CN210258094U - Lithium battery charging start control system - Google Patents
Lithium battery charging start control system Download PDFInfo
- Publication number
- CN210258094U CN210258094U CN201920140967.8U CN201920140967U CN210258094U CN 210258094 U CN210258094 U CN 210258094U CN 201920140967 U CN201920140967 U CN 201920140967U CN 210258094 U CN210258094 U CN 210258094U
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- Prior art keywords
- management system
- vehicle
- obc
- power management
- bms
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- Expired - Fee Related
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 15
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 15
- 230000009466 transformation Effects 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 4
- 238000006243 chemical reaction Methods 0.000 abstract description 2
- 230000006872 improvement Effects 0.000 description 7
- 238000004891 communication Methods 0.000 description 4
- 238000012790 confirmation Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
Images
Classifications
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- 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
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- 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
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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- 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
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/14—Plug-in electric vehicles
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The utility model discloses a lithium battery charging start control system, which comprises an OBC vehicle-mounted charger and a BMS power management system; the OBC vehicle-mounted charger supplies power to the BMS power management system through the voltage transformation module; the OBC vehicle-mounted charger comprises a built-in relay, the relay is connected with the BMS power management system, and the relay is used for sending a CC signal to the BMS power management system; a contact switch of a relay KM2 is arranged between the OBC vehicle-mounted charger and the battery pack, and a coil of the relay KM2 is connected with a BMS power management system. The utility model discloses a lithium battery charging start control system, as long as the on-vehicle machine that charges of OBC connects outside 220V power, the on-vehicle machine that charges of OBC can give BMS power management system through conversion 220V alternating current output 12V power, avoids the unable circumstances of charging that the battery feed leads to completely, as long as there is the 220V alternating current can accomplish the process that charges for the group battery.
Description
Technical Field
The utility model belongs to the technical field of electric vehicle's battery charging, especially, relate to a lithium battery charging start control system.
Background
When the existing lithium battery for the electric low-speed vehicle is charged, charging can be carried out after the completion of charging confirmation by a charging confirmation signal (CC signal) is required. As shown in fig. 2, the CC signal is generally obtained by taking the voltage of the vehicle-mounted auxiliary 12V storage battery, and when the CC signal passes through the switch K1 turned on in the connection process of the charging plug and the socket, the 12V voltage is transmitted to the BMS power management system, and the BMS power management system is also supplied with power by the 12V vehicle-mounted auxiliary storage battery, and the BMS power management system receives the CC signal under the normal working state, starts the coil of the KM1 contactor, and closes the KM1 main contact switch to realize charging. When the vehicle is placed for a long time or used for a long time, the 12V vehicle-mounted auxiliary storage battery can generate power feeding, the CC signal switch is closed after the charging plug socket is connected, but the 12V vehicle-mounted auxiliary storage battery has no voltage output or the output voltage is too low, so that the main contactor KM1 cannot be closed to charge.
The BMS battery system is commonly called a battery caregiver or a battery manager, and is mainly used for intelligently managing and maintaining each battery unit, preventing overcharge and overdischarge of the battery, prolonging the service life of the battery, and monitoring the state of the battery. BMS battery management system unit includes BMS battery management system, control module group, display module group, wireless communication module group, electrical equipment, is used for the group battery of electrical equipment power supply and is used for gathering the collection module of the battery information of group battery, BMS battery management system passes through communication interface and is connected with wireless communication module group and display module group respectively, the output of gathering the module is connected with BMS battery management system's input, BMS battery management system's output is connected with the input of control module group, the control module group is connected with group battery and electrical equipment respectively, BMS battery management system passes through wireless communication module and is connected with the Server end.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to above not enough, provide a lithium cell charging start control system, as long as OBC vehicle-mounted machine of charging switch-on external power source can charge to the group battery, avoid the unable circumstances of charging because of the on-vehicle auxiliary battery feed of 12V leads to completely.
For solving the technical problem, the utility model discloses a following technical scheme:
the utility model provides a lithium cell starts control system that charges, includes the on-vehicle machine that charges of OBC and BMS power management system, and the on-vehicle machine that charges of OBC can supply power for BMS power management system.
As an improvement, the OBC vehicle-mounted charger comprises a built-in relay, and the relay is connected with a BMS power management system; when the OBC vehicle-mounted charger is connected with an external power supply, the relay is used for sending a CC signal to the BMS power management system.
As an improvement, be equipped with the vary voltage module between OBC on-vehicle machine that charges and BMS power management system.
As a modification, the transformation module inputs 72V voltage from an OBC vehicle-mounted charger and converts the 72V voltage into 12V voltage for output.
As an improvement, the OBC vehicle-mounted charger is connected with a battery pack.
As an improvement, a switch of a relay KM2 is arranged between the OBC vehicle-mounted charger and the battery pack, and a coil of the relay KM2 is connected with a BMS power management system.
As an improvement, a charging plug and a charging socket are arranged between the output end of the OBC vehicle-mounted charger and the battery pack.
As an improvement, the lithium battery charging starting control system further comprises a 12V storage battery connected with the BMS power management system, and the 12V storage battery is used for supplying power to the BMS power management system.
The utility model adopts the above technical scheme after, compare with prior art, have following advantage:
the utility model discloses a OBC vehicle-mounted machine output power that charges supplies power for BMS power management system, gives the CC signal simultaneously and to BMS power management system, and BMS power management system sends closed KM 1's instruction this moment, realizes charging. Therefore, as long as the OBC vehicle-mounted charger is connected with an external 220V power supply, the OBC vehicle-mounted charger can output a 12V power supply to the BMS power management system by converting 220V alternating current, so that the situation that the 12V vehicle-mounted auxiliary storage battery cannot be charged due to the fact that the vehicle is placed for a long time or used for a long time is completely avoided, namely, the process of charging the battery pack can be completed as long as the 220V alternating current exists.
The present invention will be described in detail with reference to the accompanying drawings and examples.
Drawings
Fig. 1 is a logic diagram of a lithium battery charging start control system according to the present invention;
FIG. 2 is a logic diagram of a lithium battery charging start control system in the background art;
Detailed Description
In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described with reference to the accompanying drawings.
Examples
As shown in fig. 1, a lithium battery charging start control system includes an OBC vehicle-mounted charger, a BMS power management system, and a 12V battery connected to the BMS power management system, the 12V battery being used to supply power to the BMS power management system; the OBC vehicle-mounted charger can supply power to the BMS power management system. A voltage transformation module is arranged between the OBC vehicle-mounted charger and the BMS power management system, and the voltage transformation module inputs 72V voltage from the OBC vehicle-mounted charger and converts the 72V voltage into 12V voltage to be output. The voltage transformation module can be a voltage transformation module integrated in the OBC vehicle-mounted charger and is used for converting 72V voltage into 12V voltage; other transformation modules with transformation function are also possible.
As shown in fig. 1, the OBC vehicle-mounted charger includes a built-in relay, the relay is connected to the BMS power management system, and when the OBC vehicle-mounted charger is connected to an external power source, the relay is used for sending a CC signal to the BMS power management system. The OBC vehicle-mounted charger is connected with the battery pack, and a charging plug socket is arranged between the output end of the OBC vehicle-mounted charger and the battery pack. A switch of a relay KM2 is arranged between the battery pack and the charging plug socket. The coil of relay KM2 was connected to the BMS power management system.
The preferred BMS power management system and OBC vehicle-mounted charger in this embodiment are both commercially available. The model of the BMS power management system is BMS 02. The BMS power management system may also be of the BPL-BS-AI0-30-V01 type or any other type that can accomplish the above functions.
By adopting the design, when the battery pack is charged, as shown in fig. 1, the charging plug and the socket at the output end of the OBC vehicle-mounted charger are firstly connected, so that the connection between the OBC and the battery pack is realized; then the OBC vehicle-mounted charger is connected with 220V alternating current, at the moment, the OBC vehicle-mounted charger outputs 12V power to the BMS power management system, on one hand, the power is supplied to the BMS power management system, on the other hand, a CC signal is output to the BMS power management system, and charging confirmation is started; when the BMS receives the CC confirmation signal, the coil of the relay KM2 is started, the switch of the relay KM2 is closed to complete the loop closing, and the OBC is achieved to charge the battery pack.
To sum up, the utility model relates to a lithium cell charging start control system, as long as the on-vehicle machine that charges of OBC connects outside 220V power, the on-vehicle machine that charges of OBC can be through conversion 220V alternating current output 12V power for BMS power management system, adopts to avoid completely placing or using for a long time because of the vehicle, and the unable circumstances of charging that 12V on-vehicle supplementary battery feed leads to takes place, as long as there is the 220V alternating current can accomplish the process that becomes the group battery and charges promptly.
The above-mentioned embodiments are only exemplary, and in order to enable those skilled in the art to better understand the present invention, it should not be understood as a limitation to the scope of the present invention, and any improvement made according to the technical solution of the present invention is included in the scope of the present invention.
Claims (1)
1. The utility model provides a lithium battery charging start control system which characterized in that: including OBC on-vehicle machine and BMS that charge
The OBC vehicle-mounted charger can supply power to the BMS power management system; the OBC vehicle-mounted charger comprises a built-in relay, and the relay is connected with the BMS power management system; when the OBC vehicle-mounted charger is connected with an external power supply, the relay is used for sending a CC signal to the BMS power management system; a voltage transformation module is arranged between the OBC vehicle-mounted charger and the BMS power management system; the input of the voltage transformation module is 72V voltage from an OBC vehicle-mounted charger, and the 72V voltage is converted into 12V voltage to be output; the OBC vehicle-mounted charger is connected with a battery pack; a contact switch of a relay KM2 is arranged between the OBC vehicle-mounted charger and the battery pack, and a coil of the relay KM2 is connected with a BMS power management system; a charging plug socket is arranged between the output end of the OBC vehicle-mounted charger and the battery pack; the lithium battery charging starting control system further comprises a 12V storage battery connected with the BMS power management system, and the 12V storage battery is used for supplying power to the BMS power management system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920140967.8U CN210258094U (en) | 2019-01-26 | 2019-01-26 | Lithium battery charging start control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920140967.8U CN210258094U (en) | 2019-01-26 | 2019-01-26 | Lithium battery charging start control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210258094U true CN210258094U (en) | 2020-04-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920140967.8U Expired - Fee Related CN210258094U (en) | 2019-01-26 | 2019-01-26 | Lithium battery charging start control system |
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| CN (1) | CN210258094U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114312390A (en) * | 2020-09-30 | 2022-04-12 | 比亚迪股份有限公司 | Charging device, charging control method, and vehicle |
-
2019
- 2019-01-26 CN CN201920140967.8U patent/CN210258094U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114312390A (en) * | 2020-09-30 | 2022-04-12 | 比亚迪股份有限公司 | Charging device, charging control method, and vehicle |
| CN114312390B (en) * | 2020-09-30 | 2024-01-30 | 比亚迪股份有限公司 | Charging device, charging control method and vehicle |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200407 |