CN205657138U - Current interruption device , battery cell , battery module, power battery and electric automobile - Google Patents

Abstract

The utility model discloses a current interruption device, battery cell, battery module, power battery and electric automobile. Upset piece (202) that this current interruption device has electrically conductive (201) and links to each other with these electrically conductive (201) and be connected with mutual electricity, and upset (202) with electrically conductive (201) can be broken off the electricity and connect under gas pressure action, be formed with on electrically conductive (201) nick (205), this nick (205) are around being used for the connection the tie point setting of upset (202), and seted up on nick (205) and weakened hole (206).

Description

Current interrupt device, cell, battery modules, electrokinetic cell and electric automobile

Technical field

This utility model relates to field of batteries, in particular it relates to a kind of current interrupt device, use this electricity Stream interrupts the cell of device, includes the battery modules of this cell, includes the dynamic of this battery modules Power battery and the electric automobile including this electrokinetic cell.

Background technology

Battery all plays an important role in all trades and professions as energy-storage units, and such as electrokinetic cell is widely used in newly The fields such as energy automobile, wherein can have in the battery bag of electrokinetic cell and mutually be gone here and there by multiple cells Join or and be unified into battery modules to realize the work of discharge and recharge.Wherein, electrokinetic cell in charge and discharge process, Generally by BMS (battery management system) monitoring voltage and the change calculations charging state of electric current.If Voltage sample goes wrong, it is possible to cause over-charging of battery, for ternary system, such as mistake Fill the danger reaching the most more to there will be cells burst blast.

Existing technical scheme: the monitoring to the voltage and current of battery, by Current integrating method and open circuit Voltage method calculates battery electric quantity, and controls the charge and discharge management of battery with this.But there is also deficiency, such as Battery voltage sampling or current sample lost efficacy, or software failure, caused battery to charge not for a long time To controlling, particularly in the case of charging pile charges, when charging pile and battery manager communication failures, Overcharging uncontrollable, over-charging of battery to a certain extent, can cause battery blow-up the most on fire from explosion.

Therefore it provides a kind of current interruptions technology that can self can force to disconnect has positive effect.

Utility model content

The purpose of this utility model is to provide a kind of current interrupt device, this current interrupt device structure letter Single, highly sensitive.

The purpose of this utility model also resides in a kind of cell using this current interrupt device of offer, makes By the battery modules of this cell, use the electrokinetic cell of this battery modules and use this electrokinetic cell Electric automobile.

To achieve these goals, this utility model provides a kind of current interrupt device, and this current interruptions fills Put and there is electric-conductor and be connected the flip piece being electrically connected to each other with this electric-conductor, and described flip piece with Described electric-conductor can disconnect electrical connection under gas pressure, described electric-conductor is formed with indentation, this quarter Trace is around arranging for connecting the junction point of described flip piece, and offers on described indentation and weaken hole.

Alternatively, weaken hole described in be multiple and arrange along described indentation interval.

Alternatively, described flip piece is connected by boss Welding Structure with described electric-conductor, and this boss welds Structure includes boss, the connecting hole accommodating this boss and the annular welds between this boss and connecting hole Point.

Alternatively, described flip piece is formed as the first laminated structure, and this first laminated structure is formed Stating connecting hole, described electric-conductor is formed as the second laminated structure, this second laminated structure is formed described Boss.

Alternatively, described indentation is oval.

Alternatively, described boss is circular, and described indentation be oval, and the center of circle of described indentation and Stagger along the long axis direction of described ellipse in the center of circle of described boss.

This utility model also provides for a kind of cell, including shell, accommodate battery core in the enclosure and The electrode terminal of this battery core electrical connection and encapsulate the cover plate of described shell, described electrode terminal is arranged on institute Stating on cover plate, described cell also includes the current interrupt device that this utility model provides, in this electric current Disconnected device electrically connects with described electrode terminal, and described current interrupt device and the inside gas of described shell Body connects.

Alternatively, described electrode terminal includes through described cover plate the pole that electrically connects with described battery core, Described electric-conductor is connected to be electrically connected to each other on the outer end of described pole, the outer peripheral edge phase of described flip piece Described cover plate is fixed.

Alternatively, described flip piece is coaxially disposed with described pole, and described electric-conductor is relative to described pole Axis be obliquely installed.

Alternatively, the outer end end face of described pole being formed with receiving hole, the outer peripheral edge of described electric-conductor is solid It is scheduled on the inwall of this receiving hole.

Alternatively, described pole and described cover plate are fixing to be connected, described pole is formed connect described outside The internal inducing QI duct with described current interrupt device of shell.

This utility model also provides for a kind of battery modules, and being provided with this utility model in this battery modules provides Cell.

This utility model also provides for a kind of electrokinetic cell, including inclusion and the battery mould being arranged in this inclusion Group, the battery modules that described battery modules provides for this utility model.

This utility model also provides for a kind of electric automobile, and this electric automobile is provided with what this utility model provided Electrokinetic cell.

By technique scheme, weaken hole owing to being formed with on the indentation on electric-conductor, therefore can make Obtaining indentation when by gas pressure first from weakening hole except breaking, simple in construction is highly sensitive.

Other feature and advantage of the present utility model will give in detailed description of the invention part subsequently in detail Explanation.

Accompanying drawing explanation

Accompanying drawing is used to offer and is further appreciated by of the present utility model, and constitutes one of description Point, it is used for explaining this utility model together with detailed description below, but is not intended that this practicality Novel restriction.In the accompanying drawings:

Fig. 1 is the decomposed schematic perspective view of this utility model the first embodiment medium power battery；

Fig. 2 is the plan structure signal of adjacent two cells in this utility model the first embodiment Figure；

Fig. 3 is the sectional structure schematic diagram that the line A-A from Fig. 2 intercepts；

Fig. 4 is the decomposition texture schematic diagram of current interrupt device in this utility model the first embodiment；

Fig. 5 is flip piece and the decomposition texture schematic diagram of electric-conductor in this utility model the first embodiment；

Fig. 6 is the knot of the section view under flip piece and electric-conductor confined state in this utility model the first embodiment Structure schematic diagram；

Fig. 7 is the plan structure schematic diagram of electric-conductor in this utility model the first embodiment；

Fig. 8 is the sectional structure schematic diagram of another embodiment of pole during this utility model first is implemented；

Fig. 9 is the perspective view of another embodiment of pole in this utility model the first embodiment；

Figure 10 is the section view knot of pole and another embodiment of ceramic ring in this utility model the first embodiment Structure schematic diagram；

Figure 11 is that in this utility model the first embodiment, pole is tied with the three-dimensional of another embodiment of ceramic ring Structure schematic diagram；

Figure 12 is the knot of adjacent two another embodiments of cell in this utility model the first embodiment Structure schematic diagram；

Figure 13 is the perspective view of this utility model the second embodiment medium power battery；

Figure 14 is the perspective view of cell in this utility model the second embodiment；

Figure 15 is the exploded perspective structural representation of cell in this utility model the second embodiment；

Figure 16 is that in this utility model the second embodiment, the exploded perspective structure of flip piece and electric-conductor is shown It is intended to；

Figure 17 is the broken section structural representation of cell in this utility model the second embodiment；

Figure 18 is the broken section structural representation of cell in this utility model the 3rd embodiment；

Figure 19 is the theory diagram of the control system that this utility model preferred implementation provides；

Figure 20 is the decomposition texture schematic diagram of the cell of a kind of embodiment of this utility model；

Figure 21 is the broken section structural representation after the cell in Figure 20 assembles；

Figure 22 is the broken section structural representation of cell in this utility model the 4th embodiment；

Figure 23 is the structural representation of current interrupt device in this utility model the 4th embodiment；

Figure 24 is the broken section structural representation of cell in this utility model the 5th embodiment.

Detailed description of the invention

Below in conjunction with accompanying drawing, detailed description of the invention of the present utility model is described in detail.It is to be understood that It is that detailed description of the invention described herein is merely to illustrate and explains this utility model, is not used to limit This utility model processed.

In this utility model, in the case of illustrating on the contrary, the noun of locality of use as " upper and lower, Left and right " typically define on the basis of the page of respective drawings, " inside and outside " refers to accordingly Component outline interior and outer.

As shown in Fig. 1 to Figure 24, this utility model provides current interrupt device, cell, electricity Pond module and electrokinetic cell and the technical scheme of electric automobile.Wherein current interrupt device is arranged on monomer electricity Chi Zhong, multiple cells become battery modules by serial or parallel connection, it is possible to shape in inserting battery bag Become electrokinetic cell.Additionally, in addition to electrokinetic cell field, the various technical schemes provided in this utility model Can also be widely used in other field of batteries.Specifically, this utility model passes through first to the 5th Embodiment place of matchmakers relates to cell 100,1100,2100,3100,4100, is directed to electricity Stream interrupts device 200,1200,3200,4200 and explosion-proof valve 2200, and additionally this utility model also relates to And one has electrokinetic cell charge and discharge protecting system.Below in conjunction with accompanying drawing, each embodiment is carried out Describe in detail.

First, as shown in Fig. 1 to Figure 24, each embodiment of this utility model is provided which a kind of battery Module, including multiple cells 100,1100,2100,3100,4100, wherein, cell Can include shell, accommodate electrode terminal that battery core in the enclosure electrically connects with this battery core 101,1101, 2101,3101,4101 and the cover plate 102,1102,2102,3102,4102 of package casing, its Middle electrode terminal is arranged on the cover board, for the input and the output that complete electric current.Wherein, cell Inside include current interrupt device 200,1200,3200,4200 or explosion-proof valve 2200, this current interruptions Device or explosion-proof valve electrically connect with electrode terminal, therefore by the effect of current interrupt device, can control The input of the electric current of electrode terminal processed and output.I.e. current interrupt device or explosion-proof valve are in single cells For the state of battery core conducting under conventional sense, now electrode terminal can be normally carried out the input of electric current and defeated Go out, to complete the charge/discharge operation of cell, and under precarious position, such as when overcharging occurs in battery, Current interrupt device or explosion-proof valve can interrupt electric current input and the electric current output of electrode terminal, thus keep away Exempt from battery and problems such as overcharging occurs.Accordingly, as important safety measure, current interrupt device reliable Property is most important, i.e. needs current interrupt device quickly to respond.It addition, in each embodiment, Wherein current interrupt device or explosion-proof valve can also be fixed relative to cover plate, i.e. current interrupt device or explosion-proof Valve can be directly anchored on cover plate, it is also possible to is fixed on and is arbitrarily connected with cover plate or is relatively fixed with cover plate Parts on, such as be arranged on arrange with cover plate on electrode terminal on.

In this utility model, current interrupt device or explosion-proof valve in each embodiment are induction air pressure Frame for movement, specifically, the enclosure gas communication of current interrupt device and cell also can Effect disconnects the electric current flowed through under pneumatic pressure.Specifically can be connected by the parts of breaking inner and interrupt The transmission of electric current, thus cut off the discharge and recharge of battery in time.The air pressure source wherein utilized is: work as example As when overcharging occurs in battery etc. during precarious position, inside battery can produce gas and then make enclosure Air pressure raises, or in use occurs extremely causing battery temperature to raise when battery and make battery Air pressure inside raises, thus produces driving current interrupt device or the Pneumatic pressure power of explosion-proof valve.

As a example by such as first embodiment of Fig. 1 to Figure 12, this current interrupt device has electric-conductor 201 And be connected the flip piece 202 being electrically connected to each other with this electric-conductor 201, and flip piece 202 and conduction Part 201 can disconnect electrical connection under gas pressure, wherein in the different embodiments in this utility model, The mode disconnecting electrical connection can be different, can be wherein that the junction point between electric-conductor and flip piece breaks Open, such as, pull solder joint therebetween to realize the disconnection of electrical connection, alternatively, it is also possible to be the two In at least one disconnection itself, such as realize this by processing the indentation of weakness on corresponding component The disconnection of body structure, thus realize the disconnection of electrical connection.I.e., it is achieved at gas pressure in this utility model Lower disconnection frame for movement cuts off the purpose of the transmission of electric current.

So, as a example by the first embodiment, when overcharging occurs in such as battery, inside battery can produce Gas air pressure then raises, and now under certain gas pressure, flip piece 202 is by rotary movement Disconnect with electric-conductor 201 and electrically connecting, thus interrupt electrode terminal 101 and extraneous circuit, stop battery Charging, thus avoid inside battery air pressure continue raise, it is ensured that the safety of battery.

In the present embodiment, electrode terminal 101 includes the pole 104 electrically connected with battery core, the most logical Leading-out piece is connected with battery core in crossing, wherein pole 104 pass from cover plate 102 with by electric current from shell Draw.Wherein, in the present embodiment, current interrupt device 200 can be arranged on pole 104. The air pressure of inside battery so directly can be experienced by pole 104, highly sensitive, additionally can avoid Separately current interrupt device 200 is attached with electrode terminal, convenient processing.

Wherein, owing to, in the field of such as electrokinetic cell, needing the electric current passed through bigger, it is therefore desirable to Ensure that the Welding Structure of electric-conductor 201 and flip piece 202 is stable, it is to avoid big current fusing Welding Structure. So, in the present embodiment, as shown in Figure 5 and Figure 6, flip piece 202 passes through with electric-conductor 201 Boss Welding Structure is connected, and this boss Welding Structure includes boss 203, accommodates the connection of this boss 203 Hole 204 and the annular solder joint 217 between this boss 203 and connecting hole 204.I.e. boss 203 Being positioned on flip piece 202 with the one in connecting hole 204, another kind is positioned on electric-conductor 201.Therefore Ensure that annular solder joint 217 can stably will be received in boss 203 firm welding in connecting hole 204, And the circulation area that can increase electric current ensures passing through of big electric current.Specifically, as a kind of embodiment, Boss 203 can be formed on electric-conductor 201, and connecting hole 204 can be formed on flip piece 202, More specifically, flip piece 202 is formed as the first laminated structure, this first laminated structure is formed with connection Hole 204, electric-conductor 201 is formed as the second laminated structure, and this second laminated structure is formed with boss 203. In other embodiments, the two can be with transposition.Additionally in some modes, it is also possible to use and swash Light penetrates the modes such as weldering and flip piece 202 and electric-conductor 201 is welded.

Wherein, in the present embodiment, the mode realizing disconnecting electrical connection between flip piece and electric-conductor can To be realized by indentation, i.e. process intensity less than the weak point in other regions in appropriate section, wherein in order to Completing being fully disconnected of electric-conductor and flip piece, indentation is usually around electric-conductor and the connection of flip piece Point, the welded loop configuration of the most above-mentioned boss.Thus breaking by electric-conductor or flip piece itself Coming and realize the disconnection of electrical connection, wherein indentation can be formed on flip piece and can also be formed at electric-conductor On, in the present embodiment, electric-conductor 201 being formed with indentation 205, this indentation 205 is around being used for Connect the junction point of flip piece 202, i.e. the annular indentation around boss 203 is set at electric-conductor 201. So, when the air pressure inside of battery rises, the air pressure being subject to, indentation 205 can be promoted to be pulled off, So that be scored 205 around electric-conductor 203 part can depart from electric-conductor 201 with flip piece 202, Thus realize the disconnection of electric current.In other embodiments, indentation can also be formed on flip piece 202.

As it is shown in fig. 7, for the ease of breaking indentation 205, it is preferable that indentation 205 can be oval. So when by gas pressure, owing to the curvature of profile is different, the region that curvature is bigger is more easy to concentrate and answers Power and stress are relatively big, so can first be torn, thus increase the sensitivity that indentation 205 is pulled off. Further, in the present embodiment, boss 203 is circular, and the circle of the indentation 205 of ellipse Stagger along the long axis direction of this ellipse in the center of circle of the heart and boss 203.So so that oval major axis The region unbalance stress at two ends, consequently facilitating break indentation 205 from partial points, and then promotes indentation 205 Sensitivity.

It is coaxially disposed furthermore it is also possible to arrange electric-conductor flip piece 202 with electrode terminal 101, electric-conductor 203 are obliquely installed relative to the axis of electrode terminal 101.As such, it is possible to make the indentation of lower position Can first be pulled off, thus increase the sensitivity that indentation 205 is pulled off.Further, when indentation 205 During for ellipse, the axis of the major axis and electric-conductor that can design ellipse is obliquely installed, when electric-conductor is pacified Also tilt with the axis of pole when being contained on pole 104.Consequently facilitating the district that the curvature of major axis end is bigger First territory is torn, thus ensures that indentation 205 can normally be broken when needed, it is ensured that current interruptions The normal work of device 200.

It addition, in order to be further ensured that indentation 205 is pulled off, it is also possible in as shown in Figure 7, design Offer on indentation 205 and weaken hole 206.So that indentation 205 is prone to weaken quilt at hole 206 from this Breaking, the size weakening hole 206 therein and number can set according to practical situation.Preferably, Weaken hole 206 to be multiple and arrange along indentation 205 interval.In addition to abated effect, when indentation is designed in Time on electric-conductor 201, this weakens hole 206 and is also used as inducing QI and is used so that thus inside battery Gas can weaken hole 206 by gas pressure on flip piece 202 by this.

Wherein, when current interrupt device 200 is arranged on pole 104, electric-conductor 201 is connected to pole On the outer end end face of post 104, the outer peripheral edge of flip piece 202 is fixed relative to cover plate 102.So, exist Under gas pressure, using the outer peripheral edge of flip piece 202 as the strong point, it is formed at the quarter on electric-conductor 201 Trace 205 can be pulled off.It addition, so that flip piece 202 can be by gas pressure, can be by The outer peripheral edge of flip piece seals, and is tightly connected on the cover board for example with welding manner, so that internal gas Flip piece force can be broken indentation 205 by pressure.The most herein and similar describe in outer end, the inner It is to define along the axial direction of pole relative to shell, and relative to " inside and outside " of ring-shaped article, It is then radially to define relative to the center of this ring-shaped article such as outer peripheral edge.

In order to ensure electric-conductor 201 and pole 104 fixing in the case of, indentation 205 thereon can also Enough it is pulled off, it is preferable that on the outer end end face of this pole 104, be formed with receiving hole 218, electric-conductor 201 Outer peripheral edge be fixed on the inwall of this receiving hole.So, electric-conductor 201 can be entered by annular profile Line stabilization is fixed, and the region within indentation 205 is not connected with pole 104 it is thus possible in external force, Such as it is pulled off under the pulling force of flip piece 202 or gas direct pressure effect.

In this utility model, current interrupt device 200 has multiple with the mode of inside battery gas communication, In the present embodiment, pole 104 is formed with connection enclosure and the leading of current interrupt device 200 Pore road.Thus, directly apply air pressure by the internal structure of pole 104 to current interrupt device.Make Obtain structure simpler.

Wherein, above-mentioned inducing QI duct includes two kinds of gas ports 103 in the present embodiment, wherein first Plant gas port 103 and be used for connecting above-mentioned receiving hole 218 and enclosure, i.e. directly to electric-conductor 201 Press and thrust indentation 205.That is, inducing QI duct includes for connecting above-mentioned receiving hole 218 and shell Internal gas port 103.The second gas port 103 is used for connecting flip piece 202 and enclosure, from And break indentation 205 to flip piece pressure.Wherein so that flip piece 202 stress improved efficiency, This gas port 103 can be multiple around receiving hole.Therefore, at the common work of two kinds of gas ports 103 Under with, the sensitivity of current interrupt device can be increased.

The most specifically, as shown in Figure 2 and Figure 8, pole 104 is fixing with cover plate 102 to be connected, so that Obtain electrode terminal structure to consolidate.Wherein, the outer end periphery of pole 104 has radially boss 105, this footpath It is fixedly connected on cover plate 102 to boss 105, the second gas port 103 can be processed thereon, make Obtain gas and flow to flip piece 202.Additionally, in the present embodiment, the first gas port 103 is along week In being formed at pole 104.That is, the gas port 103 being positioned on radial direction boss 105 is for flip piece 202 pressures, electric-conductor 201 then can directly be pressed by the gas port 103 below receiving hole 218. As it is shown in figure 9, on the radial direction boss 105 of pole 104 in this utility model embodiment and body all It is formed with gas port 103, wherein the first gas port 103 on body and the receiving hole 218 on end face Connect, and number is four and arranges the most at equal intervals.In other embodiments, the first inducing QI The number in hole 103 can also be other quantity, and this utility model is without limitation.

As shown in Fig. 2, Fig. 3, Fig. 8 and Figure 10, in order to avoid cover plate is charged, it is preferable that pole 104 Needing while being the fixing connection of cover plate and cover plate insulate, therefore, pole 104 is fixedly connected on sealing It is connected on the ceramic ring 207 of cover plate 102, such as, is attached by Ceramic brazing.So, compare The insulation that plastics, rubber etc. realize, reliability and weatherability are higher, are possible not only to realize current interruptions dress The robust seal put connects, additionally it is possible to realize the insulation of the two.Specifically, the outer end periphery of pole 104 Having radially boss 105, the inner edge of ceramic ring 207 has the radial direction supporting this radial direction boss 105 of connection Supporting 208, wherein radially boss 105 can embed in ceramic ring 207 and be connected with radially supporting 208, The thinner thickness i.e., radially supporting 208 accommodates space to form the stepped ramp type embedded for pole 104.

As shown in figure 11, in another embodiment of present embodiment, it is different from above by pole On offer the ventilating mode of gas port 103, radially boss 105 and radially support 208 and be respectively the most circumferentially Spaced multiple, i.e. radially boss 105 is multiple and circumferentially spaced setting, radially supports 208 Also it is multiple and circumferentially spaced setting, and multiple radial direction boss and multiple radial direction support one_to_one corresponding. As such, it is possible to realize leading to by the interval between adjacent radial boss 105 and radially supported between 208 Gas, structure is simpler ingenious, easy to process, it is not necessary to additionally offer inducing QI duct on pole 104, Thus do not interfere with pole 104 and assemble the region of electric-conductor 201, can by the size of electric-conductor 201 Bigization, thus increase indentation size and ensure the sensitivity broken.In this embodiment, radially boss 104 For three be equally spaced, to take into account connective stability and breathability.In other embodiments, radially The number of boss can also be other quantity, such as four or more.

Wherein in both embodiments, the outer face of ceramic ring 207 is all formed as having inner ring and outer ring Hierarchic structure, pole 104 embed be connected on inner ring.The difference is that, monoblock type radially boss In the embodiment of 105, inner ring is formed as overall ring-type radial direction and supports, and at split type radial direction boss In embodiment, inner ring then forms above-mentioned multiple spaced radial direction and supports 208, so that overall Structure is compacter, connects more firm.

In the present embodiment, in order to set up current flow path with the external world, it is preferable that ceramic ring 207 Outer face on be sealedly connected with conducting ring 216, be specifically connected on outer ring, outside flip piece 202 Periphery is fixedly connected on this conducting ring 216, i.e. flip piece 202 is connected to ceramic ring 207 by conducting ring On, flip piece can be set up current loop with the external world by conducting ring.Wherein in order to avoid leading after breaking indentation Electricity ring still electrically connects with pole, and loses the effect of current interruptions.Preferably, conducting ring 216 seals Be connected on the outer ring of ceramic ring insulate with pole, i.e. pole 104 and conducting ring 216 passes through ceramic ring Insulation.It addition, conducting ring 216 is sealedly connected on ceramic ring so that the outer peripheral edge of flip piece obtains Seal, so that enclosure air pressure can act on flip piece without leaking gas.

Wherein, in order to realize being stably connected with of conducting ring and flip piece, the outer face of conducting ring 216 is formed Having L-type seam, its inner face is for connecting the outer ring of ceramic ring.The outer peripheral edge of flip piece 202 embeds props up Support is in this L-type seam, and the block 210 that this outer peripheral edge sets this flip piece 202 by cover seals even It is connected on this L-type seam.Thus while the stable sealing assembling realizing flip piece 202, to electricity Stream interrupts device 200 and can play a protective role.It addition, conducting ring 216 can be by being connected with block Or the electrode leading-out sheet being joined directly together and the external world set up current loop, such as with adjacent cell Between 100, or all can be connected by electrode leading-out sheet between adjacent cell module.

It is tightly connected ceramic ring 207 and cover plate 102 for convenience, it is preferable that the inner of ceramic ring 207 Being sealedly connected with transition rings 209 on face, this transition rings 209 can pass through Ceramic brazing with ceramic ring 207 It is connected, and this transition rings 209 is sealedly connected on cover plate 102.Wherein transition rings 209 can also make Obtain ceramic ring 207 and cover plate 102 interval is arranged.Owing to ceramic ring 207 does not directly assemble with cover plate 102, Avoid cover plate 102 and be high temperature when ceramic ring carries out soldering, additionally will not be to the face of ceramic ring 207 Amass and cause restriction owing to needs and cover plate 102 directly assemble, and be not required to ceramic ring 207 is carried out spy Different design, manufactures and easy to assembly.

Wherein, as shown in Figure 8, it is preferable that transition rings 209 has the inner ring forming Z-type structure with outer Circle, cover plate 102 is formed for the through hole that pole 104 passes, and the end face of this through hole is ledge structure, mistake The inner ring embedding crossing ring is supported in ledge structure.The most in fig. 8, being positioned at lower section and embed logical of inner ring Kong Zhong, thus the contact area increasing the two ensures stable connection.

Therefore, in the present embodiment, in order to realize the work of current interrupt device, flip piece 202 Outer peripheral edge needs being sealed, is specifically sealedly connected with ceramic ring between outer peripheral edge and the cover plate of flip piece 207, thus realize the stable of current interrupt device and work reliably by the sealing of ceramic structure.? In this ceramic seal structure, in particular by cover plate and transition rings, transition rings and ceramic ring, ceramic ring And each self sealss between conducting ring and conducting ring and flip piece so that the air pressure of enclosure can have Effect acts on current interrupt device, so that current interrupt device reliable operation.When assembling, In order to ensure the sealing of current interrupt device, ceramic ring 207 respectively with conducting ring 216, pole 104 And be tightly connected by Ceramic brazing between transition rings 209.First i.e. this can be constituted one solely Vertical assembly, is then being assembled on cover plate 102 by transition rings 209 is led to Laser Welding, assembling side Just without directly pottery being welded on the cover plate of soldering.It addition, electric-conductor 201 and pole 104 can be adopted Being connected by Laser Welding, flip piece and electric-conductor can use laser fuU penetration welding or above-mentioned boss Welding Structure Being connected Deng welding manner, block 210 can be connected by Laser Welding with conducting ring.Additionally, pole 104 Can be laser welded with the lead-out tablet of battery core, thus complete overall current interrupt device assembling and Work.

The structure of the above-mentioned current interrupt device mainly described in the first embodiment, is explained below The arrangement of the current interrupt device in one embodiment.

In order to ensure that the normal of the driving current interrupt device of above-mentioned air pressure works timely, can be by electricity Stream interrupts the relatively big of the size design of device, so and in the case of air pressure is immutable, is subject to by increase Power area increases pull-off force.The area such as designing flip piece promotes more greatly the pull-off force of flip piece. In the present embodiment, as it is shown in figure 1, design current interrupts device 200 extends radially out cover plate 102, Thus increase size.Now in battery modules, cell 100 is multiple, at neighboring unit cell Between 100, in order to avoid the current interrupt device 100 extended hinders on neighboring unit cell 100 Electrode terminal, it is preferable that current interrupt device 200 on the bearing of trend of short transverse and/or cover plate with Adjacent electrode terminal mutually staggers.So can make full use of cover plate 102 and be not provided with electrode terminal 101 Region so that the current interrupt device of protrusion will not interfere with the structure on adjacent cover plate, fully saves Space in battery bag, improves the energy density in inclusion.Wherein it should be noted that this utility model Herein and following between neighboring unit cell, current interrupt device and adjacent electrode terminal, or Person's electrode terminal each means adjacent feature between different monomers battery with the implication of adjacent electrode terminal Connect rather than the connection of adjacent feature on same cell.

In the present embodiment, current interrupt device 200 extends at cover plate with adjacent electrode terminal 101 Mutually stagger on direction.In other embodiments, the two can also the most mutually stagger.

As a kind of embodiment, as it is shown in figure 1, between adjacent cell 100, current interruptions It is connected by L-type connector 214 between device 200 and adjacent electrode terminals, this L-type connector 214 Having covering part 211 and lead division 212, covering part 211 covers and is connected in current interrupt device 200, Lead division 212 extends to adjacent electrode terminal with adjacent thereto.Wherein, L-type as described in Figure 1 First inflection structure can extend to align then on the bearing of trend of cover plate with adjacent electrode terminal Re-extending into this electrode terminal, in other embodiments, first L-type connector can also extend to phase On adjacent cover plate, then extending to electrode terminal, thus realizing the electrical connection of the two.

As another kind of embodiment, as in figure 2 it is shown, between adjacent cell 100, in electric current Disconnected device 200 includes the block 210 covering flip piece 202, and this block 210 extends to along cover plate 102 Align with adjacent electrode terminal, i.e. there is covering part 211 and the lead division 212 of straight line, and It is connected with adjacent electrode terminal by linear I type connector 215.This I type connector 215 is also May be used for connecting the electrode terminal being not provided with current interrupt device 200 between other cells 100 101, so, by the block 210 of this shape, only need to make so that basic in integral battery door module With this kind of connector.

It is different from the above-mentioned embodiment shown in Fig. 2, as shown in figure 12, it is also possible to by increasing monomer The mode of battery 100 carrys out adaptive bigger current interrupt device.Specifically, at neighboring unit cell 100 Between, it is provided with the width of cell 100 of current interrupt device 200 more than being not provided with current interruptions The width of the cell of device 200, and current interrupt device 200 is close to the width edge of cover plate 102 Edge extends, thus is capable of the adaptation to current interrupt device 200 equally.

Width additionally, due to corresponding cell is relatively big so that current interrupt device non-bulging with Cover plate, therefore so that adjacent electrode terminal is mutually aligned.The most equally avoid extending lid Other structures such as the Welding Structure on connected cover plate 102 are caused shadow by the current interrupt device 200 of plate 102 Ring.And preferably, so that current interrupt device and adjacent electrode terminal are by linear I Type connector 215 is connected.

The most in use, although increase the width of cell 100, but do not increase battery core Capacity, i.e. the battery core capacity being provided with in the cell 100 of current interrupt device 200 be not provided with Battery core capacity in the cell 100 of current interrupt device is identical, thus avoids depositing under same module At the cell of different capabilities, and avoid the impact on BMS.Wherein, owing to battery core capacity is identical, The size exceeded of enclosure can use dividing plate to be filled with, i.e. is filled with dividing plate around battery core. So that the assembling Stability Analysis of Structures of battery core.Wherein consider the size of battery modules and the size of monomer, The ratio of the volume of battery core and dividing plate can be 1:1-2:1, and wherein, dividing plate can be by the material of electrolyte resistance Matter is made.

It addition, consider, at multiple lists of same module from current interruptions effect and cost and assembling In body battery 100, the quantity of cell of current interrupt device 200 is set less than three； Preferably, the quantity of the cell arranging current interrupt device 200 is 3；Preferably, electricity is set Stream interrupts the cell that cell is end and the central part being positioned at battery modules of device 200； Wherein, if battery modules includes n the cell being arranged in order, then the monomer electricity of the end of pond module Pond is the 1st cell and n-th cell of battery modules of battery modules；When n is odd number Time, the cell of the central part of described battery modules is the (n+1)th/2 cell of battery modules； When n is even number, the cell of the central part of described battery modules is the n-th/2 of battery modules Cell or the n-th+2/2 cell, wherein n >=3.

Above describe this utility model the first embodiment provide current interrupt device, cell, Battery modules, without departing from this utility model conceive under, the feature in the first embodiment such as, boss Welding Structure, oval indentation, ceramic ring etc. all can apply with in other following embodiments, under Face combines Figure 13 to Figure 17 and introduces the electrokinetic cell that this utility model the second embodiment provides.

As shown in Figure 13 and Figure 14, the second embodiment of the present utility model provides a kind of cell 1100, this cell 1100 includes that shell, receiving battery core in the enclosure electrically connect with this battery core Electrode terminal 1101 and the cover plate 1102 of package casing, described electrode terminal 1101 is arranged on cover plate For input and the output of electric current on 1102.Wherein this monomer simple 1100 also include with in shell The side being arranged on electrode terminal in the current interrupt device 1200 of portion's gas communication, with the first embodiment Unlike formula, current interrupt device 1200 arranges on the cover board and connects with the internal gas of shell, Wherein this current interrupt device 1200 has electric-conductor 1201 and is connected with mutually with this electric-conductor 1201 The flip piece 1202 of electrical connection, flip piece 1202 and electric-conductor 1201 can disconnect electricity under gas pressure Connect.That is, the operation principle of this current interrupt device 1200 and the current interruptions in the first embodiment Device is essentially identical, is all to realize the upset of flip piece by the air pressure experiencing in cell and disconnect electricity Road.

Wherein, owing to being not arranged on electrode terminal, electric-conductor 1201 has and is connected with flip piece 1202 Body 1299 and from this body 1299 extend to electrode terminal 1101 and with this electrode terminal 1101 connecting portions 1298 being connected, therefore by the second embodiment, by current interrupt device 1200 Arrange on the cover board, so can avoid increasing the height of electrode terminal 1101, thus be covered by utilization The length space of plate and increase battery capacity density.

As shown in Figure 15 to Figure 17, in the present embodiment, the body 1299 of electric-conductor 1201 with The internal gas connection of shell and be formed with indentation 1205, this indentation 1205 connects upset around being used for The junction point of part 1202 is arranged.It is thus possible to break this indentation under air pressure inside effect, thus disconnect Electrical connection between flip piece and electric-conductor.Further, indentation 1205 is provided with passage 1206. So, not only by passage 1206, air pressure can be applied on flip piece 1202, and lead to Cross flip piece pulling force actual to indentation, and the position at this passage 1206 can be facilitated to break housing 1205, play the effect of the sensitivity promoting flip piece 1202, now indentation can also be arranged on upset On part.Wherein passage 1206 can be multiple and arrange along indentation 1205 interval.Further for indentation With features such as passages, the feature in the first embodiment all may apply in present embodiment.At it In his embodiment, the body of electric-conductor and flip piece can be respectively arranged with indentation.So, when When the air pressure of enclosure constantly rises, in addition to the indentation broken on electric-conductor carrys out interruptive current, also may be used To continue the indentation breaking on flip piece, now the gas of inside battery can fill at flip piece to leaking Go out, and avoid the air pressure in the shell of cell to continue to increase and ensure.Furthermore it is also possible to allow battery Gas sensor induction alarm in inclusion or cut-out circuit.This part will be discussed in detail in follow-up.

Specifically, the indentation 1205 on body can be broken under the first gas pressure in the enclosure, Break under the effect of the second air pressure the most in the enclosure of the indentation on flip piece, and the second air pressure is more than the One air pressure.The intensity of the i.e. first indentation is less than the second indentation, can be broken by the first less air pressure. Only just continue to break the second indentation when air pressure continues and raises and pressure release.

In the present embodiment, in order to ensure that flip piece 1202 is able to receive that the air pressure force of inside, turn over The outer peripheral edge turning part 1202 is tightly connected with electric-conductor 1201, to prevent gas from letting out from flip piece outer peripheral edge Pressure.Specifically, cover plate 1102 offers and the passage of enclosure gas communication, and cover plate On be sealedly connected with the first ceramic ring 1207 around passage, body 1299 be sealedly connected on this On one ceramic ring 1207, do not leak on body 1299 so that air pressure inside can act on. In addition to stably assemble flip piece 1202, the outer peripheral edge of flip piece 1202 is sealedly connected on the second pottery On ring 1296, and this second ceramic ring is sealedly connected on electric-conductor 1201.Therefore by the second pottery The insulation characterisitic of porcelain ring, the outer peripheral edge that can either stably support this flip piece 1202 can also make to lead Insulated, so at flip piece 1202 by the second ceramic ring 1296 in the outer peripheral edge of electricity part and flip piece 1202 Electric current can be remained open after being broken by indentation 1205 with electric-conductor 1201 connect, thus play electric current The effect interrupted.

Specifically, as a kind of embodiment, as shown in figure 17, the body 1299 of electric-conductor 1201 On be formed with the annular boss 1297 around indentation 1205, so, by the knot of this annular boss 1297 Structure, its inner side radially may be used for forming the features such as indentation 1205, and so that this is ring-type convex The back side recess of platform 1297 seals and accommodates the first ceramic ring 1207, it addition, annular boss 1297 Outside may be used for seal support have the second ceramic ring 1296.So, this utility model the second embodiment party By the unique texture of the electric-conductor described in Figure 16 in formula, it is possible to make current interrupt device 1200 more Install easily.

It addition, the first ceramic ring 1207 is sealedly connected on cover plate 1102 by transition rings 1209, as Shown in Figure 17, this transition rings 1209 has and embeds the connection main body of passage inwall and for connecting the The flange ring of one ceramic ring 1207.This flange ring is radially projecting from connection main body and fits with cover plate. Thus ensure the stable installation of current interrupt device 200, directly and cover without the first ceramic ring 1207 Plate 1102 connects.

In the present embodiment, connect for convenience, it is preferable that electrode terminal 1101 includes through lid Plate 1102 pole 1104 electrically connected with battery core, the connecting portion 1298 of electric-conductor 1201 is formed slotting Groove 1295, in pole 1104 penetrates this slot 1295 and be welded to each other, thus realizes stablizing of the two and connects Connect.It addition, current interrupt device 1200 include cover on flip piece 1202 and with this flip piece 1202 The connector 1210 of electrical connection, this connector 1210 has the covering part 1294 covering flip piece 1202 With the lead division 1293 extended from this covering part 1294.Wherein this connector 1210 can be formed as with The structure that L-type connector 214 in first embodiment is identical, i.e. covering part and lead division is formed as L Type inflection structure.Consequently facilitating electric current is drawn out to adjacent electrode terminals from current interrupt device 1200 Or outside module.

Wherein in the battery modules that at least one cell is above-mentioned cell 1100, in electric current Disconnected device extends radially out described cover plate, thus increases lifting surface area and increase pull-off force.At adjacent list Between body battery, current interrupt device and adjacent electrode terminal on cover plate 1102 bearing of trend mutually Stagger, thus avoid interference the structure on adjacent cover plate.It is additionally identical with the first embodiment, It is provided with the quantity of cell 1100 of current interrupt device 1200 less than three.

Above describe the electrokinetic cell that this utility model the second embodiment provides, wherein essentially describe The feature different from the first embodiment, in the case of reconcilable, the feature of two embodiments can phase Replace mutually, combine, this is not done by this this utility model too much repeating.

The cell 2100 that this utility model the 3rd embodiment provides is introduced below in conjunction with Figure 18, should The electrode terminal 2101 that electrically connects with this battery core including shell, the battery core that is contained in this shell and The cover plate 2102 of package casing, electrode terminal 2101 is arranged on cover plate 2102, wherein cell bag Include the first electrode leading-out piece 2298 electrically connected with battery core, and electrically connected with electrode terminal 2101 Two electrode leading-out pieces 2297, cover plate 2102 is additionally provided with the explosion-proof valve that the internal gas with shell connects 2200, this explosion-proof valve 2200 has connection the first electrode leading-out piece 2298 and the second electrode leading-out piece 2297 Flip piece 2202, i.e. two electrode leading-out pieces are connected by this flip piece 2202.

Wherein, the first electrode leading-out piece 2298 and/or the second electrode leading-out piece 2297 are formed with first Indentation 2205, this first indentation 2205 can disconnect interrupting the first electricity under gas pressure in the enclosure Acting on of electric current on pole leading-out piece 2298 and/or the second electrode leading-out piece 2297, i.e. this first indentation Disconnect thus the transmission of interruptive current, therefore two electrode leading-out pieces in making the electrode leading-out piece arranging it In at least one be provided with the disconnection that the first indentation can realize the electrical connection of battery core and electrode terminal, continue And cell is disconnected with the transmission of extraneous electric current.It addition, be additionally provided with on flip piece 2202 Two indentations 2299, this second indentation 2299 can disconnect under gas pressure in the enclosure so that shell Interior gas outwards releases via flip piece 2202, and the effect of the i.e. second indentation is ventilation, disconnects Rear so that internal gas leaks, thus avoid inside battery air pressure to continue rising and cause blast, to rise To explosion-proof.

Specifically, the first indentation can be broken under the first gas pressure in the enclosure, and the second indentation can Break under the effect of the second air pressure in the enclosure, and the second air pressure is more than the first air pressure.I.e. first quarter The intensity of trace 2205 is less than the indentation of the second indentation 2205, can be broken by the first less air pressure. Only just continue to break the second indentation 2205 when air pressure continues and raises and pressure release.

As shown in figure 18, in the present embodiment, two electrode leading-out pieces can be lengthy motion picture structure, this Sample is in order to turn-off current, and the first indentation 225 prolongs along the width of this long chip architecture from a lateral edges Reach opposite side edge, so so that long chip architecture can be more in time along the first indentation fracture.Its Middle flip piece 2202 could be formed with ring-type outer wall, and two electrode leading-out pieces can be fixedly connected on ring-type On lateral wall, to realize electric current transmission.Specifically, in this utility model, this flip piece ring-type outside Wall can be formed by the boss in such as boss Welding Structure, and flip piece is also formed with conical ring knot in addition Structure, this conical ring is from the outward-dipping outer peripheral edge extending to flip piece of boss, to be formed in bowl-shape flip piece. It addition, the second indentation can be formed as circulus around the circumference of flip piece, with thorough under gas pressure The end, disconnects, and increases air venting efficiency.Specifically the second indentation may be formed in conical ring structure.In order to make Obtain flip piece and effectively can be broken the first indentation and the second indentation by gas pressure, flip piece 2202 Outer peripheral edge and the relatively-stationary insulated enclosure of described cover plate, so on the one hand can avoid gas not drawing Just leak in the case of disconnected first indentation and the second indentation and make two indentations ineffective.The opposing party Face, can avoid cover plate charged by insulation connection.

In the present embodiment, electrode terminal 2101 includes the pole through cover plate, and this pole is by the Two ceramic rings insulate with the outside of cover plate and are connected, in order to set up current loop with the external world.The most adjacent list It is to be realized by being connected with each other of electrode terminal between body battery.Wherein can be avoided by ceramic ring Cover plate is charged.It addition, be sealedly connected with the first ceramic ring between the outer peripheral edge of flip piece 2202 and cover plate 2207, play equally and seal and the effect of insulation.

It addition, for the ease of connecting flip piece 2202, cover plate 2102 is fixedly connected with First Transition sheet 2295, the periphery of flip piece 2202 is fixedly connected with the second transition plate 2296, First Transition sheet and second Transition plate can be aluminium flake.First Transition sheet 2295 and the second transition plate 2296 and the first ceramic ring 2207 Soldering is connected coaxially.So, when assembling, first two transition plates can be passed through soldering side Formula is welded on ceramic ring, is then being welded with other structures by two stators, so can keep away Exempt from the structure such as ceramic ring and cover plate carry out between soldering and the high temperature etc. that produces, thus easy to assembly and pass through First ceramic ring 2207 realizes sealing, consolidating and the sealing of insulation, and is possible to prevent cover plate 2102 to carry Electricity.

Specifically First Transition sheet 2295 and the second transition plate 2296 can be respectively circulus to adapt to Two annular end face of ceramic ring.Furthermore it is preferred that cover plate 2102 is formed with annular boss, first Transition plate 2205 is supported on this annular boss, and ceramic ring is close to the inwall of this annular boss towards second Transition plate 2296 extends, thus by ceramic ring is stably connected in cover plate 2102.

It addition, explosion-proof valve also includes the protecting film 2099 that can be broken through by air pressure, this protecting film seals and covers Above flip piece 2202, in particular it is connected to away from the First Transition sheet 2295 of flip piece.So Protecting film 2099 can play the protective action within explosion-proof valve 2200 under normal circumstances, and at needs Time explosion-proof, can be broken through by certain air pressure, the such as second air pressure, thus avoid affecting the anti-of explosion-proof valve Quick-fried effect.

It addition, this utility model is pulled off to realize the priority of two indentations, the remnants of the first indentation The ratio of the residual thickness of thickness and the second indentation is 1:3-1:1.2.It is further 1:2-1:1.3.

Above describe the cell that this utility model the 3rd embodiment provides.Below in conjunction with Figure 22 Introduce the 4th embodiment that this utility model provides.

4th embodiment of the present utility model provides a kind of cell 3100 and uses this monomer electricity The battery modules in pond.This cell 3100 includes shell, the battery core being contained in this shell, encapsulation The cover plate 3102 of shell and the electrode terminal 3101 being arranged on cover plate 3102, wherein, monomer electricity Pond 3100 also include the interior leading-out piece 3299 electrically connected with battery core and be connected to interior leading-out piece 3299 and Current interrupt device 3200 between electrode terminal 3101, wherein, is different from the first embodiment peace Being contained in the mode of outer end on pole, the current interrupt device 3200 in present embodiment is positioned at cover plate 3102 Inner side and connect with the internal gas of shell under gas pressure, to disconnect the electric current flowed through, its In, electrode terminal 3101 connects and has the adaptor 3298 extended radially outward from outer peripheral edge, with logical Cross this adaptor 3298 and connect the outer peripheral edge of current interrupt device.

So, the adaptor 3298 extended radially outwards due to the outer peripheral edge having from electrode terminal so that The current interrupt device being connected with adaptor 3298 radial outside, compares and is directly connected with electrode terminal Mode, it is bigger that its area can design, thus increase air pressure inside and electrode interrupts the force surface of device Long-pending, thus electrode can be promoted in the case of air pressure is constant and interrupt the stress of device, and in motor current The sensitivity of disconnected device 3200, completes the cut-out of electric current in time.The most especially of the present utility model Battery applications, in the big field of batteries such as electrokinetic cell, owing to generally requiring the big electric current of transmission, therefore increases Adaptor and high current interrupt the size of device the transmission utilizing big electric current.

In the present embodiment, adaptor 3298 is formed as circulus, the inner peripheral of this circulus Being connected with the outer peripheral edge of electrode terminal, outer peripheral edge is connected with the outer peripheral edge of current interrupt device, thus plays Increasing the effect of current interrupt device area, in other embodiments, adaptor 3298 can also be Radially extend and the structure of multiple connection posts of circumferentially spaced setting, be capable of equally increasing electric current Interrupt the effect of the area of device.

In the present embodiment, in order to increase the firm of adaptor and electrode terminal and current interrupt device Degree, it is ensured that electric current transmission is stable.Preferably, in the inner peripheral of described circulus and described electrode terminal The outer peripheral edge seam of end coordinates, and specifically can be formed with seam on the inner outer peripheral edge of electrode terminal, And the inner peripheral of adaptor embeds in this seam and is connected, thus increase connection area and ensureing stable connection While can increase electric current transmission efficiency.Wherein the interior outer end of electrode terminal is relative along its axial direction Define in shell, i.e. close to enclosure for the inner.

It addition, in the present embodiment, the outer peripheral edge of circulus is projecting inward towards described shell, even if Obtain circulus itself and be formed as the structure of ring cap, and the inner side of current interrupt device and this outer peripheral edge is only Mouth coordinates, thus not only guarantee stable connection increases electric current transmission efficiency but also can spaced apart current interruptions Device and electrode terminal, so that provide space for current interrupt device disconnection under gas pressure.

In the present embodiment, interior leading-out piece 3299 includes the connection sheet (not shown) being connected with battery core, This connection sheet extends towards cover plate direction from battery core.Interior leading-out piece also includes for accommodating installation electric current Interrupting the support slot of device, and the connecting plate extended from this support slot towards rightabout, connecting plate divides Not being connected with cover plate insulation, thus avoid cover plate charged, specifically, connecting plate can be formed with link slot Include two sidewalls and a diapire for overall laminated structure, i.e. link slot, two sidewalls respectively with both sides Connecting plate be connected.It addition, so that current interrupt device and enclosure gas communication, Ke Yishe It is formed and the air passing hole of enclosure gas communication on the diapire of meter support slot.

In the present embodiment, in order to avoid cover plate is charged, interior leading-out piece 3299 is by ceramic member 3296 Insulation is connected to the inner side of cover plate 3102.Specifically, ceramic member 3296 can be formed as potsherd, and Be weldingly connected with interior leading-out piece 3299 and cover plate by transition plate 3294 respectively, i.e. transition plate 3294 is Two panels, this transition plate can be aluminium flake, lays respectively at the upper and lower surface of ceramic member 3296, ceramic member 3296 It is welded to connect with cover plate 3102 by being positioned at the transition plate 3294 of ceramic member 3296 upper surface, makes pottery simultaneously Porcelain piece 3296 is welded with leading-out piece 3299 also by the transition plate 3294 being positioned at ceramic member 3296 lower surface Connect in succession, so that welding between ceramic member 3296 with cover plate 3102 and interior leading-out piece 3299 Connect and be more easy to realize, and Welding Structure is stable.Wherein ceramic member 3296 be positioned at its upper and lower surface Can be connected by Ceramic brazing between transition plate 3294, be positioned at the transition plate of ceramic member 3296 upper surface Can be connected by laser welding between 3294 with cover plate 3102, be positioned at the mistake of ceramic member 3296 lower surface Cross and can be connected by laser welding between sheet 3294 with interior leading-out piece 3299.

In the present embodiment, current interrupt device 3200 have electric-conductor 3201 and with this electric-conductor 3201 are connected with the flip piece 3202 being electrically connected to each other, and flip piece 3202 and electric-conductor 3201 energy Enough disconnection under gas pressure electrically connects, and wherein electric-conductor 3201 is connected on interior leading-out piece 3299 and shape The gas port 3203 of Cheng Youyu enclosure gas communication, specifically, electric-conductor 3201 embeds and is connected to In the support slot of interior leading-out piece, the air passing hole formed in such support slot can be with gas port 3203 gas Connection, so that flip piece 3202 can experience the internal gas pressure of shell, thus in inside Flip piece 3202 and the electrical connection of electric-conductor 3201 is disconnected under gas pressure.Wherein, flip piece 3202 Outer peripheral edge be connected to set up electric current access path with the outer peripheral edge of adaptor 3298.

Wherein, in the present embodiment, as a kind of mode disconnecting electrical connection, on electric-conductor 3201 Being formed with indentation, this indentation is around the junction point setting for connecting flip piece 3202.So, including Under the effect of portion's air pressure, this indentation can be pulled off thus disconnect the electrical connection with flip piece.Implement at other In mode, indentation can also be formed on flip piece or use the mode breaking the two junction point.In order to Realizing the air pressure pressure to flip piece 3202, insulating part 3295 is passed through in the outer peripheral edge of flip piece 3202 Support be connected on electric-conductor 3201 and/or interior leading-out piece 3299, thus by insulating part 3295 realize right The assembling of flip piece 3202, so ensure that outer peripheral edge and interior leading-out piece 3299 and the conduction of flip piece Part insulate, thus avoid not disconnecting with electric-conductor under flip piece is at gas pressure electrically connect after also can be Outer peripheral edge electrically connects with electric-conductor or interior leading-out piece.

Specifically, insulating part can be the ring-type insulating part such as ceramic ring, sealing ring, and wherein insulating part has Three kinds of connected modes, first is supported on electric-conductor 3201 for sealing, is in particular supported on electric-conductor 3201 around being pulled off the region in region, and second for being supported on interior leading-out piece 3299, is in particular Supportting at interior leading-out piece 3299 around on the region of electric-conductor 3201, the 3rd for being supported on interior leading-out piece simultaneously 3299 and electric-conductor 3201 on, the most as shown in figure 23, insulating part is supported on interior leading-out piece 3299 and leads On the join domain of electricity part 3201.

Wherein, stable in order to ensure that the electric current of electric-conductor and flip piece transmits, it is especially adapted for use in big electric current Electrokinetic cell, similar with the first embodiment, in the case of electric-conductor arranges indentation 3205, as Shown in Figure 23, flip piece 3202 and electric-conductor 3201 by by indentation 3205 around boss weld knot Structure is connected, and this boss Welding Structure includes boss 3203, accommodates the connecting hole 3204 of this boss 3203 And the annular solder joint 3217 between this boss 3203 and connecting hole 3204, thus ensure big electric current Effectively pass through.The most specifically, as shown in figure 23, with shown in Fig. 6 in the first embodiment not With, boss 3203 is formed on flip piece 3202, and connecting hole 3204 is formed on electric-conductor 3201. In addition it is also possible to identical with the first embodiment, boss is formed on electric-conductor 3201, connecting hole 3204 Formed on flip piece.

It addition, as shown in figure 22, as a kind of embodiment, electric-conductor 3201 can be formed as hat shape knot Structure, this cap-like structure includes the cap body that is connected with flip piece and the brim of a hat around this cap body, wherein on the brim of a hat It is formed with above-mentioned gas port and is connected with interior leading-out piece, and cap body is protruded towards flip piece, flip piece shape Become to be connected between laminated structure, and the outer peripheral edge of this laminated structure and the brim of a hat and have above-mentioned insulating part 3295.So that the compact conformation of the current interrupt device of this utility model offer, assembling is stable.

In the present embodiment, in order to set up current loop with the external world, it is preferable that electrode terminal 3101 Including the pole 3104 through cover plate, this pole is connected with cover plate insulation by ceramic ring 3293, thus Avoiding cover plate charged, additionally adaptor 3298 is connected on the inner of this pole with by exposing outside cover plate Part set up current loop with the external world.Specifically, ceramic ring 3293 is sealedly connected on the appearance of cover plate On face, and it is connected with pole 3104 sealing, to ensure the sealing effectiveness within cover plate.Wherein, pole On axially through being formed with pore 3292.So, the electricity interrupted at current interrupt device 3200 pressurized Will not be affected by closed chamber air pressure in cover plate during connection but can be set up with ambient atmosphere Pressure reduction so that flip piece 3202 under the effect of inside and outside differential pressure action and break indentation 3205.

Above describe the cell that this utility model the 4th embodiment provides.Below in conjunction with Figure 24 Introduce the 5th embodiment that this utility model provides.

5th embodiment of the present utility model provides a kind of cell 4100 and uses this monomer electricity The battery modules in pond, wherein this cell 4100 include shell, accommodate battery core in the enclosure and The electrode terminal 4101 of this battery core electrical connection and the cover plate 4102 of package casing, electrode terminal 4101 Being arranged on cover plate 4102, wherein, electrode terminal includes drawing through cover plate 4102 and in passing through with battery core Going out the pole 4104 of part 4196 electrical connection, cell also includes being arranged in the electric current on pole 4104 Disconnected device 4200, this current interrupt device 4200 have fixing relative to cover plate 4102 and with in shell The flip piece 4202 of portion's gas communication, and the outer face of flip piece 4202 and pole 4104 is by being connected Point is connected, and this junction point can disconnect under gas pressure.So, current interruptions dress in present embodiment The operation principle put is directly to be pulled open by the junction point of flip piece 4202 and pole 4104 by air pressure, Thus interrupt the electrical connection of the two.

In order to promote sensitivity, it is preferable that flip piece 4202 is connected with pole by single solder joint 4199. The solder joint 4199 such as completed by spot welding, additionally can be real by other welding means such as Laser Welding Existing.Therefore, present embodiment reasonably can be implemented by the fusion penetration of butt welding point, molten width, from And realize the control breaking pressure.

In the present embodiment, it is similar to the first embodiment, pole 4104 is formed and shell The gas port 4103 of internal connection, such that it is able to be directed to current interrupt device by air pressure inside easily On.It addition, in order to further motor current interrupts the reliability of device, it is preferable that flip piece 4202 On be formed with indentation 4205, this indentation 4205 around junction point arrange.So, connection is broken except above-mentioned Outside Dian, it is also possible to realize the interruption of electric current by breaking indentation 4205.In the present embodiment, even The air pressure of breaking of contact and indentation has a successively property, and specifically, junction point can the first gas in the enclosure Breaking under pressure effect, indentation 4205 can be broken under the effect of the second air pressure, and the second air pressure is more than the One air pressure.So that indentation 4205 can be as the back-up measures of junction point, it is ensured that the safety of battery. It is highly preferred that be coated with block 4210 on flip piece 4202, this block 4210 is formed with pore 4197. So, after indentation 4205 is pulled off, the gas of enclosure can by by flip piece again from pore In 4197 discharge, then realize the pressure release of inside battery, prevent inside battery from exploding, this principle and The explosion-proof valve of the 3rd embodiment is similar to.

In the present embodiment, it is connected between pole 4104 with cover plate 4102 and has the first ceramic ring 4207, Thus realize the stable installation of pole by ceramic structure and avoid cover plate 4102 charged simultaneously.It addition, Seal between pole 4104 and the outer peripheral edge of flip piece and be connected to the second ceramic ring 4198 repeatedly, such that it is able to The sealing of the outer peripheral edge of flip piece is realized, it is ensured that interior gas can be effectively to flip piece by this ceramic structure Pressure, and ensure to insulate between pole and the outer peripheral edge of flip piece, it is to avoid break junction point or quarter. simultaneously Flip piece after trace remains able to conduction.

Specifically as a kind of embodiment, pole 4104 has and is formed with the annular boss around junction point 4297, thus by the construction features of this annular boss, the back side recess of this annular boss 4297 is close Envelope accommodates the first ceramic ring 4207, and this first ceramic ring 4207 is sealedly connected on cover plate 4102, ring The radial outside of shape boss 4297 seals support the second ceramic ring 4198, this second ceramic ring 4198 Seal the outer peripheral edge supporting flip piece 4202.The structure making overall current interruption device is compacter, And assemble stable.For the ease of assembling, the first ceramic ring 4207 is tightly connected by transition rings 4209 On cover plate 4102.Specifically can carry out Ceramic brazing by transition rings and the first ceramic ring 4207 and It is tightly connected.

Above describe this utility model first to the 5th embodiment, below, in conjunction with Figure 20 and Figure 21 Introduce cell and the embodiment of battery modules that a kind of this utility model provides, wherein with said structure The effect of embodiment same characteristic features is not done at this and is too much repeated.

In the present embodiment, it is provided that a kind of cell, this cell 100 includes shell 109, holds Electrode terminal 101 that the battery core 108 being contained in shell 109 electrically connects with this battery core 108 and encapsulation The cover plate 102 of shell, electrode terminal 101 is arranged on cover plate 102, and electrode terminal includes through cover plate 102 and the pole 104 that electrically connects with battery core, cell also includes the electric current being arranged on pole 104 Interrupting device 200, this current interrupt device 200 connects with the internal gas of shell, wherein current interruptions Device 200 has electric-conductor 201 and is connected the flip piece 202 being electrically connected to each other with this electric-conductor 201, And flip piece 202 can disconnect under gas pressure with electric-conductor 201 and electrically connecting, wherein electric-conductor 201 Being connected to be electrically connected to each other on pole 104, flip piece 202 welds knot with electric-conductor 201 by boss Structure be connected, this boss Welding Structure include boss 203, the connecting hole 204 accommodating this boss 203 and Annular solder joint 217 between this boss 203 and connecting hole 204, flip piece 202 is formed as first Laminated structure, this first laminated structure is formed connecting hole 204, and electric-conductor 201 is formed as second Shape structure, this second laminated structure is formed boss 203, electric-conductor 203 is formed indentation 205, This indentation 205 is arranged around boss 203, and electric-conductor 201 is connected to the outer end end face of pole 104 On, the outer peripheral edge of flip piece 202 is fixed relative to cover plate 102, and pole 104 is fixing with cover plate 102 even Connect, and on pole 104, be formed with connection enclosure and the inducing QI duct of current interrupt device 200, Pole 104 is arranged on the ceramic ring 207 being sealedly attached on cover plate 102, the outer end of ceramic ring 207 Being sealedly connected with conducting ring 216 on face, the outer peripheral edge of flip piece 202 is sealedly connected on this conducting ring 216 On, pole 104 is insulated by ceramic ring 207 with conducting ring 216.Thus stably accomplish the biography of electric current Pass and interrupt.

In the present embodiment, the outer end end face of pole 104 is formed with receiving hole 218, electric-conductor 201 Outer peripheral edge be fixed on the inwall of this receiving hole.

In the present embodiment, indentation 205 is oval, and boss 203 is circular, and indentation 205 Stagger along the long axis direction of this ellipse in the center of circle of the center of circle and boss 203, and the major axis of ellipse and electricity The axis of extreme son is obliquely installed.

In the present embodiment, and the outer end periphery of pole 104 has radially boss 105, ceramic ring 207 Inner edge have to support and connect the radial direction of this radial direction boss 105 and support 208, radially boss 105 be that edge is all To spaced multiple, radially supporting 208 is the multiple of circumferentially spaced setting, and the plurality of radial direction Boss and multiple radial direction support one_to_one corresponding.

In the present embodiment, the outer face of ceramic ring 207 is formed as the hierarchic structure with inner ring and outer ring, Pole 104 embeds and is connected on inner ring, outer ring is sealedly connected with and the conducting ring 216 of pole insulation, The outer peripheral edge of flip piece 202 is fixedly connected on this conducting ring 216, close on the inner face of ceramic ring 207 Envelope connection has transition rings 209, and this transition rings 209 is sealedly connected on cover plate 102 so that ceramic ring 207 And cover plate 102 interval is arranged.

In the present embodiment, ceramic ring 207 respectively with conducting ring 216, pole 104 and transition rings 209 Between be tightly connected by Ceramic brazing.

In the present embodiment, transition rings 209 has inner ring and the outer ring forming Z-type structure, and cover plate is formed Having the through hole passed for pole 104, the end face of this through hole is ledge structure, and the inner ring of transition rings embeds and props up Support is in ledge structure.

In the present embodiment, the outer face of conducting ring 216 is formed with L-type seam, outside flip piece 202 Periphery embeds and is supported in this L-type seam, and this outer peripheral edge sets the block of this flip piece 202 by cover 210 are sealedly connected on this L-type seam.

Wherein, in order to complete the assembling of this cell, as shown in figs 20 and 21, battery core 108 connects Being connected to lower spacer ring 107, connecting below cover plate 102 has upper spacer ring 106, and upper and lower spacer ring can use insulation material Matter is made.Wherein, cell 100 also includes interior being connected sheet 110 with battery core is connected, this interior connection Sheet 110 extends between spacer ring 107 and lower spacer ring 106, in order to transmit electric current, pole 104 Lower surface is formed with end difference, and this connects end difference and is connected sheet 110 through cover plate 102 and upper spacer ring 106 with interior End clamping.Thus complete electric current from battery core 108 to the transmission of pole 104 and make cover plate 102 Insulated with shell 109, it is to avoid charged.

In the battery modules that the present embodiment provides, this battery modules includes multiple cell, at least one Individual cell is above-mentioned cell, and current interrupt device 200 extends radially out cover plate 102, Between adjacent cell 100, current interrupt device 200 on the bearing of trend of cover plate with adjacent Electrode terminal mutually stagger.It addition, between adjacent cell 100, current interrupt device 200 And being connected by L-type connector 214 between adjacent electrode terminal, this L-type connector 214 has and covers Cap 211 and lead division 212, covering part 211 covers and is connected in current interrupt device 200, draws Portion 212 extends to adjacent electrode terminal.

Additionally, the present embodiment also provides for a kind of electrokinetic cell, it is characterised in that this electrokinetic cell includes Body and the battery modules being contained in this inclusion, battery modules is above-mentioned battery modules, and in inclusion Being provided with the gas-detecting device for detecting fuel gas, this gas-detecting device adjacent currents interrupts dress Install, provide fuel gas signal for for charge and discharge protecting system.Furthermore, it is contemplated that cost and Effect, has a current interrupt device in this battery modules.

Above describing the cell with current interrupt device or explosion-proof valve, current interruptions therein fills Put or explosion-proof valve is all the safety measure realized by the frame for movement of itself.This utility model will be in detail below Thin introduction includes the electrokinetic cell of charge and discharge protecting system, to promote safety by automatically controlled mode.

As shown in figure 19, this utility model provides a kind of electrokinetic cell, and this electrokinetic cell can be above-mentioned There is current interrupt device, explosion-proof valve or other kinds of electrokinetic cell.Wherein, electrokinetic cell includes Body and the multiple cells 100 being contained in this inclusion, the most the plurality of cell 100 such as with Series system or parallel way composition battery modules, be provided with for detecting power current in wherein said inclusion The gas-detecting device 300 of the fuel gas in pond, such as gas sensor, thus dynamic for whether cutting off The charge-discharge circuit of power battery provides signal.

Wherein, this electrokinetic cell includes charge and discharge protecting system is except including the above-mentioned electrokinetic cell that is positioned at Outside gas-detecting device 300, also include controlling device 400 and current switching device.

Wherein, fuel gas signal is fed back to control device 400, this control by gas-detecting device 300 Device 400 cuts off the discharge and recharge electricity of electrokinetic cell for controlling current channel device according to fuel gas signal Road.That is, in this utility model safety be by whether there is fuel gas and enter in detection inclusion Automatically controlling of row.Wherein, it is that inside can produce fuel gas in precarious positions such as battery overcharge, This portion gas can be leaked in inclusion more or less by various modes, now gas-detecting device, The most airtight sensor is able to detect that fuel gas, and feeds back to control device, controls device according to being The no fuel gas detected or the amount of fuel gas detected decide whether to cut off electrokinetic cell Charge-discharge circuit.When fuel gas being detected, or when the amount of fuel gas exceedes predetermined threshold value, The charge-discharge circuit of electrokinetic cell can be cut off, to ensure the peace of electrokinetic cell with control circuit lane device Entirely.

In order to reduce potential safety hazard further.Electrokinetic cell also include by control device 400 control report Alarm device 500, so can point out related personnel to remove by alarm devices such as voice, flashing light, sirens From scene, and reduce potential safety hazard.

As shown in figure 19, control device 400 include electrokinetic cell host computer main control chip 401 and with The control module 402 that this main control chip signal connects, control module 402 is with connecting and disconnecting of the circuit device signal even Connect.Wherein current switching device can be the relay 403 being positioned in charge-discharge circuit, with by controlling mould Block 402 controls to cut off charge-discharge circuit, and additionally alarm device 500 can directly and PC control core Sheet 401 signal connects, thus receives alarm command and report to the police.

In concrete work process, the collection signal for gas sensor can do digital-to-analogue conversion, adopt Sample preservations etc. process, it can in addition contain carry out the breakdown judge of system, when system does not break down, Further collection signal can be carried out the process of gas concentration thus judge whether to there occurs fuel gas Leakage, when occur fuel gas leakage concentration exceed threshold value time, host computer main control chip 401 enter Row cuts off electric current and the operation of warning.

Wherein, in this embodiment, gas-detecting device is arranged on outside cell, fuel gas Can release, as long as in addition after being pulled off by the indentation in above-mentioned current interrupt device or explosion-proof valve Gas can be released, can also be by well known to a person skilled in the art that various conventional explosion-proof valve releases.That is, In battery modules, at least one cell is provided with under cell internal gas pressure effect Cut off the current interrupt device of charge-discharge circuit, the most aforesaid each current interrupt device.And current interruptions Device can make the gas in shell to leak in the switched off state.So that the gas in inclusion Detection device is able to detect that the fuel gas leaked, and now represents that battery has occurred in that danger such as overcharging Situation.Additionally, for the sensitivity promoting system, it is preferable that gas-detecting device adjacent currents is interrupted Device is arranged, thus corresponding signal can be detected after fuel gas discharges in time and feed back to control dress Put.It addition, in addition to current interrupt device, in some embodiments, at least one cell sets It is equipped with the explosion-proof valve that can release gas under described cell internal gas pressure effect, the such as the 3rd Explosion-proof valve in embodiment, now, gas-detecting device can be arranged by neighbouring described explosion-proof valve.

In the present embodiment, in order to realize above-mentioned gas leak, the electric current in the respective embodiments described above Interrupt device and there is covering, this covering is formed with pore 213 so that gas in described shell Can leak after flip piece and electric-conductor disconnect electrical connection.It addition, the pore on covering can also make Obtain current interrupt device and directly set up pressure reduction with air, thus realize the action of flip piece.The most herein Covering can be the block 210 in the first embodiment, it is also possible to be the connection in the second embodiment Part 1210, or be the protecting film 2099 etc. in the 3rd embodiment.It is thus possible to carve corresponding After trace is pulled off so that gas can be released by the pore 213 in the such as first embodiment, thus The fuel gas leaking in bag is detected in time by gas-detecting device.

Five kinds of embodiments of the present utility model are described in detail above in association with accompanying drawing, but, this practicality is new Type is not limited to the detail in above-mentioned embodiment, in technology concept of the present utility model, The technical solution of the utility model can be carried out multiple simple variant, these simple variant belong to this reality With novel protection domain.

It is further to note that each the concrete technology described in above-mentioned detailed description of the invention is special Levy, in the case of reconcilable, can be combined by any suitable means, in order to avoid need not The repetition wanted, various possible compound modes are illustrated by this utility model the most separately.

Additionally, combination in any can also be carried out between various different embodiment of the present utility model, only Wanting it without prejudice to thought of the present utility model, it should be considered as content disclosed in the utility model equally.

Finally, the Developed Background introducing the design of this utility model above-mentioned utility model is described:

Along with increasingly sharpening of environmental pollution, the exploitation of new-energy automobile has become national new strategical planning, And the mixed dynamic or pure electric automobile in new-energy automobile occupies the main flow in current automobile market, electronic Automotive field, course continuation mileage is currently the principal element of restriction development, and this depends on that the energy of battery core is close Degree, the main core material of existing market is ternary and LiFePO4 Liang Ge camp, the former energy density Height, but poor safety performance, especially overcharge and can cause blast on fire, and this requires tight for security performance The automobile industry of lattice is a biggest challenge.

But the increase of battery capacity can bring higher course continuation mileage, this allows for everybody to ternary material Security performance need to take certain improvement project to ensure its safety, but due to material performance very Difficult further improved, can only go to try every possible means from structure top.

As stated in the Background Art, the design of existing battery bag is substantially by BMS (battery management system) Battery core in module is carried out voltage and current temperature management and control, but actually used during, the one of battery core The reliability of cause property and management software still has the most accidental risk.Specifically, with reference to people for moving The use habit of dynamic equipment, for electric automobile, car body is plugged in always by popular typically also can existence The situation of charging, although have BMS software to be controlled, single this battery charges for a long time, if software Detection was lost efficacy or other arise that the risk that in inclusion loop, battery core overcharges extremely.Therefore, this practicality is new The utility model people of type expects can being a kind of mechanical design protection of battery design, to avoid software to lose The battery security risk caused after effect.

For mechanical protective measure, utility model people of the present utility model creatively finds, battery Current interruptions opportunity under the precarious position such as overcharging is regular governed in fact, i.e. can utilize The principle that when precarious position occurs, air pressure inside rises such as overcharge, design the electricity that can interrupt electrode terminal The current interrupt device of stream or explosion-proof valve such that it is able to control input or the output of electrode terminal, to ensure Safety.

Further, since the electrokinetic cell capacity used on automobile is generally tens times of 3C battery class, and And by dozens or even hundreds of times of electric current baby battery class especially, so also requiring that this sheet have to lead to Cross the biggest electric current, and owing to using environment, its weatherability and sealing requirements be more strict, These problems just define technical side in each embodiment that this utility model is above-mentioned after collecting Case.And by verification experimental verification, the current interrupt device or explosion-proof in each embodiment of this utility model Valve all can disconnect the electric current of battery in time, thus effectively promotes safety.

Claims (14)

1. a current interrupt device, it is characterized in that, this current interrupt device has electric-conductor (201) and is connected the flip piece (202) being electrically connected to each other with this electric-conductor (201), and described flip piece (202) can disconnect under gas pressure with described electric-conductor (201) and electrically connecting, indentation (205) it is formed with on described electric-conductor (201), this indentation (205) is arranged around the junction point being used for connecting described flip piece (202), and offers on described indentation (205) and weaken hole (206).

Current interrupt device the most according to claim 1, it is characterised in that described in weaken hole (206) be multiple and along described indentation (205) interval arrange.

Current interrupt device the most according to claim 1, it is characterized in that, described flip piece (202) is connected by boss Welding Structure with described electric-conductor (201), and this boss Welding Structure includes boss (203), the connecting hole (204) accommodating this boss (203) and the annular solder joint (217) being positioned between this boss (203) and connecting hole (204).

Current interrupt device the most according to claim 3, it is characterized in that, described flip piece (202) is formed as the first laminated structure, described connecting hole (204) it is formed with in this first laminated structure, described electric-conductor (201) is formed as the second laminated structure, and this second laminated structure is formed described boss (203).

Current interrupt device the most according to claim 1, it is characterised in that described indentation (205) is oval.

6. according to the current interrupt device described in claim 3 or 4, it is characterized in that, described boss (203) is circular, described indentation (205) is oval, and staggers along the long axis direction of described ellipse in the center of circle of the center of circle of described indentation (205) and described boss (203).

7. a cell, including shell, accommodate the electrode terminal (101) that battery core in the enclosure electrically connects and the cover plate (102) encapsulating described shell with this battery core, described electrode terminal (101) is arranged on described cover plate (102), it is characterized in that, described cell also includes according to the current interrupt device described in any one in claim 1-6, this current interrupt device (200) electrically connects with described electrode terminal (101), and described current interrupt device (200) connects with the internal gas of described shell.

Cell the most according to claim 7, it is characterized in that, described electrode terminal (101) includes through described cover plate (102) the pole (104) that electrically connects with described battery core, described electric-conductor (201) is connected to be electrically connected to each other on the outer end of described pole (104), and the outer peripheral edge of described flip piece (202) is fixed relative to described cover plate (102).

Cell the most according to claim 8, it is characterized in that, described flip piece (202) is coaxially disposed with described pole (104), and described electric-conductor (201) is obliquely installed relative to the axis of described pole (104).

Cell the most according to claim 8, it is characterised in that be formed with receiving hole (218) on the outer end end face of described pole (104), the outer peripheral edge of described electric-conductor (201) is fixed on the inwall of this receiving hole.

11. cells according to claim 8, it is characterized in that, described pole (104) is fixing with described cover plate (102) to be connected, and described pole (104) is formed the described enclosure of connection and the inducing QI duct of described current interrupt device (200).

12. 1 kinds of battery modules, it is characterised in that be provided with according to the cell described in any one in claim 7-11 in this battery modules.

13. 1 kinds of electrokinetic cells, including inclusion and the battery modules being arranged in this inclusion, it is characterised in that described battery modules is according to the battery modules described in claim 12.

14. 1 kinds of electric automobiles, it is characterised in that this electric automobile is provided with electrokinetic cell according to claim 13.