CN-115742719-B - Power quick-changing device and power quick-changing method for underground electric vehicle of coal mine

CN115742719BCN 115742719 BCN115742719 BCN 115742719BCN-115742719-B

Abstract

The invention belongs to the technical field of mine electric vehicles, and provides a power supply quick-change device and a power supply quick-change method for an electric vehicle under a coal mine, wherein the power supply quick-change device comprises a battery quick-change mechanism, a whole vehicle moving and positioning module, a vehicle body posture sensor and a controller, a quick-change base and a quick-change battery rack are detachably connected, the positioning structure of the quick-change base is used for positioning the quick-change battery rack when the quick-change base is connected with the quick-change battery rack, the locking structure of the quick-change base is used for locking the quick-change battery rack when the quick-change base is connected with the quick-change battery rack, the whole vehicle moving positioning module is used for detecting the position of the underground coal mine electric vehicle, and the vehicle body attitude sensor is used for detecting the ground gradient of the underground coal mine electric vehicle. The invention has the characteristics of flexible operation, simple structure and the like, can realize the on-site quick replacement of the electric vehicle battery in the coal mine well only by using the simple hoisting tool in the well and the forklift equipment, and meets the continuous underground operation requirement of the electric explosion-proof rubber-tyred vehicle in the coal mine.

Inventors

ZHANG FAN
WANG ZHIWEI
WANG SUHUI
LIANG YUFANG
ZHAO YUAN
HAO ZHIJUN
LIU YURONG
WEI JIANLONG
YANG ZHILONG
HAN FEI
LIU DENING
LING JIANBIN

Assignees

中国煤炭科工集团太原研究院有限公司
山西天地煤机装备有限公司

Dates

Publication Date: 20260512
Application Date: 20221219

Claims (7)

1. The quick-change device for the electric vehicle power supply under the coal mine is characterized by comprising a battery quick-change mechanism, a whole vehicle moving and positioning module, a vehicle body posture sensor and a controller, wherein the battery quick-change mechanism comprises a quick-change base and a quick-change battery rack, the quick-change base is arranged on a vehicle frame of the electric vehicle under the coal mine, the quick-change battery rack is used for placing a battery or a battery pack, the quick-change base and the quick-change battery rack are detachably connected, the quick-change base comprises a positioning structure and a locking structure, the positioning structure is used for positioning the quick-change battery rack when the quick-change base and the quick-change battery rack are connected, the locking structure is used for locking the quick-change battery rack when the quick-change base and the quick-change battery rack are connected, the whole vehicle moving and positioning module is used for being arranged on a vehicle body of the electric vehicle under the coal mine, the whole vehicle moving and positioning module is used for detecting the position of the electric vehicle under the coal mine, the vehicle body posture sensor is used for being arranged on the vehicle frame of the electric vehicle under the coal mine, the vehicle posture sensor is used for detecting the position of the electric vehicle under the coal mine, and the vehicle body posture sensor is connected with the ground, and the gradient sensor is used for controlling the gradient sensor and is connected with the vehicle; The locking structure is a locking oil cylinder assembly, the locking oil cylinder assembly comprises an oil cylinder seat, a locking oil cylinder, a bearing limiting block, an oil cylinder distance sensor, a sensor sensing plate and a bolt, wherein the oil cylinder distance sensor is electrically connected with the controller, the oil cylinder seat, the oil cylinder distance sensor and the bearing limiting block are all arranged on the quick-change base, a cylinder body of the locking oil cylinder is hinged with the oil cylinder seat, a telescopic end of the locking oil cylinder is hinged with one end of the bolt, the bolt is positioned in a through hole of the bearing limiting block, the other end of the bolt is used for extending into the quick-change battery frame, the sensor sensing plate is positioned at the hinged position of the telescopic end of the locking oil cylinder and the bolt, and the oil cylinder distance sensor is positioned between the oil cylinder seat and the sensor sensing plate.
2. The electric vehicle power supply quick-change device in the coal mine well according to claim 1, wherein the quick-change base comprises a base framework, frame fixing seats, frame fixing plates and buffer pads, the positioning structure and the locking structure are arranged on the base framework, two frame fixing seats are respectively arranged on two sides of the base framework, each frame fixing seat is connected with one frame fixing plate, each frame fixing plate is respectively connected with a frame, a diagonal supporting beam is further arranged between each frame fixing seat and the base framework, and a plurality of buffer pads are arranged on the base framework.
3. The electric vehicle power supply quick-change device in the coal mine well is characterized in that the positioning structure comprises a plurality of locking pin shafts and limiting blocks, the locking pin shafts are used for extending into the quick-change battery rack, the number of the limiting blocks is at least two, the limiting blocks are located on the outer side of the locking structure and used for limiting the position of the quick-change battery rack, a base distance sensor is arranged on the base framework and is electrically connected with the controller, and the base distance sensor is used for detecting the distance between the quick-change battery rack and the base framework.
4. The electric vehicle power supply quick-change device in the coal mine well is characterized in that four locking structures are arranged, two locking structures are arranged near one end of the quick-change base, the other two locking structures are arranged near the other end of the quick-change base, and the locking cylinders of the two locking structures near the same end of the quick-change base are arranged in opposite directions when being extended.
5. The quick-change device for the electric vehicle power supply under the coal mine is characterized in that the quick-change battery rack comprises an upper hanging frame and a lower framework, the upper hanging frame is connected with the lower framework, two layers of bearing beams are arranged at the bottom of the lower framework, a battery fixing seat is arranged on the bearing beams on the upper layer and used for placing batteries or battery packs, a locking cylinder backing plate is arranged on the bearing beams on the lower layer, and a forklift guide plate is arranged between the two layers of bearing beams.
6. The rapid power change device for an electric vehicle in a coal mine well of claim 1, further comprising a low-voltage standby power module arranged on the frame, wherein the low-voltage standby power module is used for supplying power to the rapid power change device for the electric vehicle in the coal mine well.
7. A power supply quick-change method adopting the coal mine underground electric vehicle power supply quick-change device as claimed in any one of claims 1 to 6, which is characterized by comprising the following steps: s1, when the electric quantity of a vehicle is insufficient, a driver sends out a power-changing demand instruction after parking, a vehicle-mounted mobile positioning module detects the position of the vehicle, a vehicle body posture sensor detects the ground gradient of the vehicle, and when the position of the vehicle is in a non-high-risk environment and the ground gradient is less than 5 degrees, power changing is allowed; s2, selecting a power conversion mode of a top crane or a fork according to the placement position of the standby battery or the battery pack and the environmental equipment condition; s3, the locking oil cylinders are retracted, and when the distance sensors of the oil cylinders detect that the locking oil cylinders are fully retracted, the next operation is carried out; S4, carrying out top hanging or fork mounting on the old battery or battery pack and the quick-change battery rack along the direction vertical to the surface of the frame, horizontally moving the old battery or battery pack and the quick-change battery rack after exceeding the height of the locking pin shaft, and placing the old battery or battery pack and the quick-change battery rack on one side of the vehicle body; s5, placing the standby battery or the battery pack on the quick-change base from the other side of the vehicle body through secondary positioning according to the same track; S6, when the base distance sensor senses that the battery quick-change frame falls down completely and the locking bolt is inserted, the locking oil cylinder stretches out to press the battery quick-change frame, and the battery quick-change frame is completely electrified.

Description

Power quick-changing device and power quick-changing method for underground electric vehicle of coal mine Technical Field The invention relates to the technical field of mine electric vehicles, in particular to a power supply quick-changing device and a power supply quick-changing method for an underground electric vehicle of a coal mine. Background The underground explosion-proof trackless rubber-tyred vehicle for the coal mine has the advantages of flexible maneuvering operation and high transportation efficiency, and is widely applied to various mining areas in China. With the development of electric automobile technology and the improvement of the requirements of underground coal mine on energy conservation and emission reduction, various novel pure electric explosion-proof trackless rubber-tyred vehicles taking explosion-proof storage batteries as power sources are generated, and the traditional diesel explosion-proof trackless rubber-tyred vehicles are gradually replaced by virtue of the characteristics of low noise and zero pollution. But is limited by the requirements of mine safety regulations and the development of chemical battery technology, the electric explosion-proof trackless rubber-tyred vehicle needs explosion-proof treatment by using electric components such as a motor, a storage battery and the like, and the dead weight of the components subjected to the explosion-proof treatment is greatly improved, so that the specific energy of the explosion-proof storage battery is lower, and the endurance mileage of the vehicle is seriously insufficient, so that the vehicle needs frequent lifting and charging, the working efficiency of the electric explosion-proof rubber-tyred vehicle is seriously restricted, and the underground continuous operation requirement can not be completely met; Therefore, under the condition that the short-term breakthrough of the existing chemical battery technology cannot be achieved, the development of the vehicle battery quick-change technology has a certain necessity, the existing traditional ground battery quick-change station has a preliminary scale, but the battery quick-change mechanism adopted by the ground is complex, a special battery quick-change station needs to be built and matched with special large-scale precise automatic hoisting equipment, meanwhile, the vehicle body also needs to be provided with a precise complex battery locking mechanism, the requirements are difficult to realize under the complex and severe conditions of the coal mine, the distance between the vehicle battery quick-change station and the underground coal mine is long, and the time for lifting and changing the battery is long, so the development of the underground quick-change technology of the coal mine electric vehicle battery has a certain necessity. Disclosure of Invention The invention aims to provide a quick power supply replacement device and a quick power supply replacement method for an electric vehicle in a coal mine, which are used for solving the problems in the prior art, and the on-site quick replacement of the electric vehicle battery in the coal mine can be realized only by a simple underground hoisting tool and forklift equipment, so that the continuous underground operation requirement of the electric explosion-proof rubber-tyred vehicle in the coal mine is met. In order to achieve the above object, the present invention provides the following solutions: The invention provides a quick-change device for a power supply of an electric vehicle under a coal mine, which comprises a battery quick-change mechanism, a whole vehicle mobile positioning module, a vehicle body attitude sensor and a controller, wherein the battery quick-change mechanism comprises a quick-change base and a quick-change battery frame, the quick-change base is arranged on a vehicle frame of the electric vehicle under the coal mine, the quick-change battery frame is used for placing a battery or a battery pack, the quick-change base and the quick-change battery frame are detachably connected, the quick-change base comprises a positioning structure and a locking structure, the positioning structure is used for positioning the quick-change battery frame when the quick-change base and the quick-change battery frame are connected, the locking structure is used for locking the quick-change battery frame when the quick-change base and the quick-change battery frame are connected, the whole vehicle mobile positioning module is used for being arranged on a vehicle body of the electric vehicle under the coal mine, the vehicle body attitude sensor is used for detecting the position of the electric vehicle under the coal mine, the vehicle body attitude sensor is arranged on the vehicle frame of the electric vehicle under the coal mine, the vehicle attitude sensor is used for detecting the position of the electric vehicle under the coal mine, and the vehicle body attitude sensor is connected with the ground, and