CN207217604U - The battery cover board and secondary rectangular cell of the device containing current-limiting resistance - Google Patents
The battery cover board and secondary rectangular cell of the device containing current-limiting resistance Download PDFInfo
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- CN207217604U CN207217604U CN201721115837.6U CN201721115837U CN207217604U CN 207217604 U CN207217604 U CN 207217604U CN 201721115837 U CN201721115837 U CN 201721115837U CN 207217604 U CN207217604 U CN 207217604U
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- Prior art keywords
- limiting resistance
- current
- cover board
- battery cover
- terminal plate
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The utility model discloses a kind of battery cover board of device containing current-limiting resistance, the battery cover board includes cover board body, negative terminal plate, negative pole pole, positive terminal plate, Positive Poles, also include current-limiting resistance device, the current-limiting resistance device includes on cover board body and through hole corresponding with the negative terminal plate, the through hole is fixedly connected with the metal rotating sheet of spill, the metal rotating sheet upper surface is fixedly connected with current-limiting resistance, and current-limiting resistance is not in contact with negative terminal plate.The invention also discloses a kind of secondary rectangular cell of the battery cover board including the device containing current-limiting resistance.In current-limiting resistance device, after metal rotating sheet is under pressure generation projection, current-limiting resistance is subjected to displacement with metal rotating sheet, and is contacted with negative terminal plate, is played a part of limiting electric current, consumption electric energy, is improved battery security.
Description
Technical field
It the utility model is related to technical field of lithium ion.More particularly, to a kind of electricity of device containing current-limiting resistance
Pond cover plate and secondary rectangular cell.
Background technology
Under International Environmental Protection pressure, in the commanding elevation of contention New Energy Industry, China more increases energy-saving and emission-reduction for various countries
Working dynamics.New energy industry, particularly ev industry just by leaps and bounds develop at home, and the thing followed is city
Requirement more and more higher of the field to product, such as：To use safer rectangular cell, the service life of battery will at 8 years or so,
Battery can not have potential safety hazard etc..Lithium ion battery has the advantages that voltage height, long lifespan, energy density are high, light, and it is applied
Field is also constantly expanding.But the uneasy omnicharacteristic of lithium ion battery and cumbersome Making programme determine inside lithium ion cell
More potential safety hazard be present.
When power lithium-ion battery overcharges, the material such as its internal electrolyte can crack generation gas so that outside battery
Shell bulging ruptures, and allows oxygen to enter and be deposited in the lithium ion reaction of negative terminal surface, and then explodes.How lithium-ion electric to be allowed
Pond in use will not the blast on fire because of internal short-circuit of battery, allow its performance to perform to ultimate attainment state, become lithium
One problem of electric industry.
For solve lithium ion battery use during security hidden trouble, it is desirable to provide a kind of new battery cover board and
Secondary rectangular cell.
Utility model content
The purpose of this utility model is to provide a kind of battery cover board of device containing current-limiting resistance and comprising the battery cover board
Secondary rectangular cell, the current-limiting resistance device is made up of concave metal rotating sheet and current-limiting resistance, can occur in battery different
Chang Shi, the electric energy of battery storage is discharged, the generation for phenomena such as effectively preventing short circuit during battery use, blast.
In order to solve the above technical problems, the utility model uses following technical proposals：
The utility model provides a kind of battery cover board of the device containing current-limiting resistance, the battery cover board include cover board body,
Negative terminal plate, negative pole pole, positive terminal plate, Positive Poles；The positive terminal plate and negative terminal plate are separately positioned on
The left and right ends of the cover board body upper surface；The Positive Poles and negative pole pole are separately positioned on positive terminal plate and negative pole
The upper surface of terminal board；The battery cover board also includes current-limiting resistance device, and the current-limiting resistance device includes being located at cover plate sheet
On body and through hole corresponding with the negative terminal plate, the through hole are fixedly connected with the metal rotating sheet of spill, the metal
Rotating sheet upper surface is fixedly connected with current-limiting resistance, and current-limiting resistance is not in contact with negative terminal plate.
Preferably, the battery cover board also includes being arranged on cover board body upper surface, and is located at positive terminal plate and negative pole
Burst disk and liquid injection hole between terminal board.
Preferably, the through hole is located at negative pole pole close to the side of Positive Poles or the side of remote Positive Poles.
Preferably, the metal rotating sheet of the spill is circular aluminium flake.
Preferably, the outward flange of the metal rotating sheet is fixedly connected on the bottom of the through hole by way of laser welding
Portion.
Preferably, the current-limiting resistance is fixedly connected on the metal rotating sheet upper surface by way of laser welding
Center.
Preferably, the current-limiting resistance is any one in cylindrical, square or taper type, and its top surface is put down for smooth
Face or on-plane surface.
Preferably, the material of the current-limiting resistance is metal or alloy.
The utility model also provides a kind of secondary rectangular cell, and the secondary square battery bag includes described containing current-limiting resistance dress
The battery cover board put.
The beneficial effects of the utility model are as follows：
The utility model provides a kind of battery cover board of device containing current-limiting resistance and includes the quadratic power of the battery cover board
Shape battery, when metal rotating sheet in the current-limiting resistance device is by excessive pressure, convex can be become by spill；With metal
The current-limiting resistance that rotating sheet is fixedly connected can be subjected to displacement upwards with the raised of metal rotating sheet, and then and negative terminal plate
It is in close contact and realizes and conducts.
When battery overcharges or outside batteries connection is short-circuit, the pressure increase of inside battery, metal rotating sheet can be convex
Rise, current-limiting resistance is contacted work with negative terminal plate, battery core is by external shell and anode and cathode terminals plate contact short circuit, current limliting electricity
Resistance and external shell can consume the electric energy overcharged rapidly by heat production, so as to reduce the risk of battery catches fire blast, greatly improve
The battery cover board of the utility model device containing current-limiting resistance and the security performance of secondary rectangular cell.
When there is external conductor to run through battery battery core, short circuit occurs for inside battery, now has high current and flows, electricity
Pond internal pressure increase, easily causes the blast on fire of battery.The device provided by the utility model containing current-limiting resistance it is secondary square
Battery, when by excessive pressure, metal rotating sheet projection makes current-limiting resistance contact work with negative terminal plate, can pass through limit
Leakage resistance and external shell consumption electric energy, the risk of reduction battery catches fire blast, greatly improve the utility model and contain current-limiting resistance
The security performance of the battery cover board of device and secondary rectangular cell.
Brief description of the drawings
Specific embodiment of the present utility model is described in further detail below in conjunction with the accompanying drawings.
Fig. 1 is the current-limiting resistance schematic device in battery cover board and secondary rectangular cell；
Fig. 2 is the battery cover board top view of the device containing current-limiting resistance；
Fig. 3 is the battery cover board schematic perspective view of the device containing current-limiting resistance；
Fig. 4 is the battery cover board perspective plan view of the device containing current-limiting resistance；
Fig. 5 is the battery cover board schematic perspective view of the device containing current-limiting resistance；
Fig. 6 is the battery cover board Longitudinal cross section schematic of the device containing current-limiting resistance；
Fig. 7 is the battery cover board perspective view of the device containing current-limiting resistance.
Description of reference numerals：
1st, current-limiting resistance device 11, current-limiting resistance 12, metal rotating sheet 2, negative pole pole 3, negative terminal plate 4, lid
Plate body 5, burst disk 6, liquid injection hole 7, positive terminal plate 8, Positive Poles.
Embodiment
In order to illustrate more clearly of the utility model, the utility model is done into one with reference to preferred embodiments and drawings
The explanation of step.Similar part is indicated with identical reference in accompanying drawing.It will be appreciated by those skilled in the art that below
Specifically described content is illustrative and be not restrictive, and should not limit the scope of protection of the utility model with this.
In a preferred embodiment of the present utility model, there is provided a kind of battery cover board of device containing current-limiting resistance 1, and
Secondary rectangular cell including the battery cover board.Current-limiting resistance 11 in the current-limiting resistance device 1 can turn over metal
Rotor 12 is changed into the process of convex by spill and is subjected to displacement upwards, and then is in close contact with negative terminal plate 3 and realizes electricity
Conducting, when the abnormal conditions such as over-charging of battery occur during battery use, the pressure of inside battery can increase, metal rotating sheet
12 projections make current-limiting resistance 11 contact work with negative terminal plate 3, and current-limiting resistance 11 and external shell are consumed rapidly by heat production
Electric energy, so as to reduce the risk of battery catches fire blast, greatly improve the security performance of battery cover board and secondary rectangular cell.
Specifically, with reference to shown in Fig. 2 to Fig. 7：
Fig. 2 is the battery cover board top view of the device containing current-limiting resistance；
Fig. 3 is the battery cover board schematic perspective view of the device containing current-limiting resistance；
Fig. 4 is the battery cover board perspective plan view of the device containing current-limiting resistance；
Fig. 5 is the battery cover board schematic perspective view of the device containing current-limiting resistance；
Fig. 6 is the battery cover board Longitudinal cross section schematic of the device containing current-limiting resistance；
Fig. 7 is the battery cover board perspective view of the device containing current-limiting resistance.
The battery cover board includes：Cover board body 4, negative terminal plate 3, negative pole pole 2, positive terminal plate 7, Positive Poles
8.The positive terminal plate 7 and negative terminal plate 3 are separately positioned on the left and right ends of the upper surface of cover board body 4, it is described just
Pole pole 8 and negative pole pole 2 are vertically provided at the upper surface of positive terminal plate 7 and negative terminal plate 3 respectively.
Further, the battery cover board also includes current-limiting resistance device 1.Specifically, as shown in figure 1, Fig. 1 is this practicality
New current-limiting resistance schematic device.The current-limiting resistance device 1 include it is corresponding with negative terminal plate 3, on cover board body 4
The through hole set along the thickness direction of cover board body 4.Preferably, the through hole is located at the one of the close Positive Poles 8 of negative pole pole 2
Side, or the side of the remote Positive Poles 8 in negative pole pole 2, but need to avoid in the underface of negative pole pole 2, because
The underface of negative pole pole 2 is connected with other inside battery structures.
Further, the through hole is fixedly connected with the metal rotating sheet 12 of spill, the upper surface of metal rotating sheet 12
It is fixedly connected with current-limiting resistance 11.Under normal usage, current-limiting resistance 11 is not in contact with negative terminal plate 3.And when electricity
When pond the abnormal conditions such as overcharges and occurred, cell internal pressure increase, current-limiting resistance 11 can be as metal rotating sheet 12 be by spill
It is changed into the process of convex and is subjected to displacement upwards, and then is in close contact and realizes with negative terminal plate 3 and conduct, current-limiting resistance
Electric energy is consumed rapidly by heat production with external shell, so as to reduce battery catches fire blast risk, greatly improve battery cover board and
The security performance of secondary rectangular cell.
Preferably, the battery cover board also includes being arranged on the upper surface of cover board body 4, and positioned at positive terminal plate 7 and bears
Burst disk 5 and liquid injection hole 6 between extreme daughter board 3.Burst disk 5 can ensure the security of battery product, and liquid injection hole 6 can be noted
Enter battery electrolyte.
Preferably, the metal rotating sheet 12 of the spill is circular aluminium flake, and circular metal rotating sheet 12 can be with the bottom of through hole
Portion's closed butt joint, the material not only good conductivity, and plasticity is strong of metallic aluminium, easily deforms under stress.In this reality
With in new other embodiment, the shape of the metal rotating sheet 12 can also be that other can be issued in the condition of being under pressure
The shape of raw deformation, material can also be the metal that other are prone to deformation and can be conductive, and the utility model is not subject to this
Limitation.
Preferably, the outward flange of the metal rotating sheet 12 is fixedly connected on the through hole by way of laser welding
Bottom.The precision of laser welding is high, and intensity is big so that current-limiting resistance device globality is stronger；By the outside of metal rotating sheet 12
The bottom of edge and through hole is welded, and can simplify manufacture craft so that the process of welding is easier to operate to.
Preferably, the current-limiting resistance 11 is fixedly connected on the upper table of metal rotating sheet 12 by way of laser welding
The center in face, such current-limiting resistance 11 can produce displacement to greatest extent with the projection of metal rotating sheet 12 so that
The current-limiting resistance device 1 reacts much sooner when abnormal pressure is produced to inside battery.
Preferably, the current-limiting resistance 11 is taper type, and resistance value is arranged to 1m Ω -20m Ω, can play limitation 100A-
The effect of 300A electric currents.In other embodiments, current-limiting resistance 11 can also be cylindrical, square or other shapes, resistance value
Other scopes are could be arranged to, the utility model is not any limitation as to this.
Preferably, the top surface of the current-limiting resistance 11 is smooth planar structure, in current-limiting resistance 11 with metal rotating sheet
After 12 projection is subjected to displacement upwards, realization can be in close contact with negative terminal plate 3 and conducted.It is of the present utility model other
In embodiment, the top surface of the current-limiting resistance can also be smooth nonplanar structure.
Preferably, the material of the current-limiting resistance 11 is conductive metal or alloy.When overcharging or battery short circuit
Etc. abnormal conditions when, by excessive pressure projection can be occurred for metal rotating sheet 12, and current-limiting resistance 11 can occur with metal rotating sheet
Displacement, and with negative terminal plate 3 lower surface close contact discharge, play limitation electric current, consumption electric energy, improve battery security
Effect.
In the present embodiment, a kind of secondary rectangular cell is also provided, the secondary square battery bag, which includes, described contains current-limiting resistance
The battery cover board of device 1.When generation over-charging of battery, there is external conductor through the danger such as battery battery core or outside batteries connection short circuit
During situation, the pressure of inside battery is more than the maximum pressure that metal rotating sheet 12 can bear, and metal rotating sheet 12 raises up,
Convex is become by spill, current-limiting resistance 11 can therewith be subjected to displacement and be made electrical contact with negative terminal plate 3 and be started working, be disappeared rapidly
Consumption release electric energy, the generation for phenomena such as effectively preventing short circuit during secondary rectangular cell use, blast, greatly improves quadratic power
The security performance of shape battery.
Obviously, above-described embodiment of the present utility model is only intended to clearly illustrate the utility model example, and
It is not the restriction to embodiment of the present utility model, for those of ordinary skill in the field, in described above
On the basis of can also make other changes in different forms, all embodiments can not be exhaustive here,
It is every to belong to obvious changes or variations that the technical solution of the utility model is extended out still in of the present utility model
The row of protection domain.
Claims (9)
1. the battery cover board of a kind of device containing current-limiting resistance, it is characterised in that the battery cover board includes cover board body, negative pole end
Daughter board, negative pole pole, positive terminal plate, Positive Poles；The positive terminal plate and negative terminal plate are separately positioned on the lid
The left and right ends of plate body upper surface；The Positive Poles and negative pole pole are separately positioned on positive terminal plate and negative terminal plate
Upper surface；The battery cover board also includes current-limiting resistance device, the current-limiting resistance device include on cover board body and
Through hole corresponding with the negative terminal plate, the through hole are fixedly connected with the metal rotating sheet of spill, the metal rotating sheet
Upper surface is fixedly connected with current-limiting resistance, and current-limiting resistance is not in contact with negative terminal plate.
2. the battery cover board of the device according to claim 1 containing current-limiting resistance, it is characterised in that the battery cover board also wraps
Include and be arranged on cover board body upper surface, and burst disk and liquid injection hole between positive terminal plate and negative terminal plate.
3. the battery cover board of the device according to claim 1 containing current-limiting resistance, it is characterised in that the through hole is located at negative pole
The side of the close Positive Poles of pole, or the side of the remote Positive Poles positioned at negative pole pole.
4. the battery cover board of the device according to claim 1 containing current-limiting resistance, it is characterised in that the metal of the spill turns over
Rotor is circular aluminium flake.
5. the battery cover board of the device according to claim 1 containing current-limiting resistance, it is characterised in that the metal rotating sheet
Outward flange is fixedly connected on the bottom of the through hole by way of laser welding.
6. the battery cover board of the device according to claim 1 containing current-limiting resistance, it is characterised in that the current-limiting resistance passes through
The mode of laser welding is fixedly connected on the center of the metal rotating sheet upper surface.
7. the battery cover board of the device according to claim 1 containing current-limiting resistance, it is characterised in that the current-limiting resistance is circle
Any one in cylindricality, square or taper type, its top surface is smooth plane or on-plane surface.
8. the battery cover board of the device according to claim 1 containing current-limiting resistance, it is characterised in that the material of the current-limiting resistance
Matter is metal or alloy.
9. the secondary rectangular cell of a kind of device containing current-limiting resistance, it is characterised in that including as described in claim 1-8 is any
The battery cover board of the device containing current-limiting resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721115837.6U CN207217604U (en) | 2017-09-01 | 2017-09-01 | The battery cover board and secondary rectangular cell of the device containing current-limiting resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721115837.6U CN207217604U (en) | 2017-09-01 | 2017-09-01 | The battery cover board and secondary rectangular cell of the device containing current-limiting resistance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207217604U true CN207217604U (en) | 2018-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721115837.6U Active CN207217604U (en) | 2017-09-01 | 2017-09-01 | The battery cover board and secondary rectangular cell of the device containing current-limiting resistance |
Country Status (1)
| Country | Link |
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| CN (1) | CN207217604U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107681071A (en) * | 2017-09-01 | 2018-02-09 | 河南新太行电源股份有限公司 | The battery cover board and secondary rectangular cell of the device containing current-limiting resistance |
-
2017
- 2017-09-01 CN CN201721115837.6U patent/CN207217604U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107681071A (en) * | 2017-09-01 | 2018-02-09 | 河南新太行电源股份有限公司 | The battery cover board and secondary rectangular cell of the device containing current-limiting resistance |
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