CN214043771U

CN214043771U - Battery and hairdryer

Info

Publication number: CN214043771U
Application number: CN202022198855.3U
Authority: CN
Inventors: 李杰淳; 何志江; 梁国源
Original assignee: Shenzhen Fengling Electronic Co ltd
Current assignee: Shenzhen Fengling Electronic Co ltd
Priority date: 2020-09-29
Filing date: 2020-09-29
Publication date: 2021-08-24
Anticipated expiration: 2030-09-29

Abstract

The utility model provides a battery and hair drier, the battery includes battery body and auxiliary cooling fin, be provided with anodal limit and negative pole limit on the battery body, be connected with anodal conducting part on the anodal limit, be connected with negative pole conducting part on the negative pole limit; the auxiliary radiating fin comprises a connecting section and a radiating section, the connecting section is fixedly connected with the positive pole and/or the negative pole, the radiating section is bent relative to the connecting section, and the radiating section is spaced from the battery body by a preset distance; the auxiliary radiating fins comprise first auxiliary radiating fins, and the negative pole points are fixedly connected with the first auxiliary radiating fins; and/or the auxiliary radiating fins comprise second auxiliary radiating fins, and the anode point is fixedly connected with the second auxiliary radiating fins; the battery and the electric hair drier have good heat dissipation effect and high comfort level in use.

Description

Battery and hairdryer

Technical Field

The utility model relates to the field of household appliances, in particular to battery and hairdryer.

Background

The electric hair drier is a common electric appliance in daily life of people, is often used in various fields such as hair care, laboratories, physical therapy rooms, industrial production, art designing and the like, and is mainly applied to drying and shaping hair. At present, common hairdryer in the market is generally connected the commercial power through the power cord and is directly supplied power to the hairdryer, and it is time-consuming to often have the power cord winding to untie in the use, accomodates the arduous, and the self-blowing is not convenient, must use the scheduling problem in fixed area for a long time, experiences and feels relatively poor. Especially in some special occasions, the inconvenience brought to users by the power line is more obvious. Such as: barber shop, barber master need receive the line puzzlement at the during operation, have not only reduced work efficiency, still can bring not good experience for the customer. In addition, the multiple hair dryers can be used simultaneously, the possibility of winding can be caused, and the longer the power cord is, the greater the electric energy loss on the cord is; in special occasions such as outdoors, traveling, swimming pools, students' dormitories and the like, the use of the wired electric hair dryer is limited due to the existence and position of the power socket.

Based on this, people's utility model a can use the hairdryer of battery powered, has got rid of the restriction of power cord to application range. When the hair drier works, the lithium battery generates heat when discharging, and the lithium battery can be damaged when the temperature reaches a certain degree; the lithium battery generates heat in the discharging process, namely, the heat is generated from the inside of the battery and then is conducted to the surface of the battery; the blowing operation is stopped along with the electricity consumption of the battery, and considerable heat is still present in the battery and can be slowly emitted after the battery is stopped; the surface temperature of the blowing handle can continuously rise after the machine is stopped, and poor use experience is brought to a user.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide a battery and a hair dryer which have good heat dissipation and comfortable use.

The embodiment of the utility model provides a battery, including battery body and auxiliary cooling fin, be provided with positive pole limit and negative pole limit on the battery body; the auxiliary radiating fin comprises a connecting section and a radiating section, the connecting section is fixedly connected with the positive pole and/or the negative pole, and the radiating section is bent relative to the connecting section;

the auxiliary radiating fins comprise first auxiliary radiating fins, and the negative pole points are fixedly connected with the first auxiliary radiating fins; and/or the presence of a gas in the gas,

the auxiliary radiating fins comprise second auxiliary radiating fins, and the positive pole point is fixedly connected with the second auxiliary radiating fins.

Preferably, the positive pole is connected with a positive conducting piece, and the negative pole is connected with a negative conducting piece.

Preferably, the positive electrode lead-through extends in a radial direction of the battery body, and a free end of the positive electrode lead-through protrudes out of an edge of the battery body; the negative conducting piece also extends along the radial direction of the battery body, and the free end of the negative conducting piece also protrudes out of the edge of the battery body; the extending directions of the positive electrode conducting piece and the negative electrode conducting piece are the same.

Preferably, the auxiliary heat dissipation fins are arranged in a 7 shape, only the negative pole point is fixedly connected with the first auxiliary heat dissipation fin, the first auxiliary heat dissipation fin and the positive pole conduction piece are separated by a preset distance, and the heat dissipation section is separated by a preset distance from the battery body.

The utility model also provides an electric hair drier, which comprises a shell, a fan and any one of the above batteries, wherein the fan is arranged inside the shell, the shell is provided with an air inlet and an air outlet, and an air blowing duct positioned in the shell is formed between the air inlet and the air outlet; a battery accommodating groove for accommodating the battery is formed in the shell, and a heat dissipation air duct is arranged at the periphery of the battery accommodating groove; the heat dissipation air channel is communicated with the blowing air channel.

Preferably, the housing includes a handle portion, and the battery accommodating groove is provided on the handle portion; the battery holder that is used for fixing a position the battery is arranged in the battery containing groove, the battery with the inner wall of the shell body is not contacted, and the bottom of the handle part is provided with a heat dissipation air duct air inlet communicated with the battery containing groove.

Preferably, a negative pressure area is formed near the fan, and an air outlet of the heat dissipation air duct is communicated with the negative pressure area of the blowing air duct.

Preferably, the electric hair drier further comprises a control circuit board, the positive pole is connected with a positive conducting piece, the negative pole is connected with a negative conducting piece, and the positive conducting piece and the negative conducting piece are both electrically connected with the control circuit board; the heat dissipation section is close to the heat dissipation air duct.

Preferably, the control circuit board is provided with a heat conducting member for assisting heat dissipation;

the heat conducting piece comprises a metal core and a silica gel shell, and the metal core is coated by the silica gel shell; alternatively, the first and second electrodes may be,

the heat conducting piece is a copper foil.

Preferably, the electric hair drier further comprises a heating device and a temperature sensor, the heating device is arranged inside the shell, the fan, the heating device and the temperature sensor are all electrically connected with the control circuit board, and the temperature sensor is used for detecting the ambient temperature; when the electric blowing is started, if the measured temperature of the temperature sensor is lower than or equal to a first set temperature, the control circuit board controls the fan and the heating device to operate according to a first mode; if the temperature measured by the temperature sensor is higher than a second set temperature which is equal to or higher than the first set temperature, the control circuit board controls the fan and the heating device to operate according to a second mode; the wind speed in the first mode is lower than the wind speed in the second mode, and the wind temperature in the first mode is higher than the wind temperature in the second mode.

The utility model discloses a battery is provided with auxiliary cooling fin, and auxiliary cooling fin can effectively conduct out the inside heat of battery, and auxiliary cooling fin is close to the heat dissipation wind channel of hairdryer, can take away the heat of battery, and the radiating effect is good, avoids the hairdryer excessively to generate heat, uses more comfortablely.

Drawings

The foregoing and other objects, features and advantages of the invention will be apparent from the following more particular description of preferred embodiments of the invention, as illustrated in the accompanying drawings. Like reference numerals refer to like parts throughout the drawings, and the drawings are not intended to be drawn to scale in actual dimensions, emphasis instead being placed upon illustrating the principles of the invention.

FIG. 1 is a side view of the hair dryer of the preferred embodiment of the present invention;

FIG. 2 is a cross-sectional view taken along direction AA in FIG. 1;

FIG. 3 is a cross-sectional view taken along direction BB in FIG. 1;

FIG. 4 is a cross-sectional view taken along the direction CC in FIG. 1;

FIG. 5 is an exploded view of the hair dryer in accordance with the preferred embodiment of the present invention;

fig. 6 is a front view of a battery according to a preferred embodiment of the present invention;

fig. 7 is a side view of a battery according to a preferred embodiment of the present invention;

fig. 8 is a sectional view of a hair dryer according to another preferred embodiment of the present invention.

Detailed Description

To facilitate an understanding of the present invention, the present invention will now be described more fully with reference to the accompanying drawings.

It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element and be integral therewith, or intervening elements may also be present. The terms "mounted," "one end," "the other end," and the like are used herein for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

As shown in fig. 6 and 7, an embodiment of the present invention provides a battery, which includes a battery body and an auxiliary heat sink 52, wherein the battery body is provided with a positive pole and a negative pole. The auxiliary cooling fin 52 comprises a connecting section 521 and a cooling section 522, the connecting section 521 is fixedly connected with the cooling section 522, the connecting section 521 is fixedly connected with a positive pole and/or a negative pole, and the cooling section 522 is bent relative to the connecting section 521, so that air flow can pass through the inner side of the cooling section, and the cooling area can be larger. The auxiliary heat sink 52 includes a first auxiliary heat sink, and the negative electrode point is fixedly connected to the first auxiliary heat sink, where the fixed connection includes a direct fixed connection and an indirect fixed connection; and/or, the auxiliary heat sink 52 includes a second auxiliary heat sink, and the positive electrode is fixedly connected to the second auxiliary heat sink, and similarly, the fixed connection here includes a direct fixed connection and an indirect fixed connection, for example, the auxiliary heat sink 52 is fixedly connected to the positive electrode through a tab. When the battery is used, the heat dissipation section 522 of the auxiliary heat dissipation fin 52 extends to the outside, and the heat dissipation speed of the battery is enhanced by utilizing the characteristic of good heat conduction of the battery pole piece metal. The battery effectively avoids the condition that the temperature of the battery exceeds a dangerous value, has good safety, and can prolong the service life of the battery.

It should be noted that the positive pole and the negative pole are commonly referred to as a positive pole and a negative pole, and the positive conducting piece 54 and the negative conducting piece 53 are extended from the positive pole and the negative pole for convenience of connection.

In a preferred embodiment, the positive pole is connected with a positive conducting piece, and the negative pole is connected with a negative conducting piece.

In a preferred embodiment, the positive electrode lead-through 54 extends in a radial direction of the battery body, and a free end of the positive electrode lead-through 54 protrudes from an edge of the battery body. The negative electrode lead 53 also extends in the radial direction of the battery body, and the free end of the negative electrode lead 53 also protrudes from the edge of the battery body. The battery is conveniently connected with an external circuit board.

In a preferred embodiment, the positive and negative

electrode conduction members

54 and 53 extend in the same direction. In general, the circuit board is flat, and the positive electrode conductive member 54 and the negative electrode conductive member 53 extend in the same direction to be more conveniently connected to the circuit board.

In a preferred embodiment, the auxiliary heat sink 52 is disposed in a shape of "7", only the negative electrode is fixedly connected to the first auxiliary heat sink, the first auxiliary heat sink is spaced from the positive conductive member by a predetermined distance, and the heat dissipating section 522 is spaced from the battery body by a predetermined distance. The heat dissipation section 522 of the first auxiliary heat sink is far away from the positive conducting piece, so that a certain distance is reserved between the heat dissipation section 522 and the circuit board, and the heat dissipation effect is improved. The extended auxiliary heat sink 52 preferably extends from the negative terminal of the battery, i.e., the auxiliary heat sink 52 is connected to the negative terminal conducting member or the negative terminal pole. The battery circumferential metal shell is negative, and the auxiliary cooling fins 52 led out from the negative do not generate the risk of short circuit even if the battery pole piece contacts the battery circumferential metal shell. If the auxiliary heat sink 52 of the positive lead comes into contact with the metal case of the battery, a short circuit is caused.

As shown in fig. 1-8, the utility model also provides a hair dryer, including casing 1, fan 3 and the battery 5 of any one of the above-mentioned, fan 3 sets up in the inside of casing 1, is provided with air intake 11 and air outlet 12 on casing 1. An air blowing duct positioned in the shell is formed between the air inlet 11 and the air outlet 12; a battery accommodating groove 50 for accommodating a battery is arranged in the shell 1, and a heat dissipation air duct 51 is arranged at the periphery of the battery accommodating groove 50; the heat dissipation air duct 51 is communicated with the blowing air duct.

In a preferred embodiment, the hair dryer further comprises a heating device 13, a temperature sensor (not shown), a control key 8 and a control circuit board 2, wherein the fan 3, the heating device 13 and the control circuit board 2 are all arranged inside the shell 1, and the control key 8 is arranged on the shell 1. Fan 3 and heating device 13 all with control circuit board 2 electric connection, temperature sensor also with control circuit board 2 electric connection, temperature sensor surveys ambient temperature and battery temperature to give control circuit board 2 with the ambient temperature who detects, control circuit board 2 is according to ambient temperature's data and the operating condition of the program control fan 3 that has set for and heating device 13. An air inlet 11 and an air outlet 12 are arranged on the housing 1, and outside air enters the housing 1 from the air inlet 11, is heated by a heating device 13 (or the heating device 13 does not work), and is blown out from the air outlet 12. After the electric hair drier is started, if the measured temperature of the temperature sensor is lower than a first set temperature, the control circuit board 2 controls the fan 3 and the heating device 13 to operate according to a first mode; if the temperature measured by the temperature sensor is higher than a second set temperature which is equal to or higher than the first set temperature, the control circuit board 2 controls the fan 3 and the heating device 13 to operate according to a second mode; the wind speed in the first mode is lower than the wind speed in the second mode, and the wind temperature in the first mode is higher than the wind temperature in the second mode. The first mode of operation is typically used when the ambient temperature is low, such as in winter; the second mode of operation is typically used when the ambient temperature is high, such as in summer. Furthermore, a filter screen 110 is disposed at the air inlet 11, and the filter screen 110 is fixed on the housing 1. Further, the fan 3 is a direct-current low-voltage fan, and the rated voltage of the fan 3 is 6-36V. In this embodiment, the fan can be started by the control key 8, and certainly, the fan can be started by other methods such as voice or touch.

Referring to fig. 8, in the preferred embodiment, the positive pole is connected with a positive conducting piece, the negative pole is connected with a negative conducting piece, and the positive conducting piece 54 and the negative conducting piece 53 are both electrically connected with the control circuit board 2; the heat dissipating section 522 is disposed adjacent to the heat dissipating air duct 50. In the working process of blowing, the heat emitted by the battery 5 is taken away in time and sent to the blowing air channel, the heat generated by the battery is fully utilized, the heat is recovered, and the energy is saved. The heat that in time gives off the battery in the working process of blowing is taken away, and the handle can not have lasting temperature rise after hairdryer stop work, and the radiating effect is good, prolongs the life of battery, and avoids the hair dryer handle overheated for the discomfort that the user brought.

Referring to fig. 1 and 5, in a preferred embodiment, the fan 3 is a centrifugal fan 3, the air outlet 12 is located on the front side of the hair dryer, the air inlet 11 is located on the left and/or right side of the air outlet 12 (the left and right sides are relative to the front side, and the left and right sides of the air outlet 12 are opposite), the air flow direction of the air inlet 11 is perpendicular to the air flow direction of the air outlet 12, where the perpendicular is about perpendicular, and the deviation angle is within the range of 20 °. Centrifugal fan 3 makes the air flow to the direction of air outlet 12 through the centrifugal force that the flabellum rotated the production, and the flabellum rotational speed is low, and wind-force is bigger, and the noise is also littleer than direct current fan 3.

Referring to fig. 3, in the preferred embodiment, the air outlet 12 is provided with a wind guiding structure 8, and the wind guiding structure 8 is gradually contracted from the upstream of the wind flow to the downstream thereof. The wind guide structure 8 which gradually contracts enables wind pressure to be increased, and wind speed is also larger.

Referring to fig. 2 and 4, in a preferred embodiment, a blowing duct is formed between the air inlet 11 and the air outlet of the air outlet 12; a battery accommodating groove 50 for accommodating the battery 5 is further arranged in the shell 1, and a heat dissipation air duct 51 is arranged at the side edge of the battery accommodating groove 50; the heat dissipation air duct 51 is communicated with the blowing air duct. The centrifugal fan 3 forms a negative pressure area in the middle thereof, the air inlet 11 and the heat dissipation air duct 51 are both communicated with the negative pressure area, and the air flows by the suction force generated by the negative pressure area. Specifically, the casing 1 is further provided with a heat dissipation air duct air inlet, and the heat dissipation air duct air inlet, the heat dissipation air duct 51 and the blowing air duct are sequentially communicated.

In the preferred embodiment, a negative pressure region is formed near the fan 3, the negative pressure region also belongs to a part of the blowing air duct, and the air outlet 512 of the heat dissipation air duct is communicated with the negative pressure region of the blowing air duct. The air current in the heat dissipation air duct 51 can flow to the negative pressure region, and the air current can take away the heat on the battery when passing through the heat dissipation air duct 51, and is cooled for the battery, and the air current through the heat dissipation air duct 51 absorbs the heat on the battery, carries out recycle to this heat, the energy saving. In another embodiment, the air outlet 512 of the heat dissipation air duct communicates with other positions of the air blowing air duct, and since the air pressure of other positions of the air blowing air duct except for the negative pressure region is slightly higher than the atmospheric pressure, the air flow in the air blowing air duct will flow to the outside through the heat dissipation air duct 51, and can also dissipate heat of the battery.

In a preferred embodiment, the control circuit board 2 is provided with a heat conducting member for assisting heat dissipation; the heat conducting piece comprises a metal core and a silica gel shell, and the metal core is coated by the silica gel shell. Furthermore, the heat conducting piece is fixed on the control circuit board 2, so that the heat dissipation area of the control circuit board is increased, and the auxiliary heat dissipation effect is achieved. Specifically, the heat-conducting member is fixed to the peripheral side of some of the components on the control circuit board 2, which generate a large amount of heat. In another embodiment, the heat conducting member may also be a copper foil for increasing the heat dissipation area of the control circuit board 2.

In a preferred embodiment, the left side and the right side of the electric hair drier are respectively provided with a left air inlet and a right air inlet, the fan 3 is positioned between the left air inlet and the right air inlet, the left air inlet is communicated with the right air inlet, and an air blowing duct is formed between the left air inlet and the right air inlet. A battery accommodating groove 50 for accommodating the battery 5 is further arranged in the shell 1, and a heat dissipation air duct 51 is arranged at the side edge of the battery accommodating groove 50; the heat dissipation air duct 51 is communicated with the blowing air duct. The heat dissipation air duct 51 supplies air to dissipate heat of the battery 5, and the air flows through the heat dissipation channel and then is mixed into the air flow in the air blowing duct.

In a further preferred embodiment, a battery accommodating groove 50 for accommodating the battery 5 is further provided in the housing 1, a battery holder 4 for positioning the battery 5 is provided in the battery accommodating groove 50, and the battery 5 is not in contact with the inner wall of the housing 1. The bottom of the handle part is provided with a heat dissipation air duct air inlet 511 communicated with the battery accommodating groove, and the heat of the battery is taken away by the air flow entering from the heat dissipation air duct air inlet 511. The casing 1 includes handle portion, and battery storage tank 50 sets up on handle portion, and battery 5 generates heat and hardly transmits the heat to the handle, and battery 5 still has the heat dissipation channel heat dissipation moreover, so, the user can not experience battery 5 and generate heat, uses and experiences better.

Referring to fig. 1, in a preferred embodiment, the hair dryer further includes a rechargeable battery 5 and a wireless charging structure, both the rechargeable battery 5 and the wireless charging structure are electrically connected to the control circuit board 2, and it should be noted that the wireless charging structure means that the hair dryer itself does not have a charging conductor. The fan operates on the power supplied by the rechargeable battery. Wireless charging structure is for magnetism to inhale formula charging structure 6, during the use, and the head that charges is inserted on the socket, and overhead being provided with of charging is inhaled formula charging structure 6 matched with mechanism with this magnetism, can realize wireless charging. This hairdryer is fixedly connected with electric wire not, and it is all more convenient to use and accomodate.

Referring to fig. 1 and 5, in a preferred embodiment, the hair dryer further comprises a handle, and the control key 8 is located on the side of the handle. The electric hair drier also comprises a display screen 9, the display screen 9 is also positioned on the side face of the electric hair drier, the display screen 9 and the control key 8 are positioned on the same side of the electric hair drier, the electric hair drier is convenient to operate and control, and the display state on the screen can be conveniently watched.

In another preferred embodiment, an air inlet 11 is arranged on the side opposite to the control key 8, a display screen 9 is arranged on the side same as the control key 8, and the display screen 9 is arranged opposite to the air inlet 11. At this time, one side of the air inlet enters air.

Referring to fig. 5, in a preferred embodiment, the air outlet 12 of the hair dryer is provided with a magnetic attraction element 120, where the magnetic attraction element 120 refers to an object that can be attracted by a magnet or the like; be fixed with tuyere 7 on hairdryer's the air outlet 12, tuyere 7 can be dismantled with casing 1 and be connected, and the inboard of tuyere 7 is provided with magnetic force piece 71, and magnetic force piece 71 and tuyere 7 fixed connection, magnetic force piece 71 indicate to have magnetic object, can adsorb metalworks such as iron, steel, and magnetic force piece 71 sets up with the cooperation of magnetism piece 120.

In a preferred embodiment, the second set temperature is higher than the first set temperature, and if the temperature measured by the temperature sensor when the electric blower is started is higher than the first set temperature and lower than the second set temperature, the control circuit board 2 controls the fan 3 and the heating device 13 to operate according to a third mode; the wind speed in the third mode is lower than the wind speed in the second mode and higher than the wind speed in the first mode, and the wind temperature in the third mode is higher than the wind temperature in the second mode and lower than the wind temperature in the first mode.

The utility model also provides a control method of the electric hair drier, which comprises the following steps,

starting the electric hair drier;

the temperature sensor transmits the measured data to the control circuit board 2;

if the measured temperature of the temperature sensor is lower than the set temperature, the control circuit board 2 controls the fan 3 and the heating device 13 to operate according to a first mode;

if the measured temperature of the temperature sensor is higher than the set temperature, the control circuit board 2 controls the fan 3 and the heating device 13 to operate according to a second mode;

the wind speed in the first mode is lower than the wind speed in the second mode, and the wind temperature in the first mode is higher than the wind temperature in the second mode.

The first mode of operation is typically used when the ambient temperature is low, such as in winter; the second mode of operation is typically used when the ambient temperature is high, such as in summer.

The utility model discloses a hairdryer is provided with temperature sensor and control circuit board 2, and temperature sensor gathers ambient temperature information and transmits for control circuit board 2, and control circuit board 2 sends the order to fan 3 and heating device 13 according to the information that temperature sensor gathered and settlement procedure, makes it can be according to settlement procedure automatic operation, need not artifical air speed and wind temperature of adjusting, uses the physical examination better.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above embodiments only express the specific embodiments of the utility model, and the description thereof is more specific and detailed, but not so as to limit the scope of the patent of the utility model. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The battery is characterized by comprising a battery body and an auxiliary radiating fin, wherein a positive pole and a negative pole are arranged on the battery body; the auxiliary radiating fin comprises a connecting section and a radiating section, the connecting section is fixedly connected with the positive pole and/or the negative pole, and the radiating section is bent relative to the connecting section;

2. The battery of claim 1, wherein the positive pole is connected to a positive conducting member, and the negative pole is connected to a negative conducting member.

3. The battery according to claim 2, wherein the positive electrode lead-through extends in a radial direction of the battery body, and a free end of the positive electrode lead-through protrudes from an edge of the battery body; the negative conducting piece also extends along the radial direction of the battery body, and the free end of the negative conducting piece also protrudes out of the edge of the battery body; the extending directions of the positive electrode conducting piece and the negative electrode conducting piece are the same.

4. The battery of claim 2, wherein the auxiliary heat sink is disposed in a shape of "7", only the negative electrode point is fixedly connected to the first auxiliary heat sink, and the first auxiliary heat sink is spaced from the positive electrode conductive member by a predetermined distance; the heat dissipation section and the battery body are also separated by a preset distance.

5. An electric hair drier is characterized by comprising a shell, a fan and the battery of any one of claims 1 to 4, wherein the fan is arranged inside the shell, the shell is provided with an air inlet and an air outlet, and an air blowing duct positioned in the shell is formed between the air inlet and the air outlet; a battery accommodating groove for accommodating the battery is formed in the shell, and a heat dissipation air duct is arranged at the periphery of the battery accommodating groove; the heat dissipation air channel is communicated with the blowing air channel.

6. The hair dryer of claim 5, wherein said housing includes a handle portion, said battery receiving slot being provided on the handle portion; the battery holder that is used for fixing a position the battery is arranged in the battery containing groove, the battery with the inner wall of the shell body is not contacted, and the bottom of the handle part is provided with a heat dissipation air duct air inlet communicated with the battery containing groove.

7. The hair dryer of claim 5, wherein a negative pressure area is formed near the blower, and an air outlet of the heat dissipation air duct is communicated with the negative pressure area of the air blowing duct.

8. The hair dryer of claim 5, further comprising a control circuit board, wherein the positive pole is connected with a positive conducting piece, the negative pole is connected with a negative conducting piece, and the positive conducting piece and the negative conducting piece are both electrically connected with the control circuit board; the heat dissipation section is close to the heat dissipation air duct.

9. The hair dryer of claim 5, further comprising a control circuit board on which a heat conducting member for assisting heat dissipation is provided;

the heat conducting piece is a copper foil.

10. The hair dryer according to any of the claims 5-7, characterized in that it further comprises heating means, a control circuit board and a temperature sensor, said heating means being arranged inside said casing, and said fan, heating means and said temperature sensor being electrically connected to said control circuit board, said temperature sensor being used to detect the ambient temperature; when the electric blowing is started, if the measured temperature of the temperature sensor is lower than or equal to a first set temperature, the control circuit board controls the fan and the heating device to operate according to a first mode; if the temperature measured by the temperature sensor is higher than a second set temperature which is equal to or higher than the first set temperature, the control circuit board controls the fan and the heating device to operate according to a second mode; the wind speed in the first mode is lower than the wind speed in the second mode, and the wind temperature in the first mode is higher than the wind temperature in the second mode.