CN114290948A - Locking device and battery replacement system - Google Patents
Locking device and battery replacement system Download PDFInfo
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- CN114290948A CN114290948A CN202111674689.2A CN202111674689A CN114290948A CN 114290948 A CN114290948 A CN 114290948A CN 202111674689 A CN202111674689 A CN 202111674689A CN 114290948 A CN114290948 A CN 114290948A
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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
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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
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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Abstract
The invention relates to a locking device and a battery replacement system, which comprise a telescopic piece, a driving unit and a detection unit; the telescopic piece is provided with an unlocking position and a locking position; the driving unit is used for driving the telescopic piece to be converted from the unlocking position to the locking position or used for driving the telescopic piece to be converted from the locking position to the unlocking position; the detection unit comprises a first detection piece and a second detection piece, wherein the first detection piece is used for detecting whether the telescopic piece is located at the unlocking position, and the second detection piece is used for detecting whether the telescopic piece is located at the locking position. The battery replacement system comprises a battery replacement device and a battery replacement base, a joint state and a disconnection state are formed between the battery replacement device and the battery replacement base, when the battery replacement device is in the joint state, the battery replacement interface I is inserted into the battery replacement interface II, and the locking device is locked in the corresponding locking hole; when the locking device is in a disconnecting state, the first battery replacing interface is separated from the second battery replacing interface, and the locking device is unlocked from the corresponding locking hole. This trade electric system realizes multiple charge mode, and the practicality is strong, solves the defect among the prior art, more is applicable to engineering machine tool.
Description
Technical Field
The invention relates to the technical field of battery replacement systems, in particular to a locking device and a battery replacement system.
Background
With the wide application of electric vehicles, the matched electric vehicle battery energy supply system is also rapidly developed, and the national grid company has proposed to build an electric vehicle energy supply system of the national grid company according to a mode of 'mainly changing battery, secondarily changing battery by plug-in charging, centralized charging and unified distribution'.
In recent years, with the support of electric vehicle technology, the development of electric loaders has achieved remarkable results. However, the construction machinery is significantly different from the automobile in the aspects of structural form, working condition type, working environment and the like, so that the problems of complex technical path, poor platform universality and the like exist in the aspects of a high-voltage system, an electricity utilization environment and the like of the construction machinery.
Although the current price of a pure electric engineering vehicle is still higher than that of a fuel vehicle, due to the characteristics of high-intensity work and long-time attendance, the gap of the acquisition cost can be quickly reduced in the aspects of energy consumption and maintenance in subsequent use.
The medium and heavy engineering vehicle has high power distribution quantity and long charging time. Moreover, the vehicle type has centralized working time and places, large charging floor area and high requirement on charging facilities. Therefore, charging is difficult to meet the use requirements of such vehicle types. As another way of supplying the electric quantity, the battery replacement is obviously more appropriate.
The battery replacement mode is more convenient to use, and has various requirements on the aspects of a battery replacement station, a battery, a power grid and the like. The whole vehicle charging mode can only adopt a charging mode to supply energy due to the fact that the vehicle and the battery are integrated, the service mode is charging of a charging pile, and the charging mode mainly comprises a quick charging mode and a common charging mode. The resource form of the charging station is charging pile, and the construction is influenced by geographical position, power grid layout and the like. However, the method provides a huge challenge for the problem that the electric engineering machinery is difficult to charge because the electric engineering machinery has large electricity consumption and small customer clusters, has special requirements on construction cost of power change stations, power grids, geographical positions and the like, and has huge investment capital and low input-output ratio, and many small customers cannot bear the investment of construction of power change stations.
The prior art has the following defects: the charging of the battery replacement system depends on the battery replacement station and the complete machine, and after the battery replacement system leaves the battery replacement station and the complete machine, the traditional charging pile cannot be used for charging; the battery replacement locking device adopts hydraulic pressure or an air circuit as a power source and depends on the configuration of the whole vehicle; when the whole vehicle is provided with a hydraulic system, hydraulic pressure is adopted as a power source of the locking mechanism; when the whole vehicle is provided with a gas circuit system, a gas circuit is adopted as a power source of the locking mechanism; the unlocking and locking state of the battery replacement locking device is detected incompletely, and each locking device is subjected to unlocking and locking state detection, so that false detection and false operation are avoided; the power switching interface is free of plug detection and temperature detection, the surface of the power switching interface is damaged due to frequent plugging and unplugging of a power switching system, the resistance is increased, and the temperature is increased in the working process of the whole machine, so that ignition and combustion are caused; the power conversion system in the industry is developed for passenger vehicles or commercial vehicles, and the characteristics of the whole engineering machinery, the operation working condition and the road condition are not considered.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a locking device and a battery replacement system.
In a first aspect, the present invention provides a locking device.
A locking device comprises a telescopic piece, a driving unit and a detection unit; the telescopic piece is provided with an unlocking position and a locking position; the driving unit is used for driving the telescopic piece to be converted from the unlocking position to the locking position, or used for driving the telescopic piece to be converted from the locking position to the unlocking position; the detection unit comprises a first detection piece and a second detection piece, wherein the first detection piece is used for detecting whether the telescopic piece is located at an unlocking position or not, and the second detection piece is used for detecting whether the telescopic piece is located at a locking position or not; the locking device has an unlocking state and a locking state, when the locking device is in the unlocking state, the telescopic piece is in the unlocking position, and the first detection piece outputs an effective detection signal; when the telescopic piece is in a locking state, the telescopic piece is in a locking position, and the second detection piece outputs an effective detection signal.
Optionally, the telescopic member comprises a telescopic rod and a locking pin which are coaxially connected.
Optionally, the locking device further includes a sleeve, a channel for the telescopic rod to move is formed inside the sleeve, the first detecting piece and the second detecting piece are respectively located in two ends of the sleeve, the length of the channel is greater than that of the telescopic rod, and the distance between the first detecting piece and the second detecting piece is not less than that of the telescopic rod.
Optionally, the driving unit is a driving motor, and the first detecting part and the second detecting part are both detecting switches.
Optionally, when locking is performed in advance, the driving unit drives the telescopic part to extend out until the second detection part outputs an effective detection signal, the driving unit stops working, and the locking device is in a locking state; when the locking device is unlocked in advance, the driving unit drives the telescopic piece to retract until the first detection piece outputs an effective detection signal, the driving unit stops working, and the locking device is in an unlocking state.
In a second aspect, the invention provides a battery swapping system.
A battery replacement system comprises a battery replacement device and a battery replacement base, wherein the battery replacement device comprises a battery system, a battery replacement interface I and a locking hole, the battery replacement base comprises a base body, a battery replacement interface II and any one locking device, a joint state and a disconnection state are formed between the battery replacement device and the battery replacement base, when the battery replacement device is in the joint state, the battery replacement interface I is connected with the battery replacement interface II in an inserting mode, and the locking device is locked in the corresponding locking hole; when the locking device is in a disconnecting state, the first battery replacing interface is separated from the second battery replacing interface, and the locking device is unlocked from the corresponding locking hole.
Optionally, when the battery replacement device and the battery replacement base are in a disconnected state, the battery replacement device enters a single charging mode.
Optionally, the battery replacing device further includes a battery power distribution system, the battery power distribution system includes a low-voltage DCDC, and the low-voltage DCDC is used for providing a low-voltage power supply to the battery replacing system when the charging pile is charged.
Optionally, the battery replacement device further includes a battery heat dissipation system.
Optionally, the battery power distribution system further includes a battery high voltage distribution box and a dc charging base.
Optionally, the number of the locking holes is the same as the number of the locking devices.
Compared with the prior art, the technical scheme of the invention has the following beneficial effects: the locking device controls the locking/unlocking state through the driving unit and the locking unit, is simple and reliable, is applied to the battery replacement system, provides power for the driving unit in the battery replacement system, and can realize three charging modes: charging is carried out in the battery replacing station through a battery replacing interface; performing direct-current charging through a charging gun of the direct-current high-voltage charging pile; the battery replacement system is arranged on the whole vehicle and can be used for directly carrying out gun insertion charging through the direct-current charging pile; the practicability is strong, the defects in the prior art are overcome, and the device is more suitable for engineering machinery.
Drawings
FIG. 1 is a schematic structural view of a locking device of the present invention;
FIG. 2 is a schematic view of a locking hole in the battery swapping system of the present invention;
fig. 3 is a schematic structural diagram (in a connected state) of the battery swapping system according to the present invention;
fig. 4 is a schematic structural diagram (disengaged state) of the battery swapping system of the present invention;
fig. 5 is a flowchart of determining the charging mode.
In the drawings: 10-a locking device, 11-a telescopic rod, 12-a locking pin, 13-a first detection piece, 14-a second detection piece, 15-a driving motor, 1-a locking hole, 2-a battery system, 3-a battery power distribution system, 4-a battery heat dissipation system, 5-a battery replacement interface I, 6-a battery replacement interface II and 7-a battery replacement base.
Detailed Description
Exemplary embodiments of the present invention are described below with reference to the accompanying drawings, in which various details of embodiments of the invention are included to assist understanding, and which are to be considered as merely exemplary. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the invention. Also, descriptions of well-known functions and constructions are omitted in the following description for clarity and conciseness.
Example one
As shown in fig. 1, a locking device includes a telescopic member, a driving unit and a detecting unit; the telescopic piece is provided with an unlocking position and a locking position; the driving unit is used for driving the telescopic piece to be converted from the unlocking position to the locking position or used for driving the telescopic piece to be converted from the locking position to the unlocking position; the detection unit comprises a first detection piece 13 for detecting whether the telescopic piece is in the unlocking position and a second detection piece 14 for detecting whether the telescopic piece is in the locking position; the locking device 10 has an unlocking state and a locking state, when the locking device is in the unlocking state, the telescopic part is in the unlocking position, and the first detection part 13 outputs an effective detection signal; in the locked state, the extendable member is in the locked position and the second sensing member 14 outputs a valid sensing signal.
More specifically, the telescopic member comprises a telescopic rod 11 and a locking pin 12 which are coaxially connected; the locking device 10 further comprises a sleeve, a channel for the telescopic rod 11 to move is formed in the sleeve, the first detection piece 13 and the second detection piece 14 are respectively located in two ends of the sleeve, the length of the channel is greater than that of the telescopic rod 11, and the distance between the first detection piece 13 and the second detection piece 14 is not less than that of the telescopic rod 11; the driving unit is a driving motor 15, and the first detection piece 13 and the second detection piece 14 are detection switches; when locking is performed in advance, the driving unit drives the telescopic piece to extend out until the second detection piece 14 outputs an effective detection signal, the driving unit stops working, and the locking device 10 is in a locking state; when the unlocking is performed in advance, the driving unit drives the telescopic member to retract until the first detection member 13 outputs an effective detection signal, the driving unit stops working, and the locking device 10 is in an unlocking state.
The detection switch can be a magnetic switch, a position switch or a Hall switch.
Example two
As shown in fig. 2 to 5, a battery replacing system includes a battery replacing device and a battery replacing base 7, the battery replacing device includes a battery system 2, a battery replacing interface one 5 and a locking hole 1, the battery replacing base 7 includes a base body, a battery replacing interface two 6 and a locking device 10 in the first embodiment, an engaging state and a disengaging state are provided between the battery replacing device and the battery replacing base 7, when the engaging state is reached, the battery replacing interface one 5 is inserted into the battery replacing interface two 6, and the locking device 10 is locked in the corresponding locking hole 1; when the locking device is in a disconnecting state, the first battery replacing interface 5 is disconnected from the second battery replacing interface 6, and the locking device 10 is unlocked from the corresponding locking hole 1; when the battery replacing device is in a disconnection state with the battery replacing base 7, the battery replacing device enters an independent charging mode; the battery replacing device further comprises a battery power distribution system 3, the battery power distribution system 3 comprises a low-voltage DCDC, and the low-voltage DCDC is used for providing a low-voltage power supply for the battery replacing system when the charging pile is charged; the battery replacement device also comprises a battery heat dissipation system 4; the battery power distribution system 3 also comprises a battery high-voltage distribution box and a direct-current charging seat; the number of the locking holes 1 is plural, and the number of the locking devices 10 is the same as the number of the locking holes 1.
The battery system 2 is formed by connecting power batteries in series and parallel, and meets the power requirement of the whole vehicle; the battery cooling system 4 is a power battery cooling system; the battery power distribution system 3 of the battery replacing device comprises a battery high-voltage distribution box, a low-voltage DCDC, a storage battery and a direct-current charging seat; the low-voltage DCDC is used for supplying a low-voltage power supply to the battery replacement system when the national standard direct current charging pile is charged; the battery replacement interface mainly comprises a battery replacement interface distribution box of the battery replacement device and a battery replacement interface of the battery replacement base 7, wherein the point replacement interface distribution box is used for fixing a battery replacement high-voltage plug-in and detecting the temperature of a high-voltage plug-in connection position in the box body; the locking holes 1 are structural members fixed on the battery replacing device, when battery replacing locking is carried out, the telescopic members of the locking mechanisms completely extend out, and the locking pins 12 are inserted into the corresponding locking holes 1 to reach a locking state; when the locking mechanism is unlocked, the telescopic piece of the locking mechanism retracts fully, and the battery replacement device enters an unlocking state.
The battery replacing base 7 comprises a battery replacing base 7, a battery replacing interface and a plurality of locking mechanisms; when the driving motor 15 rotates forwards, the telescopic rod 11 extends out to drive the locking pin 12 to move forwards and insert into the locking hole 1, and the locking state is achieved; when the driving motor 15 rotates reversely, the telescopic rod 11 is recovered to drive the locking pin 12 to move backwards, the locking pin 12 is pulled out, and the unlocking state is achieved; in the process, the output signals of the first detection piece 13 and the second detection piece 14 are collected to be used as the basis for judging the locking state and the unlocking state; the second detection piece 14 measures the telescopic state of the telescopic rod 11, and when the telescopic rod 11 is completely extended out, the switch acts to output a signal; otherwise, no action and no signal are output; the first detection piece 13 measures the telescopic state of the telescopic rod 11, and when the telescopic rod 11 is completely retracted, the switch acts to output a signal; otherwise, no action is performed and no signal is output, when the signals of the first detection parts 13 of all the locking mechanisms of the battery replacement system are effective, the controller judges that the battery replacement system enters an unlocking state, and at the moment, the battery replacement system can be detached.
After the system is charged and awakened, whether the high-voltage interlocking state of the battery replacing interface is disconnected or not is detected, if the high-voltage interlocking is disconnected, namely the battery replacing interface is disconnected, the DCDC power supply is started, and the independent national standard charging mode of the battery replacing system is entered; if the high-voltage interlocking is connected, whether the communication of the whole vehicle is normal or not is judged, if the communication of the whole vehicle is normal, a charging mode of the whole vehicle is entered, if the communication of the whole vehicle is abnormal, whether the communication of the battery replacement station is normal or not is judged, if the communication of the battery replacement station is normal, a charging mode of the battery replacement station is entered, and if the communication of the battery replacement station is abnormal, the charging is abnormal.
Compared with the prior art, the locking device and the battery replacement system provided by the embodiment of the invention have the advantages that:
(1) the charging of the battery replacement system does not depend on the battery replacement station and the whole machine, and after the battery replacement system leaves the battery replacement station and the whole machine, the battery replacement system can be charged by using a national standard direct current charging pile, so that the construction of the battery replacement station can be reduced, and the capital investment is reduced;
(2) the electric push rod locking device is adopted, the configuration of an air circuit or a hydraulic system of the whole vehicle is not depended on, the adaptability of the device is stronger, the complexity of the system is reduced, and cost reduction and efficiency improvement are realized;
(3) the plug-in state detection and the temperature detection are carried out on the power switching interface, the situations of abnormal temperature rise, fire burning and the like of a power switching interface plug-in are avoided, and the safety performance of the system is improved;
(4) and each locking device is subjected to unlocking and locking state detection, so that false detection and false operation are avoided, the fault rate is reduced, and the system reliability is improved.
The above detailed description should not be construed as limiting the scope of the invention. Those skilled in the art will appreciate that various modifications, combinations, sub-combinations, and substitutions can occur, depending on design requirements and other factors. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (11)
1. A locking device is characterized by comprising a telescopic piece, a driving unit and a detection unit;
the telescopic piece is provided with an unlocking position and a locking position;
the driving unit is used for driving the telescopic piece to be converted from the unlocking position to the locking position, or used for driving the telescopic piece to be converted from the locking position to the unlocking position;
the detection unit comprises a first detection piece and a second detection piece, wherein the first detection piece is used for detecting whether the telescopic piece is located at an unlocking position or not, and the second detection piece is used for detecting whether the telescopic piece is located at a locking position or not;
the locking device has an unlocking state and a locking state, when the locking device is in the unlocking state, the telescopic piece is in the unlocking position, and the first detection piece outputs an effective detection signal; when the telescopic piece is in a locking state, the telescopic piece is in a locking position, and the second detection piece outputs an effective detection signal.
2. The locking device of claim 1, wherein the telescoping member comprises a telescoping rod and a locking pin coaxially connected.
3. The locking device according to claim 2, further comprising a sleeve, wherein a channel for the telescopic rod to move is formed inside the sleeve, the first detecting member and the second detecting member are respectively located in two ends of the sleeve, the length of the channel is greater than that of the telescopic rod, and the distance between the first detecting member and the second detecting member is not less than that of the telescopic rod.
4. The locking device according to claim 1, 2 or 3, wherein the driving unit is a driving motor, and the first detecting member and the second detecting member are both detection switches.
5. The locking device of claim 1, wherein when pre-locking, the driving unit drives the telescopic member to extend until the second detection member outputs a valid detection signal, the driving unit stops working, and the locking device is in a locking state; when the locking device is unlocked in advance, the driving unit drives the telescopic piece to retract until the first detection piece outputs an effective detection signal, the driving unit stops working, and the locking device is in an unlocking state.
6. A battery replacement system is characterized by comprising a battery replacement device and a battery replacement base, wherein the battery replacement device comprises a battery system, a first battery replacement interface and a locking hole, the battery replacement base comprises a base body, a second battery replacement interface and the locking device of any one of claims 1 to 5, a joint state and a disconnection state are formed between the battery replacement device and the battery replacement base, the first battery replacement interface is inserted into the second battery replacement interface when the joint state is formed, and the locking device is locked in the corresponding locking hole; when the locking device is in a disconnecting state, the first battery replacing interface is separated from the second battery replacing interface, and the locking device is unlocked from the corresponding locking hole.
7. The battery swapping system of claim 6, wherein when the battery swapping device is in a disconnected state with the battery swapping base, the battery swapping device enters a single charging mode.
8. The battery swapping system of claim 6, wherein the battery swapping device further comprises a battery power distribution system comprising a low voltage DCDC for providing low voltage power to the battery swapping system when the charging post is charging.
9. The battery swapping system of claim 7, wherein the battery swapping device further comprises a battery heat dissipation system.
10. The swapping system of claim 8 wherein the battery power distribution system further comprises a battery high voltage distribution box and a dc charging cradle.
11. The battery swapping system as in one of claims 6-10, wherein the number of locking holes is the same as the number of locking holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111674689.2A CN114290948A (en) | 2021-12-31 | 2021-12-31 | Locking device and battery replacement system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111674689.2A CN114290948A (en) | 2021-12-31 | 2021-12-31 | Locking device and battery replacement system |
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| CN114290948A true CN114290948A (en) | 2022-04-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111674689.2A Pending CN114290948A (en) | 2021-12-31 | 2021-12-31 | Locking device and battery replacement system |
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| CN (1) | CN114290948A (en) |
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| CN214411671U (en) * | 2021-04-08 | 2021-10-15 | 仝达产品开发(惠州)有限公司 | Charging gun lock and charging gun |
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| JP2015104971A (en) * | 2013-11-29 | 2015-06-08 | 株式会社ユーシン | Electric steering lock device |
| CN104113243A (en) * | 2014-06-30 | 2014-10-22 | 北京航天发射技术研究所 | Judgment control system for self-adaptive stretching and retracting in-place of electric telescoping mechanism |
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