CN112217275A - Vehicle-mounted double-battery system - Google Patents
Vehicle-mounted double-battery system Download PDFInfo
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- CN112217275A CN112217275A CN202010946615.9A CN202010946615A CN112217275A CN 112217275 A CN112217275 A CN 112217275A CN 202010946615 A CN202010946615 A CN 202010946615A CN 112217275 A CN112217275 A CN 112217275A
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- 238000004891 communication Methods 0.000 claims abstract description 21
- 230000009977 dual effect Effects 0.000 claims description 26
- HEZMWWAKWCSUCB-PHDIDXHHSA-N (3R,4R)-3,4-dihydroxycyclohexa-1,5-diene-1-carboxylic acid Chemical compound O[C@@H]1C=CC(C(O)=O)=C[C@H]1O HEZMWWAKWCSUCB-PHDIDXHHSA-N 0.000 claims description 13
- 238000012544 monitoring process Methods 0.000 claims description 6
- 238000005070 sampling Methods 0.000 claims description 6
- 230000003139 buffering effect Effects 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 3
- 208000028659 discharge Diseases 0.000 description 3
- 239000004411 aluminium Substances 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Classifications
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- 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
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
-
- 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
-
- 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
- B60L58/18—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules
-
- 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
-
- 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
-
- 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)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Secondary Cells (AREA)
- Battery Mounting, Suspending (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses a vehicle-mounted double-battery system, which comprises: a first battery pack; a second battery pack; the PUD module comprises a BCMU module and a first BMU module; a second BMU module; the first battery pack is connected with the first BMU module, the second battery pack is connected with the second BMU module, the first BMU module and the second BMU module collect first battery pack data and second battery pack data respectively, the BCMU module is in communication connection with the first BMU module and the second BMU module respectively, the BCMU module comprises an internal communication interface and an external communication interface and is used for obtaining the first battery pack data and the second battery pack data and transmitting the first battery pack data and the second battery pack data to the outside.
Description
Technical Field
The invention relates to the field of batteries, in particular to a vehicle-mounted double-battery system
Background
At present, most of vehicle-mounted battery systems are low-voltage and high-capacity systems, and the charging and discharging currents of the existing vehicle-mounted battery systems are large, so that the temperature of the battery is increased, the battery loss is accelerated, and the service life of the battery is influenced. And current on-vehicle battery system adopts ternary material battery or lead acid battery as battery module electricity core usually, and this type electricity core is easy thermal runaway, arouses the naked light to the use of stepping up of current battery module leads to energy conversion inefficiency, is unfavorable for the continuation use of on-vehicle battery.
Disclosure of Invention
One of the purposes of the invention is to provide a vehicle-mounted dual battery system, which adopts a battery management system with a secondary architecture and is used for managing different battery packs, wherein the different battery packs are installed in a detachable mode, and communication and power supply are realized through foolproof plugs, so that the applicability of the vehicle-mounted dual battery system can be effectively improved, and the vehicle-mounted dual battery system is convenient to transport, install, charge and discharge.
Another object of the present invention is to provide a vehicle-mounted dual battery system, wherein the vehicle-mounted dual battery system uses a lithium iron phosphate battery as a battery cell of a battery module, and has high energy density and energy conversion efficiency, such that the vehicle-mounted dual battery system has a small volume and is convenient to transport and carry.
Another object of the present invention is to provide a vehicle-mounted dual battery system, wherein a fuse is disposed on an input/output circuit of each battery pack of the vehicle-mounted dual battery system, so that electrical safety of each individual battery pack can be guaranteed during transportation or installation, and a risk caused by a high voltage current generated inside a battery cell can be effectively prevented.
Another object of the present invention is to provide a vehicle-mounted dual battery system, wherein a DCDC module and a PDU module are disposed in the vehicle-mounted dual battery system, and the DCDC module is configured to convert a battery voltage, supply power to the PDU module, and perform internal configuration of the PDU module.
Another object of the present invention is to provide a vehicle-mounted dual battery system having a pre-charging function, in which a pre-charging resistor and a pre-charging relay are disposed in a PDU module, so as to effectively prevent a high voltage current generated at an initial discharge stage from damaging the PDU module, a battery cell, and a battery pack.
In order to achieve at least one of the above-mentioned objects, the present invention further provides a vehicle-mounted dual battery system, including:
a first battery pack;
a second battery pack;
the PUD module comprises a BCMU module and a first BMU module;
a second BMU module;
the first battery pack is connected with the first BMU module, the second battery pack is connected with the second BMU module, the first BMU module and the second BMU module collect first battery pack data and second battery pack data respectively, the BCMU module is in communication connection with the first BMU module and the second BMU module respectively, the BCMU module comprises an internal communication interface and an external communication interface and is used for obtaining the first battery pack data and the second battery pack data and transmitting the first battery pack data and the second battery pack data to the outside.
According to one preferred embodiment of the present invention, the PDU module is mounted in the first battery pack, the PDU module includes a first fuse and a first bus bar, the first bus bar is connected to the first battery pack, and the first fuse is connected to the first bus bar for protecting the PDU module and the battery module of the first battery pack.
According to a preferred embodiment of the present invention, the second battery pack connects a second bus bar and a second fuse, and the second fuse connects the second bus bar for protecting the second battery pack.
According to a preferred embodiment of the present invention, the PDU module further includes a DCDC module and a shunt, the DCDC module is connected to the BCMU module, the DCDC module is used for supplying power to the PDU module, and the shunt is located in the PDU module and is used for collecting the total loop current.
According to a preferred embodiment of the present invention, the PDU module further comprises a pre-charge resistor and a pre-charge relay electrically connected to the BCMU module for buffering a starting current to protect the PDU module and the first and second battery packs.
According to a preferred embodiment of the present invention, the power output terminals are respectively connected to the first BMU module and the second BMU module for supplying power to the first BMU module and the second BMU module.
According to a preferred embodiment of the present invention, the first BMU module and the second BMU module include a temperature sampling harness and a voltage sampling harness, and the temperature sampling harness is respectively connected to the first BMU module and the second BMU module and is respectively used for collecting the temperature and the voltage of the first battery pack and the second battery pack.
According to a preferred embodiment of the present invention, the BCMU module includes a total pressure monitoring terminal, and the total pressure monitoring terminal is connected to a total busbar located in the first battery pack, for calculating a total loop voltage.
According to a preferred embodiment of the present invention, the BCMU module has two external output terminals, and the external output terminals communicate with each other using RS-485 protocol for transmitting the first battery pack and the second battery pack data.
Drawings
FIG. 1 is a schematic diagram showing a circuit structure of a vehicle-mounted dual battery system according to the present invention;
FIG. 2 is a schematic diagram showing a first battery pack mounting structure of a vehicle-mounted dual battery system according to the present invention;
fig. 3 is a schematic view showing an installation structure of a second battery pack of a vehicle-mounted dual battery system according to the present invention.
Wherein the content of the first and second substances,
the battery pack comprises a first battery pack-10, a second battery pack-20, a second fuse-21, a second bus-22, a second BMU module-23, a PDU module-30, a BCMU module-31, a pre-charging resistor-311, a pre-charging relay-312, a shunt-313, a main positive relay-314, a first BMU module-32, a first bus-33, a first fuse-34, a DCDC module-35, an electric energy input terminal-36, an electric energy output terminal-37, a total pressure monitoring terminal-38, an internal communication terminal-391 and an external communication terminal-392.
Detailed Description
The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The underlying principles of the invention, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the invention.
It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for ease of description and simplicity of description, and do not indicate or imply that the referenced devices or components must be in a particular orientation, constructed and operated in a particular orientation, and thus the above terms are not to be construed as limiting the present invention.
It is understood that the terms "a" and "an" should be interpreted as meaning that a number of one element or element is one in one embodiment, while a number of other elements is one in another embodiment, and the terms "a" and "an" should not be interpreted as limiting the number.
Referring to fig. 1 to 3, the present invention discloses a vehicle-mounted dual battery system, which includes a first battery pack 10 and a second battery pack 20, wherein the first battery pack 10 and the second battery pack 20 are respectively mounted in different cases, the first battery pack 10 and the second battery pack 20 have a plurality of battery modules, the battery modules of the first battery pack 10 and the second battery pack 20 are respectively arranged on a bottom plate of the case in a single layer, and the first battery pack 10 and the second battery pack 20 are connected by a waterproof plug wire. Further, the dual battery system includes a PDU module 30 and a second BMU module 23, the PDU module 30 includes a first BMU module 32 and a BCMU module 31, and the BCMU module 31 electrically connects the first BMU module 32 and the second BMU module 23. Specifically, the BCMU module 31 includes two internal communication terminals 391, and correspondingly, the first BMU module 32 and the second BMU module 23 respectively have two internal communication terminals 391, wherein the internal communication terminals 391 of the first BMU module 32 and the second BMU module 23 are connected to the corresponding internal communication terminals 391 of the BCMU module 31 by waterproof plug wires, so that the BCMU module 31 can collect data of the first BMU module 32 and the second BMU module 23 through the two internal communication terminals 391, wherein the first BMU module 32 and the second BMU module 23 have terminals including, but not limited to, a temperature collecting terminal and a voltage collecting terminal, which are respectively connected to a temperature collecting harness and a voltage collecting harness, wherein the other ends of the temperature collecting harness and the voltage collecting harness are connected to each battery module, specifically to connect a temperature sensor and a voltage sensor in each battery module, so that the temperature and voltage in the first and second battery packs 10 and 20, respectively, can be collected. The first BMU module 32 and the second BMU module 23 further have an equalizing terminal respectively, and the equalizing terminal is connected to each battery module and is used for controlling the input and output power of each battery.
The BCMU module 31 further includes two power input terminals 36 and two power output terminals 37, the two power input terminals 36 and the two power output terminals 37 respectively include positive and negative terminals, the two power input terminals 36 are electrically connected to the first battery pack 10, and the two power output terminals 37 are connected to the first BMU module 32 and the second BMU module 23, and are configured to supply power to the first BMU module 32 and the second BMU module 23. Specifically, the PDU module 30 further includes a DCDC module 35, the DCDC module 35 is connected to the BCMU module 31, and a suitable power supply is provided for the BCMU module 31 through a voltage reduction function of the DCDC module 35, so that in the present invention, the PDU module 30 can realize internal power supply of the on-vehicle dual battery system, so as to improve field adaptability of the on-vehicle dual battery system, the BCMU module 31 further has a total pressure monitoring terminal 38, the first battery pack 10 is further connected to a total bus bar, and the total pressure monitoring terminal 38 is connected to the total bus bar of the first battery pack 10, so as to obtain an external input or output voltage, which is used for the BCMU module 31 to adjust a power supply configuration of the PDU module 30.
More specifically, the PDU module 30 includes a first fuse 34 and a first bus bar 33, the first battery pack 10 is connected to the first bus bar 33, the first bus bar 33 is connected to the first fuse 34, and the fuse is used for cutting off the input and output work of the first battery pack 10 and/or the second battery pack 20 when the first battery pack 10 and/or the second battery pack 20 exceeds a critical current. The PDU module 30 further includes a shunt 313, wherein the shunt 313 is used for collecting a loop current and uploading the loop current to the BCMU module 31, a processing chip is disposed in the BCMU module 31, when collecting a temperature, a current, and a voltage of a battery module in each battery pack, data such as SOC, SOH, and accumulated charge/discharge cycle of each battery pack can be further measured and calculated through processing logic in the BCMU module 31, the BCMU module 31 further includes two external communication terminals 392, wherein the external communication terminals 392 are connected to include, but not limited to, an RS-485 cable, and are used for outputting battery pack data to the outside.
Further, the PDU module 30 further includes a pre-charging resistor 311 and a pre-charging relay 312, the pre-charging resistor 311 and the pre-charging relay 312 are used for buffering the starting current, wherein the PDU further includes a main positive relay 314, and the main positive relay 314 is used for controlling the power-on of the device. The pre-charging resistor 311 and the pre-charging relay 312 may be used to initialize the vehicle-mounted dual-battery system, specifically, the BCMU module 31 collects data of each battery pack, and determines whether the data is abnormal, if the data is abnormal, the BCMU module 31 controls all relays to be turned on, the vehicle-mounted dual-battery system is in a disconnected state, and cannot output or input work, when the data of the battery pack is abnormal, the pre-charging relay 312 is turned off, the pre-charging resistor 311 may limit a starting current, the BCMU module 31 further detects whether an external capacitor is fully charged, and if the data is fully charged, the pre-charging relay 312 is turned on and further turns off a main positive relay, so that the battery can stably output or input work. Avoid the initial voltage difference of high strength to cause the damage to internal circuit and external circuit, PDU module 30 still includes switch and pilot lamp, the switch is connected DCDC for on-vehicle bi-battery system goes up, the pilot lamp communication is connected BCMU module 31, works as BCMU module 31 judges whether unusual according to the battery package data of gathering, if unusual then through the pilot lamp sends out warning information.
Further, the second battery pack 20 is connected to a second fuse 21, the second fuse 21 is connected to a second bus bar 22, the second bus bar 22 is electrically connected to the second battery pack 20, and is configured to automatically cut off external input or output of the second battery pack 20 when the second battery pack 20 is short-circuited, where the second battery pack 20 is connected to the second BMU module 23, the second BMU module 23 is configured to collect parameters such as temperature and voltage in the second battery pack 20, which may effectively improve circuit safety of the second battery pack 20 in a non-charging state, and the second BMU module 23 is further configured to equalize outputs of different battery modules in the second battery pack 20. It should be noted that the busbar includes soft copper bar and the compound pole piece of copper aluminium bar that adopts the cold rolling technology to make, wherein soft copper bar with the compound pole piece of copper aluminium bar is connected first battery package 10 and second battery package 20 can reduce external output pressure drop, reduce the internal resistance and generate heat, also keeps the toughness of the internal connection of battery package simultaneously.
It will be understood by those skilled in the art that the embodiments of the present invention described above and illustrated in the drawings are given by way of example only and not by way of limitation, the objects of the invention having been fully and effectively achieved, the functional and structural principles of the present invention having been shown and described in the embodiments, and that various changes or modifications may be made in the embodiments of the present invention without departing from such principles.
Claims (9)
1. A vehicle-mounted dual battery system, comprising:
a first battery pack;
a second battery pack;
the PUD module comprises a BCMU module and a first BMU module;
a second BMU module;
the first battery pack is connected with the first BMU module, the second battery pack is connected with the second BMU module, the first BMU module and the second BMU module collect first battery pack data and second battery pack data respectively, the BCMU module is in communication connection with the first BMU module and the second BMU module respectively, the BCMU module comprises an internal communication interface and an external communication interface and is used for obtaining the first battery pack data and the second battery pack data and transmitting the first battery pack data and the second battery pack data to the outside.
2. The vehicle-mounted dual battery system of claim 1, wherein the PDU module is mounted in the first battery pack, the PDU module comprises a first fuse and a first bus bar, the first bus bar is connected with the first battery pack, and the first fuse is connected with the first bus bar and is used for protecting the PDU module and the battery module of the first battery pack.
3. The on-board dual battery system of claim 2, wherein the second battery pack connects a second bus bar and a second fuse, the second fuse connecting the second bus bar for protecting the second battery pack.
4. The vehicle-mounted dual battery system of claim 1, wherein the PDU module further comprises a DCDC module and a shunt, the DCDC module is connected to the BCMU module, the DCDC module is configured to supply power to the PDU module, and the shunt is located within the PDU module and configured to draw a total loop current.
5. The vehicle-mounted dual battery system of claim 2, wherein the PDU module further comprises a pre-charge resistor and a pre-charge relay electrically connected to the BCMU module for buffering a starting current.
6. The vehicle-mounted dual-battery system according to claim 4, wherein the power output terminals are respectively connected with the first BMU module and the second BMU module and used for supplying power to the first BMU module and the second BMU module.
7. The vehicle-mounted dual battery system of claim 1, wherein the first BMU module and the second BMU module comprise a temperature sampling harness and a voltage sampling harness, and the temperature sampling harness is respectively connected with the first BMU module and the second BMU module and is respectively used for collecting the temperature and the voltage of the first battery pack and the second battery pack.
8. The vehicle-mounted dual battery system of claim 1, wherein the BCMU module comprises a total pressure monitoring terminal connected to a total busbar located within the first battery pack for calculating a total loop voltage.
9. The vehicle-mounted dual-battery system according to claim 1, wherein the BCMU module has two external output terminals, and the external output terminals adopt RS-485 protocol for external communication and are used for transmitting the first battery pack data and the second battery pack data.
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| CN202010946615.9A CN112217275A (en) | 2020-09-10 | 2020-09-10 | Vehicle-mounted double-battery system |
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| CN202010946615.9A CN112217275A (en) | 2020-09-10 | 2020-09-10 | Vehicle-mounted double-battery system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114006059A (en) * | 2021-10-29 | 2022-02-01 | 蜂巢能源科技有限公司 | Battery module and battery pack with same |
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| US5850351A (en) * | 1996-04-25 | 1998-12-15 | General Motors Corporation | Distributed management apparatus for battery pack |
| WO2010012187A1 (en) * | 2008-07-28 | 2010-02-04 | 奇瑞汽车股份有限公司 | Distributed battery management system and management method thereof |
| CN203445668U (en) * | 2013-09-23 | 2014-02-19 | 安徽江淮汽车股份有限公司 | Distributed battery management system |
| CN206379435U (en) * | 2016-12-29 | 2017-08-04 | 比亚迪股份有限公司 | battery management system and automobile |
| CN106956599A (en) * | 2017-05-09 | 2017-07-18 | 武汉微氢新能源有限公司 | The self-loopa charge and discharge device and power assembly system of electric automobile |
| CN207925612U (en) * | 2018-01-18 | 2018-09-28 | 宁波吉利汽车研究开发有限公司 | A kind of distributed battery management system |
| CN109860741A (en) * | 2019-02-27 | 2019-06-07 | 广州宝狮新能源有限公司 | A kind of compatible fault-tolerant large-sized battery series connection and PCS parallel system |
| CN209329747U (en) * | 2019-02-27 | 2019-08-30 | 广州宝狮新能源有限公司 | A kind of compatible fault-tolerant large-sized battery train |
| CN212811374U (en) * | 2020-09-10 | 2021-03-26 | 浙江衡睿科技有限公司 | Vehicle-mounted double-battery system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114006059A (en) * | 2021-10-29 | 2022-02-01 | 蜂巢能源科技有限公司 | Battery module and battery pack with same |
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