CN106347170A - Active discharging circuit of motor controller for electric automobile - Google Patents
Active discharging circuit of motor controller for electric automobile Download PDFInfo
- Publication number
- CN106347170A CN106347170A CN201610909652.6A CN201610909652A CN106347170A CN 106347170 A CN106347170 A CN 106347170A CN 201610909652 A CN201610909652 A CN 201610909652A CN 106347170 A CN106347170 A CN 106347170A
- Authority
- CN
- China
- Prior art keywords
- circuit
- resistance
- discharge
- audion
- machine controller
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000007599 discharging Methods 0.000 title abstract 13
- 238000002955 isolation Methods 0.000 claims abstract description 29
- 239000003990 capacitor Substances 0.000 claims abstract description 21
- 230000005611 electricity Effects 0.000 claims abstract description 8
- 230000005669 field effect Effects 0.000 claims description 4
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 238000000034 method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 238000013499 data model Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses an active discharging circuit of a motor controller for an electric automobile. The active discharging circuit comprises a discharging loop, a signal isolation circuit and a power source circuit, wherein the discharging loop comprises an active discharging resistor and a discharging switch; the active discharging resistor and the discharging switch are serially connected, and are connected with a support capacitor of the motor controller in parallel; the signal isolation circuit is connected with the discharging switch, and is used for receiving a discharging instruction of the motor controller to control the connection and disconnection of the discharging switch; the power source circuit is connected with both ends of the support capacitor in parallel, is connected with the secondary side of the signal isolation circuit, and is used for obtaining electricity from the support capacitor and converting into a power source required by the secondary side of the signal isolation circuit. The active discharging circuit of the motor controller for the electric automobile has the advantages that the structure is simple, the stability and reliability are realized, the application is flexible, and the like.
Description
Technical field
The invention mainly relates to electric vehicle engineering field, refer in particular to a kind of active discharge of electric machine controller for motor vehicle
Circuit.
Background technology
In electric automobile, electric machine controller is to realize electrokinetic cell power converter and motor-driven critical power ratio portion
Part, it has been internally integrated jumbo Support Capacitor, and the high pressure on electric capacity has threat to electrical equipment and personal safety.Therefore, perhaps
How country has put into effect corresponding regulation it is desirable to after car load stops or when electrokinetic cell is extremely over-pressed, electric machine controller supports electricity
Hold and must release to safe voltage within a certain period of time.Charging method mainly has two kinds at present: active discharge and passive electric discharge.Quilt
Dynamic charging method typically using resistor coupled in parallel by the way of electric capacity two ends, can be fallen by resistance consumption by capacitance charge, but this side
Due to formula is larger due to resistance value, the guiding discharge time is long, and resistance long-term work there is also failure risk.As shown in figure 1, it is main
Dynamic charging method then by controller itself monitoring system state, in a particular state (as parking etc.), sends electric discharge instruction, closure
Discharge resistance loop, reaches the purpose quickly released.Active discharge circuit is typically by discharge resistance, high voltage relief switch, switch
Control circuit forms, and is related to isolation and the control of low-voltage circuit and high-tension circuit, existing scheme generally adopt optocoupler (or magnetic every
From, Capacitor apart device) and insulating power supply mode, this mode has the disadvantage that insulating power supply is expensive, leads to scheme
High cost；Insulating power supply must once side power supply could work, and leads to scheme application underaction it is impossible in non-transformer
The occasion providing uses；The working range of insulating power supply is generally less than 105 DEG C, applies in the serious device of this kind of heating of discharge resistance
During part region, there is failure risk.
Content of the invention
The technical problem to be solved in the present invention is that the technical problem existing for prior art, and the present invention provides one
Plant the active discharge circuit of simple, easy and simple to handle, the reliable and stable electric machine controller for motor vehicle of structure.
For solving above-mentioned technical problem, technical scheme proposed by the present invention is:
A kind of active discharge circuit of electric machine controller for motor vehicle, including discharge loop, described discharge loop is included actively
Discharge resistance and release switch, described active discharge resistance and switch of releasing connect after with the Support Capacitor of electric machine controller simultaneously
Connection, also includes signal isolation circuit and power circuit, described signal isolation circuit is connected with described switch of releasing, is used for receiving electricity
The electric discharge instruction of machine controller is switched on-off with controlling to release, and described power circuit is connected in parallel on the two ends of described Support Capacitor simultaneously
Be connected with the secondary side of signal isolation circuit, for power taking be converted to described signal isolation circuit secondary side at Support Capacitor
Required power supply.
Improvement further as technique scheme:
Described signal isolation circuit includes photoelectrical coupler u1, resistance r1, resistance r2 and resistance r3, and described resistance r1 is connected on light
The input of electric coupler u1 is to play metering function and to receive electric discharge instruction, the emitter stage warp successively of described photoelectrical coupler u1
It is grounded after resistance r2 and resistance r3, the junction point between described resistance r2 and resistance r3 is connected with switch of releasing, described power supply electricity
Road is connected with the colelctor electrode of described photoelectrical coupler u1.
Described power circuit includes audion q2, audion q3, current-limiting resistance r4, biasing resistor r5 and diode d1, institute
The colelctor electrode stating audion q2 is connected with the positive pole of described diode d1, the negative pole of described diode d1 and signal isolation circuit phase
Even, the emitter stage of described audion q2 be connected with the base stage of audion q3 and the emitter stage through biasing resistor r5 and audion q3 and
The positive pole of Support Capacitor is connected, and the base stage of described audion q2 is connected and through current-limiting resistance r4 with the colelctor electrode of described audion q3
It is connected with the positive pole of diode d1.
Described power circuit also includes stabilivolt z1 and electric capacity c1, described stabilivolt z1 connect with electric capacity c1 after with described two
Pole pipe d1 is in parallel, and the positive pole of described stabilivolt z1 is connected with the positive pole of described diode d1, and the negative pole of described stabilivolt z1 is through electricity
Hold c1 to be connected with the negative pole of diode d1.
Described discharge loop also includes passive discharge resistance rd, and described passive discharge resistance rd is with described Support Capacitor simultaneously
Connection.
Described switch of releasing is field-effect transistor q1, the grid of described field-effect transistor q1 and described signal isolation circuit phase
Even.
Compared with prior art, it is an advantage of the current invention that:
The active discharge circuit of the electric machine controller for motor vehicle of the present invention, directly at Support Capacitor, power taking is simultaneously for power circuit
Be converted to the power supply of signal isolation circuit secondary side, without extra low-voltage isolation power source, can make in power free occasion
With making application within electric machine controller for the circuit and installing more flexible；In addition this discharge circuit structure is simple, easy and simple to handle
And cost is lower.
Brief description
Fig. 1 is active discharge circuit theory diagrams of the prior art.
Fig. 2 is the active discharge circuit theory diagrams of the present invention.
In figure label represents: 1, discharge loop；2nd, signal isolation circuit；3rd, power circuit.
Specific embodiment
Below in conjunction with Figure of description and specific embodiment, the invention will be further described.
As shown in Fig. 2 the active discharge circuit of the electric machine controller for motor vehicle of the present embodiment, including discharge loop 1,
Discharge loop 1 includes active discharge resistance r6 and switch of releasing, with motor control after active discharge resistance r6 and switch series connection of releasing
The Support Capacitor cd of device processed is in parallel, additionally includes signal isolation circuit 2 and power circuit 3, signal isolation circuit 2 with release out
Close and being connected, being switched on-off with controlling to release for receiving the electric discharge instruction of electric machine controller, thus controlling the logical of discharge loop 3
Disconnected, power circuit 3 is connected in parallel on the two ends of Support Capacitor cd and is connected with the secondary side of signal isolation circuit 2, for electric from supporting
Hold power taking be converted to power supply needed for signal isolation circuit 2 secondary side at cd.The electric machine controller for motor vehicle of the present invention
Active discharge circuit, power circuit 3 directly from Support Capacitor cd at power taking and be converted to signal isolation circuit 2 secondary side electric
Source, without extra low-tension supply, can use in power free occasion, make application within electric machine controller for the circuit and
Install more flexible；In addition this discharge circuit structure is simple, easy and simple to handle and cost is lower.
In the present embodiment, signal isolation circuit 2 includes photoelectrical coupler u1, resistance r1, resistance r2 and resistance r3, resistance r1
The input being connected on photoelectrical coupler u1 is to play metering function and to receive electric discharge instruction (high level is effective), photoelectrical coupler
The emitter stage of u1 ground connection, the junction point between resistance r2 and resistance r3 and switch (field of releasing after resistance r2 and resistance r3 successively
The grid of effect transistor q1) it is connected, provide raster data model, the colelctor electrode of power circuit 3 and photoelectrical coupler u1 for switch of releasing
It is connected.In other embodiments, photoelectrical coupler u1 can also adopt other isolating device such as relay to replace.
In the present embodiment, power circuit 3 is made up of discrete device completely, including pnp audion q2, pnp audion q3, limit
Leakage resistance r4, biasing resistor r5 and diode d1, the colelctor electrode of audion q2 is connected with the positive pole of diode d1, diode d1's
Negative pole is connected with signal isolation circuit 2, the emitter stage of audion q2 be connected with the base stage of audion q3 and through biasing resistor r5 with
The emitter stage of audion q3 is connected with the positive pole of Support Capacitor cd, and the base stage of audion q2 is connected simultaneously with the colelctor electrode of audion q3
It is connected with the positive pole of diode d1 through current-limiting resistance r4.Additionally include stabilivolt z1 and electric capacity c1, stabilivolt z1 and electric capacity c1
In parallel with diode d1 after series connection, the positive pole of stabilivolt z1 is connected with the positive pole of diode d1, and the negative pole of stabilivolt z1 is through electric capacity
C1 is connected with the negative pole of diode d1.Before power circuit 3 is down to safe voltage (as ＜ 60v) in Support Capacitor cd, sustainable
The power supply that the switch q1 that releases can effectively be driven is provided for photoelectrical coupler u1.Concrete principle is: r5 provides bias voltage, r4 for q3
For current-limiting resistance (typically taking mega-ohms resistance), z1 is power supply output offer voltage stabilizing, and d1 is commutation diode, and c1 is energy storage electricity
Hold, q2 and q3 constitutes power supply voltage stabilizing and electric current output strengthens passage.
In the present embodiment, discharge loop 1 also includes passive discharge resistance rd, and passive discharge resistance rd is with Support Capacitor simultaneously
Connection, wherein q1 be n link up mosfet, when q1 turns on, the electric charge of Support Capacitor cd quickly consumes on resistance r6, wherein r6 with
The limit value of rd requires to be determined according to specific active discharge and passive discharge time.In discharge process, can be electric to supporting
The voltage holding cd is monitored: after voltage is down to safe voltage, controller will stop active discharge instruction；If in the stipulated time
Interior, voltage does not drop to safe voltage, then the main contactor k being connected with electrokinetic cell is not disconnected, and controller can alarm sounds.
The power circuit 3 of the active discharge circuit of the present invention adopts discrete device to realize completely, and adopts mosfet conduct
Release switch (it is voltage driven type device, and current drain is very little, the small power consumption of circuit), not only can choose low power point
Vertical device controls cost, and operating ambient temperature can reach higher.
The above is only the preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-described embodiment,
All technical schemes belonging under thinking of the present invention belong to protection scope of the present invention.It should be pointed out that for the art
For those of ordinary skill, some improvements and modifications without departing from the principles of the present invention, should be regarded as the protection of the present invention
Scope.
Claims (6)
1. the active discharge circuit of a kind of electric machine controller for motor vehicle, including discharge loop (1), described discharge loop (1)
Including active discharge resistance and switch of releasing, the support with electric machine controller after described active discharge resistance and switch series connection of releasing
Electric capacity in parallel it is characterised in that also including signal isolation circuit (2) and power circuit (3), described signal isolation circuit (2) and
Described switch of releasing is connected, is switched on-off with controlling to release for receiving the electric discharge instruction of electric machine controller, described power supply electricity
Road (3) is connected in parallel on the two ends of described Support Capacitor and is connected with the secondary side of signal isolation circuit (2), at Support Capacitor
Power taking is simultaneously converted to power supply needed for described signal isolation circuit (2) secondary side.
2. the active discharge circuit of electric machine controller for motor vehicle according to claim 1 is it is characterised in that described letter
Number isolation circuit (2) includes photoelectrical coupler u1, resistance r1, resistance r2 and resistance r3, and described resistance r1 is connected on photoelectric coupling
, to play metering function and to receive electric discharge instruction, the emitter stage of described photoelectrical coupler u1 is successively through resistance r2 for the input of device u1
With after resistance r3 be grounded, the junction point between described resistance r2 and resistance r3 with release switch be connected, described power circuit (3) and
The colelctor electrode of described photoelectrical coupler u1 is connected.
3. the active discharge circuit of electric machine controller for motor vehicle according to claim 1 and 2 is it is characterised in that institute
State power circuit (3) and include audion q2, audion q3, current-limiting resistance r4, biasing resistor r5 and diode d1, described audion
The colelctor electrode of q2 is connected with the positive pole of described diode d1, and the negative pole of described diode d1 is connected with signal isolation circuit (2), institute
The emitter stage stating audion q2 is connected with the base stage of audion q3 and the emitter stage through biasing resistor r5 and audion q3 and support
The positive pole of electric capacity is connected, and the base stage of described audion q2 is connected and through current-limiting resistance r4 and two with the colelctor electrode of described audion q3
The positive pole of pole pipe d1 is connected.
4. the active discharge circuit of electric machine controller for motor vehicle according to claim 3 is it is characterised in that described electricity
Source circuit (3) also includes stabilivolt z1 and electric capacity c1, and described stabilivolt z1 is in parallel with described diode d1 after connecting with electric capacity c1,
The positive pole of described stabilivolt z1 is connected with the positive pole of described diode d1, and the negative pole of described stabilivolt z1 is through electric capacity c1 and diode
The negative pole of d1 is connected.
5. the active discharge circuit of electric machine controller for motor vehicle according to claim 1 and 2 is it is characterised in that institute
State discharge loop (1) and also include passive discharge resistance rd, described passive discharge resistance rd is in parallel with described Support Capacitor.
6. the active discharge circuit of electric machine controller for motor vehicle according to claim 1 and 2 is it is characterised in that institute
Stating switch of releasing is field-effect transistor q1, and the grid of described field-effect transistor q1 is connected with described signal isolation circuit (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610909652.6A CN106347170B (en) | 2016-10-19 | 2016-10-19 | A kind of active discharge circuit of electric machine controller for motor vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610909652.6A CN106347170B (en) | 2016-10-19 | 2016-10-19 | A kind of active discharge circuit of electric machine controller for motor vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106347170A true CN106347170A (en) | 2017-01-25 |
| CN106347170B CN106347170B (en) | 2018-09-25 |
Family
ID=57863360
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610909652.6A Active CN106347170B (en) | 2016-10-19 | 2016-10-19 | A kind of active discharge circuit of electric machine controller for motor vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106347170B (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018192132A1 (en) * | 2017-04-18 | 2018-10-25 | 上海蔚来汽车有限公司 | Electric vehicle and active discharge module, drive apparatus and electric drive system thereof |
| CN108819719A (en) * | 2018-05-03 | 2018-11-16 | 开沃新能源汽车集团有限公司 | A kind of charging method and device of motor controller of new energy automobile |
| CN109921772A (en) * | 2019-04-19 | 2019-06-21 | 骆驼集团武汉光谷研发中心有限公司 | A kind of input signal holding circuit |
| CN109995306A (en) * | 2017-12-29 | 2019-07-09 | 郑州宇通客车股份有限公司 | A kind of electric machine controller discharge control method and device |
| CN110228395A (en) * | 2019-06-14 | 2019-09-13 | 上海蔚来汽车有限公司 | Two-supply circuit system |
| CN110492459A (en) * | 2018-05-15 | 2019-11-22 | 广州小鹏汽车科技有限公司 | A kind of high-voltage discharge method, device and motor |
| CN110722988A (en) * | 2018-06-28 | 2020-01-24 | 长城汽车股份有限公司 | Discharge control circuit and initiative discharge circuit of electric capacity in machine controller |
| CN111934528A (en) * | 2020-09-25 | 2020-11-13 | 安徽鸿创新能源动力有限公司 | New energy automobile high pressure control circuit that releases |
| CN113015649A (en) * | 2018-08-03 | 2021-06-22 | 美达系统有限公司 | Active discharge system for electric or hybrid vehicle |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201966595U (en) * | 2011-02-28 | 2011-09-07 | 南车株洲电力机车有限公司 | Discharge circuit for main circuit of traction inverter of rail transit vehicle |
| CN102723909A (en) * | 2012-05-22 | 2012-10-10 | 奇瑞汽车股份有限公司 | Active bleeder circuit of motor controller for electric car and control method thereof |
| CN202749820U (en) * | 2012-06-01 | 2013-02-20 | 中冶华天工程技术有限公司 | H-bridge cascaded SVG power unit circuit |
| CN104393586A (en) * | 2014-12-04 | 2015-03-04 | 安徽巨一自动化装备有限公司 | Capacitor active discharge circuit of motor controller for electric automobile |
| CN204210327U (en) * | 2014-10-23 | 2015-03-18 | 北汽福田汽车股份有限公司 | Electric machine controller IGBT actuating device and there is its electronlmobil |
| CN105235525A (en) * | 2015-11-05 | 2016-01-13 | 株洲南车时代电气股份有限公司 | Discharging method of supporting capacitor of electric automobile driving system |
| JP2016055837A (en) * | 2014-09-12 | 2016-04-21 | スズキ株式会社 | Vehicular power supply control device |
-
2016
- 2016-10-19 CN CN201610909652.6A patent/CN106347170B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201966595U (en) * | 2011-02-28 | 2011-09-07 | 南车株洲电力机车有限公司 | Discharge circuit for main circuit of traction inverter of rail transit vehicle |
| CN102723909A (en) * | 2012-05-22 | 2012-10-10 | 奇瑞汽车股份有限公司 | Active bleeder circuit of motor controller for electric car and control method thereof |
| CN202749820U (en) * | 2012-06-01 | 2013-02-20 | 中冶华天工程技术有限公司 | H-bridge cascaded SVG power unit circuit |
| JP2016055837A (en) * | 2014-09-12 | 2016-04-21 | スズキ株式会社 | Vehicular power supply control device |
| CN204210327U (en) * | 2014-10-23 | 2015-03-18 | 北汽福田汽车股份有限公司 | Electric machine controller IGBT actuating device and there is its electronlmobil |
| CN104393586A (en) * | 2014-12-04 | 2015-03-04 | 安徽巨一自动化装备有限公司 | Capacitor active discharge circuit of motor controller for electric automobile |
| CN105235525A (en) * | 2015-11-05 | 2016-01-13 | 株洲南车时代电气股份有限公司 | Discharging method of supporting capacitor of electric automobile driving system |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018192132A1 (en) * | 2017-04-18 | 2018-10-25 | 上海蔚来汽车有限公司 | Electric vehicle and active discharge module, drive apparatus and electric drive system thereof |
| CN109995306A (en) * | 2017-12-29 | 2019-07-09 | 郑州宇通客车股份有限公司 | A kind of electric machine controller discharge control method and device |
| CN108819719A (en) * | 2018-05-03 | 2018-11-16 | 开沃新能源汽车集团有限公司 | A kind of charging method and device of motor controller of new energy automobile |
| CN108819719B (en) * | 2018-05-03 | 2022-02-15 | 开沃新能源汽车集团有限公司 | Discharging method and device for motor controller of new energy automobile |
| CN110492459A (en) * | 2018-05-15 | 2019-11-22 | 广州小鹏汽车科技有限公司 | A kind of high-voltage discharge method, device and motor |
| CN110722988A (en) * | 2018-06-28 | 2020-01-24 | 长城汽车股份有限公司 | Discharge control circuit and initiative discharge circuit of electric capacity in machine controller |
| CN113015649A (en) * | 2018-08-03 | 2021-06-22 | 美达系统有限公司 | Active discharge system for electric or hybrid vehicle |
| CN109921772A (en) * | 2019-04-19 | 2019-06-21 | 骆驼集团武汉光谷研发中心有限公司 | A kind of input signal holding circuit |
| CN109921772B (en) * | 2019-04-19 | 2023-12-15 | 骆驼集团武汉光谷研发中心有限公司 | Input signal holding circuit |
| CN110228395A (en) * | 2019-06-14 | 2019-09-13 | 上海蔚来汽车有限公司 | Two-supply circuit system |
| CN110228395B (en) * | 2019-06-14 | 2024-04-19 | 上海蔚来汽车有限公司 | Dual power supply circuit system |
| CN111934528A (en) * | 2020-09-25 | 2020-11-13 | 安徽鸿创新能源动力有限公司 | New energy automobile high pressure control circuit that releases |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106347170B (en) | 2018-09-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106347170A (en) | Active discharging circuit of motor controller for electric automobile | |
| CN202957763U (en) | Discharge circuit for inverter | |
| CN101888109B (en) | Storage battery charge control circuit adopting two-way reverse connecting protection | |
| CN202602326U (en) | Charger with over-voltage protection | |
| CN203056953U (en) | Driver and bus capacitor discharge circuit thereof | |
| CN103606895B (en) | A kind of overvoltage turn-off protection circuit | |
| CN201750190U (en) | Power supplying, surge preventing and pre-unloading device of power battery pack | |
| CN204190374U (en) | A kind of DC power supply anti-surge protection circuit | |
| CN104218558B (en) | Anti-surging high tension protection circuit | |
| CN103346553B (en) | Anti-reverse and the anti-relay coil short-circuit control circuit of a kind of electronic controller | |
| CN105048422A (en) | Switch transistor voltage drop holding circuit and application of switch transistor voltage drop holding circuit in lithium battery protection circuit | |
| CN208257490U (en) | A kind of photovoltaic energy storage device | |
| CN201312113Y (en) | Over-voltage and under-voltage protection circuit for vehicle electrical appliance | |
| CN106560958A (en) | Low-power-consumption voltage protection circuit and gas meter | |
| CN201726176U (en) | Charge control circuit with bidirectional reverse connection protection for storage batteries | |
| CN103024973A (en) | LED (Light-Emitting Diode) lamp and overcurrent protection circuit thereof | |
| CN203859570U (en) | Temperature control protection type electric vehicle charging system | |
| CN204597553U (en) | A kind of electromagnetism balance-type battery protector | |
| CN203966976U (en) | A kind of direct current relay drive circuit | |
| CN203289174U (en) | Full-automatic large-power LED lamp power supply circuit | |
| CN207426665U (en) | Current transformer and its secondary side protective arrangement for limiting output voltage | |
| CN203839920U (en) | Plastic shell type residual current protector having remote residual current tripping alarm function | |
| CN203596603U (en) | Power supply control circuit | |
| CN205355781U (en) | Area is to ground short -circuit protection's high limit drive circuit | |
| CN205960779U (en) | P type monitoring formula switching power |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240115 Address after: 412005, No. 255 Tongxia Road, Tongtangwan Street, Shifeng District, Zhuzhou City, Hunan Province Patentee after: Hunan CRRC Times Electric Drive Technology Co.,Ltd. Address before: The age of 412001 in Hunan Province, Zhuzhou Shifeng District Road No. 169 Patentee before: ZHUZHOU CRRC TIMES ELECTRIC Co.,Ltd. |