CN201779758U - Portable hand warmer - Google Patents

Abstract

The utility model relates to a portable hand warmer, which comprises a barrel-shaped metal shell (1), a first end cover (100) and a second end cover (101), both ends of the shell (1) are sealed by the first end cover (100) and the second end cover (101), a circuit board (5), a chargeable battery (2) and a heating film (4) are arranged in the shell (1), and the chargeable battery (2) and the heating film (4) are respectively electrically connected with the circuit board (5). The portable hand warmer has the advantages of small size and light weight, and is convenient to carry.

Description

A kind of portable hand warmer

Technical field

The utility model relates to heating system, more particularly, relates to a kind of portable hand warmer.

Background technology

Need because of working or learning cold season, and our pushing time exposes in the environment of cold, very easily frostbite.Adopt the electric heater heating at present mostly.And the most volume of existing electric heater is bigger, is not easy to carry.

The utility model content

The technical problems to be solved in the utility model is, the defective at the above-mentioned existing electric heater of prior art is not easy to carry provides a kind of portable hand warmer.

The technical scheme that its technical problem that solves the utility model adopts is: construct a kind of portable hand warmer, first and second end cap that comprises cylindrical metal shell and seal the shell two ends is provided with in the described shell: circuit board and rechargeable battery that is electrically connected with circuit board respectively and heating film.

In portable hand warmer described in the utility model, be coated with heat dissipation film on the described heating film.

In portable hand warmer described in the utility model, described circuit board comprises: USB input interface, switch, charging module, temperature control and battery capacity detection module and secondary battery protective module;

Described USB input interface is electrically connected with charging module, temperature control and battery capacity detection module, heating film and rechargeable battery respectively; Described secondary battery protective module is electrically connected with rechargeable battery; Described switch is electrically connected with temperature control and battery capacity detection module, heating film and rechargeable battery.

In portable hand warmer described in the utility model, described charging module comprises charging indicator light.

In portable hand warmer described in the utility model, described battery capacity detection module comprises relay indicating light.

In portable hand warmer described in the utility model, described second end cap is provided with USB input interface hole, charging indicator light installing hole, relay indicating light installing hole and switch installing hole.

Implement portable hand warmer of the present utility model, have following beneficial effect:

1) portable hand warmer of the present utility model passes through to adopt the heating film heat supply, thereby makes the volume of hand warmer greatly reduce.

2) portable hand warmer of the present utility model also by adopting reusable rechargeable battery, not only helps environmental protection, and the rechargeable battery that can also make things convenient for the user to replenish hand warmer is at any time supplied with.

3) volume of portable hand warmer of the present utility model is little, and light weight is easy to carry.

Description of drawings

The utility model is described in further detail below in conjunction with drawings and Examples, in the accompanying drawing:

Fig. 1 is the inner member structural representation of the portable hand warmer specific embodiment of the utility model;

Fig. 2 is the cutaway view of the portable hand warmer specific embodiment of the utility model;

Fig. 3 is the second end cover structure schematic diagram of the portable hand warmer specific embodiment of the utility model;

Fig. 4 is the circuit theory diagrams of the portable hand warmer specific embodiment of the utility model.

The specific embodiment

As shown in Figure 1, portable hand warmer of the present utility model comprises: thecylindrical metal shell 1 of both ends open, its openend are respectively equipped withfirst end cap 100 andsecond end cap 101 of fixed installation to seal its openend.

Be provided with in the shell 1:rechargeable battery 2, theheating film 4 ofcircuit board 5 to be electrically connected withcircuit board 5 respectively.Be coated withheat dissipation film 3 on theheating film 4.

As shown in Figure 2,second end cap 101 is provided with USBinput interface hole 111, charging indicatorlight installing hole 121, relay indicating light installing hole 131 and switch installing hole 141.

As depicted in figs. 1 and 2, USBinput interface hole 111, charging indicatorlight installing hole 121, relay indicating light installing hole 131 and switch installing hole 141 are equipped withUSB input interface 6, charging indicator light 7,relay indicating light 8 andswitch 9 respectively.

As shown in Figure 1 and Figure 4,circuit board 5 comprises:USB input interface 6,switch 9,charging module 700, temperature control and batterycapacity detection module 800 and secondary battery protective module 200.USB input interface 6 is electrically connected withcharging module 700, temperature control and batterycapacity detection module 800,heating film 4 andrechargeable battery 2 respectively; Secondary batteryprotective module 200 is electrically connected withrechargeable battery 2; Switch 9 is electrically connected with temperature control and batterycapacity detection module 800,heating film 4 and rechargeable battery 2.Charging module 700 is provided with charging indicator light 7.Batterycapacity detection module 800 is provided withrelay indicating light 8.

Charging module 700 is used forrechargeable battery 2 is charged, and charging indicator light 7 work are in charged state with indicationrechargeable battery 2 torechargeable battery 2 chargings the time.In the present embodiment, charging indicator light 7 is red duringrechargeable battery 2 chargings, and charging finishes back charging indicator light 7 for green.Whencharging module 700 was started working, circuit is inner to be forced to stop to heatingfilm 4 heating.

Temperature control and batterycapacity detection module 800 are used to detect the temperature of battery capacity and hand warmer, if the undertension ofrechargeable battery 2,relay indicating light 8 is one bright one redness of going out, and in time charge to remind the user.When normal the and hand warmer of the voltage ofrechargeable battery 2 was in running order,relay indicating light 8 was green, andindication heating film 4 is in duty.Behindheating film 4 work certain hours, after the temperature that temperature control and batterycapacity detection module 800 detect hand warmer reaches predetermined value, the voltage that temperature control and batterycapacity detection module 800 are promptly controlledheating film 4 is to a certain degree to guarantee that hand warmer is in temperature constant state, at this moment,relay indicating light 8 is one bright one green glow that goes out.

Secondary batteryprotective module 200 prevents thatrechargeable battery 2 from producing bad reaction because of external charging charged battery voltage is too high when charging orrechargeable battery 2 is damaged.Rechargeable battery 2 charges byUSB input interface 6 external external charging batteries in the present embodiment.

The concrete using method of the described portable hand warmer of the foregoing description is:

Openswitch 9,relay indicating light 8 green light, indication is adding to be pined for, and indication reaches preset temperature when green glow one bright goes out, in the constant temperature.If the charged battery voltage deficiency, originally green light is bright, and to have become red light bright, and other are all the same.That is to say that red light can continue bright or one bright one went out this moment.

When the charged battery voltage deficiency needs charging, be inserted throughUSB input interface 6 connection external charging batteries and begin charging, the inner pressure of circuit stops to heat at this moment, and charging indicator light sends out a warning, and gives a green light after charging finishes.Up to the USB connection line that cuts off the external charging battery.

The above only is embodiment of the present utility model; be not so limit claim of the present utility model; every equivalent structure transformation that utilizes the utility model specification and accompanying drawing content to be done; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present utility model.

Claims (6)

1. portable hand warmer, it is characterized in that, first and second end cap (100,101) that comprises cylindrical metal shell (1) and seal shell (1) two ends, described shell is provided with in (1): circuit board (5) and rechargeable battery (2) that is electrically connected with circuit board (5) respectively and heating film (4).

2. according to the described portable hand warmer of claim 1, it is characterized in that, be coated with heat dissipation film (3) on the described heating film (4).

3. according to claim 1 or 2 described portable hand warmers, it is characterized in that described circuit board (5) comprising: USB input interface (6), switch (9), charging module (700), temperature control and battery capacity detection module (800) and secondary battery protective module (200);

Described USB input interface (6) is electrically connected with charging module (700), temperature control and battery capacity detection module (800), heating film (4) and rechargeable battery (2) respectively; Described secondary battery protective module (200) is electrically connected with rechargeable battery (2); Described switch (9) is electrically connected with temperature control and battery capacity detection module (800), heating film (4) and rechargeable battery (2).

4. according to the described portable hand warmer of claim 3, it is characterized in that described charging module (700) also is connected with charging indicator light (7).

5. according to the described portable hand warmer of claim 4, it is characterized in that described battery capacity detection module (800) also is connected with relay indicating light (8).

6. according to the described portable hand warmer of claim 5, it is characterized in that described second end cap (101) is provided with USB input interface hole (111), charging indicator light installing hole (121), relay indicating light installing hole (131) and switch installing hole (141).

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