CN210349879U

CN210349879U - Power battery shell insulation packaging structure

Info

Publication number: CN210349879U
Application number: CN201822075328.6U
Authority: CN
Inventors: 郭志星; 刘康
Original assignee: Jiangsu Changfeng Precision Technology Co ltd
Current assignee: Jiangsu Changfeng Precision Technology Co ltd
Priority date: 2018-12-11
Filing date: 2018-12-11
Publication date: 2020-04-17
Anticipated expiration: 2028-12-11

Abstract

The utility model relates to an insulating packaging structure of power battery shell, including casing, lid and the insulating cover body, the lid detachably install on the casing, the insulating cover body wrap up in the outside of casing and lid, the insulating cover body constitute by insulating casing and insulating lid, casing and lid clamp through insulating lid and fix in the insulating casing, insulating lid and insulating casing clamp through upper pinch plate and lower pinch plate and fix, be provided with clamping mechanism between upper pinch plate and the lower pinch plate, the bottom of insulating lid be provided with the arch, the upper end of insulating casing be provided with protruding assorted draw-in groove; the design has the advantages of simple structure, easy manufacture, practicality and high efficiency.

Description

Power battery shell insulation packaging structure

Technical Field

The utility model relates to a battery case technical field, especially an insulating packaging structure of power battery casing.

Background

With the development of modern society and the enhancement of environmental awareness of people, more and more devices select a lithium battery as a power supply, such as mobile phones, notebook computers, electric tools, electric automobiles and the like, so that a wide space is provided for the application and development of the lithium battery. Among them, lithium batteries used in electric tools, electric vehicles, and the like are generally called power batteries.

At present, the shell of the power battery is an aluminum shell made of pure aluminum materials or a steel shell made of stainless steel materials. In order to prevent the surface of the battery case from being scratched or short-circuited, the battery case is generally coated. The conventional power battery shell coating structure comprises a double-sided coating (bottom exposed) and a U-shaped coating (bottom full coating). However, both of these envelope structures suffer from disadvantages: 1) insulation sheets are required to be pasted on the top and the bottom of the battery adopting the rectangular-shaped envelope structure, and the bottom of the battery is in an exposed state, so that the problem of insulation failure of the battery is easy to occur when the bottom of an automobile module wades; 2) the insulation problem of battery bottom has been solved to adoption U type diolame structure, but the battery top still need paste the insulating piece, and the problem of top insulating piece perk appears easily in this kind of structure, has increased the safe risk of taking place the battery short circuit, and the rework that leads to from this causes seriously influences production efficiency, leads to the rework cost to increase simultaneously, and the battery quality reduces.

In view of the above, it is necessary to further improve the existing power battery casing coating structure to prevent the safety risk of external short circuit of the battery, effectively improve the coating efficiency, reduce the production cost, and damage the battery by rainwater entering the casing with the long-term use of the battery.

Disclosure of Invention

The utility model discloses be provided with the insulating sleeve body in the outside of casing and lid, prevented the contact of battery with water through the insulating sleeve body, reduced the safe risk of short circuit, and provide an insulating packaging structure of power battery casing.

For solving foretell technical problem, the utility model discloses a structure includes casing, lid and the insulating cover body, lid detachably install on the casing, the insulating cover body parcel in the outside of casing and lid, the insulating cover body constitute by insulating casing and insulating lid, casing and lid press from both sides tightly to fix in the insulating casing through insulating lid, insulating lid and insulating casing press from both sides tightly fixedly through last pinch-off blades and lower pinch-off blades, last pinch-off blades and lower pinch-off blades between be provided with clamping mechanism, the bottom of insulating lid be provided with the arch, insulating casing's upper end be provided with protruding assorted draw-in groove.

Further: the top of the cover body is provided with a wiring barrel, an explosion-proof valve and a liquid feeding pipe, and the insulating cover body is provided with a first through hole, a second through hole and a third through hole at positions corresponding to the wiring barrel, the explosion-proof valve and the liquid feeding pipe respectively.

And further: the center of the upper clamping plate is provided with a through groove, the first through hole, the second through hole and the third through hole are positioned right below the through groove, and the connecting cylinder, the explosion-proof valve and the liquid feeding pipe respectively extend out of the through groove.

And further: the bottom of insulating lid be provided with rubber seal, the top of lid be provided with rubber seal assorted seal groove, rubber seal connect in the seal groove.

And further: the bottom of the insulating cover body is provided with two or more than two rubber sealing rings.

And further: the clamping mechanism comprises a screw rod and locking nuts, the lower end of the screw rod is fixedly connected to the lower clamping plate, the upper end of the screw rod penetrates through the upper clamping plate and is movably connected with the upper clamping plate, the locking nuts are respectively connected to the screw rods on the upper side and the lower side of the upper clamping plate, and the upper clamping plate is clamped and fixed on the screw rod through the locking nuts on the upper side and the lower side.

And further: and threaded holes for mounting are formed in four corners of the lower clamping plate.

After the structure is adopted, the insulating sleeve body is arranged outside the shell and the cover body, so that the contact between the battery and water is prevented through the insulating sleeve body, and the safety risk of short circuit is reduced; and the design also has the advantages of simple structure, easy manufacture, practicality and high efficiency.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Fig. 1 is a schematic structural diagram of the present invention.

Detailed Description

As shown in fig. 1, the power battery case insulation packaging structure includes a case 10, a cover 9 and an insulation cover body 5, the cover body 9 is detachably arranged on the shell body 10, the insulating sleeve body 5 is wrapped outside the shell body 10 and the cover body 9, the insulating sleeve body 5 consists of an insulating shell 2 and an insulating cover body 3, the shell 10 and the cover body 9 are clamped and fixed in the insulating shell 2 through the insulating cover body 3, the insulating cover body 3 and the insulating shell body 2 are clamped and fixed through an upper clamping plate 5 and a lower clamping plate 1, a clamping mechanism is arranged between the upper clamping plate 5 and the lower clamping plate 1, a bulge 7 is arranged at the bottom of the insulating cover body 3, the upper end of the insulating shell 2 is provided with a clamping groove matched with the bulge 7, and four corners of the lower clamping plate 1 are provided with threaded holes 12 for installation. The utility model discloses be provided with the insulating sleeve body in the outside of casing and lid, prevented the contact of battery with water through the insulating sleeve body, reduced the safe risk of short circuit.

The top of the cover body 9 shown in fig. 1 is provided with a wire connecting cylinder 13, an explosion-proof valve 14 and a liquid feeding pipe 15, the insulating cover body 3 is provided with a first through hole, a second through hole and a third through hole at positions corresponding to the wire connecting cylinder 13, the explosion-proof valve 14 and the liquid feeding pipe 15, the center of the upper clamping plate 5 is provided with a through groove 4, the first through hole, the second through hole and the third through hole are positioned under the through groove 4, and the wire connecting cylinder 13, the explosion-proof valve 14 and the liquid feeding pipe 15 respectively extend out of the through groove 4.

As shown in fig. 1, a rubber seal ring 11 is disposed at the bottom of the insulating cover 3, a seal groove matched with the rubber seal ring 11 is disposed at the top of the cover 9, the rubber seal ring 11 is connected in the seal groove, and two or more rubber seal rings 11 are disposed at the bottom of the insulating cover 3.

The clamping mechanism shown in fig. 1 comprises a screw rod 6 and a locking nut 8, wherein the lower end of the screw rod 6 is fixedly connected to the lower clamping plate 1, the upper end of the screw rod 6 penetrates through the upper clamping plate 5 and is movably connected with the upper clamping plate, the screw rods 6 on the upper side and the lower side of the upper clamping plate 5 are respectively connected with the locking nut 8, and the upper clamping plate 5 is clamped and fixed on the screw rod 6 through the locking nuts 8 on the upper side and the lower side. The design has the advantages of simple structure, easy manufacture, practicality and high efficiency.

Claims

1. The utility model provides an insulating packaging structure of power battery shell which characterized in that: including casing, lid and the insulating cover body, lid detachably install on the casing, the insulating cover body parcel in the outside of casing and lid, the insulating cover body constitute by insulating casing and insulating lid, casing and lid press from both sides tightly through insulating lid and fix in the insulating casing, insulating lid and insulating casing press from both sides tightly fixedly through last clamp plate and lower clamp plate, last clamp plate and lower clamp plate between be provided with clamping mechanism, the bottom of insulating lid be provided with the arch, the upper end of insulating casing be provided with protruding assorted draw-in groove.

2. The power battery shell insulation packaging structure of claim 1, wherein: the top of the cover body is provided with a wiring barrel, an explosion-proof valve and a liquid feeding pipe, and the insulating cover body is provided with a first through hole, a second through hole and a third through hole at positions corresponding to the wiring barrel, the explosion-proof valve and the liquid feeding pipe respectively.

3. The power battery shell insulation packaging structure of claim 2, wherein: the center of the upper clamping plate is provided with a through groove, the first through hole, the second through hole and the third through hole are positioned right below the through groove, and the connecting cylinder, the explosion-proof valve and the liquid feeding pipe respectively extend out of the through groove.

4. The power battery shell insulation packaging structure of claim 1, wherein: the bottom of insulating lid be provided with rubber seal, the top of lid be provided with rubber seal assorted seal groove, rubber seal connect in the seal groove.

5. The power battery shell insulation packaging structure of claim 3, wherein: the bottom of the insulating cover body is provided with two or more than two rubber sealing rings.

6. The power battery shell insulation packaging structure of claim 1, wherein: the clamping mechanism comprises a screw rod and locking nuts, the lower end of the screw rod is fixedly connected to the lower clamping plate, the upper end of the screw rod penetrates through the upper clamping plate and is movably connected with the upper clamping plate, the locking nuts are respectively connected to the screw rods on the upper side and the lower side of the upper clamping plate, and the upper clamping plate is clamped and fixed on the screw rod through the locking nuts on the upper side and the lower side.

7. The power battery shell insulation packaging structure according to any one of claims 1 or 5, wherein: and threaded holes for mounting are formed in four corners of the lower clamping plate.