Battery heat dissipation shell structure and energy storage device

Abstract

The utility model belongs to the technical field of batteries, and particularly relates to a battery heat dissipation outer shell structure and an energy storage device, which comprise an outer shell and a cover body, the cover body and the outer shell are mutually covered, an inner shell is arranged in the outer shell, a notch is arranged at the bottom of the inner shell, and a heat conducting sheet is arranged in the notch and is used for leading out heat of a battery pack. The end part of the heat-conducting fin is provided with a bending piece, and the space between the bending piece and the shell is filled with first heat-conducting glue. According to the utility model, heat of the battery pack can be conducted to the outside of the inner shell through the heat-conducting fins, and then the heat is conducted to the outer shell through the first heat-conducting glue, so that the heat dissipation of the battery pack is realized, and the heat can be conducted to the side part of the outer shell through the bending pieces, so that the heat dissipation efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of battery, concretely relates to a battery heat dissipation shell structure and energy storage device. BACKGROUND

[0002] With the rapid development of lithium ion battery technology, it is widely used in portable equipment, electric vehicles, aerospace and other fields. And the lithium ion battery because of its energy density, the composition is more active characteristics, make the use safety of lithium battery more and more people's attention.

[0003] After the battery module is assembled into the plastic bucket, the battery module is filled with glue, the heat dissipation performance of the battery module is poor, the top of the battery module can be cooled and dissipated by air, the bottom of the battery module cannot be dissipated, the temperature difference between the upper and lower battery cells is large, and the quality problems such as product performance, safety and service life are affected.

[0004] Therefore, a new technical scheme is needed to solve the above problems. UTILITY MODEL CONTENTS

[0005] One of the purposes of the utility model is: in view of the shortage of prior art, a battery heat dissipation shell structure is provided, which can export the heat of the battery pack to the outside of the inner shell through the setting of the heat conduction sheet, and then export the heat to the shell through the first heat conduction glue, so as to realize the heat dissipation of the battery pack.

[0006] In order to realize the above purpose, the utility model adopts the following technical scheme:

[0007] A battery heat dissipation shell structure, comprising a shell and a cover, the cover and the shell are covered with each other, the inner shell is arranged in the shell, the bottom of the inner shell is provided with a notch, the notch is provided with a heat conduction sheet, the heat conduction sheet is used for exporting the heat of the battery pack, the end of the heat conduction sheet is provided with a bending piece, the surface of the bending piece and the outer side of the inner shell abut, and the first heat conduction glue is filled between the bending piece and the shell.

[0008] Preferably, the surface of the heat conduction sheet is provided with a first heat dissipation pad, and the second heat dissipation pad is arranged between the heat conduction sheet and the shell.

[0009] Preferably, the outer side of the inner shell is provided with a groove, the side of the groove is provided with a clamping groove, the surface of the bending piece and the surface of the groove abut, and one end of the bending piece extends into the clamping groove.

[0010] Preferably, at least one buffer pad is arranged between the inner shell and the shell.

[0011] Preferably, at least one positioning groove is arranged on the outer side of the inner shell, and a positioning piece matched with the positioning groove is arranged on the inner side of the shell.

[0012] Preferably, the bottom of the inner shell is provided with two supports, and the gap is arranged between the two supports.

[0013] Preferably, the side of the support is provided with at least one buckle, and one end of the buckle faces the gap.

[0014] Preferably, the outer side of the inner shell is provided with a limiting groove, and one side of the buffer pad extends into the limiting groove.

[0015] Preferably, the outer side of the inner shell is provided with a plurality of supports.

[0016] Preferably, the side of the outer shell is provided with a handle.

[0017] Preferably, the side of the outer shell is provided with a plurality of heat dissipation grooves.

[0018] Preferably, a sealing ring is arranged between the cover and the outer shell.

[0019] The second purpose of the utility model is to provide an energy storage device, which comprises the battery heat dissipation shell structure, a battery pack is arranged in the inner shell, the second heat-conducting adhesive is filled between the battery pack and the inner shell, and the first heat dissipation pad is arranged between the battery pack and the heat-conducting sheet.

[0020] Preferably, the surface of the cover is provided with at least one protrusion, and one end of the protrusion abuts against the top of the inner shell.

[0021] Preferably, a clamping part is arranged between the protrusion and the inner shell, the side of the clamping part is bent towards the top of the battery pack and is clamped with the top of the battery pack, and a gasket is arranged between the clamping part and the inner shell.

[0022] Preferably, an interface is arranged on the cover, and the interface is electrically connected with the battery pack.

[0023] The beneficial effects of this utility model are as follows: This utility model includes an outer shell and a cover, which are fitted together. Multiple screw holes are provided on the surface of the cover and the top of the outer shell, and the cover and outer shell are fixedly connected by screws. An inner shell is provided inside the outer shell, which is used to house a battery pack. The battery pack is a soft-pack battery, and the inner shell is made of plastic. A notch is provided at the bottom of the inner shell, and a heat-conducting plate is placed in the notch. The notch and the heat-conducting plate are matched, and the side of the heat-conducting plate abuts against the side of the notch. The heat-conducting plate is used to dissipate heat from the battery pack. A bending member is provided at the end of the heat-conducting plate, and the surface of the bending member abuts against the outer side of the inner shell. A first thermally conductive adhesive is filled between the bending member and the outer shell. Since the plastic part does not have thermal conductivity, the heat at the bottom of the battery pack is difficult to dissipate. The heat from the bottom of the battery pack is dissipated through a notch in the bottom of the inner shell. A heat-conducting sheet further enhances the heat dissipation capacity of the bottom of the battery pack. During the potting process between the battery pack and the inner shell, the heat-conducting sheet prevents the adhesive from leaking out. The two ends of the heat-conducting sheet are bent to form a U-shape, allowing heat from the battery pack to be conducted to the inside of the outer shell. When the bottom of the outer shell is made of plastic, the heat-conducting sheet can also conduct heat to the outer shell, achieving a cooling effect. A first thermally conductive adhesive is filled between the bent portion and the outer shell, allowing the heat-conducting sheet to transfer heat to the outer shell more quickly. The outer shell is an aluminum cylinder, and the heat-conducting sheet is an aluminum sheet. This invention, by using a heat-conducting sheet, can conduct heat from the battery pack to the outside of the inner shell, and then the first thermally conductive adhesive conducts the heat to the outer shell, thus achieving heat dissipation of the battery pack. The bent portion can also conduct heat to the side of the outer shell, improving heat dissipation efficiency. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0025] Figure 2 This is an exploded view of the present invention.

[0026] Figure 3 This is a schematic diagram of the inner shell and heat-conducting sheet of this utility model.

[0027] Figure 4 This is a schematic diagram of the inner shell of this utility model.

[0028] Figure 5 For the present utility model Figure 4 Enlarged view of point A in the middle.

[0029] Figure 6 This is a schematic diagram of the outer shell of this utility model.

[0030] Figure 7 This is one of the cross-sectional views of this utility model.

[0031] Figure 8 for the utility model Figure 7 Enlarged view of B.

[0032] Figure 9 for the utility model

[0033] Figure 10 for the utility model Figure 9 Enlarged view of C.

[0034] Figure 11 for the utility model

[0035] Wherein: 1, shell, 11, positioning piece, 12, handle, 13, heat dissipation groove, 2, cover, 21, protrusion, 22, interface, 23, sealing ring, 3, inner shell, 31, notch, 32, groove, 321, clamping groove, 33, positioning groove, 34, support piece, 341, buckle, 35, limiting groove, 36, support sheet, 4, heat conduction sheet, 41, bending piece, 5, battery pack, 6, first heat conduction glue, 7, first heat dissipation pad, 8, second heat dissipation pad, 9, buffer pad, 10, second heat conduction glue, 20, clamping piece, 30, gasket. DETAILED DESCRIPTION

[0036] As some terms are used in the description and claims, those skilled in the art will understand that manufacturers can use different names to refer to the same component. The description and claims of the utility model do not distinguish components by name differences, but by functional differences. As mentioned throughout the description and claims, "including" is an open term, which should be interpreted as "including but not limited to". In the utility model, unless otherwise specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected between two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0037] The utility model will be further described in detail below in combination with the drawings Figures 1-11 and specific embodiments, but not as a limitation on the utility model.

[0038] Example 1

[0039] The utility model provides a battery radiating shell structure, including shell 1 and cover 2, cover 2 and shell 1 are mutually covered, the surface of cover 2 and the top of shell 1 all are provided with a plurality of screw holes, and cover 2 and shell 1 are fixedly connected through screw, be provided with inner shell 3 in shell 1, and inner shell 3 is used to place battery pack 5, and battery pack 5 is soft package battery, and inner shell 3 is plastic part, and the bottom of inner shell 3 is provided with gap 31, and gap 31 is provided with heat conduction sheet 4, and gap 31 and heat conduction sheet 4 are matched, and the side of heat conduction sheet 4 and the side of gap 31 abut, and heat conduction sheet 4 is used to lead out the heat of battery pack 5, and the end of heat conduction sheet 4 is provided with bending piece 41, and the surface of bending piece 41 and the outside of inner shell 3 abut, and the first heat conduction glue 6 is filled between bending piece 41 and shell 1, and plastic part does not have the ability of heat conduction, and the top of battery pack 5 can be cooled and radiated naturally with air, but the heat of the bottom of battery pack 5 is difficult to radiate, by setting gap 31 in the bottom of inner shell 3, the heat of the bottom of battery pack 5 can radiate, and by setting heat conduction sheet 4, the heat dissipation capacity of the bottom of battery pack 5 can be improved, when glue is filled between battery pack 5 and inner shell 3, heat conduction sheet 4 can also ensure that the glue of glue filling does not flow outside, and the both ends of heat conduction sheet 4 are bent to form bending piece 41, so that the overall structure of heat conduction sheet 4 is U-shaped, and this structure makes the heat of battery pack 5 can be led to the inside of shell 1 through heat conduction sheet 4, when the bottom of shell 1 is plastic part, heat conduction sheet 4 can also be heat-conducted to shell 1, so as to achieve the effect of cooling, and the first heat conduction glue 6 is filled between bending piece 41 and shell 1, so that heat conduction sheet 4 can faster lead heat to shell 1, shell 1 is aluminum cylinder, heat conduction sheet 4 is aluminum sheet, and the top of battery pack 5 refers to the end of battery pack 5 close to cover 2, and the bottom of battery pack 5 refers to the end of battery pack 5 away from cover 2. By setting heat conduction sheet 4, the heat of battery pack 5 can be led to the outside of inner shell 3, and then the heat is led to shell 1 through the first heat conduction glue 6, so as to realize the heat dissipation of battery pack 5, and the heat can be led to the side of shell 1 through bending piece 41, so as to improve the heat dissipation efficiency.

[0040] In the embodiment, the surface of heat conduction sheet 4 is provided with first heat dissipation pad 7, and second heat dissipation pad 8 is arranged between heat conduction sheet 4 and shell 1, and the first heat dissipation pad 7 and the second heat dissipation pad 8 are heat conduction glue pads. The first heat dissipation pad 7 is arranged on the inner side of the bottom of the inner shell 3 and abuts against the bottom of the inner shell 3, and the first heat dissipation pad 7 can better abut against the battery pack 5 and the heat conduction sheet 4 and has good heat conductivity, so as to improve the heat dissipation efficiency between the battery pack 5 and the heat conduction sheet 4; the second heat dissipation pad 8 is arranged on the outer side of the bottom of the inner shell 3 and abuts against the bottom of the inner shell 3, and the second heat dissipation pad 8 can better abut against the shell 1 and the heat conduction sheet 4 and has good heat conductivity, so as to improve the heat dissipation efficiency between the shell 1 and the heat conduction sheet 4, and the shell 1 is an aluminum cylinder and is made of aluminum or other heat-conductive metal materials or other heat-conductive materials.

[0041] In the embodiment, the outer side of the inner shell 3 is provided with a groove 32, the side of the groove 32 is provided with a clamping groove 321, the surface of the bending piece 41 abuts against the surface of the groove 32, and one end of the bending piece 41 extends into the clamping groove 321. By arranging the groove 32, the bending piece 41 can be directly abutted into the groove 32 during installation, thereby playing a positioning role and improving installation efficiency. By arranging the clamping groove 321, the deformation of one end of the bending piece 41 can be prevented, so that installation is not affected.

[0042] Embodiment 2

[0043] Different from the embodiment 1, at least one buffer pad 9 is arranged between the outer side of the inner shell 3 and the inner side of the outer shell 1. The buffer pad 9 can play a role of filling, buffering and limiting, so that the inner shell 3 can be fixed in the outer shell 1.

[0044] In the embodiment, the outer side of the inner shell 3 is provided with at least one positioning groove 33, four positioning grooves 33 are arranged, two positioning grooves 33 are arranged on one side of the inner shell 3, and the other two positioning grooves 33 are arranged on the other side of the inner shell 3. The inner side of the outer shell 1 is provided with a positioning piece 11 matched with the positioning groove 33. By arranging the positioning groove 33 and the positioning piece 11, the inner shell 3 can be directly inserted along the direction of the positioning piece 11 during installation, thereby improving installation efficiency.

[0045] In the embodiment, the bottom of the inner shell 3 is provided with two supporting pieces 34, and the gap 31 is arranged between the two supporting pieces 34. The supporting piece 34 is used for closing the two sides of the bottom of the inner shell 3, and also plays a role of supporting the battery.

[0046] In the embodiment, the side of the supporting piece 34 is provided with at least one buckle 341, a plurality of buckles 341 are arranged along the side of the supporting piece 34, one end of the buckle 341 faces the gap 31, and the buckle 341 is used for fixing the heat-conducting sheet 4.

[0047] In the embodiment, the outer side of the inner shell 3 is provided with a limiting groove 35, one side of the buffer pad 9 extends into the limiting groove 35, and the limiting groove 35 is used for preventing the buffer pad 9 from being displaced.

[0048] In the embodiment, the outer side of the inner shell 3 is provided with a plurality of supporting sheets 36. Because the positioning groove 33 and the limiting groove 35 are arranged, part of the outer side of the inner shell 3 will have a protruding structure, which is relatively fragile. Therefore, the supporting sheet 36 is arranged, and a plurality of supporting sheets 36 are arranged in cross, thereby improving the stability of the inner shell 3.

[0049] In the embodiment, the side of the outer shell 1 is provided with a handle 12.

[0050] In this embodiment, the side of the shell 1 is provided with a plurality of heat dissipation grooves 13, which are used to improve the heat dissipation efficiency of the shell 1.

[0051] In this embodiment, a sealing ring 23 is arranged between the cover 2 and the shell 1, which is used to improve the sealing between the cover 2 and the shell 1.

[0052] The other structures of this embodiment are the same as those of embodiment 1, and will not be described here.

[0053] Embodiment 3

[0054] A kind of energy storage device, including the battery heat dissipation shell structure as described in embodiment 1 or embodiment 2, battery pack 5 is arranged in inner shell 3, battery pack 5 and inner shell 3 are filled with second heat-conducting adhesive 10 between, by setting second heat-conducting adhesive 10, so that the heat of battery pack 5 can be quickly conducted to heat conduction sheet 4, improve the heat dissipation efficiency, first heat dissipation pad 7 is arranged between battery pack 5 and heat conduction sheet 4, first heat dissipation pad 7 can better with battery pack 5 and heat conduction sheet 4 abut, and have good thermal conductivity, so as to improve the heat dissipation efficiency between battery pack 5 and heat conduction sheet 4. By setting heat conduction sheet 4, the heat of battery pack 5 can be led out to the outside of inner shell 3, then the heat is led out to shell 1 again by first heat-conducting adhesive 6, so as to realize the heat dissipation of battery pack 5.

[0055] In this embodiment, the surface of the cover 2 is provided with at least one protrusion 21, and the two protrusions 21 are oppositely arranged on the surface of the cover 2, and one end of the protrusion 21 abuts with the top of the inner shell 3. By setting the protrusion 21, the inner shell 3 can be limited, and the stability of the inner shell 3 can be improved.

[0056] In this embodiment, a clamping piece 20 is arranged between the protrusion 21 and the inner shell 3, the number of the clamping piece 20 is two, the side of the clamping piece 20 is bent towards the battery pack 5 and clamped with the top of the battery pack 5, and a gasket 30 is arranged between the clamping piece 20 and the inner shell 3. By setting the clamping piece 20, the battery pack 5 can be fixed to prevent shaking; when installing the clamping piece 20, the clamping piece 20 is fixed on the shell 1 by using screws, the opening side of the inner shell 3 is provided with a plurality of notches, and the screws pass through the clamping piece 20 and the notches to press and fix the inner shell 3, and by setting the gasket 30, the damage of the inner shell 3 during installation can be avoided, and the stability of installation can be improved.

[0057] In this embodiment, an interface 22 is arranged on the cover 2, the interface 22 is electrically connected with the battery pack 5, and the interface 22 is used for charging and discharging the battery pack 5.

[0058] Obviously, the utility model discloses shell and cover, cover and shell are mutually covered, the surface of cover and the top of shell all are provided with a plurality of screw holes, and the cover and shell are fixedly connected through screw, be provided with inner shell in the shell, and the inner shell is used for placing battery pack, and the battery pack is soft package battery, and the inner shell is plastic piece, and the bottom of inner shell is provided with gap, and the gap is provided with heat conduction sheet, and the gap and heat conduction sheet are matched, and the side of heat conduction sheet and the side of gap abut, and heat conduction sheet is used for exporting the heat of battery pack, and the end of heat conduction sheet is provided with bending piece, and the surface of bending piece and the outside of inner shell abut, and the first heat conduction glue is filled between bending piece and shell, and plastic piece does not have the ability of heat conduction, so the heat of battery pack bottom is difficult to radiate, through setting gap in the bottom of inner shell, the heat of battery pack bottom can radiate, and then through setting heat conduction sheet, the heat dissipation capacity of battery pack bottom can be improved, when filling glue between battery pack and inner shell, heat conduction sheet can also guarantee that the glue of filling glue does not flow to the outside, and the both ends of heat conduction sheet are bent and handle and form bending piece, and the overall structure of heat conduction sheet is U-shaped, and this structure makes the heat of battery pack can be guided to the inside of shell through heat conduction sheet, when the bottom of shell is plastic piece, heat conduction sheet can also be guided to the shell and reach the effect of cooling, and the first heat conduction glue is filled between bending piece and shell, so that heat conduction sheet can faster guide the heat to the shell, and the shell is aluminium cylinder, and the heat conduction sheet is aluminium sheet.The utility model discloses through setting heat conduction sheet, can export the heat of battery pack to the outside of inner shell, then through the first heat conduction glue, the heat is exported to the shell again, thereby realizing the heat dissipation of battery pack.

[0059] According to the disclosure and teaching of the above description, the skilled in the art of the utility model can also change and modify the above embodiments. Therefore, the utility model is not limited to the above specific embodiments, and any obvious improvement, replacement or modification made by the skilled in the art on the basis of the utility model belongs to the protection scope of the utility model. In addition, although some specific terms are used in the specification, these terms are only for convenience of description and do not constitute any limitation on the utility model.

Claims

1. A battery heat dissipation casing structure, characterized in that, The device includes an outer shell (1) and a cover (2), which cover the outer shell (1) together. An inner shell (3) is provided in the outer shell (1). A notch (31) is provided at the bottom of the inner shell (3). A heat-conducting sheet (4) is provided in the notch (31). The heat-conducting sheet (4) is used to conduct heat from the battery pack (5). A bending member (41) is provided at the end of the heat-conducting sheet (4). A first thermally conductive adhesive (6) is filled between the bending member (41) and the outer shell (1).

2. The battery heat dissipation casing structure as described in claim 1, characterized in that, The surface of the heat-conducting sheet (4) is provided with a first heat dissipation pad (7), and a second heat dissipation pad (8) is provided between the heat-conducting sheet (4) and the outer shell (1).

3. The battery heat dissipation casing structure as described in claim 1, characterized in that, The outer side of the inner shell (3) is provided with a groove (32), and the side of the groove (32) is provided with a slot (321). The surface of the bent part (41) abuts against the surface of the groove (32), and one end of the bent part (41) extends into the slot (321).

4. The battery heat dissipation casing structure as described in claim 1, characterized in that, At least one buffer pad (9) is provided between the inner shell (3) and the outer shell (1).

5. The battery heat dissipation casing structure as described in claim 1, characterized in that, The outer side of the inner shell (3) is provided with at least one positioning groove (33), and the inner side of the outer shell (1) is provided with a positioning element (11) that matches the positioning groove (33).

6. The battery heat dissipation casing structure as described in claim 1, characterized in that, The bottom of the inner shell (3) is provided with two support members (34), and the notch (31) is provided between the two support members (34).

7. The battery heat dissipation casing structure as described in claim 6, characterized in that, The support member (34) has at least one buckle (341) on its side, with one end of the buckle (341) facing the notch (31).

8. An energy storage device, characterized in that, The battery heat dissipation housing structure includes any one of claims 1 to 7, wherein a battery pack (5) is disposed in the inner shell (3), a second thermally conductive adhesive (10) is filled between the battery pack (5) and the inner shell (3), and a first heat dissipation pad (7) is disposed between the battery pack (5) and the thermally conductive sheet (4).

9. The energy storage device as described in claim 8, characterized in that, The surface of the cover (2) is provided with at least one protrusion (21), one end of which abuts against the top of the inner shell (3).

10. The energy storage device as described in claim 9, characterized in that, A locking member (20) is provided between the protrusion (21) and the inner shell (3). The side of the locking member (20) is bent toward the battery pack (5) and engaged with the top of the battery pack (5). A gasket (30) is provided between the locking member (20) and the inner shell (3).

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