CN201032686Y - Overvoltage protection device for battery charger - Google Patents
Overvoltage protection device for battery charger Download PDFInfo
- Publication number
- CN201032686Y CN201032686Y CNU2006200155588U CN200620015558U CN201032686Y CN 201032686 Y CN201032686 Y CN 201032686Y CN U2006200155588 U CNU2006200155588 U CN U2006200155588U CN 200620015558 U CN200620015558 U CN 200620015558U CN 201032686 Y CN201032686 Y CN 201032686Y
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- Prior art keywords
- fuse
- over
- battery
- circuit
- detection circuit
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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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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
本实用新型公开了一种用于电池充电器的过压保护装置，包括：保险丝和过压检测电路，所述保险丝串接在充电回路中的充电开关管控制极的控制电路上，使其当保险丝烧断时充电开关管工作在永久性关断状态；所述过压检测电路与保险丝并接，用于检测电池正极接线端和电池负极接线端之间的电压，当过压时烧断保险丝；过压检测电路通过吸入电流或输出电流的方式烧断保险丝。采用本实用新型的保护装置，当过压时，使充电回路被永久性断开，充电开关管不再受充电控制电路的控制，避免了电池过压时继续充电损坏电池，可以有效保护电池。
The utility model discloses an overvoltage protection device for a battery charger, comprising: a fuse and an overvoltage detection circuit, the fuse is connected in series with the control circuit of the control pole of the charging switch tube in the charging circuit, so that it can be used as When the fuse is blown, the charging switch tube works in a permanent off state; the overvoltage detection circuit is connected in parallel with the fuse to detect the voltage between the positive terminal of the battery and the negative terminal of the battery, and the fuse is blown when the overvoltage occurs ;The overvoltage detection circuit blows the fuse by sinking current or outputting current. With the protection device of the utility model, when the overvoltage occurs, the charging circuit is permanently disconnected, and the charging switch tube is no longer controlled by the charging control circuit, so that the battery is prevented from being damaged by continuous charging when the battery is overvoltage, and the battery can be effectively protected.
Description
Technical field
The utility model relates to a kind of over-pressure safety device that is used for battery charger, especially relates to a kind of when the device, the particularly overvoltage protection of lead-acid battery charger protected during overvoltage between anode terminals and the battery cathode terminals.
Background technology
Existing common charger generally all is constant voltage, the charging of floating charge pattern.Because this charger ubiquity is difficult to eliminate the shortcoming of memory effect, pulse type charger can be good at overcoming the shortcoming of memory benefit.
Pulse type charger is carrying out pulse charging to battery, in when charging, charges normal earlier, discharges and recharges and replenishes battery power gradually when battery begins pulsed when saturated.This charging modes generally adopts the break-make work of the switching tube in the pulse current charge control circuit control charge circuit to realize pulse charging.
But existing charger circuit is considerably less for the design of over-voltage protecting function, the design circuit complexity that has, and cost is higher, and is not suitable for the use of charge circuit.In the time of can't being implemented in the battery overvoltage, permanent on-off switching tube.
Summary of the invention
The utility model overcomes above-mentioned the deficiencies in the prior art, propose a kind of can be when the battery overvoltage control device of permanent disconnection charge circuit.
A kind of over-pressure safety device that is used for battery charger, comprise: fuse F1 and over-voltage detection circuit M1, fuse F1 is serially connected on the control circuit of the charge switch pipe Q1 control utmost point in the charge circuit, and charge switch pipe Q1 is operated in permanent off state when making it work as fuse F1 and blow; Over-voltage detection circuit M1 and fuse F1 also connect, and are used to detect the voltage between anode terminals and the battery cathode terminals, blowout F1 when overvoltage.
Preferably, when fuse F1 one end ground connection and over-voltage detection circuit M1 detected overvoltage, over-voltage detection circuit M1 was blown fuse F1 by exporting big electric current.
Preferably, when fuse F1 one termination power end and over-voltage detection circuit M1 detected overvoltage, over-voltage detection circuit M1 formed shorted to earth fuse F1 is blown by sucking electric current.
Preferably, over-voltage detection circuit M1 is discrete device or IC.
Adopt technique scheme, the utility model beneficial technical effects is:
1. by on the control circuit that fuse F1 is serially connected in the charge switch pipe Q1 control utmost point in the charge circuit, charge switch pipe Q1 is operated in permanent off state when fuse F1 blows, thereby makes charge circuit by permanent disconnection.Charge switch pipe Q1 no longer is subjected to the control of charging control circuit, continues charging when having avoided the battery overvoltage and damages battery.
2. owing to adopt fuse and over-voltage detection circuit, device cost reduces greatly.
3. over-voltage detection circuit can be by sucking the mode blowout F1 of electric current or output current, be adapted to pass through the charge circuit of the positive pole of charge switch pipe Q1 control charging circuit, also be adapted to pass through the charge circuit on the ground of charge switch pipe Q1 control charging circuit.
Description of drawings
Fig. 1 is the charger circuit schematic diagram that adopts output current mode over-pressure safety device of the present invention;
Fig. 2 adopts the present invention to suck the charger circuit schematic diagram of current system over-pressure safety device.
Embodiment
Also in conjunction with the accompanying drawings the utility model is further described below by embodiment.
Be illustrated in figure 1 as charger circuit by the positive pole of charge switch pipe Q1 control charging circuit.Switching Power Supply, transformer T1, diode D1 and capacitor C 1 have constituted the charge power supply output of battery.At charge circuit, resistance R 1, R2 are attempted by the two ends of charge power supply, the break-make of charging control circuit M2 control charge switch pipe Q1.Fuse F1 one end ground connection, over-voltage detection circuit M1 and fuse F1 also connect.Over-voltage detection circuit M1 detects the voltage between battery B1 positive terminal and the battery B1 negative terminals, and when detecting overvoltage, over-voltage detection circuit M1 is blown fuse F1 by exporting big electric current.Charge switch pipe Q1 can select P raceway groove insulating gate type field effect tube or positive-negative-positive triode.
Be illustrated in figure 2 as charger circuit by the ground of charge switch pipe Q1 control charging circuit.Switching Power Supply, transformer T1, diode D1 and capacitor C 1 have constituted the charge power supply output of battery.At charge circuit, resistance R 1, R2 are attempted by between power end and the ground.Charging control circuit M2 is by the break-make of optocoupler O1 control charge switch pipe Q1, and the driving voltage of charge switch pipe Q1 is by resistance R 1, the decision of R2 dividing potential drop.Fuse F1 one termination power end, over-voltage detection circuit M1 and fuse F1 also connect.Over-voltage detection circuit M1 detects the voltage between battery B1 positive terminal and the battery B1 negative terminals, and when detecting overvoltage, over-voltage detection circuit M1 forms shorted to earth fuse F1 is blown by sucking big electric current.Charge switch pipe Q1 can select N raceway groove insulating gate type field effect tube or NPN type triode.
It more than is the application example of pulse type charger, also be suitable for for the common batteries charger, as long as fuse F1 of the present utility model is serially connected in on-off switching tube in the time of to realize overvoltage on the control circuit of the charge switch pipe Q1 control utmost point, charge circuit is disconnected.For the expensive battery of prices such as lead-acid battery, the utility model has the good actual application meaning.
Must be pointed out that the indefiniteness that the foregoing description is only made the utility model illustrates.But person of skill in the art will appreciate that, do not departing under aim of the present utility model and the scope that can make various modifications, replacement and change to the utility model, these modifications, replacement and change still belong to protection range of the present utility model.
Claims (4)
1. over-pressure safety device that is used for battery charger, it is characterized in that, described over-pressure safety device comprises: fuse (F1) and over-voltage detection circuit (M1), described fuse (F1) is serially connected on the control circuit of charge switch pipe (Q1) the control utmost point in the charge circuit, make its work as fuse (F1) when blowing charge switch pipe (Q1) be operated in permanent off state; Described over-voltage detection circuit (M1) and fuse (F1) also connect, and are used to detect the voltage between anode terminals and the battery cathode terminals, blowout when overvoltage (F1).
2. the over-pressure safety device that is used for battery charger according to claim 1; it is characterized in that; when being used to detect electric voltage over press between anode terminals and the battery cathode terminals, described fuse (F1) end ground connection, described over-voltage detection circuit (M1) exports big electric current blowout (F1).
3. the over-pressure safety device that is used for battery charger according to claim 1; it is characterized in that; described fuse (F1) termination power end; suck electric current when described over-voltage detection circuit (M1) is used to detect electric voltage over press between anode terminals and the battery cathode terminals, make fuse (F1) form shorted to earth and be blown.
4. according to the arbitrary described over-pressure safety device that is used for battery charger of claim 1 to 3, it is characterized in that described over-voltage detection circuit (M1) is discrete device or IC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200155588U CN201032686Y (en) | 2006-11-01 | 2006-11-01 | Overvoltage protection device for battery charger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200155588U CN201032686Y (en) | 2006-11-01 | 2006-11-01 | Overvoltage protection device for battery charger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201032686Y true CN201032686Y (en) | 2008-03-05 |
Family
ID=39164573
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006200155588U Expired - Fee Related CN201032686Y (en) | 2006-11-01 | 2006-11-01 | Overvoltage protection device for battery charger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201032686Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110994706A (en) * | 2019-04-30 | 2020-04-10 | 宁德时代新能源科技股份有限公司 | Battery protection device, battery system and protection method |
-
2006
- 2006-11-01 CN CNU2006200155588U patent/CN201032686Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110994706A (en) * | 2019-04-30 | 2020-04-10 | 宁德时代新能源科技股份有限公司 | Battery protection device, battery system and protection method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |