New energy automobile battery pack heat dissipation patch

Abstract

The utility model discloses a new energy automobile battery pack heat dissipation patch which comprises a battery box, a cooling liquid cavity for cooling and heat dissipation of a battery pack by enabling cooling liquid to enter is formed in the inner wall of the battery box, and heat dissipation aluminum sheets for cooling and heat dissipation of the side face of the battery pack are arranged in the battery cavity of the battery box at equal intervals. The heat dissipation aluminum sheet plate and the inner cavity of the battery box are combined to form a battery assembly cavity, and the blade battery pack is separated by the heat dissipation aluminum sheet plate, so that a plurality of surfaces of the blade battery pack can be attached to the surface of the heat dissipation aluminum sheet plate and the inner bottom surface of the battery box; therefore, the cooling liquid entering the cooling liquid cavity from the liquid inlet pipe flows to the whole inner wall of the battery box for cooling and heat dissipation, and the cooling liquid flows to the cooling liquid channel cavities in the heat dissipation aluminum sheets, so that cooling and heat dissipation of the cooling liquid can be performed on a plurality of side surfaces of the blade battery pack; further, the effect of wrapping type overall heat dissipation of the multiple groups of blade battery packs in the battery box is achieved, and the heat dissipation efficiency of the blade battery packs can be improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of battery pack heat dissipation, and specifically relates to a heat dissipation patch for a battery pack of a new energy vehicle. Background Art

[0002] New energy vehicles refer to vehicles that use unconventional automotive fuels as a power source, integrate advanced technologies in vehicle power control and drive, and have advanced technical principles, new technologies, and new structures. New energy vehicles include pure electric vehicles, extended-range electric vehicles, hybrid vehicles, fuel cell electric vehicles, hydrogen engine vehicles, and other new energy vehicles. When existing new energy vehicle battery packs convert chemical energy into electrical energy, part of the chemical energy will be converted into internal energy, thereby generating a lot of heat. If new energy vehicles run for a long time and the generated heat cannot be quickly dissipated, it will affect the safety of the vehicle battery pack and easily cause a fire.

[0003] To this end, a new energy vehicle battery pack heat dissipation device with announcement number "CN212587655U" includes a shock-absorbing base plate, the shock-absorbing base plate is threaded with fixing bolts around it, the top of the shock-absorbing base plate is fixedly connected to a stabilizing frame, the surface of the stabilizing frame is fixedly connected to a ventilation wind frame, the surface of the ventilation wind frame is fixedly connected to a dust-proof net, a battery pack placement slot is opened in the middle of the stabilizing frame, a car battery pack is arranged inside the battery pack placement slot, a ventilation slot is opened on the surface of the ventilation wind frame, a rectangular slot is opened on the top of the stabilizing frame, and a heat dissipation device is fixedly connected to the top of the stabilizing frame through a fixing screw. The car battery pack can be stably placed through the shock-absorbing base plate and the stabilizing frame to prevent the car battery pack from shaking, which is more convenient and safe to use. Effective ventilation can be carried out through the dust-proof net and the rectangular slot, and dust can be prevented from entering the interior of the stabilizing frame. The heat generated by the car battery pack inside the stabilizing frame can be quickly dissipated through the heat dissipation device.

[0004] However, for the above-mentioned new energy vehicle battery pack heat dissipation equipment, although the heat generated by the vehicle battery pack inside the stabilization frame can be quickly dissipated through the heat dissipation device, which solves the problem that the existing new energy vehicle battery pack will generate a lot of heat during use, and when the generated heat cannot be quickly dissipated, it will affect the safety of the vehicle battery pack and easily cause a fire, there are still the following obvious defects during use: Since the battery pack is installed at the bottom of the vehicle, the heat dissipation device can only dissipate the heat at the end of the battery pack during the heat dissipation of the battery pack, and because the battery pack is composed of multiple groups combined with each other, it is impossible to dissipate the heat on one side of the battery pack combination, and thus the heat dissipation effect of the heat dissipation device on the battery pack is poor and cannot achieve the effect of comprehensive cooling and heat dissipation. Utility Model Content

[0005] The purpose of the utility model is to provide a heat dissipation patch for a new energy vehicle battery pack to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above purpose, the utility model provides the following technical solution: a heat dissipation patch for a new energy vehicle battery pack, comprising:

[0007] A battery box, wherein the inner wall of the battery box is provided with a cooling liquid cavity for allowing coolant to enter and dissipate heat for the battery pack, the battery cavity of the battery box is equidistantly provided with heat dissipation aluminum plates for cooling and dissipating heat for the sides of the battery pack, and one side of the outside of the battery box is symmetrically provided with a liquid inlet pipe and a liquid outlet pipe for circulating coolant in and out;

[0008] A battery box cover, wherein exhaust fans for discharging heat generated by batteries inside the battery box are evenly embedded at the ends of the battery box cover, and the battery box cover is mounted on the ends of the battery box by screws, and the ends of the battery box cover are provided with guide covers for guiding the discharged heat to both sides.

[0009] Preferably, the heat dissipation aluminum plates are evenly arranged inside the battery box to form a battery assembly cavity, and blade battery packs are installed inside the battery assembly cavity. The batteries inside the battery box can be separated by the heat dissipation aluminum plates to facilitate cooling and heat dissipation of the front of the blade battery pack.

[0010] Preferably, a cooling liquid channel cavity is provided inside the heat dissipation aluminum fin plate, the bottom end of the heat dissipation aluminum fin plate is connected to the cooling liquid cavity at the bottom of the inner wall of the battery box, and the two ends of the heat dissipation aluminum fin plate are connected to the two side walls of the battery box, so that the cooling liquid can enter each surface of the blade battery pack for cooling and heat dissipation.

[0011] Preferably, the interior of the cooling liquid chamber is evenly provided with reinforcing support pads for enhancing the overall strength of the battery box. The arrangement of the reinforcing support pads can make the battery box more stable and firm without affecting the safety of the blade battery pack in the battery box.

[0012] Preferably, side exhaust holes are provided on both sides of the air deflector and on both sides of the battery box cover, and dust-proof and breathable mesh plates are embedded and fixed in the side exhaust holes, so that the hot air sucked out by the cooling fan can be discharged to both sides through the side exhaust holes, avoiding the phenomenon that the upward discharge is reflected onto the battery pack due to obstructions at the bottom of the car.

[0013] Preferably, the liquid inlet pipe and the liquid outlet pipe arranged on one side of the battery box are connected with one side of the cooling liquid cavity, and the corresponding bottom sides of the liquid inlet pipe and the liquid outlet pipe are evenly provided with drainage holes that are connected with the cooling liquid cavity, so that the coolant inside the cooling liquid cavity can be drained cleanly to avoid residue when the coolant inside the cooling liquid cavity needs to be replaced.

[0014] Preferably, the battery box cover is evenly provided with insulating pads on one side corresponding to the interior of the battery box, which are in contact with and supported by the heat dissipation aluminum plate, so that after the battery box cover is closed on the battery box, there can be a certain protective space between the blade battery pack inside, which is conducive to the upward discharge of heat.

[0015] Compared with the prior art, the technical effects and advantages of the utility model are as follows: the heat dissipation patch of the battery pack of the new energy vehicle can form a battery assembly cavity by connecting the cooling liquid cavity arranged in the inner wall of the battery box with the cooling liquid channel cavity in the heat dissipation aluminum plate, so that the heat dissipation aluminum plate and the inner cavity of the battery box are combined to form a battery assembly cavity, and the blade battery pack is separated by the heat dissipation aluminum plate, so that multiple surfaces of the blade battery pack can be attached to the surface of the heat dissipation aluminum plate and the bottom surface of the battery box, so that the coolant entering the cooling liquid cavity from the liquid inlet pipe flows to the entire inner wall of the battery box for cooling and heat dissipation, and the coolant flows to the cooling liquid channel cavity inside the heat dissipation aluminum plate, and the coolant can be cooled and dissipated on multiple sides of the blade battery pack, thereby achieving the effect of wrapped overall heat dissipation of multiple groups of blade battery packs inside the battery box, and can speed up the heat dissipation efficiency of the blade battery pack, solving the problem that the battery pack is composed of multiple groups and cannot dissipate the combined side of the battery pack, thereby making the heat dissipation effect of the heat dissipation device on the battery pack poor and unable to achieve comprehensive cooling and heat dissipation.

[0016] Through the combined use of the air deflector on the battery box cover, the exhaust fan embedded in the surface of the battery box cover and the side exhaust holes arranged on the two sides of the air deflector, when the blade battery pack is in use to dissipate heat, the exhaust fan can be operated to absorb the heat inside the battery box and discharge it into the air deflector, and the heat in the air deflector is diverted from both sides of the battery box to the outside through the side exhaust holes arranged on both sides, thereby effectively dissipating the heat quickly and accelerating the cooling and heat dissipation of the blade battery pack in cooperation with the coolant, avoiding the phenomenon that the heat is discharged upward and reflected back to the inside of the battery box at the bottom of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model;

[0018] Figure 2 This is a schematic diagram of the main internal structure of the utility model;

[0019] Figure 3 It is a left view structural schematic diagram of the battery box of the utility model.

[0020] In the figure: 1. Battery box; 2. Cooling liquid cavity; 3. Heat dissipation aluminum plate; 4. Liquid inlet pipe; 5. Liquid outlet pipe; 6. Battery box cover; 7. Exhaust fan; 8. Air guide cover; 9. Battery assembly cavity; 10. Blade battery pack; 11. Cooling liquid channel cavity; 12. Reinforced support pad; 13. Side exhaust hole; 14. Drain hole; 15. Insulating pad. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0022] See also Figure 1-3 The utility model provides a technical solution: a heat dissipation patch for a new energy vehicle battery pack, comprising:

[0023] A battery box 1, wherein the inner wall of the battery box 1 is provided with a cooling liquid cavity 2 for allowing the coolant to enter and cool the battery pack, and the coolant is allowed to enter the inner walls of the four sides of the battery box 1 to produce the effect of cooling and dissipating the external surface of the blade battery pack 10, and the battery box 1 is made of aluminum alloy and has a heat conduction cooling and heat dissipation effect, and the battery cavity of the battery box 1 is equidistantly provided with heat dissipation aluminum sheet plates 3 for cooling and dissipating the side of the battery pack, and the heat dissipation aluminum sheet plates 3 can be attached to each side surface of multiple groups of blade battery packs 10 inside the battery box 1 to achieve the effect of rapid cooling and temperature reduction, and an external side surface of the battery box 1 is symmetrically provided with a liquid inlet pipe 4 and a liquid outlet pipe 5 for circulating the coolant in and out, and the liquid inlet pipe 4 can be connected to the box body and the pump body for storing the coolant, and the liquid outlet pipe 5 can circulate the coolant after cooling and dissipating the blade battery pack 10, so that the heat dissipation effect is further improved;

[0024] A battery box cover 6, the ends of which are evenly embedded with exhaust fans 7 for discharging heat generated by the batteries inside the battery box 1, the exhaust fans 7 can quickly discharge the heat absorbed by each blade battery pack 10 floating upward, and the battery box cover 6 is mounted on the end of the battery box 1 by screws, so that multiple groups of blade battery packs 10 inside the battery box 1 can be installed in a safe space, thereby enhancing the protection effect of the blade battery packs 10, and the ends of the battery box cover 6 are provided with a guide hood 8 for guiding the discharged heat to both sides, so that the heat extracted by the exhaust fan 7 is discharged to both sides of the battery box 1 by the guide hood 8, thereby reducing the heat reflux in the battery box 1.

[0025] The heat dissipation aluminum plate 3 is evenly arranged inside the battery box 1 to form a battery assembly cavity 9, which can be used to install a pair of blade battery packs 10 and independently cool and dissipate the heat with coolant. Blade battery packs 10 are installed inside the battery assembly cavity 9, and the wiring harness connected to the blade battery packs 10 is connected and passed through the threading hole set on one side of the battery box cover 6. A coolant channel cavity 11 is provided inside the heat dissipation aluminum plate 3, so that each surface of the blade battery pack 10 can be cooled and dissipated by the coolant, thereby improving the cooling and heat dissipation effect of the blade battery pack 10 and avoiding the high temperature phenomenon of the blade battery pack 10. The bottom end of the heat dissipation aluminum plate 3 is connected with the coolant cavity 2 at the bottom of the inner wall of the battery box 1, which can form a wrapped coolant heat dissipation for the blade battery pack 10, reducing the high temperature failure of the blade battery pack 10, and the two ends of the heat dissipation aluminum plate 3 are connected through the two side walls of the battery box 1, and the interior of the coolant cavity 2 is evenly provided with reinforcing support pads 12 for strengthening the overall strength of the battery box 1, which increases the overall strength of the battery box 1 and makes the battery box 1 more firm and stable.

[0026] Side exhaust holes 13 are provided on both sides of the air duct 8 and on both sides of the battery box cover 6, so that the extracted heat can be discharged to both sides to avoid the problem of heat backflow upward. A dust-proof and breathable mesh plate is embedded and fixed in the side exhaust holes 13 to prevent dust from entering the air duct 8. The liquid inlet pipe 4 and the liquid outlet pipe 5 arranged on one side of the battery box 1 are connected with one side of the cooling liquid chamber 2 to achieve comprehensive cooling and heat dissipation of the blade battery pack 10, and the corresponding bottom sides of the liquid inlet pipe 4 and the liquid outlet pipe 5 are evenly provided with drainage holes 14 that are connected with the cooling liquid chamber 2 to achieve front discharge and replacement of the cooling liquid, and a sealing bolt is sealed in the drainage hole 14. The battery box cover 6 is evenly provided with an insulating pad 15 that is in contact with and supported by the heat dissipation aluminum plate 3 on one side corresponding to the inside of the battery box 1, thereby reducing the contact between the battery box cover 6 and the upper end surface of the blade battery pack 10 and avoiding the phenomenon of battery circuit short circuit caused by contact friction during vehicle driving.

[0027] Specifically, when in use, the coolant first enters the cooling liquid chamber 2 inside the battery box 1 through the liquid inlet pipe 4, and the coolant flows to the entire battery box 1 to wrap the battery for cooling and heat dissipation, and then the water level of the coolant in the cooling liquid chamber 2 continues to rise, allowing the coolant to enter the cooling liquid channel chamber 11, and cool all the fitting surfaces of the blade battery pack 10 with the coolant, thereby achieving the effect of comprehensive cooling and heat dissipation of multiple blade battery packs 10 in the battery box, and the coolant after the blade battery is cooled is output through the liquid outlet pipe 5 and then processed and circulated back to the box for storing the coolant, so as to achieve the effect of cooling liquid recycling, and avoid the problem that the blade battery pack 10 cannot be cooled down in time due to high temperature and malfunctions, and at the same time, the exhaust fan 7 is used to extract the heat inside the battery box 1 and discharge it into the air duct 8 and through the side exhaust holes 13 set on both sides of the air duct 8, the heat is discharged in two directions on the left and right sides, thereby avoiding the phenomenon of heat discharge upward and generating backflow with the vehicle chassis, further improving the heat dissipation effect of the blade battery pack 10.

[0028] It should be noted that the coolant used in the battery pack is a mixture of water, ethylene glycol and propylene glycol as well as antioxidants, anti-corrosion agents, surfactants and other elements, and the coolant composition used in the battery pack may vary according to the battery cooling technology used by different manufacturers and models. Therefore, coolant is used as a cooling material for electric vehicles, hybrid vehicles and other battery systems in existing technologies. It plays a role in cooling and temperature regulation during battery operation, which can ensure the normal operation and life of the battery. At the same time, the coolant can reduce the battery temperature in a high temperature environment and increase the battery temperature in a low temperature environment. It helps maintain the battery within a suitable operating temperature range to avoid performance degradation and damage caused by overheating or overcooling.

[0029] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A heat dissipation patch for a new energy vehicle battery pack, characterized in that: include: A battery box (1), wherein the inner wall of the battery box (1) is provided with a cooling liquid cavity (2) for allowing cooling liquid to enter and dissipate heat for a battery pack, the battery cavity of the battery box (1) is provided with heat dissipation aluminum plates (3) for cooling and dissipating heat for the side of the battery pack at equal intervals, and an external side surface of the battery box (1) is symmetrically provided with a liquid inlet pipe (4) and a liquid outlet pipe (5) for circulating cooling liquid in and out; A battery box cover (6), wherein an exhaust fan (7) for discharging heat generated by batteries inside the battery box (1) is evenly embedded at the end of the battery box cover (6), and the battery box cover (6) is mounted on the end of the battery box (1) by means of screws, and a guide cover (8) for guiding the discharged heat to both sides is provided at the end of the battery box cover (6).

2. A heat dissipation patch for a new energy vehicle battery pack according to claim 1, characterized in that: The heat dissipation aluminum plates (3) are evenly arranged inside the battery box (1) to form a battery assembly cavity (9), and blade battery packs (10) are installed inside the battery assembly cavity (9).

3. A heat dissipation patch for a new energy vehicle battery pack according to claim 1, characterized in that: A cooling liquid channel cavity (11) is provided inside the heat dissipation aluminum plate (3), the bottom end of the heat dissipation aluminum plate (3) is connected to the cooling liquid cavity (2) at the bottom of the inner wall of the battery box (1), and the two ends of the heat dissipation aluminum plate (3) are connected to the two side walls of the battery box (1).

4. A heat dissipation patch for a new energy vehicle battery pack according to claim 1, characterized in that: The interior of the cooling liquid cavity (2) is evenly provided with reinforcing support pads (12) for reinforcing the overall strength of the battery box (1).

5. A heat dissipation patch for a new energy vehicle battery pack according to claim 1, characterized in that: Side exhaust holes (13) are provided on both sides of the air guide cover (8) and on the two side surfaces of the battery box cover (6), and dustproof and breathable mesh plates are embedded and fixed in the side exhaust holes (13).

6. A heat dissipation patch for a new energy vehicle battery pack according to claim 1, characterized in that: The liquid inlet pipe (4) and the liquid outlet pipe (5) arranged on one side of the battery box (1) are connected to one side of the cooling liquid chamber (2), and the corresponding bottom sides of the liquid inlet pipe (4) and the liquid outlet pipe (5) are evenly provided with drainage holes (14) that are connected to the cooling liquid chamber (2).

7. A heat dissipation patch for a new energy vehicle battery pack according to claim 1, characterized in that: One side of the battery box cover (6) corresponding to the interior of the battery box (1) is evenly provided with insulating pads (15) that are in contact with and support the heat dissipation aluminum plate (3).

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