CN2521763Y - Safety valve for sealing anhydrous electrolytic battery - Google Patents
Safety valve for sealing anhydrous electrolytic battery Download PDFInfo
- Publication number
- CN2521763Y CN2521763Y CN 02203539 CN02203539U CN2521763Y CN 2521763 Y CN2521763 Y CN 2521763Y CN 02203539 CN02203539 CN 02203539 CN 02203539 U CN02203539 U CN 02203539U CN 2521763 Y CN2521763 Y CN 2521763Y
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- CN
- China
- Prior art keywords
- pole
- explosion
- battery
- battery case
- gasket
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- 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.)
- Expired - Lifetime
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- Connection Of Batteries Or Terminals (AREA)
Abstract
The utility model relates to a relief valve used to seal a waterless electrolyte battery, and comprises an electrode and an electrode lug. The electrode goes out from a hole made at the top of a battery shell and is arranged on the battery shell. The utility model also comprises a polar anti-explosion projecting gasket, a polar sealing and insulating gasket, a fixing gasket, and a fixing nut. The electrode is a pole, the exterior wall of the upper section of which is provided with screws and the bottom of which is provided with a hat brim. The electrode lug is fixed under the hat brim. The polar anti-explosion projecting gasket is embedded in the hole of the battery case, and the hat brim is locked below the polar anti-explosion projecting gasket. The upper section of the pole goes through the polar anti-explosion projecting gasket and is exposed outside the hole of the battery shell; the sealing and insulating gasket and the fixing gasket are fit into the upper section of the pole in sequence and are fixed on the top of the battery shell with the nut. As the sealing and insulating gasket and the fixing gasket are arranged in the hole of the pole and the battery shell, and in particular a polar anti-explosion projecting gasket is embedded in the hole, or the anti-explosion is arranged below the electrode lug, the polar anti-explosion projecting gasket falls off, the electrode lug is broken off and the electric current is interrupted when the internal pressure of the battery is too large.
Description
Technical field
The utility model relates to a kind of sealed secondary battery, particularly relates to a kind of safety valve that is used in the bigger sealed secondary battery of the last monomer capacity that uses such as electric bicycle, battery-operated motor cycle, uninterrupted power supply.
Background technology
Secondary cell is used widely on electric bicycle, battery-operated motor cycle, uninterrupted power supply etc. as lead-acid battery, Ni-MH battery and lithium ion battery.Described secondary cell is a kind of cells with non-aqueous electrolyte, and when this battery overcharge, overtension causes electrolyte to decompose and produces gas.If this situation constantly continues, electrolyte and active material will decompose rapidly, and the temperature of battery also rises thereupon, because of battery seals, the internal pressure of battery case that battery is put increases sharply, and security incident such as can set off an explosion when acquiring a certain degree, on fire.People are in order to prevent blast, contingency such as on fire, and on some secondary cell, the secondary cell that for example is used for mobile phone generally takes to be provided with explosion-proof valve, and battery pressure release when internal pressure acquires a certain degree is promptly made weak link on the battery shell wall.Electrolyte decomposition finishes, and cell reaction is ended, security incident such as can not blast, on fire.But bigger as the cell capacity, battery as continuing charging, will produce a large amount of gases after overcharging and causing the gas ejection, and the temperature of battery will continue to raise, until blast or on fire.Therefore, when over-charging of battery arrived to a certain degree, interrupting charging was measures necessary.
Summary of the invention
The purpose of this utility model is: in order to overcome general battery easily causes battery explosion and burning when overcharging shortcoming; In order to improve battery under the situation of operate as normal, vibration resistance and sealing; Thereby provide a kind of safety valve that is used to seal waterless electrolyte battery.
A kind of safety valve that is used to seal waterless electrolyte battery that the utility model provides comprises: electrode, lug; Described electrode passes from the hole that the battery case shell backs down, and is installed on the battery case; It is characterized in that: also comprise the explosion-proof protruding pad of a post pole, post pole sealed insulation packing ring, setting-up piece and a fixing nut of using; Wherein said electrode has screw thread by an external wall of upper portion car, and the pole of a brim of a hat is arranged at the bottom; Fix a lug below this pole the brim of a hat; The explosion-proof protruding pad of pole is embedded in the battery case perforate, and the brim of a hat of pole is stuck in below the explosion-proof protruding pad of post pole; Threaded section passes the explosion-proof protruding pad of pole and is exposed at outside the battery case perforate on the pole, and its pole top is overlapped an electrode column sealing insulating washer, a retaining washer in order and is fixed on the battery case top with a hold-down nut.
In order to strengthen the battery anti-explosion fail safe, also comprise the explosion-proof pad of sealing of a semicircular in shape, this explosion-proof cushion cover is in the junction of the lug and the pole the brim of a hat.
In order to guarantee vibration resistance and sealing, also comprise a spring shim, this spring shim is installed between hold-down nut and the retaining washer.
The base diameter of the explosion-proof protruding pad of a described pole is greater than the aperture of battery case perforate, and the ledge diameter is slightly less than the aperture in battery case hole, so preferably fixedly pole and enhanced leaktightness.
When secondary cell in charging process, in case battery overcharge, when inner pressure of battery was elevated to a certain degree, the explosion-proof protruding pad of a pole skidded off from battery case of living in hole, inner pressure of battery discharges, lug fracture simultaneously, interruptive current, thereby reach explosion-proof purpose.
The utility model effect: owing to sealed insulation packing ring, retaining washer have been installed and are fixed with a hold-down nut at the tapping of pole and battery case, therefore, under the situation of operate as normal, ability and sealing property that battery bears vibration are improved.Particularly in the battery case perforate, inlay the explosion-proof protruding pad of a pole is installed, or can also under the explosion-proof protruding pad of this pole, be with the explosion-proof cushion cover of a semicircular in shape, like this when cell internal pressure rises to a certain degree, interior pressure can be released battery case, current interruptions, battery is not blasted and is burnt, and guarantees that battery is safe in utilization.
Description of drawings Fig. 1 is that partial sectional view Fig. 2 of a sealed cell raises when pressure, when electrode was deviate from, partial sectional view Fig. 3 that lug is broken was that partial sectional view Fig. 4 of the battery of embodiment 1 with a safety valve electrode is that partial sectional view Fig. 5 that embodiment 2 has two safety valve electrodes is embodiment 3 partial sectional views (cylindrical battery)
The drawing explanation
1-pole 2-nut 3-spring shim
4-setting-up piece 5-electrode column sealing insulating washer 6-battery case
The explosion-proof pad 9-lug of the explosion-proof protruding pad 8-sealing of 7-pole
10-negative terminal 11-screw 12-positive plate,
13-barrier film 14-negative plate
Embodiment
Embodiment 1
Below in conjunction with Fig. 1 a kind of square secondary cell that contains a safety valve electrode according to the utility model manufacturing is described.
The maximum outside diameter that the positive terminal 1 usefulness stainless steel of present embodiment is made is 8mm, and screw thread is arranged on it; Battery case 6 tops have a hole, and its aperture is 11mm.Explosion-proof protruding pad 7 base diameters of pole are 13mm, the ledge external diameter is 10.9mm, its base diameter is greater than the aperture in pole battery case of living in hole, the ledge diameter is slightly less than the aperture in pole battery case of living in 6 holes, ledge cooperates with aperture on the battery case 6, and ledge is embedded in battery case 6 holes; The external diameter of electrode column sealing insulating washer 5 is 13mm, and internal diameter cooperates with the ledge of the explosion-proof protruding pad 7 of pole, can play fixedly pole and enhanced leaktightness effect.The explosion-proof packing ring 7 of pole is passed on positive terminal 1 top, is exposed at outside described battery case 6 perforates, and overlaps a sealed insulation packing ring 5, a setting-up piece 4 on pole 1 top in order and screw togather fixing with a hold-down nut 2 and screw thread on pole 1 outer wall.Welding of lug 9 usefulness or riveted way are connected under the brim of a hat of pole 1.The soft elastomeric material of explosion-proof pad 8 usefulness of the sealing of semicircular in shape is made, and is enclosed within the junction of the lug and the pole the brim of a hat.
That present embodiment 1 is done is safe, sealing and vibration experiment, and its experimental data is shown in subordinate list 1,2,3; In charging process, when inner pressure of battery was elevated to a certain degree, the explosion-proof protruding pad 7 of pole skidded off from battery case of living in 6 holes, and inner pressure of battery discharges, lug 9 fractures simultaneously, interruptive current.When battery overcharge, pressure raises as shown in Figure 2, and pole 1 sensing by arrow under the effect of battery case internal high pressure moves upward, and the explosion-proof protruding pad 7 of pole produces distortion under the effect of pole 1, and at this moment lug 9 ruptures under the effect of pole 1.
Present embodiment has been done safety, sealing and vibration experiment, and its experimental data is shown in table 1,2,3.
Make a cylindrical battery by Fig. 4, wherein the maximum outside diameter of pole 1 is 8mm, and screw thread is arranged on it, the hole that to have an aperture on battery case 6 tops be 11mm; Explosion-proof protruding pad 7 base diameters of pole are 13mm, the ledge external diameter is 10.9mm, its base diameter is greater than the aperture in pole battery case of living in hole, the ledge diameter is slightly less than the aperture in pole battery case of living in 6 holes, cooperate with aperture on the battery case 6 to be embedded in the battery case hole, fixedly pole and enhanced leaktightness; Lug 9 and pole connected mode, sealing lug 8 and lug 9 connected modes are with embodiment 1.An electrode column sealing insulating washer 5, its diameter is greater than the aperture in pole 1 battery case of living in 6 holes, fixedly pole and enhanced leaktightness; Screw thread on nut and pole 1 are outer screws togather, and is used for fixing electrode column; Setting-up piece 4 and a spring shim 3 diameters place between sealed insulation packing ring and the nut greater than the aperture in pole 1 battery case of living in hole, are used for fixing electrode column; Pole ledge diameter is less than the aperture in its battery case of living in hole; In the charging process, when inner pressure of battery was elevated to a certain degree, explosion-proof protruding pad skidded off from battery case of living in hole, and inner pressure of battery discharges, lug fracture simultaneously, interruptive current.
Present embodiment has been done safety, sealing and vibration experiment, and its experimental data is shown in table 1,2,3.
Preferred embodiment of the utility model has been described above in conjunction with the accompanying drawings.But, should be clear and definite, the utility model is not limited to the foregoing description, and the person skilled in art can make various modifications and replacement under the situation that does not depart from the spirit or scope that the every claim of the utility model application defines.Table 1: safety experiment
| Sequence number | Battery voltage value when pole is deviate from (V) | ||||
| 1 | 2 | 3 | 4 | 5 | |
| Example 1 | 5.10 | 5.21 | 5.07 | 5.25 | 5.32 |
| Example 2 | 5.12 | 5.23 | 5.34 | 5.05 | 5.18 |
| Example 3 | 5.13 | 5.09 | 5.05 | 5.22 | 5.00 |
Table 2: sealing experiment
Table 3: vibration experiment experimental condition: amplitude 0.8mm, frequency 50 ± 5Hz
| Sequence number | Weight (g) before dry | Dry back weight (g) | Remarks | |
| Example 1 | 1 | 285.6 | 285.5 | Drying condition: 55 ℃ vacuumized 48 hours; Tester: electronic balance scope 0～2kg, precision 0.1g.Inference: remove outside battery surface moisture, accuracy of instrument and the environmental impact, experimental technique according to this, air-tightness is better. |
| 2 | 284.7 | 284.6 | ||
| 3 | 286.4 | 286.3 | ||
| 4 | 283.8 | 283.7 | ||
| 5 | 285.4 | 285.3 | ||
| Example 2 | 1 | 280.4 | 280.3 | |
| 2 | 281.3 | 281.2 | ||
| 3 | 280.9 | 280.8 | ||
| 4 | 279.3 | 279.1 | ||
| 5 | 278.9 | 278.8 | ||
| Example 3 | 1 | 232.0 | 231.9 | |
| 2 | 231.5 | 231.4 | ||
| 3 | 232.6 | 232.5 | ||
| 4 | 234.1 | 234.0 | ||
| 5 | 230.9 | 230.8 | ||
| Sample | 1 | 2 | 3 | 4 | 5 | |
| Example 1 | Test duration | 90 | 93 | 94 | 95 | 97 |
| Functional test | Qualified | Qualified | Qualified | Qualified | Qualified | |
| Example 2 | Test duration | 91 | 93 | 94 | 92 | 91 |
| Functional test | Qualified | Qualified | Qualified | Qualified | Qualified | |
| Example 3 | Test duration | 90 | 93 | 97 | 94 | 96 |
| Functional test | Qualified | Qualified | Qualified | Qualified | Qualified | |
Claims (4)
1. a safety valve that is used to seal waterless electrolyte battery comprises: electrode, lug; Described electrode passes from the hole that the battery case shell backs down, and is installed on the battery case; It is characterized in that: also comprise the explosion-proof protruding pad of a post pole, post pole sealed insulation packing ring, setting-up piece and a fixing nut of using; Wherein said electrode is that an external wall of upper portion car has screw thread, and the pole of a brim of a hat is arranged at the bottom; Fix a lug below this pole the brim of a hat; The explosion-proof protruding pad of pole is embedded in the battery case perforate, and the brim of a hat of pole is stuck in below the explosion-proof protruding pad of post pole; Threaded section passes the explosion-proof protruding pad of pole and is exposed at outside the battery case perforate on the pole, and its pole top is overlapped an electrode column sealing insulating washer, a retaining washer in order and is fixed on the battery case top with a hold-down nut.
2. by the described safety valve that is used to seal waterless electrolyte battery of claim 1, it is characterized in that: also comprise the explosion-proof pad of a semicircular in shape, this explosion-proof cushion cover is in the junction of the lug and the pole the brim of a hat.
3. be used to seal the safety valve of waterless electrolyte battery by claim 1 or 2 described each, it is characterized in that: also comprise a spring shim, this spring shim is installed between hold-down nut and the retaining washer.
4. by the described safety valve that is used to seal waterless electrolyte battery of claim 1, it is characterized in that:
The base diameter of the explosion-proof protruding pad of described pole is greater than the aperture of battery case perforate, and the ledge diameter is slightly less than the aperture in battery case hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02203539 CN2521763Y (en) | 2002-02-10 | 2002-02-10 | Safety valve for sealing anhydrous electrolytic battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02203539 CN2521763Y (en) | 2002-02-10 | 2002-02-10 | Safety valve for sealing anhydrous electrolytic battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2521763Y true CN2521763Y (en) | 2002-11-20 |
Family
ID=33685685
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02203539 Expired - Lifetime CN2521763Y (en) | 2002-02-10 | 2002-02-10 | Safety valve for sealing anhydrous electrolytic battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2521763Y (en) |
-
2002
- 2002-02-10 CN CN 02203539 patent/CN2521763Y/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SUZHOU XINGHENG POWER SUPPLY CO., LTD. Free format text: FORMER OWNER: BEIJING XINGHENG ELECTRIC SOURCE CO., LTD. Effective date: 20040528 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20040528 Address after: 215011 No. 81 Xiangyang Road, Jiangsu, Suzhou Patentee after: Suzhou Phylion Battery Co., Ltd. Address before: 100080, Beijing, Haidian District Road, No. 8, building B, Hong letter building Patentee before: Beijing Xingheng Power Supply Co., Ltd. |
|
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20051123 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |