CN106655360A - High-voltage pre-charging system of battery pack BMS system and control method of high-voltage pre-charging system - Google Patents
High-voltage pre-charging system of battery pack BMS system and control method of high-voltage pre-charging system Download PDFInfo
- Publication number
- CN106655360A CN106655360A CN201611087405.9A CN201611087405A CN106655360A CN 106655360 A CN106655360 A CN 106655360A CN 201611087405 A CN201611087405 A CN 201611087405A CN 106655360 A CN106655360 A CN 106655360A
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- CN
- China
- Prior art keywords
- relay
- voltage
- battery bag
- control method
- pressure
- 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.)
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0069—Charging or discharging for charge maintenance, battery initiation or rejuvenation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
- H01M10/446—Initial charging measures
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The invention discloses a high-voltage pre-charging system of a battery pack BMS system. A negative power line connected with a relay K1 in series and a positive power line connected with a relay K3 in series are connected with positive electrodes and negative electrodes of a high-voltage system and a battery pack respectively; the relay K3 on the positive power line is connected with a pre-charging control circuit in parallel; the pre-charging control circuit is formed by connecting a relay K2 and resistors in series; the positive electrodes and the negative electrodes of the high-voltage system and the battery pack are provided with a voltage collection unit; the voltage collection unit outputs a voltage signal to the controller; and the controller outputs a control signal to the relay K1, the relay K2 and the relay K3. Secure connection of the high-voltage system is achieved, a capacitive load of the high-voltage system can be safely charged, and the high-voltage pre-charging system of the battery pack BMS system is simple in structure, low in implementation cost and stable and reliable in operation.
Description
Technical field
The present invention relates to electric automobile power battery technical field, is related specifically to a kind of high pressure of battery bag BMS system
Pre-charge system and control method.
Background technology
Development of EV, realize energy source of car dynamical system electrification be solve current auto industry energy crisis,
The only way of environmental crisis.China's about 2.89 hundred million tons of net oil import in 2013, importation dependence exceeds well over state up to 57%
Guard against line standard 35% in border.Wherein fuel oil for vehicles consumption accounts for the 1/3 of total consumption of petroleum.Exploitation promotes electric automobile to safeguarding China
Energy security has important strategic importance with sustained development.
At present, prior art state is that cell p ack is pre-charged by the high-voltaghe compartment that BMS is controlled, existing to frequently result in preliminary filling not
Can complete, cell p ack can be pre-charged repeatedly in front end, this causes the accumulation of preliminary filling resistance heat amount and the cut-out of relay bringing onto load,
Often damage preliminary filling resistance or burn preliminary filling relay.
The content of the invention
The technical problem to be solved be realize one kind can secure connection high-pressure system and to high-pressure system hold
Property load charging system and control method.
To achieve these goals, the technical solution used in the present invention is：A kind of high pressure precharge of battery bag BMS system
System, the anode power cord for being in series with relay K1 and the cathode power supply line for being in series with relay K3 connect respectively high-pressure system and
The both positive and negative polarity of battery bag, the relay K3 on described cathode power supply line is parallel with precharge control circuit, and the preliminary filling is automatically controlled
System electricity routing relay K2 and resistant series are constituted, and described high-pressure system and the both positive and negative polarity of battery bag is provided with voltage acquisition list
Unit, the voltage acquisition unit outputs voltage signal to controller, and the controller outputs control signals to relay K1, relay
Device K2 and relay K3.
Control method based on the high pressure pre-charge system of battery bag BMS system, it is characterised in that：
1) relay K1 and relay K2 paths are made, guard relay K3 is breaking；
2) in setting time, if the voltage of high-pressure system and battery bag reaches established standardses, relay K3 paths are made, if
Not up to established standardses, then make relay K1 and relay K2 breaking.
It is described 1) in first closing relay K1, be closed again relay K2.
It is described 2) in setting time be 2s.
It is described 2) in established standardses reach the 90% of battery bag both end voltage for the voltage of high-pressure system.
The present invention realizes that the safety to high-pressure system is connected, and can be to the safe charging of high-pressure system capacitive load, system
Simple structure, implementation cost is low, and stable and reliable operation.
Description of the drawings
The content of every width accompanying drawing expression in description of the invention is briefly described below：
Fig. 1 is the high pressure pre-charge system schematic diagram of battery bag BMS system.
Specific embodiment
As shown in figure 1, being in series with the anode power cord of relay K1 and being in series with the cathode power supply line difference of relay K3
The both positive and negative polarity of connection high-pressure system and battery bag, the relay K3 on cathode power supply line is parallel with precharge control circuit, and this is pre-
Charging control circuit is made up of relay K2 and resistant series.
Additionally, the both positive and negative polarity of high-pressure system and battery bag is provided with voltage acquisition unit, the electricity at battery pack two ends is gathered respectively
The pressure Vbatt and voltage HV at high-pressure system two ends, voltage acquisition unit outputs voltage signal to controller, and controller is available
BMS compatible processings, controller outputs control signals to relay K1, relay K2 and relay according to the voltage signal for being gathered
K3。
Charging circuit not only has the function of protection system relay, decreases the mutation of bus current to capacitive load
Impact impact.The main cause for introducing high pressure pre-charging functions is that safety connects high-pressure system, and " precharge " is referred in height
During pressure system is connected, high-pressure system capacitive apparatus are charged, after high-pressure system is connected, no longer possess this function.
The main function of system realizes that the safety to high-pressure system is connected, if directly connecting direct-current high-voltage system, exists
Defect be before high-pressure system is connected, it is impossible to perceive output circuit with the presence or absence of the failure such as load excessive or short circuit, therefore,
During connection, it is understood that there may be fuse blow or device infringement etc. failure.High-pressure system can be reduced to capacitive and resistance type composition
System, from the transient effect of electric capacity, when voltage is added in suddenly electric capacity two ends, the voltage transient at electric capacity two ends does not become
Change, the voltage change at electric capacity two ends is that RC time constants are determined.
Relay closure sequential be：Negative terminal relay is closed first, then closes pre-charge-relay, monitoring control devices
The voltage Vbatt at the battery pack two ends and voltage HV at high-pressure system two ends, if in 2s, the voltage at high-pressure system two ends reaches
The 90% of battery both end voltage, is considered as precharge and completes, and at this moment closes anode relay, is then turned off being pre-charged relay
Device, realizes the safety connection of high-pressure system.
The present invention is exemplarily described above in conjunction with accompanying drawing, it is clear that the present invention is implemented and do not receive aforesaid way
Restriction, as long as employing the improvement of various unsubstantialities that method of the present invention design and technical scheme are carried out, or without changing
Enter and the design of the present invention and technical scheme are directly applied to into other occasions, within protection scope of the present invention.
Claims (5)
1. a kind of high pressure pre-charge system of battery bag BMS system, be in series with relay K1 anode power cord and be in series with after
The cathode power supply line of electrical equipment K3 connects respectively the both positive and negative polarity of high-pressure system and battery bag, it is characterised in that：Described cathode power supply
Relay K3 on line is parallel with precharge control circuit, and the precharge control circuit is by relay K2 and resistant series structure
Into described high-pressure system and the both positive and negative polarity of battery bag is provided with voltage acquisition unit, the voltage acquisition unit output voltage letter
Number to controller, the controller outputs control signals to relay K1, relay K2 and relay K3.
2. the control method of the high pressure pre-charge system of battery bag BMS system described in claim 1 is based on, it is characterised in that：
1) relay K1 and relay K2 paths are made, guard relay K3 is breaking；
2) in setting time, if the voltage of high-pressure system and battery bag reaches established standardses, relay K3 paths are made, if not reaching
To established standardses, then make relay K1 and relay K2 breaking.
3. control method according to claim 2, it is characterised in that：It is described 1) in first closing relay K1, be closed again after
Electrical equipment K2.
4. control method according to claim 2, it is characterised in that：It is described 2) in setting time be 2s.
5. control method according to claim 2, it is characterised in that：It is described 2) in established standardses for high-pressure system electricity
Pressure reaches the 90% of battery bag both end voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611087405.9A CN106655360A (en) | 2016-12-01 | 2016-12-01 | High-voltage pre-charging system of battery pack BMS system and control method of high-voltage pre-charging system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611087405.9A CN106655360A (en) | 2016-12-01 | 2016-12-01 | High-voltage pre-charging system of battery pack BMS system and control method of high-voltage pre-charging system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106655360A true CN106655360A (en) | 2017-05-10 |
Family
ID=58814554
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611087405.9A Pending CN106655360A (en) | 2016-12-01 | 2016-12-01 | High-voltage pre-charging system of battery pack BMS system and control method of high-voltage pre-charging system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106655360A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107696869A (en) * | 2017-11-15 | 2018-02-16 | 宁德时代新能源科技股份有限公司 | Control circuit, high-voltage box and battery management device |
| CN107968450A (en) * | 2017-10-23 | 2018-04-27 | 宁德时代新能源科技股份有限公司 | Protection method and device of switch assembly and battery management system |
| CN112034337A (en) * | 2020-09-25 | 2020-12-04 | 安徽鸿创新能源动力有限公司 | New energy automobile negative relay adhesion detection system and method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| KR20160081058A (en) * | 2014-12-30 | 2016-07-08 | 한국단자공업 주식회사 | Method of checking state of pra |
-
2016
- 2016-12-01 CN CN201611087405.9A patent/CN106655360A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| KR20160081058A (en) * | 2014-12-30 | 2016-07-08 | 한국단자공업 주식회사 | Method of checking state of pra |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107968450A (en) * | 2017-10-23 | 2018-04-27 | 宁德时代新能源科技股份有限公司 | Protection method and device of switch assembly and battery management system |
| CN107968450B (en) * | 2017-10-23 | 2020-05-05 | 宁德时代新能源科技股份有限公司 | Protection method and device of switch assembly and battery management system |
| CN107696869A (en) * | 2017-11-15 | 2018-02-16 | 宁德时代新能源科技股份有限公司 | Control circuit, high-voltage box and battery management device |
| CN112034337A (en) * | 2020-09-25 | 2020-12-04 | 安徽鸿创新能源动力有限公司 | New energy automobile negative relay adhesion detection system and method |
| CN112034337B (en) * | 2020-09-25 | 2023-07-14 | 安徽鸿创新能源动力有限公司 | New energy automobile negative relay adhesion detection system and method |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170510 |
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| RJ01 | Rejection of invention patent application after publication |