CN201268232Y - Accumulator battery monitoring and alarming device of electric vehicle - Google Patents
Accumulator battery monitoring and alarming device of electric vehicle Download PDFInfo
- Publication number
- CN201268232Y CN201268232Y CNU2008201365243U CN200820136524U CN201268232Y CN 201268232 Y CN201268232 Y CN 201268232Y CN U2008201365243 U CNU2008201365243 U CN U2008201365243U CN 200820136524 U CN200820136524 U CN 200820136524U CN 201268232 Y CN201268232 Y CN 201268232Y
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- circuit
- battery
- battery pack
- work
- storage battery
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Abstract
The utility model provides a monitoring and warning device for an electric vehicle storage battery, which comprises a series storage battery, a transient work power supply circuit, a two-way detection comparison circuit, a comparison warning circuit and a power-off isolation circuit. When the voltage difference value between any two battery terminals of the series storage battery exceeds a set limit value, the warning circuit is started to warn; the transient power supply circuit works only when being connected with a storage battery work circuit at a time, and the monitoring device does not work and consumes the electric energy of the storage battery after being isolated; and the two-way detection comparison circuit enables the voltage potentials of relative high and low terminals between any two batteries to maintain the same polarity at the input terminal of a comparison amplifier. The utility model has the advantages of low power consumption, low cost, convenience, direct view, safety and effectiveness.
Description
Affiliated technical field
The utility model relates to battery pack monitoring electronic circuit, specifically a kind of electromobile battery group monitoring alarm.
Background technology
At present more Electrical Bicycle adopts three of lead-acid storage batterys or four to be connected into battery pack and makees electric drive source, in the charge and discharge process, every all necessary synchronous working of battery in the battery pack, it is consistent that the terminal voltage of each battery is wanted, otherwise pressure reduction is crossed conference and is caused the battery pack work life to shorten greatly between battery, according to industry standard technical requirements regulation, voltage difference can not surpass certain limit value between battery consistency requirement battery, surpasses and then judges nonconformity.
The method of in the past monitoring each cell pressure of battery pack is to measure the terminal voltage occurrence of every battery earlier, compare by cpu central processing unit then, to judge the conformability characteristic of battery pack work, it is more that this method weak point is to expend the storage battery energy, complex structure, cost is high, is difficult to be approved by market.
If only consider from the performance of judging storage battery is good and bad, there is no need to obtain the concrete absolute value of every accumulator voltage, only needing in twos relatively between battery the relative voltage difference whether to satisfy regulation requires just passable, further studies show that, the battery up to standard of high conformity need not complicated control get final product normal operation, the nonconformity battery of conformability difference, also inoperative with accurate again control method, so, in order accurately to distinguish the battery quality, the design focus reduces power consumption to greatest extent just not influencing under the battery pack normal operation prerequisite, judge the voltage difference between each battery rapidly, inform the user by whether reporting to the police.
The utility model content
The purpose of this utility model just provides a kind of electromobile battery group monitoring alarm, and it can judge rapidly whether pressure reduction transfinites between each battery, can pass through audible alarm if transfinite, and reminds maintenance or replacing.
The technical scheme that the utility model is taked is: a kind of electromobile battery group monitoring alarm, by the series connection battery pack, the transient state working power circuit, two-way detection comparator circuit, relatively warning circuit and outage buffer circuit are formed, the any two battery terminal voltage differences of series connection battery pack start warning circuit when surpassing the limit value of setting and report to the police, the transient state working power circuit only constantly just begins to work on power in each battery pack work loop of connecting, and in the time period of setting, isolate by outage buffer circuit and battery pack outage, isolating the back monitoring device no longer works and loss battery pack electric energy, two-way detection comparator circuit can make the relative height terminal voltage current potential between any two batteries keep the polarity unanimity at the input end of comparison amplifier, thereby judge by the amplifier output result who compares in the warning circuit, be output as 0, do not start warning, be output as 1, start and report to the police.
The utility model has the advantages that: energy consumption is little, and cost is low, and is intuitively easy, safe and effective.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is the battery pack monitoring alarm circuit diagram that is composed in series by three storage batterys.
The specific embodiment
In Fig. 1, GB1, GB2, GB3 are storage batterys, constitute the transient state working power circuit by Q2, Q3, D16, D1-D4 is the two-way detection comparator circuit of battery GB1 and GB2, D5-D8 is the two-way detection comparator circuit of battery GB2 and GB3, D9-D12 is the two-way detection comparator circuit of battery GB3 and GB1, and comparison amplifier U4-1, U4-2, U4-3 and U5, Q1 ratio of components are than warning circuit, and C1, U1, U2, U3 constitute the outage buffer circuit.
Monitoring alarm is drawn four electric wires respectively by K switch 1 end of refuting at GB1, GB1 negative pole (being the GB2 positive pole), GB2 negative pole (being the GB3 positive pole) and GB3 negative pole, K switch conducting moment, the transient state working power circuit is started working, the outage buffer circuit is conducting at this moment, three optocoupler U1, U2, U3 is sent to separately two-way detection comparator circuit with cooresponding battery terminal voltage value, detect the difference of any two cell pressures, be input to LM324 comparison amplifier U4-1, U4-2, compare on the U4-3, when voltage difference between any two batteries surpasses particular value, this comparison amplifier is output as 1, the buzzer phone U5 pronunciation that at once promotes this moment to compare in the warning circuit is reported to the police, if voltage difference is all less than particular value between all batteries, all comparison amplifiers are output as 0, this moment, annunciator was not reported to the police, after the each several part circuit is finished one-period work in effective time in the transient state working power, the outage buffer circuit is started working, earlier by capacitor C 1 with moment store electrical energy exhaust, cause isolating optocoupler U1, U2, U3 disconnects battery terminal voltage and detects the loop, battery pack normally discharges and recharges work, monitoring alarm is no longer worked, do not expend any battery power yet, disconnect conducting again moment aforesaid cycle of operations that reruns up to K switch.
Claims (3)
1. electromobile battery group monitoring alarm, it is made up of series connection battery pack, transient state working power circuit, two-way detection comparator circuit, comparison warning circuit and outage buffer circuit, it is characterized in that: start warning circuit when any two battery terminal voltage differences of described series connection battery pack surpass the limit value of setting and report to the police.
2. a kind of electromobile battery group monitoring alarm according to claim 1, it is characterized in that: described transient state working power circuit only constantly just begins to work on power in each battery pack work loop of connecting, and in the time period of setting, isolate by outage buffer circuit and battery pack outage, isolate the back monitoring device and no longer work and loss battery pack electric energy.
3. a kind of electromobile battery group monitoring alarm according to claim 1, it is characterized in that: described two-way detection comparator circuit can make the relative height terminal voltage current potential between any two batteries keep the polarity unanimity at the input end of comparison amplifier, thereby judge by the amplifier output result who compares in the warning circuit, be output as 0, do not start warning, be output as 1, start and report to the police.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201365243U CN201268232Y (en) | 2008-09-12 | 2008-09-12 | Accumulator battery monitoring and alarming device of electric vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201365243U CN201268232Y (en) | 2008-09-12 | 2008-09-12 | Accumulator battery monitoring and alarming device of electric vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201268232Y true CN201268232Y (en) | 2009-07-08 |
Family
ID=40840820
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201365243U Expired - Fee Related CN201268232Y (en) | 2008-09-12 | 2008-09-12 | Accumulator battery monitoring and alarming device of electric vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201268232Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20150074475A (en) * | 2013-12-24 | 2015-07-02 | 주식회사 두산 | Apparatus and method for sensing power source abnormality of engine type forklift |
| CN110329075A (en) * | 2019-08-05 | 2019-10-15 | 横店集团东磁股份有限公司 | A kind of control system and control method and electric vehicle based on lithium battery power supply |
-
2008
- 2008-09-12 CN CNU2008201365243U patent/CN201268232Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20150074475A (en) * | 2013-12-24 | 2015-07-02 | 주식회사 두산 | Apparatus and method for sensing power source abnormality of engine type forklift |
| CN105849029A (en) * | 2013-12-24 | 2016-08-10 | 株式会社斗山 | Apparatus and method for detecting power abnormality of engine-type forklift truck |
| US9952290B2 (en) | 2013-12-24 | 2018-04-24 | Doosan Corporation | Apparatus and method for detecting power abnormality of engine-type forklift truck |
| KR102128385B1 (en) * | 2013-12-24 | 2020-06-30 | 주식회사 두산 | Apparatus and method for sensing power source abnormality of engine type forklift |
| CN110329075A (en) * | 2019-08-05 | 2019-10-15 | 横店集团东磁股份有限公司 | A kind of control system and control method and electric vehicle based on lithium battery power supply |
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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: 20090708 Termination date: 20100912 |