CN217823082U - Secondary lithium cell group support thermal interlock prevents structure - Google Patents

Abstract

The utility model belongs to the technical field of secondary lithium battery, especially, be a secondary lithium CELL group support thermal interlocking prevents structure, including the battery pack body, battery pack body outer end is provided with the aluminum hull, the aluminum hull inside has set gradually No. one BLOCK, no. two BLOCK, no. three BLOCK, no. four BLOCK, no. five BLOCK, still is provided with the PLASTIC LAMINATED between two adjacent BLOCKs, and the inside of each independent BLOCK all runs through and has seted up the exhaust hole, still form the air discharge duct between aluminum hull and the BLOCK, CELL interval 1mm, and support 1mm design, reduce lithium CELL group size, miniaturized design; the thermal interlocking prevention design technology is provided, and the burning delay test can be performed through acupuncture; as a later-stage lithium battery pack development template of the electric power-assisted bicycle, the development cost is reduced, and the development period is shortened.

Description

Secondary lithium cell group support thermal interlock prevents structure

Technical Field

The utility model belongs to the technical field of secondary lithium cell, concretely relates to support thermal interlock of secondary lithium cell group prevents structure.

Background

With the continuous development of the field of electric power-assisted bicycles, the sales volume of the international market, particularly the European market, has been increased dramatically in recent years, and the needs of various international old-brand enterprises and emerging enterprises in the field are also multiplied. In order to satisfy the market trend of bigger capacity, miniaturization, lightweight, promote the product competitiveness of lithium cell group, reduce the size as far as possible in the design, simultaneously in order to ensure end user's the security of the lives and property, the design has the lithium cell group of hot chain prevention technique.

In order to cope with the increasingly severe competition, the development cycle is shortened. Template for preventing design as development of later-stage secondary lithium battery pack through thermal linkage of 1mm support

Because of the particularity of the use environment of the electric power-assisted bicycle, the limitation of space size, the increase of the number of batteries, the increase of capacity and the riding of terminal users on various complex pavements, customers and terminal users pay more and more attention to the safety of the lithium battery pack, and the safety of the lithium battery pack is ensured as a manufacturer for integrated design and manufacture of monocells and the battery pack, and the safety of lives and property of the terminal users is particularly important.

SUMMERY OF THE UTILITY MODEL

For solving the above-mentioned problem that exists among the prior art, the utility model provides a secondary lithium cell group support thermal interlocking prevents structure has the miniaturization, and the lightweight, the large capacity still prevents the characteristics of thermal interlocking simultaneously.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a secondary lithium cell group support thermal interlock prevents structure, includes the battery pack body, the external end of battery pack is provided with the aluminum hull, inside BLOCK, no. two BLOCK, no. three BLOCK, no. four BLOCK, no. five BLOCK that have set gradually of aluminum hull, still be provided with the PLASTIC LAMINATED between two adjacent BLOCK, every independent BLOCK's inside has all run through and has seted up the exhaust hole, still form the air duct between aluminum hull and the BLOCK.

As the utility model discloses a secondary lithium cell group support thermal interlock prevents that structure is preferred technical scheme, every independent BLOCK still includes No. two supports to and No. three supports that a support and the other end are connected that No. two support one ends are connected.

As the utility model discloses a secondary lithium cell group support thermal interlock prevents the preferred technical scheme of structure, the both ends of No. two supports are provided with the cassette, the link of a support and No. three supports and No. two supports all is provided with the fixture block, block fixed mounting through No. three supports and cassette between No. two supports and a support, no. three supports.

As the utility model discloses a secondary lithium CELL group support thermal interlock prevents the preferred technical scheme of structure, and the interval is 1mm between the CELL of BLOCK inside, and is provided with the RIB all around at BLOCK.

As a result of the utility model discloses a secondary lithium cell group support thermal interlock prevents the preferred technical scheme of structure, the PLASTIC LAMINATED is two settings for corresponding at independent BLOCK's both ends, and the junction of PLASTIC LAMINATED all is provided with the insulation board between two adjacent BLOCK.

Compared with the prior art, the beneficial effects of the utility model are that: through choosing suitable PC fire prevention V-0 material for use, through calculating the most reasonable structure size of design, reduce CELL interval to 1mm, RIB that designs as much as possible on the support or increase the meat thickness at utmost increase specific heat capacity, the exhaust structure of simultaneous design, the separation material of inflammation is prevented in design between the BLOCK, through thermal analysis simulation, MOCK sample test is verified, realize through the acupuncture delay burning test, and use as later stage development template, can arrive following advantage:

1, the CELL interval is 1mm, and the bracket is designed to be 1mm, so that the size of the lithium battery pack is reduced, and the design is miniaturized;

2. the thermal interlocking prevention design technology is provided, and the burning delay test can be carried out through acupuncture;

3. as the development template of the lithium battery pack of the electric power-assisted bicycle in the later period, the development cost is reduced, and the development period is shortened.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the principles of the invention. In the drawings:

fig. 1 is a schematic structural view of the present invention;

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

FIG. 3 is a schematic side view of the present invention;

FIG. 4 is a schematic diagram of a stand-alone BLOCK according to the present invention;

FIG. 5 is a schematic diagram of the structure of the separated BLOCK of the present invention;

in the figure: 1. a battery pack; 2. an aluminum shell; 3. a first BLOCK; 4. BLOCK number two; 5. BLOCK number three; 6. BLOCK number four; 7. BLOCK number five; 8. a fire-proof plate; 9. a first bracket; 10. a second bracket; 11. a third bracket; 12. a card holder; 13. a clamping block; 14. an exhaust hole; 15. an air discharge groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Examples

Referring to fig. 1-5, the present invention provides the following technical solutions: the utility model provides a secondary lithium cell group support thermal interlocking prevents structure, including the battery pack body 1, 1 outer end of battery pack body is provided with aluminum hull 2, 2 inside BLOCKs 3 that have set gradually of aluminum hull, no. two BLOCKs 4, no. three BLOCKs 5, no. four BLOCKs 6, no. five BLOCKs 7, still be provided with PLASTIC LAMINATED 8 between two adjacent BLOCKs, every independent BLOCK's inside has all been run through and has been seted up exhaust hole 14, still form air discharge duct 15 between aluminum hull 2 and the BLOCK, exhaust hole 14 and air discharge duct 15 all play in this embodiment and accelerate the energy exchange effect, thereby guarantee the inside radiating effect of battery pack body 1 and last the heat dissipation.

Specifically, each independent BLOCK further comprises a second bracket 10, a first bracket 9 connected with one end of the second bracket 10, and a third bracket 11 connected with the other end of the second bracket 10.

Specifically, both ends of second support 10 are provided with cassette 12, and the link of first support 9 and No. three support 11 and No. two support 10 all is provided with fixture block 13, and No. two support 10 and No. 9, no. three support 11 between the block fixed mounting through No. three support 11 and cassette 12, compact structure is small and exquisite in this embodiment, simple to operate.

Specifically, the interval is 1mm between the inside CELL of BLOCK, and is provided with RIB around BLOCK, shortens to 1mm through the interval between the CELL in this embodiment, then still increases RIB around the support, increases the specific heat capacity, and the conduction of increase energy has good radiating effect.

Specifically, the both ends of PLASTIC LAMINATED 8 at independent BLOCK are two settings that correspond, and the junction of PLASTIC LAMINATED 8 between two adjacent BLOCKs all is provided with the insulation board, and the insulation board prevents that electrolyte from spraying to adjacent electric core in this embodiment.

The utility model discloses a theory of operation and use flow: through choosing suitable PC fire prevention V-0 material for use, through calculating reasonable structure size, reduce CELL interval to 1mm, RIB that designs as much as possible on the support or increase the meat thickness at utmost and increase specific heat capacity, design exhaust structure simultaneously, the separation material of anti-inflammation is designed between the BLOCK, through thermal analysis simulation, MOCK sample test verifies, realizes through the acupuncture delay burning test to use as later stage development template.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (5)

1. The utility model provides a support thermal interlock of secondary lithium cell group prevents structure which characterized in that: including the battery pack body (1), the battery pack body (1) outer end is provided with aluminum hull (2), aluminum hull (2) inside has set gradually a BLOCK (3), no. two BLOCK (4), no. three BLOCK (5), no. four BLOCK (6), no. five BLOCK (7), still is provided with PLASTIC LAMINATED (8) between two adjacent BLOCK, and every independent BLOCK's inside has all been run through and has been seted up exhaust hole (14), still form air discharge duct (15) between aluminum hull (2) and the BLOCK.

2. The secondary lithium battery pack holder thermal interlock prevention structure according to claim 1, wherein: each independent BLOCK also comprises a second bracket (10), a first bracket (9) connected with one end of the second bracket (10) and a third bracket (11) connected with the other end of the second bracket (10).

3. The secondary lithium battery pack holder thermal interlock prevention structure according to claim 2, wherein: the two ends of the second support (10) are provided with clamping seats (12), clamping blocks (13) are arranged at the connecting ends of the first support (9), the third support (11) and the second support (10), the first support (9) and the third support (11) are fixedly installed through clamping of the third support (11) and the clamping seats (12).

4. The secondary lithium battery pack holder thermal interlock prevention structure according to claim 1, wherein: the distance between CELL inside the BLOCK is 1mm, and RIB is arranged around the BLOCK.

5. The secondary lithium battery pack holder thermal interlock prevention structure according to claim 1, wherein: the both ends of PLASTIC LAMINATED (8) at independent BLOCK are two settings that correspond, and the junction of PLASTIC LAMINATED (8) all is provided with the insulation board between two adjacent BLOCKs.

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