CN112644329A - Battery electronic component capable of managing 48-string battery cells - Google Patents
Battery electronic component capable of managing 48-string battery cells Download PDFInfo
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- CN112644329A CN112644329A CN202011216942.5A CN202011216942A CN112644329A CN 112644329 A CN112644329 A CN 112644329A CN 202011216942 A CN202011216942 A CN 202011216942A CN 112644329 A CN112644329 A CN 112644329A
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- 238000004891 communication Methods 0.000 claims abstract description 35
- 238000002955 isolation Methods 0.000 claims abstract description 28
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 5
- 229910052744 lithium Inorganic materials 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 238000013500 data storage Methods 0.000 claims description 3
- 239000000178 monomer Substances 0.000 claims description 3
- 238000007726 management method Methods 0.000 description 9
- 230000005540 biological transmission Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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Classifications
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- 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
- 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
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
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- 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
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
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- 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
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M2010/4278—Systems for data transfer from batteries, e.g. transfer of battery parameters to a controller, data transferred between battery controller and main controller
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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
- 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
-
- 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
-
- 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
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Life Sciences & Earth Sciences (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Secondary Cells (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a battery electronic component capable of managing 48 strings of battery cells, which comprises a battery electronic component, a battery assembly and an upper computer, wherein the battery electronic component comprises four front-end acquisition chips, a transformer isolation chip, a controller, a system power circuit and an isolation CAN communication circuit, every two front-end acquisition chips are in a group, and every two front-end acquisition chips are electrically connected in a daisy chain mode. The battery electronic component capable of managing 48 strings of battery cells is designed in a serial-parallel connection mode through the fact that the battery electronic component comprises four front-end acquisition chips, a transformer isolation chip, a controller, a system power circuit and an isolation CAN communication circuit.
Description
Technical Field
The invention relates to the technical field of new energy automobile battery management, in particular to a battery electronic component capable of managing 48 strings of battery cores.
Background
With the deepening of energy crisis and the enhancement of environmental protection consciousness, the development speed of new energy automobiles is changing day by day, and in the past decades, pure electric vehicles, hybrid electric vehicles, fuel cell vehicles and related part technologies thereof have been greatly developed, and the world automobile industry is undergoing the transition and development from traditional fuel oil vehicles to future hydrogen fuel cell vehicles.
The safe operation of electric automobile lithium cell leaves reliable and stable battery management system, current battery management system's design scheme, and the front end is gathered the scheme that the chip mostly adopts single parallelly connected or series connection and is cascaded, and single cascade scheme has restricted the cascade quantity of front end collection chip.
Because the requirement of the electric automobile for the endurance mileage is higher and higher, the number of the assembled battery monomer strings is more and more, the front-end acquisition chip of the existing battery electronic component mostly adopts a single parallel or serial connection mode, for the parallel scheme, as the number of the battery strings is increased, the number of the parallel branches is also increased, so that the structure of the battery management system is more complicated, because each parallel branch needs to be electrically isolated by adopting a transformer isolation mode to ensure the safe and reliable operation of the battery management unit, therefore, the increase of the isolation transformer will result in the increase of the production cost of the battery management unit, and for the serial scheme, the more the number of the front-end acquisition chips is in series, the lower the communication stability is, the risk of data transmission error exists, the electric automobile is a potential safety hazard, and the problems are not favorable for popularization of the electric automobile.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a battery electronic component capable of managing 48 strings of battery cores, which solves the problems that the structure of a battery management system is more complex, the production cost of a battery management unit is increased due to the increase of an isolation transformer, the more the front-end acquisition chips are connected in series, the lower the communication stability is, the risk of data transmission errors exists, and the potential safety hazard exists for electric vehicles.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: the utility model provides a CAN manage battery electronic parts of 48 cluster electric cores, includes battery electronic parts, battery pack and host computer, battery electronic parts includes that four front ends gather chip, transformer and keep apart chip, controller, system power supply circuit and keep apart CAN communication circuit, per two the chip is gathered to the front end is a set of, per two through daisy chain mode electric connection between the chip is gathered to the front end, the wiring end of chip is gathered to the front end and the wiring end electric connection of transformer isolation chip, the wiring end of chip and the wiring end electric connection of controller are kept apart to the transformer, the wiring end of controller respectively with system power supply circuit and keep apart CAN communication circuit's wiring end electric connection.
Preferably, the wiring ends of the four front-end acquisition chips are electrically connected with the wiring end of the battery assembly, and the wiring end of the battery electronic component is electrically connected with the wiring end of the upper computer.
Preferably, each group of front-end acquisition chips and the controller are communicated in an SPI communication mode, and the battery electronic component has the functions of voltage data acquisition, battery temperature data acquisition, battery voltage balance, fault information alarm, CAN communication, power supply voltage conversion and historical data storage.
Preferably, the front-end acquisition chip is used for acquiring the voltage and the temperature of the battery and balancing the battery monomer with higher voltage in the battery.
Preferably, the front-end acquisition chip has two sets of serial port pins respectively designated as a low side and a high side, and one chip selection input or output line is arranged in the two serial ports of the low side and the high side of the front-end acquisition chip.
Preferably, the transformer isolation chip is used for isolating a high voltage formed by the lithium battery from the working voltage of the controller.
Preferably, the system power circuit is used for providing a stable 5V working voltage for the battery electronic components, and the system power circuit is provided with a DC-DC converter which is used for converting an externally provided 12V or 24V power supply into a stable 5V voltage.
Preferably, the isolated CAN communication circuit provides a CAN communication function for the battery electronic component, and the upper computer is a host BMU or upper computer software of the battery system.
(III) advantageous effects
The invention provides a battery electronic component capable of managing 48 strings of cells. Compared with the prior art, the method has the following beneficial effects:
(1) the battery electronic component capable of managing 48 strings of battery cores comprises four front-end acquisition chips, a transformer isolation chip, a controller, a system power circuit and an isolation CAN communication circuit, wherein every two front-end acquisition chips are in a group, every two front-end acquisition chips are electrically connected in a daisy chain mode, wiring ends of the front-end acquisition chips are electrically connected with wiring ends of the transformer isolation chips, wiring ends of the transformer isolation chips are electrically connected with wiring ends of the controller, wiring ends of the controller are respectively electrically connected with wiring ends of the system power circuit and the isolation CAN communication circuit, each battery electronic component comprises 4 front-end acquisition chips, every two front-end acquisition chips are in a group, the front-end acquisition chips in each group are connected in a daisy chain mode, and the first front-end acquisition chip of each group of daisy chain is communicated with the controller through an independent SPI, the battery electronic parts designed by the invention are designed in a series-parallel connection mode, so that the condition that each battery electronic part can acquire a large amount of battery voltage information is ensured, and the transmission efficiency of battery voltage data and the stability of information transmission are ensured.
(2) This can manage battery electronic parts of 48 cluster electricity cores, gather through every group front end and adopt SPI communication mode to communicate between chip and the controller, two sets of front end are gathered the chip and are adopted two independent SPI communication interfaces and communicate with the controller, the controller passes through command and the control signal that the SPI interface sent, transmit in proper order on the daisy chain, realize the control and the data reading and writing of controller to every group front end collection chip, adopt two independent SPI interfaces, can reduce the data bulk of every daisy chain, increase data transmission's stability, improve battery management system's security performance.
(3) The battery electronic component capable of managing 48 battery cells is characterized in that a front-end acquisition chip is provided with two groups of serial port pins which are respectively designated as a low side and a high side, one chip selection input or output line is arranged in two serial ports of the low side and the high side of the front-end acquisition chip, each front-end acquisition chip is provided with two groups of serial port pins which are designated as a low side and a high side, and the ports of the low side and the high side can ensure that a plurality of front-end acquisition chips can be connected in a daisy chain manner, the front-end acquisition chips can normally work even if working at different power supply voltages, the transmission of information is ensured in turn, and the front-end acquisition chips can be connected in series with each other in the daisy chain cascade manner between the low side and the high side.
Drawings
Fig. 1 is a schematic view showing the structure of an electronic part of a battery according to the present invention.
In the figure, 100 battery electronic components, 200 controllers, 300 transformer isolation chips, 400 front-end acquisition chips, 500 isolation CAN communication circuits, 600 system power circuits, 700 battery packs and 800 upper computers.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, an embodiment of the present invention provides a technical solution: a battery electronic component capable of managing 48 strings of battery cells comprises a battery electronic component 100, a battery assembly 700 and an upper computer 800, wherein the battery electronic component 100 is provided with a plurality of chips and is designed in a series-parallel connection combination mode, the battery electronic component 100 comprises four front-end acquisition chips 400, a transformer isolation chip 300, a controller 200, a system power circuit 600 and an isolation CAN communication circuit 500, every two front-end acquisition chips 400 form a group, every two front-end acquisition chips 400 are electrically connected in a daisy chain mode, the two groups of front-end acquisition chips 400 are communicated with the controller 200 by adopting two independent SPI communication interfaces, the controller 200 sequentially transmits commands and control signals sent by the SPI interfaces on the daisy chain to realize the control and data reading and writing of each group of front-end acquisition chips 400 by the controller 200, and terminals of the front-end acquisition chips 400 are electrically connected with terminals of the transformer isolation chip 300, the terminals of the transformer isolation chip 300 are electrically connected to the terminals of the controller 200, and the terminals of the controller 200 are electrically connected to the terminals of the system power supply circuit 600 and the isolated CAN communication circuit 500, respectively.
In the embodiment of the present invention, the terminals of the four front-end acquisition chips 400 are electrically connected to the terminals of the battery assembly 700, and the terminals of the battery electronic component 100 are electrically connected to the terminals of the upper computer 800.
In the embodiment of the present invention, each group of front end acquisition chips 400 communicates with the controller 200 in an SPI communication manner, the daisy chain cascade relationship between the controller 200 and each group of front end acquisition chips 400 is from near to far, communication data is also transmitted in series from near to far according to the cascade sequence of the front end acquisition chips 400, and the battery electronic component 100 has the functions of voltage data acquisition, battery temperature data acquisition, battery voltage equalization, fault information alarm, CAN communication, power supply voltage conversion, and historical data storage.
In the embodiment of the present invention, the front-end acquisition chip 400 is used for acquiring the voltage and the temperature of the battery and balancing the battery cells with higher voltage in the battery.
In the embodiment of the present invention, the front-end acquisition chip 400 has two groups of serial port pins respectively designated as a low side and a high side, one chip selection input or output line is provided in the two serial ports of the low side and the high side of the front-end acquisition chip 400, and the high-side front-end acquisition chip 400 controls the chip selection input line of the low-side front-end acquisition chip 400 to receive and send data by pulling down the chip selection output line, thereby sequentially ensuring the transmission of information.
In the embodiment of the present invention, the transformer isolation chip 300 is used to isolate the high voltage formed by the lithium battery from the operating voltage of the controller 200.
In the embodiment of the present invention, the system power circuit 600 is used to provide a stable 5V operating voltage for the battery electronic component 100, and the system power circuit 600 has a DC-DC converter therein for converting an externally provided 12V or 24V power into a stable 5V voltage.
In the embodiment of the present invention, the isolated CAN communication circuit 500 provides a CAN communication function for the battery electronic components 100, the upper computer 800 is a host BMU or upper computer software of the battery system, the plurality of battery electronic components 100 are connected to a CAN bus of the upper computer 800 through the isolated CAN communication circuit 500, and the upper computer 800 reads and processes information detected by each battery electronic component 100.
When the device is used, every two front-end acquisition chips 400 are in a group and are connected in a daisy chain manner, each group of front-end acquisition chips 400 is communicated with the controller 200 in an SPI communication manner and is used for reading the battery voltage and temperature data acquired by the group of front-end acquisition chips 400, an isolation transformer chip 300 is additionally arranged between the acquisition chips 400 and the controller 200 and is used for isolating the high voltage formed by the lithium battery from the working voltage of the controller 200, a chip selection input or output line is additionally arranged in two serial ports of the low side and the high side of the front-end acquisition chips 400, the low level of the selection input or output line is effective, the high-side front-end acquisition chip 400 enables a chip selection input line of the low-side front-end acquisition chip 400 by pulling down the chip selection output line to control the low-side front-end acquisition chips, so as to ensure the transmission of information in turn, and the front-end acquisition chips 400 are communicated with the controller 200 in the SPI communication manner, the system power supply circuit 600 is mainly used for providing stable 5V working voltage for the battery electronic components 100, isolating the CAN communication circuit 500 and providing a CAN communication function for the battery electronic components 100, wherein the plurality of battery electronic components 100 are connected to a CAN bus of the upper computer 800 through the isolated CAN communication circuit 500, and the upper computer 800 reads and processes information detected by each battery electronic component 100.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. A battery electronics component capable of managing 48 strings of cells, comprising battery electronics component (100), battery assembly (700), and upper computer (800), characterized in that: the battery electronic component (100) comprises four front-end acquisition chips (400), a transformer isolation chip (300), a controller (200), a system power circuit (600) and an isolation CAN communication circuit (500), every two front-end acquisition chips (400) are in a group, every two front-end acquisition chips (400) are electrically connected in a daisy chain mode, terminals of the front-end acquisition chips (400) are electrically connected with terminals of the transformer isolation chip (300), terminals of the transformer isolation chip (300) are electrically connected with terminals of the controller (200), and terminals of the controller (200) are respectively electrically connected with terminals of the system power circuit (600) and the isolation CAN communication circuit (500).
2. The battery electronics of claim 1, wherein the battery electronics are configured to manage 48 strings of cells, and wherein: the terminals of the four front-end acquisition chips (400) are electrically connected with the terminals of the battery assembly (700), and the terminals of the battery electronic component (100) are electrically connected with the terminals of the upper computer (800).
3. The battery electronics of claim 1, wherein the battery electronics are configured to manage 48 strings of cells, and wherein: each group of front-end acquisition chips (400) is communicated with the controller (200) in an SPI communication mode, and the battery electronic component (100) has the functions of voltage data acquisition, battery temperature data acquisition, battery voltage balance, fault information alarm, CAN communication, power supply voltage conversion and historical data storage.
4. The battery electronics of claim 1, wherein the battery electronics are configured to manage 48 strings of cells, and wherein: the front-end acquisition chip (400) is used for acquiring the voltage and the temperature of the battery and balancing the battery monomer with higher voltage in the battery.
5. The battery electronics of claim 1, wherein the battery electronics are configured to manage 48 strings of cells, and wherein: the front-end acquisition chip (400) is provided with two groups of serial port pins which are respectively designated as a low side and a high side, and one chip selection input or output line is arranged in two serial ports of the low side and the high side of the front-end acquisition chip (400).
6. The battery electronics of claim 1, wherein the battery electronics are configured to manage 48 strings of cells, and wherein: the transformer isolation chip (300) is used for isolating high voltage formed by the lithium battery and working voltage of the controller (200).
7. The battery electronics of claim 1, wherein the battery electronics are configured to manage 48 strings of cells, and wherein: the system power supply circuit (600) is used for providing stable 5V working voltage for the battery electronic component (100), and a DC-DC converter is arranged in the system power supply circuit (600) and used for converting externally provided 12V or 24V power supply into stable 5V voltage.
8. The battery electronics of claim 1, wherein the battery electronics are configured to manage 48 strings of cells, and wherein: the isolated CAN communication circuit (500) provides a CAN communication function for the battery electronic component (100), and the upper computer (800) is a host BMU or upper computer software of the battery system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011216942.5A CN112644329A (en) | 2020-11-04 | 2020-11-04 | Battery electronic component capable of managing 48-string battery cells |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011216942.5A CN112644329A (en) | 2020-11-04 | 2020-11-04 | Battery electronic component capable of managing 48-string battery cells |
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| CN112644329A true CN112644329A (en) | 2021-04-13 |
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| CN202011216942.5A Pending CN112644329A (en) | 2020-11-04 | 2020-11-04 | Battery electronic component capable of managing 48-string battery cells |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112440820A (en) * | 2020-11-05 | 2021-03-05 | 天津恒天新能源汽车研究院有限公司 | Front-end acquisition chip cascade scheme for battery electronic component |
| CN112505572A (en) * | 2020-11-20 | 2021-03-16 | 山东氢探新能源科技有限公司 | Fuel cell fault diagnosis device and method based on single voltage difference |
| CN115372825A (en) * | 2022-08-10 | 2022-11-22 | 安徽卓越电气有限公司 | Single voltage and single temperature composite acquisition circuit of explosion-proof battery system and data sequencing control method thereof |
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| CN115372825A (en) * | 2022-08-10 | 2022-11-22 | 安徽卓越电气有限公司 | Single voltage and single temperature composite acquisition circuit of explosion-proof battery system and data sequencing control method thereof |
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