066] The elastic outer protrusion contacts the groove, which can increase the contact area and further improve the sealing performance, thereby preventing external liquid and pollutants from entering the box body 12 through the first installation hole 141 and avoiding damage to the first installation hole 141 .

[0067] In some embodiments of the present invention, the box body 12 includes side panels 121 and a bottom panel 122. A plurality of side panels 121 are arranged along the edge of the bottom panel 122 and are located above the bottom panel 122. The mounting plate 14 is arranged horizontally and connected to the side panels 121. The tops of at least two oppositely arranged side panels 121 protrude from the box cover 11 and are formed with through-flow guide holes 1212 on their surfaces. The tops of the flow guide holes 1212 are higher than the upper surface of the mounting plate 14, and the bottoms of the flow guide holes 1212 are located between the upper and lower surfaces of the mounting plate 14.

[0068] like Figure 2 As shown, a guide hole 1212 is provided on the side plate 121 of the box body 12. Liquid or impurities falling onto the box cover 11 can flow out from the guide hole 1212 and avoid flowing into the box body 12. The height of the upper surface of the mounting plate 14 is located between the top and bottom ends of the guide hole 1212, so that even if the liquid flows into the slit between the mounting plate 14 and the side plate 121, it can flow out from the guide hole 1212. The bottom end of the guide hole 1212 is also located between the upper and lower surfaces of the mounting plate 14, so that the liquid can be prevented from flowing into the box body 12 from the guide hole 1212.

[0069] Furthermore, a lifting hole 1211 is formed adjacent to the top end of the side plate 121 formed with the guide hole 1212 .

[0070] The waterproof battery pack can be easily moved through the lifting hole 1211, which is convenient for placing and taking out the waterproof battery pack.

[0071] In some embodiments of the utility model, the waterproof battery pack further includes a transparent plate 15 and a fastener. The transparent plate 15 covers and exceeds the hollowing, and the transparent plate 15 is detachably connected to the box cover 11. Among them, the transparent plate 15 can be snapped or connected to the box cover 11 by bolts to achieve a detachable connection. Through the transparent plate 15, it is convenient to observe the situation inside the box body 12, and when the battery module 20 has an abnormality, it can be discovered and solved in time. The transparent plate 15 is detachably connected to the box cover, which facilitates the replacement and maintenance of the transparent plate 15.

[0072] Furthermore, the waterproof battery pack further includes a third sealing ring which is arranged along the edge of the transparent plate 15 and is located between the transparent plate 15 and the mounting plate 14 .

[0073] The third sealing ring can prevent liquid and impurities from flowing into the box body 12 from the gap between the transparent plate 15 and the box cover 11, thereby improving the sealing and waterproof properties.

[0074] In some embodiments of the present invention, a protective plate 201 is disposed on the surface of the battery module 20 .

[0075] like Figure 5 As shown, the protective plate 201 can prevent liquid or impurities from flowing into the battery module 20 and causing abnormal conditions, thereby further improving the waterproof capability.

[0076] Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present invention. It should be understood by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A waterproof battery pack, characterized in that: The waterproof battery pack comprises: A box body (12), wherein the top of the box body (12) is open; A mounting plate (14), the mounting plate (14) being fixedly connected to the inner wall of the box body (12) and being located at the opening of the box body (12), the mounting plate (14) being formed as a frame, and the mounting plate (14) having first mounting holes (141) spaced apart along its edge; A battery module (20), the battery module (20) being arranged in the box (12) and located below the mounting plate (14); a box cover (11), the box cover (11) being connected to the mounting plate (14) to close the opening of the box body (12), and the box cover (11) being formed with second mounting holes corresponding one to one with the first mounting holes (141); A fastener, through which the first mounting hole (141) of the mounting plate (14) and the second mounting hole of the box cover (11) are connected, so that the box cover (11) and the mounting plate (14) are fastened together; A first sealing ring (133), wherein the first sealing ring (133) is located between the box cover (11) and the mounting plate (14) and surrounds the fastener.

2. The waterproof battery pack according to claim 1, characterized in that: The waterproof battery pack comprises: a fastening nut (132), the fastening nut (132) being inserted into the first mounting hole (141) to be fixedly connected to the first mounting hole (141), the fastening nut (132) comprising an insertion portion (1321) and a protrusion (1322) connected to the top of the insertion portion (1321), the fastening nut (132) being inserted into the first mounting hole (141) through the insertion portion (1321), and the protrusion (1322) protruding upward from the mounting plate (14); A fastening bolt (131), wherein the fastening bolt (131) passes through a second mounting hole of the box cover (11) and is threadedly connected to the fastening nut (132); The first sealing ring (133) surrounds the outer edge of the raised portion (1322) of the fastening nut (132) and is located between the box cover (11) and the mounting plate (14); the thickness of the first sealing ring (133) is higher than the height of the raised portion (1322) of the fastening nut (132).

3. The waterproof battery pack according to claim 2, characterized in that: The first sealing ring (133) is also arranged along the four sides of the mounting plate (14) to form a closed pattern.

4. The waterproof battery pack according to claim 2, characterized in that: The fastening bolt (131) comprises a screw rod and a head, and the fastener further comprises: An elastic gasket (1341) and a second sealing ring (1342), wherein the elastic gasket (1341) and the second sealing ring (1342) are stacked up and down, both surround the screw of the fastening bolt (131), and are located between the head of the fastening bolt (131) and the box cover (11).

5. The waterproof battery pack according to claim 2, characterized in that: An outwardly protruding outer block (13211) is formed in the circumference of the insertion portion (1321) of the fastening nut (132), and a groove capable of wrapping the outer block (13211) is formed on the mounting plate (14), and the outer block (13211) is an elastic component.

6. The waterproof battery pack according to claim 1, characterized in that: The housing (12) comprises: Bottom plate (122); A plurality of side panels (121), wherein the plurality of side panels (121) are arranged along the edge of the bottom panel (122) and are located above the bottom panel (122); the mounting plate (14) is arranged horizontally and connected to the side panels (121); the tops of at least two of the side panels (121) arranged opposite to each other protrude from the box cover (11) and are provided with through-flow guide holes (1212) on their surfaces; the tops of the flow guide holes (1212) are higher than the upper surface of the mounting plate (14); and the bottoms of the flow guide holes (1212) are located between the upper surface and the lower surface of the mounting plate (14).

7. The waterproof battery pack according to claim 6, characterized in that: The side plate (121) formed with the guide hole (1212) is formed with a hanging hole (1211) adjacent to the top end thereof.

8. The waterproof battery pack according to claim 1, characterized in that: The box cover (11) is hollowed out, and the waterproof battery pack further comprises: A transparent plate (15), the transparent plate (15) covers and exceeds the hollowing, and the transparent plate (15) is detachably connected to the box cover (11).

9. The waterproof battery pack according to claim 8, characterized in that: The waterproof battery pack also includes: A third sealing ring is arranged along the edge of the transparent plate (15) and is located between the transparent plate (15) and the mounting plate (14).

10. The waterproof battery pack according to claim 1, characterized in that: A protective plate (201) is provided on the surface of the battery module (20).

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