Heat dissipation structure of battery pack

Abstract

The utility model relates to the technical field of battery packs, and discloses a heat dissipation structure of a battery pack, which comprises a battery pack side air port cover plate mounted in a side air port on the side of the battery pack, the battery pack side air port cover plate is wave-shaped, connecting fixing rods are arranged at two ends and the middle of the battery pack side air port cover plate, and the battery pack side air port cover plate is mounted in the side air port in an embedded manner. Side face connecting holes matched with the connecting fixing rods are formed in the side face air openings, and the ventilation grooves in the battery pack side face air opening cover plates are embedded into the side face air openings and communicate with the interior of the battery pack. The cover plate is additionally arranged at the tuyere, the cover plate is made into a hidden window structure, convection can be formed between the cover plate and the tuyere at the bottom, heat on the surface of the battery cell is taken out, the battery pack is cooled, rainwater or dust can be prevented from directly entering the battery pack, and the device is simple in structure, good in heat dissipation effect and attractive in appearance. The side air port cover plate of the battery pack is wave-shaped, one side of the air port cover plate is a ventilation groove, and the other side of the air port cover plate is a position fixing groove, so that the device is more convenient to install, smooth in ventilation and simpler in structure.

Description

Technical Field

[0001] The utility model relates to the field of battery packs, and in particular to a heat dissipation structure of a battery pack. Background Art

[0002] Currently, there are no vents on the sides of lithium battery packs, usually only at the bottom, which cannot form air convection. The heat on the surface of the battery cells inside the battery pack is difficult to be removed, and the heat dissipation is poor. Some battery packs have evenly spaced vents on the top and bottom, but the upper vents are blocked by the foot of the machine, and convection cannot be formed. The battery cells in the battery pack will heat up severely and cause problems.

[0003] The patent application with publication number CN 218769725U discloses a heat dissipation type electric tool lithium battery pack, including a battery pack shell, a heat dissipation frame is fixedly connected to the battery pack shell, the heat dissipation frame is a hollow structure, the heat dissipation frame is filled with a heat absorbing medium, a screw hole is provided on the upper end surface of the heat dissipation frame, the interior of the heat dissipation frame can be connected to the outside through the screw hole, a sealing bolt is threadedly connected in the screw hole, a sealing gasket is connected between the sealing bolt and the screw hole, fin plates are connected to both side walls of the heat dissipation frame, a pair of limit grooves are provided on both side walls of the heat dissipation frame, iron sheets are fixedly connected in the pair of limit grooves, a pair of fin plates are fixedly connected to magnet blocks matching the limit grooves, and the limit grooves are magnetically connected to the magnet blocks through the iron sheets.

[0004] The prior art dissipates heat by connecting fins to the outside of the battery pack, which has a complex structure, and after installation, the device becomes heavy and bulky, making it inconvenient to operate.

[0005] Therefore, a new technical solution is needed to solve the above technical problems. Utility Model Content

[0006] The utility model aims to provide a heat dissipation structure for a battery pack. A cover plate is added at the air outlet. The cover plate is made into a dark window structure to prevent rain or dust from directly entering the battery pack. At the same time, convection is formed with the air outlet at the bottom to bring out the heat on the surface of the battery cell and cool the battery pack. The device has a simple structure, good heat dissipation effect and beautiful appearance.

[0007] The technical solution adopted by the utility model is:

[0008] A heat dissipation structure for a battery pack includes a battery pack side vent cover installed in a side vent on a side of the battery pack, wherein the battery pack side vent cover is wavy in shape, with connecting fixing rods provided at both ends and in the middle, the battery pack side vent cover is inlaid and installed in the side vent, a side connecting hole is provided in the side vent to match the connecting fixing rod, and a ventilation groove on the battery pack side vent cover is embedded in the side vent to communicate with the interior of the battery pack.

[0009] By adopting the above structure, a side air vent is set on one side of the battery pack, and a side air vent cover of the battery pack is installed, which can form convection with the bottom air vent to bring out the heat on the surface of the battery cell and prevent rain or dust from directly entering the battery pack. The device has a simple structure, good heat dissipation effect and beautiful appearance.

[0010] Preferably, the raised notch on the side of the battery pack side vent cover plate close to the side vent is a ventilation slot, the outward groove between adjacent ventilation slots is a position fixing slot, the battery pack side vent cover plate is installed in the side vent, and the outside of the ventilation slot is the side vent of the battery pack upper cover.

[0011] By adopting the above structure, the air vent cover on the side of the battery pack is set to be wavy, with one side being a ventilation slot and the other side being a position fixing slot. The device is more convenient to install, the ventilation is smooth, and the structure is simpler.

[0012] Preferably, a plurality of position fixing rods are provided in the side air vents to form a snap-fit ​​fence in the side air vents.

[0013] By adopting the above structure, the side air vent cover of the battery pack can be easily embedded in the side air vent and fixed with the position fixing rod, so that the structure is more solid.

[0014] Preferably, the position fixing rod is embedded and connected with the position fixing groove on the side vent cover of the battery pack, and the connecting and fixing rod in the middle of the side vent cover of the battery pack is arranged in the position fixing groove and matches and snaps into the side connecting hole on the position fixing rod.

[0015] By adopting the above structure, the side vent cover of the battery pack is installed more firmly in the side vent, which prevents the side vent cover of the battery pack from falling off when the device is in use, and the structure is more stable.

[0016] Preferably, the outer surface of the position fixing groove on the side air vent cover of the battery pack is flush with the extended opening of the side air vent.

[0017] By adopting the above structure, the device structure is more beautiful.

[0018] Preferably, the battery pack includes a battery pack upper cover and a battery pack lower cover, and the side air vent is arranged on one side of the battery pack upper cover.

[0019] Preferably, a battery pack lower cover bottom vent is provided at the bottom of the battery pack lower cover.

[0020] By adopting the above structure, the side vents of the battery pack upper cover and the vents at the bottom of the battery pack lower cover form convection, which takes out the heat from the surface of the battery cell and cools the battery pack.

[0021] Compared with the prior art, the utility model has the following beneficial effects:

[0022] 1. The utility model device adds a cover plate at the air outlet. The cover plate is made into a dark window structure, which can form convection with the air outlet at the bottom, take out the heat on the surface of the battery cell, cool the battery pack, and prevent rain or dust from directly entering the battery pack. The device has a simple structure, good heat dissipation effect and beautiful appearance.

[0023] 2. The utility model device has a battery pack side vent cover plate in a wave shape, with one side being a ventilation slot and the other side being a position fixing slot, making the device installation more convenient, the ventilation smoother, and the structure more concise.

[0024] 3. The device of the utility model is provided with a position fixing rod in the side air vent, which is clamped with the side air vent cover of the battery pack, and the side air vent cover of the battery pack is provided with a connecting fixing rod connected to the side connecting hole. The side air vent cover of the battery pack is more firmly installed, which can prevent the side air vent cover of the battery pack from falling off when the device is used, and the structure is more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0026] Figure 1 It is a schematic diagram of the structure of the utility model;

[0027] Figure 2 This is a schematic diagram of the structure of the side vent of the utility model;

[0028] Figure 3 This is a schematic diagram of the structure of the air vent cover on the side of the battery pack of the utility model;

[0029] Figure 4 This is a schematic diagram of the structure of the side vent cover of the battery pack of the utility model in the battery pack;

[0030] Figure 5 It is a schematic diagram of the structure of the air vent at the bottom of the lower cover of the battery pack of the utility model.

[0031] Among them: 1. Battery pack upper cover; 2. Battery pack lower cover; 3. Side air vents; 4. Battery pack side air vent cover; 5. Battery pack bottom air vents; 6. Battery pack upper cover side air vents; 7. Side connecting holes; 8. Connecting fixing rod; 9. Position fixing rod; 10. Position fixing slot; 11. Ventilation slot. DETAILED DESCRIPTION

[0032] like Figure 1-5As shown, a heat dissipation structure of a battery pack includes a battery pack side vent cover plate 4 installed in a side vent 3 on the side of the battery pack. The battery pack side vent cover plate 4 is wavy, and connecting and fixing rods 8 are provided at both ends and the middle. The battery pack side vent cover plate 4 is embedded and installed in the side vent 3. The side vent 3 is provided with a side connection hole 7 matching the connecting and fixing rod 8. The ventilation groove 11 on the battery pack side vent cover plate 4 is embedded in the side vent 3 and communicates with the inside of the battery pack. The battery pack includes a battery pack upper cover 1 and a battery pack lower cover 2. The side vent 3 is provided on one side of the battery pack upper cover 1. The battery pack lower cover 2 is provided with a battery pack lower cover bottom vent 5. The device adds a battery pack side vent cover plate 4 at the side vent 3. The cover plate is made into a dark window structure, which can form convection with the bottom vent, take out the heat on the surface of the battery cell, cool the battery pack, and prevent rain or dust from directly entering the battery pack. The device has a simple structure, good heat dissipation effect, and beautiful appearance. The air vent cover plate 4 on the side of the battery pack is designed to be wavy in shape, with a ventilation slot 11 on one side and a position fixing slot 10 on the other side. The device is more convenient to install, has smooth ventilation, and has a simpler structure.

[0033] The raised notch on the side of the battery pack side vent cover plate 4 close to the side vent 3 is a ventilation slot 11, and the outward groove between adjacent ventilation slots 11 is a position fixing slot 10. The battery pack side vent cover plate 4 is installed in the side vent 3, and the outside of the ventilation slot 11 is the battery pack upper cover side vent 6. Multiple position fixing rods 9 are provided in the side vent 3 to form a clamping fence in the side vent 3. The position fixing rod 9 is inlaid and connected with the position fixing slot 10 on the battery pack side vent cover plate 4, and the connecting fixing rod 8 in the middle of the battery pack side vent cover plate 4 is provided in the position fixing slot 10, and is matched and clamped with the side connection hole 7 on the position fixing rod 9. The outer surface of the position fixing slot 10 on the battery pack side vent cover plate 4 is flush with the outer extension of the side vent 3. The device is provided with a position fixing rod 9 in the side air vent 3 to be clamped with the battery pack side air vent cover 4, and the battery pack side air vent cover 4 is provided with a connecting fixing rod 8 connected to the side connecting hole 7. The battery pack side air vent cover 4 is more firmly installed, which can prevent the battery pack side air vent cover 4 from falling off when the device is used, and the structure is more stable.

[0034] When the device is in use, the bottom of the battery pack lower cover 2 is the battery pack lower cover bottom vent 5, the side of the battery pack upper cover 1 is the side vent 3, the battery pack side vent cover 4 of the side vent 3 is a dark window structure, the battery pack upper cover side vent 6 and the battery pack lower cover bottom vent 5 form convection, which brings out the heat on the surface of the battery cell and cools the battery pack, while preventing rain or dust from directly entering the battery pack. The device has a simple structure, good heat dissipation effect and beautiful appearance.

[0035] The embodiments described above are merely descriptions of preferred implementation modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by those skilled in the art should be included in the protection scope determined by the claims of the present invention.

Claims

1. A heat dissipation structure of a battery pack, comprising a battery pack side vent cover installed in a side vent on a side of the battery pack, characterized in that: The battery pack side air vent cover is wavy in shape, with connecting and fixing rods at both ends and the middle. The battery pack side air vent cover is embedded in the side air vent, and side connecting holes are matched with the connecting and fixing rods in the side air vent. The ventilation grooves on the battery pack side air vent cover are embedded in the side air vent and connected with the inside of the battery pack.

2. The heat dissipation structure of a battery pack according to claim 1, characterized in that: The raised notch on the battery pack side vent cover plate close to the side vent is a ventilation slot, the outward groove between adjacent ventilation slots is a position fixing slot, the battery pack side vent cover plate is installed in the side vent, and the outside of the ventilation slot is the battery pack upper cover side vent.

3. The heat dissipation structure of a battery pack according to claim 2, characterized in that: A plurality of position fixing rods are arranged in the side air vents to form a clamping fence in the side air vents.

4. The heat dissipation structure of a battery pack according to claim 3, characterized in that: The position fixing rod is embedded and connected with the position fixing groove on the side vent cover of the battery pack. The connecting and fixing rod in the middle of the side vent cover of the battery pack is arranged in the position fixing groove and matches and snaps into the side connecting hole on the position fixing rod.

5. The heat dissipation structure of a battery pack according to claim 2, characterized in that: The outer surface of the position fixing groove on the side air vent cover of the battery pack is flush with the outer extension of the side air vent.

6. The heat dissipation structure of a battery pack according to claim 1, characterized in that: The battery pack includes a battery pack upper cover and a battery pack lower cover, and the side air vent is arranged on one side of the battery pack upper cover.

7. The heat dissipation structure of a battery pack according to claim 6, characterized in that: The bottom of the battery pack lower cover is provided with a battery pack lower cover bottom vent.

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