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CN-224197598-U - Non-contact wireless charging equipment and electric forklift

CN224197598UCN 224197598 UCN224197598 UCN 224197598UCN-224197598-U

Abstract

The application discloses an electric forklift, which comprises a wireless energy receiving module arranged on a forklift body of the electric forklift and comprises a wireless energy receiving device and a wireless energy receiving controller, wherein the wireless energy receiving controller is configured to convert energy induced by the wireless energy receiving device when the wireless energy receiving device is aligned with a paired wireless energy emitting device into direct current output so as to selectively charge a power battery of the electric forklift, and the electric forklift is characterized in that the wireless energy receiving device comprises a wireless receiving coil, the wireless receiving coil is arranged on a first mounting substrate, the first mounting substrate is mounted on a roof guard and/or a bottom surface of the forklift body, and a warning device is arranged in a cockpit of the electric forklift and is configured to emit a warning signal allowing wireless charging when the wireless energy receiving device is aligned with the paired wireless energy emitting device. The application also discloses non-contact wireless charging equipment for the electric forklift.

Inventors

  • LIANG RONGHONG
  • YU DONGLIANG

Assignees

  • 海斯特美科斯叉车(浙江)有限公司

Dates

Publication Date
20260505
Application Date
20250306

Claims (14)

  1. 1. An electric fork-lift truck (100) comprising a wireless energy receiving module (002) arranged on a truck body (110) of the electric fork-lift truck (100), the wireless energy receiving module (002) comprising a wireless energy receiving device (105) and a wireless energy receiving controller (102), the wireless energy receiving controller (102) being configured to convert energy induced by the wireless energy receiving device (105) when the wireless energy receiving device (105) is aligned with a mating wireless energy emitting device (104) into a direct current output for selectively charging a power battery (103) of the electric fork-lift truck (100), characterized in that the wireless energy receiving device (105) comprises a wireless receiving coil, and the wireless receiving coil is arranged on a first mounting substrate mounted on a ceiling (114) and/or a bottom surface of the truck body (110), and in that an alerting device is arranged in the cockpit of the electric fork-lift truck (100) and configured to emit a wireless alerting signal allowing the wireless energy emitting device (104) when the wireless energy receiving device (105) is mated with the mating wireless energy emitting device.
  2. 2. The electric fork-lift truck (100) of claim 1, wherein the first mounting substrate of the wireless energy receiving device (105) is mounted on a side of the vehicle body (110).
  3. 3. The electric fork lift truck (100) of claim 1 or 2, wherein the wireless energy transmitting device (104) comprises a wireless transmitting coil and the wireless transmitting coil is arranged on a fixed second mounting substrate, a photoelectric sensor is mounted on one of the second mounting substrate of the wireless energy transmitting device (104) and the first mounting substrate of the wireless energy receiving device (105), and an optical device capable of reflecting or transmitting light detectable by the photoelectric sensor is mounted on the other of the second mounting substrate of the wireless energy transmitting device (104) and the first mounting substrate of the wireless energy receiving device (105), the photoelectric sensor being capable of detecting light reflected or emitted by the optical device to activate the warning device to generate a warning signal when the second mounting substrate of the wireless energy transmitting device (104) and the first mounting substrate of the wireless energy receiving device (105) are aligned with each other.
  4. 4. The electric fork lift truck (100) of claim 3 wherein the photoelectric sensor is at least two spaced apart photoelectric sensors and the optics are at least two spaced apart optics.
  5. 5. The electric fork lift truck (100) of claim 4 wherein the warning device includes the same number of indicator lights as the photosensors, the indicator lights being activated to illuminate when the photosensors detect light.
  6. 6. The electric fork-lift truck (100) of claim 5, wherein the wireless energy receiving controller (102) is provided with an auxiliary power interface (109) to generate power to a battery management system (106) of the power battery (103) prior to a dc power output to the power battery (103).
  7. 7. The electric fork-lift truck (100) of claim 6, wherein the wireless energy receiving controller (102) is configured to wake up the battery management system (106) periodically after the power battery (103) of the electric fork-lift truck (100) has been fully charged, such that the battery management system (106) automatically detects the current charge of the power battery (103) after waking up and selectively sends an instruction requesting charging to the wireless energy receiving controller (102) based on the detection result of the current charge, or the battery management system (106) can be woken up using the key switch (117) of the electric fork-lift truck (100).
  8. 8. A contactless wireless charging device for an electric fork-lift truck (100), comprising: A wireless energy transmission module (001) fixedly mounted relative to the ground, the wireless energy transmission module (001) comprising a wireless energy transmission device (104), and A wireless energy receiving module (002) mounted on a vehicle body (110) of an electric forklift (100), the wireless energy receiving module (002) comprising a wireless energy receiving device (105) and a wireless energy receiving controller (102), the wireless energy receiving controller (102) being configured to convert energy induced by the wireless energy receiving device (105) when the wireless energy receiving device (105) is aligned with the wireless energy emitting device (104) into a direct current output to selectively charge a power battery (103) of the electric forklift (100), characterized in that the wireless energy receiving device (105) comprises a wireless receiving coil, and the wireless receiving coil is arranged on a first mounting substrate mounted on a roof rack (114) and/or a floor of the vehicle body (110), and the contactless wireless charging apparatus further comprises an alert device provided in a cockpit of the electric forklift (100) configured to wirelessly alert the wireless energy emitting device (104) when the wireless energy receiving device (105) is paired with the wireless energy emitting device.
  9. 9. The contactless wireless charging apparatus according to claim 8, wherein the first mounting substrate of the wireless energy receiving device (105) is mounted on a side surface of the vehicle body (110).
  10. 10. The contactless wireless charging device according to claim 8 or 9, wherein the wireless energy transmitting means (104) comprises a wireless transmitting coil, and the wireless transmitting coil is arranged on a fixed second mounting substrate, a photoelectric sensor is mounted on one of the second mounting substrate of the wireless energy transmitting means (104) and the first mounting substrate of the wireless energy receiving means (105), and an optical device capable of reflecting or transmitting light detectable by the photoelectric sensor is mounted on the other of the second mounting substrate of the wireless energy transmitting means (104) and the first mounting substrate of the wireless energy receiving means (105), and when the second mounting substrate of the wireless energy transmitting means (104) and the first mounting substrate of the wireless energy receiving means (105) are aligned with each other, the photoelectric sensor is capable of detecting light reflected or emitted by the optical device to activate the warning means to generate a warning signal.
  11. 11. The contactless wireless charging device of claim 10, wherein the photosensor is at least two spaced apart photosensors and the optic is at least two spaced apart optics.
  12. 12. The contactless wireless charging device of claim 11, wherein the alert means comprises the same number of indicator lights as the photosensor, the indicator lights being activated to illuminate when the photosensor detects light.
  13. 13. The contactless wireless charging device according to claim 12, wherein the wireless energy receiving controller (102) is provided with an auxiliary power interface (109) for generating power supply to a battery management system (106) of the power battery (103) prior to the direct current output to the power battery (103).
  14. 14. The contactless wireless charging device according to claim 13, wherein the wireless energy receiving controller (102) is configured to wake up the battery management system (106) periodically after the power battery (103) of the electric forklift (100) has been fully charged, so that the battery management system (106) automatically detects the current electric quantity of the power battery (103) after waking up, and selectively transmits an instruction requesting charging to the wireless energy receiving controller (102) based on the detection result of the current electric quantity, or the battery management system (106) can be woken up using the key switch (117) of the electric forklift (100).

Description

Non-contact wireless charging equipment and electric forklift Technical Field The present application relates generally to a contactless wireless charging apparatus for an electric forklift and an electric forklift. Background Electric forklifts are used for material handling and are mainly equipped with power cells. The power battery of such an electric forklift is usually supplemented by wired direct current charging, for example, a lithium battery, and the electric forklift may be equipped with a charging input interface for charging the lithium battery, and a discharging output interface for supplying power to other electric appliances at the work site. The prior art adopts the wired direct current charging mainly because the power requirement of the power battery of the electric forklift is larger, so the wired direct current charging is easy to meet the requirement. For example, one or two charging devices may be provided for an electric forklift using a dc charging system. The charging gun of the single charging device can be directly inserted into the charging input interface of the electric forklift to charge the power battery, and additionally, the charging gun of the other charging device can also be inserted into the discharging output interface (which is used for charging at the moment) of the electric forklift to charge the power battery at the same time, so that the charging power is improved and the charging time is shortened. For such wired direct current charging of the prior art, although the charging power is high, the electric fork-lift truck must be parked beside the charging device during charging, and then the charging gun carrying the charging cable is taken off from the charging device and plugged into the corresponding port of the electric fork-lift truck to perform charging. In this process, the charging cable may drag on the bottom surface. Long-term dragging on the bottom surface can also cause the damage of the insulating layer of the sheath of the charging cable, and the risk of electric leakage is caused. In addition, although the existing individual warehouse forklift is equipped with wireless charging equipment, the installation position of the wireless receiving device is usually only located on the side face of the portal, so that the installation area is small, the power of the wireless receiving device is further limited, the charging power is small, and the long-time working requirement cannot be met. Disclosure of utility model In view of the above problems, the present application aims to provide an electric forklift and a non-contact wireless charging device, whereby the electric forklift can rapidly charge its power battery using the non-contact wireless charging device, and a user of the electric forklift can conveniently park the electric forklift at a charging place without paying attention to a charging operation on site, and the power battery can be charged by itself. According to one aspect of the application, there is provided an electric forklift comprising a wireless energy receiving module provided on a body of the electric forklift, the wireless energy receiving module comprising a wireless energy receiving device and a wireless energy receiving controller configured to convert energy induced by the wireless energy receiving device when the wireless energy receiving device is aligned with a paired wireless energy emitting device into a direct current output to selectively charge a power battery of the electric forklift, the wireless energy receiving device comprising a wireless receiving coil and the wireless receiving coil being arranged on a first mounting substrate mounted on a roof guard and/or a floor of the body and an alert device being provided in a cockpit of the electric forklift, the alert device being configured to emit an alert signal allowing wireless charging when the wireless energy receiving device is aligned with the paired wireless energy emitting device. Optionally, the first mounting substrate of the wireless energy receiving device is mounted on a side of the vehicle body. Optionally, the wireless energy emitting device includes a wireless emitting coil, and the wireless emitting coil is disposed on a fixed second mounting substrate, a photoelectric sensor is mounted on one of the second mounting substrate of the wireless energy emitting device and the first mounting substrate of the wireless energy receiving device, and an optical device that reflects or emits light detectable by the photoelectric sensor is mounted on the other of the second mounting substrate of the wireless energy emitting device and the first mounting substrate of the wireless energy receiving device, and when the second mounting substrate of the wireless energy emitting device and the first mounting substrate of the wireless energy receiving device are aligned with each other, the photoelectric sensor is able to detect light reflected or emitted by the optical