CN111129376A - A novel drive battery box for electric vehicle - Google Patents
A novel drive battery box for electric vehicle Download PDFInfo
- Publication number
- CN111129376A CN111129376A CN201811289915.3A CN201811289915A CN111129376A CN 111129376 A CN111129376 A CN 111129376A CN 201811289915 A CN201811289915 A CN 201811289915A CN 111129376 A CN111129376 A CN 111129376A
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- China
- Prior art keywords
- battery
- box body
- insulating box
- battery cell
- control module
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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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—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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- 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
- H01M10/64—Heating or cooling; Temperature control characterised by the shape of the cells
- H01M10/647—Prismatic or flat cells, e.g. pouch cells
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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
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
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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
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6561—Gases
- H01M10/6563—Gases with forced flow, e.g. by blowers
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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
- H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
- H01M50/24—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries from their environment, e.g. from corrosion
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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
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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)
- Microelectronics & Electronic Packaging (AREA)
- Battery Mounting, Suspending (AREA)
- Secondary Cells (AREA)
Abstract
The invention provides a novel driving battery box for an electric vehicle, which is mainly characterized in that: the device comprises an insulating box body 1, an insulating box cover 2, a battery 3, a monitoring system 4, a driving system control module 5, a high-voltage connector 6, a maintenance joint 7, a cooling fan 9 and the like. The outside of the insulating box body is provided with symmetrically distributed cooling fans, high-low voltage connectors and communication connectors for connecting the BMS; the battery pack, the monitoring system and the driving system control module are arranged in the insulating box body; the battery box has the functions of light weight, simple shape and structure, high space utilization rate, compact arrangement of internal parts, small occupied space, good heat dissipation and waterproof sealing performance and the like, can protect the internal battery under various environmental conditions, and provides strong power for vehicles.
Description
Technical Field
The invention relates to a novel driving battery box for an electric vehicle, in particular to a battery box for formula racing of college students.
Background
The Chinese college student formula automobile competition is a formula automobile designing and manufacturing competition participated in by college automobile engineering or automobile related professional students in school student teams. Each fleet is required to design and manufacture a small one-seat racing car having excellent performance in acceleration, braking, handling performance, etc. within one year, with reference to the rules of the event and the manufacturing standards of the racing car.
Wherein the power battery box is a key component in the formula car system. Therefore, the battery box is required to play a role in ensuring the safety protection of the high-voltage battery pack while not affecting the power performance of the formula car. This novel battery box that mainly makes to present domestic majority motorcade has a great deal of shortcoming and proposes, and current university student's equation motorcycle race is with battery mainly not enough as follows:
1. the box body is heavy and has a complex shape and structure.
The current university student formula car designs the battery box into a multi-box type because of insufficient layout space, which is not favorable for light-weight design of the battery box, and increases the number of external high-low voltage wire harnesses, thereby increasing the manufacturing cost of the battery box and reducing the safety performance; the box body has a complex shape and structure, which easily causes the complex manufacturing process and the problems of greatly improved installation and disassembly difficulty, and the like.
2. The space utilization is low, and the interior part is arranged compactly, and occupation space is big.
The formula car competition of college students requires that the racing car has a compact structure and high requirement on the occupied space of the battery box, so that how to reasonably and fully utilize the internal space of the battery box is a great technical difficulty. The inside space utilization of battery box of present majority motorcade manufacturing is low, and box internals is put compact rationally inadequately, causes box internal wiring in a jumble, and a large amount of space redundancy, and then cause whole battery box occupation space big.
3. The heat dispersion is poor, and the sealing waterproof performance is poor.
The battery pack has the problems of high voltage, large current, fast heat generation, serious heat accumulation, easy poor stability, short service life and the like. The battery boxes designed and manufactured by most motorcades at present are not solved in the aspect of ventilation and heat dissipation, the interior of the battery boxes cannot be effectively dissipated, and gases with potential safety hazards generated by batteries cannot be discharged at the first time; the battery box that present majority motorcade design was made adopts air-cooled box design to have the problem that waterproof sealing performance is poor.
Disclosure of Invention
Aiming at the defects of the battery box for the current college student formula race car, the invention aims to: the battery box for the university student formula race car is light in weight, simple in shape and structure, high in space utilization rate, compact in internal part arrangement, small in occupied space and good in heat dissipation and waterproof sealing performance, overcomes the defects of most of the existing battery boxes, and is different from the battery boxes designed and manufactured by university students in the following main invention contents:
the invention adopts an integrated design, compared with a multi-box type battery box, the number of high-low voltage wire harnesses of the integrated battery box is greatly reduced, and the number of fuses, battery insulation relays, high-low voltage connectors, voltmeters and the like in the box body is reduced by half, so that the overall weight of the battery box is greatly reduced; the integral type battery box can also optimize the external shape structure, makes it cooperate with the installation space that the frame provided, and the production and processing of being convenient for is simultaneously easy to assemble, dismantles and maintains.
The invention fully utilizes the space of the rear end of the formula car seat and the front end of the motor, and combines the frame, the car body and the parts which are possibly interfered with the battery box around the battery box to design and process the special box body shape. The whole battery box is mainly divided into three modules: the monitoring system comprises a battery pack, a monitoring system and a driving system control module; the monitoring system is arranged above the battery pack, and the driving system control module is arranged in front of the battery pack; the slave control modules of the monitoring system correspond to the monitored battery packs one by one in spatial position, monitoring lines led out of the battery packs are correspondingly divided into five bundles to be sequentially connected with the five slave control modules, and arrangement lines are neat and clear and do not interfere with each other; high-voltage cables for connecting the battery pack and the driving system control module are routed along the two inclined side plates at the front end of the box body, so that the overall length of the battery box is shortened; the maintenance joints for electrical connection between the battery packs are arranged around the monitoring system in a staggered manner, so that the overall height of the battery box is reduced, and the operation stability in the driving process of the racing car is ensured; the wiring mode greatly improves the utilization rate of the internal space of the battery box, and the whole occupied space of the battery box is greatly reduced.
The invention adopts an air-cooled heat dissipation mode, a heat dissipation and ventilation air duct is arranged in an insulating box body, one end of a side plate of the box body is provided with two air inlets, and the other end of the side plate of the box body is provided with two air outlets; the air inlet and the air outlet are provided with dustproof filter screens; the air inlet and the air outlet are respectively provided with a heat radiation fan, wherein the fan arranged at the air inlet is an air suction fan, and the fan arranged at the air outlet is an air induction fan; preferably, the cooling fan adopts a cooling fan with large air volume and wide cooling area to cool all the battery cores, and the cooling fan is covered with the waterproof shutter to achieve the waterproof effect.
Drawings
FIG. 1 is a three-dimensional schematic view of a battery box
FIG. 2 is a three-dimensional schematic view of an insulation box
FIG. 3 is a three-dimensional schematic view of the inside of the battery box
FIG. 4 is a plan view of the interior of the battery pack
FIG. 5 is a three-dimensional view and a three-dimensional schematic view of a battery pack
FIG. 6 is a three-dimensional view and a three-dimensional schematic view of a monitoring system
FIG. 7 is a schematic diagram of a drive system control module
FIG. 8 is a schematic diagram of a circuit
The reference numerals are explained below:
the device comprises an insulating box body-1, an insulating box cover-2, a battery pack, 3, a monitoring system-4, a driving system control module-5, a high-voltage connector-6, a maintenance connector-7, a Hall current sensor-8, a cooling fan-9, a high-voltage cable-10, a high-voltage connector installation through hole-11, a low-voltage connector installation through hole-12, an air inlet-13, an air outlet-14, a partition-15, a vent-16 and a low-voltage connector-17.
The battery comprises a battery cell-3-1, a battery cell support box body-3-2, a battery cell support upper cover-3-3, a copper bar-3-4 and a mounting bolt-3-5.
The slave control module-4-1, the master control module-4-2, the fixed epoxy plate-4-3 and the lifting lug-4-4.
The system comprises a battery insulation relay-5-1, a pre-charging relay-5-2, a pre-charging resistor-5-3, a fuse-5-4 and a fixed epoxy plate-5-5.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. The terms "upper", "lower", "front", "rear", "left" and "right" in the drawings refer to the components of the battery box and the state of the battery box.
The embodiment of the invention is as follows with reference to the attached drawings 1 to 8 of the specification: the invention relates to a novel driving battery box for an electric vehicle, which comprises an insulating box body 1 and an insulating box cover 2 matched with an opening at the upper end of the insulating box body 1, wherein the insulating box body 1 and the insulating box cover 2 are fixedly connected together through a mounting bolt; the insulation box body is designed to be simple in external shape and structure and matched with a space structure provided by the frame; the insulating box body is formed by bending and welding a Q235 cold-rolled steel plate with the thickness of 2mm, and Formex insulating cloth is attached to the inner wall of the battery box to realize fireproof insulation; the left side wall of the insulating box body is provided with two circular air inlets 13, the right side wall of the insulating box body is provided with two circular air outlets 14, and heat dissipation fans 9 are arranged at the air inlets and the air outlets to dissipate heat of the internal battery pack 3; the self-made waterproof shutters cover the outsides of the four radiating fans respectively, so that external water drops are prevented from entering the box body through the air inlet and the air outlet under the rain test or rain weather conditions, and a good waterproof effect is achieved; two inclined walls at the front end of the insulating box body are respectively provided with a through hole 11 for mounting a high-voltage connector and mounting the high-voltage connector; the rear wall of the insulating box body is provided with two through holes for mounting a low-voltage connector and a communication connector for connecting the BMS, and the corresponding low-voltage connector and the communication connector for connecting the BMS are mounted; the interior of the insulating box body is divided into seven parts by partition plates 15, wherein two partition plates are provided with ventilation openings to form a transverse heat dissipation air duct; six of the seven parts are used for placing corresponding six battery packs 3, and the other part is used for placing a driving system control module 5; the six battery packs and the driving system module 5 are fixed at the bottom of the insulating box body 1 through mounting bolts; the six battery packs are connected in series by a maintenance connector 7; the monitoring system 4 is arranged above the battery pack and is fixedly connected with the two side walls and the rear wall of the insulating box body through mounting bolts.
The battery pack 2 comprises 108 battery cells 3-1, a battery cell support box body 3-2, a battery cell support upper cover 3-3, copper bars 3-4 and mounting bolts 3-5. The battery cell bracket is made of fireproof ABS (acrylonitrile butadiene styrene) plate materials, and the battery cell bracket box body is mutually connected with the battery cell bracket upper cover; the four side plates of the battery cell support box body are provided with ventilation openings for heat dissipation, and the battery cell support upper cover is provided with through holes for passing through voltage and temperature detection lines and electrode holes for passing through battery cell tabs; the battery cells are connected in series to form a row of battery cell rows in a mode of connecting positive and negative electrode lugs by mounting bolts, and the single cells are isolated by fireproof sponge to avoid shock and leave a gap of 3mm for ventilation and heat dissipation, wherein one row is connected in series with 9 battery cells, and two rows of the battery cell rows are placed in one battery pack; the positive electrode lug of the first cell and the negative electrode lug of the last cell of the first row of cell rows respectively penetrate through the electrode holes of the upper cover of the cell support, and the negative electrode lug of the first cell and the positive electrode lug of the last cell of the second row of cell rows respectively penetrate through the electrode holes of the upper cover of the cell support; the negative electrode tabs of the first row of battery cells and the positive electrode tabs of the second row of battery cells which penetrate out of the electrode holes are connected in series with the long copper bar through the mounting bolts and are fixed on the battery cell support upper cover 3-3; and the positive electrode lug of the first row of battery cells and the negative electrode lug of the second row of battery cells of the outgoing electrode hole are respectively connected with the short copper bar through mounting bolts and are respectively fixed on the upper cover of the battery cell support.
The monitoring system 4 comprises five slave control modules 4-1, a master control module 4-2, an epoxy plate 4-3 for fixing the BMS, a plurality of lifting lugs 4-4, a collecting balance line, a temperature line, a power line, a CAN communication line and the like; the five slave control modules and the master control module are fixed on the fixed epoxy plate through mounting bolts; a plurality of lifting lugs are arranged at the edges of the fixed epoxy plates 4-4, and the lifting lugs are fixedly connected with the insulating box body through mounting bolts; the acquisition balance line and the temperature line which are led out from the interface of the slave control module are connected with the electrode lug of the corresponding detected battery cell, and the voltage value and the temperature value of the battery cell are acquired; the five slave control modules and the master control module are connected in series through the CAN communication line; and the CAN communication line and the power line led out from the main control module interface are connected with two low-voltage connectors fixed on the rear wall of the insulating box body.
The driving system control module 5 comprises two battery insulation relays 5-1, a pre-charging relay 5-2, a pre-charging resistor 5-3, a fuse 5-4, a fixed epoxy plate 5-5 and a wire harness. The battery insulation relay, the pre-charge relay and the fuse are respectively fixed on the epoxy plate through mounting bolts according to a designed placing method, and the epoxy plate is fixed at the bottom of the insulation box body through the mounting bolts; the placing method comprises the steps that two battery insulation relays are placed at two ends of an epoxy plate, and a pre-charging relay and a pre-charging resistor are placed in the middle of the epoxy plate, so that the battery insulation relays are close to two poles of a battery pack and positive and negative pole connectors, the length of a high-voltage cable is shortened, a large amount of space is added for the arrangement of other wire harnesses, the residual space is fully utilized, devices are placed compactly, and the wiring of parts and the realization of functions are not influenced; the positive pole of the total negative battery insulation relay is connected with the negative pole of the battery pack through a high-voltage cable 10, and the negative pole of the total negative battery insulation relay is connected with a negative pole high-voltage connector 6 fixed on the insulation box body through a high-voltage cable; the negative pole of the total positive battery insulation relay is connected with the positive pole of the fuse through a mounting bolt, the positive pole of the total positive battery insulation relay is connected with a positive pole high-voltage connector fixed on the insulation box body 1, and the positive pole of the fuse is connected with the negative pole of the battery pack through a high-voltage cable; the pre-charging relay and the pre-charging resistor are connected in series and then connected in parallel with the total positive battery insulation relay; and the power lines and the control lines of the two battery insulation relays and the pre-charging relay are respectively connected with a main control module of the monitoring system 4.
Claims (7)
1. A novel drive battery box for electric vehicle which characterized in that: the battery box comprises an insulating box body, an insulating box cover, a battery pack, a monitoring system, a driving system control module, a Hall current sensor and a cooling fan, wherein the insulating box cover is matched with an opening in the upper end of the insulating box body, and the battery pack, the monitoring system, the driving system control module, the cooling fan and the Hall current sensor are installed in the insulating box.
2. The new drive battery box for electric vehicle according to claim 1, characterized in that: the side wall of the insulating box body is externally provided with a plurality of air inlets and air outlets for dissipating heat inside the battery box; the front wall of the insulating box body is provided with a high-voltage connector used for connecting the positive pole and the negative pole of the battery and a through hole used for installing the high-voltage connector; the Hall current sensor for detecting the current value is arranged in the front wall of the insulating box body; and the rear wall of the insulating box body is provided with a low-voltage connector, a communication connector for connecting the BMS and a through hole for installing the connector.
3. The insulation box of claim 2, wherein: six battery packs are arranged in the insulating box body, the battery packs are separated by partition plates, the battery packs are fixed with the insulating box body in a bolt mode on the bottom, and each battery pack comprises a battery cell bracket, a plurality of battery cells, a copper bar, a high-voltage cable and a mounting screw; the battery cell support is made of ABS plate materials, and comprises a battery cell support box body and a battery cell support upper cover matched with the opening of the battery cell support box body, four side plates of the battery cell support box body are provided with vents, and the battery cell support upper cover is provided with a plurality of through holes used for passing through wiring harnesses and battery cell lugs.
4. The battery pack according to claim 3, characterized in that: the battery cell is connected with the lug in series in a mode of connecting the lug through the mounting bolt and is fixed in the battery cell support, and the mounting screw sequentially extends out of the lug of the battery cell and the copper bar and is in threaded connection with the upper cover of the battery cell support.
5. The new drive battery box for electric vehicle according to claim 1, characterized in that: the monitoring system comprises a BMS battery management system, a temperature sensor, a Hall current sensor, a wire harness, an epoxy plate and a mounting bolt, wherein the epoxy plate is used for fixing the BMS battery management system; BMS battery management system includes five slave control modules and a host control module that are used for detecting laminate polymer battery voltage, electric current and temperature, host control module includes high-voltage module, GPRS module.
6. The monitoring system of claim 5, wherein: the BMS battery management system is fixed on the epoxy plate through the mounting bolt, and the epoxy plate is fixed on the insulating box body through the mounting bolt; the temperature sensor, the Hall current sensor and the BMS battery management system are electrically connected through the wire harness; and a temperature probe of the temperature sensor is directly connected with a negative pole lug of the battery cell.
7. The new drive battery box for electric vehicle according to claim 1, characterized in that: the driving system control module is arranged at the bottom of the front end of the insulating box body and is fixed with the insulating box body through a mounting bolt; the driving system control module comprises a high-voltage device, a high-voltage cable, an epoxy plate for fixing the high-voltage device and a mounting bolt; the high-voltage device comprises two battery insulation relays, a pre-charging relay, a pre-charging resistor and a fuse and is fixed on the epoxy plate through the mounting bolt; and the two ends of the high-voltage cable are connected with copper noses for mounting and fixing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811289915.3A CN111129376A (en) | 2018-10-31 | 2018-10-31 | A novel drive battery box for electric vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811289915.3A CN111129376A (en) | 2018-10-31 | 2018-10-31 | A novel drive battery box for electric vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111129376A true CN111129376A (en) | 2020-05-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811289915.3A Pending CN111129376A (en) | 2018-10-31 | 2018-10-31 | A novel drive battery box for electric vehicle |
Country Status (1)
| Country | Link |
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| CN (1) | CN111129376A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113571829A (en) * | 2021-07-15 | 2021-10-29 | 广州智光储能科技有限公司 | High-voltage energy storage battery rack |
| CN115956319A (en) * | 2020-09-16 | 2023-04-11 | 浙江吉利控股集团有限公司 | A battery package and new energy automobile for new energy automobile |
-
2018
- 2018-10-31 CN CN201811289915.3A patent/CN111129376A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115956319A (en) * | 2020-09-16 | 2023-04-11 | 浙江吉利控股集团有限公司 | A battery package and new energy automobile for new energy automobile |
| CN113571829A (en) * | 2021-07-15 | 2021-10-29 | 广州智光储能科技有限公司 | High-voltage energy storage battery rack |
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Application publication date: 20200508 |
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