Electric vehicle battery cooling device

Abstract

An electric vehicle battery cooling device effectively solves the problem that an existing cooling mode of an electric vehicle battery is poor in cooling effect. Comprising a battery bin with an upward opening, a battery is placed in the battery bin, a rectangular containing groove is formed in the lower side in the battery bin, an annular cooling groove is formed in the battery bin, a piston cylinder with a backward opening is arranged on the right side in the containing groove in the front-back axial direction, and a piston plate capable of moving front and back is coaxially arranged in the piston cylinder; bent cooling pipes are arranged at the left end and the right end of the front side of the piston cylinder respectively, a plurality of heat dissipation fins evenly distributed in the front-back direction are arranged on the cooling pipes, liquid suction pipes inserted into the cooling grooves are arranged at the left ends of the cooling pipes, and liquid outlet pipes inserted into the cooling grooves are arranged at the right ends of the cooling pipes; the device is simple in structure, novel in conception, convenient to use and high in practicability.

Description

Technical Field

[0001] The utility model relates to the technical field of electric vehicle auxiliary equipment, in particular to an electric vehicle battery cooling device. Background Art

[0002] When the weather is hot or the electric vehicle is loaded, the electric vehicle battery will overheat due to the increase in external temperature and battery discharge. Due to the battery protection mechanism, short-term battery overheating will not have a great impact, but long-term battery overheating can easily shorten the battery life and even cause leakage and spontaneous combustion. Existing electric vehicle battery cooling systems are mostly air-cooled. During the driving of the electric vehicle, the outside wind enters the battery compartment to take away the heat generated by the battery, thereby achieving the purpose of cooling. However, this cooling method has defects: the cooling effect is not good, and it cannot effectively and quickly cool down the battery when the battery is highly loaded or the weather is hot, which can easily lead to accidents. Utility Model Content

[0003] In view of the above situation, in order to make up for the deficiencies of the prior art, the purpose of the present invention is to provide an electric vehicle battery cooling device, which effectively solves the problem of poor cooling effect of the existing cooling method of the electric vehicle battery.

[0004] The technical solution is as follows: the utility model comprises a battery compartment with an upward opening, in which batteries are placed, a rectangular receiving groove is provided on the lower side of the battery compartment, an annular cooling groove is provided in the battery compartment, a piston cylinder with a front-to-rear axial direction and an opening facing backward is provided on the right side of the receiving groove, a piston plate movable forward and backward is coaxially provided in the piston cylinder, curved cooling pipes are respectively provided at the left and right ends of the front side of the piston cylinder, a plurality of heat dissipation fins evenly distributed along the front-to-rear direction are provided on the cooling pipe, a liquid suction pipe inserted into the cooling groove is provided at the left end of the cooling pipe, and a liquid outlet pipe inserted into the cooling groove is provided at the right end of the cooling pipe; the piston plate is coaxially slidably connected with the piston cylinder, a connecting column is coaxially provided at the rear end of the piston plate, and the receiving groove is connected with the piston plate. A rotating tube with a front-to-rear axial direction and capable of rotation is arranged in the receiving groove, an annular guide groove is provided in the rotating tube, the rear end of the connecting column is inserted into the rotating tube and a guide column inserted into the guide groove is coaxially arranged; a motor is arranged in the receiving groove and is located behind the rotating tube and the output shaft is coaxially fixedly connected with the rotating tube; a heat insulating pad is arranged on the lower side wall of the battery compartment; a plurality of fixing plates distributed in a rectangular shape are arranged at the lower end of the battery compartment; the cooling groove and cooling tube are filled with coolant; the cooling tubes on both sides of the piston cylinder are respectively provided with one-way valves opening to the left; a plurality of heat dissipation holes connected to the receiving groove are opened at the lower end of the battery compartment; the coolant is a liquid with high thermal conductivity and low corrosiveness.

[0005] Compared with the prior art, the beneficial effects of the utility model are: it can realize that the coolant can take away the heat generated by the battery during operation through heat conduction, and re-input the coolant with a higher temperature into the cooling tank after cooling, so that the cooling tank always maintains a low temperature, thereby realizing continuous cooling of the battery, preventing the battery from overheating and causing a shortened life, leakage, spontaneous combustion and other events, and ensuring the safety of the battery. The heat dissipation holes can dissipate the heat in the receiving tank to prevent the temperature in the receiving tank from being too high, and the thermal insulation pad can prevent the heat generated at the bottom of the battery from entering the receiving tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 It is the main axonometric drawing of the utility model.

[0007] Figure 2 It is a full-section main axonometric drawing of the utility model.

[0008] Figure 3 It is a full-section top view axonometric drawing of the utility model.

[0009] Figure 4 It is a full-section bottom-up axonometric drawing of the utility model.

[0010] Figure 5 It is a perspective axonometric drawing of the transfer tube of the utility model. DETAILED DESCRIPTION

[0011] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings.

[0012] Depend on Figures 1 to 5 The battery compartment 1 includes a battery compartment 1 with an opening facing upward, in which batteries are placed, a rectangular receiving groove 2 is provided on the lower side of the battery compartment 1, an annular cooling groove 3 is provided in the battery compartment 1, a piston cylinder 4 with a front-to-rear axial direction and an opening facing backward is provided on the right side of the receiving groove 2, a piston plate 5 which can move forward and backward is coaxially provided in the piston cylinder 4, curved cooling pipes 6 are respectively provided at the left and right ends of the front side of the piston cylinder 4, a plurality of heat dissipation fins 7 evenly distributed along the front-to-rear direction are provided on the cooling pipe 6, a liquid suction pipe 8 inserted into the cooling groove 3 is provided at the left end of the cooling pipe 6, and a liquid outlet pipe 9 inserted into the cooling groove 3 is provided at the right end of the cooling pipe 6.

[0013] In order to allow the piston plate 5 to slide back and forth, the piston plate 5 is coaxially slidably connected to the piston cylinder 4, a connecting column 10 is coaxially provided at the rear end of the piston plate 5, a rotating tube 11 which is axially rotatable in the front and rear directions is provided in the accommodating groove 2, an annular guide groove 12 is provided in the rotating tube 11, the rear end of the connecting column 10 is inserted into the rotating tube 11 and a guide column 13 which is inserted into the guide groove 12 is coaxially provided.

[0014] In order to rotate the rotating tube 11 , a motor is disposed in the receiving groove 2 and is located behind the rotating tube 11 , and the output shaft of the motor is coaxially and fixedly connected to the rotating tube 11 .

[0015] In order to facilitate heat insulation, a heat insulation pad is provided on the lower side wall of the battery compartment 1.

[0016] In order to facilitate fixing of the battery compartment 1 , a plurality of fixing plates 14 distributed in a rectangular shape are provided at the lower end of the battery compartment 1 .

[0017] For ease of use, the cooling tank 3 and the cooling pipe 6 are filled with coolant.

[0018] In order to facilitate the one-way flow of the coolant, the cooling pipes 6 on both sides of the piston cylinder 4 are respectively provided with a one-way valve 15 with its opening facing left.

[0019] In order to facilitate heat dissipation, a plurality of heat dissipation holes 16 communicating with the receiving slots 2 are provided at the lower end of the battery compartment 1 .

[0020] For ease of use, the coolant is a liquid with high thermal conductivity and low corrosivity.

[0021] When the utility model is in use, the battery compartment 1 is first fixed to the battery storage part of the electric vehicle by screws, etc., and then the battery is placed in the battery compartment 1 and connected to the battery, and then the motor is connected to the battery at the same time, and the motor is turned on at this time, and the motor drives the rotating tube 11 to start rotating, and the rotating tube 11 drives the guide groove 12 therein to rotate, and then drives the connecting column 10 to move backward through the guide column 13, and the connecting column 10 drives the piston plate 5 to move backward, and the piston plate 5 moves backward in the piston cylinder 4 through the right side suction pipe 8 and the right side cooling pipe 6 to suck the coolant into the piston cylinder 4. At this time, the one-way valve 15 on the left can prevent the coolant in the left cooling pipe 6 from being sucked into the piston cylinder 4, and the motor continues to rotate. When the rotating tube 11 rotates a certain angle, the guide column 13 is located at the guide column 13. To the front of the groove 12, and then the rotating tube 11 continues to rotate, and starts to drive the guide column 13 to move backward in the guide groove 12, and then drives the piston plate 5 to move backward through the connecting column 10, and squeezes the hot coolant sucked into the piston cylinder 4 into the cooling pipe 6 on the left, and squeezes the coolant with a lower temperature originally in the cooling pipe 6 on the left into the cooling groove 3 through the liquid outlet pipe 9, so that the temperature of the overall coolant in the cooling groove 3 is reduced, and the heat generated around the battery is taken away by heat conduction. At the same time, the one-way valve 15 on the right can prevent the hot coolant in the piston cylinder 4 from being re-injected into the cooling groove 3. At this time, the coolant in the cooling pipe 6 on the left dissipates the heat through the heat dissipation fins 7, reduces the temperature of the coolant, and then dissipates the heat through the heat dissipation holes 16;

[0022] At this time, the guide column 13 is located at the rearmost part of the guide wiper, and the motor continues to rotate, driving the guide column 13 to move backward in the guide groove 12 again, and driving the piston plate 5 to move forward in the piston cylinder 4 again through the connecting column 10, and sucking the coolant with a higher temperature in the cooling groove 3 into the piston cylinder 4 through the suction pipe 8 again, and injecting the coolant with a high temperature into the cooling pipe 6 on the left side again, and then re-injecting the coolant that has been cooled in the previous cycle into the cooling groove 3, and lowering the overall temperature in the cooling groove 3 again, taking away the heat generated by the battery, achieving the purpose of cooling the battery, and preventing the battery from being overheated and resulting in shortened life and leakage. The occurrence of this is repeated, and the motor keeps rotating. The coolant in the cooling tank 3 replaces the heat generated by the battery into the coolant through heat conduction, and then the piston cylinder 4 transfers the higher temperature cooling to the cooling tube 6 on the left, and the heat dissipation fins 7 cool the higher temperature coolant to a low temperature. At the same time, the lower temperature coolant originally existing in the cooling tube 6 on the left is squeezed back into the cooling tank 3 to replenish the cold zone liquid in the cooling tank 3 and reduce the temperature. This is repeated, so that the coolant continues to take away the heat generated by the battery, so that the battery can continue to maintain a low temperature during use. After use, the motor can be turned off.

[0023] Compared with the prior art, the beneficial effects of the utility model are as follows: the battery compartment, cooling tank, cooling pipe, etc. provided can realize that the coolant can take away the heat generated by the battery during operation through heat conduction, and re-input the coolant with a higher temperature into the cooling tank after cooling, so that the cooling tank always maintains a low temperature, thereby realizing continuous cooling of the battery, preventing the battery from overheating and causing a shortened life, leakage, spontaneous combustion and other events, and ensuring the safety of the battery; the heat dissipation holes provided can realize the dissipation of the heat in the receiving tank to prevent the temperature in the receiving tank from being too high; the heat insulation pad provided can prevent the heat generated by the bottom of the battery from entering the receiving tank; the structure is simple, the concept is novel, it is easy to use and it is highly practical.

Claims

1. An electric vehicle battery cooling device, comprising a battery compartment (1) with an opening facing upward, characterized in that: A battery is placed in the battery compartment (1), a rectangular receiving groove (2) is provided at the lower side of the battery compartment (1), an annular cooling groove (3) is provided in the battery compartment (1), a piston cylinder (4) with a front-to-rear axial direction and an opening facing backward is provided on the right side of the receiving groove (2), a piston plate (5) movable forward and backward is coaxially provided in the piston cylinder (4), a curved cooling pipe (6) is provided at the left and right ends of the front side of the piston cylinder (4), a plurality of heat dissipation fins (7) evenly distributed in the front-to-rear direction are provided on the cooling pipe (6), a liquid suction pipe (8) inserted into the cooling groove (3) is provided at the left end of the cooling pipe (6), and a liquid outlet pipe (9) inserted into the cooling groove (3) is provided at the right end of the cooling pipe (6).

2. The electric vehicle battery cooling device according to claim 1, characterized in that: The piston plate (5) is coaxially slidably connected to the piston cylinder (4); a connecting column (10) is coaxially provided at the rear end of the piston plate (5); a rotating tube (11) is provided in the receiving groove (2) and is rotatable in the front-rear axial direction; an annular guide groove (12) is provided in the rotating tube (11); the rear end of the connecting column (10) is inserted into the rotating tube (11) and is coaxially provided with a guide column (13) inserted into the guide groove (12).

3. The electric vehicle battery cooling device according to claim 1, characterized in that: A motor is provided in the containing groove (2) and is located behind the rotating tube (11), and the output shaft is coaxially fixedly connected to the rotating tube (11).

4. The electric vehicle battery cooling device according to claim 1, characterized in that: A heat insulation pad is provided on the lower side wall of the battery compartment (1).

5. The electric vehicle battery cooling device according to claim 1, characterized in that: A plurality of fixing plates (14) distributed in a rectangular shape are provided at the lower end of the battery compartment (1).

6. The electric vehicle battery cooling device according to claim 1, characterized in that: The cooling tank (3) and the cooling pipe (6) are both filled with coolant.

7. The electric vehicle battery cooling device according to claim 1, characterized in that: One-way valves (15) with their openings facing left are respectively provided in the cooling pipes (6) on both sides of the piston cylinder (4).

8. The electric vehicle battery cooling device according to claim 1, characterized in that: The lower end of the battery compartment (1) is provided with a plurality of heat dissipation holes (16) which are in communication with the accommodating groove (2).

9. The electric vehicle battery cooling device according to claim 6, characterized in that: The coolant is a liquid with high thermal conductivity and low corrosivity.

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