CN112498129A - Range-extending type electric automobile power system - Google Patents
Range-extending type electric automobile power system Download PDFInfo
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- CN112498129A CN112498129A CN202011426697.0A CN202011426697A CN112498129A CN 112498129 A CN112498129 A CN 112498129A CN 202011426697 A CN202011426697 A CN 202011426697A CN 112498129 A CN112498129 A CN 112498129A
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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
- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
- B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K1/00—Arrangement or mounting of electrical propulsion units
- B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
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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
- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
- B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
- B60L50/64—Constructional details of batteries specially adapted for electric 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
- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
- B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
- B60L50/66—Arrangements of batteries
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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
- 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
Abstract
An extended range electric automobile power system relates to the technical field of automobiles and solves the technical problem of reducing manufacturing cost. The system comprises a vehicle body, a main motor, a main battery pack and a range extender, wherein the main motor is used for driving the vehicle body to move, and the main battery pack and the range extender provide power for the main motor, and the system is characterized in that: the range extender is a range-extending battery pack, a range-extending battery frame is fixed in a luggage compartment of the vehicle body, and the range-extending battery pack is installed on the range-extending battery frame in a pluggable mode. The system provided by the invention has low manufacturing cost and small manufacturing difficulty.
Description
Technical Field
The invention relates to an automobile technology, in particular to a technology of a range-extended electric automobile power system.
Background
The conventional power system of an extended range electric vehicle, such as the extended range electric vehicle disclosed in chinese patent publication No. CN103419675A (an operation method of an extended range electric vehicle), includes a motor controller, and a power battery pack, an extended range unit and a driving motor electrically connected to the motor controller. The range-extended electric vehicle is characterized in that wheels are driven to run by a driving motor and a transmission system with an automatic gearbox, a range extender consisting of an engine and a starting and generating integrated machine only provides electric energy for the system and does not directly participate in driving the vehicle, a power battery pack is an energy storage device and stores the electric energy generated by power grid, the range extender and braking energy recovery, and the electric energy required by the running of the vehicle is provided by the power battery pack or the range extender alone or provided by the combination of the power battery pack and the range extender.
The power transmission system of the range-extended electric vehicle mainly comprises a driving motor system, a power supply system, a range extender, a vehicle control unit and the like, and compared with a pure electric vehicle, the range extender is added. "pick from the title: new energy automobile general theory (2 nd edition); publication issue, Beijing university Press; standard book number, ISBN978-7-301 and 31007-6.
The range-extended electric automobile model in the prior art is BMW i3 (a range-extended module can be selected); buick VELITE 5; an ideal ONE; wind-light E3 EVR (extended range type) of east wind light; fisker card; chevrolet wondard (Volt); audi A1e-tron range-extension edition; gac trumpchi GA 5;
therefore, the conventional extended range electric vehicle power system is shown in fig. 7, and includes a main motor (i.e., a driving motor) for driving the vehicle body to travel, a main battery pack (i.e., a power battery pack) for supplying power to the main motor, a range extender, and a control unit (i.e., a motor controller) for controlling the operation of the main battery pack and the range extender, wherein the control unit (i.e., the motor controller) is electrically connected with the main battery pack (i.e., the power battery pack), the range extender, and the main motor (i.e., the driving motor), respectively, and the range extender includes a fuel engine and a generator; the range extender can supply power to the main motor and/or charge the main battery pack under the control of the control unit.
The existing range-extending electric automobile is provided with a vehicle-mounted battery, a motor and a fuel engine, wherein the fuel engine is used as a range extender and can be used for generating power under the condition of insufficient electric quantity of the vehicle-mounted battery to realize range extension. Because need be equipped with fuel engine, the cost of range extending electric automobile is higher than pure electric automobile, and the manufacturing degree of difficulty is also relatively great, and the most important is that fuel engine has environmental pollution and energy consumption problem.
In addition, the pure electric vehicle is short in endurance mileage, long in charging time and insufficient in charging quantity, so that charging is difficult and inconvenient. Although manufacturers provide services for directly replacing the battery pack, the battery pack is bulky and complex in structure, so that the battery replacement process generally requires professional equipment and personnel, the battery replacement process also requires a long time, and the cost is high. In addition, the main battery pack of the existing pure electric vehicle is arranged below a chassis or a backseat seat of the vehicle, so that the replacement operation is extremely inconvenient.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a range-extended electric vehicle power system which is low in manufacturing cost and convenient and quick in battery replacement operation.
In order to solve the technical problems, the invention provides a range-extended electric vehicle power system, which comprises a vehicle body, a main motor, a main battery pack and a range extender, wherein the main motor is used for driving the vehicle body to move, the main battery pack and the range extender are used for providing electric power for the main motor, a control unit for controlling the main battery pack and the range extender to work is arranged on the vehicle body, and the control unit is respectively connected with the main battery pack, the range extender and the main motor, and is characterized in that: the range extender is a range extension battery pack, a range extension battery frame is fixed in a luggage compartment of the vehicle body, the range extension battery pack is installed on the range extension battery frame in a pluggable mode, and the range extension battery pack can provide electric power for the main motor and/or charge the main battery pack under the control of the control unit.
Furthermore, the range-extending battery pack is composed of a battery frame and at least one battery module, the battery frame is installed on the range-extending battery frame in a pluggable mode, a plurality of battery slots are formed in the battery frame, each battery module in the range-extending battery pack is respectively inserted into each battery slot in the battery frame in a pluggable mode, electrical connecting pieces which are matched with each other are respectively arranged on the battery modules and in the battery slots, and electrical connecting pieces which are matched with each other are also respectively arranged on the range-extending battery frame and on the battery frame, so that the battery modules can be connected to the control unit through the connection of the battery modules and the electrical connecting pieces on the battery frame.
Furthermore, the control unit is composed of a plurality of mode selection switches and a control module for controlling the on-off of each mode selection switch, and each switch control signal output end of the control module is respectively connected to the control end of each mode selection switch;
each battery module in the range-extended battery pack is connected with a main motor through a mode selection switch respectively, each battery module in the range-extended battery pack is connected with each battery module in the main battery pack through the mode selection switch respectively, and each battery module in the main battery pack is connected with the main motor through the mode selection switch respectively;
the control module controls the on-off of each mode selection switch to control the battery module in the range-extended battery pack to provide power for the main motor and/or charge the battery module in the main battery pack;
the control module controls the battery modules in the main battery pack to supply power to the main motor by controlling the on-off of each mode selection switch.
Further, the main battery pack is mounted on a chassis of the vehicle body.
Furthermore, the battery capacity of the range-extended battery pack is 1/7-1/2 times of that of the main battery pack.
Further, the luggage compartment is provided at the front or/and rear of the vehicle body.
Furthermore, a battery access is formed in one end of the battery slot, so that the battery module can be horizontally drawn out or inserted into the battery slot through the battery access.
Further, the slot of the battery slot is opened upward so that the battery module can be lifted upward or inserted downward into the battery slot through the slot of the battery slot.
Furthermore, the range-extending battery rack consists of a fixed base and a sliding support, wherein the fixed base is fixed in a trunk of the automobile, the sliding support is installed on the fixed base in a sliding fit mode, the sliding support can slide to the part of the sliding support to extend out of the trunk, and the range-extending battery pack is installed on the sliding support in a pluggable mode.
Furthermore, the range-extending battery rack consists of a fixed base and a sliding support, wherein the fixed base is fixed in a trunk of the automobile, the sliding support is installed on the fixed base through a lifting support and can ascend to the outside of the trunk, and the range-extending battery pack is installed on the sliding support in a pluggable mode.
The range-extended electric automobile power system provided by the invention adopts the range-extended battery pack as the range extender, reduces the manufacturing cost of the whole automobile, and solves the problems of environmental pollution and energy consumption in fuel oil power generation; the range-extending battery pack is installed on the range-extending battery frame outside the passenger compartment in a pluggable mode, the range-extending battery pack can be replaced by opening the luggage compartment cover, a user can replace the range-extending battery pack in a self-service mode, professional equipment and personnel do not need to be equipped, and the range-extending battery pack is very convenient and fast. In addition, the range-extending battery pack is light in weight and arranged outside the passenger compartment, so that the battery pack can be replaced without being taken off, and the cost and the time are greatly saved.
Moreover, the existing pure electric vehicle only has an integral main battery pack, so the pure electric vehicle needs to be integrally replaced, no matter whether the electric quantity in the main battery pack is exhausted or not, the waste of battery replacement is caused, and the use cost of battery replacement is increased. The range-extended electric vehicle can be replaced when the electric quantity of the range-extended battery pack is exhausted, and the battery module or the battery modules with the exhausted electric quantity in the range-extended battery pack can be replaced independently, so that the battery replacement efficiency and the battery use efficiency are improved.
The range-extending electric vehicle power system does not change the vehicle body structures such as the original main battery pack arranged on the chassis and the like, ensures the safety of the vehicle body structures, easily enables different brands and different vehicle types of various vehicle enterprises to share the battery replacement resources of the battery replacement station network, enables the battery replacement station to conveniently realize standardized service, and facilitates the cross-vehicle type and cross-brand popularization of the invention.
Drawings
FIG. 1 is a schematic diagram of a range-extended electric vehicle with a range-extended battery pack disposed at the rear of the vehicle body according to a first embodiment of the present invention;
FIG. 2 is a schematic diagram of a range-extended electric vehicle power system according to a first embodiment of the present invention, in which a range-extended battery pack is disposed at a front portion of a vehicle body;
FIG. 3 is a schematic diagram of the power system of the extended range electric vehicle according to the first embodiment of the present invention, wherein the extended range battery packs are disposed at the front and the rear of the vehicle body;
FIG. 4 is a schematic diagram of a range-extended battery pack in a range-extended electric vehicle powertrain according to a first embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a control unit in the power system of the extended range electric vehicle according to the first embodiment of the present invention;
FIG. 6 is a schematic diagram of the operation mode of the power system of the extended range electric vehicle according to the first embodiment of the present invention;
FIG. 7 is a schematic diagram of a prior art power system of an extended range electric vehicle;
FIG. 8 is a schematic structural diagram of a range-extended battery pack in a range-extended electric vehicle powertrain according to a second embodiment of the present invention;
fig. 9 is a schematic structural diagram of a range-extended battery rack in a range-extended electric vehicle power system according to a third embodiment of the invention;
fig. 10 is a schematic structural diagram of a range-extended battery rack in a range-extended electric vehicle power system according to a fourth embodiment of the invention;
fig. 11 is a schematic structural diagram of a range-extended battery rack in a range-extended electric vehicle power system according to a fifth embodiment of the invention;
fig. 12 is a schematic structural diagram of a control unit in an extended range electric vehicle powertrain according to a sixth embodiment of the invention.
Detailed Description
The embodiments of the present invention will be described in further detail with reference to the following description of the drawings, but the embodiments are not intended to limit the present invention, and all similar structures and similar variations using the present invention shall be included in the scope of the present invention, and the pause numbers in the present invention shall have a relation of the same.
As shown in fig. 1-3, a first embodiment of the invention provides an extended range electric vehicle power system, which includes a vehicle body 1, a main motor (not shown) for driving the vehicle body to travel, a main battery pack 2 for providing electric power to the main motor, and a range extender, and is characterized in that: the range extender is a range extension battery pack 3, a range extension battery frame is fixed in a luggage compartment of the vehicle body, the range extension battery pack 3 is installed on the range extension battery frame in an independent plugging mode, a control unit used for controlling the work of the main battery pack 2 and the range extension battery pack 3 is arranged on the vehicle body, and the control unit is respectively connected with the main battery pack, the range extension battery pack and the main motor, so that the range extension battery pack can provide electric power for the main motor and/or charge the main battery pack under the control of the control unit.
As shown in fig. 4, in the first embodiment of the present invention, the range-extending battery pack is composed of a battery frame 4 and a plurality of battery modules 31, the battery frame 4 is installed on the range-extending battery rack in a pluggable manner, the battery frame 4 is provided with a plurality of battery slots, each battery module 31 in the range-extending battery pack is respectively inserted into each battery slot on the battery frame 4 in a pluggable manner, and the battery module 31 is provided with a handle 32 for being grasped by a human hand to facilitate the insertion and extraction of the battery module, the battery module 31 and the battery slots are respectively provided with mutually matched electrical connectors (for example, an electrical socket is provided on the battery module, an electrical plug is provided in the battery slot), and the range-extending battery rack and the battery frame 4 are also respectively provided with mutually matched electrical connectors (for example, an electrical socket is provided on the battery frame, an electrical plug is provided on the range-extending battery rack), so that the battery module 31 can be connected to the control unit by engagement of the battery module 31 with the electrical connection members on the battery frame 4, and a battery inlet and outlet is opened at one end of the battery slot so that the battery module 31 can be horizontally withdrawn or inserted into the battery slot through the battery inlet and outlet.
In the first embodiment of the invention, the main battery pack is arranged on a chassis of the vehicle body, the extended-range battery pack is arranged in a trunk of the vehicle body, the extended-range battery pack can be conveniently replaced by opening a trunk cover, each battery module in the extended-range battery pack can be plugged and pulled out in a pulling and pulling mode, so that only a single battery module in the extended-range battery pack can be replaced, and the arrangement of luggage articles in the trunk of the vehicle body is not influenced because the extended-range battery pack can be replaced by being pulled out from the rear end (or the front end) of the vehicle; an electrical connecting piece connected with the range-extending battery pack is also arranged in the luggage compartment of the vehicle body; when the battery capacity of the range-extended battery pack is 10-18 kilowatts, the battery capacity of the range-extended battery pack is 1/7-1/2 times of that of the main battery pack, the range-extended battery pack is small in size, light in weight and convenient to replace, the range-extended battery pack can be disassembled into a plurality of battery modules, the single bodies of the battery modules are smaller in size and lighter in weight, and the battery modules can be replaced one by one or even manually operated.
In the first embodiment of the present invention, the range-extended battery pack may also be composed of only one battery module, and the battery frame may also have only one battery slot.
The engine of the traditional automobile has two layouts, namely a front engine and a rear engine; the engine compartment of the front engine automobile is arranged at the front part of the automobile body, the luggage compartment is arranged at the rear part of the automobile body, and the rear luggage compartment is also commonly called a rear spare compartment; the engine compartment of the rear engine automobile is arranged at the rear part of the automobile body, and the luggage compartment is arranged at the front part of the automobile body; some pure electric vehicles can be provided with luggage compartments at the front part and the rear part of the vehicle body simultaneously;
the luggage compartment described in the first embodiment of the present invention is disposed at the rear of the vehicle body, and in other embodiments of the present invention, the luggage compartment may be disposed at the front of the vehicle body (as shown in fig. 2), or may be disposed at both the front and rear of the vehicle body (as shown in fig. 3).
As shown in fig. 6, in the first embodiment of the present invention, the control unit is respectively connected to the main battery pack, the range-extended battery pack and the main motor; so that the extended range battery pack can supply power to the main motor and/or charge the main battery pack under the control of the control unit.
As shown in fig. 6, the operation mode of the embodiment of the present invention is as follows: the main battery pack and the extended-range battery pack can be charged by using a ground charging pile connected with a power grid when the vehicle is parked for a long time (the technology of charging the vehicle-mounted battery pack by using the charging pile is mature in the field, and the description is omitted in this embodiment); after the vehicle runs to the battery replacement station, the trunk is opened, so that the whole range-extended battery pack can be conveniently and rapidly taken out of the range-extended battery frame for replacement (the range-extended battery pack which is completely charged is replaced by the fully charged range-extended battery pack), and a battery module monomer which is insufficient in the range-extended battery pack can be pulled out of a battery slot on the battery frame for replacement; when the trunk is opened to replace the extended-range battery pack, passengers do not need to get on or off the vehicle for matching, meanwhile, the replacement time is saved, the use habits of users are better met, and the experience is better;
when the electric quantity of the range-extended battery pack is smaller than a preset range-extended electric quantity threshold value, the main battery pack provides electric power for the main motor;
when the electric quantity of the range-extended battery pack is greater than or equal to a preset range-extended electric quantity threshold value, two working modes can be adopted;
the first working mode is that the range-extended battery pack supplies power to the main motor, and the range-extended battery pack also charges the main battery pack to supplement the energy of the main battery pack;
in the second working mode, the main battery pack provides power for the main motor, and the range-extended battery pack only charges the main battery pack, so that the energy of the main battery pack is supplemented.
The technology of using a battery pack as a power source to provide power for a motor and the technology of using a charged battery pack as a power-deficient battery pack to charge are mature technologies in the field, and related circuit structures are applied to a plurality of products and are also recorded in a plurality of documents, and the details of the embodiment are not repeated.
As shown in fig. 5, the control unit is composed of a plurality of mode selection switches and a control module G for controlling on/off of each mode selection switch, and the mode selection switches may be electronic switches such as relays and field effect transistors; in fig. 5, Q is a main motor, E1 and E2 are battery modules in a range-extended battery pack, E1 ', E2 ' and E3 ' are battery modules in the main battery pack, and are all controlled by a control module G, and K11, K12, K21, K22, K11 ', K12 ', K21 ', K22 ', K31 ' and K32 ' are all mode selection switches;
the control module G can adopt a single chip microcomputer or a vehicle-mounted running computer, the switch control signal output ends of the control module G are respectively connected to the control ends of the mode selection switches, the battery modules E1 and E2 in the range-extended battery pack are respectively connected with the main motor Q through the mode selection switches K11 and K21, the battery modules E1 and E2 in the range-extended battery pack are respectively connected with the battery modules E1 ', E2' and E3 'in the main battery pack through the mode selection switches K12, K22, K12', K22 'and K32', and the battery modules E1 ', E2' and E3 'in the main battery pack are respectively connected with the main motor Q through the mode selection switches K11', K21 'and K31', and the control module G controls the main battery pack and the range-extended battery pack by controlling the on and off of the mode selection switches;
in a first working mode, the mode selection switches K11, K22, K12 ', K22', K32 'are closed and conducted, the mode selection switches K12, K21, K11', K21 ', and K31' are opened, at the moment, the main motor Q is driven by the battery module E1 in the range-extended battery pack, and the battery modules E1 ', E2', and E3 'in the main battery pack are charged by the battery module E2 in the range-extended battery pack through the mode selection switches K22, K12', K22 ', and K32';
in the second operation mode, the mode selection switches K12 and K22 are turned on, and then the corresponding mode selection switches are turned on and off, so that one of the battery modules E1 ', E2 ' and E3 ' in the main battery pack drives the main motor Q, and the standby battery modules in the main battery pack are charged by the battery modules E1 and E2 in the extended range battery pack, for example, the mode selection switches K12, K22, K11 ', K22 ' and K32 ' are turned on, and the other mode switches are turned off, so that the main motor Q is driven by the battery module E1 ' in the main battery pack, and the standby battery modules E2 ' and E3 ' in the extended range battery pack are charged by the battery modules E1 and E2 in the main battery pack.
When the extended-range electric automobile adopting the embodiment as the power system is anchored due to no electricity on the road, the battery replacement station can send an emergency battery replacement vehicle to the scene, so as to provide a replacement extended-range battery pack for customers, so as to meet the emergency demand.
Regarding the mileage of the range-extending battery pack, the energy density of the lithium battery is 0.2 kilowatt-hour/kg, 1 battery module in the range-extending battery pack is about 6 kg, 1 range-extending battery pack comprises 10 battery modules about 60 kg, and the battery capacity is 0.2 kilowatt-hour/kg 60 kg =12 kilowatt-hour; setting unit power consumption 5 km/kwh, the continuous mileage of 1 range-extended battery pack (12 kwh 5 km/kwh) is about 60 km, and the continuous mileage of 2 range-extended battery packs can be 120 km;
if the maximum distance of each battery replacement station is designed to be 50 kilometers, the electric automobile can be basically ensured to be continuously replaced with the extended-range battery pack, and therefore the problem of short endurance mileage of the pure electric automobile is solved.
The extended-range battery pack is far lighter than the main battery pack, and the position of the extended-range battery pack is convenient to replace, so that equipment of the battery replacing station is simple, the cost is low, the battery module of the extended-range battery pack can be disassembled and manually replaced by people, operators leasing the extended-range battery pack can set more battery replacing stations, the distance between the battery replacing stations is shortened, and the problem of short endurance mileage of the electric automobile is solved.
Because the range-extended battery pack adopts a battery changing mode, the battery does not need to be stopped for charging during running, the problem of energy-increasing and endurance can be solved as long as the battery is stopped for changing (the range-extended battery pack is changed), the main battery pack can be charged during running, and the problem that the running of a pure electric automobile is influenced due to too long parking and charging time is solved;
because the extended-range battery pack can be replaced at any time in the battery replacement station, the design capacity of the main battery pack can be relatively small, the battery capacity only needs 40-70% of that of a common pure electric vehicle, and a large-capacity power battery (the main battery pack) does not need to be matched, so that the manufacturing cost of the whole vehicle can be reduced, the vehicle-electricity separation can be conveniently realized, and the vehicle can be purchased and rented; and the main battery pack can be charged in a running process by utilizing the range-extended battery pack, so that the main battery pack is prevented from being charged quickly, and the service life of a power battery of the main battery pack is prolonged.
The electric automobile is only a basic passenger car (sedan), a multipurpose vehicle (MPV) and a sport-utility vehicle (SUV) in passenger cars; (excluding minibuses and no more than 9 light buses).
As shown in fig. 8, the second embodiment of the present invention is different from the first embodiment in that: the battery frame structures in the range-extended battery pack are different, in the battery frame 204 of the second embodiment, the notch of the battery slot is opened upwards, so that the battery module 231 can be lifted upwards or inserted downwards into the battery slot through the notch of the battery slot, the battery module 231 is also provided with a handle 232 for being grasped by a hand, the battery module 231 and the battery slot are also respectively provided with mutually matched electrical connectors, and the range-extended battery frame and the battery frame 204 are also respectively provided with mutually matched electrical connectors, so that the battery module 31 can be connected to the control unit through the connection of the electrical connectors on the battery module 31 and the battery frame 204.
As shown in fig. 9, the third embodiment of the present invention is different from the first embodiment in that: the range-extending battery rack of the third embodiment is different in structure, the range-extending battery rack of the third embodiment is composed of a fixed base 301 and a sliding support 302, wherein the fixed base 301 is fixed in a trunk of an automobile, the sliding support 302 is installed on the fixed base in a sliding fit manner, the sliding support 302 can slide to a part of the sliding support to extend out of the trunk, and the range-extending battery pack 303 is installed on the sliding support 302 in a pluggable manner, and the structure of the range-extending battery pack of the third embodiment is the same as that of the first embodiment.
As shown in fig. 10, the fourth embodiment of the present invention is different from the second embodiment in that: the range-extending battery rack of the third embodiment is different in structure, the range-extending battery rack of the third embodiment is composed of a fixed base 401 and a sliding support 402, wherein the fixed base 401 is fixed in a trunk of an automobile, the sliding support 402 is installed on the fixed base in a sliding fit manner, the sliding support 402 can slide to a part of the sliding support to extend out of the trunk, a range-extending battery pack 403 is installed on the sliding support 402 in a pluggable manner, and the structure of the range-extending battery pack of the fourth embodiment is the same as that of the second embodiment.
As shown in fig. 11, the fifth embodiment of the present invention is different from the first embodiment in that: the trunk is arranged at the front part of the vehicle body, the structure of the range-extending battery rack is different, the range-extending battery rack of the fifth embodiment is composed of a fixed base 501 and a sliding support 502, wherein the fixed base 501 is fixed in the trunk of the vehicle, the sliding support 502 is arranged on the fixed base through a lifting support 504, the sliding support 502 can be lifted to the outside of the trunk, the range-extending battery pack 503 is arranged on the sliding support 502 in a pluggable mode, and the structure of the range-extending battery pack of the fifth embodiment is the same as that of the first embodiment.
When the battery replacement operation is performed in the third, fourth, and fifth embodiments, the sliding support may be moved to a position of the sliding support, where a part of the sliding support extends out of the trunk, the extended-range battery pack or the battery module in the extended-range battery pack may be replaced (that is, the extended-range battery pack that has been used up may be pulled out from the sliding support for replacement, or the battery module that has been used up may be pulled out from the battery frame of the extended-range battery pack for replacement), and the sliding support may be pushed in after the replacement is completed, so that the operation of inserting and pulling out the extended-range battery pack or the battery module may be performed outside the vehicle body, and the friction on the vehicle shell (surface) may be avoided.
As shown in fig. 12, in the sixth embodiment of the present invention, the control unit is composed of a plurality of mode selection switches and a control module G4 for controlling on/off of each mode selection switch, Q4 in fig. 12 is a main motor, E41 is a battery module in a range-extended battery pack, E43 and E45 are battery modules in a main battery pack, which are all controlled by the control module G4, and K41, K42, K43, K44, K45 and K46 are all mode selection switches;
the control module G4 can adopt a single chip microcomputer or a vehicle-mounted running computer, each switch control signal output end of the control module G4 is respectively connected to the control end of each mode selection switch, a battery module E41 in the range-extended battery pack is connected with the main motor Q through the mode selection switch K42, a battery module E41 in the range-extended battery pack is connected with battery modules E43 and E45 in the main battery pack through the mode selection switches K41, K43 and K45, the battery modules E43 and E45 in the main battery pack are respectively connected with the main motor Q4 through the mode selection switches K44 and K46, and the control module G4 controls the main battery pack and the range-extended battery pack by controlling the on-off of each mode selection switch;
in the first working mode, the mode selection switches K41, K42, K43 and K45 are closed and conducted, the mode selection switches K44 and K46 are opened, the main motor Q4 is driven by the battery module E41 in the extended-range battery pack, and meanwhile, the battery module E41 in the extended-range battery pack charges the battery modules E43 and E45 in the main battery pack through the mode selection switches K41, K43 and K45;
in the second operation mode, the mode selection switches K41, K44 (or K46), and K45 (or K43) are turned on, the mode selection switches K42, K43 (or K45), and K46 (or K44) are turned off, the battery module E43 (or E45) in the main battery pack drives the main motor Q4 through the mode selection switch K44 (or K46), and the battery module E41 in the range-extended battery pack charges the battery module E45 (or E43) in the main battery pack through the mode selection switches K41, K45 (or K43).
Claims (10)
1. The utility model provides an increase form electric automobile driving system, includes the automobile body, and is used for driving the main motor that the automobile body marchd, and for main battery group, the range extender that main motor provided electric power, be equipped with the control unit who is used for controlling main battery group, the work of range extender on the automobile body, the control unit connects main battery group, range extender and main motor respectively, its characterized in that: the range extender is a range extension battery pack, a range extension battery frame is fixed in a luggage compartment of the vehicle body, the range extension battery pack is installed on the range extension battery frame in a pluggable mode, and the range extension battery pack can provide electric power for the main motor and/or charge the main battery pack under the control of the control unit.
2. The extended range electric vehicle powertrain of claim 1, wherein: the range-extending battery pack is composed of a battery frame and at least one battery module, the battery frame is installed on the range-extending battery frame in a pluggable mode, a plurality of battery slots are formed in the battery frame, each battery module in the range-extending battery pack is respectively inserted into each battery slot in the battery frame in a pluggable mode, electric connecting pieces which are matched with each other are respectively arranged on the battery module and in the battery slot, and electric connecting pieces which are matched with each other are also respectively arranged on the range-extending battery frame and on the battery frame, so that the battery module can be connected to the control unit through the connection of the battery module and the electric connecting pieces on the battery frame.
3. The extended range electric vehicle powertrain of claim 2, wherein: the control unit consists of a plurality of mode selection switches and a control module for controlling the on-off of each mode selection switch, and each switch control signal output end of the control module is respectively connected to the control end of each mode selection switch;
each battery module in the range-extended battery pack is connected with a main motor through a mode selection switch respectively, each battery module in the range-extended battery pack is connected with each battery module in the main battery pack through the mode selection switch respectively, and each battery module in the main battery pack is connected with the main motor through the mode selection switch respectively;
the control module controls the on-off of each mode selection switch to control the battery module in the range-extended battery pack to provide power for the main motor and/or charge the battery module in the main battery pack;
the control module controls the battery modules in the main battery pack to supply power to the main motor by controlling the on-off of each mode selection switch.
4. The extended range electric vehicle powertrain of claim 1, wherein: the main battery pack is mounted on a chassis of the vehicle body.
5. The extended range electric vehicle powertrain of claim 1, wherein: the battery capacity of the range-extended battery pack is 1/7-1/2 times of that of the main battery pack.
6. The extended range electric vehicle powertrain of claim 1, wherein: the luggage compartment is provided at the front or/and rear of the vehicle body.
7. The extended range electric vehicle powertrain of claim 2, wherein: and a battery inlet and outlet is formed in one end of the battery slot, so that the battery module can be horizontally drawn out or inserted into the battery slot through the battery inlet and outlet.
8. The extended range electric vehicle powertrain of claim 2, wherein: the notch of the battery slot is opened upward so that the battery module can be lifted upward or inserted downward into the battery slot through the notch of the battery slot.
9. The extended range electric vehicle powertrain of claim 7 or 8, wherein: the range-extending battery rack is composed of a fixed base and a sliding support, wherein the fixed base is fixed in a luggage compartment of an automobile, the sliding support is installed on the fixed base in a sliding fit mode, the sliding support can slide to the part of the sliding support to extend out of the luggage compartment, and the range-extending battery pack is installed on the sliding support in a pluggable mode.
10. The extended range electric vehicle powertrain of claim 7 or 8, wherein: the range-extending battery rack consists of a fixed base and a sliding support, wherein the fixed base is fixed in a trunk of the automobile, the sliding support is arranged on the fixed base through a lifting support and can ascend to the outside of the trunk, and the range-extending battery pack is arranged on the sliding support in a pluggable mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2020/135497 WO2021115398A1 (en) | 2019-12-13 | 2020-12-10 | Extended-range electric vehicle power system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911280941 | 2019-12-13 | ||
| CN2019112809414 | 2019-12-13 |
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| CN112498129A true CN112498129A (en) | 2021-03-16 |
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| CN202011426697.0A Pending CN112498129A (en) | 2019-12-13 | 2020-12-09 | Range-extending type electric automobile power system |
| CN202090000998.4U Active CN219133868U (en) | 2019-12-13 | 2020-12-10 | Range-extending type electric automobile power system |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202090000998.4U Active CN219133868U (en) | 2019-12-13 | 2020-12-10 | Range-extending type electric automobile power system |
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| WO (1) | WO2021115398A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114336886A (en) * | 2022-01-06 | 2022-04-12 | 浙江吉利控股集团有限公司 | Extended range charging system and method |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013044357A1 (en) * | 2011-09-26 | 2013-04-04 | Magna E-Car Systems Of America, Inc. | Control strategies for state of charge of battery pack for electric vehicle with range extender |
| CN203085663U (en) * | 2013-01-31 | 2013-07-24 | 广东易事特电源股份有限公司 | Plugging type battery cabinet |
| CN104103865B (en) * | 2014-07-22 | 2016-05-18 | 合肥国轩高科动力能源有限公司 | The increasing journey battery pack system of pure electric automobile |
| CN104786866A (en) * | 2015-04-23 | 2015-07-22 | 深圳电擎科技有限公司 | Electric car and bi-directional inversion type motor controller |
| CN106627189A (en) * | 2016-05-23 | 2017-05-10 | 上海鼎研智能科技有限公司 | Electric car range extending system and range-extended electric car |
| WO2019213350A1 (en) * | 2018-05-04 | 2019-11-07 | Hybrid Kinetic Motors Corporation | Range-extended electric vehicles having lithium titanate oxide (lto) battery with super high charge and discharge rates |
| CN209487662U (en) * | 2018-11-30 | 2019-10-11 | 帝亚一维新能源汽车有限公司 | A kind of detachable battery packet, electrokinetic cell system and electric car |
-
2020
- 2020-12-09 CN CN202011426697.0A patent/CN112498129A/en active Pending
- 2020-12-10 WO PCT/CN2020/135497 patent/WO2021115398A1/en active Application Filing
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114336886A (en) * | 2022-01-06 | 2022-04-12 | 浙江吉利控股集团有限公司 | Extended range charging system and method |
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| Publication number | Publication date |
|---|---|
| CN219133868U (en) | 2023-06-06 |
| WO2021115398A1 (en) | 2021-06-17 |
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