CN210350808U - Safety charger for lithium battery - Google Patents

Abstract

The utility model discloses a lithium battery safety charger, including the machine body that charges, still include: the shell is used for loading the charger body; a folding leg disposed above the housing; and a support part arranged below the shell. Compare only the shell in prior art, this scheme has increased the folding leg for sunshade and rain-proof, and with the shell top between remain certain space, reduce the direct heat conduction of folding leg, guarantee the heat-sinking capability. The beneficial effects of the utility model include: the solar heat collector has the advantages of capability of preventing direct sunlight, strong heat dissipation capability, high stability, good reliability, simple structure and lower cost.

Description

Safety charger for lithium battery

Technical Field

The utility model relates to a lithium battery charging technology field, in particular to lithium battery safety charger.

Background

The lithium battery is widely applied to the devices such as energy storage batteries, energy automobiles, consumer electronics, electric tools and the like which are most excellent due to the characteristics of high new energy density, low self-discharge, no pollution, no memory effect and the like, and particularly in the field of new energy automobiles. The lithium battery has high technical requirements on a charger, and as a downstream industry of the lithium battery, the lithium battery charger (pile) also becomes a hotspot for research and development. Especially in the aspect of electric vehicle charging, the machine that charges uses comparatively extensively, and often need be in outdoor work, is influenced by the weather condition easily, forms the examination to security and performance.

The utility model with publication number CN201726165U discloses a high-capacity lithium battery odd-even parallel charging safety mode charger, which comprises a plurality of chargers connected in parallel, wherein the output end of each charger is correspondingly connected with a single lithium battery, and the input end of each charger is respectively provided with an independent control switch; the beat controller comprises a beat pulse generating unit, and a pulse control signal of the beat pulse generating unit is transmitted to the control switch. The beat controller also comprises a voltage registering unit and a voltage detecting unit, wherein a voltage signal when the single lithium battery has zero current is input to the voltage registering unit and the voltage detecting unit. The plurality of single lithium batteries can be respectively charged in odd and even order through the pulse control signal.

In the prior art, the heating condition of a charger is optimized in circuit design, and trees are rarely built on the aspects of heat dissipation of the charger or external environment influence prevention and the like.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a lithium battery safety charger, on having the basis of good basic performance, can reduce the influence of factors such as outdoor lower sunshine perpendicular incidence, improve the heat dispersion and the security that charge the machine.

The technical scheme of the utility model is as follows.

The utility model provides a lithium cell safety machine that charges, includes the machine body that charges, still includes: the shell is used for loading the charger body; a folding leg disposed above the housing; and a support part arranged below the shell. Compare only the shell in prior art, this scheme has increased the folding leg for sunshade and rain-proof, and with the shell top between remain certain space, reduce the direct heat conduction of folding leg, guarantee the heat-sinking capability.

Preferably, the folding leg includes: a connecting frame: the top of the shell and the sun shield can be rotatably connected; the sun shield is arranged on the top of the shell through the connecting frame. The both ends of connecting piece all connect shell and sunshading board through rotatable coupling's mode, realize receiving and releasing the function.

Preferably, the supporting part comprises a plurality of metal supporting columns, and the metal supporting columns are symmetrically arranged at the bottom of the shell. The main structure of the charger is kept at a certain distance from the ground by the support column, so that the heat dissipation capacity is improved.

Preferably, the folding frame comprises two sun visors and two groups of connecting frames, the side edges of the two sun visors are rotatably connected through connecting shafts, and each group of connecting frames is independently connected with one sun visor. A foldable structure is formed between the two sun visors and matched with the connecting frame to finish folding or unfolding.

Preferably, the connecting shaft of the side edge of the sun visor is positioned on the lower surface of the sun visor. This design makes the sunshading board can only be to one side folding, improves stability.

Preferably, when the sun visor is horizontally unfolded, the distance between the two groups of connecting frames and the connecting position of the sun visor is greater than or equal to the distance between the two groups of connecting frames and the connecting position of the shell. Namely, the whole body is inverted trapezoid after horizontal expansion, which is beneficial to improving the stability.

Preferably, a handle is arranged on the upper surface of the sun shield close to the connecting shaft. The handle is convenient to fold or unfold.

Preferably, the input end of the charger body is provided with an anti-interference circuit, one end of the anti-interference circuit is connected with an alternating current power supply, and the other end of the anti-interference circuit is connected with the charger body. The charger can generate larger electromagnetic interference when working, and the interference preventing circuit is used for preventing the interference from influencing each other between the power grid and the charger, thereby improving the stability and the reliability.

The beneficial effects of the utility model include: the solar heat collector has the advantages of capability of preventing direct sunlight, strong heat dissipation capability, high stability, good reliability, simple structure and lower cost.

Drawings

Fig. 1 is a schematic folding view of an embodiment of the present invention;

fig. 2 is an expanded schematic view of an embodiment of the present invention;

FIG. 3 is an enlarged view of the position A of the embodiment of the present invention;

fig. 4 is a schematic diagram of an interference prevention circuit according to an embodiment of the present invention;

in the figure: 1-shell, 2-folding rack, 3-supporting part, 4-handle and 5-connecting shaft.

Detailed Description

The technical scheme is further explained by combining the drawings in the specification.

Example (b):

as shown in fig. 1 and 2, the lithium battery safety charger includes a housing 1, a folding leg 2, and a support portion 3, wherein the folding leg 2 includes two sun-shading boards and two sets of connecting frames, the sun-shading boards are connected by a connecting shaft 5 as shown in fig. 3, and the sun-shading boards can only be folded downwards due to the design of the connecting shaft 5.

Compare only the shell in prior art, the folding leg has been increased to this embodiment for sunshade and rain-proof, and with the shell top between remain certain space, reduce the direct heat conduction of folding leg, guarantee the heat-sinking capability.

The sun shield of the embodiment is longer than the shell, when the sun shield is folded to a certain angle, the sun shield is abutted against the shell to form a shape similar to an eave, the sun shield is used for enabling outdoor sunlight irradiation angles to be different at different times, and if only a horizontal unfolding mode is used, the sunlight is easily irradiated, so that the temperature of a charger is increased. Meanwhile, the sun shield in an inclined state can also play a role of an umbrella in rainy days to guide water flow to fall down.

The supporting part 3 of this embodiment is the metal support, and the heat conductivility is strong, and can make somebody a mere figurehead with shell and earth's surface, increases the heat-sinking capability of shell, improves the security.

When the sun shield is horizontally unfolded, the distance between the two groups of connecting frames and the connecting position of the sun shield is equal to the distance between the two groups of connecting frames and the connecting position of the shell. Namely, the whole body is inverted trapezoid after horizontal expansion, which is beneficial to improving the stability.

A handle 4 is arranged on the upper surface of the sun shield close to the connecting shaft. The presence of the handle 4 facilitates the folding or unfolding operation.

The connecting shaft of the embodiment is provided with a damping mechanism, so that the sun visor can be fixed at a proper angle.

The input end of the charger body is provided with an anti-interference circuit, one end of the anti-interference circuit is connected with an alternating current power supply, and the other end of the anti-interference circuit is connected with the charger body.

Fig. 4 is a schematic diagram of the interference preventing circuit of the present embodiment, in which a voltage dependent resistor RV, a thermistor NTC, a relay, a common mode inductor L1, and several capacitors are used. The voltage dependent resistor RV is sensitive to voltage, is a voltage limiting type overvoltage protection device, can clamp the voltage of two ends of a resistor within a certain range, and therefore a protection circuit is not damaged by lightning high voltage or instantaneous voltage pulse of a power grid, and the voltage dependent resistor 10D471K is connected between input lines in parallel in the embodiment; before the thermistor is electrified, the resistance value is large, the current is prevented from increasing rapidly, after the current is increased, the temperature is increased, the resistance value is reduced, the thermistor can effectively restrain surge current, and after the current is stable, the thermistor is in short circuit through a relay, and the power consumption is reduced.

It should be noted that the specific embodiment is only used for further illustration of the technical solution, and is not used for limiting the scope of the technical solution, and any modification, equivalent replacement, improvement and the like based on the technical solution should be considered as being within the protection scope of the present invention.

Claims (6)

1. The utility model provides a lithium cell safety machine that charges, is including the machine body that charges, its characterized in that still includes:

the shell is used for loading the charger body;

a folding leg disposed above the housing;

a support part disposed below the housing;

the folding frame comprises two sun-shading boards and two groups of connecting frames, the sides of the two sun-shading boards are connected in a rotating mode through connecting shafts, and each group of connecting frames is connected with one sun-shading board independently.

2. The lithium battery safety charger according to claim 1, wherein the support portion includes a plurality of metal pillars symmetrically disposed at the bottom of the housing.

3. The lithium battery safety charger according to claim 1, wherein the connecting shaft at the side of the sun shield is located on the lower surface of the sun shield.

4. The lithium battery safety charger according to claim 3, wherein when the sun visor is horizontally unfolded, the distance between the two sets of connection brackets and the connection point of the sun visor is greater than or equal to the distance between the two sets of connection brackets and the connection point of the housing.

5. The lithium battery safety charger according to claim 3, wherein a handle is provided on the upper surface of the sun shield near the connecting shaft.

6. The safety charger according to claim 1, wherein the input end of the charger body is provided with an anti-interference circuit, one end of the anti-interference circuit is connected to the ac power source, and the other end of the anti-interference circuit is connected to the charger body.

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