CN111439157A - Quick-change bracket, vehicle and electric control method - Google Patents
Quick-change bracket, vehicle and electric control method Download PDFInfo
- Publication number
- CN111439157A CN111439157A CN201811647271.0A CN201811647271A CN111439157A CN 111439157 A CN111439157 A CN 111439157A CN 201811647271 A CN201811647271 A CN 201811647271A CN 111439157 A CN111439157 A CN 111439157A
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- China
- Prior art keywords
- battery pack
- vehicle
- quick
- fixed
- annular frame
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Classifications
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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
-
- 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
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/80—Exchanging energy storage elements, e.g. removable batteries
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/12—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- 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
- B60K2001/0455—Removal or replacement of the energy storages
-
- 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
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
Abstract
The invention discloses a quick-change bracket, a vehicle and an electric control method. This quick change support includes: an annular frame and a stationary battery pack; the fixed battery pack is arranged at one end of the interior of the annular frame, and the other end of the interior of the annular frame is used for fixing the detachable battery pack. The vehicle comprises a quick-change bracket as described above. The electronic control method is used for controlling the vehicle. This quick change support is equipped with fixed battery package, and when the vehicle continuation of the journey demand hour, can only use fixed battery package can satisfy the requirement of traveling of vehicle, has saved the use cost who changes the battery like this. When the vehicle duration demand is big, can install again and dismantle the battery package, improve vehicle duration, the application scope of vehicle is wider like this. The vehicle comprising the quick-change bracket can save the use cost and enlarge the application range. The electric control method is used for controlling the vehicle.
Description
Technical Field
The invention relates to the field of quick-change electric vehicles, in particular to a quick-change bracket, a vehicle and an electric control method.
Background
At present, the pure electric vehicle adopts the electricity replacement as a better mode for solving the electricity supplement of the pure electric vehicle due to the factors of difficult parking, no fixed parking space, no fixed charging pile, large influence of quick charging on the service life of a battery of the whole vehicle and the like in a city.
Therefore, the battery pack of the pure electric vehicle adopting the battery replacement structure is one of the necessary choices of the urban electric vehicles in the future. The quick-change battery pack structure is arranged on the whole vehicle, the whole vehicle can increase the electricity supplementing mode of whole pack electricity replacement, the battery life is fast and safely not influenced, and the problem of anxiety of the endurance mileage is solved. The mode is suitable for operation type vehicles and is used uninterruptedly. However, as long as a lot of vehicles in a city meet the needs of going to work and going to work for transportation within 100 kilometers per day, a part of vehicle purchasing and use cost is undoubtedly increased for the vehicles with the current travel distance of more than 400 kilometers. Therefore, the battery replacement mode also needs to be diversified under the diversified use requirement.
Disclosure of Invention
The invention aims to overcome the defect that the vehicle in the prior art is low in endurance requirement and high in use cost, and provides a quick-change bracket, a vehicle and an electric control method.
The invention solves the technical problems through the following technical scheme:
a quick-change stent, comprising: an annular frame and a stationary battery pack;
the fixed battery pack is arranged at one end of the interior of the annular frame, and the other end of the interior of the annular frame is used for fixing the detachable battery pack.
Preferably, the quick-change support further comprises a fixing frame, the fixing frame is used for installing the fixed battery pack, the fixing frame is erected at one end of the inside of the annular frame and attached to the inner surface of the annular frame.
Preferably, the side wall of the fixed frame is provided with a lock column, and the lock column is jointed with a lock base arranged on the inner wall of the side edge of the annular frame;
and/or the fixed frame is fixedly connected with the annular frame through a threaded member.
Preferably, both sides of the fixed frame are provided with cushion blocks, threaded holes are formed in the cushion blocks, and the threaded members penetrate through the side edges and are screwed into the threaded holes.
Preferably, the pad is provided at one side of the lock base.
Preferably, the fixing frame is a box-shaped member.
Preferably, the annular frame is of a convex structure, and the fixed battery pack is arranged at the narrower end of the annular frame.
Preferably, the external interface of the stationary battery pack is provided on a surface of the stationary battery pack facing the inside of the ring frame.
Preferably, the external interfaces are a cooling water circulation inlet and outlet and an electric connection port.
Preferably, a second electrical connection port is arranged on the annular frame, and the second electrical connection port is used for electrically connecting the detachable battery pack.
A vehicle comprising a quick-change bracket as described above.
An electronic control method for controlling a vehicle as described above; the electric control method comprises the following steps:
s1: detecting the electric quantity of the fixed battery pack;
s2: judging whether the electric quantity of the fixed battery pack is in a first threshold range, if so, executing step S3, otherwise, executing step S4;
s3: sending a power supply instruction to a fixed battery pack, wherein the fixed battery pack is electrically connected with a vehicle;
s4: detecting whether the vehicle is provided with a detachable battery pack, if so, executing S5, otherwise, triggering an alarm device and stopping the vehicle;
s5: and detecting the electric quantity of the detachable battery pack, judging whether the electric quantity of the detachable battery pack is in a second threshold range, if so, executing S6, otherwise, triggering an alarm device and stopping the running of the vehicle.
S6: and sending a power supply instruction to the detachable battery pack, wherein the detachable battery pack is electrically connected with the vehicle.
Preferably, the first threshold range is equal to or greater than 30%, and the second threshold range is equal to or greater than 30%.
Preferably, the alarm device is a warning light or a sound device arranged in the vehicle.
Preferably, the vehicle further comprises a fixed battery pack detection unit, a detachable battery pack detection unit, a control unit, a driving unit and a switching unit;
the driving unit is used for driving the vehicle to run;
the fixed battery pack detection unit is used for detecting the electric quantity of the fixed battery pack;
the detachable battery pack detection unit is used for detecting the electric quantity of the detachable battery pack detection unit;
the switching unit is used for switching between the electric connection between the fixed battery pack and the driving unit and the electric connection between the detachable battery pack and the driving unit;
the control unit is electrically connected with the fixed battery pack detection unit, the detachable battery pack detection unit, the driving unit, the switching unit and the alarm device, and is used for receiving the electric quantity data of the fixed battery pack detection unit and the electric quantity data of the detachable battery pack detection unit and judging the electric connection switching between the fixed battery pack and the detachable battery pack according to the electric quantity data.
The positive progress effects of the invention are as follows: this quick change support is equipped with fixed battery package, and when the vehicle continuation of the journey demand hour, can only use fixed battery package can satisfy the requirement of traveling of vehicle, has saved the use cost who changes the battery like this. When the vehicle duration demand is big, can install again and dismantle the battery package, improve vehicle duration, the application scope of vehicle is wider like this. The vehicle comprising the quick-change bracket can save the use cost and enlarge the application range. The electric control method is used for controlling the vehicle.
Drawings
Fig. 1 is a perspective view of a quick-change holder according to a preferred embodiment of the invention.
Fig. 2 is another perspective view of a quick-change holder according to a preferred embodiment of the invention, in which a removable battery pack is mounted thereon.
Fig. 3 is a schematic view of the structure of the pad part of the quick-change holder according to a preferred embodiment of the invention.
Fig. 4 is a block schematic diagram of a vehicle according to a preferred embodiment of the present invention.
Fig. 5 is a flow chart illustrating an electrical control method according to a preferred embodiment of the present invention.
Description of reference numerals:
quick-change support 10
Fixed frame 12
Cushion block 15
Cooling water circulation inlet and outlet 16
Notch 18
Fixed battery pack detection unit 19
Detachable battery pack detection unit 20
Detailed Description
The present invention is further illustrated by way of example and not by way of limitation in the scope of the following examples in connection with the accompanying drawings.
As shown in fig. 1-3, the quick-change holder 10 includes: a ring frame 11 and a stationary battery pack.
The fixed battery pack is arranged at one end of the inner part of the annular frame 11, and the other end of the inner part of the annular frame 11 is used for fixing the detachable battery pack 13.
The shape of the ring frame 11 is preferably the same as that of the existing quick-change holder 10, for ease of manufacture and replacement of parts.
The detachable battery pack 13 is preferably connected in the same manner as the existing battery pack and quick-change bracket 10, and is mounted and connected by means of the lock cylinder and the lock base 14.
The quick-change support 10 further comprises a fixing frame 12, the fixing frame 12 is used for installing and fixing the battery pack, and the fixing frame 12 is arranged at one end of the inside of the annular frame 11 and is attached to the inner surface of the annular frame 11.
The side walls of the fixed frame 12 are provided with locking studs which engage with locking seats 14 provided on the side inner walls of the ring frame 11.
The fixed frame 12 is fixedly connected to the ring frame 11 by a screw member. The threaded member may be a bolt or a screw.
Cushion blocks 15 are arranged on two sides of the fixed frame 12, threaded holes are formed in the cushion blocks 15, and threaded members penetrate through the side edges and are screwed into the threaded holes.
The spacer 15 is used to adjust the gap between the fixing frame 12 and the ring frame 11 so that the fixing frame 12 does not shake in the lateral direction, and may be used to engage a threaded member.
The pad 15 is provided on one side of the lock base 14. The spacer 15 is spaced from the lock base 14 to avoid interference with the engagement of the lock cylinder of the fixed frame 12 with the lock base 14. In fig. 3, the lock base 14 on the ring frame 11 is shown for clarity of illustration.
The fixed frame 12 is a box-like member. The fixed battery pack is arranged in the fixed battery pack.
The annular frame 11 is in a convex structure, and the fixed battery pack is arranged at the narrower end of the annular frame 11.
The external interface of the stationary battery pack is provided on the surface of the stationary battery pack facing the inside of the ring frame 11.
The detachable battery is correspondingly provided with a notch 18 to allow for the position of the external interface.
The external interfaces are a cooling water circulation inlet and outlet 16 and an electric connection port 17.
The annular frame 11 is provided with a second electrical connection port 17, and the second electrical connection port 17 is used for electrically connecting the detachable battery pack 13.
The quick-change support 10 is provided with the fixed battery pack, so that the driving requirement of the vehicle can be met only by using the fixed battery pack when the vehicle is in a cruising demand, and the use cost for replacing the battery is saved. When the vehicle duration demand is big, can install again and dismantle battery package 13, improve vehicle duration, the application scope of vehicle is wider like this.
As shown in fig. 4, the present embodiment also provides a vehicle, and the vehicle includes the quick-change bracket 10 as above.
The vehicle further includes a fixed battery pack detection unit 19, a detachable battery pack detection unit 20, a control unit 21, a drive unit 22, a switching unit 23;
the driving unit 22 is used for driving the vehicle to run;
the fixed battery pack detection unit 19 is used for detecting the electric quantity of the fixed battery pack;
the detachable battery pack detection unit 20 is used for detecting the electric quantity of the detachable battery pack detection unit 20;
the switching unit 23 is used to switch between the electrical connection of the stationary battery pack to the driving unit 22 and the electrical connection of the detachable battery pack 13 to the driving unit 22;
the control unit 21 is electrically connected to the fixed battery pack detection unit 19, the detachable battery pack detection unit 20, the driving unit 22, the switching unit 23 and the alarm device, and is configured to receive the electric quantity data of the fixed battery pack detection unit 19 and the electric quantity data of the detachable battery pack detection unit 20, and determine the electrical connection switching between the fixed battery pack and the detachable battery pack 13 according to the electric quantity data.
The vehicle comprising the quick-change bracket 10 can save the use cost and enlarge the application range.
As shown in fig. 5, the present embodiment also provides an electronic control method for controlling the vehicle as above; the electric control method comprises the following steps:
s1: detecting the electric quantity of the fixed battery pack;
s2: judging whether the electric quantity of the fixed battery pack is in a first threshold range, if so, executing step S3, otherwise, executing step S4;
s3: sending a power supply instruction to a fixed battery pack, wherein the fixed battery pack is electrically connected with a vehicle;
s4: detecting whether the vehicle is provided with the detachable battery pack 13, if so, executing S5, otherwise, triggering an alarm device and stopping the vehicle;
s5: and detecting the electric quantity of the detachable battery pack 13, and judging whether the electric quantity of the detachable battery pack 13 is in a second threshold range, if so, executing S6, otherwise, triggering an alarm device and stopping the running of the vehicle.
S6: and sending a power supply instruction to the detachable battery pack 13, wherein the detachable battery pack 13 is electrically connected with the vehicle.
Preferably, the first threshold range is greater than or equal to 30% and the second threshold range is greater than or equal to 30% of the total electric quantity of the battery pack when the battery pack is fully charged is 100%.
The alarm device can be a warning lamp or a sound generating device arranged in the vehicle.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore, should not be construed as limiting the present invention unless otherwise specified herein.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.
Claims (15)
1. A quick-change holder, comprising: an annular frame and a stationary battery pack;
the fixed battery pack is arranged at one end of the interior of the annular frame, and the other end of the interior of the annular frame is used for fixing the detachable battery pack.
2. The quick-change bracket according to claim 1, further comprising a fixing frame for mounting the battery pack, wherein the fixing frame is mounted at one end of the interior of the annular frame and is disposed to abut against the inner surface of the annular frame.
3. The quick-change holder according to claim 2, characterized in that the side walls of the fixed frame are provided with locking studs which engage with locking seats provided on the side inner walls of the annular frame;
and/or the fixed frame is fixedly connected with the annular frame through a threaded member.
4. The quick-change holder according to claim 3, characterized in that the securing frame is provided on both sides with spacers, in which threaded holes are provided, through which the threaded members are passed and screwed.
5. The quick-change holder according to claim 4, wherein the spacer is provided on one side of the lock base.
6. The quick-change holder according to claim 2, wherein the securing frame is a box-like member.
7. The quick-change holder according to claim 1, wherein the annular frame is of a "convex" configuration, and the fixed battery pack is disposed at a narrower end of the annular frame.
8. The quick-change holder according to claim 1, wherein the external interface for the stationary battery pack is provided on a surface of the stationary battery pack facing the interior of the ring frame.
9. The quick-change holder according to claim 8, wherein the external interfaces are a cooling water circulation inlet and an electrical connection port.
10. The quick-change holder according to claim 9, wherein a second electrical connection port is provided on the annular frame for electrically connecting the removable battery pack.
11. A vehicle, characterized in that the vehicle comprises a quick-change holder according to any one of claims 1-10.
12. An electric control method characterized by being used for controlling the vehicle according to claim 11; the electric control method comprises the following steps:
s1: detecting the electric quantity of the fixed battery pack;
s2: judging whether the electric quantity of the fixed battery pack is in a first threshold range, if so, executing step S3, otherwise, executing step S4;
s3: sending a power supply instruction to a fixed battery pack, wherein the fixed battery pack is electrically connected with a vehicle;
s4: detecting whether the vehicle is provided with a detachable battery pack, if so, executing S5, otherwise, triggering an alarm device and stopping the vehicle;
s5: and detecting the electric quantity of the detachable battery pack, judging whether the electric quantity of the detachable battery pack is in a second threshold range, if so, executing S6, otherwise, triggering an alarm device and stopping the running of the vehicle.
S6: and sending a power supply instruction to the detachable battery pack, wherein the detachable battery pack is electrically connected with the vehicle.
13. The electrical control method according to claim 12, wherein the first threshold range is 30% or more, and the second threshold range is 30% or more.
14. An electronic control method according to claim 13, characterized in that the alarm device is a warning light or a sound device provided inside the vehicle.
15. An electric control method according to claim 13, wherein the vehicle further includes a fixed battery pack detection unit, a detachable battery pack detection unit, a control unit, a drive unit, a switching unit;
the driving unit is used for driving the vehicle to run;
the fixed battery pack detection unit is used for detecting the electric quantity of the fixed battery pack;
the detachable battery pack detection unit is used for detecting the electric quantity of the detachable battery pack detection unit;
the switching unit is used for switching between the electric connection between the fixed battery pack and the driving unit and the electric connection between the detachable battery pack and the driving unit;
the control unit is electrically connected with the fixed battery pack detection unit, the detachable battery pack detection unit, the driving unit, the switching unit and the alarm device, and is used for receiving the electric quantity data of the fixed battery pack detection unit and the electric quantity data of the detachable battery pack detection unit and judging the electric connection switching between the fixed battery pack and the detachable battery pack according to the electric quantity data.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811647271.0A CN111439157B (en) | 2018-12-29 | 2018-12-29 | Quick-change bracket, vehicle and electric control method |
| CN202210447250.4A CN114889418A (en) | 2018-12-29 | 2018-12-29 | Quick-change bracket, vehicle and electric control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811647271.0A CN111439157B (en) | 2018-12-29 | 2018-12-29 | Quick-change bracket, vehicle and electric control method |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210447250.4A Division CN114889418A (en) | 2018-12-29 | 2018-12-29 | Quick-change bracket, vehicle and electric control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111439157A true CN111439157A (en) | 2020-07-24 |
| CN111439157B CN111439157B (en) | 2022-03-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811647271.0A Active CN111439157B (en) | 2018-12-29 | 2018-12-29 | Quick-change bracket, vehicle and electric control method |
| CN202210447250.4A Pending CN114889418A (en) | 2018-12-29 | 2018-12-29 | Quick-change bracket, vehicle and electric control method |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210447250.4A Pending CN114889418A (en) | 2018-12-29 | 2018-12-29 | Quick-change bracket, vehicle and electric control method |
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| Country | Link |
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| CN (2) | CN111439157B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112092598A (en) * | 2020-09-17 | 2020-12-18 | 湖南铂诚数字科技有限公司 | Electric engineering machine capable of quickly replacing power battery pack |
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| DE102009042001A1 (en) * | 2009-09-21 | 2011-03-24 | Werner & Weber Gmbh | Vehicle e.g. lorry, for use in road traffic system, has electric drive comprising two loadable batteries with two storage capacities, where vehicle is operated by power supply of electric drive using two loadable batteries |
| CN105109321A (en) * | 2015-08-20 | 2015-12-02 | 北京新能源汽车股份有限公司 | Locking mechanism, quick battery pack replacing device with same and vehicle |
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2018
- 2018-12-29 CN CN201811647271.0A patent/CN111439157B/en active Active
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| DE102009042001A1 (en) * | 2009-09-21 | 2011-03-24 | Werner & Weber Gmbh | Vehicle e.g. lorry, for use in road traffic system, has electric drive comprising two loadable batteries with two storage capacities, where vehicle is operated by power supply of electric drive using two loadable batteries |
| CN105109321A (en) * | 2015-08-20 | 2015-12-02 | 北京新能源汽车股份有限公司 | Locking mechanism, quick battery pack replacing device with same and vehicle |
| CN205033930U (en) * | 2015-09-29 | 2016-02-17 | 北京新能源汽车股份有限公司 | Electric vehicle |
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| CN108749617A (en) * | 2018-06-11 | 2018-11-06 | 浙江衡远新能源科技有限公司 | A kind of interchangeable electric battery control system of electric vehicle |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112092598A (en) * | 2020-09-17 | 2020-12-18 | 湖南铂诚数字科技有限公司 | Electric engineering machine capable of quickly replacing power battery pack |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114889418A (en) | 2022-08-12 |
| CN111439157B (en) | 2022-03-22 |
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