CN106597274A - Contactor adhesion determination method - Google Patents
Contactor adhesion determination method Download PDFInfo
- Publication number
- CN106597274A CN106597274A CN201611249801.7A CN201611249801A CN106597274A CN 106597274 A CN106597274 A CN 106597274A CN 201611249801 A CN201611249801 A CN 201611249801A CN 106597274 A CN106597274 A CN 106597274A
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- Prior art keywords
- contactor
- voltage
- adhesion
- collection
- battery
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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
- G01R31/3277—Testing of circuit interrupters, switches or circuit-breakers of low voltage devices, e.g. domestic or industrial devices, such as motor protections, relays, rotation switches
Abstract
The invention relates to a contactor adhesion determination method. Through comparing difference of a cell set voltage and a voltage at the back of a main negative contactor with a first set value and comparing difference of the cell set voltage and a voltage at the back of a main positive contactor with a second set value, adhesion of a main negative contactor and adhesion of a main positive contactor are determined. The method is advantaged in that the principle is simple, the method is easy to realize, no extra system burden increases, and the cell set voltage and the voltage at the back of the main negative contactor acquired by a cell management system and the voltage at the back of the main positive contactor fed back by a motor controller are only utilized to realize rapid adhesion determination of the main negative contactor and the main positive contactor.
Description
Technical field
The invention belongs to new energy electric motor vehicle technical field, and in particular to a kind of contactor adhesion decision method.
Background technology
At present, in electric automobile application, generally charging and discharging circuit is controlled using contactor, as shown in figure 1, its
Include：The negative contactor K1 of master of connection battery module, for controlling battery module negative terminal；The positive contactor K3 of master, for controlling
Battery module anode；Preliminary filling contactor K4, for controlling battery module anode, for preliminary filling control；Trickle charge contactor K6, is used for
Control trickle charge charging anode；Contactor K5 is filled soon, for controlling charging anode soon；Also contacts device K2, for controlling heating
Loop.These contactors in use, because overload, band carry switching, control coil and power shakiness, contact abrasion etc.
Reason, causes contactor adhesion, makes the uncontrollable contactor of battery management system, and significant problem will be caused when serious.Therefore need
In battery management system power up above-mentioned contactor adhesion situation is judged using the information of its own, it is to avoid
There is the situation of contactor failure.
The content of the invention
It is an object of the invention to provide a kind of contactor adhesion decision method, for solving probe of contactor adhesion electricity is caused
The problem of the uncontrollable contactor of pond management system.
To solve above-mentioned technical problem, the present invention proposes a kind of contactor adhesion decision method, comprises the following steps：
1) battery voltage U1, the voltage U2 after main negative contactor are gathered, when the difference of battery voltage U1 and voltage U2 it is little
When the first setting value, main negative contactor adhesion is judged；
2) main negative contactor, the voltage U3 after the positive contactor of collection master, when battery voltage U1 and the difference of voltage U3 are closed
During less than the second setting value, the positive contactor adhesion of master is judged.
Further, charging and discharging circuit electric current I1, heating circuit electric current I2 are gathered, when charging and discharging circuit electric current I1 is more than 0,
And heating circuit electric current I2 be more than 0 when, judge also contacts device adhesion.
Further, the voltage U4 after preliminary filling contactor is gathered, when the difference of battery voltage U1 and voltage U4 is less than the 3rd
During setting value, preliminary filling contactor adhesion is judged.
Further, the voltage U5 filled soon after contactor is gathered, when the difference of battery voltage U1 and voltage U5 is less than the 4th
During setting value, contactor adhesion is filled soon in judgement.
Further, the voltage U6 after trickle charge contactor is gathered, when the difference of battery voltage U1 and voltage U6 is less than the 5th
During setting value, trickle charge contactor adhesion is judged.
The invention has the beneficial effects as follows：The pressure reduction of voltage after comparative cell group voltage and main negative contactor, comparison is electric
The pressure reduction of voltage after pond group voltage and the positive contactor of master, judges main negative contactor adhesion and the positive contactor adhesion of master.The method is former
Reason is simple, easily realizes, it is not necessary to additionally increase system burden, only need to utilize battery management system collection battery voltage and
Master bears the voltage after the voltage after contactor, the master of electric machine controller feedback are just contacted, and realizes that master bears contactor, main positive contactor
Quick adhesion judge.
Description of the drawings
Fig. 1 is a kind of charging and discharging circuit of electric automobile power supply system；
Fig. 2 is contactor adhesion determination flow schematic diagram.
Specific embodiment
The specific embodiment of the present invention is further described below in conjunction with the accompanying drawings.
A kind of embodiment of the contactor adhesion decision method of the present invention：
Collection battery voltage U1, the voltage U2 after main negative contactor, after battery voltage U1 is with main negative contactor
When the difference of voltage U2 is less than the first setting value, main negative contactor adhesion is judged；Voltage U3 after the positive contactor of collection master, works as battery
When the difference of group voltage U1 and voltage U3 is less than the second setting value, the positive contactor adhesion of master is judged.
Specifically, a kind of charging and discharging circuit of electric automobile power supply system as shown in Figure 1, wherein power-supply system includes battery
Management system, battery module, electrical module and related wire harness, battery management system framework using master-slave mode, Distributed Design or
Unitary design.It is when battery management system adopts master-slave architecture, i.e., main including master control administrative unit and from control administrative unit
Control administrative unit is responsible for battery data management, total voltage collection, charging and discharging currents collection, insulating monitoring, electric leakage monitoring, SOC/
The collection of SOH estimations, exception management, charge and discharge control strategy implement, Control and heated current, is responsible for from control administrative unit
Cell voltage, temperature acquisition, balanced management and Control.
Battery module is carried out in groups by cell by series-parallel system, using ternary battery or ferric phosphate lithium cell,
Design heater, all kinds of contactors, fuse in battery module.Electrical module includes the high pressure such as D.C. contactor, fuse
Device, wire harness includes high voltage power line, low pressure gathering line, control line, data telecommunication line etc..Battery management system monitor in real time electricity
Pond module, electrical module, and protection process is carried out, communicated with charger, entire car controller by CAN.
During design charging and discharging circuit, according to battery temperature rise demand under low temperature environment, the ptc heater of certain power is selected,
According to the also contacts device K2 of the power selection corresponding specification of ptc heater, in battery management system main control module relay control
In passage processed, select corresponding control relay, main negative contactor K1, fill contactor K5, trickle charge contactor K6, also contacts soon
Device K2, preliminary filling contactor K4.
After the upper electricity of BMS, battery management system collection two-way voltage：Terminal voltage after battery voltage U1, main negative contactor K1
U2, works as U1-U2<During 10V, main negative contactor K1 adhesions are judged.Electric machine controller gathers positive terminal voltage U3 of master after master just contacts,
Entire car controller occurs the magnitude of voltage by car load CAN, to battery management system, to work as U1-U3<During 10V, judge that master just contacts
Device K3 adhesions.Then battery management system gathers charging and discharging currents I1 by Hall, and by current divider heating circuit electric current is gathered
I2, works as I1=I2, and I1>When 0, or work as I1>I2>When 0, the equal adhesions of the negative contactor K1 of also contacts device K2, master are judged.Closure master
Negative contactor K1, battery management system receives preliminary filling terminal voltage U4 after electric machine controller collection preliminary filling contactor K4, works as U1-U4
<During 10V, preliminary filling contactor K4 adhesions are judged.Fill soon charger collection fill soon after contactor K5 fill terminal voltage U5 soon, led to
Overcharge CAN is sent to battery management system, works as U1-U5<During 10V, contactor K5 adhesions are filled soon in judgement.Equally, battery management
System receives trickle charge terminal voltage U6 after the trickle charge contactor K6 of trickle charge charger collection by charging CAN, works as U1-U6<10V
When, judge trickle charge contactor K6 adhesions.
Request of data in the present embodiment between battery management system and charger adopts CAN mechanism, CAN speed
Rate supports 10KBPS～1MBPS.
Claims (5)
1. a kind of contactor adhesion decision method, it is characterised in that comprise the following steps：
1) battery voltage U1, the voltage U2 after main negative contactor are gathered, when the difference of battery voltage U1 and voltage U2 is less than the
During one setting value, main negative contactor adhesion is judged；
2) main negative contactor, the voltage U3 after the positive contactor of collection master, when the difference of battery voltage U1 and voltage U3 is less than are closed
During the second setting value, the positive contactor adhesion of master is judged.
2. contactor adhesion decision method according to claim 1, it is characterised in that collection charging and discharging circuit electric current I1,
Heating circuit electric current I2, when charging and discharging circuit electric current I1 be more than 0, and heating circuit electric current I2 be more than 0 when, judge also contacts device
Adhesion.
3. contactor adhesion decision method according to claim 1, it is characterised in that the voltage after collection preliminary filling contactor
U4, when the difference of battery voltage U1 and voltage U4 is less than three setting values, judges preliminary filling contactor adhesion.
4. contactor adhesion decision method according to claim 1, it is characterised in that the voltage that collection is filled soon after contactor
U5, when the difference of battery voltage U1 and voltage U5 is less than four setting values, contactor adhesion is filled soon in judgement.
5. contactor adhesion decision method according to claim 1, it is characterised in that the voltage after collection trickle charge contactor
U6, when the difference of battery voltage U1 and voltage U6 is less than five setting values, judges trickle charge contactor adhesion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611249801.7A CN106597274B (en) | 2016-12-29 | 2016-12-29 | A kind of contactor adhesion determination method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611249801.7A CN106597274B (en) | 2016-12-29 | 2016-12-29 | A kind of contactor adhesion determination method |
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| CN106597274A true CN106597274A (en) | 2017-04-26 |
| CN106597274B CN106597274B (en) | 2019-06-21 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108254682A (en) * | 2017-12-28 | 2018-07-06 | 长园深瑞继保自动化有限公司 | The method of discrimination of direct-current charging post output contactor adhesion fault |
| CN108790829A (en) * | 2018-07-23 | 2018-11-13 | 四川江淮汽车有限公司 | A kind of high voltage loop of electric automobile Detection & Controling circuit and detection method |
| CN109100645A (en) * | 2018-08-10 | 2018-12-28 | 浙江普朗特电动汽车有限公司 | A kind of electric automobile high-voltage distribution system contactor adhesion detection method and device |
| CN109849733A (en) * | 2019-02-19 | 2019-06-07 | 广州小鹏汽车科技有限公司 | The device and method for detecting and handling for electric vehicle high-voltage relay adhesion |
| CN109884525A (en) * | 2017-12-01 | 2019-06-14 | 微宏动力系统（湖州）有限公司 | A kind of battery pack contactors adhesion detection device and method |
| CN114113992A (en) * | 2020-08-25 | 2022-03-01 | 北汽福田汽车股份有限公司 | Power storage battery heating relay adhesion determining method and device and vehicle |
| CN116609665A (en) * | 2023-06-01 | 2023-08-18 | 沃尔特电子（苏州）有限公司 | Contactor adhesion detection method |
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| CN106199409A (en) * | 2016-06-28 | 2016-12-07 | 苏州汇川技术有限公司 | High voltage electric equipment catalyst adhesion detecting system and method |
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| JP2012193984A (en) * | 2011-03-15 | 2012-10-11 | Toshiba Corp | Test method and test device of capacitor bank opening/closing performance |
| CN202535297U (en) * | 2012-03-23 | 2012-11-14 | 河南起重机器有限公司 | Control circuit preventing motor forward rotating contactor and motor backward rotating contactor from being adhered |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109884525A (en) * | 2017-12-01 | 2019-06-14 | 微宏动力系统（湖州）有限公司 | A kind of battery pack contactors adhesion detection device and method |
| CN109884525B (en) * | 2017-12-01 | 2021-08-10 | 微宏动力系统（湖州）有限公司 | Adhesion detection device and method for battery pack contactor |
| CN108254682A (en) * | 2017-12-28 | 2018-07-06 | 长园深瑞继保自动化有限公司 | The method of discrimination of direct-current charging post output contactor adhesion fault |
| CN108790829A (en) * | 2018-07-23 | 2018-11-13 | 四川江淮汽车有限公司 | A kind of high voltage loop of electric automobile Detection & Controling circuit and detection method |
| CN109100645A (en) * | 2018-08-10 | 2018-12-28 | 浙江普朗特电动汽车有限公司 | A kind of electric automobile high-voltage distribution system contactor adhesion detection method and device |
| CN109849733A (en) * | 2019-02-19 | 2019-06-07 | 广州小鹏汽车科技有限公司 | The device and method for detecting and handling for electric vehicle high-voltage relay adhesion |
| CN114113992A (en) * | 2020-08-25 | 2022-03-01 | 北汽福田汽车股份有限公司 | Power storage battery heating relay adhesion determining method and device and vehicle |
| CN114113992B (en) * | 2020-08-25 | 2022-09-20 | 北汽福田汽车股份有限公司 | Power storage battery heating relay adhesion determining method and device and vehicle |
| CN116609665A (en) * | 2023-06-01 | 2023-08-18 | 沃尔特电子（苏州）有限公司 | Contactor adhesion detection method |
| CN116609665B (en) * | 2023-06-01 | 2024-03-19 | 沃尔特电子（苏州）有限公司 | Contactor adhesion detection method |
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| CN106597274B (en) | 2019-06-21 |
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Effective date of registration: 20210713 Address after: 515000 11, building 8, science and Technology East Road, hi tech Zone, Shantou, Guangdong. Patentee after: GUANGDONG LEAWIN GROUP Co.,Ltd. Address before: No. 96, riverside north road, Hi-tech Zone, Luoyang, Henan Province Patentee before: LUOYANG POWIN INTELLIGENT CONTROL TECHNOLOGY Co.,Ltd. |