CN109342941A - Relay detection device and detection method thereof - Google Patents
Relay detection device and detection method thereof Download PDFInfo
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- CN109342941A CN109342941A CN201811496074.3A CN201811496074A CN109342941A CN 109342941 A CN109342941 A CN 109342941A CN 201811496074 A CN201811496074 A CN 201811496074A CN 109342941 A CN109342941 A CN 109342941A
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- 238000001514 detection method Methods 0.000 title claims abstract description 47
- 239000003990 capacitor Substances 0.000 claims abstract description 16
- 230000002457 bidirectional effect Effects 0.000 claims abstract description 4
- 230000003111 delayed effect Effects 0.000 claims description 26
- 230000002441 reversible effect Effects 0.000 claims description 8
- 230000002159 abnormal effect Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 6
- 238000013461 design Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000007689 inspection Methods 0.000 description 2
- 230000002045 lasting effect Effects 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 1
- 230000005779 cell damage Effects 0.000 description 1
- 208000037887 cell injury Diseases 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
- G01R31/3271—Testing of circuit interrupters, switches or circuit-breakers of high voltage or medium voltage devices
- G01R31/3275—Fault detection or status indication
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
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- General Physics & Mathematics (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a relay detection device and a detection method thereof, wherein the relay detection device comprises a positive bus and a negative bus which are connected with a battery pack and a bidirectional converter, and the positive bus and the negative bus are respectively connected with a positive bus relay and a negative bus relay in series; the capacitor and the controller are arranged between the positive bus and the negative bus, a front end voltage measuring device is arranged on one side of the battery pack between the positive bus and the negative bus, a rear end voltage measuring device is arranged on one side of the bidirectional converter, two ends of the positive bus relay are connected in parallel with a branch circuit, and a charging relay and a resistor are connected in series on the branch circuit; the controller judges whether the positive bus relay and the negative bus relay are invalid or not according to the voltages of the front end and the rear end; if short circuit or open circuit occurs, the alarm is given immediately, the state of the relay can be pre-judged in advance, and the battery damage or the influence on the service life of the battery caused by failure is prevented; the method has the advantages of reliable detection, high automation degree and lower cost.
Description
Technical field
The present invention relates to battery management system more particularly to a kind of electric relay detection device and its detection methods.
Background technique
In battery management system, high-voltage relay as connection battery pack with two-way DC/DC converter important tie,
Play the role of the important function for cutting off battery pack when charging buffering and failure, can normally play, have benefited from high-voltage relay
It can work normally, and high-voltage relay has design opening/closing frequency and service life, whether high-voltage relay is working properly
Entire battery system is directly influenced, therefore battery management system high-voltage relay failure detection is particularly important.Existing inspection
Survey method is at high cost mainly using the high-voltage relay with auxiliary contact come acknowledgement state, and cannot effectively judge high pressure
Relay time of day.
Therefore, how to design a kind of detection device that can automatically, reliably detect battery management system relay and
Its detection method is industry technical problem urgently to be resolved.
Summary of the invention
In order to solve the problems, such as that existing detection method is at high cost and cannot effectively judge high-voltage relay time of day,
The present invention proposes a kind of detection device and its detection method that can automatically, reliably detect battery management system relay.
The technical solution adopted by the present invention is that designing a kind of electric relay detection device, comprising: connection battery pack and two-way change
The positive and negative electrode bus of parallel operation is serially connected with positive pole line relay and negative busbar relay on the positive and negative electrode bus respectively；Setting
Capacitor and a controller between the positive and negative anodes bus, battery pack side is equipped with front end electricity between the positive and negative electrode bus
Pressure measuring device, reversible transducer side are equipped with rear end voltage measuring apparatus, and positive pole line relay both ends are parallel with one
Road, the branch road are in series with a charge relay and a resistance.
The reversible transducer uses two-way DC converter.
The present invention also designs a kind of detection method of above-mentioned electric relay detection device, controls positive bus-bar relay respectively
The on-off of device, negative busbar relay and charge relay makes battery pack, each relay and capacitor constitute multiple charge circuits and put
Electrical circuit judges whether relay fails by the front voltage and rear end voltage after detection charge and discharge.
The detection method, comprising the following steps: step 10. is closed charge relay and negative busbar relay, judgement
Negative busbar relay whether fail by open circuit；Step 20. disconnects negative busbar relay, judges negative busbar relay whether lose by short circuit
Effect；Step 30. first disconnects charge relay, then be closed negative busbar relay and closure charge relay, then disconnect charging after
Electric appliance, judge positive pole line relay whether short-circuit failure；Step 40. is first closed charge relay, is then closed positive bus-bar relay
Device and disconnection charge relay, judging positive pole line relay, whether open circuit is failed.
The step 10 includes: step 11. closure charge relay and negative busbar relay, and be delayed a period T1；
Step 12. judges whether rear end voltage is greater than A times of front voltage, is such as not more than, then issues negative busbar relay open circuit failure
Fault warning such as larger than then goes to step 20.
The step 20 includes: that step 21. disconnects negative busbar relay, and be delayed a period T2；Before step 22. judgement
Whether end voltage is greater than rear end voltage plus B value, is such as not more than, then issues the fault warning of negative busbar relay short-circuit failure,
Such as larger than, then 30 are gone to step.
The step 30 includes: that step 31. disconnects charge relay, and be delayed a period T3；The negative mother of step 32. closure
Line relay is closed charge relay, and be delayed a period T4；Step 33. disconnects charge relay, is delayed a period
T5；Step 34. judges whether front voltage is greater than rear end voltage plus a C value, is such as not more than, then issues positive pole line relay
The fault warning of short-circuit failure such as larger than then goes to step 40.
The step 40 includes: step 41. closure charge relay, and be delayed a period T6；Step 42. is closed positive pole
Line relay disconnects charge relay, and be delayed a period T7；Step 43. judges whether rear end voltage is greater than front voltage
E times, such as it is not more than, then the fault warning for issuing positive pole line relay open circuit failure such as larger than then detects completion.
Before carrying out the step 10, first judges whether front voltage is greater than preset value, be such as not more than, then issue battery
Group input abnormal failure alarm, such as larger than, then goes to step 10.
The T1 is 4 seconds, and described A times is 0.78 times.The T2 is 2 seconds, and the B value is 20 volts.The T3 is 12
Second, the T4 is 1 second, and the T5 is 2 seconds, and the C value is 20 volts.The T6 is 4 seconds, and the T7 is 2 seconds, institute
Stating E times is 0.95 times.
The preset value is 250 volts.
Compared with prior art, the present invention confirms high-voltage relay by logic of propositions before battery management system starting
State, if any short circuit or open circuit failure alert immediately；By fault alarm logic, the shape of high-voltage relay is prejudged in advance
State prevents because failure leads to cell damage or influences battery life；Reliable, the high degree of automation with detection, cost compared with
Low advantage.
Detailed description of the invention
Below with reference to embodiment and attached drawing, the present invention is described in detail, in which:
Fig. 1 is preferred embodiment detection device hardware block diagram；
Fig. 2 is relay status figure when judging negative busbar relay open circuit failure；
Fig. 3 is relay status figure when judging negative busbar relay short-circuit failure；
Fig. 4 is relay status figure when judging positive pole line relay short-circuit failure；
Fig. 5 is relay status figure when judging positive pole line relay open circuit failure；
Fig. 6 is preferred embodiment detection method flow chart.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is described in further detail.It should be appreciated that specific embodiment described herein is used only for explaining the present invention, not
For limiting the present invention.
The present invention is directed to design a kind of battery management system high-voltage relay abatement detecting method, before normal work first
Carry out relay test program.Its core is first to acquire the voltage before and after high-voltage relay, and combines specific folding logic
Judge whether high-voltage relay there are failure conditions, if any failure conditions alarming processing, if relay is normal, then battery management system
System works normally.
The invention discloses a kind of electric relay detection devices, referring to hardware block diagram shown in fig. 1 comprising connection electricity
The positive and negative electrode bus of pond group and reversible transducer, be serially connected on the positive and negative electrode bus respectively positive pole line relay RLY_P and
Negative busbar relay RLY_N；Capacitor C and a controller between the positive and negative anodes bus be set, the positive and negative electrode bus it
Between battery pack side be equipped with front voltage measuring device, reversible transducer side be equipped with rear end voltage measuring apparatus, the positive pole
Line relay both ends are parallel with a branch, and the branch road is in series with a charge relay RLY_C and a resistance R.The control
Device controls positive and negative bus relay coil respectively and charge relay coil is powered and power-off, is filled according to front and back ends voltage measurement
The front voltage and rear end voltage for setting feedback judge whether positive and negative bus relay fails.It is described positive and negative in the preferred embodiment
Bus relay contact and charge relay contact all use normally opened contact.The reversible transducer is converted using bidirectional, dc
Device.
Referring to Fig. 1, reversible transducer connects external circuit, external electric energy can be transformed into direct current, then pass through direct current
Bus is stored into battery pack, the transformation of electrical energy in battery pack can also be sent to outside at direct current, realized charging with contrary operation
And discharge operation.The capacitor C that positive electrode bus is connected with negative electrode bus, there is energy storage and filtering.The control of positive pole line relay
The folding of battery pack positive output, negative busbar relay control the output folding of battery pack negative busbar, and charge relay controls the throwing of resistance
It cuts, charging current when resistance limitation detects, controller obtains the voltage of relay front and back end by sampling, and is sentenced by logic
The state of disconnected relay.
The invention discloses the detection methods of above-mentioned electric relay detection device, control positive pole line relay, negative mother respectively
The on-off of line relay and charge relay makes battery pack, each relay and capacitor constitute multiple charge circuits and discharge loop,
By the front voltage and rear end voltage after detection charge and discharge, judge whether relay fails.
In the preferred embodiment, the detection method, comprising the following steps: step 10. is closed charge relay and bears
Bus relay, judging negative busbar relay, whether open circuit is failed；Step 20. disconnect negative busbar relay, judge negative busbar after
Electric appliance whether short-circuit failure；Step 30. first disconnects charge relay, is then closed negative busbar relay and closure charging relay
Device, then disconnect charge relay, judge positive pole line relay whether short-circuit failure；Step 40. is first closed charge relay, then
It is closed positive pole line relay and disconnects charge relay, judging positive pole line relay, whether open circuit is failed.
Referring to the flow diagram of the preferred embodiment shown in Fig. 6, the step 10 includes: step 11. closure charging relay
Device and negative busbar relay, be delayed a period T1；Step 12. judges whether rear end voltage is greater than A times of front voltage, if not
It is greater than, then the fault warning for issuing negative busbar relay open circuit failure such as larger than then goes to step 20.
The step 20 includes: that step 21. disconnects negative busbar relay, and be delayed a period T2；Before step 22. judgement
Whether end voltage is greater than rear end voltage plus B value, is such as not more than, then issues the fault warning of negative busbar relay short-circuit failure,
Such as larger than, then 30 are gone to step.
The step 30 includes: that step 31. disconnects charge relay, and be delayed a period T3；The negative mother of step 32. closure
Line relay is closed charge relay, and be delayed a period T4；Step 33. disconnects charge relay, is delayed a period
T5；Step 34. judges whether front voltage is less than rear end voltage plus a C value, is such as not less than, then issues positive pole line relay
The fault warning of short-circuit failure such as less than then goes to step 40.
The step 40 includes: step 41. closure charge relay, and be delayed a period T6；Step 42. is closed positive pole
Line relay disconnects charge relay, and be delayed a period T7；Step 43. judges whether rear end voltage is greater than front voltage
E times, such as it is not more than, then the fault warning for issuing positive pole line relay open circuit failure such as larger than then detects completion.
Before carrying out the step 10, first judges whether front voltage is greater than preset value (step 0), be such as not more than, then
Battery pack input abnormal failure alarm is issued, such as larger than, then goes to step 10.
In the preferred embodiment, the T1 is 4 seconds, and described A times is 0.78 times.The T2 is 2 seconds, and the B value is
20 volts.The T3 is 12 seconds, and the T4 is 1 second, and the T5 is 2 seconds, and the C value is 20 volts.The T6 is 4 seconds,
The T7 is 2 seconds, and described E times is 0.95 times.
In the preferred embodiment, the preset value is 250 volts.
Below in conjunction with relay status figure, the testing principle of preferred embodiment is described in detail: before the examination begins, each relay
State as shown in Figure 1, not stored charge method value in capacitor C, ignore by the voltage on DC bus.
Inspection starts to execute S0, first judges whether front voltage is greater than 250V, is such as not more than, then issues battery pack input
Abnormal failure alarm such as larger than then executes S11, is closed the contact of charge relay and negative busbar relay, is delayed 4 seconds so
After jump in next step judged.Relay status is as shown in Fig. 2, execute S12, before judging whether rear end voltage is greater than at this time
Hold 0.78 times of voltage, the fault warning of negative busbar relay open circuit failure issued if being not more than, if it is greater than if jump
To in next step.Testing principle is: if negative busbar relay is normal, battery pack is closed in negative busbar relay and charge relay
After establish normal discharge path, then the electric energy of battery gives output capacitance C charging, so that output capacitance is established voltage, and according to
Charging curve, voltage can reach 0.78 times of VLINK after the 4S that is delayed, and such as Voltage Establishment exception, then can not form access, capacitor without
Method charges, and can not detect effective voltage.
Then S21 is executed, the contact of negative busbar relay is disconnected, delay then branches to for 2 seconds to be judged in next step.
Relay status is as shown in figure 3, execute S22 at this time: judging whether front voltage is greater than rear end voltage plus 20 volts, if less
In the fault warning for then issuing negative busbar relay short-circuit failure, if it is greater than then jumping in next step.Testing principle is: disconnecting
After negative busbar relay contact, if output capacitance C loses lasting energy supply and switchs to power consumption without short-circuit failure, by discharge curve,
2S delay after at least can output capacitance fall 20V；If negative busbar relay contact short-circuit failure, output capacitance C continues
Energy supply, voltage remain unchanged, do not have and fall phenomenon, judge whether there is exception according to this feature.
Then S31 is executed, charge relay is disconnected, delay then branches in next step for 12 seconds, and S32 is closed negative busbar
Relay, is closed charge relay, and delay then branches in next step for 1 second；S33 disconnect charge relay, be delayed one when
Between section then branch in next step judged.Relay status is as shown in figure 4, whether execution S34, judge front voltage at this time
20 volts are added greater than rear end voltage, the fault warning of positive pole line relay short-circuit failure is issued if being not more than, if it is greater than
It then jumps in next step.Testing principle is: closure negative busbar relay, and after being closed charge relay, it is logical to establish normal charging
Road, capacitor C can charge and establish voltage at this time, disconnect charge relay at this time, if the non-short-circuit failure of positive pole line relay,
Capacitor C loses stable energy supply after disconnecting charge relay, generates Voltage Drop because of power consumption；If short-circuit failure, capacitor C
Voltage stabilization is kept because of lasting charging, Voltage Drop will not be generated.
Then S41 is executed, charge relay is closed, the period that is delayed then branches in next step；S42, closure is just
Bus relay disconnects charge relay, and the period that is delayed then branches to be judged in next step.Relay shape at this time
State judges whether rear end voltage is greater than 0.95 times of front voltage as shown in figure 5, execution S43, issues positive pole if being not more than
The fault warning of line relay open circuit failure, if it is greater than then detecting completion.Battery management system, which can enter, to be worked normally.Detection
Principle is: after closure positive pole line relay, if failed without open circuit, capacitor C can be because of battery pack charging and voltage increases；If
Open circuit failure, capacitor C can not charge, can whether there is or not charging voltage judges positive pole line relay with the presence or absence of open circuit by capacitor
Failure.
It may be noted that in the preferred embodiment, the branch that the charge relay RLY_C and resistance R are constituted is to be connected in parallel on
The both ends positive pole line relay RLY_P.As a kind of transformation, the branch can also be parallel to the both ends negative busbar relay RLY_N.
When detection, controller need to only be exchanged the instruction for controlling positive pole line relay RLY_P and control negative busbar relay RLY_N i.e.
It can.For example, being originally that the instruction of control positive pole line relay closure is changed to control negative busbar relay closure, it is originally that control is negative
The instruction of bus relay closure is changed to control positive pole line relay closure.
Above embodiments are by way of example only, non-to provide constraints.It is any without departing from the application spirit and scope, and to it
The equivalent modifications or change of progress, shall be included in the scope of claims of this application.
Claims (14)
1. a kind of electric relay detection device, comprising: the positive and negative electrode bus of connection battery pack and reversible transducer, the positive and negative electrode
Positive pole line relay and negative busbar relay are serially connected on bus respectively；Capacitor and one between the positive and negative anodes bus is set
Controller, which is characterized in that battery pack side is equipped with front voltage measuring device, two-way changing between the positive and negative electrode bus
Device side is equipped with rear end voltage measuring apparatus, and positive pole line relay both ends are parallel with a branch, and the branch road is in series with
One charge relay and a resistance.
2. electric relay detection device as described in claim 1, which is characterized in that the reversible transducer is become using bidirectional, dc
Parallel operation.
3. a kind of detection method of electric relay detection device of any of claims 1 or 2, which is characterized in that control positive pole respectively
The on-off of line relay, negative busbar relay and charge relay makes battery pack, each relay and capacitor constitute multiple charge back
Road and discharge loop judge whether relay fails by the front voltage and rear end voltage after detection charge and discharge.
4. detection method as claimed in claim 3, which comprises the following steps:
Step 10. is closed charge relay and negative busbar relay, and judging negative busbar relay, whether open circuit is failed；
Step 20. disconnect negative busbar relay, judge negative busbar relay whether short-circuit failure；
Step 30. first disconnects charge relay, then be closed negative busbar relay and closure charge relay, then disconnect charging after
Electric appliance, judge positive pole line relay whether short-circuit failure；
Step 40. is first closed charge relay, then be closed positive pole line relay and disconnect charge relay, judge positive bus-bar after
Electric appliance whether fail by open circuit.
5. detection method as claimed in claim 4, which is characterized in that the step 10 includes:
Step 11. is closed charge relay and negative busbar relay, and be delayed a period T1；
Step 12. judges whether rear end voltage is greater than A times of front voltage, is such as not more than, then issues negative busbar relay open circuit mistake
The fault warning of effect such as larger than then goes to step 20.
6. detection method as claimed in claim 4, which is characterized in that the step 20 includes:
Step 21. disconnects negative busbar relay, and be delayed a period T2；
Step 22. judges whether front voltage is greater than rear end voltage plus B value, is such as not more than, then it is short to issue negative busbar relay
The fault warning of road failure such as larger than then goes to step 30.
7. detection method as claimed in claim 4, which is characterized in that the step 30 includes:
Step 31. disconnects charge relay, and be delayed a period T3；
Step 32. is closed negative busbar relay, is closed charge relay, be delayed a period T4；
Step 33. disconnects charge relay, and be delayed a period T5；
Step 34. judges whether front voltage is greater than rear end voltage plus a C value, is such as not more than, then issues positive bus-bar relay
The fault warning of device short-circuit failure such as larger than then goes to step 40.
8. detection method as claimed in claim 4, which is characterized in that the step 40 includes:
Step 41. is closed charge relay, and be delayed a period T6；
Step 42. is closed positive pole line relay, disconnects charge relay, be delayed a period T7；
Step 43. judges whether rear end voltage is greater than E times of front voltage, is such as not more than, then issues positive pole line relay open circuit mistake
The fault warning of effect such as larger than then detects completion.
9. detection method as claimed in claim 4, which is characterized in that before carrying out the step 10, first judge front end electricity
Whether pressure is greater than preset value, is such as not more than, then issues battery pack input abnormal failure alarm, such as larger than, then go to step 10.
10. detection method as claimed in claim 5, which is characterized in that the T1 is 4 seconds, and described A times is 0.78 times.
11. detection method as claimed in claim 6, which is characterized in that the T2 is 2 seconds, and the B value is 20 volts.
12. detection method as claimed in claim 7, which is characterized in that the T3 is 12 seconds, and the T4 is 1 second, described
T5 is 2 seconds, and the C value is 20 volts.
13. detection method as claimed in claim 8, which is characterized in that the T6 is 4 seconds, and the T7 is 2 seconds, the E
It is again 0.95 times.
14. detection method as claimed in claim 9, which is characterized in that the preset value is 250 volts.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811496074.3A CN109342941A (en) | 2018-12-07 | 2018-12-07 | Relay detection device and detection method thereof |
| PCT/CN2019/100127 WO2020113991A1 (en) | 2018-12-07 | 2019-08-12 | Relay detection apparatus and detection method therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811496074.3A CN109342941A (en) | 2018-12-07 | 2018-12-07 | Relay detection device and detection method thereof |
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| CN109342941A true CN109342941A (en) | 2019-02-15 |
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| CN201811496074.3A Pending CN109342941A (en) | 2018-12-07 | 2018-12-07 | Relay detection device and detection method thereof |
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| CN (1) | CN109342941A (en) |
| WO (1) | WO2020113991A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020113991A1 (en) * | 2018-12-07 | 2020-06-11 | 珠海格力电器股份有限公司 | Relay detection apparatus and detection method therefor |
| CN111337823A (en) * | 2020-04-23 | 2020-06-26 | 科华恒盛股份有限公司 | Relay failure detection device and method |
| CN112165259A (en) * | 2020-10-09 | 2021-01-01 | 阳光电源股份有限公司 | Bidirectional DCDC converter and slow start control method |
| CN116400214A (en) * | 2023-06-07 | 2023-07-07 | 杭州华塑科技股份有限公司 | Switch fault detection system and detection method |
| WO2024092495A1 (en) * | 2022-11-01 | 2024-05-10 | 宁德时代新能源科技股份有限公司 | Status detection method for switch module, circuit, device, and storage medium |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150035539A1 (en) * | 2013-08-02 | 2015-02-05 | Jtekt Corporation | Power circuit abnormality detection method |
| CN104553813A (en) * | 2014-12-16 | 2015-04-29 | 惠州市亿能电子有限公司 | Electric automobile high-voltage power-on circuit and control method thereof |
| CN105128688A (en) * | 2015-09-06 | 2015-12-09 | 重庆长安汽车股份有限公司 | Electric vehicle start control method and system |
| CN105871026A (en) * | 2016-05-20 | 2016-08-17 | 广州汽车集团股份有限公司 | Precharging device for electric vehicle and precharging method of precharging device |
| CN106427619A (en) * | 2016-09-22 | 2017-02-22 | 奇瑞汽车股份有限公司 | Battery system, electrifying method and device |
| CN106842005A (en) * | 2016-12-27 | 2017-06-13 | 惠州市蓝微新源技术有限公司 | A kind of relay fault judgment method of electric automobile high-voltage system |
| CN107031410A (en) * | 2017-04-07 | 2017-08-11 | 惠州市亿能电子有限公司 | A kind of electric vehicle pre-charging circuit and its method for diagnosing faults |
| CN108761324A (en) * | 2018-06-15 | 2018-11-06 | 爱驰汽车有限公司 | The diagnostic method and device of the high-voltage relay functional response failure of battery pack |
| CN108859762A (en) * | 2017-05-08 | 2018-11-23 | 华晨汽车集团控股有限公司 | A kind of control system and detection method of power cells for new energy vehicles relay |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105021983B (en) * | 2015-07-15 | 2017-10-24 | 惠州市亿能电子有限公司 | A kind of battery management system power-on and power-off relay test method |
| CN105548892B (en) * | 2015-12-02 | 2018-09-18 | 北京新能源汽车股份有限公司 | Fault detection system, method and device of battery system and electric vehicle |
| CN109342941A (en) * | 2018-12-07 | 2019-02-15 | 珠海格力电器股份有限公司 | Relay detection device and detection method thereof |
-
2018
- 2018-12-07 CN CN201811496074.3A patent/CN109342941A/en active Pending
-
2019
- 2019-08-12 WO PCT/CN2019/100127 patent/WO2020113991A1/en active Application Filing
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150035539A1 (en) * | 2013-08-02 | 2015-02-05 | Jtekt Corporation | Power circuit abnormality detection method |
| CN104553813A (en) * | 2014-12-16 | 2015-04-29 | 惠州市亿能电子有限公司 | Electric automobile high-voltage power-on circuit and control method thereof |
| CN105128688A (en) * | 2015-09-06 | 2015-12-09 | 重庆长安汽车股份有限公司 | Electric vehicle start control method and system |
| CN105871026A (en) * | 2016-05-20 | 2016-08-17 | 广州汽车集团股份有限公司 | Precharging device for electric vehicle and precharging method of precharging device |
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