CN202651812U - Lithium battery charging power supply with overvoltage protection - Google Patents
Lithium battery charging power supply with overvoltage protection Download PDFInfo
- Publication number
- CN202651812U CN202651812U CN 201220156485 CN201220156485U CN202651812U CN 202651812 U CN202651812 U CN 202651812U CN 201220156485 CN201220156485 CN 201220156485 CN 201220156485 U CN201220156485 U CN 201220156485U CN 202651812 U CN202651812 U CN 202651812U
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- China
- Prior art keywords
- lithium battery
- charging
- overvoltage protection
- power supply
- valve block
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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 - Fee Related
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
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Abstract
The utility model discloses a lithium battery charging power supply with overvoltage protection. The lithium battery charging power supply comprises a power supply terminal, a charging part, a controller and an overvoltage protection unit. The charging part has multiple charging grooves, in which lithium batteries are placed so as to be charged. The multiple charging grooves are connected in parallel. The overvoltage protection unit comprises a valve block group and an insulating housing. The upper end of the insulating housing is equipped with a connecting terminal and an electrode. A quartz sand layer is arranged between the insulating housing and the valve block group. In addition, the insulating housing is provided with a through hole, in which a heat absorption pipe is arranged. With a simple structure, the lithium battery charging power supply provides stable voltage to the lithium batteries and provides individual current to each lithium battery, increasing circuit protection and prolonging the service lifetime of the lithium batteries. The lithium battery charging power supply can be applied in a portable computer, a portable multimedia player, a cell phone, a lithium battery charger or other electric appliances.
Description
Technical field
The utility model relates to the charge power supply of rechargeable lithium batteries, particularly each lithium battery is provided the lithium cell charging power supply with overvoltage protection of separate current.
Background technology
Now, lithium battery is because lightweight, the good low price of conductivity and little with impact to the harm of environment, obtained good development, occupy center of gravity at battery industry, under charged state, if the charging voltage of lithium battery repeats to surpass the state more than 4.3 volts, have smolder, the danger of on fire even blast.Be lower than such as the voltage of lithium battery under 2.0 volts the state and place for a long time, then lithium battery can't re-use or charge.Overcharge or when discharging (use) accident even blast that life-span that may the contracting lithium battery or occur can not expect.The charging modes of perfect condition, with a charger 3 lithium batteries that are connected in series to be charged, charger is set for rechargeable lithium batteries is charged, after making each cell voltage become 4.2 volts, stop charging, when actual charging modes, charger charge to lithium battery, the target of charging is for the voltage that makes 3 rechargeable lithium batteries becomes 4.2 volts equally, so the essence voltage of charger is the l2.6 volt.Yet, because the individual characteristic difference of lithium battery, and environment for use difference etc. and when other battery of voltage ratio of lithium battery is risen sooner, lithium battery can be overcharged, and other battery then is in the state of underfill electricity, so, when repeating to overcharge, lithium battery can be separated out the lithium metal, and become smolder, on fire in addition the blast reason, therefore, there is defective in prior art, needs to improve.
Implementation content
[0003]The technical problems to be solved in the utility model is for overcoming weak point of the prior art; provide a kind of simple in structure, provide burning voltage for lithium battery; provide independently electric current to each lithium battery, increase circuit protection, prolong the lithium battery lithium cell charging power supply with overvoltage protection in useful life.
For solving technical problem of the present utility model, the technical scheme that adopts is: a kind of lithium cell charging power supply with overvoltage protection, comprise a power source supply end, charging part, controller, overvoltage protection, be connected by described overvoltage protection between described power source supply end and the described charging part, described charging part is provided with a plurality of charging slots, lithium battery is positioned in the described charging slot and charges, described a plurality of charging slot is connected in parallel, after arbitrary lithium battery was saturated, the controller that is connected with charging part disconnected the circuit of this charging slot; Described overvoltage protection comprises valve block group, insulation crust, described valve block group is fixed in the insulation crust, described insulation crust upper end is provided with a binding post, described binding post passes insulation crust and is connected with the valve block group, the lower end of described insulation crust arranges an electrode, is connected with the valve block group, is provided with quartz sand layer between described insulation crust and the valve block group, also be provided with through hole on the described insulation crust, in through hole, be provided with endothermic tube;
Be provided with transformer between described charging part and the described power source supply end, constant charge section is lithium cell charging voltage, reduces the damage to lithium battery;
Described charging part is provided with current detector, after the lithium battery in detecting arbitrary charging slot is saturated, transmits signal to controller, and described controller disconnects the circuit of this charging slot at once;
Described insulation crust is that the silicon rubber material is made;
Described endothermic tube is that one of iron, aluminium, copper, ferroalloy, aluminium alloy, copper alloy, iron multiple tube, the above material of aluminium composite pipe are made.
Beneficial effect with respect to prior art is, by overvoltage protection is set on the circuit, protection charging circuit road safety has reduced potential safety hazard, the performance of the insulation crust anti-vibration of overvoltage protection has also obtained great raising, and the effect of sealing is also better; Adopt zinc oxide valve plate, both reduced the temperature rise of valve block under same energy, reduced again the expansion rate of valve block, also increased the endergonic ability of protector, quartz sand layer is set makes the valve block group not have the existence of air on every side, stopped the air expanded by heating may with cut off the passage that the protector valve block makes moist, thereby the rate of failure of overvoltage protection device is reduced greatly; Insulation crust is provided with louvre, is conducive to timely heat conduction; The charging slot of each lithium battery is connected in parallel, the phase mutual is electric current independently, avoid property difference, and the environment for use difference etc. and when other battery of voltage ratio of lithium battery is risen sooner of each lithium battery, lithium battery can be overcharged, to a certain extent, increased the useful life of battery, good economic benefit has been arranged.
Description of drawings
Fig. 1 is basic boom schematic diagram of the present utility model.
Embodiment
Below in conjunction with accompanying drawing optimal way of the present utility model is described in further detail.
As shown in Figure 1; the apparatus structure of this lithium cell charging power supply is simple, provide burning voltage for lithium battery; provide independently electric current to each lithium battery; increase circuit protection, prolong lithium battery useful life, can use at hand-held computer, portable multimedia playing apparatus, mobile phone or lithium battery charger etc.This has the lithium cell charging power supply of overvoltage protection, comprise a power source supply end 3, charging part 11, controller 2, overvoltage protection 5, be connected by described overvoltage protection 5 between described power source supply end 3 and the described charging part 11, described charging part 11 is provided with a plurality of charging slots 14, lithium battery 13 is positioned in the described charging slot 14 and charges, for example employed charging part 11 is provided with four charging slots 14, these four charging slots, 14 connections parallel with one another, each charging slot 14 has separately independently current channel, avoid the property difference of each lithium battery, and environment for use difference etc. and when other battery of voltage ratio of lithium battery is risen sooner, lithium battery can be overcharged, to a certain extent, increased the useful life of battery, described charging part 11 is provided with current detector 12, after lithium battery 13 in detecting arbitrary charging slot 14 is saturated, transmit signal to controller, the circuit of described controller 2 corresponding each charging slots is provided with disconnect 1, controller 2 disconnects by the circuit of disconnect 1 with this charging slot 14 after receiving signal at once, at controller 2 master switch is set, so that when meeting emergencies, the immediately operation of arresting stop;
Be provided with transformer 9 between described charging part 11 and the described power source supply end 3, constant charge section is lithium cell charging voltage, reduces the damage to lithium battery;
The overvoltage protection 5 that is connected between power source supply end 3 and the charging part 11 comprises valve block group 7, insulation crust, described valve block group 7 is fixed in the insulation crust of being made by the silicon rubber material, described insulation crust upper end is provided with a binding post 4, described binding post 4 passes insulation crust and is connected with valve block group 7, the lower end of described insulation crust arranges an electrode 8, be connected with valve block group 7, for the integral die of realizing valve block provides favourable basis, also make protector can be used on the larger place of overvoltage energy; Be provided with quartz sand layer 6 between described insulation crust and the valve block group, also be provided with through hole on the described insulation crust, in through hole, be provided with endothermic tube; Described endothermic tube is that one of iron, aluminium, copper, ferroalloy, aluminium alloy, copper alloy, iron multiple tube, the above material of aluminium composite pipe are made.
Obviously, those skilled in the art can carry out various changes and modification to the utility model and not break away from spirit and scope of the present utility model.Like this, if of the present utility model these are revised and modification belongs within the scope of the utility model claim and equivalent technologies thereof, then the utility model also is intended to comprise these changes and modification interior.
Claims (3)
1. lithium cell charging power supply with overvoltage protection; it is characterized in that: comprise a power source supply end; charging part; controller; overvoltage protection; be connected by described overvoltage protection between described power source supply end and the described charging part; described controller is connected in described charging part; described charging part is provided with a plurality of charging slots; lithium battery is positioned in the described charging slot and charges; described a plurality of charging slot is connected in parallel; described overvoltage protection comprises the valve block group; insulation crust; described valve block group is fixed in the insulation crust; described insulation crust upper end is provided with a binding post; described binding post passes insulation crust and is connected with the valve block group; the lower end of described insulation crust arranges an electrode; be connected with the valve block group; be provided with quartz sand layer between described insulation crust and the valve block group, also be provided with through hole on the described insulation crust, in through hole, be provided with endothermic tube.
2. described lithium cell charging power supply with overvoltage protection according to claim 1 is characterized in that: be provided with transformer between described charging part and the described power source supply end.
3. described lithium cell charging power supply with overvoltage protection according to claim 1, it is characterized in that: described charging part is provided with current detector, and described current detector is connected in charging circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220156485 CN202651812U (en) | 2012-04-14 | 2012-04-14 | Lithium battery charging power supply with overvoltage protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220156485 CN202651812U (en) | 2012-04-14 | 2012-04-14 | Lithium battery charging power supply with overvoltage protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202651812U true CN202651812U (en) | 2013-01-02 |
Family
ID=47420856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220156485 Expired - Fee Related CN202651812U (en) | 2012-04-14 | 2012-04-14 | Lithium battery charging power supply with overvoltage protection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202651812U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104157922A (en) * | 2014-08-29 | 2014-11-19 | 合肥国轩高科动力能源股份公司 | Aluminum casing type lithium-ion power battery |
-
2012
- 2012-04-14 CN CN 201220156485 patent/CN202651812U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104157922A (en) * | 2014-08-29 | 2014-11-19 | 合肥国轩高科动力能源股份公司 | Aluminum casing type lithium-ion power battery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130102 Termination date: 20130414 |