CN205680728U - Conducting strip, overcharge protection assembly and electrokinetic cell top cover - Google Patents

Abstract

The application relates to energy storage device field, particularly relates to a kind of conducting strip, overcharges protection assembly and electrokinetic cell top cover.Conducting strip includes main body, failure of current structure and bonding pad, and failure of current structure is arranged on the middle part of main body, and failure of current structure size in the longitudinal direction is more than size in the direction of the width, and bonding pad is present in the lower surface of main body.Overcharging protection assembly and include rotating sheet and conducting strip, the middle part of rotating sheet is fixing with failure of current structure to be connected.Electrokinetic cell top cover includes coping plate, insulating part and overcharges protection assembly, and coping plate is provided with rotating sheet connecting hole, and rotating sheet is fixed on coping plate and seals rotating sheet connecting hole, and insulating part is positioned at the lower section of coping plate, and fixed-conductive film.Conducting strip provided herein, the failure of current structure overcharging protection assembly and electrokinetic cell top cover can bear bigger air pressure.

Description

Conducting strip, overcharge protection assembly and electrokinetic cell top cover

Technical field

The application relates to energy storage device field, particularly relates to a kind of conducting strip, overcharges protection assembly and electrokinetic cell top cover.

Background technology

For EV duricrust battery, in order to solve to overcharge problem, the commonly used scheme of industry is, cuts before battery core loses efficacy Power-off pond major loop, prevents battery from continuing charging to ensure cell safety.

Currently for square duricrust battery, some employing CID (failure of current structure).That is, have one at positive pole major loop Individual Pneumatic turnover sheet and integrated current cut off structure in the conducting strip of one.Conducting strip surrounding passes through, with naked cell polar ear, the company of welding Connecing, the failure of current structure division of conducting strip and rotating sheet are by being welded to connect in one, rotating sheet and positive terminal or top cover Sheet is by being weldingly connected a conduct current positive terminal.Working as over-charging of battery, air pressure inside increases, and promotes rotating sheet to pull apart electric current and cuts Disconnected structure, disconnects rotating sheet with conducting strip.

The circular configuration that failure of current structure in correlation technique typically uses, the passage being arranged on conducting strip and In the elongated zones that the bonding pad of both sides is surrounded.Owing to being limited by space, the failure of current structure of circular configuration is had Area too small, the intensity of self is relatively low, therefore cannot bear excessive air pressure.

Utility model content

This application provides a kind of conducting strip, overcharge protection assembly and electrokinetic cell top cover, it is possible to solve the problems referred to above.

The first aspect of the application provides a kind of conducting strip, including main body, failure of current structure and bonding pad, described Main body is laminated structure, and described failure of current structure is arranged on the middle part of described main body, and along the extended planar of described main body, Described failure of current structure size in the longitudinal direction is more than size in the direction of the width,

Bonding pad is present in the lower surface of described main body, and is positioned at the both sides of the width of described failure of current structure.

Preferably, the edge of described failure of current structure is rounding off.

Preferably, described failure of current structure is track type.

Preferably, described failure of current structure is oval.

Preferably, described failure of current structure is one-body molded with described main body.

Preferably, the edge of described failure of current structure is provided with a circle weak area, and described failure of current structure is in external force Can be torn along described weak area under Zuo Yong.

Preferably, also include passage, described passage be positioned on the length direction of described failure of current structure relative to Both sides, and run through the thickness direction of described main body.

The second aspect of the application provides one and overcharges protection assembly, including rotating sheet and described conducting strip,

The middle part of described rotating sheet is fixing with described failure of current structure to be connected.

Preferably, described rotating sheet includes union joint and turning part,

Turning part is lamellar annuli arrangement, and described union joint is positioned at the middle part of turning part, described union joint court Described failure of current structure is protruded, and fixing with described failure of current structure is connected.

Preferably, the shape of described union joint is consistent with the shape of described failure of current structure.

The third aspect of the application provides a kind of electrokinetic cell top cover, including coping plate, insulating part and described mistake Fill protection assembly,

Being provided with rotating sheet connecting hole on described coping plate, described rotating sheet is fixed on described in described coping plate and sealing and turns over Rotor connecting hole,

Described insulating part is positioned at the lower section of described coping plate, and fixing described conducting strip.

The technical scheme that the application provides can reach following beneficial effect:

Conducting strip provided herein, overcharge protection assembly and electrokinetic cell top cover is big by arranging lengthwise dimension Failure of current structure in width size, it is possible to make full use of the space between two bonding pads, increases failure of current knot The area of structure, thus improve the structural strength of self, bear bigger air pressure.

It should be appreciated that it is only exemplary that above general description and details hereinafter describe, can not be limited this Application.

Accompanying drawing explanation

Fig. 1 by the embodiment of the present application provided use track type failure of current structure conducting strip look up stereochemical structure Figure；

The face upwarding assumption diagram of the conducting strip using track type failure of current structure that Fig. 2 is provided by the embodiment of the present application；

The face upwarding assumption diagram of the conducting strip using ellipse current cut-out structure that Fig. 3 is provided by the embodiment of the present application；

The partial enlarged drawing of the electrokinetic cell top cover that Fig. 4 is provided by the embodiment of the present application.

Reference:

1-overcharges protection assembly；

10-conducting strip；

100-main body；

102-failure of current structure；

102a-weak area；

104-passage；

106-bonding pad；

12-rotating sheet；

120-union joint；

122-turning part；

2-coping plate；

20-rotating sheet connecting hole；

3-insulating part.

Accompanying drawing herein is merged in description and constitutes the part of this specification, it is shown that meet the enforcement of the application Example, and for explaining the principle of the application together with description.

Detailed description of the invention

Below by specific embodiment and combine accompanying drawing the application is described in further detail.Described in literary composition "front", "rear", "left", "right", " on ", D score all with the conducting strip in accompanying drawing, overcharge protection assembly, electrokinetic cell top cover and dynamic The laying state of power battery is reference.

As shown in Figures 1 to 3, the embodiment of the present application provides a kind of conducting strip 10, including main body 100, failure of current structure 102, passage 104 and bonding pad 106, main body 100 is laminated structure, and failure of current structure 102 is arranged in main body 100 Portion, and along the extended planar of main body 100, failure of current structure 102 size in the longitudinal direction is more than in the direction of the width Size, say, that failure of current structure 102 be shaped as thin-and-long, rather than circle of the prior art.Failure of current Structure 102 typically can be one-body molded with main body 100, compared to main body 100, the thinnest on thickness, in order to be easily pulled off. Generally can also arrange a circle weak area 102a at the edge of failure of current structure 102, the thickness at the 102a of weak area is permissible That does is thinner, in order to failure of current structure 102a can be torn along weak area 102a under external force.

Bonding pad 106 is then present in the lower surface of main body 100, and be positioned at failure of current structure 102 width two Side.So, failure of current structure 102 just can the most sufficiently utilize the space that two bonding pads 106 are surrounded, as far as possible Increase the area of self such that it is able to possess higher intensity, to adapt to bigger air pressure pulling force.

For the ease of gas by conducting strip 10, in the present embodiment on the length direction of failure of current structure 102 relatively Both sides be respectively provided with passage 104, passage 104 runs through the thickness direction of main body 100 such that it is able to make conducting strip 10 both sides Gas can circulate.

In the present embodiment, the structure of failure of current structure 102 can be arbitrary narrow structure, such as rectangle, rhombus Deng, but all there is obvious knuckle in these structures, and easily producing stress at knuckle concentrates, and causes failure of current structure 102 mistake Early it is torn.Therefore, preferably failure of current structure 102 is designed as edge and is the structure of rounding off, thus eliminate stress Concentration zones.The shape meeting this requirement has track type, ellipse etc..Class ovaloid is also possible, but there may be stress not Equal problem.

Another embodiment of the application provides one and overcharges protection assembly 1, sees structure shown in arrow 1 in Fig. 4, including Conducting strip 10 in rotating sheet 12 and above-described embodiment, the middle part of rotating sheet 12 is fixing with failure of current structure 10 to be connected.One In the case of as, rotating sheet 12 includes union joint 120 and turning part 122, and turning part 122 is lamellar annuli arrangement, is used for bearing Air pressure and overturn, union joint 120 is positioned at the middle part of turning part 122, and union joint 120 protrudes towards failure of current structure 102, and with electricity Stream cuts off the fixing connection of structure 102, acts on failure of current structure 102 when turning part 122 overturns, is torn, reaches to cut The effect of power-off stream.

Generally, the shape of union joint 120 can make arbitrary shape, is the most simply circular, but, by It is elongated shape in failure of current structure 102, if therefore using circle, failure of current structure 102 and the weak area of surrounding Distance meeting heterogeneity between 102a, thus cause the distribution inequality of active force, affect the intensity of failure of current structure 102.For Avoiding above-mentioned situation, the shape of union joint 120 is preferably consistent with the holding of the shape of failure of current structure 102.

In use, need to be fixed rotating sheet 12 respectively with conducting strip 10, such as in another embodiment of the application In the electrokinetic cell top cover provided, as shown in Figure 4, including in above-described embodiment overcharging protection assembly 1, coping plate 2 and Insulating part 3, is provided with rotating sheet connecting hole 20 on coping plate 2, and the edge of turning part 122 can be fixed on top by rotating sheet 12 Cover plate 2 and sealing rotating sheet connecting hole 20, insulating part 3 is positioned at the lower section of coping plate 2, and fixed-conductive film 10.

After conducting strip 10 and rotating sheet 12 are fixed respectively, rotating sheet 12 the most just can only overturn, Active force in switching process can be transferred on conducting strip 10, due to conducting strip 10 by fixing master, it is impossible to mobile, therefore makees Firmly will finally be transferred at the 102a of weak area, be torn.

Conducting strip that the embodiment of the present application is provided, overcharge protection assembly and electrokinetic cell top cover can increase failure of current The area of structure, thus improve the structural strength of failure of current structure, bear bigger air pressure.

The foregoing is only the preferred embodiment of the application, be not limited to the application, for the skill of this area For art personnel, the application can have various modifications and variations.All within spirit herein and principle, that is made any repaiies Change, equivalent, improvement etc., within should be included in the protection domain of the application.

Claims (11)

1. a conducting strip, it is characterised in that include main body, failure of current structure and bonding pad, described main body is lamellar knot Structure, described failure of current structure is arranged on the middle part of described main body, and along the extended planar of described main body, described failure of current Structure size in the longitudinal direction is more than size in the direction of the width,

Bonding pad is present in the lower surface of described main body, and is positioned at the both sides of the width of described failure of current structure.

2. conducting strip as claimed in claim 1, it is characterised in that the edge of described failure of current structure is rounding off.

3. conducting strip as claimed in claim 2, it is characterised in that described failure of current structure is track type.

4. conducting strip as claimed in claim 2, it is characterised in that described failure of current structure is oval.

5. the conducting strip as described in any one of Claims 1-4, it is characterised in that described failure of current structure and described main body One-body molded.

6. the conducting strip as described in any one of Claims 1-4, it is characterised in that the edge of described failure of current structure is arranged There are a circle weak area, described failure of current structure can be torn along described weak area under external force.

7. the conducting strip as described in any one of Claims 1-4, it is characterised in that also include that passage, described passage are positioned at On the length direction of described failure of current structure relative to both sides, and run through the thickness direction of described main body.

8. one kind overcharges protection assembly, it is characterised in that include the conduction described in rotating sheet and any one of claim 1 to 7 Sheet,

The middle part of described rotating sheet is fixing with described failure of current structure to be connected.

Overcharge protection assembly the most as claimed in claim 8, it is characterised in that described rotating sheet includes union joint and upset Portion,

Turning part is lamellar annuli arrangement, and described union joint is positioned at the middle part of turning part, and described union joint is towards described Failure of current structure is protruded, and fixing with described failure of current structure is connected.

Overcharge protection assembly the most as claimed in claim 9, it is characterised in that the shape of described union joint is cut with described electric current The shape of disconnected structure is consistent.

11. 1 kinds of electrokinetic cell top covers, it is characterised in that include coping plate, insulating part and any one of claim 8 to 10 institute That states overcharges protection assembly,

Being provided with rotating sheet connecting hole on described coping plate, described rotating sheet is fixed on described coping plate and seals described rotating sheet Connecting hole,

Described insulating part is positioned at the lower section of described coping plate, and fixing described conducting strip.