CN111342151A - Integrated battery pack - Google Patents
Integrated battery pack Download PDFInfo
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- CN111342151A CN111342151A CN202010128605.4A CN202010128605A CN111342151A CN 111342151 A CN111342151 A CN 111342151A CN 202010128605 A CN202010128605 A CN 202010128605A CN 111342151 A CN111342151 A CN 111342151A
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- 238000001514 detection method Methods 0.000 claims abstract description 52
- 238000006243 chemical reaction Methods 0.000 claims abstract description 28
- 238000001816 cooling Methods 0.000 claims description 17
- 239000002184 metal Substances 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 238000007599 discharging Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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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
-
- 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
- B60L58/12—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
-
- 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
-
- 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
- B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
- B60L58/26—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by cooling
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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
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
- H01M10/486—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring temperature
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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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
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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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—Vehicles
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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
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/54—Drive Train control parameters related to batteries
- B60L2240/545—Temperature
-
- 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
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/54—Drive Train control parameters related to batteries
- B60L2240/547—Voltage
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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
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/54—Drive Train control parameters related to batteries
- B60L2240/549—Current
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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
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- General Chemical & Material Sciences (AREA)
- Electrochemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Chemical & Material Sciences (AREA)
- Sustainable Energy (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Power Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Secondary Cells (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses an integrated battery pack and an automobile, comprising: a battery module and a controller coupled to each other; the battery module comprises battery packs and battery pack detection units coupled with the battery packs in a one-to-one correspondence mode; the controller includes: the system comprises a micro-control unit, a battery management unit coupled with the micro-control unit, a current detection unit coupled with the battery management unit, a mode switching unit coupled with the battery management unit, a vehicle-mounted charging unit coupled with the micro-control unit, and a voltage conversion unit coupled with the micro-control unit, the battery management unit and the vehicle-mounted charging unit; the battery pack detection unit is coupled with the battery management unit; the current detection unit is coupled with the positive electrode or the negative electrode of the battery pack; the mode switching unit is coupled with a positive electrode and a negative electrode of the battery pack. According to the invention, high-voltage components are integrated and built in, so that the high-voltage components which leak outwards are reduced, and the system is safer and more reliable.
Description
Technical Field
The invention relates to the technical field of electric automobiles, in particular to an integrated battery pack.
Background
With the popularization of new energy vehicles, power battery systems of the new energy vehicles are more and more concerned by people. The power battery can safely provide the maximum discharging power and charging power for the vehicle power system under different working conditions. The power battery system comprises a charging and discharging relay, a control diagnosis unit, a battery and battery management unit, a power current acquisition unit, a high-voltage acquisition unit, a thermal management component, a control module and the like. The allocation of these functional modules is critical to the safety and cost of the power cell. The arrangement and connection of these modules in the battery pack must therefore be planned.
The existing battery pack system divides these functional modules into bdu (battery disconnect unit), bms (battery management system). The BDU mainly comprises a high-voltage relay, a high-voltage fuse, a pre-charging resistor and the like. BMS is further classified into BMU (Battery management Unit), CVS (Current Voltage sensor), CSC (cell maintenance Circuit). The BMU is responsible for logic control and communication and coordinates the work of each module, the CVS is responsible for collecting current, voltage, insulation detection and diagnosing relay faults, and the CSC is responsible for the management of the battery module.
The existing battery pack causes high cost of the battery pack in such a separate BDU and BMS arrangement. The products are respectively fixed inside the battery pack, and connecting these modules also brings additional connectors and wiring harnesses, which additionally increases the cost of fixing the installation space. The high voltage and the low voltage of the product are scattered in each module of the battery pack, and although the battery pack can be protected through additional insulation, the potential safety hazard still exists. With the development of new energy vehicles, it is imperative to improve the safety of a battery pack system and reduce the cost of products.
Therefore, it is desirable to provide an integrated battery pack that reduces the number of mounting screws, connecting harnesses, connectors, and additional housings, and solves the problems of cost, mounting space, and weight caused by the distribution of modules. And high and low voltage modules of the product are reasonably arranged, and the system safety is improved.
Disclosure of Invention
In order to solve the technical problem, the invention discloses an integrated battery pack which can accurately detect a collision signal and ensure the safety of a device.
In one aspect, the present invention provides an integrated battery pack, comprising: a battery module and a controller coupled to each other; the battery module comprises battery packs and battery pack detection units coupled with the battery packs in a one-to-one correspondence mode;
the controller includes: the system comprises a micro-control unit, a battery management unit coupled with the micro-control unit, a current detection unit coupled with the battery management unit, a mode switching unit coupled with the battery management unit, a vehicle-mounted charging unit coupled with the micro-control unit, and a voltage conversion unit coupled with the micro-control unit, the battery management unit and the vehicle-mounted charging unit;
the battery pack detection unit is coupled with the battery management unit; the current detection unit is coupled with the positive electrode or the negative electrode of the battery pack; the mode switching unit is coupled with a positive electrode and a negative electrode of the battery pack.
The controller further comprises a current conversion unit, the current conversion unit is coupled with the mode switching unit, the micro control unit, the voltage conversion unit and the vehicle-mounted low-voltage power supply, the micro control unit is used for controlling the current conversion unit to switch different current conversion modes, and the current conversion modes comprise a high-voltage to low-voltage mode and a low-voltage to low-voltage mode.
Further, a switch is arranged between the adjacent battery packs in series, and the switch is coupled with the controller;
the controller is used for controlling the switch to be opened or closed.
Further, still include: a cooling unit coupled with the controller, the controller to control an opening of the cooling unit.
The battery pack comprises a plurality of single batteries connected in series, the battery pack detection unit comprises a plurality of single acquisition units, and the plurality of single acquisition units are coupled with the plurality of single batteries connected in series in a one-to-one correspondence manner;
the single acquisition unit is used for acquiring voltage information and temperature information of a single battery and transmitting the voltage information and the temperature information to the battery management unit.
Furthermore, each single acquisition unit comprises a voltage acquisition circuit and a temperature acquisition circuit, the voltage acquisition circuit is coupled with the single battery corresponding to the single acquisition unit through a metal sheet, the temperature acquisition circuit is arranged at the single battery corresponding to the single acquisition unit, and the voltage acquisition circuit and the temperature acquisition circuit are both coupled with the battery management unit;
the voltage acquisition circuit is used for acquiring the voltage information of the single battery corresponding to the single acquisition unit and transmitting the voltage information to the battery management unit;
the temperature acquisition circuit is used for acquiring the temperature information of the single battery corresponding to the single acquisition unit and transmitting the temperature information to the battery management unit.
Further, the battery management unit is coupled to the mode switching unit, and the battery management unit is configured to control the mode switching unit to switch different operating modes, where the operating modes include: a discharge mode, a first charge mode, a second charge mode, and a third charge mode.
Further, the current detection unit is coupled with the mode switching unit, the current detection unit comprises a current acquisition subunit and a voltage acquisition subunit, and the current acquisition subunit and the voltage acquisition subunit are both coupled with the battery pack and the battery management unit;
the current collecting subunit is used for collecting the total working current information of the battery pack and transmitting the total working current information to the battery management unit;
the voltage acquisition subunit is used for detecting the working mode of the mode switching unit and transmitting the working mode of the mode switching unit to the battery management unit.
Further, the controller is a PCB circuit board.
In another aspect, the present invention provides a vehicle provided with a power supply system provided with the integrated battery pack according to any one of the above.
The implementation of the invention has the following beneficial effects:
1) the battery pack detection unit is integrated in the module, so that the cost of the battery pack detection unit shell and the wire harness for monomer voltage acquisition and monomer temperature acquisition is reduced, and the size is greatly reduced.
2) The invention only sets one cooling unit which cools the battery pack and the controller at the same time, thereby reducing the cooling device for cooling the vehicle-mounted charging unit and the current conversion unit outside the cooling system.
3) According to the invention, the high-voltage and low-voltage modules of the product are reasonably arranged, and as the high-voltage components are integrated and built in, the high-voltage components which leak outwards are reduced, and the system is safer and more reliable.
4) The invention reduces the mounting screws, the connecting wire harnesses, the connector and the additional shell, solves the problems of cost, mounting space and weight caused by the distribution of the modules at present, lightens the battery pack system and reduces the power consumption of the vehicle.
5) The controller of the invention consists of a battery management unit, a current detection unit, a mode switching unit, a current conversion unit, a vehicle-mounted charging unit, a micro control unit and a power supply system. The controller only has one micro control unit, one power supply and only one whole vehicle CAN, so that the chip cost is reduced. The controller only needs one integral shell, so that the shell design cost and the shell cost of the battery management unit, the current detection unit, the mode switching unit and the current conversion unit are reduced, the use amount of the connector is reduced, and the wire harness cost is reduced. The wiring harness outside the integrated battery pack becomes simple and safer. Because the current detection unit, the mode switching unit, the current conversion unit and the vehicle-mounted charging unit are integrated, the vehicle-mounted low-voltage power supply is charged and can be processed by the micro control unit, and the charging strategy of the vehicle-mounted low-voltage power supply is greatly simplified.
Drawings
In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, 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 application.
Fig. 1 is a block diagram of an integrated battery pack according to an embodiment of the present invention;
wherein: 10-battery module, 20-controller;
101-battery, 102-battery detection unit;
201-a micro control unit, 202-a battery management unit, 203-a current detection unit, 204-a mode switching unit, 205-a vehicle charging unit, 206-a current conversion unit, 207-a voltage conversion unit.
Detailed Description
In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, 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 application.
It will be understood that when an element is referred to as being "coupled" to another element, it can be directly coupled to the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
The invention provides an integrated battery pack, which comprises: a battery module 10 and a controller 20 coupled to each other; the battery module 10 includes a battery pack 101 and battery pack detection units 102 coupled to the battery pack 101 in one-to-one correspondence;
the controller 20 includes: a micro control unit 201, a battery management unit 202 coupled with the micro control unit 201, a current detection unit 203 coupled with the battery management unit 202, a mode switching unit 204 coupled with the battery management unit 202, an on-board charging unit 205 coupled with the micro control unit 201, and a voltage conversion unit 207 coupled with the micro control unit 201, the battery management unit 202, and the on-board charging unit 205;
the battery pack detection unit 102 is coupled with the battery management unit 202; the current detection unit 203 is coupled with the positive electrode or the negative electrode of the battery pack; the mode switching unit 204 is coupled to the positive and negative electrodes of the battery pack.
Specifically, fig. 1 is a schematic structural diagram of an integrated battery pack provided by the present invention, and as shown in fig. 1, the battery pack detection unit 102 is configured to collect operating voltage information and operating temperature information of the battery pack 101, and transmit the operating voltage information and the operating temperature information to the battery management unit 202, so that the battery management unit 202 transmits the received operating voltage information and the received operating temperature information to the micro control unit 201. Wherein adjacent battery pack detection units 102 may be connected by daisy chain communication. The battery pack detection unit 102 and the battery management unit 202 may be connected in a daisy chain communication manner.
In some possible embodiments, the battery pack detection unit 102 may directly transmit the collected operating voltage information and the operating temperature information of the battery pack 101 to the micro control unit 201.
The battery pack detection unit 102 can be electrically connected with the battery pack 101 through a metal sheet directly by welding or clamping; the controller 20 may include, but is not limited to: a micro control unit 201, a battery management unit 202, a current detection unit 203, a mode switching unit 204, an in-vehicle charging unit 205, and a voltage conversion unit 207. The controller 20 may be a PCB circuit board, and integrates the micro control unit 201, the battery management unit 202, the current detection unit 203, the mode switching unit 204, the in-vehicle charging unit 205, and the voltage conversion unit 207 on the circuit board. The controller 20 may also be communicatively connected to modules or units such as an in-vehicle ECU via a CAN bus.
The battery pack detection unit 102 may be configured to acquire operating voltage information and operating temperature information of the battery pack 101, and transmit the operating voltage information and the operating temperature information to the battery management unit 202;
the current detection unit 203 is configured to collect total operating current information and total operating voltage information of the battery pack, and transmit the total operating current information and the total operating voltage information to the battery management unit 202;
the battery management unit 202 is configured to send the received total operating current information, total operating voltage information, and operating temperature information to the micro control unit 201;
the micro control unit 201 is configured to monitor and manage the battery pack according to the working voltage information, the working temperature information, the total working current information, and the total working voltage information;
the mode switching unit 204 is used for controlling whether the battery pack supplies power to the outside or is charged by the outside;
the vehicle-mounted charging unit 205 is also electrically connected with an external charging device and is used for converting an external power supply voltage into a rated charging voltage of the battery pack;
the voltage conversion unit 207 is further electrically connected to a vehicle-mounted low-voltage power supply, and is configured to provide electric energy to the micro control unit 201, the battery management unit 202, and the vehicle-mounted charging unit 205.
The battery pack detection unit 102 is integrated in the module, so that the cost of wiring harnesses for collecting the voltage of the battery pack detection unit 102 and the temperature of the battery pack is reduced, and the size is greatly reduced.
The controller 20 of the present invention is composed of a battery management unit 202, a current detection unit 203, a mode switching unit 204 module, an in-vehicle charging unit 205, a micro control unit 201, and a voltage conversion unit 207. The controller 20 has only one micro control unit 201, one power supply and only one entire vehicle CAN, so that the chip cost is reduced. The controller 20 only needs one integral casing, so that the casing design cost and the casing cost of the battery management unit 202, the current detection unit 203 and the mode switching unit 204 are reduced, the use amount of connectors is reduced, and the wiring harness cost is reduced. The wiring harness outside the integrated battery pack becomes simple and safer. Because of the integration of the current detection unit 203, the battery management unit 202 and the vehicle-mounted charging unit 205, the vehicle-mounted low-voltage power supply can be charged and processed by one micro control unit 201, and the charging strategy for the vehicle-mounted low-voltage power supply is greatly simplified.
On the basis of the above embodiments, in an embodiment of the present specification, the controller 20 further includes a current converting unit 206, the current converting unit 206 is coupled to the mode switching unit 204, the micro control unit 201, the voltage converting unit, and the vehicle-mounted low-voltage power supply, the micro control unit 201 is configured to control the current converting unit 206 to switch different current converting modes, where the current converting modes include a high current to low current mode and a low current to low current mode.
For example, when the vehicle-mounted low-voltage power supply requires charging of the battery pack, the current conversion unit 206 may convert the voltage output by the battery pack into a rated charging voltage of the vehicle-mounted low-voltage power supply (i.e., a low-voltage to low-voltage mode); when the vehicle-mounted low-voltage power supply needs an external power supply (generally 220V) for charging, the current conversion unit 206 may convert the voltage output by the external power supply into a rated charging voltage of the vehicle-mounted low-voltage power supply (i.e., a high-voltage to low-voltage mode).
According to the invention, the high-voltage and low-voltage modules of the product are reasonably arranged, and as the high-voltage components are integrated and built in, the high-voltage components which leak outwards are reduced, and the system is safer and more reliable.
On the basis of the above embodiments, in one embodiment of the present specification, a switch is disposed in series between adjacent battery packs 101, and the switch is coupled to the controller 20;
the controller 20 is used to control the switches for opening or closing.
Specifically, the switch may be a manual service switch, which may be controlled to be opened or closed by the battery management unit 202 or may be controlled to be opened or closed by other manners.
The integrated power battery management system provided by the invention can realize that the working states of the battery pack 101 can be checked one by one when the battery pack has a fault through the manual maintenance switch, thereby improving the safety.
On the basis of the above embodiments, in one embodiment of the present specification, the present specification further includes a cooling unit, the cooling unit is coupled to the controller 20, and the controller 20 is configured to control an opening degree of the cooling unit.
In particular, the cooling unit may be an air-cooled and/or water-cooled device. The cooling unit may be coupled to the microcontroller 20, the microcontroller 20 is configured to cool the battery pack 101 according to a temperature of the battery pack 101, and the microcontroller 20 may further control the cooling unit to cool the controller 20 according to a preset period.
The whole battery pack is cooled by one cooling unit, so that the number of cooling devices is reduced, and the cooling efficiency and resources are improved.
On the basis of the above embodiments, in an embodiment of the present specification, the battery pack 101 includes a plurality of serially connected single batteries, the battery pack detection unit 102 includes a plurality of single acquisition units, and the plurality of single acquisition units are coupled to the plurality of serially connected single batteries in a one-to-one correspondence;
the single acquisition unit is used for acquiring voltage information and temperature information of a single battery and transmitting the voltage information and the temperature information to the battery management unit 202.
Specifically, a plurality of cell acquisition units are coupled in sequence, wherein the last coupled cell acquisition unit is further coupled to the connected battery pack 101 operation information acquisition module or battery management unit 202. And the number of the single acquisition units is the same as that of the single batteries, and one single acquisition unit is coupled corresponding to one single battery.
The temperature and the voltage of the single batteries are checked one by one through the single acquisition units, so that the safety of the integrated battery pack is ensured more accurately.
On the basis of the above embodiment, in an embodiment of this specification, each of the cell acquisition units includes a voltage acquisition circuit and a temperature acquisition circuit, the voltage acquisition circuit is coupled to the cell corresponding to the cell acquisition unit through a metal sheet, the temperature acquisition circuit is disposed at the cell corresponding to the cell acquisition unit, and the voltage acquisition circuit and the temperature acquisition circuit are both coupled to the battery management unit 202;
the voltage acquisition circuit is used for acquiring the voltage information of the single battery corresponding to the single acquisition unit and transmitting the voltage information to the battery management unit 202;
the temperature acquisition circuit is used for acquiring the temperature information of the single battery corresponding to the single acquisition unit and transmitting the temperature information to the battery management unit 202.
Specifically, the voltage acquisition circuit may be configured to detect whether the voltage deviation of the unit cell remains within an expected range. And if the voltage deviation is exceeded, reminding a user to charge the battery pack. The cell acquisition unit can be coupled above the battery pack through a nickel sheet, wherein the voltage acquisition circuit comprises a battery monitor MAX17823, and the temperature acquisition circuit can use but is not limited to NTC.
The battery pack detection unit 102 is integrated with the battery instead of being hung in the battery pack, and originally, the battery pack detection unit is connected with the battery through a nickel sheet instead of a wiring harness connection mode, so that the cost of a long lead is reduced, and the safety protection required by the lead is omitted. The battery pack detection unit 102 is built in the battery module, and the casing of the battery pack detection unit 102 is omitted, and the installation space of the battery pack detection unit 102 is also omitted for the battery pack. The reduced wire harness and the reduced shell can reduce the weight of the battery pack, meet the requirement of light weight of the vehicle and reduce the power consumption of the vehicle.
On the basis of the foregoing embodiments, in an embodiment of the present specification, the battery management unit 202 is coupled to the mode switching unit 204, and the battery management unit 202 is configured to control the mode switching unit 204 to switch different operation modes, where the operation modes include: a discharge mode, a first charge mode, a second charge mode, and a third charge mode.
Specifically, the operation modes of the mode switching unit 204 include: a discharge mode, a first charge mode, a second charge mode, and a third charge mode. The operation mode of the mode switching unit 204 can be realized by circuit control, and the specific connection manner and devices of the circuit are not specifically limited in this specification.
For example, the micro control unit 201 may send a work instruction to the battery management unit 202 when the battery pack is powered, so that the battery management unit 202 controls the circuit of the mode switching unit 204 to switch to the discharging mode, so that the battery pack is discharged; when the battery pack is charged, the micro control unit 201 may send a first charging instruction to the battery management unit 202, so that the battery management unit 202 controls the mode switching unit 204 to switch to a circuit of the first charging mode, so that the battery pack is charged; when the vehicle-mounted low-voltage power supply needs to be charged, the micro control unit 201 may send a second charging instruction to the battery management unit 202, so that the battery management unit 202 controls the mode switching unit 204 to switch to a circuit in a second charging mode, so that the battery pack charges the vehicle-mounted low-voltage power supply; when the vehicle-mounted low-voltage power supply needs to be charged, the micro control unit 201 may send a third charging instruction to the battery management unit 202, so that the battery management unit 202 controls the mode switching unit 204 to switch to a circuit of the third charging mode, so that the external power supply charges the vehicle-mounted low-voltage power supply.
Through the switching of the different working modes of the mode switching unit 204, multiple working modes are realized, the problem that devices of the original scheme are multiple is solved, the service efficiency of the micro control unit 201 and the battery management unit 202 is improved, the possibility of faults is reduced, the whole integrated battery pack is safer and more reliable, and the user friendliness is improved.
On the basis of the above embodiments, in an embodiment of the present specification, the current detection unit 203 is coupled to the mode switching unit 204, the current detection unit 203 includes a current collecting subunit and a voltage collecting subunit, and both the current collecting subunit and the voltage collecting subunit are coupled to the battery pack and the battery management unit 202;
the current collecting subunit is configured to collect total operating current information of the battery pack, and transmit the total operating current information to the battery management unit 202;
the voltage collecting subunit is configured to detect the operating mode of the mode switching unit 204, and transmit the operating mode of the mode switching unit 204 to the battery management unit 202.
In another aspect, the present invention provides a vehicle provided with a power supply system, wherein the power supply device is provided with any one of the integrated battery packs described above. Because the above-mentioned integrated battery package has above-mentioned technological effect, consequently the car that has above-mentioned integrated battery package also should have corresponding technological effect, does not describe herein again.
It should be noted that, in the description of the present application, the terms "first", "second", and the like are used for descriptive purposes only and for distinguishing similar objects, and no precedence between the two is intended or should be construed to indicate or imply relative importance. In addition, in the description of the present application, "a plurality" means two or more unless otherwise specified.
It is to be understood that the above description is intended to be illustrative, and not restrictive. Many embodiments and many applications other than the examples provided will be apparent to those of skill in the art upon reading the above description. The scope of the present teachings should, therefore, be determined not with reference to the above description, but should instead be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled. The disclosures of all articles and references, including patent applications and publications, are hereby incorporated by reference for all purposes. The omission in the foregoing claims of any aspect of subject matter that is disclosed herein is not intended to forego the subject matter and should not be construed as an admission that the applicant does not consider such subject matter to be part of the disclosed subject matter.
Claims (10)
1. An integrated battery pack, comprising: a battery module (10) and a controller (20) coupled to each other; the battery module (10) comprises a battery pack (101) and battery pack detection units (102) coupled with the battery pack (101) in a one-to-one correspondence manner;
the controller (20) includes: a micro control unit (201), a battery management unit (202) coupled with the micro control unit (201), a current detection unit (203) coupled with the battery management unit (202), a mode switching unit (204) coupled with the battery management unit (202), an on-board charging unit (205) coupled with the micro control unit (201), and a voltage conversion unit (207) coupled with the micro control unit (201), the battery management unit (202) and the on-board charging unit (205);
the battery pack detection unit (102) is coupled with the battery management unit (202); the current detection unit (203) is coupled with the positive pole or the negative pole of the battery pack; the mode switching unit (204) is coupled to the positive and negative electrodes of the battery pack.
2. The integrated battery pack according to claim 1, wherein the controller (20) further comprises a current conversion unit (206), the current conversion unit (206) is coupled to the mode switching unit (204), the micro control unit (201), the voltage conversion unit and an on-board low voltage power supply, the micro control unit (201) is configured to control the current conversion unit (206) to switch different current conversion modes, and the current conversion modes comprise a high voltage to low voltage mode and a low voltage to low voltage mode.
3. The integrated battery pack according to claim 1, wherein a switch is arranged in series between adjacent battery packs (101), the switch being coupled to the controller (20);
the controller (20) is used for controlling the switch to be opened or closed.
4. The integrated battery pack according to claim 2, further comprising a cooling unit coupled to the controller (20), the controller (20) being configured to control an opening degree of the cooling unit.
5. The integrated battery pack according to claim 1, wherein the battery pack (101) comprises a plurality of single batteries connected in series, and the battery pack detection unit (102) comprises a plurality of single acquisition units coupled in one-to-one correspondence with the plurality of single batteries connected in series;
the single acquisition unit is used for acquiring voltage information and temperature information of a single battery and transmitting the voltage information and the temperature information to the battery management unit (202).
6. The integrated battery pack according to claim 5, wherein each single cell collection unit comprises a voltage collection circuit and a temperature collection circuit, the voltage collection circuit is coupled with the corresponding single cell of the single cell collection unit through a metal sheet, the temperature collection circuit is arranged at the corresponding single cell of the single cell collection unit, and the voltage collection circuit and the temperature collection circuit are both coupled with the battery management unit (202);
the voltage acquisition circuit is used for acquiring the voltage information of the single battery corresponding to the single acquisition unit and transmitting the voltage information to the battery management unit (202);
the temperature acquisition circuit is used for acquiring the temperature information of the single battery corresponding to the single acquisition unit and transmitting the temperature information to the battery management unit (202).
7. The integrated battery pack according to claim 1, wherein the battery management unit (202) is coupled to the mode switching unit (204), and the battery management unit (202) is configured to control the mode switching unit (204) to switch different operation modes, wherein the operation modes include: a discharge mode, a first charge mode, a second charge mode, and a third charge mode.
8. The integrated battery pack according to claim 1, wherein the current detection unit (203) is coupled to the mode switching unit (204), the current detection unit (203) comprising a current collection subunit and a voltage collection subunit, both coupled to the battery pack and to the battery management unit (202);
the current collecting subunit is used for collecting total working current information of the battery pack and transmitting the total working current information to the battery management unit (202);
the voltage acquisition subunit is used for detecting the working mode of the mode switching unit (204) and transmitting the working mode of the mode switching unit (204) to the battery management unit (202).
9. The integrated battery pack according to claim 1, wherein the controller (20) is a PCB circuit board.
10. A vehicle provided with a power supply system, characterized in that the power supply system is provided with an integrated battery pack according to any one of claims 1-9.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010128605.4A CN111342151A (en) | 2020-02-28 | 2020-02-28 | Integrated battery pack |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010128605.4A CN111342151A (en) | 2020-02-28 | 2020-02-28 | Integrated battery pack |
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| CN111342151A true CN111342151A (en) | 2020-06-26 |
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Effective date of registration: 20230310 Address after: 310051 No. 1760, Jiangling Road, Hangzhou, Zhejiang, Binjiang District Applicant after: ZHEJIANG GEELY HOLDING GROUP Co.,Ltd. Applicant after: Zhejiang liankong Technology Co.,Ltd. Address before: 315336 No. 198, Yinwan East Road, Hangzhou Bay New District, Ningbo City, Zhejiang Province Applicant before: WEIRUI ELECTRIC AUTOMOBILE TECHNOLOGY (NINGBO) Co.,Ltd. Applicant before: ZHEJIANG GEELY HOLDING GROUP Co.,Ltd. |
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