CN210467912U

CN210467912U - Waterproof soaking structure of lithium cell group

Info

Publication number: CN210467912U
Application number: CN201921417461.3U
Authority: CN
Inventors: 倪捷; 陈文胜; 王豪; 王松根; 傅国平; 冯春献
Original assignee: BOE Technology Group Co Ltd
Current assignee: BOE Technology Group Co Ltd; Zhejiang Luyuan Electric Vehicle Co Ltd
Priority date: 2019-08-29
Filing date: 2019-08-29
Publication date: 2020-05-05
Anticipated expiration: 2029-08-29

Abstract

The utility model discloses a lithium cell group waterproof soaking structure, including shell, output socket, electricity core subassembly, protection shield, output socket sets up on the shell, electricity core subassembly is located inside the shell, the protection shield is connected inside the shell, still include inner bag, heat conduction casting glue, be provided with the big storehouse body, the little storehouse body on the inner bag, electricity core subassembly is located in the big storehouse body, the protection shield is connected on the little storehouse body, the shell includes epitheca and inferior valve, output socket sets up on the inferior valve, heat conduction casting glue is filled electricity core subassembly clearance and inner bag inner space, heat conduction casting glue is filled inner bag and inferior valve clearance. The utility model provides the high stability of epitheca, inferior valve installation closes when having avoided epitheca, inferior valve to have all connect the circuit and covers the influence to the circuit, has improved overall structure level clarity simultaneously, and the part assembly influences each other lessly, has promoted manufacturability and reliability.

Description

Waterproof soaking structure of lithium cell group

Technical Field

The utility model relates to a lithium cell package assembly especially relates to a waterproof soaking structure of lithium cell group.

Background

In some existing lithium battery assembly technical schemes, a lithium battery core and a protection plate are often in the same space and are simply fixed by using an adhesive tape, so that the assembly consistency is difficult to ensure, and the manufacturability is poor; generally, a single-layer shell glue filling scheme is adopted for a lithium battery, if the tightness of a battery core is ensured, the height of a shell is limited, if the shell is considered firstly, the glue filling height of the battery core is possibly limited, the mutual influence between glue filling and the assembly of a battery part is large, and the manufacturability is limited to a certain extent; the lithium cell during operation receives individual difference to influence electric core inconsistent that generates heat, and the colloid of irritating only is in waterproof consideration, and the heat conductivity is general, lacks the improvement effect to the inhomogeneous phenomenon that generates heat, needs to improve this.

Disclosure of Invention

The utility model discloses it is poor to the protection shield assembly uniformity that exists among the prior art, and the manufacturability receives the restriction, and upper and lower lid assembly reliability is relatively poor, and the encapsulating is highly restricted, and defects such as the encapsulating thermal conductivity is relatively poor provide a new waterproof soaking structure of lithium cell group.

In order to solve the technical problem, the utility model discloses a following technical scheme realizes:

the utility model provides a lithium cell group waterproof soaking structure, includes shell, output socket, electricity core subassembly, protection shield, output socket sets up on the shell, electricity core subassembly is located inside the shell, the protection shield is connected inside the shell, still includes inner bag, heat conduction casting glue, be provided with the big storehouse body, the little storehouse body on the inner bag, electricity core subassembly is located in the big storehouse body, the protection shield is connected on the little storehouse body, the shell includes epitheca and inferior valve, output socket sets up on the inferior valve, heat conduction casting glue fills electricity core subassembly clearance and inner bag inner space, heat conduction casting glue fills inner bag and inferior valve clearance.

The inner bag is used for forming big storehouse body, the little storehouse body, and big storehouse body is used for placing the electric core subassembly, and the little storehouse body is used for installing the protection shield, improves the stability of protection shield installation, and heat conduction casting glue fills electric core subassembly clearance, inner bag inner space, inner bag and inferior valve clearance, makes the utility model discloses an inside temperature obtains effectual transmission, has good waterproof and anti-seismic performance between inner bag and the inferior valve simultaneously, and during heat conduction casting glue filled the inner bag, can break through the restriction of inferior valve height, and the pouring glue height is not restricted by battery housing structure by inner bag height decision, and higher pouring glue height has brought more excellent waterproof and heat dispersion. On battery output socket was fixed in the inferior valve, consequently can all parts assembly and walk the installation that the line finishes the back carries out epitheca, inferior valve, closed when having avoided epitheca, inferior valve all to have connect the circuit and cover the influence to the circuit, the design that the cell subassembly and protection shield were installed respectively in the big storehouse body, the little storehouse body has guaranteed overall structure level clear simultaneously, and parts assembly influences less each other, has promoted manufacturability and reliability.

Preferably, the above waterproof soaking structure of lithium battery pack, the electric core assembly comprises more than 2 electric core monomers, and high thermal conductivity gaskets are arranged between the electric core monomers.

Set up the high heat-conducting gasket between electric core monomer and heat conduction casting glue cooperation and form a space that heat conductivility is good, the heat is supplemented to low temperature department by high temperature department when electric core subassembly work generates heat, forms the even thermal field of temperature, guarantees that each electric core monomer's operational environment tends to unanimity, effectively avoids electric core monomer to fall behind, prolongs the whole life of electric core subassembly.

Preferably, the waterproof soaking structure of the lithium battery pack further comprises an elastic cushion block, wherein the elastic cushion block is arranged on the outer surface of the battery pack and is positioned between the large bin body and the battery pack.

The elastic cushion block plays roles of buffering and protecting, and the overall safety is improved. The elastic cushion block is arranged between the large bin body and the electric core assembly, the large bin body and the electric core assembly are separated by a gap with the same width, so that the heat-conducting pouring sealant can be uniformly poured, the heat dissipation is more uniform, and meanwhile, the elastic cushion block improves the stability of the whole structure.

Preferably, in the above waterproof and uniform heating structure for the lithium battery pack, an open slot is formed in the small bin body, and the lower end of the protection plate is clamped into the open slot.

The open slot that sets up plays the fixed action, and the protection shield lower extreme carries out spacing fixed through the card income open slot, has improved holistic stability.

Preferably, the waterproof soaking structure of the lithium battery pack further comprises a heat dissipation plate, an opening sliding groove is formed in the outer side of the small bin body, and the heat dissipation plate is connected to the opening sliding groove.

The opening sliding groove is arranged to play a role in fixing, and the heat dissipation plate is connected and fixed on the opening sliding groove. The arranged heat dissipation plate plays a good heat dissipation role on the protection plate.

Preferably, in the above waterproof and uniform heating structure for the lithium battery pack, the heat-conducting pouring sealant fills the space between the heat-dissipating plate and the small cabin body.

The heat conduction pouring sealant is filled between the heat dissipation plate and the small cabin body, plays roles of fixing, resisting shock and preventing water of the protection plate and the heat dissipation plate, and meanwhile, further strengthens the heat dissipation effect of the protection plate.

Preferably, the above waterproof soaking structure of lithium cell group, be provided with the support on the inferior valve, be provided with first locating hole on the support, the inferior valve is equipped with first fixed column, the epitheca is provided with the second fixed column, first fixed column passes first locating hole and cooperatees with the second fixed column, still includes the connecting piece, the connecting piece is connected first locating hole and second fixed column.

The first fixed column of setting on the inferior valve passes the first locating hole on the support and is connected with the second fixed column that sets up on the epitheca through the connecting piece, and its effect is connected epitheca and inferior valve, has improved holistic stability.

Preferably, the upper portion of the support is further provided with a third fixing column, and the output socket is provided with a second positioning hole matched with the third fixing column.

The third fixed column on the support is inserted into the second positioning hole on the output socket to fix the output socket on the support, so that the position of the output socket is fixed, and the mounting stability of the output socket is improved.

Preferably, the inner container wall of the waterproof and soaking structure of the lithium battery pack is provided with a wire groove.

The wire casing that sets up on the inner wall is used for arrangement and fixed battery inner line, and battery inner line after the fixing can not receive the influence of installation and take place to drag and extrude, has promoted holistic security.

Preferably, the inner side of the top of the upper shell is provided with a boss, and the boss is abutted to the elastic cushion block.

The boss that sets up is inconsistent with the elastic cushion, further fixes the electric core subassembly, has strengthened overall structure's stability.

Drawings

Fig. 1 is a perspective view of the present invention;

FIG. 2 is an exploded view of the present invention;

fig. 3 is a cross-sectional view of the present invention;

fig. 4 is a cross-sectional view of the outlet of the present invention.

Detailed Description

The invention will be described in further detail with reference to the accompanying drawings 1-4 and the detailed description, which are not intended to limit the invention:

example 1

As shown in fig. 1, 2, 3, and 4:

the utility model provides a lithium cell group waterproof soaking structure, includes shell 1, output socket 2, electric core subassembly 3, protection shield 5, output socket 2 sets up on the shell 1, electric core subassembly 3 is located inside the shell 1, protection shield 5 is connected inside the shell 1 still includes inner bag 6, heat conduction casting glue 7, be provided with big storehouse body 61, little storehouse body 62 on the inner bag 6, electric core subassembly 3 is located in big storehouse body 61, protection shield 5 is connected on the little storehouse body 62, shell 1 includes epitheca 11 and inferior valve 12, output socket 2 sets up on inferior valve 12, heat conduction casting glue 7 fills 3 clearances of electric core subassembly and 6 inner bag inner space, heat conduction casting glue 7 fills the clearance of inner bag 6 and inferior valve 12.

During the installation, at first put into the big storehouse body 61 of inner bag 6 with electric core subassembly 3, connect protection shield 5 on the little storehouse body 62 of inner bag 6 again, then place inner bag 6 in inferior valve 12 corresponding position department then with 3 clearances of heat conduction casting glue 7 filling electric core subassembly, 6 inner spaces of inner bag and inner bag 6 and inferior valve 12 clearances, wherein can set up the rib on inner bag 6 and the inferior valve 12, and the cooperation through the rib is positioning action of stepping first, later install output socket 2 on inferior valve 12, close upper shell 11 lid on inferior valve 12 at last, accomplish the equipment.

Preferably, the cell assembly 3 includes more than 2 cell units 31, and high thermal conductivity gaskets 32 are disposed between the cell units 31.

Preferably, the battery pack further comprises an elastic cushion block 33, wherein the elastic cushion block 33 is arranged on the outer surface of the battery pack 3 and is positioned between the large bin body 61 and the battery pack 3.

Preferably, an open slot 621 is arranged in the small chamber 62, and the lower end of the protection plate 5 is clipped in the open slot 621.

Preferably, the heat-dissipating device further comprises a heat-dissipating plate 4, an open sliding groove 622 is formed outside the small cabin body 62, and the heat-dissipating plate 4 is connected to the open sliding groove 622.

Preferably, the heat-conducting pouring sealant 7 fills the space between the heat-dissipating plate 4 and the small cabin body 62.

Preferably, the lower shell 12 is provided with a bracket 8, the bracket 8 is provided with a first positioning hole 81, the lower shell 12 is provided with a first fixing column 121, the upper shell 11 is provided with a second fixing column 111, the first fixing column 121 penetrates through the first positioning hole 81 to be matched with the second fixing column 111, the fixing device further comprises a connecting piece 13, and the connecting piece 13 is connected with the first positioning hole 81 and the second fixing column 111.

Preferably, the upper portion of the bracket 8 is further provided with a third fixing post 82, and the output socket 2 is provided with a second positioning hole 21 matched with the third fixing post 82.

Preferably, a wire groove 63 is formed on the wall of the inner container 6.

Preferably, a boss 112 is disposed on the inner side of the top of the upper shell 11, and the boss 112 abuts against the elastic pad 33.

More specifically, when big storehouse body 61 is put into to electric core subassembly 3, separate the certain distance through the elastic cushion block 33 that sets up on electric core subassembly 3 and big storehouse body 61, after protection shield 5 card goes into the open slot 621 in the little storehouse body 62, connect heating panel 4 on the opening spout 622 of the little storehouse body 62 side, reuse heat conduction casting glue 7 fills the little storehouse body 62. When installing output socket 2, through fixing output socket 2 on support 8, make output socket 2 set up on inferior valve 12, then arrange in order the wire casing 63 that sets up on through the inner bag 6 wall with the battery inner line, it is fixed, at last to epitheca 11, inferior valve 12 closes the lid, boss 112 and the elastic cushion block 33 that epitheca 11 set up are inconsistent, improve the holistic stability of structure, epitheca 11, inferior valve 12 closes the lid back, first fixed column 121 passes first locating hole 81 and second fixed column 111 block, and connect through connecting piece 13, make support 8 obtain further fixed.

In short, the above description is only a preferred embodiment of the present invention, and all the equivalent changes and modifications made within the scope of the claims of the present invention should be covered by the present invention.

Claims

1. The utility model provides a waterproof soaking structure of lithium cell group, includes shell (1), output socket (2), electric core subassembly (3), protection shield (5), output socket (2) set up on shell (1), electric core subassembly (3) are located inside shell (1), protection shield (5) are connected inside shell (1), its characterized in that: still include inner bag (6), heat conduction casting glue (7), be provided with big storehouse body (61), the little storehouse body (62) on inner bag (6), electricity core subassembly (3) are located in the big storehouse body (61), protection shield (5) are connected on the little storehouse body (62), shell (1) includes epitheca (11) and inferior valve (12), output socket (2) set up on inferior valve (12), heat conduction casting glue (7) are filled electricity core subassembly (3) clearance and inner bag (6) inner space, heat conduction casting glue (7) are filled inner bag (6) and inferior valve (12) clearance.

2. The lithium battery pack waterproof soaking structure according to claim 1, characterized in that: the battery core assembly (3) comprises more than 2 battery cell monomers (31), and high-thermal-conductivity gaskets (32) are arranged among the battery cell monomers (31).

3. The lithium battery pack waterproof soaking structure according to claim 1, characterized in that: the electric power generation device is characterized by further comprising an elastic cushion block (33), wherein the elastic cushion block (33) is arranged on the outer surface of the electric core assembly (3) and is located between the large cabin body (61) and the electric core assembly (3).

4. The lithium battery pack waterproof soaking structure according to claim 1, characterized in that: an open slot (621) is arranged in the small bin body (62), and the lower end of the protection plate (5) is clamped into the open slot (621).

5. The lithium battery pack waterproof soaking structure according to claim 1, characterized in that: still include heating panel (4), cell body (62) outside is provided with opening spout (622), heating panel (4) are connected on opening spout (622).

6. The lithium battery pack waterproof heat soaking structure according to claim 5, characterized in that: the heat-conducting pouring sealant (7) is filled between the heat-radiating plate (4) and the small cabin body (62).

7. The lithium battery pack waterproof soaking structure according to claim 1, characterized in that: the improved fixing device is characterized in that a support (8) is arranged on the lower shell (12), a first positioning hole (81) is formed in the support (8), a first fixing column (121) is arranged on the lower shell (12), a second fixing column (111) is arranged on the upper shell (11), the first fixing column (121) penetrates through the first positioning hole (81) to be matched with the second fixing column (111), the improved fixing device further comprises a connecting piece (13), and the first positioning hole (81) and the second fixing column (111) are connected through the connecting piece (13).

8. The lithium battery pack waterproof soaking structure according to claim 7, characterized in that: the upper portion of the support (8) is further provided with a third fixing column (82), and the output socket (2) is provided with a second positioning hole (21) matched with the third fixing column (82).

9. The lithium battery pack waterproof soaking structure according to claim 1, characterized in that: a wire groove (63) is arranged on the wall of the inner container (6).

10. The lithium battery pack waterproof soaking structure according to claim 3, characterized in that: the inner side of the top of the upper shell (11) is provided with a boss (112), and the boss (112) is abutted to the elastic cushion block (33).