CN102035048B - Storage battery protector - Google Patents
Storage battery protector Download PDFInfo
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- CN102035048B CN102035048B CN2009101797443A CN200910179744A CN102035048B CN 102035048 B CN102035048 B CN 102035048B CN 2009101797443 A CN2009101797443 A CN 2009101797443A CN 200910179744 A CN200910179744 A CN 200910179744A CN 102035048 B CN102035048 B CN 102035048B
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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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Abstract
The invention discloses a storage battery protector for an electric vehicle, comprising a discharge protective circuit, wherein the circuit comprises a singlechip, an ignition switch control subcircuit, an electric control subcircuit and an LED (Light Emitting Diode) state display subcircuit; threshold voltage is arranged in the singlechip; the ignition switch control subcircuit, the electric control subcircuit and the LED sate display subcircuit are respectively connected with the singlechip; the singlechip is used for monitoring the voltage of the storage battery and comparing the monitored voltage with the threshold voltage; when the monitored voltage is lower than the threshold voltage, the ignition switch control subcircuit or the electric control subcircuit changes the work state, so that the electric vehicle drives at the reduced speed or stops driving and displays in the LED state to prompt of the user and further the storage battery is damaged due to the over discharge during under voltage.
Description
[technical field]
The present invention relates to a kind of storage battery protecting device, refer to especially a kind of storage battery protecting device of electric vehicle.
[background technology]
In electric motor car, being used for the batteries of draw often need to stand long work, common lead-acid batteries is when discharge, its voltage can constantly descend, reach the cut-ff voltage of batteries when discharge voltage after, must stop discharge this moment, if continue to use this battery, then can cause the damage to the inside battery active material, affect the useful life of battery.
The electric weight of electric vehicle battery group is mainly measured by voltmeter and voltameter now, the voltage of voltmeter and voltameter Real-Time Monitoring battery pack during use, when its numerical value reaches cut-ff voltage or is lower than cut-ff voltage, the driver need stop the use to electric motor car, and vehicle in time charged, certainly, this requires the driver must be able to know the use state of electrolytic cell, avoids damaging battery in order in time charge the battery.
Yet, a lot of motor vehicle drivers are not through relevant examination and training, to such an extent as to when car operation the driver often can not be in time, be expressly understood that the use state of battery and battery charged, sometimes can not continue to travel even with motor vehicle and return the foundation of charging as vehicle, but battery voltage was significantly less than cut-ff voltage this moment.Large or use more frequently occasion at flow of the people, can't guarantee that not only motor vehicle in time charges, sometimes even also to satisfy manned demand, add complicated environment for use, the impact of applied environment so that the voltmeter of monitoring usefulness and voltameter are originally experienced and have the larger error of calculation.More than several situations all be easy to cause the over-discharge can of battery pack, thereby damage battery.
In view of the above problems, be necessary to provide a kind of storage battery protecting device to solve the problems referred to above.
[summary of the invention]
Technical problem solved by the invention is to provide a kind of storage battery protecting device, and it can effectively prevent the storage battery over-discharge can and be impaired.
For solving the problems of the technologies described above; the present invention adopts following technical scheme: a kind of storage battery protecting device; it has a discharge protection circuit; this circuit comprises the single-chip microcomputer that is provided with two threshold voltages in; the ignition lock switch control electronic circuit that is connected with described single-chip microcomputer respectively; automatically controlled control electronic circuit and led state show electronic circuit; wherein; described single-chip microcomputer is monitored described battery tension and voltage and the described threshold voltage that monitors is compared; when the battery tension that monitors is lower than one of them threshold voltage; automatically controlled control electronic circuit is in the Half Speed operating state; and led state shows that it is the first show state that electronic circuit changes the LED show state; when the battery tension that monitors is lower than wherein the another one threshold voltage; the described ignition lock switch control of described Single-chip Controlling electronic circuit; it is quit work, and led state show that it is the second show state that electronic circuit changes the LED show state.
Compared to prior art; storage battery protecting device provided by the invention is by the comparison with pre-set threshold value voltage in battery tension and the single-chip microcomputer; when cell voltage is lower than threshold voltage; change the discharge that operating state stops or slowing down storage battery by described ignition lock switch control electronic circuit or automatically controlled control electronic circuit; show correlation behavior by LED simultaneously; thus, effectively avoid the storage battery over-discharge can and impaired, and when undertension by LED display alarm user.
[description of drawings]
Fig. 1 is the discharge protection circuit figure of storage battery protecting device of the present invention.
[embodiment]
The invention provides a kind of storage battery protecting device, be provided with a discharge protection circuit in it, impaired for effectively preventing the battery over-discharge can as shown in Figure 1, and in time remind the electric motor car driver to charge the battery.Described discharge protection circuit is formed on the wiring board, and comprises that a single-chip microcomputer U, ignition lock switch control electronic circuit, automatically controlled control electronic circuit and led state show electronic circuit.
Described ignition lock switch control electronic circuit is comprised of relay K 1, divider resistance, current-limiting protection diode D1, and described relay K 1 is used for the switch of control ignition lock.Described automatically controlled control electronic circuit is comprised of relay K 2, divider resistance and current-limiting protection diode D2, and whether relay K 2 be used for control to automatically controlled control electronic circuit parallel resistance, and automatically controlled control electronic circuit is at full speed or the Half Speed state.Described led state shows that electronic circuit is comprised of two current-limiting resistance R6, R7 and a three-color LED light.Described current-limiting resistance R6, R7 connect with LED, and all join with ground wire and form the loop.
The specifications parameter of each circuit element shown in Figure 1 is applicable to best mode for carrying out the invention, wherein, described single-chip microcomputer U1 is P89LPC915, the resistance of resistance R 1, R2, R4, R5 is 5 kilo-ohms, and R6, R7 are 9 kilo-ohms, and R8 is that 360 Europe capacitor C 1 are 10 μ, C2 is 0.1 μ, the specification of relay K 1, K2 is G5V-1-12VDC, and the specification of diode D1, D2 is BAW56, and triode Q1, Q2 specification are 2N2222.
Below with reference to Fig. 1 discharge protection circuit of the present invention and operation principle are described in detail.
The pin 14 of single-chip microcomputer P89LPC915 connects described ignition lock switch control electronic circuit, be used for the control vehicle parking, pin 14 is connected with resistance R 1, the other end of resistance R 1 links to each other with the base stage of triode Q1, the grounded emitter of triode Q1, and the collector electrode of triode Q1 links to each other with relay K 1 with two that are connected in parallel simultaneously equidirectional diode D1, and the other end of relay K 1 and two diode D1 and a 12V power supply join.The node 1 of relay K 1,2 normally closed, node 1,3 gating when relay K 1 work, interface 1 connects electric motor car ignition lock switch (not shown) and capacitor C 1 by a yellow line, the other end ground connection of described capacitor C 1, the interface 2 of relay K 1 and resistance R 3 series windings, resistance R 3 other ends are connected with electric motor car ignition lock switch (not shown) by red line, node 1 and node 3 conductings of described relay K 1.
The pin 13 of single-chip microcomputer P89LPC915 connects described automatically controlled control electronic circuit, be used for the control vehicle deceleration, pin 13 is connected with resistance R 2, the other end of resistance R 2 links to each other with the base stage of triode Q2, the grounded emitter of triode Q2, the collector electrode of triode Q2 then link to each other with relay K 2 with two that are connected in parallel simultaneously equidirectional diode D2.The other end of described relay K 2 and two diode D2 and a 12V power supply join.The node 1 of relay K 2,2 normally closed, node 1,3 gatings when relay K 2 work, the node 2 of described relay K 2 is connected with resistance R 4, R5 one end of parallel connection, the other end of parallel resistance R4, R5 is connected with the potentiometer (not shown) of electric power driven car accelerator by blue line, the node 3 of relay K 2 then is connected with the potentiometer (not shown) of electric power driven car accelerator by green line, and the node 1 of described relay K 2 links to each other with node 2.
The pin 12 of single-chip microcomputer P89LPC915 is connected with resistance R 6, and the other end of this resistance R 6 is connected with red LED lamp, the other end ground connection of this red LED lamp.
The pin 11 of single-chip microcomputer P89LPC915 is connected with resistance R 7, and the other end of this resistance R 7 is connected with yellow LED lamp, the other end ground connection of this yellow LED lamp.
The pin 9 of single-chip microcomputer P89LPC915 links to each other with resistance R 8, resistance R 8 and green LED lamp series winding, the other end ground connection of this green LED lamp.
After adopting such scheme, in single-chip microcomputer P89LPC915, set in advance two threshold voltage U1, U2, in the electric motor car course of work, the size of voltage U in the single-chip microcomputer one side Real-Time Monitoring storage battery, on the other hand with two threshold voltage U1 that set in the voltage U in the storage battery and the single-chip microcomputer, U2 is size relatively, show corresponding LED lamp according to comparative result, in time to inform the operating position of driver's storage battery.
Specifically, when U＞U1, U2, relay K 1, K2 be not running all, and battery tension is normal, and electric motor car can normally move, single-chip microcomputer pin 9 normal output voltages, and this moment, the LED lamp showed green.
When U＜U1, automatically controlled control electronic circuit is started working, triode Q2 conducting, form electric current, make relay K 2 work, at this moment, the node 1 of relay K 2,3 conductings, so that one 2.5 kilo-ohms resistance in parallel between green line and the blue line, and the other end of green line and blue line is low side and the sliding end of the potentiometer (5 kilo-ohms) that is connected to electric power driven car accelerator, even at this moment will speed up the device pedal bottom of stepping on, resistance after the potentiometer parallel connection can be above 2.5 kilo-ohms yet, namely can not surpass half of maximal rate, automatically controlled control electronic circuit is in the Half Speed operating state, and electric motor car is in deceleration regime, at this moment, single-chip microcomputer pin 11 output voltages (this moment pin 9,12 stop output voltage), the LED lamp shows yellow, reminds the driver in time to charge to electric motor car.
When U＜U2, the ignition lock switch control electronic circuit of electric motor car is started working, and with triode Q1 conducting, form electric current, so that relay K 1 work, at this moment node 1,3 conductings are because described yellow line and red line are at node 1, during 2 conducting in order to electric power loop is provided for the control electronic circuit, therefore, when node 1, after 3 conductings, form between the red line of described ignition lock switch and the yellow line and open circuit, this moment, electric power loop disconnected, the control electronic circuit quits work, vehicle can not continue operation, simultaneously, and single- chip microcomputer pin 9,11 stop output voltage signal, pin 12 output voltage signals, the LED lamp shows red.
By above-mentioned discharge protection circuit; so that the protector of storage battery can play a very good protection to the battery of electric motor car; in the situation of undertension, in time remind the driver with the led state display lamp, avoid the driver to consume battery excessively, make battery impaired.
The above only is most preferred embodiment of the present invention, is not the present invention is done any pro forma restriction.Any those of ordinary skill in the art are not breaking away from the technical solution of the present invention scope situation, utilize the method content of above-mentioned announcement that technical solution of the present invention is made many possible changes and modification, all belong to the scope of claims protection.
Claims (4)
1. storage battery protecting device; it has a discharge protection circuit; this circuit comprises the single-chip microcomputer that is provided with two threshold voltages in; the ignition lock switch control electronic circuit that is connected with described single-chip microcomputer respectively; automatically controlled control electronic circuit and led state show electronic circuit; it is characterized in that: described single-chip microcomputer is monitored described battery tension and voltage and the described threshold voltage that monitors is compared; when the battery tension that monitors is lower than one of them threshold voltage; automatically controlled control electronic circuit is in the Half Speed operating state; and led state shows that it is the first show state that electronic circuit changes the LED show state; when the battery tension that monitors is lower than wherein the another one threshold voltage; the described ignition lock switch control of described Single-chip Controlling electronic circuit; it is quit work, and led state show that it is the second show state that electronic circuit changes the LED show state.
2. storage battery protecting device as claimed in claim 1; it is characterized in that: described led state shows that electronic circuit comprises a red, yellow, and green LED display lamp; wherein; yellow led display lamp Chang Liang during described automatically controlled control electronic circuit Half Speed work, red LED display lamp Chang Liang when described ignition lock switch control electronic circuit quits work.
3. storage battery protecting device as claimed in claim 1, it is characterized in that: described storage battery is the used battery of motor vehicle, described motor vehicle with Reduced Speed Now or stop to travel, changes described LED show state simultaneously when cell voltage is lower than threshold voltage.
4. storage battery protecting device as claimed in claim 3; it is characterized in that: described LED show state is divided into redness, yellow and green; described motor vehicle described LED when normally travelling shows green; described motor vehicle described LED when Reduced Speed Now shows yellow, and electric motor car described LED when stopping to travel shows red.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101797443A CN102035048B (en) | 2009-09-27 | 2009-09-27 | Storage battery protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101797443A CN102035048B (en) | 2009-09-27 | 2009-09-27 | Storage battery protector |
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| Publication Number | Publication Date |
|---|---|
| CN102035048A CN102035048A (en) | 2011-04-27 |
| CN102035048B true CN102035048B (en) | 2013-03-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101797443A Active CN102035048B (en) | 2009-09-27 | 2009-09-27 | Storage battery protector |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104215912B (en) * | 2014-09-04 | 2017-09-08 | 奇瑞汽车股份有限公司 | Battery condition detection system and method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5200688A (en) * | 1991-05-31 | 1993-04-06 | Motorola, Inc. | Vehicular charger |
| US5708348A (en) * | 1995-11-20 | 1998-01-13 | Warren Johnson | Method and apparatus for monitoring battery voltage |
| US5729192A (en) * | 1995-06-07 | 1998-03-17 | Badger; Berkley C. | Remote automobile disabler device and associated method |
| US6218812B1 (en) * | 1999-05-17 | 2001-04-17 | Mark E. Hanson | Solid state battery charger |
| CN1294064A (en) * | 1999-09-22 | 2001-05-09 | 本田技研工业株式会社 | controller of mixing power vehicle |
| CN1696850A (en) * | 2004-05-14 | 2005-11-16 | 通用汽车公司 | Method of undervoltage protection during engine cranking |
-
2009
- 2009-09-27 CN CN2009101797443A patent/CN102035048B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5200688A (en) * | 1991-05-31 | 1993-04-06 | Motorola, Inc. | Vehicular charger |
| US5729192A (en) * | 1995-06-07 | 1998-03-17 | Badger; Berkley C. | Remote automobile disabler device and associated method |
| US5708348A (en) * | 1995-11-20 | 1998-01-13 | Warren Johnson | Method and apparatus for monitoring battery voltage |
| US6218812B1 (en) * | 1999-05-17 | 2001-04-17 | Mark E. Hanson | Solid state battery charger |
| CN1294064A (en) * | 1999-09-22 | 2001-05-09 | 本田技研工业株式会社 | controller of mixing power vehicle |
| CN1696850A (en) * | 2004-05-14 | 2005-11-16 | 通用汽车公司 | Method of undervoltage protection during engine cranking |
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| CN102035048A (en) | 2011-04-27 |
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