Battery pack charging heat dissipation air duct structure

Abstract

The utility model discloses a battery pack charging heat dissipation air duct structure which comprises a battery pack and a charging base, the battery pack comprises a battery shell and a battery cell, the battery shell surrounds the battery cell and forms an air flow channel around the battery cell, and the battery shell is provided with an air inlet and an air outlet. The charging base comprises an upper shell, a bottom shell, a base heat dissipation system and an exhaust air duct arranged on the surface of the upper shell, an exhaust fan is arranged in the exhaust air duct, the exhaust air duct is provided with an air duct inlet at the upstream of the exhaust fan, and an air duct outlet at the downstream of the exhaust fan; when the battery pack is connected with the charging base for charging, air enters the battery pack from the air inlet of the battery pack, cools the battery cells along the air flow channel, flows to the air outlet, flows out of the air outlet, flows into the exhaust air channel through the air channel inlet, and flows out of the air channel outlet after passing through the exhaust fan. According to the utility model, air cooling is formed on the battery pack in the large-current charging process of the battery pack, so that cooling and heat dissipation of the battery pack are completed.

Description

Technical Field

[0001] The utility model relates to the field of battery pack chargers, in particular to a battery pack charging heat dissipation air duct structure. Background Art

[0002] With the continuous development of battery technology and charging technology, battery capacity is getting higher and higher. In order to increase the charging speed of large-capacity batteries, charging equipment has to increase the current during the charging process. However, charging with too large a current will cause the battery to generate a lot of heat. Some charging equipment will automatically enter a protection program to prevent the temperature from being too high, affecting the charging efficiency. In more serious cases, it may even cause dangerous situations such as battery spontaneous combustion and explosion. Utility Model Content

[0003] In order to solve the problem of battery heating caused by high-current charging, the utility model proposes a battery pack charging heat dissipation air duct structure, by arranging connected air flow channels and exhaust fans on the battery pack and the charging base, the battery cells of the battery pack can be cooled by the surrounding air during the charging process, thereby reducing the temperature of the battery cells and exhausting the hot air in time.

[0004] The utility model is realized by the following technical solutions:

[0005] A battery pack charging heat dissipation duct structure comprises a battery pack and a charging base, wherein the battery pack is provided with a charging slider, one end of the charging slider is provided with a battery connector, the charging base is provided with a slide groove with one end open, and the bottom end of the slide groove is provided with a charging connector, when the battery pack needs to be charged, the charging slider slides from the open end of the slide groove along the slide groove to the bottom end of the slide groove so that the battery connector is connected with the charging connector for charging, the battery pack comprises a battery shell and a battery cell, the battery shell surrounds the battery cell and forms an air flow channel around the battery cell, the battery connector is arranged on the outer surface of the battery shell; the battery shell is provided with an air inlet and an air outlet both of which are connected with the air flow channel inside the battery pack, and the air outlet is arranged on the surface of the charging slider; the charging base comprises an upper shell, a bottom shell, a base heat dissipation system and an exhaust air duct arranged on the upper shell, and the base heat dissipation system is arranged on the upper shell and the space surrounded by the bottom shell; the exhaust duct comprises an air duct inlet, an air intake section, an exhaust fan, an air outlet section and an air duct outlet, the air duct inlet is arranged in the slide groove, and the air duct outlet is arranged on the surface of the upper shell, one end of the air intake section is connected to the air duct inlet, and the other end is connected to the exhaust fan, one end of the air outlet section is connected to the exhaust fan, and the other end is connected to the air duct outlet, the exhaust duct is formed by the air intake section, the exhaust fan and the air outlet section to form a flow channel which is relatively independent of the space surrounded by the upper shell and the bottom shell; when the battery pack is connected to the charging base for charging, the air outlet is connected to the air duct inlet in the space between the charging slider and the slide groove, the air enters the interior of the battery pack from the air inlet of the battery pack and flows along the air flow channel to the air outlet, and then flows out through the air outlet and then flows into the exhaust duct through the air duct inlet, passes through the exhaust fan, and then flows out from the air duct outlet.

[0006] As a further improvement to the present invention, the air inlet is a grid-shaped inlet. Setting the air inlet as a grid-shaped inlet can prevent larger impurities in the air from entering the battery pack with the airflow during charging, and can also prevent foreign matter from entering the battery pack during normal use of the battery pack.

[0007] As a further improvement of the utility model, the air outlet is a grid-shaped outlet, and the grid is triangular, circular or square. Setting the air outlet as a grid-shaped outlet can prevent foreign matter from entering the battery pack during normal use of the battery pack. The properly set air inlet structure and the air outlet structure can also play a role in adjusting the air flow.

[0008] As a further improvement of the utility model, the air duct inlet is a regular grid or mesh inlet. Setting the air duct inlet to a regular grid or mesh shape can prevent foreign matter from entering the exhaust duct when not charging, causing exhaust fan failure.

[0009] As a further improvement of the utility model, the air duct outlet is a grid-shaped outlet. The grid-shaped air duct outlet is also to prevent foreign matter from entering the exhaust air duct when not charging, causing exhaust fan failure.

[0010] A further improvement of the utility model is that a ventilation grille is provided on the bottom shell, and the base heat dissipation system includes a control board fan and a heat sink, and the heat sink is arranged downstream of the control board fan. When the battery pack is charged, the control board fan is started, and air flows into the space surrounded by the upper shell and the bottom shell through the ventilation grille on the air inlet side of the control board fan. The control board fan blows the air through the heat sink, and the air flows out through the ventilation grille on the air outlet side of the control board fan after blowing through the heat sink. During the charging process, not only the battery cells in the battery pack will heat up, but also the battery connector and the charging connector will generate heat when the large current passes through them. Correspondingly, the charging base will also generate heat. Therefore, the base heat dissipation system can reduce the temperature inside the entire charging base to prevent the components in the charging base from being damaged due to heat.

[0011] A further improvement to the utility model is that the axis of the control panel fan is perpendicular to the axis of the exhaust fan, which can improve the overall temperature field of the battery pack and the charging base when they are connected, avoid the occurrence of high-temperature concentrated areas, and this arrangement method makes the intake and exhaust directions of the air flow channels generated by the control panel fan and the exhaust fan staggered, avoiding mutual interference of airflows.

[0012] A further improvement to the utility model is that when charging, the charging base is placed on the ground or other horizontal surface, the axis of the control panel fan is parallel to the ground or other horizontal surface, the angle between the axis of the exhaust fan and the ground or horizontal surface is less than 90°, and the exhaust direction of the exhaust fan blows toward the ground or other horizontal surface along the axis of the exhaust fan, thereby preventing people or objects around the charging base from being affected by hot air during the charging process.

[0013] In a further improvement of the utility model, a fan base is provided on the bottom shell, one side of the fan base is connected to the ventilation grille, and the control panel fan is arranged in the fan base. The control panel fan is arranged close to the ventilation grille so that the air can be concentratedly passed through the control panel fan after passing through the ventilation grille, thereby improving the cooling efficiency of the control panel fan.

[0014] Compared with the prior art, the utility model has the following main advantages: during the charging process of the battery pack, air can be continuously introduced into the battery cells for cooling and hot air can be removed in time, thereby avoiding the heating of the battery cells in the battery pack. At the same time, considering that the heat not only occurs inside the battery pack, corresponding heat dissipation measures are also taken for the charging base to protect the components in the charging base. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is an overall schematic diagram of the charging heat dissipation air duct structure of the battery pack of the utility model;

[0017] Figure 2 It is a schematic diagram of the battery pack structure of the utility model battery pack charging heat dissipation air duct structure;

[0018] Figure 3 This is a schematic diagram of the charging base structure of the battery pack charging heat dissipation duct structure of the utility model;

[0019] Figure 4 This is a schematic diagram of the charging base structure of the battery pack charging heat dissipation duct structure of the utility model;

[0020] Figure 5 This is an exploded view of the battery pack charging heat dissipation air duct structure of the utility model;

[0021] Figure 6 This is a schematic diagram of the control panel fan installation of the battery pack charging heat dissipation air duct structure of the utility model;

[0022] Figure 7 It is a three-dimensional cross-sectional view of the heat dissipation duct structure of the battery pack of the utility model;

[0023] Figure 8 This is a cross-sectional view of the heat dissipation duct structure of the battery pack of the utility model;

[0024] Fig. 9 It is a partial cross-sectional view of the heat dissipation duct structure of the battery pack charging of the utility model;

[0025] Fig.10 This is a cross-sectional view of the heat dissipation duct structure of the battery pack of the utility model;

[0026] Fig.11 It is an exploded view of the exhaust air duct of the battery pack charging heat dissipation air duct structure of the utility model. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions of various embodiments of the utility model in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] The present invention is further described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0029] A battery pack charging heat dissipation duct structure comprises a battery pack 1 and a charging base 2. A charging slider 3 is provided on the battery pack 1. A battery connector 4 is provided at one end of the charging slider 3. In the present embodiment, the battery connector 4 is a female terminal structure. A slide groove 5 with an open end is provided on the charging base 2. A charging connector 6 is provided at the bottom of the slide groove 5. In the present embodiment, the charging connector 6 is a male terminal structure. When the battery pack 1 needs to be charged, the charging slider 3 slides from the open end of the slide groove 5 along the slide groove 5 to the bottom of the slide groove so that the battery connector 4 is connected to the charging connector 6 for charging.

[0030] The battery pack 1 includes a battery shell 7 and a battery cell 8. The battery shell 7 surrounds the battery cell 8 and forms an air flow channel 9 around the battery cell 8. The battery connector 4 is arranged on the outer surface of the battery shell 7. The battery shell 7 is provided with an air inlet 10 and an air outlet 11, both of which are connected to the air flow channel 9 inside the battery pack 1. The air outlet 11 is arranged on the surface of the charging slider 3.

[0031] The charging base 2 includes an upper shell 12, a bottom shell 13, a base heat dissipation system and an exhaust duct 14 arranged on the upper shell 12. The base heat dissipation system is arranged in a space surrounded by the upper shell 12 and the bottom shell 13; the exhaust duct 14 includes an air duct inlet 16, an air inlet section 22, an exhaust fan 15, an air outlet section 23 and an air duct outlet 17. The air duct inlet 16 is arranged in the slide groove 5, and the air duct outlet 17 is arranged on the surface of the upper shell 12. One end of the air inlet section 22 is connected to the air duct inlet 16, and the other end is connected to the exhaust fan 15. One end of the air outlet section 23 is connected to the exhaust fan 15, and the other end is connected to the exhaust fan 15. The air duct outlet 17, the exhaust air duct 14 forms an independent flow channel in the space surrounded by the upper shell 12 and the bottom shell 13 through the air inlet section 22, the exhaust fan 15 and the air outlet section 23; when the battery pack 1 is connected to the charging base 2 for charging, the air outlet 11 and the air duct inlet 16 are connected in the space between the charging slider 3 and the slide groove 5, and the air enters the battery pack 1 from the air inlet of the battery pack 1 and flows along the air flow channel 9 to the air outlet 11, and then flows out through the air outlet 11 and then flows into the exhaust air duct 14 through the air duct inlet 16, passes through the exhaust fan 15, and then flows out from the air duct outlet 17.

[0032] The air inlet 10 is a grid-shaped inlet. Setting the air inlet 10 as a grid-shaped inlet can prevent larger impurities in the air from entering the battery pack 1 along with the airflow during the charging process, and can also prevent foreign matter from entering the battery pack 1 during normal use of the battery pack 1.

[0033] The air outlet 11 is a grid-shaped outlet, and the grid is triangular. Setting the air outlet 11 as a grid-shaped outlet can prevent foreign matter from entering the battery pack 1 during normal use of the battery pack 1. Reasonable settings of the air inlet 10 structure and the air outlet 11 structure can also play a role in adjusting the air flow.

[0034] The air duct inlet 16 is a regular grid-shaped inlet. Setting the air duct inlet 16 to a regular grid or mesh shape can prevent foreign matter from entering the exhaust air duct when not charging, causing the exhaust fan 15 to malfunction.

[0035] The air duct outlet 17 is a grid-shaped outlet, and the grid-shaped air duct outlet 17 is also used to prevent foreign objects from entering the exhaust air duct when not charging, causing the exhaust fan 15 to malfunction.

[0036] A ventilation grille 18 is provided on the bottom shell 13, and the base heat dissipation system includes a control panel fan 19 and a heat sink 20. The heat sink 20 is provided downstream of the control panel fan 19. When the battery pack 1 is charged, the control panel fan 19 is started, and air flows into the space surrounded by the upper shell 12 and the bottom shell 13 through the ventilation grille 18 on the air inlet side of the control panel fan 19. The control panel fan 19 blows the air through the heat sink 20, and the air flows out through the ventilation grille 18 on the air outlet side of the control panel fan 19 after blowing through the heat sink 20. During the charging process, not only the battery cells 8 in the battery pack 1 will heat up, but also the battery connector 4 and the charging connector 6 will generate heat when the large current passes through them, and the corresponding charging base 2 will also generate heat. Therefore, the base heat dissipation system can reduce the temperature inside the entire charging base 2 to prevent the components in the charging base 2 from being damaged due to heat.

[0037] The axis X2 of the control panel fan 19 is perpendicular to the axis X1 of the exhaust fan 15, which can improve the overall temperature field of the battery pack 1 and the charging base 2 when they are connected, avoiding the occurrence of high-temperature concentrated areas. In addition, this arrangement method makes the air intake and exhaust directions of the air flow channels 9 generated by the control panel fan 19 and the exhaust fan 15 staggered, avoiding mutual interference of airflows.

[0038] When the battery pack 1 in this embodiment is charging, the charging base 2 is placed on the ground, the axis X2 of the control panel fan 19 is parallel to the ground, the axis X1 of the exhaust fan 15 is at an angle of 30° to the ground, and the exhaust direction of the exhaust fan blows toward the ground along the axis of the exhaust fan, thereby preventing people or objects around the charging base 2 from being affected by hot air during the charging process.

[0039] A fan base 21 is provided on the bottom shell 13, one side of the fan base 21 is connected to the ventilation grille 18, and the control panel fan 19 is arranged in the fan base 21. The control panel fan 19 is arranged close to the ventilation grille 18 so that the air can be concentratedly passed through the control panel fan 19 after passing through the ventilation grille 18, thereby improving the cooling efficiency of the control panel fan 19.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solution recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solution from the technical solution of the embodiments of the utility model.

Claims

1. A battery pack charging heat dissipation duct structure, comprising a battery pack and a charging base, wherein the battery pack is provided with a charging slider, one end of the charging slider is provided with a battery connector, the charging base is provided with a slide groove with one end open, and the bottom end of the slide groove is provided with a charging connector, when the battery pack needs to be charged, the charging slider slides from the open end of the slide groove along the slide groove to the bottom end of the slide groove so that the battery connector is connected with the charging connector for charging, characterized in that: The battery pack comprises a battery housing and a battery cell, wherein the battery housing surrounds the battery cell and forms an air flow channel around the battery cell, and the battery connector is arranged on an outer surface of the battery housing; The battery housing is provided with an air inlet and an air outlet both of which are in communication with the air flow channel inside the battery pack, and the air outlet is provided on the surface of the charging slider; The charging base comprises an upper shell, a bottom shell, a base heat dissipation system and an exhaust air duct arranged on the upper shell, and the base heat dissipation system is arranged in a space surrounded by the upper shell and the bottom shell; The exhaust duct includes an air duct inlet, an air inlet section, an exhaust fan, an air outlet section and an air duct outlet, wherein the air duct inlet is arranged in the chute, and the air duct outlet is arranged on the surface of the upper shell, one end of the air inlet section is connected to the air duct inlet, and the other end is connected to the exhaust fan, one end of the air outlet section is connected to the exhaust fan, and the other end is connected to the air duct outlet, and the exhaust duct forms a relatively independent flow channel with respect to the space surrounded by the upper shell and the bottom shell through the air inlet section, the exhaust fan and the air outlet section; When the battery pack is connected to the charging base for charging, the air outlet is connected to the air duct inlet in the space between the charging slider and the slide groove, and air enters the battery pack from the air inlet of the battery pack and flows along the air duct to the air outlet, and then flows out through the air outlet, flows into the exhaust duct through the air duct inlet, and then flows out from the air duct outlet after passing through the exhaust fan.

2. The battery pack charging heat dissipation duct structure according to claim 1, characterized in that: The air inlet is a grid-shaped inlet.

3. The battery pack charging heat dissipation duct structure according to claim 1, characterized in that: The air outlet is a grid-shaped outlet, and the grid is triangular, circular or square.

4. The battery pack charging heat dissipation duct structure according to claim 1, characterized in that: The air duct inlet is a regular grid-shaped or mesh-shaped inlet.

5. The battery pack charging heat dissipation duct structure according to claim 1, characterized in that: The air duct outlet is a grid-shaped outlet.

6. The battery pack charging heat dissipation duct structure according to any one of claims 1 to 5, characterized in that: A ventilation grille is provided on the bottom shell, and the base heat dissipation system includes a control board fan and a heat sink. The heat sink is arranged downstream of the control board fan. When the battery pack is charged, air flows into the space surrounded by the upper shell and the bottom shell through the ventilation grille, and the control board fan blows the air through the heat sink.

7. The battery pack charging heat dissipation duct structure according to claim 6, characterized in that: The axis of the control panel fan is perpendicular to the axis of the exhaust fan.

8. The battery pack charging heat dissipation air duct structure according to claim 7, characterized in that: During charging, the charging base is placed on the ground or other horizontal surface, the axis of the control panel fan is parallel to the ground or other horizontal surface, the angle between the axis of the exhaust fan and the ground or horizontal surface is less than 90°, and the exhaust direction of the exhaust fan blows toward the ground or other horizontal surface along the axis of the exhaust fan.

9. The battery pack charging heat dissipation duct structure according to claim 7, characterized in that: A fan base is provided on the bottom shell, one side of the fan base is connected to the ventilation grille, and the control panel fan is arranged in the fan base.

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