CN207800670U - A kind of power battery head cover - Google Patents
A kind of power battery head cover Download PDFInfo
- Publication number
- CN207800670U CN207800670U CN201820306557.1U CN201820306557U CN207800670U CN 207800670 U CN207800670 U CN 207800670U CN 201820306557 U CN201820306557 U CN 201820306557U CN 207800670 U CN207800670 U CN 207800670U
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- CN
- China
- Prior art keywords
- coping plate
- resistor disc
- power battery
- head cover
- cathode pole
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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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- Connection Of Batteries Or Terminals (AREA)
Abstract
The utility model discloses a kind of power battery head covers, including coping plate, Positive Poles and the positive conductive block being sheathed in Positive Poles.Resistor disc is additionally provided between positive conductive block and coping plate, coping plate is equipped with Positive Poles erecting bed, and Positive Poles erecting bed is boss structure, and Positive Poles erecting bed is equipped with resistor disc location hole.Resistor disc is equipped with positioning convex platform corresponding with resistor disc position of positioning hole and with coping plate in interference fit, and resistor disc mounting groove compatible with resistance plate shape is equipped in positive conductive block.In the present invention, the location hole for the positioning convex platform and coping plate that resistor disc is equipped with is interference fitted, positive conductive block is equipped with mounting groove compatible with resistor disc, resistor disc is installed in mounting groove, to keep the assembling structure of the assembling structure of cathode conductive film and resistor disc, resistor disc and coping plate firm, resistance is stablized, and reduces Assembly part, reduce assembly time, reduces manufacturing cost.
Description
Technical field
The utility model belongs to power battery field, more particularly to a kind of power battery head cover.
Background technology
As social economy develops by leaps and bounds, China has pressed European development hard in the investment of clean energy resource and green energy resource
Country, especially lithium-ion electric electrical automobile booming in recent years.The advantage of lithium ion battery exists：It is close with higher energy
Degree, power density, preferable cycle performance and reliable security performance.Power battery is referred to as the heart of pure electric automobile, and
The safety of battery and course continuation mileage are the two big bottlenecks for influencing lithium ion battery fast development at this stage.
Head cover is the important component of Hard-shell power battery at this stage.The battery core of corresponding high power type, it is desirable that its internal resistance
Small, in normal operation for cap structure, mainly composition is positive and negative electrode pole and resistance.The resistance value of resistance is too big, battery core
It cannot play a protective role compared with mini fuse silk because of loop current during overcharging；The resistance value of resistance is too small, when battery core needle pierces
The auxiliary protection function for reducing transient current is not had, and confined in resistance thickness, it is necessary to which bigger is cut
Area causes manufacturing cost to increase.Battery is being transported under operative scenario, and collision or extruding are unavoidable, this is resulted in
Resistance and head cover contact area change, and the corresponding resistance value of resistance also just changes.Therefore the work of the normal safety of battery
In the case of, ensure that the resistance suitably and stablized is necessary.
In the prior art, it is the stabilization for ensureing head cover resistance value, the connection of coping plate and resistor disc is frequently with being spirally connected, riveting
The technologies such as connect, weld, being keyed, although the stable connection of coping plate and resistor disc, in assembling process, parts are more,
Assembly process is more, is unfavorable for lowering manufacturing cost, and be only connected and fixed by pole between conducting block and resistor disc, conducting block and electricity
The connection for hindering piece is unstable, torsion displacement easily occurs, causes resistance value unstable.
Invention content
In order to solve the deficiencies in the prior art, the utility model provides a kind of power battery head cover, and coping plate is set
There are location hole, resistor disc to be equipped with the positioning convex platform being interference fitted with location hole, ensure that the contact area of resistance and coping plate is stablized,
Reduce Assembly part, reduce assembly work, reduce manufacturing cost, and location hole has positioning action, is assembled in battery cap
Extra frock clamp is not needed in the process；Positive conductive block is equipped with mounting groove, and resistor disc is installed in mounting groove, and resistor disc exists
It is in close contact with positive conductive block in mounting groove, is not susceptible to torsion displacement, ensure that contact of the positive conductive block with resistor disc
Area, steady resistance resistance value.
The utility model institute technique effect to be achieved is realized by following scheme：
A kind of power battery head cover, including coping plate, Positive Poles and the positive conductive block being sheathed in Positive Poles；
It is additionally provided with resistor disc between the positive conductive block and coping plate；
The coping plate is equipped with Positive Poles erecting bed, and the Positive Poles erecting bed is boss structure, the anode
Pole erecting bed is equipped with resistor disc location hole；The resistor disc be equipped with the resistor disc position of positioning hole it is corresponding and with
Coping plate is in the positioning convex platform being interference fitted；Resistor disc compatible with resistance plate shape is equipped in the positive conductive block to install
Slot.The resistor disc is installed in mounting groove.Mounting groove is adapted with resistance plate shape, both when resistor disc is mounted in mounting groove
When, resistor disc is not susceptible to displacement.
Resistor disc is assemblied on the erecting bed of coping plate, is in close contact with coping plate.The interference of location hole and positioning convex platform
Cooperation ensures that coping plate remains to be tightly coupled with resistor disc under the collision, extruding or Vibration Condition of battery, is not displaced.
Further, the positioning convex platform is cylindric, a diameter of 2-6 ㎜, is highly 0.5-3 ㎜.
Further, the quantity of the positioning convex platform is 2-8.
Positioning convex platform is cylindric, is on the one hand easy to the processing in corresponding shape localization hole, is on the one hand easy to position with top
The assembly in hole；Similarly, the diameter of positioning convex platform and the size range of height are not influence resistor disc and coping plate assembly tightly
In the case of close, it is easy to the processing and assembly of positioning convex platform and location hole.
Further, positioning convex platform outer rounded corner.After the rounded corner of positioning convex platform outer, outer is smaller than location hole,
When being assembled with resistor disc location hole, positioning convex platform outer is introduced into location hole and is positioned positioning convex platform, to resistance after positioning
Piece grants external force with coping plate, and positioning convex platform coordinates with resistor disc location hole.
Further, further include cathode pole and the negative conductive block being sheathed on cathode pole, gone back on the coping plate
Equipped with Positive Poles mounting hole and cathode pole mounting hole, the Positive Poles and the junction of cathode pole and coping plate are equipped with
Sealing ring, the sealing ring are sheathed on Positive Poles and cathode pole, and positioned at the lower end of coping plate, make coping plate and anode
The connection gap of sealed insulation and sealing positive and negative electrode pole and coping plate between pole, cathode pole.
Further, the cathode pole is electrically insulated with coping plate.
Further, further include the rotating sheet being fixedly arranged on the coping plate, and the rotating sheet and coping plate electricity
Connection.
Further, insulated plastic, and the insulated plastic gum cover are equipped between the coping plate and the negative conductive block
On cathode pole.Insulated plastic makes to be electrically insulated between cathode pole and coping plate.
Further, the coping plate is equipped with cathode pole erecting bed, and the cathode pole erecting bed is boss structure, institute
It states cathode pole erecting bed and is equipped with rotating sheet mounting groove, rotating sheet is equipped in the rotating sheet mounting groove.Rotating sheet mounting groove
It is adapted with the shape size of rotating sheet, rotating sheet is fixed in rotating sheet mounting groove, when cell internal pressure is more than benchmark
When pressure, it is electrically connected with negative conductive block after rotating sheet overturning, forms a protective loop between Positive Poles and cathode pole.
Further, the middle part of the coping plate is equipped with explosion-proof valve, and the explosion-proof valve lower end is equipped with emergency support.Work as electricity
Pond internal short-circuit and when generating bulk gas, emergency support can avoid deforming under the impact of gas, will not cause explosion-proof valve
Blocking, can prevent power battery air pressure inside is excessive to cause battery explosion, improve the safety in utilization of battery.
The utility model has the following advantages：
1, coping plate is equipped with location hole, and resistor disc is equipped with the positioning convex platform being interference fitted with location hole, reduces assembling process
The parts of middle needs, and reduce assembly time.Meanwhile in assembling process, location hole have positioning action, with top
Frock clamp is not needed in lid assembling process, reduces manufacturing cost.
2, location hole and positioning convex platform are interference fitted, and keep the assembly of coping plate and resistor disc firm, coping plate and resistor disc
Contact surface stablize, there is stable resistance value, improve the usage safety performance of battery core.
3, positive conductive block is equipped with mounting groove compatible with resistance plate shape, and resistor disc is installed in mounting groove, makes just
It is consolidated between pole conducting block and resistor disc, resistor disc is in close contact in mounting groove with positive conductive block, is not susceptible to torsion and is moved
Position, ensure that the contact area of positive conductive block and resistor disc, steady resistance resistance value.
Description of the drawings
Fig. 1 is the three-dimensional assembling schematic diagram of power battery head cover in the utility model；
Fig. 2 is the structural schematic diagram of resistor disc in the utility model；
Fig. 3 is the structural schematic diagram of positive conductive block in the utility model；
Fig. 4 is the structural schematic diagram of power battery head cover in the utility model；
Fig. 5 is the enlarged drawing at A in attached drawing 4；
Accompanying drawings symbol description：1, coping plate；2, Positive Poles；3, cathode pole；4, sealing ring；5, rotating sheet；11, positive
Pole mounting hole；12, Positive Poles erecting bed；13, explosion-proof valve；14, emergency support；15, cathode pole erecting bed；16, cathode
Pole mounting hole；21, positive conductive block；22, resistor disc；31, negative conductive block；32, insulated plastic；121, resistor disc positions
Hole；211, resistor disc mounting groove；221, positioning convex platform；100, metal shell.
Specific implementation mode
The embodiments of the present invention are described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning
Identical element is indicated to identical element numbers eventually.The embodiments described below with reference to the accompanying drawings are exemplary, it is intended to
For explaining the utility model, and it is not considered as limiting the invention.
Power battery head cover according to the ... of the embodiment of the present invention is described referring to Fig. 1-Fig. 5.
In the present embodiment as shown in Fig. 1, power battery head cover includes coping plate 1, Positive Poles 2 and is sheathed on anode
Positive conductive block 21, cathode pole 3 on pole and the negative conductive block 31 being sheathed on cathode pole, coping plate are equipped with just
Pole pole mounting hole 11 and cathode pole mounting hole 16.
Resistor disc 22 is additionally provided between positive conductive block and coping plate.Coping plate is equipped with Positive Poles erecting bed 12, just
Pole pole erecting bed is boss structure, and Positive Poles erecting bed is equipped with resistor disc location hole 121.
As shown in Fig. 2, resistor disc is equipped with identical as resistor disc position of positioning hole and is in interference fit with coping plate
Positioning convex platform 221.Resistor disc is assemblied on the erecting bed of coping plate, is in close contact with coping plate.Resistor disc location hole and positioning
The interference fit of boss ensures that coping plate remains to be tightly coupled with resistor disc under the collision, extruding or Vibration Condition of battery,
It is not displaced.
As shown in Fig. 3, resistor disc mounting groove compatible with resistance plate shape 211 is equipped in positive conductive block.Resistance
Piece is installed in resistor disc mounting groove.Resistor disc mounting groove is adapted with resistance plate shape, both when resistor disc is mounted on resistor disc
When in mounting groove, resistor disc is not susceptible to displacement, and positive conductive block 21 and the contact area of resistor disc 22 are stablized, and power battery is made
Resistance value stabilization be unlikely to generate high current, to go out when short circuit occurs for Positive Poles and power battery metal-back
Existing spark phenomenon, further improves the usage safety performance of power battery.The resistor disc mounting groove wherein one of positive conductive block
A direction be it is open, the purpose is to conducting block can direct punch forming, control manufacturing cost, and can reduce resistance with it is conductive
The assembly difficulty of block.
Positioning convex platform is cylindric, a diameter of 2-6 ㎜, is highly 0.5-3 ㎜.The quantity of positioning convex platform is 2-8.At this
In embodiment, the quantity of positioning convex platform is 2, and on the relative angle of resistor disc.Positioning convex platform is cylindric, and one side is easily
On the one hand processing in corresponding shape localization hole is easy to the assembly with top location hole；Similarly, the diameter and height of positioning convex platform
The size range of degree be in the case where not influencing resistor disc and coping plate fitting tight, be easy to positioning convex platform and location hole plus
Work and assembly.
Positioning convex platform outer rounded corner.After the rounded corner of positioning convex platform outer, outer is smaller than location hole, positioning convex platform with electricity
When hindering the assembly of piece location hole, positioning convex platform outer is introduced into location hole and is positioned, and is granted to resistor disc and coping plate after positioning
External force, positioning convex platform coordinate with resistor disc location hole.
Cathode pole is electrically insulated with coping plate, and Positive Poles and the junction of cathode pole and coping plate are equipped with sealing ring 4,
Sealing ring is sheathed on Positive Poles 2 and cathode pole 3, and positioned at the lower end of coping plate 1, is made coping plate and Positive Poles, born
The connection gap of insulation and sealing positive and negative electrode pole and coping plate between the pole of pole.Sealing ring 4 is made pottery using heat safe insulation
Ceramic material, when preventing power battery from working, positive and negative electrode pole generates hot scorification sealing ring.
Further include the rotating sheet 5 being fixedly arranged on coping plate, rotating sheet is electrically connected with coping plate 1, and electrical connection is two connected
Connector between it is mutually conductive, rotating sheet is connect with negative conductive block, when power battery internal pressure is more than reference pressure,
It is electrically connected with negative conductive block after rotating sheet overturning.Negative conductive block is contacted when rotating sheet is overturn, so that Positive Poles and cathode
Protective loop is formed between pole.
Positive Poles are electrically connected by resistor disc with coping plate, and cathode pole is electrically insulated with coping plate, work as power battery
In the case where overcharging, generated reactive gas in power battery, in battery air pressure increase, rotating sheet 5 action and connection sheet upwards
Contact, and connection sheet is connected to cathode pole, and protection circuit at this moment can be formed between Positive Poles and cathode pole, prevents electricity
Pond overcharges explosion, improves the security performance of power battery.
The material of positive and negative electrode conducting block is copper.Copper has good conductive property, conductive when rotating sheet is overturn, will be electric
It spreads and passs cathode pole, make to form protective loop between Positive Poles and cathode pole, fully ensure that the safe to use of battery.
Insulated plastic 32 is equipped between coping plate 1 and negative conductive block 31, and insulated plastic is sheathed on cathode pole 3.
Insulated plastic makes to be electrically insulated between cathode pole and coping plate.
Coping plate is equipped with cathode pole erecting bed 15, and cathode pole erecting bed is boss structure, on cathode pole erecting bed
Equipped with rotating sheet mounting groove（It is not identified in figure）, rotating sheet mounting groove is interior to be equipped with rotating sheet 5.Rotating sheet mounting groove and rotating sheet
Shape size is adapted, and rotating sheet is fixed in rotating sheet mounting groove, when cell internal pressure is more than reference pressure, overturning
Piece overturning is connect with negative terminal by negative conductive block, and a protective loop is formed between Positive Poles and cathode pole.
Explosion-proof valve 13 is equipped at the center of coping plate, and explosion-proof valve lower end is equipped with emergency support 14.Emergency support, which has, to be increased
The structure of strong intensity, when internal short-circuit of battery generates bulk gas, emergency support can avoid becoming under the impact of gas
Shape will not cause the blocking of explosion-proof valve, can prevent power battery air pressure inside is excessive to cause battery explosion, improve making for battery
Use safety.
As shown in Fig. 4, power battery head cover is assembled together with naked battery core, draws extrinsic current.Power battery is normal
Circuit theory when work is electric current by lug, is flexible coupling, Positive Poles 2, Positive Poles conducting block 21, cathode pole 3, negative
Pole pole conducting block 31 is drawn, while keeping the metal shell 100 of naked battery core positively charged.Under power battery overcharge conditions, power
Generated reactive gas in battery, air pressure increase, and rotating sheet acts upwards, at this time negative conductive block, rotating sheet, coping plate, resistance
Piece, positive conductive block, being flexible coupling forms an external loop.When electric current is sufficiently large, fuse wire, cut-off loop, fully
It ensure that battery is safe to use.
Finally, it should be noted that above example be only to illustrate the embodiment of the present invention technical solution rather than to its into
Row limitation, although the embodiment of the present invention is described in detail with reference to preferred embodiment, those skilled in the art
It should be understood that the technical solution of the embodiment of the present invention can be still modified or replaced equivalently, and these are changed or wait
The range of modified technical solution disengaging technical solution of the embodiment of the present invention cannot also be made with replacement.
Claims (10)
1. a kind of power battery head cover, including coping plate, Positive Poles and the positive conductive block being sheathed in Positive Poles, special
Sign is：
It is additionally provided with resistor disc between the positive conductive block and coping plate；
The coping plate is equipped with Positive Poles erecting bed, and the Positive Poles erecting bed is boss structure, the Positive Poles
Erecting bed is equipped with resistor disc location hole；The resistor disc is equipped with the resistor disc position of positioning hole corresponding and and head cover
Piece is in the positioning convex platform being interference fitted；Resistor disc mounting groove compatible with resistance plate shape is equipped in the positive conductive block.
2. power battery head cover as described in claim 1, which is characterized in that the positioning convex platform is cylindric, a diameter of 2-6
㎜ is highly 0.5-3 ㎜.
3. power battery head cover as described in claim 1, which is characterized in that the quantity of the positioning convex platform is 2-8.
4. power battery head cover as described in claim 1, which is characterized in that positioning convex platform outer rounded corner.
5. power battery head cover as described in claim 1, which is characterized in that further include cathode pole and be sheathed on cathode pole
On negative conductive block, be additionally provided with Positive Poles mounting hole and cathode pole mounting hole, the Positive Poles on the coping plate
It is equipped with sealing ring with the junction of cathode pole and coping plate, the sealing ring is sheathed on Positive Poles and cathode pole, and
Positioned at the lower end of coping plate.
6. power battery head cover as claimed in claim 5, which is characterized in that the cathode pole is electrically insulated with coping plate.
7. power battery head cover as claimed in claim 5, which is characterized in that further include the overturning being fixedly arranged on the coping plate
Piece, and the rotating sheet is electrically connected with the coping plate.
8. power battery head cover as claimed in claim 5, which is characterized in that between the coping plate and the negative conductive block
Equipped with insulated plastic, and the insulated plastic is sheathed on cathode pole.
9. power battery head cover as claimed in claim 5, which is characterized in that the coping plate is equipped with cathode pole erecting bed,
The cathode pole erecting bed is boss structure, and the cathode pole erecting bed is equipped with rotating sheet mounting groove, the rotating sheet
Rotating sheet is equipped in mounting groove.
10. power battery head cover as claimed in claim 5, which is characterized in that the middle part of the coping plate is equipped with explosion-proof valve, and
The explosion-proof valve lower end is equipped with emergency support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820306557.1U CN207800670U (en) | 2018-03-06 | 2018-03-06 | A kind of power battery head cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820306557.1U CN207800670U (en) | 2018-03-06 | 2018-03-06 | A kind of power battery head cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207800670U true CN207800670U (en) | 2018-08-31 |
Family
ID=63276554
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820306557.1U Active CN207800670U (en) | 2018-03-06 | 2018-03-06 | A kind of power battery head cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207800670U (en) |
-
2018
- 2018-03-06 CN CN201820306557.1U patent/CN207800670U/en active Active
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20191022 Granted publication date: 20180831 |
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| PP01 | Preservation of patent right | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20221022 Granted publication date: 20180831 |
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| PD01 | Discharge of preservation of patent | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20221022 Granted publication date: 20180831 |
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| PP01 | Preservation of patent right |