CN106394250A - Electric vehicle battery parallel connection and protection circuit - Google Patents
Electric vehicle battery parallel connection and protection circuit Download PDFInfo
- Publication number
- CN106394250A CN106394250A CN201610961963.7A CN201610961963A CN106394250A CN 106394250 A CN106394250 A CN 106394250A CN 201610961963 A CN201610961963 A CN 201610961963A CN 106394250 A CN106394250 A CN 106394250A
- Authority
- CN
- China
- Prior art keywords
- oxide
- metal
- semiconductor
- lithium battery
- protection circuit
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- 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
- B60L3/0046—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to electric energy storage systems, e.g. batteries or capacitors
-
- 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
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
-
- 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
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/0031—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits
-
- 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
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/0034—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using reverse polarity correcting or protecting circuits
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses an electric vehicle battery parallel connection and protection circuit. A lithium battery I BT1 and a lithium battery II BT2 are connected in parallel; the positive poles of the lithium battery I BT1 and the lithium battery II BT2 are connected with an electric door lock switch S1, the positive pole of a load and a charging positive pole; the negative poles of the lithium battery I BT1 and the lithium battery II BT2 are connected with a protection circuit for preventing currents from reversal flow, so as to prevent the lithium battery I BT1 and the lithium battery II BT2 from being mutually charged; and the protection circuit for preventing the currents from reversal flow is also connected with the negative pole of the load and a charging negative pole respectively. According to the electric vehicle battery parallel connection and protection circuit disclosed by the invention, two groups of battery packs are used, so that the battery capacity is increased, and the travelling mileage of an electric vehicle is increased; the protection circuit for preventing the currents from reversal flow, consisting of MOS tubes and a control circuit, is used for preventing the two groups of batteries from being mutually charged; and a Hall signal during running of a motor of the electric vehicle is detected through a single-chip microcomputer for determining whether the electric vehicle stops, if the electric vehicle stops, the output power supply is automatically disconnected after a period of time delay, so that the purpose of protecting the batteries is achieved.
Description
Technical field
The present invention relates to electric motor car charging technique field, more particularly, to a kind of battery of electric vehicle parallel connection and protection circuit.
Background technology
Because electric vehicle lithium battery price is higher, the lithium battery capacity that finding electric motor car is configured on the market is all less, this
Once charging distance travelled is shorter for sample electric motor car；Certain customers wish to increase course continuation mileage, are solved by increasing by one group of lithium battery
Determine this problem；Because two groups of lithium batteries have certain difference at aspects such as voltage, capacity, if directly simultaneously joint conference leads to two groups
Battery occurs mutually to fill phenomenon, causes battery premature failure.
Due to forgetting hastily to close electric vehicle power sources and car light after some user's parkings, electric energy wave so can be caused
Take, or even battery electric quantity is vented, cause cell damage.
Content of the invention
The object of the invention is exactly the defect in order to make up prior art, provides a kind of battery of electric vehicle in parallel and protection electricity
Road.
The present invention is achieved by the following technical solutions：
A kind of battery of electric vehicle is in parallel and protection circuit, include lithium battery one BT1, lithium battery two BT2, the switched S1 of electric switch,
Single-chip microcomputer U1 and prevent reverse direction current flow protection circuit, described lithium battery one BT1 and lithium battery two BT2 is in parallel, lithium battery
The positive pole of one BT1 and lithium battery two BT2 connects electric switch lock-switch S1, load positive pole and charging positive pole, lithium battery one BT1 and lithium electricity
The negative pole of pond two BT2 connects prevents reverse direction current flow protection circuit, to prevent lithium battery one BT1 and lithium battery two BT2 from occurring
Mutually fill, prevent reverse direction current flow protection circuit to be also respectively connected with load negative pole and charging negative pole, described single-chip microcomputer U1 with anti-
Only reverse direction current flow protection circuit connects.
Described prevent reverse direction current flow protection circuit include five metal-oxide-semiconductors be respectively metal-oxide-semiconductor Q1, metal-oxide-semiconductor Q2,
Metal-oxide-semiconductor Q3, metal-oxide-semiconductor Q4 and metal-oxide-semiconductor Q5, the negative pole of lithium battery one BT1 connects the drain electrode of metal-oxide-semiconductor Q2 and the source of metal-oxide-semiconductor Q4 respectively
Pole, the negative pole of lithium battery two BT2 connects the drain electrode of metal-oxide-semiconductor Q1 and the source electrode of metal-oxide-semiconductor Q3, the source electrode of metal-oxide-semiconductor Q1 and metal-oxide-semiconductor respectively
The source electrode of Q2 is all connected with the source electrode of metal-oxide-semiconductor Q5, and the drain electrode of metal-oxide-semiconductor Q5 connects load negative pole, the drain electrode of metal-oxide-semiconductor Q3 and metal-oxide-semiconductor Q4
Drain electrode connect after reconnect charging negative pole, described single-chip microcomputer U1 respectively with metal-oxide-semiconductor Q1, metal-oxide-semiconductor Q2, metal-oxide-semiconductor Q3, metal-oxide-semiconductor
The grid of Q4 and metal-oxide-semiconductor Q5 connects.
It is an advantage of the invention that：Present invention uses two Battery pack groups, increase battery capacity, increase in electric motor car traveling
Journey, prevents reverse direction current flow protection circuit by what metal-oxide-semiconductor and control circuit formed, to prevent two Battery packs from occurring mutually to fill；By
Hall signal when monolithic machine testing electric vehicle motor runs judging whether to stop, such as Parking duration for a period of time after from dynamic circuit breaker
Open out-put supply, reach protection battery purpose.
Prevent reverse direction current flow protection circuit by what Q1, Q2, Q3, Q4, Q5 formed so as to electric current can only be from metal-oxide-semiconductor
Source electrode flows to the drain electrode of metal-oxide-semiconductor, and reverse metal-oxide-semiconductor then turns off；Whether monolithic machine testing motor Hall of electric vehicle signal changes
Judging whether to stop, such as stopping, time delay automatically shuts down Q5 metal-oxide-semiconductor for a period of time afterwards, thus disconnecting out-put supply.
Brief description
Fig. 1 is the circuit diagram of the present invention.
Specific embodiment
As shown in figure 1, a kind of battery of electric vehicle is in parallel and protection circuit, include lithium battery one BT1, lithium battery two BT2,
The switched S1 of electric switch, single-chip microcomputer U1 and prevent reverse direction current flow protection circuit, described lithium battery one BT1 and lithium battery two
BT2 is in parallel, and the positive pole of lithium battery one BT1 and lithium battery two BT2 connects electric switch lock-switch S1, load positive pole and charging positive pole, lithium
The negative pole of battery one BT1 and lithium battery two BT2 connects prevents reverse direction current flow protection circuit, to prevent lithium battery one BT1 and
Lithium battery two BT2 occurs mutually to fill, and prevents reverse direction current flow protection circuit to be also respectively connected with load negative pole and charging negative pole, described
Single-chip microcomputer U1 be connected with preventing reverse direction current flow protection circuit.
Described prevent reverse direction current flow protection circuit include five metal-oxide-semiconductors be respectively metal-oxide-semiconductor Q1, metal-oxide-semiconductor Q2,
Metal-oxide-semiconductor Q3, metal-oxide-semiconductor Q4 and metal-oxide-semiconductor Q5, the negative pole of lithium battery one BT1 connects the drain electrode of metal-oxide-semiconductor Q2 and the source of metal-oxide-semiconductor Q4 respectively
Pole, the negative pole of lithium battery two BT2 connects the drain electrode of metal-oxide-semiconductor Q1 and the source electrode of metal-oxide-semiconductor Q3, the source electrode of metal-oxide-semiconductor Q1 and metal-oxide-semiconductor respectively
The source electrode of Q2 is all connected with the source electrode of metal-oxide-semiconductor Q5, and the drain electrode of metal-oxide-semiconductor Q5 connects load negative pole, the drain electrode of metal-oxide-semiconductor Q3 and metal-oxide-semiconductor Q4
Drain electrode connect after reconnect charging negative pole, described single-chip microcomputer U1 respectively with metal-oxide-semiconductor Q1, metal-oxide-semiconductor Q2, metal-oxide-semiconductor Q3, metal-oxide-semiconductor
The grid of Q4 and metal-oxide-semiconductor Q5 connects.
Claims (2)
1. a kind of battery of electric vehicle is in parallel and protection circuit it is characterised in that：Include lithium battery one BT1, lithium battery two BT2,
Electric switch lock-switch S1, single-chip microcomputer U1 and prevent reverse direction current flow protection circuit, described lithium battery one BT1 and lithium battery two
BT2 is in parallel, and the positive pole of lithium battery one BT1 and lithium battery two BT2 connects electric switch lock-switch S1, load positive pole and charging positive pole, lithium
The negative pole of battery one BT1 and lithium battery two BT2 connects prevents reverse direction current flow protection circuit, to prevent lithium battery one BT1 and
Lithium battery two BT2 occurs mutually to fill, and prevents reverse direction current flow protection circuit to be also respectively connected with load negative pole and charging negative pole, described
Single-chip microcomputer U1 be connected with preventing reverse direction current flow protection circuit.
2. a kind of battery of electric vehicle according to claim 1 is in parallel and protection circuit it is characterised in that：Described prevents electricity
Stream reverse flow protection circuit includes five metal-oxide-semiconductors and is respectively metal-oxide-semiconductor Q1, metal-oxide-semiconductor Q2, metal-oxide-semiconductor Q3, metal-oxide-semiconductor Q4 and metal-oxide-semiconductor
The negative pole of Q5, lithium battery one BT1 connects the drain electrode of metal-oxide-semiconductor Q2 and the source electrode of metal-oxide-semiconductor Q4 respectively, and the negative pole of lithium battery two BT2 divides
Not Lian Jie the drain electrode of metal-oxide-semiconductor Q1 and the source electrode of metal-oxide-semiconductor Q3, the source electrode of the source electrode of metal-oxide-semiconductor Q1 and metal-oxide-semiconductor Q2 is all connected with metal-oxide-semiconductor Q5
Source electrode, the drain electrode of metal-oxide-semiconductor Q5 connects load negative pole, and the drain electrode of the drain electrode of metal-oxide-semiconductor Q3 and metal-oxide-semiconductor Q4 reconnects after connecting charges
Negative pole, described single-chip microcomputer U1 is connected with the grid of metal-oxide-semiconductor Q1, metal-oxide-semiconductor Q2, metal-oxide-semiconductor Q3, metal-oxide-semiconductor Q4 and metal-oxide-semiconductor Q5 respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610961963.7A CN106394250A (en) | 2016-11-04 | 2016-11-04 | Electric vehicle battery parallel connection and protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610961963.7A CN106394250A (en) | 2016-11-04 | 2016-11-04 | Electric vehicle battery parallel connection and protection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106394250A true CN106394250A (en) | 2017-02-15 |
Family
ID=58015138
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610961963.7A Pending CN106394250A (en) | 2016-11-04 | 2016-11-04 | Electric vehicle battery parallel connection and protection circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106394250A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102694397A (en) * | 2011-03-22 | 2012-09-26 | 飞毛腿(福建)电子有限公司 | Control method of battery output parallel connection |
| KR101416816B1 (en) * | 2012-11-28 | 2014-08-06 | 에스케이씨앤씨 주식회사 | Apparatus for measuring insulation resistance and method thereof |
| CN105098904A (en) * | 2015-08-03 | 2015-11-25 | 成都宇能通能源开发有限公司 | Control system having protection function and supporting adding of different types of chargeable and dischargeable devices and method thereof |
| CN205265279U (en) * | 2015-12-14 | 2016-05-25 | 杭州中恒电气股份有限公司 | Novel charge -discharge management system of multichannel group battery |
-
2016
- 2016-11-04 CN CN201610961963.7A patent/CN106394250A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102694397A (en) * | 2011-03-22 | 2012-09-26 | 飞毛腿(福建)电子有限公司 | Control method of battery output parallel connection |
| KR101416816B1 (en) * | 2012-11-28 | 2014-08-06 | 에스케이씨앤씨 주식회사 | Apparatus for measuring insulation resistance and method thereof |
| CN105098904A (en) * | 2015-08-03 | 2015-11-25 | 成都宇能通能源开发有限公司 | Control system having protection function and supporting adding of different types of chargeable and dischargeable devices and method thereof |
| CN205265279U (en) * | 2015-12-14 | 2016-05-25 | 杭州中恒电气股份有限公司 | Novel charge -discharge management system of multichannel group battery |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7863863B2 (en) | Multi-cell battery pack charge balance circuit | |
| KR20150096919A (en) | Electric automobile | |
| CN201699401U (en) | Protection circuit of power lithium ion battery | |
| CN105021998A (en) | Battery voltage detection device and electronic equipment | |
| CN104300606A (en) | Multi-string battery protection system | |
| CN106130100A (en) | Controlled battery charger and charger | |
| CN102668308B (en) | For balancing the circuit of the charging of the battery unit be connected in series | |
| CN204205670U (en) | Electrokinetic cell internal circuit and electric automobile | |
| CN106059002A (en) | Electric vehicle, power supply system and charge and discharge method | |
| CN104979519B (en) | A kind of rechargeable lithium ion batteries device | |
| CN107069902A (en) | power supply circuit for battery management system | |
| CN2922234Y (en) | Over-discharge protecting circuit for power lithium ion cell | |
| CN106394250A (en) | Electric vehicle battery parallel connection and protection circuit | |
| CN201623235U (en) | Charging state equalizing circuit of power lithium ion batteries | |
| CN206211587U (en) | A kind of electric vehicle charging cord line protection device | |
| CN105576820A (en) | Automatic switching controller of electromobile emergency battery | |
| CN203117397U (en) | Battery leakage detection circuit | |
| CN106329607A (en) | Charger with function of automatically switching off charging/discharging | |
| CN204992570U (en) | Charger output short -circuit protection system | |
| CN204832470U (en) | Battery voltage detection device and electronic equipment | |
| KR102087701B1 (en) | Power relay assembly driving apparatus and method for electric vehicle | |
| CN207098661U (en) | power supply circuit for battery management system | |
| CN206060242U (en) | Lithium ion battery charge-discharge protection circuit and lithium-ion battery systems | |
| CN105680547A (en) | Solar charging system arranged on vehicle | |
| CN205861759U (en) | A kind of overcurrent detecting device of electric automobile direct-current charging post |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170215 |