CN104953556A - Low-power-consumption overvoltage protective device for nickel-metal hydride battery - Google Patents
Low-power-consumption overvoltage protective device for nickel-metal hydride battery Download PDFInfo
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- CN104953556A CN104953556A CN201510352123.6A CN201510352123A CN104953556A CN 104953556 A CN104953556 A CN 104953556A CN 201510352123 A CN201510352123 A CN 201510352123A CN 104953556 A CN104953556 A CN 104953556A
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Abstract
The invention provides a low-power-consumption overvoltage protective device for a nickel-metal hydride battery. The low-power-consumption overvoltage protective device mainly comprises a power connection module, a voltage acquisition and comparison module, a charging module, a battery overdischarge protection module and a voltage detection module, wherein the power connection module accesses voltage and transmits the voltage to the voltage acquisition and comparison module, the voltage acquisition and comparison module is connected with the charging module which is connected with a battery input end and the battery overdischarge protection module respectively, a battery output end is connected with a load connection module and the voltage detection module, and the voltage detection module is connected with the voltage acquisition and comparison module. The low-power-consumption overvoltage protective device is simple in structure, the battery is protected from damage due to overdischarge with the adoption of the battery overdischarge protection module, and the service life of the battery is prolonged; with the adoption of the voltage detection module, battery voltage is accurately measured by controlling divider resistance, battery damage caused by overvoltage is prevented, and the battery is protected.
Description
Technical field
The present invention relates to Ni-MH battery field, particularly relate to a kind of low-power consumption Ni-MH battery over-pressure safety device.
Background technology
Battery is articles for use indispensable in people's daily life, and its volume is changeable, can be a lot of equipment and provides electric power, greatly facilitate the work of people, life.The battery small volume used in the such as mini-plant such as torch, walkman, easy to use, this battery can be rechargeable battery, and the battery of these types all adopts electrochemical principle, its structure is generally arrange electrode on shell, the accumulate body in this Electrode connection shell.
Ni-H cell is the high-energy secondary battery of new generation after ickel-cadmium cell, because it has high power capacity, the feature such as pollution-free and the favor of extremely people, is one of important developing direction of current secondary cell.
Battery is widely used in modern society; but the overvoltage protective module circuit structure that the charging Ni-MH battery produced due to prior art adopts is complicated, cost is high; the voltage detection module adopted measures inaccuracy; frequent meeting causes potential safety hazard because cross long charge or discharge, causes unnecessary loss.
Summary of the invention
In order to solve the problem, the invention provides a kind of structure simple, battery over-discharge can be avoided to cause damage; improve battery, by the control to divider resistance, the accurate measurement to cell voltage can be realized; prevent overvoltage from causing cell damage, the technical scheme of protection battery:
A kind of low-power consumption Ni-MH battery over-pressure safety device; mainly comprise plant-grid connection module, voltage acquisition comparison module, charging module, battery over-discharge protection module and voltage detection module; voltage acquisition comparison module is sent to after plant-grid connection module access voltage; voltage acquisition comparison module connects charging module; charging module connects cell input terminal and battery over-discharge protection module respectively; battery output connects load access module and voltage detection module, and voltage detection module connects voltage acquisition comparison module.
As preferably; battery over-discharge protection module comprises relay, diode B, diode C, triode B, resistance F, resistance G; relay one pin is connected with battery positive; relay two pin is unsettled; relay tripod is connected with relay four pin, diode B negative terminal; and relay tripod is connected with the anode of charging module; collector electrode, the diode B anode of relay five pin and triode B are connected; the base stage of triode B is connected with resistance F one end, resistance G one end; the other end of resistance F is connected with the anode of voltage-stabiliser tube C, the other end ground connection of resistance G.
As preferably, voltage detection module comprises voltage transformation module, main control unit, comparator, voltage transformation module connects Input voltage terminal and main control unit one end respectively, main control unit pout holds contact resistance D one end, resistance D other end connecting triode A base stage, triode A emitter contact resistance B one end, Input voltage terminal, triode A collector electrode contact resistance C successively, the resistance B other end, resistance A, main control unit pin holds and connects comparator output terminal, comparator negative input is contact resistance E one end respectively, diode A negative terminal, diode A positive ending grounding, comparator electrode input end is connected with resistance C one end.
Beneficial effect of the present invention is:
(1) the battery over-discharge protection module of the present invention's employing, can avoid battery over-discharge to cause damage, improves battery.
(2) the present invention increases voltage detection module, can, by the control to divider resistance, realize, to the accurate measurement of cell voltage, preventing overvoltage from causing cell damage, protection battery.
Accompanying drawing explanation
Fig. 1 is each module connection structure block diagram of the present invention;
Fig. 2 is battery over-discharge protection module circuit diagram of the present invention;
Fig. 3 is voltage detection module circuit diagram of the present invention.
Embodiment
For making goal of the invention of the present invention, technical scheme and advantage clearly, below in conjunction with accompanying drawing, embodiments of the present invention are described in further detail.
As shown in Figure 1, a kind of low-power consumption Ni-MH battery over-pressure safety device, mainly comprise plant-grid connection module 1, voltage acquisition comparison module 2, charging module 3, battery over-discharge protection module 4 and voltage detection module 5, plant-grid connection module 1 is sent to voltage acquisition comparison module 2 after accessing voltage, voltage acquisition comparison module 2 connects charging module 3, charging module 3 connects battery 6 input and battery over-discharge protection module 4 respectively, battery 6 output connects load access module 7 and voltage detection module 5, voltage detection module 5 connects voltage acquisition comparison module 2.
As shown in Figure 2, battery over-discharge protection module 4 comprises relay 8, diode B 2c, diode C 3c, triode B 2b, resistance F 6a, resistance G 7a, relay 8 one pin 81 is connected with battery 6 anode, relay 8 two pin 82 is unsettled, relay 8 tripod 83 and relay 8 four pin 84, diode B 2c negative terminal connects, and relay 8 tripod 83 is connected with the anode of charging module 3, the collector electrode of relay 8 five pin 85 and triode B 2b, diode B 2c anode is connected, the base stage of triode B 2b and resistance F 6a one end, resistance G 7a one end connects, the other end of resistance F 6a is connected with the anode of voltage-stabiliser tube C 3c, the other end ground connection of resistance G 7a, when there being charging voltage, make triode B 2b conducting, have between relay 8 four pin 84 and five pin 85 and flow through certain electric current, relay 8 adhesive, namely a pin 81 is communicated with tripod 83, charging module 3 charges to battery 6.When charging module 3 disconnects; battery 6 regular picture; when cell voltage be enough to maintain relay 8 close time; load normal power supply given by battery 6; when cell voltage drops to a certain degree, deficiency thinks that relay 8 closes, and battery discharge loop disconnects; protect battery over-discharge, thus effectively extend the useful life of battery.When relay 8 disconnects, triode B 2b ends, and electric current residual between relay 8 four pin 84 and five pin 85 is discharged by diode B 2c, thus protects relay 8 and can not be burned.The battery over-discharge protection module that the present invention adopts, can avoid battery over-discharge to cause damage, improves battery.
As shown in Figure 3, voltage detection module 5 comprises voltage transformation module 51, main control unit 52, comparator 53, voltage transformation module 51 connects Input voltage terminal and main control unit 52 one end respectively, main control unit 52 pout holds contact resistance D 4a one end, resistance D 4a other end connecting triode A 1b base stage, triode A 1b emitter contact resistance B 2a one end, Input voltage terminal, triode A 1b collector electrode contact resistance C 3a successively, the resistance B 2a other end, resistance A 1a, main control unit 52 pin holds and connects comparator 53 output, comparator 53 negative input is contact resistance E 5a one end respectively, diode A 1c negative terminal, diode A 1c positive ending grounding, comparator 53 electrode input end is connected with resistance C 3a one end.Resistance A 1a, resistance B 2a, resistance C 3a are divider resistance, and when resistance A 1a, resistance B 2a, resistance C 3a are fixed resistance, resistance is known, thus determines the scope of cell voltage.Resistance A 1a, resistance B 2a, resistance C 3a are set to adjustable resistance; then can determine the different voltage range of cell voltage; the present invention increases voltage detection module; can by the control to divider resistance; realize the accurate measurement to cell voltage; prevent overvoltage from causing cell damage, protection battery.
Above-described embodiment is preferred embodiment of the present invention; it is not the restriction to technical solution of the present invention; as long as without the technical scheme that creative work can realize on the basis of above-described embodiment, all should be considered as falling within the scope of the rights protection of patent of the present invention.
Claims (3)
1. a low-power consumption Ni-MH battery over-pressure safety device, mainly comprise plant-grid connection module (1), voltage acquisition comparison module (2), charging module (3), battery over-discharge protection module (4) and voltage detection module (5), it is characterized in that: after described plant-grid connection module (1) access voltage, be sent to described voltage acquisition comparison module (2), described voltage acquisition comparison module (2) connects described charging module (3), described charging module (3) connects described battery (6) input and described battery over-discharge protection module (4) respectively, described battery (6) output connects load access module (7) and described voltage detection module (5), described voltage detection module (5) connects described voltage acquisition comparison module (2).
2. a kind of low-power consumption Ni-MH battery over-pressure safety device according to claim 1, it is characterized in that: described battery over-discharge protection module (4) comprises relay (8), diode B(2c), diode C(3c), triode B(2b), resistance F(6a), resistance G(7a), relay (8) one pin (81) is connected with described battery (6) anode, relay (8) two pin (82) is unsettled, relay (8) tripod (83) and relay (8) four pin (84), diode B(2c) negative terminal connection, and relay (8) tripod (83) is connected with the anode of described charging module (3), relay (8) five pin (85) and triode B(2b) collector electrode, diode B(2c) anode be connected, triode B(2b) base stage and resistance F(6a) one end, resistance G(7a) one end connection, resistance F(6a) the other end and voltage-stabiliser tube C(3c) anode be connected, resistance G(7a) other end ground connection.
3. a kind of low-power consumption Ni-MH battery over-pressure safety device according to claim 1, it is characterized in that: described voltage detection module (5) comprises voltage transformation module (51), main control unit (52), comparator (53), voltage transformation module (51) connects Input voltage terminal and described main control unit (52) one end respectively, described main control unit (52) pout holds contact resistance D(4a) one end, resistance D(4a) other end connecting triode A(1b) base stage, triode A(1b) emitter contact resistance B(2a) one end, Input voltage terminal, triode A(1b) collector electrode contact resistance C(3a successively), resistance B(2a) other end, resistance A(1a), described main control unit (52) pin holds and connects described comparator (53) output, described comparator (53) negative input is contact resistance E(5a respectively) one end, diode A(1c) negative terminal, diode A(1c) positive ending grounding, described comparator (53) electrode input end and resistance C(3a) one end is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510352123.6A CN104953556A (en) | 2015-06-24 | 2015-06-24 | Low-power-consumption overvoltage protective device for nickel-metal hydride battery |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510352123.6A CN104953556A (en) | 2015-06-24 | 2015-06-24 | Low-power-consumption overvoltage protective device for nickel-metal hydride battery |
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| CN104953556A true CN104953556A (en) | 2015-09-30 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200990505Y (en) * | 2006-08-31 | 2007-12-12 | 朱洪兵 | Battery charging protective circuit |
| KR20090072281A (en) * | 2007-12-28 | 2009-07-02 | 넥스콘 테크놀러지 주식회사 | A over voltage prtection circuit of cell of battery pack for a hybrid electric vehicle and the method thereof |
| CN202550491U (en) * | 2012-04-25 | 2012-11-21 | 吴雯雯 | Battery over-discharge projection circuit |
| CN103166200A (en) * | 2011-12-09 | 2013-06-19 | 海洋王照明科技股份有限公司 | Battery protection circuit and explosion-proof lighting device |
| CN203218871U (en) * | 2013-04-03 | 2013-09-25 | 天津市尚洲科技有限公司 | Low-power nickel-hydrogen battery protection circuit |
| CN104064827A (en) * | 2014-06-26 | 2014-09-24 | 四川宝生新能源电池有限公司 | Nickel-metal hydride battery pack with safety protection system |
| CN204794044U (en) * | 2015-06-24 | 2015-11-18 | 安徽亿诺新能源有限责任公司 | Low -power consumption nickel -hydrogen battery overvoltage protector |
-
2015
- 2015-06-24 CN CN201510352123.6A patent/CN104953556A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200990505Y (en) * | 2006-08-31 | 2007-12-12 | 朱洪兵 | Battery charging protective circuit |
| KR20090072281A (en) * | 2007-12-28 | 2009-07-02 | 넥스콘 테크놀러지 주식회사 | A over voltage prtection circuit of cell of battery pack for a hybrid electric vehicle and the method thereof |
| CN103166200A (en) * | 2011-12-09 | 2013-06-19 | 海洋王照明科技股份有限公司 | Battery protection circuit and explosion-proof lighting device |
| CN202550491U (en) * | 2012-04-25 | 2012-11-21 | 吴雯雯 | Battery over-discharge projection circuit |
| CN203218871U (en) * | 2013-04-03 | 2013-09-25 | 天津市尚洲科技有限公司 | Low-power nickel-hydrogen battery protection circuit |
| CN104064827A (en) * | 2014-06-26 | 2014-09-24 | 四川宝生新能源电池有限公司 | Nickel-metal hydride battery pack with safety protection system |
| CN204794044U (en) * | 2015-06-24 | 2015-11-18 | 安徽亿诺新能源有限责任公司 | Low -power consumption nickel -hydrogen battery overvoltage protector |
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Application publication date: 20150930 |