Snow thrower and power tool
A power tool includes a handle assembly, a power supply, and a temperature control module; where the handle assembly includes a left grip and a right grip, where a first end of the left grip is coupled to a body of the power tool, a second end of the left grip is coupled to a first end of the right grip, and a second end of the right grip is coupled to the body of the power tool; the temperature control module is coupled to the handle assembly and the power supply separately; and the power supply is configured to power the temperature control module so that the temperature control module is configured to heat the handle assembly.
1 . A snow thrower, comprising a handle system, the handle system comprising a handle assembly and a temperature control module;
wherein the handle assembly comprises a grip and a temperature switch, the temperature control module is configured to heat the grip, the temperature switch is disposed on a heating path from the temperature control module to the grip, the temperature switch is in an off state when a temperature of the grip is higher than a first threshold, and the temperature switch is in an on state when the temperature of the grip is lower than a second threshold;
wherein the handle system comprises a signal collection module capable of sending a working signal to the temperature control module and a temperature detection module configured to collect the temperature of the grip and send the temperature of the grip to the signal collection module; and
wherein the signal collection module is configured to determine, based on a stored preset correspondence, a pulse-width modulation (PWM) signal corresponding to the temperature of the grip and send the PWM signal to the temperature control module, the preset correspondence comprises at least one correspondence between the temperature and the PWM signal, and the temperature control module is further configured to heat the grip based on the PWM signal.
2 . The snow thrower according to claim 1 , wherein the handle system further comprises a handle heating switch, the handle heating switch is configured to enable and disable a handle heating function, the signal collection module is coupled to the handle heating switch and the temperature control module separately, the signal collection module is configured to collect an operation signal of the handle heating switch and send a working signal to the temperature control module when the operation signal is a function enabling signal, and the temperature control module is configured to heat the grip based on the working signal.
3 . The snow thrower according to claim 2 , wherein the working signal comprises a first output signal for indicating that heating is performed with a first output parameter.
4 . The snow thrower according to claim 3 , wherein the the temperature detection module is coupled to the grip and the signal collection module separately, the temperature detection module is configured to collect the temperature of the grip and send the temperature of the grip to the signal collection module, the signal collection module is further configured to adjust the first output signal to a second output signal when the temperature of the grip reaches a preset temperature, the second output signal is used for indicating that the heating is performed with a second output parameter, and the first output parameter is greater than the second output parameter.
5 . The snow thrower according to claim 2 , wherein the temperature detection module is coupled to the grip and the signal collection module separately, the signal collection module is further configured to send a third output signal to the temperature control module based on the temperature of the grip, wherein the third output signal is used for indicating that heating is performed with a third output parameter, and the temperature control module is further configured to heat the grip based on the third output signal.
6 . The snow thrower according to claim 1 , wherein the temperature detection module is coupled to the grip and the temperature control module separately, the temperature detection module is configured to collect the temperature of the grip and output a voltage based on the temperature of the grip, and the temperature control module is configured to determine a fourth output parameter based on the voltage and heat the grip with the fourth output parameter.
7 . The snow thrower according to claim 2 , wherein the signal collection module is further configured to send a working stopping signal to the temperature control module when the operation signal is a function disabling signal, and the temperature control module is further configured to stop heating the grip when the working stopping signal is received.
8 . The snow thrower according to claim 1 , wherein the handle system further comprises a controller, the controller is configured to stop an output of a power supply when no operation signal from another circuit is received within a preset period so that the temperature control module stops heating the grip.
9 . The snow thrower according to claim 1 , wherein a first resistance wire is wound in the grip, and the temperature control module is configured to heat the grip by outputting a current to the first resistance wire.
10 . The snow thrower according to claim 9 , wherein a second resistance wire and a third resistance wire are wound in the grip, a first end of the second resistance wire and a first end of the third resistance wire are coupled to the temperature switch separately, and a second end of the second resistance wire and a second end of the third resistance wire are coupled to the temperature control module separately, and the temperature control module, the second resistance wire, the temperature switch, and the third resistance wire form a closed loop.
11 . The snow thrower according to claim 1 , wherein a heated region of the grip exhibits a first color when the temperature of the grip is lower than a third threshold, and the heated region of the grip exhibits a second color when the temperature of the grip is higher than the third threshold.
12 . The snow thrower according to claim 11 , wherein a heated region of the grip exhibits a third color when the temperature of the grip is lower than a fourth threshold, the heated region of the grip exhibits a fourth color when the temperature of the grip is higher than the fourth threshold and lower than a fifth threshold, and the heated region of the grip exhibits a fifth color when the temperature of the grip is higher than the fifth threshold.
13 . The snow thrower according to claim 1 , further comprising a motor and a battery pack electrically connected to the motor to power the motor, wherein the battery pack is further configured to power the temperature control module.
14 . The snow thrower according to claim 1 , wherein the grip comprises a left grip and a right grip, the temperature switch comprises a first temperature switch and a second temperature switch, a temperature control module is configured to heat the left grip and the right grip, the first temperature switch is disposed on a heating path from the temperature control module to the left grip, the first temperature switch is configured to be in an off state when a temperature of the left grip is higher than a first threshold, and the first temperature switch is configured to be in an on state when the temperature of the left grip is lower than a second threshold, the second temperature switch is disposed on a heating path from the temperature control module to the right grip, the second temperature switch is configured to be in the off state when a temperature of the right grip is higher than the first threshold, and the second temperature switch is configured to be in the on state when the temperature of the right grip is lower than the second threshold.
15 . A power tool, comprising a handle assembly, a power supply, and a temperature control module;
wherein the handle assembly comprises a left grip and a right grip, a first end of the left grip is coupled to a body of the power tool, a second end of the left grip is coupled to the right grip, a second end of the right grip is coupled to the body of the power tool, the temperature control module is coupled to the handle assembly and the power supply separately, and the power supply is configured to power the temperature control module so that the temperature control module is configured to heat the handle assembly; and
wherein the handle assembly comprises a signal collection module capable of sending a working signal to the temperature control module and a temperature detection module configured to collect the temperature of at least one of the left grip or the right grip and send the collected temperature to the signal collection module, the temperature detection module includes a negative temperature coefficient (NTC) temperature detection module.
16 . The power tool according to claim 15 , wherein the handle assembly further comprises a first temperature switch and a second temperature switch, the first temperature switch is disposed on a heating path from the temperature control module to the left grip, the first temperature switch is configured to be in an off state when a temperature of the left grip is higher than a first threshold, and the first temperature switch is configured to be in an on state when the temperature of the left grip is lower than a second threshold, and the second temperature switch is disposed on a heating path from the temperature control module to the right grip, the second temperature switch is configured to be in the off state when a temperature of the right grip is higher than the first threshold, and the second temperature switch is configured to be in the on state when the temperature of the right grip is lower than the second threshold.
17 . The power tool according to claim 15 , wherein a first resistance wire is wound in the left grip, the temperature control module is configured to heat the left grip by outputting a current to the first resistance wire, and a second resistance wire is wound in the right grip, and the temperature control module is configured to heat the right grip by outputting a current to the second resistance wire.
18 . The power tool according to claim 17 , wherein a third resistance wire is wound in the handle assembly and passes through the left grip and the right grip.
19 . The snow thrower according to claim 1 , wherein the temperature detection module includes a negative temperature coefficient (NTC) temperature detection module.