CN109585748A - A kind of power battery explosion protection structure - Google Patents
A kind of power battery explosion protection structure Download PDFInfo
- Publication number
- CN109585748A CN109585748A CN201811514230.4A CN201811514230A CN109585748A CN 109585748 A CN109585748 A CN 109585748A CN 201811514230 A CN201811514230 A CN 201811514230A CN 109585748 A CN109585748 A CN 109585748A
- Authority
- CN
- China
- Prior art keywords
- explosion
- proof valve
- gas vent
- power battery
- end cap
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/342—Non-re-sealable arrangements
- H01M50/3425—Non-re-sealable arrangements in the form of rupturable membranes or weakened parts, e.g. pierced with the aid of a sharp member
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
- H01M50/183—Sealing members
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/317—Re-sealable arrangements
- H01M50/325—Re-sealable arrangements comprising deformable valve members, e.g. elastic or flexible valve members
- H01M50/333—Spring-loaded vent valves
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/35—Gas exhaust passages comprising elongated, tortuous or labyrinth-shaped exhaust passages
-
- 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
Abstract
The present invention relates to a kind of power battery explosion protection structures, including explosion-proof valve and cover board, the cover board is welded on the top of battery case, the connecting hole for installing explosion-proof valve is offered on the cover board, the explosion-proof valve is mounted in connecting hole, gas vent is offered at the center of the explosion-proof valve, spool is provided in the gas vent, the valve core piston formula is connected in gas vent, the upper end of the explosion-proof valve is connected with end cap, the spool is connected by spring with end cap, exhaust passage is provided in the explosion-proof valve, the both ends of the exhaust passage are connected with gas vent respectively, through-hole is offered at the center of the end cap；The design has the advantages that structure is simple, easily fabricated and practical and efficient.
Description
Technical field
The present invention relates to power battery technology field, especially a kind of power battery explosion protection structure.
Background technique
Power battery in use, due to over-charging of battery, over-discharge, short circuit and other reasons, it is possible to cause in battery
Portion generates the gas of high temperature and pressure, if these high temperature and high pressure gas cannot be discharged into outside batteries in time, it is possible to lead to electricity
Pond disintegrates, explodes, is on fire, and major accident occurs.So power battery is generally all provided with release internal pressure function
Blast resistance construction avoids battery explosion, improves and use for outside batteries to be discharged in the high temperature of inside battery, high pressure gas in time
Safety.
The blast resistance construction of current driving force battery is generally combined into an entirety with coping plate, needs in addition to process on coping plate
There is an electrolyte filling hole, after last battery completes all process steps, then electrolyte filling hole is sealed.Since electrolyte filling hole is straight
Diameter is smaller, causes electrolyte filling efficiency very low, and the requirement to perfusion equipment is also relatively high, simultaneously because more sealing works together
There is the insecure possibility of sealing in sequence, more hidden danger points of a leakage for battery.
Summary of the invention
The present invention offers spare gas vent in spool, and is provided with rupture pressure disc in spare gas vent, by explosion-proof
Film plays the role of self-protection, when can not be by exhaust passage air intake-exhaust, can be arranged by spare gas vent
Gas plays the role of increasing the practicality energy；A kind of power battery explosion protection structure is provided.
In order to solve the above technical problems, structure of the invention includes explosion-proof valve and cover board, and the cover board is welded on electricity
The top of pond shell, the connecting hole for installing explosion-proof valve is offered on the cover board, and the explosion-proof valve is mounted on connection
In hole, gas vent is offered at the center of the explosion-proof valve, and spool, the valve core piston are provided in the gas vent
Formula is connected in gas vent, and the upper end of the explosion-proof valve is connected with end cap, and the spool is connected by spring with end cap, institute
Exhaust passage is provided in the explosion-proof valve stated, the both ends of the exhaust passage are connected with gas vent respectively, the end cap
Center at offer through-hole.
Further, the upper end of the connecting hole, which is equipped with, is formed together the heavy of sealing structure with the shaft shoulder of the explosion-proof valve
Hole is provided with sealing ring in the counterbore.
Further: the bottom of the cover board is provided with retaining ring pallet, and the periphery of the explosion-proof valve lower end offers
Circlip groove is equipped with flexible retaining ring between the circlip groove, the cover board bottom and retaining ring pallet.
Further: spare gas vent is offered in the spool, the spare gas vent is welded with explosion-proof
Film.
Further: the rupture pressure disc is equipped with explosion indentation.
Further: the bottom of the end cap offers threaded hole, is provided on the outer wall of the explosion-proof valve upper end
The upper end of external connection screw, the explosion-proof valve is connected in the threaded hole of end cap bottom by external connection screw.
After adopting the above structure, the present invention offers spare gas vent in spool, and is provided in spare gas vent
Rupture pressure disc plays the role of self-protection by rupture pressure disc, can be by standby when can not be by exhaust passage air intake-exhaust
It is exhausted with gas vent, plays the role of increasing the practicality energy；And the design also has structure simple, easily fabricated
With practical and efficient advantage.
Detailed description of the invention
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
Fig. 1 is the structural diagram of the present invention.
Specific embodiment
A kind of power battery explosion protection structure as shown in Figure 1, including explosion-proof valve 2 and cover board 1, the cover board 1 are welded on
The top of battery case, the connecting hole for installing explosion-proof valve 2 is offered on the cover board 1, and the explosion-proof valve 2 is mounted on
In connecting hole, gas vent 4 is offered at the center of the explosion-proof valve 2, and spool 5 is provided in the gas vent 4, it is described
5 piston type of spool is connected in gas vent 4, and the upper end of the explosion-proof valve 2 is connected with end cap 3, and the spool 5 passes through spring
11 are connected with end cap 3, are provided with exhaust passage 10 in the explosion-proof valve 2, the both ends of the exhaust passage 10 respectively with row
Stomata 4 is connected, and offers through-hole 9 at the center of the end cap 3.When the intracorporal air pressure of battery case is excessively high, can pass through
Exhaust passage is exhausted, and has the advantages that structure is simple, easily fabricated and practical and efficient.
The upper end of connecting hole as shown in Figure 1 is equipped with the counterbore that sealing structure is formed together with the shaft shoulder of the explosion-proof valve 2,
Sealing ring 12 is provided in the counterbore.
The bottom of cover board 1 as shown in Figure 1 is provided with retaining ring pallet 14, and the periphery of 2 lower end of explosion-proof valve offers
Circlip groove is equipped with flexible retaining ring 13 between the circlip groove, 1 bottom of the cover board and retaining ring pallet 14.
Spare gas vent 6 is offered in spool 5 as shown in Figure 1, the spare gas vent 6 is welded with rupture pressure disc
7, the rupture pressure disc 7 is equipped with explosion indentation 8.The present invention offers spare gas vent in spool, and in spare gas vent
It is inside provided with rupture pressure disc, self-protection is played the role of by rupture pressure disc, it, can when can not be by exhaust passage air intake-exhaust
To be exhausted by spare gas vent, play the role of increasing the practicality energy.
The bottom of end cap 3 as shown in Figure 1 offers threaded hole, is provided on the outer wall of 2 upper end of explosion-proof valve outer
Screw thread is connect, the upper end of the explosion-proof valve 2 is connected in the threaded hole of 3 bottom of end cap by external connection screw.
Claims (6)
1. a kind of power battery explosion protection structure, it is characterised in that: including explosion-proof valve (2) and cover board (1), the cover board (1) weldering
The connecting hole offered on the top of battery case, the cover board (1) for installing explosion-proof valve (2) is connect, described is explosion-proof
Valve (2) is mounted in connecting hole, is offered at the center of the explosion-proof valve (2) gas vent (4), in the gas vent (4)
It is provided with spool (5), the spool (5) piston type is connected in gas vent (4), the upper end connection of the explosion-proof valve (2)
Have end cap (3), the spool (5) is connected by spring (11) with end cap (3), is provided with exhaust in the explosion-proof valve (2)
Channel (10), the both ends of the exhaust passage (10) are connected with gas vent (4) respectively, at the center of the end cap (3)
Offer through-hole (9).
2. a kind of power battery explosion protection structure according to claim 1, it is characterised in that: the upper end of the connecting hole is set
There is the counterbore for being formed together sealing structure with the shaft shoulder of the explosion-proof valve (2), is provided with sealing ring (12) in the counterbore.
3. a kind of power battery explosion protection structure according to claim 1, it is characterised in that: the bottom of the cover board (1)
It is provided with retaining ring pallet (14), the periphery of the explosion-proof valve (2) lower end offers circlip groove, in the circlip groove, the lid
Flexible retaining ring (13) are equipped between plate (1) bottom and retaining ring pallet (14).
4. a kind of power battery explosion protection structure according to claim 1, it is characterised in that: opened up in the spool (5)
Have spare gas vent (6), the spare gas vent (6) is welded with rupture pressure disc (7).
5. a kind of power battery explosion protection structure according to claim 4, it is characterised in that: set on the rupture pressure disc (7)
There are explosion indentation (8).
6. a kind of power battery explosion protection structure according to claim 1, it is characterised in that: the bottom of the end cap (3)
Threaded hole is offered, external connection screw, the upper end of the explosion-proof valve (2) are provided on the outer wall of the explosion-proof valve (2) upper end
It is connected to by external connection screw in the threaded hole of end cap (3) bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811514230.4A CN109585748A (en) | 2018-12-11 | 2018-12-11 | A kind of power battery explosion protection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811514230.4A CN109585748A (en) | 2018-12-11 | 2018-12-11 | A kind of power battery explosion protection structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109585748A true CN109585748A (en) | 2019-04-05 |
Family
ID=65928268
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811514230.4A Pending CN109585748A (en) | 2018-12-11 | 2018-12-11 | A kind of power battery explosion protection structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109585748A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL2023100B1 (en) * | 2019-05-09 | 2020-11-30 | Mgenergy Systems B V | Battery with thermal propagation safety system and method for preventing thermal propagation |
| CN112103449A (en) * | 2020-11-17 | 2020-12-18 | 南京网安视智能系统有限公司 | Storage battery shell |
| CN112310519A (en) * | 2019-07-25 | 2021-02-02 | 比亚迪股份有限公司 | Battery tray, power battery package and vehicle |
-
2018
- 2018-12-11 CN CN201811514230.4A patent/CN109585748A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL2023100B1 (en) * | 2019-05-09 | 2020-11-30 | Mgenergy Systems B V | Battery with thermal propagation safety system and method for preventing thermal propagation |
| CN112310519A (en) * | 2019-07-25 | 2021-02-02 | 比亚迪股份有限公司 | Battery tray, power battery package and vehicle |
| CN112310519B (en) * | 2019-07-25 | 2022-05-13 | 比亚迪股份有限公司 | Battery tray, power battery package and vehicle |
| CN112103449A (en) * | 2020-11-17 | 2020-12-18 | 南京网安视智能系统有限公司 | Storage battery shell |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102136552B (en) | The manufacture method of battery protecting apparatus, battery and battery protecting apparatus | |
| CN109585748A (en) | A kind of power battery explosion protection structure | |
| KR102191717B1 (en) | Safe and high energy USB rechargeable battery | |
| CN112531254B (en) | Explosion-proof method for mining lithium battery | |
| CN101847756A (en) | Girdled and sealed lithium ion battery with lead-out anode and cathode along same direction in cylindrical aluminum shell | |
| WO2023142648A1 (en) | Explosion-proof valve patch for battery, end cover assembly, battery, and electric device | |
| CN106972121A (en) | A kind of dynamic lithium battery safety anti-explosive cover plate | |
| CN108417757A (en) | A kind of safety-type lithium battery and preparation method thereof | |
| CN105896479A (en) | Built-in constant-voltage protection structural member and rechargeable battery using same | |
| CN207097909U (en) | A kind of battery bag | |
| CN107768777B (en) | Metal air battery with air pressure regulating system | |
| CN102142531A (en) | Battery, battery protection device and manufacture method thereof | |
| CN215008493U (en) | Battery top cover structure for preventing battery thermal runaway and battery | |
| CN212161953U (en) | Cylindrical lithium ion battery steel shell with explosion-proof valve structure | |
| CN105679990B (en) | A kind of battery | |
| CN202749426U (en) | Aluminum soldering integration type-cylinder aluminum shell battery anti-explosion combination cover plate | |
| CN109244310A (en) | It is a kind of can both ends explosion battery | |
| CN202749424U (en) | Rotation prevention type cylindrical aluminum case battery anti-explosion combined cover plate | |
| CN205542403U (en) | Explosion -proof formula condenser that connects soon | |
| CN201804935U (en) | Battery safety valve | |
| CN205508891U (en) | Battery and battery block structure thereof | |
| CN209747616U (en) | Explosion-proof structure of power battery | |
| CN209607776U (en) | The cap assembly and secondary cell of secondary cell | |
| CN107959046A (en) | A kind of power battery | |
| CN207967059U (en) | A kind of high security aluminium casing lithium ion power battery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190405 |
|
| WD01 | Invention patent application deemed withdrawn after publication |