CN210608604U - High-voltage battery system - Google Patents
High-voltage battery system Download PDFInfo
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- CN210608604U CN210608604U CN201921698041.7U CN201921698041U CN210608604U CN 210608604 U CN210608604 U CN 210608604U CN 201921698041 U CN201921698041 U CN 201921698041U CN 210608604 U CN210608604 U CN 210608604U
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Abstract
The utility model provides a high voltage battery system, including high voltage battery package, high voltage battery management system, wherein high voltage battery package is established ties by several battery package and is formed, high voltage battery management system is by the low pressure slave control unit that corresponds with battery package quantity, high pressure conversion the control unit with positive negative pole bus connection of battery, and follow the high pressure main control unit that control unit and high pressure conversion the control unit are connected respectively with the low pressure and constitute, high pressure main control unit is through acquireing the electric core data that the low pressure reported from the control unit, the balanced control of charge-discharge is carried out to electric core in the initiative, in order to guarantee that electric core reaches balanced effect, increase battery system's life.
Description
Technical Field
The invention belongs to the field of batteries, and relates to a high-voltage battery module formed by integrating low-voltage batteries in a multi-level battery management system.
Background
The battery system can meet the requirements of an uninterruptible power supply, energy storage equipment and an electric vehicle on energy which can be controlled and voltage which can be called. Usually, a multi-module battery is used, and a multi-level battery management system usually uses a high-voltage battery module formed by integrating a plurality of low-voltage battery packs and corresponding electrical systems.
Disclosure of Invention
The utility model provides a high voltage battery module that integrated low voltage battery formed can monitor the management through the bus to different low voltage battery package, and then integrated for high voltage battery.
A high-voltage battery system comprises a high-voltage battery pack and a high-voltage battery management system, wherein the high-voltage battery pack is formed by connecting a plurality of battery packs in series, and the high-voltage battery management system is composed of low-voltage slave control units corresponding to the number of the battery packs, high-voltage conversion control units connected with positive and negative electrode buses of the batteries, and high-voltage master control units respectively connected with the low-voltage slave control units and the high-voltage conversion control units.
The low-voltage slave control unit is connected with the corresponding battery pack through a signal acquisition wiring harness, and the acquisition wiring harness is a voltage and temperature acquisition wiring harness.
And the monitoring signals of the plurality of low-voltage slave control units for acquiring and monitoring the voltage and temperature data of the low-voltage battery pack are transmitted to the high-voltage master control unit through ID identification and a CAN1 bus.
And the high-voltage main control unit is connected with an upper system through a communication bus.
The high-voltage main control unit is connected with a CAN-to-USB interface through a CAN3 bus and connected with an upper system, and the power control unit is also connected with a 485-to-USB interface through a 485 bus and connected with the upper system.
The high-voltage conversion control unit mainly comprises a switching power supply, a fuse, a power diode, a current divider, a power relay, a current sensor and the like, wherein the switching power supply performs voltage reduction and isolation processing on input high voltage to provide a 12V power supply, the fuse and the diode perform overcurrent and reverse connection prevention protection on a high-voltage main loop, and the relay performs charging and discharging and alarm switching processing.
The high-voltage main control unit mainly comprises a voltage conversion voltage stabilizing circuit, a relay driving circuit, a PWM fan driving circuit, an ID identification isolation circuit, a 485 communication isolation circuit, a 232 communication isolation circuit, a single chip microcomputer MC9S12XEP100 interface circuit, a CAN communication isolation circuit and the like, wherein the voltage conversion voltage stabilizing circuit outputs positive and negative 12V, 5V and other voltages to provide stable and accurate power supplies for various control modules connected with the voltage conversion voltage stabilizing circuit.
The low-voltage slave control unit 31 mainly comprises an acquisition filter circuit, an ID identification isolation circuit, a singlechip MC9S08DZ60 interface circuit, a CAN communication isolation circuit and the like. The analog circuit of the voltage and temperature acquisition chip BQ76PL455 is powered by a battery power supply, the communication digital circuit is powered by an isolation power supply which is the same as the single chip microcomputer, voltage acquisition of 6-16 series single batteries is supported, and 4 paths of differential temperature acquisition are supported.
Each battery pack is connected with the low-voltage slave control unit 31 through an independent voltage and temperature acquisition wiring harness 28, each low-voltage slave control unit 31 is connected with the high-voltage master control unit 35 through ID identification and a CAN1 bus, the low-voltage slave control unit 31 is connected with the low-voltage battery pack through the voltage and temperature acquisition wiring harness 28, voltage and temperature data acquisition monitoring is carried out on the low-voltage battery pack, and monitoring signals are transmitted to the high-voltage master control unit 35 through the ID identification and the CAN1 bus.
One high-voltage main control unit 35 can be matched with thirty low-voltage slave control units 31 at most, the low-voltage slave control units 31 are connected in series in a chain mode through connectors and cables, and the tail-most low-voltage slave control unit 31 is directly connected with the high-voltage main control unit 35 through the connectors and the cables.
The high-voltage battery management system may comprise at least four low-voltage slave control units and one high-voltage master control unit, and the combination strategy describes a minimum application form of the battery management system required by the high-voltage battery system.
The high-voltage main control unit 35 can actively perform charge and discharge balance control on the battery cell by acquiring the battery cell data reported by the low-voltage slave control unit 31, so as to ensure that the battery cell achieves a balance effect and prolong the service life of the battery system.
The plurality of low-voltage slave control units 31, the high-voltage conversion control unit and the high-voltage master control unit 35 are all connected with a 12V power supply and can obtain working power supply input from the 12V power supply together.
The utility model discloses high voltage battery system, the demand that satisfies low voltage battery package integration for high voltage battery that can, the demand is realized in the combination that can realize the different voltages in the battery system, can realize concrete battery system according to the practical application condition makes up. And the hardware connection interface, the software communication protocol and the operation control parameter among the modules cooperate to complete more complex battery management logic and application, so as to realize battery systems with different voltage requirements.
Drawings
Fig. 1 is a schematic diagram of a high voltage battery system configuration;
reference numerals: 11. a low voltage battery system; 12. a high voltage battery system; 13. connecting a high-voltage battery system; 20. a battery management system; 21. a low voltage battery management system; 22. a high voltage battery management system; 23. a cascade battery management system; 31. a low-voltage slave control unit; 32. a power control unit; 33. a high voltage acquisition unit; 34. a current collection unit; 35. a high-voltage main control unit; 36. a system control unit; 37. an insulation control unit; 2. a communication bus; 5. collecting the wire harness at high voltage; 6. a 12V power supply and a serial port wiring harness; 9. a power supply and a control harness; 10. the low-voltage slave control unit is connected with the wiring harness in a cascade mode; 28. a voltage and temperature acquisition harness; 38. a storage control unit; 39. and a display terminal control unit.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail by the accompanying drawings and specific embodiments.
The high-voltage battery system 12 manages the high-voltage master control unit 35 and at least four low-voltage slave control units 31 through the high-voltage battery management system 22, and combines corresponding peripheral electrical elements and lithium battery cell units to form the high-voltage battery system.
The high-voltage conversion control unit mainly comprises a switching power supply, a fuse, a power diode, a shunt, a power relay, a current sensor and the like. The switch power supply performs voltage reduction and isolation processing on input high voltage to provide a 12V power supply, the fuse and the diode perform overcurrent and reverse connection prevention protection on a high-voltage main loop, and the relay performs charging and discharging and alarm switching processing.
The high-voltage main control unit mainly comprises a voltage conversion voltage stabilizing circuit, a relay drive circuit, a PWM fan drive circuit, an ID identification isolation circuit, a 485 communication isolation circuit, a 232 communication isolation circuit, a single chip microcomputer MC9S12XEP100 interface circuit, a CAN communication isolation circuit and the like. The voltage conversion voltage stabilizing circuit outputs positive and negative 12V and 5V and other voltages, and provides stable and accurate power supplies for various control modules connected with the voltage conversion voltage stabilizing circuit.
The low-voltage slave control unit 31 mainly comprises an acquisition filter circuit, an ID identification isolation circuit, a singlechip MC9S08DZ60 interface circuit, a CAN communication isolation circuit and the like. The analog circuit (voltage and temperature acquisition) of the acquisition chip BQ76PL455 adopts a battery power supply to supply power, the digital circuit (communication) adopts an isolation power supply which is the same as the single chip microcomputer to supply power, the acquisition precision is higher and the numerical value is more stable by the processing mode, and meanwhile, the data uploading is more reliable by isolated CAN bus communication. And voltage acquisition of 6-16 series single batteries is supported, and 4-path differential temperature acquisition is supported.
The positive end and the negative end of the battery assembly after the battery packs are connected in series are connected with a high-voltage conversion control unit, and the high-voltage conversion control unit is connected with a high-voltage main control unit 35 through a 12V power supply, a current sampling and relay control wire harness.
High-pressure main control unit 35 changes the USB interface through CAN3 bus connection CAN, connects upper system, and high-pressure main control unit 35 still CAN change the USB interface through 485 bus connection simultaneously, connects upper system, upper system CAN be the host computer, but is not limited to the host computer.
Each battery pack is connected with the low-voltage slave control unit 31 through an independent voltage and temperature acquisition wiring harness 28, each low-voltage slave control unit 31 is connected with the high-voltage master control unit 35 through ID identification and a CAN1 bus, the low-voltage slave control unit 31 is connected with the low-voltage battery pack through the voltage and temperature acquisition wiring harness 28, voltage and temperature data acquisition monitoring is carried out on the low-voltage battery pack, and monitoring signals are transmitted to the high-voltage master control unit 35 through the ID identification and the CAN1 bus.
One high-voltage main control unit 35 can be matched with thirty low-voltage slave control units 31 at most, the low-voltage slave control units 31 are connected in series in a chain mode through connectors and cables, the tail-most low-voltage slave control unit 31 is directly connected with the high-voltage main control unit 35 through the connectors and the cables, the voltage requirements of current mainstream application battery systems such as a UPS (uninterrupted power supply), an energy storage system and an electric vehicle can be supported, and a high-voltage battery system required by corresponding voltage can be realized.
The high-voltage battery management system may comprise at least four low-voltage slave control units and one high-voltage master control unit, and the combination strategy describes a minimum application form of the battery management system required by the high-voltage battery system.
The high-voltage main control unit 35 can actively perform charge and discharge balance control on the battery cell by acquiring the battery cell data reported by the low-voltage slave control unit 31, so as to ensure that the battery cell achieves a balance effect and prolong the service life of the battery system.
When the data bus includes the system control unit 36, the mounted high-voltage main control unit 35 is no longer responsible for controlling the low-voltage slave control unit 31 to perform charge-discharge balance control on the battery cell of the battery system, and the control right is uniformly processed by the system control unit 36, so that the effect that the battery cell balance of the whole battery system can be realized is achieved, and the service life of the battery system is prolonged.
The plurality of low-voltage slave control units 31, the high-voltage conversion control unit and the high-voltage master control unit 35 are all connected with a 12V power supply and can obtain working power supply input from the 12V power supply together.
Finally, it should be pointed out that: the above examples are only for illustrating the technical solutions of the present invention, and are not limited thereto. Although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A high-voltage battery system comprises a high-voltage battery pack, a high-voltage battery management system and is characterized in that: the high-voltage battery pack is formed by connecting a plurality of battery packs in series, and the high-voltage battery management system is composed of low-voltage slave control units corresponding to the number of the battery packs, high-voltage conversion control units connected with positive and negative electrode buses of the batteries, and high-voltage main control units respectively connected with the low-voltage slave control units and the high-voltage conversion control units.
2. A high voltage battery system as claimed in claim 1, wherein: the low-voltage slave control unit is connected with the corresponding battery pack through a signal acquisition wiring harness, and the acquisition wiring harness is a voltage and temperature acquisition wiring harness.
3. A high voltage battery system according to claim 2, wherein: and the monitoring signals of the plurality of low-voltage slave control units for acquiring and monitoring the voltage and temperature data of the low-voltage battery pack are transmitted to the high-voltage master control unit through ID identification and a CAN1 bus.
4. A high voltage battery system as claimed in claim 1, wherein: and the high-voltage main control unit is connected with an upper system through a communication bus.
5. A high voltage battery system as claimed in claim 1, wherein: the high-voltage conversion control unit mainly comprises a switching power supply, a fuse, a power diode, a current divider, a power relay, a current sensor and the like, wherein the switching power supply performs voltage reduction and isolation processing on input high voltage to provide a 12V power supply, the fuse and the diode perform overcurrent and reverse connection prevention protection on a high-voltage main loop, and the relay performs charging and discharging and alarm switching processing.
6. A high voltage battery system as claimed in claim 1, wherein: the high-voltage main control unit mainly comprises a voltage conversion voltage stabilizing circuit, a relay driving circuit, a PWM fan driving circuit, an ID identification isolation circuit, a 485 communication isolation circuit, a 232 communication isolation circuit, a single chip microcomputer MC9S12XEP100 interface circuit, a CAN communication isolation circuit and the like, wherein the voltage conversion voltage stabilizing circuit outputs positive and negative 12V, 5V and other voltages to provide stable and accurate power supplies for various control modules connected with the voltage conversion voltage stabilizing circuit.
7. A high voltage battery system as claimed in claim 1, wherein: the low-voltage slave control unit mainly comprises an acquisition filter circuit, an ID identification isolation circuit, a single chip microcomputer MC9S08DZ60 interface circuit, a CAN communication isolation circuit and the like, wherein the analog circuit of a voltage and temperature acquisition chip BQ76PL455 is powered by a battery power supply, a communication digital circuit is powered by an isolation power supply which is the same as the single chip microcomputer, voltage acquisition of 6-16 series single batteries is supported, and 4 paths of differential temperature acquisition are supported.
8. A high voltage battery system as claimed in claim 1, wherein: each battery package is connected the low pressure from the accuse unit respectively through solitary voltage and temperature acquisition pencil, each low pressure is followed accuse unit and is passed through ID discernment and CAN1 bus connection to transmission to high-pressure main control unit, the low pressure is followed the control unit and is passed through voltage and temperature acquisition pencil and connect the low voltage battery package, carry out voltage and temperature data acquisition control to the low voltage battery package, and pass through ID discernment and CAN1 bus transmission to high-pressure main control unit with monitoring signal, the several low pressure is followed accuse unit, 12V power is all connected to high voltage conversion control unit and high voltage main control unit, CAN follow 12V power jointly and acquire work power supply input.
9. A high voltage battery system as claimed in claim 1, wherein: a high pressure main control unit can arrange thirty low pressure slave control units at most, and the low pressure is followed the control unit and is carried out the chain and concatenate through connector and cable, and the low pressure of rearmost end is followed the control unit and is directly connected through connector and cable and high pressure main control unit.
10. A high voltage battery system as claimed in claim 1, wherein: the high-voltage battery management system at least comprises four low-voltage slave control units and a high-voltage master control unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921698041.7U CN210608604U (en) | 2019-10-11 | 2019-10-11 | High-voltage battery system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921698041.7U CN210608604U (en) | 2019-10-11 | 2019-10-11 | High-voltage battery system |
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| CN210608604U true CN210608604U (en) | 2020-05-22 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110649678A (en) * | 2019-10-11 | 2020-01-03 | 联方云天科技(珠海)有限公司 | High-voltage battery system |
| CN113771690A (en) * | 2021-09-13 | 2021-12-10 | 上汽大众汽车有限公司 | Battery management system architecture |
-
2019
- 2019-10-11 CN CN201921698041.7U patent/CN210608604U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110649678A (en) * | 2019-10-11 | 2020-01-03 | 联方云天科技(珠海)有限公司 | High-voltage battery system |
| CN110649678B (en) * | 2019-10-11 | 2024-01-16 | 联方云天科技(珠海)有限公司 | High-voltage battery system |
| CN113771690A (en) * | 2021-09-13 | 2021-12-10 | 上汽大众汽车有限公司 | Battery management system architecture |
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