CN205122318U - A group battery that is used for PTC device of group battery and possesses this device - Google Patents
A group battery that is used for PTC device of group battery and possesses this device Download PDFInfo
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- CN205122318U CN205122318U CN201520858911.8U CN201520858911U CN205122318U CN 205122318 U CN205122318 U CN 205122318U CN 201520858911 U CN201520858911 U CN 201520858911U CN 205122318 U CN205122318 U CN 205122318U
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- electrode layer
- ptc
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- battery
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The utility model provides a group battery that is used for PTC device of group battery and possesses this device, PTC device include the PTC layer, formed at the upper electrode layer of PTC layer upper surface and formed at the lower electrode layer of PTC layer lower surface, the upper electrode layer with the terminal electricity of a battery in the group battery is connected, the lower electrode layer with the terminal electricity of another battery in the group battery is connected, the PTC layer with the upper electrode layer forms fenestrately respectively, the lower electrode layer sees through the window on PTC layer with the window on upper electrode layer to expose the one side on upper electrode layer, the upper electrode layer has the integrative utmost point ear that forms, and the edge that the main part on this upper electrode layer was followed to this utmost point ear extends to the outside, the utmost point ear be used for with the terminal electricity of a battery is connected.
Description
Technical field
The utility model relates to a kind of PTC device for battery pack and possesses the battery pack of this device.
Background technology
The battery pack with multiple cell is applied in the electronic equipments such as camera, video camera, computer more and more, and the many employings of cell can the secondary cell of discharge and recharge.In prior art, in order to protect battery pack not by the impact of the overcurrent produced in repeated charge process and excess temperature etc., and use circuit brake to connect each cell.
As foregoing circuit protection device, usually adopt PTC device (thermal-sensitive electric resistance device).PTC device is such as the electroconductive particle such as disperse black carbon, metallic in the polymer, the PTC composition obtained is formed as sheet and forms PTC device, and fit on the surface of element body and the back side metal electrode, such as metal foil electrode etc.
This PTC device is generally low resistance, and when producing overcurrent or excess temperature, self-heat generation, resistance increase, thus cut off electric current.
When this PTC device is used for battery pack, normally the electrode in PTC device face is connected with the terminal of a battery, the electrode in another face of PTC device is connected with the terminal of another battery.If when these two batteries are horizontal being arranged side by side, after PTC device being placed on two batteries terminal separately, two electrodes can be separately fixed on two batteries by spot welding mode.And if when these two batteries are longitudinal being arranged above and below, then there are the following problems.
As shown in Fig. 7 A ~ Fig. 7 C, when the PTC device of Fig. 7 A being connected between longitudinal battery be arranged above and below, need as shown in Figure 7 B, to carry out spot welding from upper and lower both direction (by the both direction shown in arrow figure) in the drawings, thus PTC is fixed on two batteries terminal separately.Then, as seen in figure 7 c, by PTC device bending twice, thus the top-right battery of Fig. 7 B is turned, be placed on underlying battery.Thus, the connection of the PTC device of the battery pack of longitudinal arrangement is completed.
But, in pinpoint welding procedure as shown in Figure 7 B, because needs welding gun carries out spot welding to PTC device from below, therefore, there is troublesome poeration, problem when taking a lot of work.And shown in the battery pack completing connection as seen in figure 7 c, may there is the problem of dislocation in upper and lower battery in the horizontal.
Patent documentation 1:CN102136402A
Patent documentation 2:CN1697092B
Patent documentation 3:CN1161847C
Patent documentation 4:JP2001102039A
Summary of the invention
For the problems referred to above, the utility model people proposes a kind of being suitable for the PTC device of the battery pack of battery longitudinal arrangement and the battery pack possessing this device.
The utility model provides a kind of PTC device for battery pack, it comprises PTC layer, be formed at the top electrode layer of PTC layer upper surface, and be formed at the lower electrode layer of PTC layer lower surface, described top electrode layer is electrically connected with the terminal of the battery of in described battery pack, described lower electrode layer is electrically connected with the terminal of another battery in described battery pack, it is characterized in that, described PTC layer and described top electrode layer are formed fenestrate respectively, described lower electrode layer exposes to the side of described top electrode layer through the window of described PTC layer and the window of described top electrode layer, described top electrode layer has the lug be integrally formed, this lug extends laterally from the part at the edge of the main body of this top electrode layer, described lug is used for being electrically connected with the terminal of a described battery.
Thus, lower electrode layer exposes from the window of PTC layer and top electrode layer to top electrode layer side, the part exposed of this lower electrode layer is for spot welding, therefore, the spot welding of the position for spot welding of this lower electrode layer and the lug for spot welding of top electrode layer facing to same direction, therefore, it is possible to carry out spot welding from equidirectional to top electrode layer and lower electrode layer, simple to operate, save man-hour.And, only need the battery longitudinal arrangement that the bending of PTC device once can be made in battery pack, therefore, avoid the problem of the battery mutual dislocation of longitudinal arrangement, achieve the densification of battery pack.
For in the PTC device of battery pack, also can be that described lower electrode layer is formed as circular, and described PTC layer is formed as annular, the main body of described top electrode layer is formed as annular, and the main body of described lower electrode layer, described PTC layer and described top electrode layer is configured to concentric circles.
For in the PTC device of battery pack, also can be, the diameter of circular described lower electrode layer is a, the internal diameter of the described PTC layer of annular is b, external diameter is c, the internal diameter of the main body of the described top electrode layer of annular is d, external diameter is e, wherein, c > a and c > e, b < d.
Thus, PTC layer plays and intercepts top electrode layer and surprisingly contact with lower electrode layer and the effect of PTC component failure that causes.
For in the PTC device of battery pack, also can be, the lug of described top electrode layer be formed as strip.
For in the PTC device of battery pack, also can be that the end of the side contrary with the main body of described top electrode layer of described lug is formed as circular, the internal diameter b of PTC layer described in the diameter > of described end.
Thus, the end of the lug after bending rides in the inner periphery of PTC layer, can prevent top electrode layer from contacting with lower electrode layer further and the PTC component failure caused.
The another kind that the utility model provides is for the PTC device of battery pack, it comprises PTC layer, be formed at the top electrode layer of PTC layer upper surface, and be formed at the lower electrode layer of PTC layer lower surface, described top electrode layer is electrically connected with the terminal of the battery of in described battery pack, described lower electrode layer is electrically connected with the terminal of another battery in described battery pack, it is characterized in that, described lower electrode layer is from the outer circumferential of described PTC layer, and be that the outer circumferential of described top electrode layer is exposed to the side of described top electrode layer, described top electrode layer has the lug be integrally formed, this lug extends laterally from the part at the edge of the main body of this top electrode layer, described lug is used for being electrically connected with the terminal of a described battery.
Thus, lower electrode layer exposes from the outer circumferential of PTC layer and top electrode layer to top electrode layer side, the part exposed of this lower electrode layer is for spot welding, therefore, lower electrode layer is used for the spot welding of the position of spot welding and the lug for spot welding of top electrode layer facing to same direction, therefore, it is possible to carry out spot welding from equidirectional to top electrode layer and lower electrode layer, simple to operate, save man-hour.And, only need the battery longitudinal arrangement that the bending of PTC device once can be made in battery pack, therefore, avoid the problem of the battery mutual dislocation of longitudinal arrangement, achieve the densification of battery pack.
For in the PTC device of battery pack, also can be, the main body of described lower electrode layer, described PTC layer and described top electrode layer is all formed as circular, and the main body of described lower electrode layer, described PTC layer and described top electrode layer is configured to concentric circles, the diameter of the main body of top electrode layer described in the diameter > of PTC layer described in the diameter > of described lower electrode layer.
Thus, PTC layer plays and intercepts top electrode layer and surprisingly contact with lower electrode layer and the effect of PTC component failure that causes.
For in the PTC device of battery pack, also can be, the lug of described top electrode layer be formed as strip.
For in the PTC device of battery pack, also can be, described lug is provided with insulating sleeve, described insulating sleeve covers a part for the close described top electrode layer of described lug.
Thus, can prevent top electrode layer from contacting with lower electrode layer further and the PTC component failure caused.
The utility model also provides a kind of battery pack, it possesses: at least two batteries and the PTC device be connected between two batteries, it is characterized in that, described PTC device is described PTC device, described two battery longitudinal arrangements, described lower electrode layer is spot-welded on the upper terminal of the battery of below by the part exposed to the side of described top electrode layer, the described lug of described top electrode layer is spot-welded on the lower terminal of the battery of top, and described lug is bent as opposite with the main body of described top electrode layer.
In above-mentioned battery pack, also can be provided with insulating trip between the described lug after bending and the main body of described top electrode layer.
Thus, can prevent top electrode layer from contacting with lower electrode layer further and the PTC component failure caused.
According to the utility model, owing to PTC device only can be bent once, therefore avoid from below spot welding, longitudinal arrangement carry out to PTC device battery between there is the problems such as dislocation, decrease working hour, and the battery pack of densification can be obtained.
Accompanying drawing explanation
Fig. 1 is the schematic diagram representing that internal battery pack connects.
Fig. 2 A represents the vertical view of the PTC device of an execution mode of the present utility model, and Fig. 2 B is front view.
Fig. 3 represents schematic diagram PTC device being carried out spot welding to battery.
Fig. 4 represents schematic diagram when longitudinally being connected by two batteries.
Fig. 5 A is the vertical view of the PTC device representing another execution mode of the present utility model, and Fig. 5 B is its front view.
Fig. 6 A is the vertical view of the PTC device representing another execution mode of the present utility model, and Fig. 6 B is its front view.
Fig. 7 A is the vertical view representing PTC device of the prior art, and Fig. 7 B represents schematic diagram when longitudinally being connected by two batteries with PTC device of the prior art, and Fig. 7 C represents the schematic diagram after longitudinally being connected by two batteries with PTC device of the prior art.
Symbol description
1 battery
1A negative terminal 2 battery
2A positive terminal
3PTC device
31 top electrode layer
32PTC layer
322 windows
33 lower electrode layers
311 main bodys
312 lugs
313 windows
314 ends
5PTC device
51 top electrode layer
52PTC layer
53 lower electrode layers
511 main bodys
512 lugs
Embodiment
Below, come by reference to the accompanying drawings to be specifically described the PTC device for battery pack of the present utility model and the battery pack that possesses this PTC device.But PTC device of the present utility model and battery pack are not limited to the concrete mode of following explanation.
In the utility model, illustrative battery pack is longitudinally formed by two batteries.As shown in Figure 1, battery 1 is positioned at bottom, and battery 2 is positioned at top, is connected between the upper terminal 1A of the battery 1 and lower terminal 2A of battery 2 by PTC devices in series.Battery pack is constituted by after housing not shown for battery 1,2 loading after connecting.
(execution mode 1)
First, be described with reference to the PTC device for battery pack of Fig. 2 ~ Fig. 4 to execution mode 1 of the present utility model.
Fig. 2 A is the vertical view of the PTC device representing an execution mode of the present utility model.Fig. 2 B is the front view of this hush panel assembly 1.
The PTC device 3 of Fig. 2 A comprises top electrode layer 31, PCT layer 32 and lower electrode layer 33, and this top electrode layer 31, PCT layer 32 and lower electrode layer 33 are stacked in accordance with the order from top to bottom, and bond together.
When overlooking this PTC device 3, as shown in Figure 2 A, the main body 311 being positioned at the top electrode layer 31 of the superiors is formed as circular, has extended to form lug 312 from a part for its outer ledge to radial outside.The inner circumferential of main body 311 defines the window 313 of top electrode layer 31, for exposing PTC layer 32 described later and lower electrode layer 33.Lug 312 is preferably formed to strip, when being installed between two batteries by PTC device, this lug 312 is bent to opposed with main body 311, at this moment, the Design of length of lug 312 is not facing with PTC layer 32, to contact cause short circuit to prevent lug 312 with PTC layer 32.
The PTC layer 32 being positioned at intermediate layer is formed as annular, and the inner circumferential of this PTC layer 32 defines the window 322 of PTC layer 32, for exposing lower electrode layer 33.
The lower electrode layer 33 being positioned at the bottom is formed as circular, exposes from PTC layer 32 and the respective window of top electrode layer 31 to top electrode layer 31 side.
The main body 311 of top electrode layer 31, PTC layer 32, lower electrode layer 33 are mutually stacked with one heart.When setting the diameter of lower electrode layer 33 as a, the internal diameter of the PTC layer 32 of annular is b, external diameter is c, when the internal diameter of the main body 311 of the annular of top electrode layer 31 is d, external diameter is e, meet: c > a and c > e, b < d.
Thus, in the vertical view of Fig. 2 A, PTC layer 32 exposes from the outer circumferential of the main body 311 of the annular of top electrode layer 31, and exposes to the inside from the week of main body 311.Here, preferred PTC layer 32 exposes 1mm from the outer circumferential of top electrode layer 33, and exposes 1mm to the inside from the week of top electrode layer 33.Like this, the overlap of top electrode layer 31 and lower electrode layer 33 or burr can be prevented to be interconnected and to make PTC component failure.
In addition, external diameter c due to PTC layer 32 is greater than the diameter a of lower electrode layer 33, therefore, when overlooking PTC device 3, lower electrode layer 33 does not expose from the outer circumferential of PTC layer 32, can further prevent lower electrode layer 33 and top electrode layer 31 from contacting with each other and the PTC component failure that causes.
In addition, as the method preventing lower electrode layer 33 and top electrode layer 31 from contacting with each other, such as also can in the method etc. of the part configuration insulating sleeve of the main body of the close top electrode layer 31 of lug 312.
Below, the mode that two batteries 1,2 lontitudinal series connects is described to the PTC device 3 of present embodiment with reference to Fig. 3, Fig. 4.
First, be arranged side by side by two batteries 1, about 2, as shown in Figure 3, upward, the positive terminal 2A of battery 2 upward for the negative terminal 1A of battery 1.Here be only illustrate, also can be the positive terminal of battery 1 upward, and the negative terminal of battery 2 is upward.
Then, PTC device 3 is placed in the top of battery 1,2, the main body 311 of lower electrode layer 33, PTC layer 32, top electrode layer 31 is configured with one heart with the axial centre of battery 1, makes lug 312 extend the top of the positive terminal being configured to battery 2 in the mode of at least positive terminal of clad battery 2.At this moment, the part that namely region for spot welding of lower electrode layer 33 exposes from the window of PTC layer 32 and the region for spot welding of top electrode layer 31 and the some face of weld of lug 312 are all towards same direction, be convenient to welding gun and carry out spot welding from same direction, spot welding direction as shown by arrows in FIG..
After configuring PTC device 3, as indicated by the arrows in fig. 3, from the top down PTC device is spoted weld on battery terminal with spot welding machine.
Specifically, as shown in the arrow in the left side in Fig. 3, the lower electrode layer 33 exposed upward from the window 313 of the main body 311 of the window 322 of PTC layer 32 and top electrode layer 31 aimed at by spot welding machine, exerts a force from the top down, spoted weld on the negative terminal 1A of battery 1 by lower electrode layer 33.As shown in the arrow on the right side in Fig. 3, the positive terminal 2A of lug 312 and battery 2 aimed at by spot welding machine, spoted weld by lug 312 on the positive terminal 2A of battery 2, thus, top electrode layer 31 is electrically connected to the positive terminal 2A of battery 2.
Finally, as shown in Figure 4, centered by near the main body 311 of the top electrode layer 31 in PTC device 3 and the intersection of lug 312, with instrument, battery 2 is revolved turnback counterclockwise.Thus, by battery 2, by PTC device, lontitudinal series is connected with battery 1.Wherein, the positive terminal 2A of battery 2 is electrically connected with the lug 312 of the top electrode layer 31 of PTC device, and the negative terminal 1A of battery 1 is electrically connected with the lower electrode layer 33 of PTC device, and lug 312 is opposed with lower electrode layer 33.
Here, causing PTC component failure to prevent mutually opposing lug 312 to be electrically connected with lower electrode layer 33, insulating barrier can be sandwiched between lug 312 and opposed lower electrode layer 33.
PTC device due to present embodiment only needs bending once when being installed in battery pack, therefore, it is possible to ensure that battery 1,2 can not mutual dislocation in a lateral direction, thus make battery 1,2 can both concentric alignment at vertical and horizontal, guarantee the densification of battery pack.
(execution mode 2)
Below, with reference to Fig. 5, execution mode 2 of the present utility model is described.The local detailed identical with execution mode 1 to execution mode 2, and only difference is described.
As shown in Figure 5A, top electrode layer 31 has circular end 314 in one end contrary with main body 311 of lug 312, the diameter of this end 314 is f.Preferably the diameter f of this end 314 is greater than the internal diameter b of PTC layer 32.Here, end 314 is used as the position of carrying out spot welding
This is because, when end 314 is spoted weld on battery 2, and when battery 2 being rotated counterclockwise 180 degree of tops to battery 1, end 314 is opposed with the lower electrode layer 33 that the window 313 of the main body 311 from top electrode layer 31 and the window 312 of PTC layer 32 expose, diameter f due to end 314 is greater than the internal diameter b of PTC layer 32, therefore, the edge of end 314 can ride on the edge of window 322 of PTC layer 32, thus this end 314 of top electrode layer 31 can not contact with the lower electrode layer 33 exposed from window 322.
Here, preferred lug 312 does not contact with lower electrode layer 33 after bending, such as: lug 312 is roughly the same with the diameter of the total length of end 314 and the main body 311 of top electrode layer 31.
When the PTC device of execution mode 2 is used for battery pack, insulating barrier can be sandwiched between lug 312 and opposed lower electrode layer 33.Certainly, if add insulating barrier can prevent PTC component failure better.
(execution mode 3)
Be described with reference to Fig. 6 A, Fig. 6 B PTC device 5 to execution mode 3.
PTC device 5 also has top electrode layer 51, PTC layer 52 and lower electrode layer 53.The lug 512 of strip is extended with to radial outside at the edge of the main body 511 of top electrode layer 51.
The main body 511 of top electrode layer 51, PTC layer 52, lower electrode layer 53 are all formed as circular, and the diameter of lower electrode layer 53 is greater than the diameter of PTC layer 52, and the diameter of PCT layer 52 is greater than the diameter of the main body 511 of top electrode layer 51.Thus, observe from the vertical view of the PTC device 5 of Fig. 6 A, PTC layer 52 exposes from the neighboring of the main body 511 of top electrode layer 51, and lower electrode layer 53 exposes from the neighboring of PTC layer 52.
Here, PTC layer 52 exposes about 1mm from the neighboring of the main body 511 of top electrode layer 51, causes PTC component failure to prevent top electrode layer 51 from contacting with lower electrode layer 53.Further, lower electrode layer 53 exposes about 5mm from the neighboring of PTC layer 52, so that can by spot-welded on battery terminal.Certainly, concrete size can adjust according to actual conditions.
From execution mode 1,2 different, the spot welding position of lower electrode layer 53 is not be positioned at center, but be positioned at edge, therefore, preferably the main body 511 of top electrode layer 51, PTC layer 52, lower electrode layer 53 are configured on the larger negative terminal of battery terminal area, lower electrode layer 53 can be spoted weld on battery.
In addition, in order to prevent top electrode layer 51 to be electrically connected with lower electrode layer 53, preferably at the part configuration insulating sleeve of the close main body 511 of lug 512.Like this, lug 512 all can not be electrically connected with lower electrode layer 53 with after bending before bending.
In addition, preferred lug 512 is being bent to the main body 511 pairs of postpones with top electrode layer 51, not opposed with lower electrode layer 53 by the part that insulating sleeve covers.
Above, be illustrated by the structure of execution mode 1 ~ 3 to PTC device of the present utility model.But PTC device of the present utility model is not limited to above-mentioned concrete form, also the key element in above-mentioned execution mode can be carried out independent assortment.Such as, rounded ends etc. is formed in one end contrary with main body 511 of the lug 512 of PTC device 5.In addition, the size of each several part of PTC device can adjust according to the size of adaptive battery.
Be described in detail execution mode of the present utility model above, the utility model is not limited to above-mentioned embodiment.Only otherwise depart from purport of the present utility model, those skilled in the art can carry out various distortion or amendment, and these variation and modification also belong to protection range of the present utility model certainly.
Claims (11)
1. the PTC device for battery pack, it comprises PTC layer, is formed at the top electrode layer of PTC layer upper surface and is formed at the lower electrode layer of PTC layer lower surface, described top electrode layer is electrically connected with the terminal of the battery of in described battery pack, described lower electrode layer is electrically connected with the terminal of another battery in described battery pack, it is characterized in that
Described PTC layer and described top electrode layer are formed fenestrate respectively, and described lower electrode layer exposes to the side of described top electrode layer through the window of described PTC layer and the window of described top electrode layer,
Described top electrode layer has the lug be integrally formed, and this lug extends laterally from the part at the edge of the main body of this top electrode layer, and described lug is used for being electrically connected with the terminal of a described battery.
2. the PTC device for battery pack according to claim 1, it is characterized in that, described lower electrode layer is formed as circular, described PTC layer is formed as annular, the main body of described top electrode layer is formed as annular, and the main body of described lower electrode layer, described PTC layer and described top electrode layer is configured to concentric circles.
3. the PTC device for battery pack according to claim 2, it is characterized in that, the diameter of circular described lower electrode layer is a, and the internal diameter of the described PTC layer of annular is b, external diameter is c, the internal diameter of the main body of the described top electrode layer of annular is d, external diameter is e
Wherein, c > a and c > e, b < d.
4. the PTC device for battery pack according to claim 3, it is characterized in that, the lug of described top electrode layer is formed as strip.
5. the PTC device for battery pack according to claim 3, it is characterized in that, the end of the side contrary with the main body of described top electrode layer of described lug is formed as circular, the internal diameter b of PTC layer described in the diameter > of described end.
6. the PTC device for battery pack, it comprises PTC layer, is formed at the top electrode layer of PTC layer upper surface and is formed at the lower electrode layer of PTC layer lower surface, described top electrode layer is electrically connected with the terminal of the battery of in described battery pack, described lower electrode layer is electrically connected with the terminal of another battery in described battery pack, it is characterized in that
Described lower electrode layer is from the outer circumferential of described PTC layer and be that the outer circumferential of described top electrode layer is exposed to the side of described top electrode layer,
Described top electrode layer has the lug be integrally formed, and this lug extends laterally from the part at the edge of the main body of this top electrode layer, and described lug is used for being electrically connected with the terminal of a described battery.
7. the PTC device for battery pack according to claim 6, it is characterized in that, the main body of described lower electrode layer, described PTC layer and described top electrode layer is all formed as circular, and the main body of described lower electrode layer, described PTC layer and described top electrode layer is configured to concentric circles, the diameter of the main body of top electrode layer described in the diameter > of PTC layer described in the diameter > of described lower electrode layer.
8. the PTC device for battery pack according to claim 6, it is characterized in that, the lug of described top electrode layer is formed as strip.
9. the PTC device for battery pack according to claim 6, is characterized in that, described lug is provided with insulating sleeve, and described insulating sleeve covers a part for the close described top electrode layer of described lug.
10. a battery pack, it possesses: at least two batteries and the PTC device be connected between two batteries, is characterized in that,
Described PTC device is the PTC device according to any one of claim 1 ~ 9,
Described two battery longitudinal arrangements, described lower electrode layer is spot-welded on the upper terminal of the battery of below by the part exposed to the side of described top electrode layer, the described lug of described top electrode layer is spot-welded on the lower terminal of the battery of top,
Described lug is bent as opposite with the main body of described top electrode layer.
11. battery pack according to claim 10, is characterized in that, are provided with insulating trip between the described lug after bending and the main body of described top electrode layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520858911.8U CN205122318U (en) | 2015-10-30 | 2015-10-30 | A group battery that is used for PTC device of group battery and possesses this device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520858911.8U CN205122318U (en) | 2015-10-30 | 2015-10-30 | A group battery that is used for PTC device of group battery and possesses this device |
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| Publication Number | Publication Date |
|---|---|
| CN205122318U true CN205122318U (en) | 2016-03-30 |
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| CN201520858911.8U Expired - Fee Related CN205122318U (en) | 2015-10-30 | 2015-10-30 | A group battery that is used for PTC device of group battery and possesses this device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106653257A (en) * | 2015-10-30 | 2017-05-10 | 松下能源(无锡)有限公司 | PTC device used for battery pack and battery pack provided with same |
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2015
- 2015-10-30 CN CN201520858911.8U patent/CN205122318U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106653257A (en) * | 2015-10-30 | 2017-05-10 | 松下能源(无锡)有限公司 | PTC device used for battery pack and battery pack provided with same |
| CN106653257B (en) * | 2015-10-30 | 2020-08-07 | 松下能源(无锡)有限公司 | PTC device for battery pack and battery pack having the same |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160330 Termination date: 20211030 |