CN111224050A - Power battery pack and whole vehicle control system based on same - Google Patents
Power battery pack and whole vehicle control system based on same Download PDFInfo
- Publication number
- CN111224050A CN111224050A CN201811421949.3A CN201811421949A CN111224050A CN 111224050 A CN111224050 A CN 111224050A CN 201811421949 A CN201811421949 A CN 201811421949A CN 111224050 A CN111224050 A CN 111224050A
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- CN
- China
- Prior art keywords
- battery pack
- butt joint
- power battery
- joint piece
- flexible circuit
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery 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
- H01M10/48—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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
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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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/572—Means for preventing undesired use or discharge
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2200/00—Safety devices for primary or secondary batteries
- H01M2200/10—Temperature sensitive devices
- H01M2200/103—Fuse
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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
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
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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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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Connection Of Batteries Or Terminals (AREA)
- Secondary Cells (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The invention discloses a power battery pack, which comprises a shell, wherein the shell is internally provided with the battery pack, the power battery pack also comprises a graphene flexible circuit, two poles of the battery pack are respectively provided with a butt joint sheet, a plurality of storage batteries are arranged in the battery pack and are connected in parallel through the butt joint sheets, the battery pack is connected in series through the butt joint sheets, and the graphene flexible circuit is electrically connected with the butt joint sheets. The invention has the beneficial effects that: the sampling wire harness is centralized and wired, the number of the inserting points is greatly reduced, the process is simple, and the operation difficulty is reduced; the graphene flexible circuit has a foolproof design, so that human errors in the assembling process are reduced; the cost is practiced thrift on the one hand, and on the other hand also can furthest effectively utilize battery module space, reduces the battery module volume to reduce the proportion that power battery system took whole car, graphite alkene flexible circuit has the insulating layer of preventing the short circuit, and be equipped with the line fuse, promote whole power battery system's security.
Description
Technical Field
The application belongs to the technical field of batteries, and particularly relates to a power battery pack and a whole vehicle control system based on the power battery pack.
Background
In the modern society, along with the improvement of living standard of people, the keeping quantity of automobiles is increased year by year. The problem of exhaust gas emission from fuel-oil vehicles is an important factor causing current environmental pollution. Therefore, new energy vehicles such as electric vehicles and hybrid vehicles have been produced, and they represent a development direction of future vehicles.
The most central one in new energy vehicles is a power battery system as a power source, which is an energy storage device for providing energy for driving electric vehicles, and the energy storage device consists of more than one or more battery modules and a battery management system. Currently, lithium ion batteries are widely used in power battery packs because of their advantages of high energy density, high safety, small size, etc. The single batteries of the power battery are connected in series or in parallel to form a power battery module so as to meet the requirement standard of voltage and capacity, and the power battery module is an assembly formed by connecting a plurality of battery cores in series and parallel. The wiring harness is a network main body of the power battery system, no circuit exists even if no wiring harness exists, the wiring harness is divided into high voltage and low voltage, the sampling wiring harness is like a neural network of the whole vehicle, various detection signals and control information are transmitted to the battery management system in real time, and the protection effect of charging and discharging the battery is fully achieved.
At present, the wiring mode of the sampling wiring harness is that a pole measuring point is extended to a connector from a battery module through a wire, and then the connector is connected with a battery management system. The sampling wiring harness has long distance, a plurality of connecting points and no over-current fusing mechanism, if the connector is not carefully considered, the possibility of short circuit or information transmission delay or inconsistent tracking information of various aspects of the wiring harness is easily caused, such as short circuit among different voltages, short circuit in the chip and the like. In addition, the electrical connection device of this construction is very cumbersome to assemble and extremely costly to install and maintain.
In another mode, the positive electrode and the negative electrode are led out to a bolt on a bus bar between the battery modules by using a lead and connected with an annular terminal on the sampling wire harness through a nut, wherein a hole is formed in the annular terminal and is screwed with the bolt on the bus bar through the nut. The nut of the connecting structure has potential safety hazards of several points in the assembling process of the battery module: on one hand, if manual misoperation exists in the installation process, the nut is easy to fall into the battery module, and short circuit accidents are caused by loosening of the circuit; on the other hand, in the use process of the electric automobile, the nut and the bolt are in a long-term vibration and extrusion environment, are easy to loosen and slide, and have great danger; in addition, the bolts with the structure need to be led out from the bus bars for wiring, so that the height of the battery module is increased invisibly, the size of the battery box is increased, and the design requirements on compactness and light weight of the whole vehicle are not facilitated.
Disclosure of Invention
In view of this, the technical problem to be solved by the present application is to provide a power battery pack and a vehicle control system based on the power battery pack, and effectively solve the problems of large number of sampling wire harnesses, long sampling distance, many plugging nodes, complex process, easy occurrence of wiring errors during assembly and large vehicle space occupied by battery modules in the vehicle of the prior art.
In order to solve the technical problem, the application discloses power battery group, which comprises a housin, be equipped with the group battery in the casing, still include graphite alkene flexible circuit, the two poles of the earth of group battery all are equipped with the butt joint piece, be equipped with many pieces of batteries in the group battery, many pieces of batteries are parallelly connected through the butt joint piece, the group battery is established ties through the butt joint piece, graphite alkene flexible circuit is connected with the butt joint piece electricity.
More preferably: the graphene flexible circuit comprises a graphene substrate and a flat cable, a slave plate is arranged on the shell, and the butt joint piece and the slave plate are electrically connected with the flat cable.
More preferably: the butt joint piece comprises a positive butt joint piece and a negative butt joint piece, the butt joint piece is provided with a connecting piece, and the positive butt joint piece and the negative butt joint piece are fixedly connected with the connecting piece.
More preferably: the connecting sheet is provided with a mounting bolt, and the flat cable is electrically connected with the connecting sheet through the mounting bolt.
More preferably: the graphene flexible circuit further comprises a temperature collector and a fuse, and the temperature collector and the fuse are electrically connected with a flat cable.
More preferably: one end of the flat cable is connected with the slave plate, the other end of the flat cable is provided with a mounting ring, and the mounting bolt is electrically connected with the connecting sheet through the mounting ring.
The application also provides a whole vehicle control system based on above-mentioned power battery group: the device comprises a control unit, an execution unit and a power battery pack, wherein the control unit and the execution unit are electrically connected with the power battery pack.
More preferably: the control unit comprises a main board, a vehicle control unit, a power supply and a high-voltage distribution box, the execution unit comprises a motor and a microcontroller, the main board and the high-voltage distribution box are electrically connected with the auxiliary board, and the battery pack is electrically connected with the microcontroller.
Compared with the prior art, the application can obtain the following technical effects:
1) the sampling wire harness is centralized and wired, the number of the inserting points is greatly reduced, the process is simple, and the operation difficulty is reduced; graphene flexible circuit has on the graphite flexible circuit and prevents slow-witted design, reduces the human error in the assembling process.
2) The sampling wire harness is centralized and wired, traditional wires are replaced, on one hand, the cost is saved, on the other hand, the space of the battery module can be effectively utilized to the greatest extent, the size of the battery module is reduced, and therefore the proportion of the power battery system occupying the whole vehicle is reduced.
3) The graphene flexible circuit is provided with the short-circuit-preventing insulating layer and the line fuse, so that the safety of the whole power battery system is improved, and short-circuit accidents are not easy to happen; the temperature collector can be conveniently and directly integrated on the graphene flexible circuit.
Of course, it is not necessary for any product to achieve all of the above-described technical effects simultaneously.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
FIG. 1 is a schematic diagram of the overall structure of a power battery pack according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of a vehicle control system according to an embodiment of the present application.
The notation in the figure is: 1. the battery pack comprises a shell, 2, a battery pack, 3, a graphene flexible circuit, 4, a butt joint piece, 5, a slave plate, 6, a connecting piece, 7, a mounting bolt, 8, a temperature collector, 9, a fuse, 11, a control unit, 12, an execution unit, 111, a mainboard, 112, a vehicle control unit, 113, a power supply, 114, a high-voltage distribution box, 121, a motor, 122, a microcontroller, 31, a graphene substrate, 32, a flat cable, 33, a mounting ring, 41, a positive butt joint piece, 42 and a negative butt joint piece.
Detailed Description
Embodiments of the present application will be described in detail with reference to the drawings and examples, so that how to implement technical means to solve technical problems and achieve technical effects of the present application can be fully understood and implemented.
As shown in fig. 1 and 2, a power battery pack according to an embodiment of the present invention includes a housing 1, a battery pack 2 is disposed in the housing 1, a plurality of batteries are disposed in the battery pack 2, specifically, the plurality of batteries are arranged in a transverse direction, a pair of tabs 4 are disposed at two poles of the battery pack 2, the pair of tabs 4 includes a positive electrode pair tab 41 and a negative electrode pair tab 42, the positive electrode pair tab 41 is connected to positive electrodes of the plurality of batteries, the negative electrode pair tab 42 is connected to negative electrodes of the plurality of batteries, the plurality of batteries are connected in parallel by mounting the pair of tabs 4, after the parallel connection operation is completed, a plurality of rows of batteries are connected in series, that is, the negative electrode pair tab 42 of the front row is sequentially connected to the positive electrode pair tab 41 of the rear row, and finally, a plurality of rows of batteries that are connected in series, that is the battery pack 2, in order to increase the connection strength between the positive, the connecting piece 6 is made of metal or alloy and functions to conduct electricity.
Be equipped with graphite alkene flexible circuit 3 on group battery 2, graphite alkene flexible circuit 3 includes graphite alkene base plate 31 and winding displacement 32, winding displacement 32 is embedded in graphite alkene base plate 31, this graphite alkene base plate 31 plays the effect of mutual insulation between each winding displacement 32, be equipped with slave plate 5 in the outside of casing 1, the one end and the slave plate 5 of winding displacement 32 are connected, the other end is equipped with collar 33, collar 33 also is made by the metal and mainly plays electrically conductive effect, during specific installation, be equipped with construction bolt 7 in collar 33 of winding displacement 32, construction bolt 7 and the 6 threaded connection of connecting plate that correspond, the internal diameter of collar 33 need be less than the external diameter of construction bolt 7 flat head portion, so that the better effect that plays the fastening.
Graphene flexible circuit 3 still includes temperature collector 8 and fuse 9 for gather group battery temperature and protection group battery, temperature collector 8 and fuse 9 all are connected with winding displacement 32 electricity.
The embodiment further provides a complete vehicle control system based on the power battery module, which includes a control unit 11, an execution unit 12 and a power battery pack, where the control unit 11 includes a motherboard 111, a complete vehicle controller 112, a power supply 113 and a high-voltage distribution box 114, the execution unit 12 includes a motor 121 and a microcontroller 122, the motherboard 111 and the high-voltage distribution box 114 are both electrically connected to the slave board 5, and the battery pack 2 is electrically connected to the microcontroller 122.
The specific working mode is as follows: when the graphene flexible circuit 3 monitors the voltage and the temperature of the battery, data transmission is acquired from the slave board 5 to the main board 111, the main board 111 is controlled and executed by the vehicle control unit 112, the vehicle control unit 112 provides power for starting by means of the 24V power supply 113, and the main board 111 starts and controls the high-voltage distribution box 114 to monitor the voltage and the temperature of the battery pack 2 from the slave board 5 through the graphene flexible circuit 3 in real time under the control premise that the main board 111 is controlled by the vehicle control unit 112. The high-voltage distribution box 114 needs to control the high-voltage distribution box 114 to start at the positive pole of the 24V power supply 113 and the negative pole of the vehicle control unit 112, the motor 121 relies on the battery pack 2 as a power device, the microcontroller 122 is used for controlling the motor 121, and the battery pack 2 controls the determination of the motor 121 through the microcontroller 122.
The foregoing description shows and describes several preferred embodiments of the invention, but as aforementioned, it is to be understood that the invention is not limited to the forms disclosed herein, but is not to be construed as excluding other embodiments and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (8)
1. The utility model provides a power battery group, includes casing (1), be equipped with group battery (2) in casing (1), its characterized in that: still include graphite alkene flexible circuit (3), the two poles of the earth of group battery (2) all are equipped with butt joint piece (4), be equipped with many pieces of batteries in group battery (2), many pieces of batteries are parallelly connected through butt joint piece (4), group battery (2) are established ties through butt joint piece (4), graphite alkene flexible circuit (3) are connected with butt joint piece (4) electricity.
2. The power battery pack of claim 1, wherein: the graphene flexible circuit (3) comprises a graphene substrate (31) and a flat cable (32), a slave plate (5) is arranged on the shell (1), and the butt joint sheet (4) and the slave plate (5) are electrically connected with the flat cable (32).
3. The power battery pack of claim 2, wherein: the butt joint piece (4) comprises a positive butt joint piece (41) and a negative butt joint piece (42), a connecting piece (6) is arranged on the butt joint piece (4), and the positive butt joint piece (41) and the negative butt joint piece (42) are fixedly connected with the connecting piece (6).
4. The power battery pack of claim 3, wherein: the cable is characterized in that the connecting sheet (6) is provided with a mounting bolt (7), and the flat cable (32) is electrically connected with the connecting sheet (6) through the mounting bolt (7).
5. The power battery pack of claim 4, wherein: graphene flexible circuit (3) still includes temperature collector (8) and fuse (9), temperature collector (8) and fuse (9) all are connected with winding displacement (32) electricity.
6. The power battery pack of claim 5, wherein: one end of the flat cable (32) is connected with the slave plate (5), the other end of the flat cable is provided with a mounting ring (33), and the mounting bolt (7) is electrically connected with the connecting sheet (6) through the mounting ring (33).
7. The vehicle control system based on the power battery pack of claim 6, characterized in that: the device comprises a control unit (11), an execution unit (12) and a power battery pack, wherein the control unit (11) and the execution unit (12) are electrically connected with the power battery pack.
8. The complete vehicle control system according to claim 7, wherein: the control unit (11) comprises a main board (111), a vehicle control unit (112), a power supply (113) and a high-voltage distribution box (114), the execution unit (12) comprises a motor (121) and a microcontroller (122), the main board (111) and the high-voltage distribution box (114) are electrically connected with the slave board (5), and the battery pack (2) is electrically connected with the microcontroller (122).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811421949.3A CN111224050A (en) | 2018-11-27 | 2018-11-27 | Power battery pack and whole vehicle control system based on same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811421949.3A CN111224050A (en) | 2018-11-27 | 2018-11-27 | Power battery pack and whole vehicle control system based on same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111224050A true CN111224050A (en) | 2020-06-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811421949.3A Pending CN111224050A (en) | 2018-11-27 | 2018-11-27 | Power battery pack and whole vehicle control system based on same |
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| Country | Link |
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| CN (1) | CN111224050A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109904375A (en) * | 2017-12-11 | 2019-06-18 | 江苏兴云新能源有限公司 | The battery management system of battery module and the application battery module |
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| CN102544616A (en) * | 2010-12-08 | 2012-07-04 | 比亚迪股份有限公司 | Battery module |
| CN203503730U (en) * | 2013-10-11 | 2014-03-26 | 东莞博力威电池有限公司 | Battery pack |
| CN204596912U (en) * | 2015-02-12 | 2015-08-26 | 东莞市迈科科技有限公司 | A kind of collection balancing disk of connection in series-parallel battery pack and battery pack thereof |
| CN206806468U (en) * | 2017-05-15 | 2017-12-26 | 宁德时代新能源科技股份有限公司 | Battery modules |
| CN207884968U (en) * | 2018-03-13 | 2018-09-18 | 宁德时代新能源科技股份有限公司 | A kind of flexible PCB and battery modules |
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2018
- 2018-11-27 CN CN201811421949.3A patent/CN111224050A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201142341Y (en) * | 2007-12-21 | 2008-10-29 | 赵建和 | Electrode switching plate of series battery group |
| CN102544616A (en) * | 2010-12-08 | 2012-07-04 | 比亚迪股份有限公司 | Battery module |
| CN203503730U (en) * | 2013-10-11 | 2014-03-26 | 东莞博力威电池有限公司 | Battery pack |
| CN204596912U (en) * | 2015-02-12 | 2015-08-26 | 东莞市迈科科技有限公司 | A kind of collection balancing disk of connection in series-parallel battery pack and battery pack thereof |
| CN206806468U (en) * | 2017-05-15 | 2017-12-26 | 宁德时代新能源科技股份有限公司 | Battery modules |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109904375A (en) * | 2017-12-11 | 2019-06-18 | 江苏兴云新能源有限公司 | The battery management system of battery module and the application battery module |
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Application publication date: 20200602 |
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