CN207517799U - A kind of insulation spacer and the lithium ion battery for including it - Google Patents

Abstract

The utility model discloses a kind of insulation spacer and includes its lithium ion battery, wherein insulation spacer is included using shim body made of isolation material, shim body has the gasket side for abutting the housing sidewall of battery, gasket side is concavely provided with the dashpot of the negative lug buffering for battery, offered in shim body through shim body be used for for battery positive pole ear by cushion hole, cushion hole and dashpot are disposed in shim body.By setting dashpot and cushion hole on insulation spacer, placement space can be reserved to lug, be folded in this space for lug, when battery bears foreign impacts, can cushioning effect be played by the deformation of lug in itself；By the way that cushion hole and dashpot are disposed in shim body, positive pole ear and negative lug can be effectively isolated, ensure insulation effect.

Description

A kind of insulation spacer and the lithium ion battery for including it

Technical field

The utility model is related to battery technology field more particularly to a kind of insulation spacer and include its lithium ion battery.

Background technology

Battery (Battery), which refers to, fills electrolyte solution and metal electrode to generate the device of electric current.The type of battery is non- Chang Duo, wherein the most extensive with lithium ion battery applications, because lithium ion battery has, voltage is high, cycle life bigger than energy It grows, have a safety feature, self discharge is small and the advantages of quickly-chargeable.

Lithium ion battery is also widely used for automotive field, but automobile has complicated road travel permit in the process of running Part, such as high vibration or external impact.Therefore the insulating properties of the internal structure stability of battery, internal each inter-module is proposed Higher requirement.Gasket is typically provided in the housing of existing battery, this gasket is only to the positive pole ear and cathode in battery Lug is isolated, and plays the role of insulation, but gasket is more single to the fixed form of lug, can not more effectively ensure Inside battery structure stablizes, therefore exist and electricity occur due to internal component displacement, breakage relatively under external complex action condition The risk of pond failure.

Utility model content

One of the utility model is designed to provide a kind of insulation spacer, simple in structure, can improve the interior of battery Portion's structural stability.

Another of the utility model is designed to provide a kind of lithium ion battery, and structural stability is high.

In order to achieve the above object, the utility model uses following technical scheme：

On the one hand, a kind of insulation spacer is provided, including using shim body made of isolation material, the shim body tool It is useful for abutting the gasket side of the housing sidewall of battery, the gasket side, which is concavely provided with, supplies the negative lug of the battery to delay The dashpot of punching offers in the shim body and is used to pass through for the positive pole ear of the battery through the shim body Cushion hole, the cushion hole and the dashpot are disposed in the shim body.

As a kind of preferred embodiment of insulation spacer, the shim body includes the first plate and the second plate that are mutually parallel, It is connected between first plate and second plate by connecting plate, the dashpot is located at the side of the connecting plate, described Through-hole is offered on first plate and second plate, two through-holes are coaxial and the cushion hole are collectively formed, and described Cushion hole is located at side of the connecting plate far from the dashpot.

As a kind of preferred embodiment of insulation spacer, the shim body is made of PP.

As a kind of preferred embodiment of insulation spacer, first plate and second plate are rounded, and the two is outer Diameter is equal.

As a kind of preferred embodiment of insulation spacer, the connecting plate is located at the center of first plate and second plate Between the gasket side.

As a kind of preferred embodiment of insulation spacer, first through hole is opened up on first plate, is opened up on second plate Second through-hole.

As a kind of preferred embodiment of insulation spacer, the position of the first through hole and second through-hole corresponds to.

As a kind of preferred embodiment of insulation spacer, first plate, second plate and the connecting plate integrated injection molding Molding.

As a kind of preferred embodiment of insulation spacer, Auxiliary support is also set up between first plate and second plate Plate, the auxiliary support plate are located at the both sides of the cushion hole with the connecting plate respectively.

On the other hand, a kind of lithium ion battery is also provided, including shell, core, block, positive pole ear and negative lug, Gasket is provided in the shell and between the core and the block, the gasket uses the insulation spacer, The positive pole ear runs through the cushion hole, and the negative lug is connected to the housing side of the gasket side and the shell Between wall.

The beneficial effects of the utility model are：By setting dashpot and cushion hole on insulation spacer, lug can be given Reserved placement space, folds in this space for lug, when battery bears foreign impacts, can pass through the deformation of lug in itself Play cushioning effect；By opening up dashpot on gasket side so that the upper and lower ends of negative lug can be by gasket side It is pushed against in housing sidewall, reduces external influence in the active force of core or the coupling part of negative lug and core, prevent Negative lug is damaged；It, can be to positive pole ear and cathode by the way that cushion hole and dashpot are disposed in shim body Lug is effectively isolated, and ensures insulation effect.

Description of the drawings

The utility model is described in further detail below according to drawings and examples.

Fig. 1 is the structure diagram of the insulation spacer of the utility model embodiment.

In figure：

1st, gasket side；2nd, dashpot；3rd, cushion hole；4th, the first plate；41st, first through hole；5th, the second plate；51st, second is logical Hole；6th, connecting plate；

100th, positive pole ear；200th, negative lug.

Specific embodiment

Further illustrate the technical solution of the utility model below with reference to the accompanying drawings and specific embodiments.

As shown in Figure 1, the insulation spacer that the utility model embodiment provides is included using gasket sheet made of isolation material Body, shim body have the gasket side 1 for abutting the housing sidewall of battery, and gasket side 1 is concavely provided with for the negative of battery The dashpot 2 that pole lug 200 buffers offers the positive pole ear 100 being used for for battery through shim body in shim body By cushion hole 3, cushion hole 3 and dashpot 2 are disposed in shim body.By setting dashpot on insulation spacer 2 and cushion hole 3, placement space can be reserved to lug, be folded in this space for lug, foreign impacts are born in battery When, can cushioning effect be played by the deformation of lug in itself；By opening up dashpot 2 on gasket side so that negative lug 200 upper and lower ends can be pushed against by gasket side 1 in housing sidewall, reduce external influence in core or negative lug 200 with the active force of the coupling part of core, negative lug 200 is prevented to be damaged；By the way that cushion hole 3 and dashpot 2 are spaced It is arranged in shim body, positive pole ear 100 and negative lug 200 can be effectively isolated, ensure insulation effect.

Specifically, shim body includes the first plate 4 and the second plate 5 that are mutually parallel, lead between the first plate 4 and the second plate 5 It crosses connecting plate 6 to connect, dashpot 2 is located at the side of connecting plate 6, and through-hole is offered on the first plate 4 and the second plate 5, and two logical Hole is coaxial and cushion hole 3 is collectively formed, and cushion hole 3 is located at side of the connecting plate 6 far from dashpot 2.

In the present embodiment, shim body is made of PP.It, can be with reinforced insulation by the way that shim body is made of PP The impact resistance and corrosion resistance of gasket.Certainly, the material of shim body is not limited to be made of PP, can also select other resistance to The strong isolation material of corrosivity, impact resistance.

In the present embodiment, the first plate 4 and the second plate 5 are rounded, and the outer diameter of the two is equal.By by the first plate 4 Circle is disposed as with the second plate 5, the block of insulation spacer and battery and the contact area of core can be increased, avoid stress collection In.

Specifically, connecting plate 6 is between the first plate 4 and the center of the second plate 5 and gasket side 1.

In order to reduce the materials'use of insulation spacer, first through hole 41 is opened up on the first plate 4, second is opened up on the second plate 5 Through-hole 51.The effect of 41 and second through-hole 51 of first through hole is mainly used for reducing the use of material, reduces the material of insulation spacer Material consumption and weight, and then reduce the weight of entire battery.

Preferably, the position of 41 and second through-hole 51 of first through hole corresponds to.The position of two through-holes is corresponded to, convenient for insulation The processing of gasket reduces difficulty of processing.

In order to simplify production technology, manufacture cost is reduced, insulation spacer is integrally formed, specifically, the first plate 4, second 6 integrated injection molding of plate 5 and connecting plate.

In other embodiments, in order to make the first plate 4 and the second plate 5 always be in parastate, the first plate 4 and the second plate Auxiliary support plate is also set up between 5, auxiliary support plate is located at the both sides of cushion hole 3 with connecting plate 6 respectively.

The utility model embodiment also provides a kind of lithium ion battery, including shell, core, block, positive pole ear and bears Pole lug, shell is interior and gasket is provided between core and block, and gasket uses the insulation spacer of as above any embodiment, With reference to Fig. 1, positive pole ear 100 runs through cushion hole 3, negative lug 200 be connected to gasket side 1 and shell housing sidewall it Between.

It is to be understood that above-mentioned specific embodiment is only the preferred embodiment of the utility model and institute's application technology Principle, in technical scope disclosed in the utility model, what any one skilled in the art was readily apparent that Change or replacement should all be covered within the protection scope of the present utility model.

The utility model is illustrated above by specific embodiment, but the utility model is not limited to these tools The embodiment of body.It will be understood by those skilled in the art that various modifications, equivalent replacement, variation can also be done to the utility model Etc..But these transformation should be all within the protection scope of the utility model without departing from the spirit of the utility model. In addition, some terms used in present specification and claims are not limitation, it is only for convenient for description.This Outside, " one embodiment " of more than many places, " another embodiment " etc. represent different embodiments, naturally it is also possible to by its whole Or part combines in one embodiment.

Claims (10)

1. a kind of insulation spacer, which is characterized in that including using shim body made of isolation material, the shim body has For abutting the gasket side of the housing sidewall of battery, the gasket side is concavely provided with the negative lug buffering for the battery Dashpot, offer in the shim body positive pole ear being used for for the battery through the shim body by Cushion hole, the cushion hole and the dashpot are disposed in the shim body.

2. insulation spacer according to claim 1, which is characterized in that the shim body includes the first plate being mutually parallel It with the second plate, is connected between first plate and second plate by connecting plate, the dashpot is located at the connecting plate Through-hole is offered on side, first plate and second plate, two through-holes are coaxial and the buffering is collectively formed Hole, and the cushion hole is located at side of the connecting plate far from the dashpot.

3. insulation spacer according to claim 2, which is characterized in that the shim body is made of PP.

4. insulation spacer according to claim 2, which is characterized in that first plate and second plate are rounded, And the outer diameter of the two is equal.

5. insulation spacer according to claim 4, which is characterized in that the connecting plate is located at first plate and described Between the center of two plates and the gasket side.

6. insulation spacer according to claim 4, which is characterized in that open up first through hole on first plate, described The second through-hole is opened up on two plates.

7. insulation spacer according to claim 6, which is characterized in that the position of the first through hole and second through-hole It is corresponding.

8. according to claim 2 to 7 any one of them insulation spacer, which is characterized in that first plate, second plate and The connecting plate integrated injection molding.

9. according to claim 2 to 7 any one of them insulation spacer, which is characterized in that first plate and second plate Between also set up auxiliary support plate, the auxiliary support plate is located at the both sides of the cushion hole with the connecting plate respectively.

10. a kind of lithium ion battery, including shell, core, block, positive pole ear and negative lug, which is characterized in that described outer Gasket is provided in shell and between the core and the block, the gasket is using described in any one of claim 1 to 9 Insulation spacer, the positive pole ear run through the cushion hole, the negative lug be connected to the gasket side with it is described Between the housing sidewall of shell.