CN207939195U - New energy car battery charging short-circuit protection - Google Patents
New energy car battery charging short-circuit protection Download PDFInfo
- Publication number
- CN207939195U CN207939195U CN201820384951.7U CN201820384951U CN207939195U CN 207939195 U CN207939195 U CN 207939195U CN 201820384951 U CN201820384951 U CN 201820384951U CN 207939195 U CN207939195 U CN 207939195U
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- circuit
- transport
- placing device
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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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Emergency Alarm Devices (AREA)
Abstract
The utility model discloses new energy car battery charging short-circuit protections,Including current detection circuit,Compare regulator circuit and short-circuit alarming circuit,Current detection circuit detects the electric current in new energy car battery charging circuit by ACS712 current sensors U1,And be converted to proportional voltage signal output,Transport and placing device A1 is sent into after RC filter filterings to compare,Compare regulator circuit current detection circuit output signal is compared and enlarged by transport and placing device A1,The feedback end that transport and placing device A2 is connected in parallel on transport and placing device A1 follows amplification,Transport and placing device A1 output signals are after triode regulator circuit steady pressure treatment,Short-circuit alarming circuit is driven as control signal,When new energy car battery charges short circuit,High level signal is stablized in the output of triode regulator circuit makes metal-oxide-semiconductor Q1 be connected,Relay K coils obtain it is electric make its normally-closed contact disconnect,Normally opened contact is closed,To cut off battery pack charge power supply end,And so that electric bell LS is obtained and electric send out alarm signal.
Description
Technical field
The utility model is related to new-energy automobile fields, more particularly to new energy car battery charging short-circuit protection dress
It sets.
Background technology
With the fast development of new-energy automobile, safety problem caused by new-energy automobile how is solved, and become vapour
The new topic and difficult point of garage's industry, new-energy automobile such as " shock by electricity " and " short because introducing electric drive so there is
The risk on road " etc there is the on fire and explosion wind caused by energy abrupt release due to there is the presence of high-energy carrier
Danger, so new energy car battery short-circuit protection in charging process is essential, and short-circuit protection judges short circuit
Accuracy and the rapidity of reaction should constantly reinforce.
So the utility model provides a kind of new scheme to solve the problems, such as this.
Utility model content
For the above situation, to overcome the defect of the prior art, the utility model to be designed to provide new-energy automobile
Battery charge short-circuit protection, have be skillfully constructed, the characteristic of human oriented design, can effectively improve new-energy automobile electricity
Pond charging short-circuit protection answers the rapidity of accuracy and reaction that short circuit judges.
Its technical solution solved is new energy car battery charging short-circuit protection, including current detection circuit, ratio
Compared with regulator circuit and short-circuit alarming circuit, the current detection circuit detects new energy car battery by current sensor and charges
Electric current in circuit, and be converted to the voltage signal proportional to detection electric current and export, it is sent into after the processing of RC low-pass filters
It is described relatively regulator circuit input terminal, it is described relatively regulator circuit by transport and placing device A1 by current detection circuit output signal into
Row relatively amplifies, and the feedback end that transport and placing device A2 is connected in parallel on transport and placing device A1 follows amplification, transport and placing device A1 output signals steady through triode
After volt circuit steady pressure treatment, the short-circuit alarming circuit is driven as control signal；
The current detection circuit includes the current sensor U1 of model ACS712, current sensor U1 output voltages letter
The noninverting input of transport and placing device A1, current sensor number are sent into after the RC low-pass filters processing of resistance R1 and capacitance C1 compositions
U1 is grounded by+5V power supply power supplies, the ground terminal of current sensor U1.
Preferably, the relatively regulator circuit includes transport and placing device A1, and transport and placing device A1 reverse input ends pass through resistance R4 and+5V
Power supply connects, and is grounded by resistance R3, and an output feedback signal part of transport and placing device A1 flows into transport and placing device A1's through resistance R2
Noninverting input, another part flow into the noninverting input of transport and placing device A2, the reverse input end of transport and placing device A2 by resistance R5 with
The output end of transport and placing device A2 connects, and the output signal of transport and placing device A2 flows into the noninverting input of transport and placing device A1 through diode VD1, fortune
The output signal part for putting device A1 flows into the collector of triode VT1, and another part flows into the base of triode VT1 through resistance R6
Pole, resistance R6, triode VT1 and zener diode DZ1 form triode regulator circuit, the cathode of zener diode DZ1 and three
The base stage of pole pipe VT1 connects, the plus earth of zener diode DZ1, and the signal after voltage stabilizing is exported from triode VT1 emitters.
Compared with prior art, the beneficial effects of the utility model are as follows：
Electric current in 1.ACS712 current sensors U1 detection new energy car battery charging circuits, and be converted to and detect
The proportional voltage signal output of electric current, feeding transport and placing device A1 is compared and enlarged after the processing of RC low-pass filters, transport and placing device
The feedback end that A2 is connected in parallel on transport and placing device A1 follows amplification, and transport and placing device A1 output signals are after triode steady pressure treatment, as control
Signal drives short-circuit alarming circuit, and short-circuit alarming circuit cuts off battery power when charging short circuit, and sends out alarm signal, electricity
Road design is simple ingenious, has prodigious Development volue and use value.
2. transport and placing device A1 reverse input ends are connect by resistance R4 with+5V power supplys, as the comparison signal of transport and placing device A1,
When charging short circuit occurs, excessive transport and placing device A1 noninverting input signal voltage values are more than comparison signal voltage value, and transport and placing device A1 is defeated
Go out the noninverting input that high level signal flows into transport and placing device A1 after following transport and placing device A2 to amplify through diode VD1, to transport and placing device
A1 carries out feedback compensation, improves the accuracy and rapidity of new energy car battery charging short-circuit protection.
Description of the drawings
Fig. 1 is the circuit module figure of the utility model new energy car battery charging short-circuit protection.
Fig. 2 is the circuit diagram of the utility model new energy car battery charging short-circuit protection.
Specific implementation mode
Aforementioned and other technology contents, feature and effect in relation to the utility model, in following cooperation with reference to figures 1 through attached
Fig. 2 is in the detailed description of embodiment, can clearly present.The structure content being previously mentioned in following embodiment is to say
Bright book attached drawing is reference.
Embodiment one, new energy car battery charge short-circuit protection, including current detection circuit, compare regulator circuit
With short-circuit alarming circuit, which is characterized in that the current detection circuit detects new energy car battery by current sensor and fills
Electric current in circuit, and be converted to the voltage signal proportional to detection electric current and export, it is sent after the processing of RC low-pass filters
Enter the input terminal of the relatively regulator circuit, the relatively regulator circuit is by transport and placing device A1 by current detection circuit output signal
It is compared and enlarged, the feedback end that transport and placing device A2 is connected in parallel on transport and placing device A1 follows amplification, and transport and placing device A1 output signals are through triode
After regulator circuit steady pressure treatment, the short-circuit alarming circuit is driven as control signal；
The current detection circuit includes the current sensor U1 of model ACS712, current sensor U1 output voltages letter
Number easily by external interference, transport and placing device A1 is sent into after eliminating high frequency spurs using the RC low-pass filters of resistance R1 and capacitance C1 compositions
Noninverting input, improve the anti-interference of device, current sensor U1 is by+5V power supply power supplies, the ground connection of current sensor U1
End ground connection.
Embodiment two, on the basis of embodiment one, the relatively regulator circuit includes transport and placing device A1, in order to make new energy
Automobile batteries charging short-circuit protection fast and accurately makes protection reaction in short circuit, is reversely inputted using transport and placing device A1
End is connect by resistance R4 with+5V power supplys, and is grounded by resistance R3, as the comparison signal of transport and placing device A1, is being charged
When short-circuit, excessive transport and placing device A1 noninverting input signal voltage values are more than comparison signal voltage value, and transport and placing device A1 exports high level
A signal part flows into the noninverting input of transport and placing device A1 through resistance R2, and another part flows into the noninverting input of transport and placing device A2,
The reverse input end of transport and placing device A2 is connect by resistance R5 with the output end of transport and placing device A2, through two after following transport and placing device A2 to amplify
Pole pipe VD1 flows into the noninverting input of transport and placing device A1, and feedback compensation is carried out to transport and placing device A1, improves the accuracy and quickly of device
Property, the collector of the output signal part inflow triode VT1 of transport and placing device A1, another part flows into triode through resistance R6
The base stage of VT1, resistance R6, triode VT1 and zener diode DZ1 composition triode regulator circuits believe the output of transport and placing device A1
Number it is amplified voltage stabilizing, improves the stability of device, the cathode of zener diode DZ1 is connect with the base stage of triode VT1, voltage stabilizing
The plus earth of diode DZ1, the signal after voltage stabilizing are exported from triode VT1 emitters.
Embodiment three, on the basis of embodiment two, the short-circuit alarming circuit includes metal-oxide-semiconductor Q1, the grid of metal-oxide-semiconductor Q1
It is connect with the emitter of triode VT1, when new energy car battery charges short circuit, high level letter is stablized in triode VT1 outputs
So that metal-oxide-semiconductor Q1 is connected, relay K coils obtain it is electric so that its normally-closed contact is disconnected, normally opened contact is closed, and is filled to cut off battery pack
Electric power end, and make electric bell LS obtain it is electric send out alarm signal, the drain electrode of metal-oxide-semiconductor Q1 is connect with the ports relay K 5, metal-oxide-semiconductor Q1's
Source electrode is grounded, and+5V power supplys are connect by resistance R7 with the ports relay K 4, and the ports relay K 1 connect AC220V power supplys, relay
The ports device K 3 connect the charging end of battery pack, and the ground terminal ground connection of battery pack, the ports relay K 2 pass through resistance R8 connection electric bells
The anode of LS, the cathode ground connection of electric bell LS.
When the utility model is specifically used, when new energy car battery charges short circuit, the U1 inspections of ACS712 current sensors
Abnormal high current signal is measured, and is converted to proportional voltage signal output, transport and placing device A1 is sent into after RC filter filterings
Compare, transport and placing device A1 noninverting input applied signal voltage values are more than its reverse input end input signal comparing voltage value, make fortune
The noninverting input that a device A1 output high level signal parts flow into transport and placing device A1 through resistance R2 is put, another part flows into transport and placing device
The noninverting input of A2 flows into the noninverting input of transport and placing device A1, to amplifier after transport and placing device A2 follows amplification through diode VD1
Device A1 carries out feedback compensation, improves the accuracy and rapidity of device, resistance R6, triode VT1 and zener diode DZ1 compositions
Triode regulator circuit is amplified voltage stabilizing to the output signal of transport and placing device A1, improves the stability of device, triode voltage stabilizing electricity
High level signal is stablized in road output makes metal-oxide-semiconductor Q1 be connected, relay K coils obtain it is electric so that its normally-closed contact is disconnected, normally opened contact closes
It closes, stops charging to cut off battery pack charge power supply end, and so that electric bell LS is obtained and electric send out alarm signal.
The above is to combine specific implementation mode further detailed description of the utility model, and it cannot be said that originally
Utility model specific implementation is limited only to this；For belonging to the utility model and for those skilled in the technology concerned,
Under the premise of technical solutions of the utility model thinking, made by expand and operating method, data replacement, should all fall
Within scope of protection of the utility model.
Claims (3)
- The short-circuit protection 1. new energy car battery charges, including current detection circuit, compare regulator circuit and short-circuit alarming Circuit, which is characterized in that the current detection circuit is detected by current sensor in new energy car battery charging circuit Electric current, and be converted to the voltage signal proportional to detection electric current and export, it is sent into the comparison after the processing of RC low-pass filters The input terminal of regulator circuit, current detection circuit output signal is compared by the relatively regulator circuit by transport and placing device A1 puts Greatly, transport and placing device A2 is connected in parallel on the feedback end of transport and placing device A1 and follows amplification, transport and placing device A1 output signals steady through triode regulator circuit After pressure processing, the short-circuit alarming circuit is driven as control signal；The current detection circuit includes the current sensor U1 of model ACS712, current sensor U1 output voltage signals warp Be sent into the noninverting input of transport and placing device A1 after the RC low-pass filters processing of resistance R1 and capacitance C1 compositions, current sensor U1 by + 5V power supply power supplies, the ground terminal ground connection of current sensor U1.
- The short-circuit protection 2. new energy car battery as described in claim 1 charges, which is characterized in that the relatively voltage stabilizing electricity Road includes transport and placing device A1, and transport and placing device A1 reverse input ends are connect by resistance R4 with+5V power supplys, and are grounded by resistance R3, fortune The output feedback signal part for putting device A1 flows into the noninverting input of transport and placing device A1 through resistance R2, and another part flows into transport and placing device The reverse input end of the noninverting input of A2, transport and placing device A2 is connect by resistance R5 with the output end of transport and placing device A2, transport and placing device A2 Output signal the noninverting input of transport and placing device A1 is flowed into through diode VD1, an output signal part of transport and placing device A1 flows into three The collector of pole pipe VT1, another part flow into the base stage of triode VT1, resistance R6, triode VT1 and voltage stabilizing two through resistance R6 Pole pipe DZ1 forms triode regulator circuit, and the cathode of zener diode DZ1 is connect with the base stage of triode VT1, zener diode The plus earth of DZ1, the signal after voltage stabilizing are exported from triode VT1 emitters.
- The short-circuit protection 3. new energy car battery as claimed in claim 2 charges, which is characterized in that the short-circuit alarming electricity Road includes metal-oxide-semiconductor Q1, and the grid of metal-oxide-semiconductor Q1 is connect with the emitter of triode VT1, drain electrode and the ports relay K of metal-oxide-semiconductor Q1 5 connections, the source electrode ground connection of metal-oxide-semiconductor Q1 ,+5V power supplys are connect by resistance R7 with the ports relay K 4, and the ports relay K 1 connect AC220V power supplys, the ports relay K 3 connect the charging end of battery pack, and the ground terminal ground connection of battery pack, the ports relay K 2 pass through The anode of resistance R8 connection electric bells LS, the cathode ground connection of electric bell LS.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820384951.7U CN207939195U (en) | 2018-03-21 | 2018-03-21 | New energy car battery charging short-circuit protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820384951.7U CN207939195U (en) | 2018-03-21 | 2018-03-21 | New energy car battery charging short-circuit protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207939195U true CN207939195U (en) | 2018-10-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820384951.7U Expired - Fee Related CN207939195U (en) | 2018-03-21 | 2018-03-21 | New energy car battery charging short-circuit protection |
Country Status (1)
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| CN (1) | CN207939195U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110450662A (en) * | 2019-09-18 | 2019-11-15 | 东风华神汽车有限公司 | A kind of identification of versatility charging pile accessory power supply and conversion circuit |
| CN111952973A (en) * | 2020-08-31 | 2020-11-17 | 郑州工程技术学院 | Power supply circuit of transfer robot |
| CN112622623A (en) * | 2020-12-18 | 2021-04-09 | 武汉理工大学 | New energy automobile battery protection device |
| CN113451992A (en) * | 2021-09-02 | 2021-09-28 | 江西影创信息产业有限公司 | MR glasses power supply protection circuit |
| WO2024089685A1 (en) * | 2022-10-27 | 2024-05-02 | Irp Nexus Group Ltd | A capacitor charging circuit |
-
2018
- 2018-03-21 CN CN201820384951.7U patent/CN207939195U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110450662A (en) * | 2019-09-18 | 2019-11-15 | 东风华神汽车有限公司 | A kind of identification of versatility charging pile accessory power supply and conversion circuit |
| CN111952973A (en) * | 2020-08-31 | 2020-11-17 | 郑州工程技术学院 | Power supply circuit of transfer robot |
| CN112622623A (en) * | 2020-12-18 | 2021-04-09 | 武汉理工大学 | New energy automobile battery protection device |
| CN112622623B (en) * | 2020-12-18 | 2022-07-19 | 武汉理工大学 | New energy automobile battery protection device |
| CN113451992A (en) * | 2021-09-02 | 2021-09-28 | 江西影创信息产业有限公司 | MR glasses power supply protection circuit |
| CN113451992B (en) * | 2021-09-02 | 2021-11-16 | 江西影创信息产业有限公司 | MR glasses power supply protection circuit |
| WO2024089685A1 (en) * | 2022-10-27 | 2024-05-02 | Irp Nexus Group Ltd | A capacitor charging circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200102 Address after: Room 710, 701-712, juoyue Times Square building, No. 4068, Yitian Road, Futian community, Futian District, Shenzhen City, Guangdong Province Patentee after: Shenzhen Lvting Power Technology Co.,Ltd. Address before: 100080 Dongsheng science and Technology Park, Zhongguancun, No. 66, xixiaokou Road, Haidian District, Beijing. B301, 3 / F, block B, floor B-6, Northern Territory Patentee before: ZHONG NENG DONG DAO GROUP Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181002 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |