Heat dissipation structure of battery pack and battery pack

Abstract

The heat dissipation structure comprises a back frame and an accommodating shell connected with the back frame, the back frame can be in contact fit with the back of a human body, a battery body is arranged in the accommodating shell, a fan is arranged in the accommodating shell, an air inlet and an air outlet are formed in the accommodating shell, and the air inlet and the air outlet are communicated with the accommodating shell. The fan sucks air from the air inlet and exhausts the air from the air outlet; the back frame is arranged on one side of the air outlet, a flow dividing body and a plurality of heat dissipation holes are formed in the back frame, the heat dissipation holes are distributed around the flow dividing body, the position of the flow dividing body corresponds to the position of the air outlet, and the flow dividing body is used for dividing air from the air outlet to the heat dissipation holes. According to the utility model, the heat dissipation cost can be reduced, the working noise is reduced, a better heat dissipation effect is provided, and the use experience is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical components, and particularly relates to a heat dissipation structure and a battery pack for a battery pack. Background Technique

[0002] At present, a backpack battery pack is a new power source for providing power, which can provide power for a variety of garden tools such as chain saws, blowers, lawn mowers, and pruning shears. Due to the usage scenario of the backpack type, the back is prone to heat up during use, affecting the user experience. Therefore, it is necessary to add a heat dissipation structure to the battery pack. For example, a backpack battery pack and a garden tool disclosed in the patent number CN218632217U include: a body, one outer wall of the body forms a fitting part, and the fitting part fits against the human back in the actual wearing state; a battery pack compartment fixed to the body; a battery pack installed in the battery pack compartment; a first heat dissipation device installed on the body, and the first heat dissipation device includes: a first heat dissipation air duct and a first fluid driving unit. This heat dissipation device requires a large number of fans, has a high cost, and has insufficient heat dissipation effect and poor user experience. Content of the Utility Model

[0003] The utility model is to avoid the deficiencies of the prior art and provides a heat dissipation structure and a battery pack for a battery pack with low cost and high heat dissipation effect.

[0004] The utility model solves the technical problem by adopting the following technical scheme: a heat dissipation structure of a battery pack, including a back frame and a receiving shell connected to the back frame, the back frame can be in contact and cooperation with the human back, a battery body is arranged in the receiving shell, a fan is arranged in the receiving shell, the receiving shell has an air inlet and an air outlet, and the fan inhales air from the air inlet and discharges it from the air outlet;

[0005] The back frame is arranged on one side of the air outlet, a fluid splitter and a plurality of heat dissipation holes are arranged on the back frame, the heat dissipation holes are distributed around the fluid splitter, the position of the fluid splitter corresponds to the position of the air outlet, and the fluid splitter is used to split the air from the air outlet to the heat dissipation holes.

[0006] In several embodiments, an installation area is provided in the receiving shell for accommodating the fan, the air outlet is located at the end of the installation area and communicates with the outside of the receiving shell;

[0007] A switch is arranged on the receiving shell, and the switch is used to control the opening and closing of the fan.

[0008] In several embodiments, the air inlet is located at the lower end of the receiving shell, and the air inlet communicates with the installation area.

[0009] In several embodiments, a first air-concentrating body is provided on one side of the air outlet of the accommodating housing, and the first air-concentrating body surrounds the air outlet therein.

[0010] In several embodiments, a second air-concentrating body is provided on the back frame, and the second air-concentrating body surrounds the heat dissipation holes therein. The positions of the first air-concentrating body and the second air-concentrating body correspond to each other to form an air-collecting area.

[0011] In several embodiments, the fluid splitter protrudes, and the fluid splitter has a tendency to gradually shrink from one end close to the back frame to the other end away from the back frame, and there is a gap between the fluid splitter and the air outlet.

[0012] In several embodiments, the accommodating housing includes a front shell, a rear shell and an upper cover. The front shell and the rear shell are combined to form an accommodating main body. The installation area is arranged in the accommodating main body. The battery body and the fan are arranged in the accommodating main body, and the upper cover closes the upper end opening of the accommodating main body.

[0013] In several embodiments, the installation area protrudes and is located in the middle of the accommodating main body to form two battery body installation areas. The fan is a vortex fan, and the air inlet area of the fan is in air path communication with both of the two battery body installation areas. The battery body is arranged in the battery body installation areas on both sides of the installation area.

[0014] In several embodiments, the first air-concentrating body is arranged on the same side of the rear shell and the upper cover.

[0015] And, a battery pack including the heat dissipation structure of the above battery pack, wherein a back strap is provided on the back frame, and the back strap is for human body to wear.

[0016] The utility model has the following beneficial effects:

[0017] The utility model can reduce the heat dissipation cost, reduce the number of fans and the working noise, and improve the use experience.

[0018] Through the combined structure of the fluid splitter and the heat dissipation holes, the utility model can realize uniform air outlet in multiple ranges under a single fan, improve the heat dissipation effect, and has mild air outlet and good use experience.

[0019] Through the setting of the air-collecting area, the utility model can be used as a buffer interval to reduce the wind speed, uniformly disperse the air flow and discharge it through the heat dissipation holes, thereby further reducing the noise. Description of the Drawings

[0020] The drawings described herein are only for the purpose of illustration of the selected embodiments and do not represent all possible embodiments, and should not be considered as a limitation of the scope of the utility model.

[0021] Figure 1Schematically shows the overall structure of the battery pack in Embodiment 1;

[0022] Figure 2 Schematically shows the exploded structure of the battery pack in Embodiment 1;

[0023] Figure 3 Schematically shows Figure 2 the enlarged structure of the back frame;

[0024] Figure 4 Schematically shows Figure 2 the structure in another perspective;

[0025] Figure 5 Schematically shows Figure 1 the sectional structure of. Detailed implementation manners

[0026] Next, the embodiments of the present invention will be described in detail. To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are some, rather than all, of the embodiments of the present invention.

[0027] Therefore, the detailed description of the embodiments of the present invention provided below is not intended to limit the scope of the present invention claimed, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0028] The terms used herein are intended to explain the embodiments and are not intended to limit and / or define the present invention.

[0029] Embodiment 1

[0030] As Figures 1-5 shown, the battery pack in this embodiment is mainly composed of a back frame 20, a receiving housing 10 connected to the back frame 20, a battery body disposed in the receiving housing 10, a back strap 90 disposed on the back frame 20, and an internal heat dissipation unit. After the back strap 90 is worn by a person, the back frame 20 can come into contact with the human back, and the heat dissipation unit blows air to dissipate heat from the human back.

[0031] Here, the receiving housing 10 includes a front shell 11, a rear shell 12, and an upper cover 13. The front shell 11 and the rear shell 12 are combined to form a receiving main body, and the upper cover 13 closes the upper end opening of the receiving main body.

[0032] Specifically, the heat dissipation unit is composed of the following structure: A fan 30 is arranged inside the accommodation housing 10. The accommodation housing 10 has an air inlet 101 and an air outlet 102. The fan 30 sucks air from the air inlet 101 and discharges it from the air outlet 102. The back frame 20 is arranged on one side of the air outlet 102. A fluid splitter 40 and a plurality of heat dissipation holes 50 are arranged on the back frame 20. The heat dissipation holes 50 are distributed around the fluid splitter 40. The position of the fluid splitter 40 corresponds to the position of the air outlet 102. The fluid splitter 40 is used to split the air from the air outlet 102 to the heat dissipation holes 50.

[0033] Among them, an installation area 100 is provided inside the accommodation housing 10. The installation area 100 is specifically arranged inside the accommodation main body. The battery body and the fan 30 are arranged inside the accommodation main body. The installation area 100 protrudes and is located in the middle of the accommodation main body, and thus two battery body installation areas are formed on both sides thereof. The installation area 100 is used to accommodate the fan 30. The air outlet 102 is located at the end of the installation area 100 and communicates with the outside of the accommodation housing 10. The battery body is arranged in the battery body installation areas on both sides of the installation area 100. The fan 30 is located in the middle position, which is beneficial to uniform air discharge. And the fan 30 is a vortex fan, and the air inlet area of the fan 30 is in gas path connection with both battery body installation areas.

[0034] Meanwhile, on the accommodation housing 10, specifically at the position of the upper cover 13, a switch 60 is provided. The switch 60 is used to control the opening and closing of the fan 30.

[0035] In addition, the air inlet 101 is located at the lower end of the accommodation housing 10. The air inlet 101 is connected to the installation area 100. The lower end of the accommodation housing 10 has an inward depression, which generally forms a chevron structure. The air inlet 101 is located at the positions of the two side walls of the groove, which is convenient for air intake.

[0036] Meanwhile, in order to improve the air outlet effect, a first air gathering body 70 is provided on one side of the air outlet 102 of the accommodation housing 10. The first air gathering body 70 is arranged on the same side of the rear shell 12 and the upper cover 13, that is, the first air gathering body 70 is distributed on both of them. After the upper cover 13 is closed, the first air gathering body 70 is integrally formed. The first air gathering body 70 surrounds the air outlet 102. Correspondingly, a second air gathering body 80 is arranged on the back frame 20. The second air gathering body 80 surrounds the heat dissipation holes 50. The positions of the first air gathering body 70 and the second air gathering body 80 correspond to each other and thus form an air gathering area. Through the setting of the air gathering area, it can be used as a buffer section to reduce the wind speed, uniformly disperse the air flow and then discharge it through the heat dissipation holes, thereby further reducing the noise.

[0037] Herein, the first air gathering body 70 protrudes and is formed into a ring body. The second air gathering body 80 is formed by recessing on the back frame 20, and the two are in butt joint and plug-in fit.

[0038] It should be noted that the direction indicated by the arrow in the attached drawings is the direction of air flow.

[0039] Of course, corresponding electronic components can also be provided in the accommodation housing 10 to complete the power supply function for the tool, which are conventional accessories in the field and will not be further limited herein.

[0040] The examples, embodiments and specific forms shown in the present utility model have been shown and described in detail in the attached drawings and the foregoing description, and should also be considered illustrative rather than restrictive. The description of specific features in one embodiment does not mean that those specific features must be limited to that one embodiment. The features of one embodiment can be used in combination with the features of other embodiments, which can be understood by those of ordinary skill in the art, whether explicitly stated or not. Exemplary embodiments have been shown and described, and all changes and improvements fall within the spirit of the present utility model and are expected to be protected.

Claims

1. A heat dissipation structure for a battery pack, comprising a back frame (20) and a receiving housing (10) connected to the back frame (20), the back frame (20) being capable of being in contact and cooperation with the human back, and a battery body being provided in the receiving housing (10), characterized in that a fan (30) is provided in the receiving housing (10), the receiving housing (10) has an air inlet (101) and an air outlet (102), and the fan (30) sucks air from the air inlet (101) and discharges it from the air outlet (102); the back frame (20) is arranged on one side of the air outlet (102), a fluid splitter (40) and a plurality of heat dissipation holes (50) are provided on the back frame (20), the heat dissipation holes (50) are distributed around the fluid splitter (40), the position of the fluid splitter (40) corresponds to the position of the air outlet (102), and the fluid splitter (40) is used to split the air from the air outlet (102) to the heat dissipation holes (50).

2. The heat dissipation structure of a battery pack according to claim 1, characterized in that, An installation area (100) is provided in the receiving housing (10), the installation area (100) is used to accommodate the fan (30), the air outlet (102) is located at the end of the installation area (100) and communicates with the outside of the receiving housing (10); a switch (60) is provided on the receiving housing (10), and the switch (60) is used to control the opening and closing of the fan (30).

3. The heat dissipation structure of a battery pack according to claim 2, wherein, The air inlet (101) is located at the lower end of the receiving housing (10), and the air inlet (101) communicates with the installation area (100).

4. The heat dissipation structure of a battery pack according to claim 3, characterized in that, A first air gathering body (70) is provided on one side of the air outlet (102) of the receiving housing (10), and the first air gathering body (70) surrounds the air outlet (102).

5. The heat dissipation structure of a battery pack according to claim 4, characterized in that, A second air gathering body (80) is provided on the back frame (20), the second air gathering body (80) surrounds the heat dissipation holes (50), and the first air gathering body (70) and the second air gathering body (80) are in corresponding positions and form an air gathering area.

6. The heat dissipation structure of a battery pack according to claim 1, characterized in that, The fluid splitter (40) protrudes, and the fluid splitter (40) has a tendency to gradually shrink from the end close to the back frame (20) to the end away from the back frame (20), and there is a distance between the fluid splitter (40) and the air outlet (102).

7. The heat dissipation structure of a battery pack according to claim 4, characterized in that, The receiving housing (10) includes a front shell (11), a rear shell (12) and an upper cover (13), the front shell (11) and the rear shell (12) are combined to form a receiving main body, the installation area (100) is provided in the receiving main body, the battery body and the fan (30) are arranged in the receiving main body, and the upper cover (13) closes the upper end opening of the receiving main body.

8. The heat dissipation structure of a battery pack according to claim 7, characterized in that, The installation area (100) protrudes and is located in the middle of the receiving main body to form two battery body installation areas, the fan (30) is a vortex fan and the air inlet area of the fan (30) is in air path communication with both battery body installation areas, and the battery bodies are arranged in the battery body installation areas on both sides of the installation area (100).

9. The heat dissipation structure of a battery pack according to claim 7, characterized in that, The first air gathering body (70) is arranged on the same side of the rear shell (12) and the upper cover (13).

10. A battery pack, characterized in that, A heat dissipation structure including the battery pack according to any one of claims 1-9, wherein a strap (90) is provided on the backrest (20), and the strap (90) is for human body wearing.

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