CN106627156A - High-voltage information acquisition controller - Google Patents
High-voltage information acquisition controller Download PDFInfo
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- CN106627156A CN106627156A CN201610974673.6A CN201610974673A CN106627156A CN 106627156 A CN106627156 A CN 106627156A CN 201610974673 A CN201610974673 A CN 201610974673A CN 106627156 A CN106627156 A CN 106627156A
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- 238000001514 detection method Methods 0.000 claims abstract description 18
- 239000003054 catalyst Substances 0.000 claims description 76
- 238000002955 isolation Methods 0.000 claims description 16
- 230000006378 damage Effects 0.000 description 6
- 230000005611 electricity Effects 0.000 description 5
- 238000012544 monitoring process Methods 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 208000033999 Device damage Diseases 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008713 feedback mechanism Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
Classifications
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- 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
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
- B60L3/0084—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to control modules
-
- 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
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
The invention provides a high-voltage information acquisition controller. The high-voltage information acquisition controller comprises a power circuit, a switching quantity acquisition unit, an analog quantity acquisition unit, a power output unit, a high-voltage acquisition unit, a CAN circuit and an MCU circuit. The high-voltage information acquisition controller can directly acquire voltages across the two ends of a pre-charge contactor, and the voltages serve as necessary conditions for judging that pre-charge is completed. The high-voltage information acquisition controller can acquire input and output side voltages of high-voltage contactors such as the total positive contactor, the total negative contactor and the charge contactor and judge the states of the high-voltage contactors to achieve the purpose of protecting the contactors and relevant parts. The high-voltage information acquisition controller integrates part of functions of a vehicle control unit and can serve as an independent controller to control a whole vehicle. The high-voltage information acquisition controller integrates a current detection function and achieves detection of bus currents.
Description
Technical field
A kind of high pressure information gathering controller（ICS）Belong to electric automobiles.
Background technology
At present the catalyst feedback in pure electric automobile in distribution system adopts mechanical feedback, Publication No.
A kind of electric motor car VCU management systems of CN205485396U, the catalyst feedback in distribution system uses mechanical feedback, by
Then mechanical type contact, so error is larger, the life-span is shorter.In addition in precharge control logic, need to gather preliminary filling two ends
Voltage, and it, by electric machine controller and battery management system feedack, is not directly collection that now these information are all
Information, if the two nodes go wrong, the device damages such as electric machine controller can be caused, thus increase high pressure information gathering
Controller（ICS）It is necessary.
The content of the invention
For an above-mentioned difficult problem, the present invention proposes a kind of high pressure information gathering controller, solves existing catalyst machinery
The defect of formula feedback, limits in theory without the life-span, and relatively reliable.Solve the hidden danger in preliminary filling electric control, high pressure letter
Breath acquisition controller can directly gather the voltage at preliminary filling catalyst two ends, used as judging the essential condition that preliminary filling is completed.High pressure
Information gathering controller is also integrated with the partial function of entire car controller, such as switch acquisition, current signal collection, power output
With CAN bus circuit etc., the control of car load can be realized as independent controller.
A kind of high pressure information gathering controller, including power circuit, switch acquisition, analog acquisition, power output is high
Pressure collection, CAN circuit, MCU circuits, the high pressure information gathering controller can directly gather preliminary filling catalyst both end voltage,
Used as judging the essential condition that preliminary filling is completed, used as judging the essential condition that preliminary filling is completed, the high-voltage acquisition controller can be with
The total positive catalyst of collection, the input of total negative high voltage connector such as catalyst and charging contactor and outlet side voltage, judge high pressure
The state of catalyst, reaches the purpose of protection catalyst and associated components, and the high pressure information gathering controller is integrated with car load
The partial function of controller, can realize the control of car load as independent controller, and the high-voltage acquisition controller is integrated with
Current sense function, realizes the detection to bus current.
Preferably, the MCU circuits are the cores of high pressure information gathering controller, and controlling power circuit, switching value are adopted
Collector, analog quantity acquisition circuit, power output circuit, high-voltage acquisition circuit and CAN circuit.
In any of the above-described scheme preferably, the power circuit turns 5V power supply V1 and 5V and turns 5V including two parts 24V
Power supply V2.
In any of the above-described scheme preferably, it is that the MCU circuits and the CAN circuit, analog quantity are adopted that the V1 is
The 5V power supplys that collection and switch acquisition are provided.
In any of the above-described scheme preferably, the V2 is powered for the isolation amplifier in high-voltage acquisition circuit, by height
Pressure Acquisition Circuit is isolated with low-pressure system, isolation voltage 3000V.
In any of the above-described scheme preferably, the V2 divide into 6 independent insulating power supplies, make each high-voltage acquisition
Circuit is separate.
In any of the above-described scheme preferably, 6 independent insulating power supplies are powered for isolation amplifier, non-isolated electricity
Source powers for common amplifier.
In any of the above-described scheme preferably, the signal of the switch acquisition is divided into high effectively On-off signal and low
Effective On-off signal, such as catalyst feedback and wake-up signal.
In any of the above-described scheme preferably, the signal of the analog acquisition is divided into resistance-type and voltage-type signal is defeated
Enter, such as pedal opening signal, current signal and temperature signal.
In any of the above-described scheme preferably, the power output is flash output, main to drive catalyst and conduct
Each node rigid line enables signal.
In any of the above-described scheme preferably, the high-voltage acquisition is combined using isolation amplifier and common amplifier, is made
Low pressure controller circuit is in isolation relative to high-voltage acquisition circuit, it is to avoid because the interference of high-pressure system is incorporated into low pressure
Control system, causes low pressure controller system failure.
In any of the above-described scheme preferably, in the circuit running of the high-voltage acquisition, high pressure to be measured is through resistance point
After pressure, amplify through isolation amplifier, export and low-pressure system voltage signal altogether, after common amplifier is amplified institute is linked into
MCU circuits are stated, high pressure detection is completed.
In any of the above-described scheme preferably, the high pressure 1 in the circuit of the high-voltage acquisition to each road high pressure of high pressure 6 can
Being the high pressure of same reference ground or the one kind in the high pressure of different reference ground.
In any of the above-described scheme preferably, the CAN circuit adopts integrated CAN transceiving chips, and through common mode,
Differential mode and ESD electrostatic defendings are processed.
In any of the above-described scheme preferably, the entire car controller partial function, using the hardware of entire car controller
System and controller logic.
In any of the above-described scheme preferably, the entire car controller partial function, increases high-voltage acquisition function, realizes
The positive catalyst adhesion of master judges, the judgement that master bears catalyst adhesion judgement, charging contactor adhesion judges and precharge is completed.
In any of the above-described scheme preferably, high pressure test point is installed on high pressure by the high pressure information gathering controller
The two ends of catalyst, such as preliminary filling catalyst, always total positive catalyst, negative catalyst and charging contactor.
In any of the above-described scheme preferably, the high pressure information gathering controller is connected to On-off signal holding wire
Each catalyst feedback line.
In any of the above-described scheme preferably, the high pressure information gathering controller is connected to analog input signal respectively
Monitoring point feedback line, such as temperature sensor feedback and current sensor feed back.
In any of the above-described scheme preferably, power output is connected to each catalyst by the high pressure information gathering controller
Low-voltage coil.
In any of the above-described scheme preferably, CAN circuit line is connected to car load CAN by the high pressure information gathering controller
On circuit line.
The invention has the beneficial effects as follows：High pressure information gathering controller judges that whether catalyst adhesion and provides reliable
Feedback, so doing on Node Protection in place, reduces security incident；In precharge logical, entire car controller is to need to sentence
The voltage difference at disconnected preliminary filling two ends in the rational scope in the case of the positive catalyst of ability adhesive master, if the information of voltage of feedback
It is wrong, the nodes such as electric machine controller can be caused to damage, cause damage and accident, and high pressure information gathering controller reduces this side
The error probability in face, because controller directly gathers the voltage at relay two ends, information is closer to equipment under test, if equipment is straight
In the case of connecing by high pressure information gathering controller plc, information is sent directly to without going past bus transfer or processing
MCU, so can be relatively reliable.
Description of the drawings
Fig. 1 according to the present invention high pressure information gathering controller ICS structures a preferred embodiment block diagram；
Fig. 2 is preferred real according to one of high-voltage acquisition circuit topology of the ICS structures of the high pressure information gathering controller of the present invention
Apply a structured flowchart；
Fig. 3 according to the present invention high pressure information gathering controller ICS structures a preferred embodiment electric motor car high-tension electricity
Lu Tu.
Specific embodiment
In order that the objects, technical solutions and advantages of the present invention become more apparent, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that specific embodiment described herein is only to explain the present invention, not
For limiting the present invention.
As shown in figure 1, a kind of high pressure information gathering controller, including power circuit, switch acquisition, analog acquisition,
Power output, high-voltage acquisition, CAN circuit, MCU circuits, the high pressure information gathering controller can directly gather preliminary filling contact
Device both end voltage, as judging the essential condition that preliminary filling is completed, as judging the essential condition that preliminary filling is completed, the high-voltage acquisition
Controller can gather total positive catalyst, the input of total negative high voltage connector such as catalyst and charging contactor and outlet side electricity
Pressure, judges the state of high voltage connector, reaches the purpose of protection catalyst and associated components, the high pressure information gathering controller
The partial function of entire car controller is integrated with, the control of car load, the high-voltage acquisition control can be realized as independent controller
Device processed is integrated with current sense function, realizes the detection to bus current.
In the present embodiment, the MCU circuits are the cores of high pressure information gathering controller, controlling power circuit, switch
Amount Acquisition Circuit, analog quantity acquisition circuit, power output circuit, high-voltage acquisition circuit and CAN circuit.
In the present embodiment, the power circuit turns 5V power supply V1 and 5V and turns 5V power supply V2 including two parts 24V.
In the present embodiment, it is that the MCU circuits and the CAN circuit, analog acquisition and switching value are adopted that the V1 is
The 5V power supplys that collection is provided.
In the present embodiment, the V2 is powered for the isolation amplifier in high-voltage acquisition circuit, by high-voltage acquisition circuit with
Low-pressure system is isolated, isolation voltage 3000V.
In the present embodiment, the V2 divide into 6 independent insulating power supplies, make each high-voltage acquisition circuit mutually only
It is vertical.
In the present embodiment, 6 independent insulating power supplies are powered for isolation amplifier, and non-isolated power supply is common amplifier
Power supply.
In the present embodiment, the signal of the switch acquisition is divided into high effective On-off signal and low effective switching value is defeated
Enter, such as catalyst feedback and wake-up signal.
In the present embodiment, the signal of the analog acquisition is divided into resistance-type and voltage-type signal input, and such as pedal is opened
Degree signal, current signal and temperature signal etc..
In the present embodiment, the power output is flash output, main to drive catalyst and make as each node rigid line
Can signal.
In the present embodiment, the CAN circuit adopts integrated CAN transceiving chips, and quiet through common mode, differential mode and ESD
Electric protective treatment.
In the present embodiment, the entire car controller partial function, using the hardware system and controller of entire car controller
Logic.
In the present embodiment, the entire car controller partial function, increases high-voltage acquisition function, realizes that the positive catalyst of master glues
Even judge, master bears catalyst adhesion judgement, the judgement that charging contactor adhesion judgement and precharge are completed.
As shown in Fig. 2 in the circuit of the high-voltage acquisition, high pressure to be measured is put after electric resistance partial pressure through isolation amplifier
Greatly, output and low-pressure system voltage signal altogether, are linked into MCU after common amplifier is amplified, and high pressure detection is completed.High pressure
The each road high pressure of 1 to high pressure 6 can be the high pressure of the high pressure of same reference ground, or different reference grounds, from 6 individually
Insulating power supply is exactly for this purpose.
As shown in figure 3, high pressure information gathering controller system detection high pressure, in figure 1 to 9 test point can arbitrarily connect,
Voltage of the voltage and total positive catalyst input stage if desired for detection charging contactor two ends to high-tension battery ground, then can be by high pressure
All the way positive and negative in collection is connected to test point 8 and 9, it is possible to test out the voltage at charging contactor two ends.In addition all the way
Positive pole is connected to test point 3, and negative pole is connected to test point 6.The reference ground of two voltages to be measured is different, charging contactor two ends electricity
The reference ground of pressure is 9, and the reference ground of total positive input step voltage is 6.The correspondence of point 9 high-tension batteries are can be seen that from Fig. 3 just
Pole, the negative poles of the correspondence high-tension batteries of point 6, two reference grounds just differ the voltage of a high-tension battery, if so routine
High pressure detection altogether can not meet existing demand.
Catalyst working condition confirms, because there is many high-voltage great-current catalysts in electric motor car high voltage distribution installation, one
The situation of damage occurs under fixed condition, such as catalyst adhesion, feedback signal is abnormal, needs a kind of reliable detection means
Confirm catalyst state.Principle is as follows：A, such as confirm total positive catalyst whether inhale and, choose high-voltage detecting circuit all the way, positive pole
Connect test point 4, negative pole connects test point 6, when catalyst inhale and after, it is consistent with high-tension battery both end voltage to put 4 voltages, such as not phase
Together, illustrate that high voltage connector is not inhaled with then car load strategy can be processed this case.B, such as need to confirm that total positive catalyst is
No disconnection, circuit connection is consistent with a parts, only needs the voltage of test point 4, and such as voltage is inconsistent with high-tension battery, illustrates always just to connect
Tentaculum normally disconnects, such as consistent, illustrates the possible adhesion of total positive catalyst, and at this moment car load strategy can be processed this case.
And present high voltage power distribution catalyst is all band feedback line, for feeding back catalyst state, its principle is mechanical contact,
If using high pressure information gathering controller high pressure detecting system, this feedback arrangement can be removed.
Precharge is reliably completed, pre-charge pressure in traditional precharge feedback be other nodes such as electric machine controller voluntarily
Detection, and by bus feedback, such as there is exception in these nodes or exception occurs in bus, then the precharge pressure type for feeding back is not
Accurately or can not send out, cause preliminary filling electrical anomaly.Enter horizontal high voltage detection with high pressure information gathering controller, by detection circuit just
Pole is connected to a little 5, and negative pole is connected to a little 6, then can accurately judge whether preliminary filling completes very much relative to the value of point by point 5.This
Condition can be used as judging the essential condition whether preliminary filling completes, redundancy error.
In the present embodiment, the high-voltage acquisition is combined using isolation amplifier and common amplifier, makes low pressure controller electricity
Road is in isolation relative to high-voltage acquisition circuit, it is to avoid because the interference of high-pressure system is incorporated into low voltage control system, make
Into low pressure controller system failure.
In the present embodiment, the high-voltage acquisition circuit running in, high pressure to be measured after electric resistance partial pressure, through isolation
Amplifier is amplified, and is exported and low-pressure system voltage signal altogether, and after common amplifier is amplified the MCU circuits are linked into, high
Pressure detection is completed.
In the present embodiment, the high pressure 1 in the circuit of the high-voltage acquisition to each road high pressure of high pressure 6 can be same reference
One kind in the high pressure of the high pressure on ground or different reference grounds.
In the present embodiment, high pressure test point is installed on the high pressure information gathering controller the two of high voltage connector
End, such as preliminary filling catalyst, always total positive catalyst, negative catalyst and charging contactor.
In the present embodiment, On-off signal holding wire is connected to each catalyst feedback by the high pressure information gathering controller
Line.
In the present embodiment, analog input signal is connected to each monitoring point feedback by the high pressure information gathering controller
Line, such as temperature sensor feedback and current sensor feed back.
In the present embodiment, power output is connected to the high pressure information gathering controller low-voltage coil of each catalyst.
In the present embodiment, the high pressure information gathering controller is connected to CAN circuit line on car load CAN circuit line.
The course of work of high pressure information gathering controller is as follows：
High pressure test point is installed on into the two ends of high voltage connector, such as preliminary filling catalyst, total positive catalyst, always negative catalyst and fill
Electric contactor etc.；On-off signal holding wire is connected to into each catalyst feedback line；Analog input signal is connected to into each monitoring point
Feedback line, such as temperature sensor feedback and current sensor feed back；Power output is connected to into the low-voltage coil of each catalyst；Will
CAN circuit line is connected on car load CAN circuit line.
After car load receives catalyst set to be instructed, high pressure information gathering controller is inhaled by power output and is corresponded to first
Catalyst, the feedback signal of On-off signal detection correspondence catalyst, the voltage at high-voltage detecting circuit detection relay two ends, when
The voltage at catalyst two ends is consistent and during effective catalyst feedback, it is believed that catalyst inhale and.When the knot for connecing high pressure detection
When the result of fruit and catalyst feedback is inconsistent, at this moment we judge that asking occur in catalyst feedback mechanism or high-voltage detecting circuit
Topic, is fed back by CAN lines to entire car controller.But, generally the probability of catalyst feedback destruction is bigger, because he
Principle is mechanical feedback, and the impact of the use environment such as vibrated and abrasion is very big.By high-voltage acquisition system, that is, increased
Failure tolerant, also can whether there is the foundation of problem as catalyst feedback is judged.
When high pressure information gathering controller receives the order for disconnecting catalyst, power output is invalid, at this moment catalyst
Can disconnect, whether the switching value catalyst feedback of high pressure information gathering controller disconnects, and is entered by high-voltage detecting circuit
Row judges whether catalyst really disconnects, if both phenomenons feedback is not consistent, catalyst may have two problems, unanimously
Catalyst feeds back failure, and another is catalyst adhesion.Empirically, second probability is very big.So increasing high pressure inspection
Slowdown monitoring circuit can accurately confirm whether catalyst really disconnects, and for car load correct input is provided, and as next step plan is controlled
Foundation slightly.
Equally, when high pressure information gathering controller high-voltage acquisition circuit is connected to the two ends of preliminary filling catalyst, then can determine whether pre-
Fill it is whether real complete, prevent the complete vehicle fault caused due to preliminary filling catalyst or the wrong report of other nodes, cause accident.
The invention has the beneficial effects as follows：High pressure information gathering controller judges that whether catalyst adhesion and provides reliable
Feedback, so doing on Node Protection in place, reduces security incident；In precharge logical, entire car controller is to need to sentence
The voltage difference at disconnected preliminary filling two ends in the rational scope in the case of the positive catalyst of ability adhesive master, if the information of voltage of feedback
It is wrong, the nodes such as electric machine controller can be caused to damage, cause damage and accident, and high pressure information gathering controller reduces this side
The error probability in face, because controller directly gathers the voltage at relay two ends, information is closer to equipment under test, if equipment is straight
In the case of connecing by high pressure information gathering controller plc, information is sent directly to without going past bus transfer or processing
MCU, so can be relatively reliable.
One embodiment of the present of invention has been described in detail above, but the content is only the preferable enforcement of the present invention
Example, it is impossible to be considered as the practical range for limiting the present invention.All impartial changes made according to the present patent application scope and improvement
Deng, all should still belong to the present invention patent covering scope within.
Claims (10)
1. a kind of high pressure information gathering controller, including power circuit, switch acquisition, analog acquisition, power output, high pressure
Collection, CAN circuit, MCU circuits, it is characterised in that：The high pressure information gathering controller can directly gather preliminary filling catalyst
Both end voltage, used as the essential condition that preliminary filling is completed is judged, the high-voltage acquisition controller can gather total positive catalyst, always bear
The input of the high voltage connector such as catalyst and charging contactor and outlet side voltage, judge the state of high voltage connector, reach guarantor
The purpose of shield catalyst and associated components, the high pressure information gathering controller is integrated with the partial function of entire car controller, can
Control to realize car load as independent controller, the high-voltage acquisition controller is integrated with current sense function, and it is right to realize
The detection of bus current.
2. high pressure information gathering controller according to claim 1, it is characterised in that：The MCU circuits are high pressure information
The core of acquisition controller, controlling power circuit, switch quantity acquisition circuit, analog quantity acquisition circuit, power output circuit, high pressure
Acquisition Circuit and CAN circuit.
3. high pressure information gathering controller according to claim 1, it is characterised in that：The power circuit includes two parts
24V turns 5V power supply V1 and 5V and turns 5V power supply V2.
4. high pressure information gathering controller according to claim 2, it is characterised in that：The V1 is for the MCU circuits
The 5V power supplys provided with the CAN circuit, the analog acquisition and the switch acquisition.
5. high pressure information gathering controller according to claim 2, it is characterised in that：The V2 is for high-voltage acquisition circuit
In isolation amplifier power, high-voltage acquisition circuit is isolated with low-pressure system, isolation voltage 3000V.
6. high pressure information gathering controller according to claim 2, it is characterised in that：The V2 divide into 6 it is independent
Insulating power supply, makes each high-voltage acquisition circuit separate.
7. high pressure information gathering controller according to claim 5, it is characterised in that：6 independent insulating power supplies
Power for isolation amplifier, non-isolated power supply is powered for common amplifier.
8. high pressure information gathering controller according to claim 1, it is characterised in that：The signal of the switch acquisition point
For high effectively On-off signal and low effective On-off signal.
9. high pressure information gathering controller according to claim 1, it is characterised in that：The signal of the analog acquisition point
For resistance-type and voltage-type signal input.
10. high pressure information gathering controller according to claim 1, it is characterised in that：The power output is that flash is defeated
Go out, it is main to drive catalyst and enable signal as each node rigid line.
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| CN201610974673.6A CN106627156A (en) | 2016-11-06 | 2016-11-06 | High-voltage information acquisition controller |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107621565A (en) * | 2017-10-23 | 2018-01-23 | 宁德时代新能源科技股份有限公司 | High voltage detection circuit, detector, battery device and vehicle |
| CN107867183A (en) * | 2017-10-24 | 2018-04-03 | 合肥禄正新能源科技有限公司 | A kind of high voltage power distributing cabinet contactor break-make judgment means and control method |
| CN108550757A (en) * | 2018-06-28 | 2018-09-18 | 桑顿新能源科技有限公司 | Power battery cutting unit |
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