New energy automobile battery box protection mechanism

Abstract

The utility model discloses a new energy automobile battery box protection mechanism, relates to the technical field of automobile battery boxes, and aims to solve the problems that a large amount of heat is generated in the charging and discharging process of a power battery of a new energy automobile, the heat is dissipated through air cooling and air convection, if the heat dissipation effect is poor, the temperature of the battery is increased, and the service life of the battery is prolonged. The performance and the service life of the battery are further influenced. An automobile base is arranged at the bottom of the new energy automobile, a chassis connecting rod is fixedly arranged below the automobile base, a battery box is installed below the automobile base, the battery box is connected with the chassis connecting rod through a damping mechanism, and a radiator is arranged at the bottom of the battery box. Fifteen batteries are arranged in the battery box in a rectangular mode, cooling liquid circulating pipes are fixedly attached to the upper surfaces of the batteries in a snake-shaped mode, and a circulating pump and a cooling liquid water tank are installed in the battery box.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery box protection device technical field, concretely is a new energy automobile battery box protection mechanism. BACKGROUND

[0002] Battery box is the protection part of power battery of electric vehicle, when the weight and size of battery module are determined, the factors considered in the design of battery box are more. The battery box is the bearing of battery module, and the battery module needs to be connected to the vehicle body through it. At the same time, since the power battery is generally installed in the lower part of the vehicle body, considering the working environment of the battery module, the battery box needs to have the protection function to the module, the waterproof and dustproof of the module and the corrosion of the road environment to the battery box should be considered, and the vibration and impact in the running process of the vehicle should be considered.

[0003] The prior art in the above has the following defects: the power battery of the new energy automobile generates a large amount of heat in the charging and discharging process, the battery pack is provided with a cooling fan at one end and a ventilation opening at the other end, the heat generated during the operation of the battery cell is taken away through the circulation of air in the gap between the battery cells, the cost is low, and the structure is relatively simple, but the heat dissipation efficiency is not as good as that of the liquid cooling system. Usually rely on the air conditioning cold air in the vehicle compartment, therefore, when using in hot summer, the air conditioning temperature needs to be adjusted properly, if the heat dissipation effect is poor, the battery temperature will be increased, and then the performance and service life of the battery will be affected, so we provide a new energy automobile battery box protection mechanism to solve the problems in the above. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a new energy automobile battery box protection mechanism to solve the problems that the power battery of the new energy automobile generates a large amount of heat in the charging and discharging process, and the heat is dissipated through air cooling and air convection, if the heat dissipation effect is poor, the battery temperature will be increased, and then the performance and service life of the battery will be affected.

[0005] In order to achieve the above purpose, the utility model provides the following technical scheme: a new energy automobile battery box protection mechanism, including battery box and new energy automobile, the bottom of new energy automobile is provided with automobile base, the bottom of automobile base is fixedly provided with chassis connecting rod, the bottom of automobile base is installed with battery box, the battery box is connected through damping mechanism between battery box and chassis connecting rod, the bottom of battery box is provided with radiator, the inside of battery box is provided with fifteen batteries, the upper surface of battery is fixedly pasted with cooling liquid circulating pipe arranged in serpentine, the inside of battery box is installed with circulating pump and cooling liquid tank.

[0006] Preferably, the heat sink is provided with a heat sink inlet pipe and a heat sink outlet pipe on both sides, and the heat sink inlet pipe and the heat sink outlet pipe enter the interior of the battery box through two battery box through-line openings on the side of the battery box.

[0007] Preferably, the upper half of the battery box is provided with an upper cover, and the lower half of the battery box is provided with a base, and the upper cover is fixedly connected with the base through an upper cover fixing screw.

[0008] Preferably, the battery is mounted with fifteen temperature sensors, and the phase-change material shell is provided with phase-change material in the interior, and the lower end of the phase-change material shell penetrates and extends to the outside of the base and is attached to the heat sink, and the phase-change material shell is fixedly connected with the base through a heat sink connecting screw.

[0009] Preferably, the circulating pump is located on one side of the cooling liquid tank, the water outlet end of the cooling liquid tank is sealingly connected with the water inlet end of the circulating pump through a water tank outlet pipe, the water outlet end of the circulating pump is sealingly provided with a circulating pump outlet pipe, the circulating pump outlet pipe is sealingly connected with the cooling liquid circulating pipe through a water inlet distributor, the water inlet end of the heat sink is sealingly provided with the cooling liquid circulating pipe, the other end of the cooling liquid circulating pipe is sealingly connected with the heat sink outlet pipe through a water outlet distributor, the water outlet end of the heat sink is sealingly connected with the cooling liquid tank through the heat sink inlet pipe, the interior of the battery box is provided with a controller, and the controller is electrically connected with the circulating pump.

[0010] Preferably, fourteen shock-absorbing mechanisms are arranged on the periphery of the battery box, the upper end of each shock-absorbing mechanism is provided with a first connecting port, the first connecting port is rotatably connected with a chassis connecting rod, and the lower end of each shock-absorbing mechanism is provided with a second connecting port, and the second connecting port is rotatably connected with the battery box.

[0011] Preferably, the lower end of the first connecting port is provided with a guide seat, the upper end of the second connecting port is fixedly provided with a star-shaped seat, and a spring and a working cylinder are arranged between the star-shaped seat and the guide seat, the spring is arranged on the outer side of the working cylinder, and the upper end and the lower end of the working cylinder are fixedly connected with the guide seat and the star-shaped seat, respectively.

[0012] Compared with the prior art, the utility model has the advantages that:

[0013] 1. The utility model discloses a radiator and matching heat dissipation system set at the bottom of battery box, temperature sensor real -time monitoring battery temperature to data transmission is given to controller, and the controller controls the circulating pump to open according to temperature data, and the working temperature of battery can be controlled in the setting range, when battery is in the process of charging or discharging, a large amount of heat will be produced. The controller controls the circulating pump to open, and the circulating pump extracts the coolant in the coolant water tank and injects into the circulating pump outlet pipe, and the coolant in the circulating pump outlet pipe is dispersed to the coolant circulation pipe end through the water inlet distributor, and the battery is close to the coolant circulation pipe and transmits heat to the coolant, and the coolant absorbs the heat produced by the battery in the circulation process, and its temperature rises. The coolant flows in the coolant circulation pipe, enters the radiator inlet pipe through the water outlet distributor, and the radiator inlet pipe introduces the hot coolant into the radiator for heat dissipation treatment. When the hot coolant flows in the radiator, the heat is transmitted to the air outside the radiator through the water pipe and fin. When the air passes through the radiator, absorbs heat and carries away, completes the heat dissipation process. The cooled coolant enters the coolant water tank through the radiator outlet pipe, and the temperature of the coolant in the coolant water tank is reduced and then enters the circulating pump through the water tank outlet pipe, and the next cycle of heat dissipation is carried out. The battery is close to the phase change material shell below, and a layer of thermal interface material is smeared between the phase change material shell and the surface of the battery. These materials can fill the small gap between the module and the battery, reduce the thermal resistance and improve the heat conduction efficiency. The phase change material in the phase change material shell can change phase according to temperature change, thereby absorbing or releasing heat, further assisting heat dissipation. When the phase change material reaches its phase change temperature, it will change from solid to liquid and absorb a large amount of heat. The phase change material shell is located above the radiator, and the phase change material shell transmits the absorbed heat to the radiator through heat conduction, thereby realizing auxiliary cooling of the battery. The circulation of the coolant, the phase change material and the radiator improves the heat dissipation efficiency.

[0014] 2.The utility model discloses a shock -absorbing structure set between the bottom plate connecting rod and battery box, and the detailed structure design of shock -absorbing structure is provided with first connecting port on the upper end of shock -absorbing structure, and first connecting port is connected with bottom plate connecting rod, and the lower of first connecting port is installed with guide seat, and the lower of guide seat is installed with spring and working jar, and spring is installed on the outside of working jar, and the inside of working jar is movably installed with piston rod, and the lower side of piston rod is installed with star seat, and the lower of star seat is installed with second connecting port, and second connecting port is connected with battery box, when the vehicle is running on uneven road surface, shock -absorbing structure can reduce the vibration and impact that battery box receives. The vibration and impact force produced by uneven road surface act on the bottom plate connecting rod, and the bottom plate connecting rod transmits the vibration to first connecting port and guide seat, and guide seat transmits the vibration to working jar, and working jar will move along with the up-and-down bouncing of wheel, and lead to the repeated flow of oil in the chamber on both sides of piston, and the oil will be hindered by throttle hole and valve in the flow process, thereby generating damping force. The damping force will consume vibration energy and convert it into heat energy, and finally dissipate to the atmosphere, and at the same time, spring alleviates the impact through its own deformation and elastic force, thereby further reducing the vibration transmitted to battery box. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the side view of the utility model;

[0016] Figure 2 It is the bottom view of the utility model;

[0017] Figure 3 It is the internal structure diagram of the base of the utility model;

[0018] Figure 4 It is the connection relation diagram of battery and cooling liquid circulation pipe in the utility model;

[0019] Figure 5 It is the internal structure diagram of battery box of the utility model;

[0020] Figure 6 It is the structure schematic diagram of shock -absorbing structure of the utility model.

[0021] In the figure: 1, battery box; 2, damping structure; 3, radiator; 4, chassis connecting rod; 5, radiator connecting screw; 6, radiator outlet pipe; 7, radiator inlet pipe; 8, battery; 9, circulating pump; 10, coolant tank; 11, coolant circulation pipe; 12, water tank outlet pipe; 13, circulating pump outlet pipe; 14, battery box wire port; 15, first connecting port; 16, spring; 17, working cylinder; 18, second connecting port; 19, star seat; 20, base; 21, guide seat; 22, water outlet distributor; 23, water inlet distributor; 24, new energy vehicle; 25, vehicle base; 26, phase change material shell; 27, phase change material; 28, temperature sensor; 29, upper cover fixing screw; 30, upper cover; 31, controller. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0023] Please refer to Figures 1-6 An embodiment provided by the utility model: a new energy vehicle battery box protection mechanism, comprising a battery box 1 and a new energy vehicle 24, the bottom of the new energy vehicle 24 is provided with a vehicle base 25, the lower portion of the vehicle base 25 is fixedly provided with a chassis connecting rod 4, the lower portion of the vehicle base 25 is installed with the battery box 1, the battery box 1 and the chassis connecting rod 4 are connected through a damping mechanism 2, the bottom of the battery box 1 is provided with a radiator 3, the inside of the battery box 1 is provided with fifteen batteries 8 in a rectangular shape, the upper surface of the battery 8 is fixedly attached to a serpentine-shaped cooling liquid circulation pipe 11, and the inside of the battery box 1 is installed with a circulating pump 9 and a coolant tank 10.

[0024] The temperature sensor 28 monitors the temperature of the battery 8 in real time and transmits data to the controller 31, which controls the circulation pump to be turned on according to the temperature data, so that the working temperature of the battery 8 can be controlled within the set range. When the battery 8 is charging or discharging, a large amount of heat will be generated in the process. The controller 31 controls the circulation pump 9 to be turned on, and the circulation pump 9 draws the coolant in the coolant water tank 10 and injects it into the circulation pump outlet pipe 13. The coolant in the circulation pump outlet pipe 13 is dispersed to the coolant circulation pipe 11 through the water inlet distributor 23, and the battery 8 is in close contact with the coolant circulation pipe 11 to transfer heat to the coolant. The coolant absorbs the heat generated by the battery 8 during the circulation process, causing its own temperature to rise. The coolant flows in the coolant circulation pipe 11, enters the radiator inlet pipe 7 through the water outlet distributor 22, and the radiator inlet pipe 7 introduces the hot coolant into the radiator 3 for heat dissipation treatment. When the hot coolant flows in the radiator, it transfers heat to the air outside the radiator 3 through the water pipe and fins. When the air passes through the radiator 3, it absorbs heat and carries it away, completing the heat dissipation process. The cooled coolant enters the coolant water tank 10 through the radiator outlet pipe 6, and the temperature of the coolant in the coolant water tank 10 decreases and then enters the circulation pump 9 through the water tank outlet pipe 12 for the next round of circulation and heat dissipation. The battery 8 is in close contact with the phase-change material shell 26 below, and a layer of thermal interface material is applied between the phase-change material shell 26 and the surface of the battery 8. These materials can fill the small gap between the module and the battery 8, reduce thermal resistance, and improve heat conduction efficiency. The phase-change material 27 in the phase-change material shell 26 can change phase according to temperature changes, thereby absorbing or releasing heat, further assisting in heat dissipation. When the phase-change material 27 reaches its phase change temperature, it will change from a solid to a liquid, absorbing a large amount of heat. The phase-change material shell 26 is located above the radiator 3 and transmits the absorbed heat to the radiator 3 through heat conduction, thereby achieving auxiliary cooling of the battery 8. The circulation of the coolant, combined with the phase-change material and the radiator 3, improves the heat dissipation efficiency.

[0025] Please refer to Figures 2-5 The two sides of the radiator 3 are provided with a radiator outlet pipe 6 and a radiator inlet pipe 7, respectively. The radiator outlet pipe 6 and the radiator inlet pipe 7 enter the inside of the battery box 1 through two battery box through ports 14 on the side of the battery box 1. The upper half of the battery box 1 is provided with an upper cover 30, and the lower half of the battery box 1 is provided with a base 20. The upper cover 30 and the base 20 are fixedly connected by upper cover fixing screws 29.

[0026] Please refer to Figure 5The battery 8 is installed below the phase-changing material shell 26, and the battery 8 is installed with fifteen temperature sensors 28. The phase-changing material shell 26 is internally provided with phase-changing material 27. The lower end of the phase-changing material shell 26 penetrates and extends to the outside of the base 20 and is attached to the radiator 3. The phase-changing material shell 26 and the base 20 are fixedly connected through the radiator connecting screw 5.

[0027] Please refer to Figures 2-5 The circulating pump 9 is located on one side of the cooling liquid tank 10. The water outlet end of the cooling liquid tank 10 is sealingly connected with the water inlet end of the circulating pump 9 through the water tank outlet pipe 12. The water outlet end of the circulating pump 9 is sealingly installed with the circulating pump outlet pipe 13. The circulating pump outlet pipe 13 is sealingly connected with the cooling liquid circulating pipe 11 through the water inlet distributor 23. The water inlet end of the radiator 3 is sealingly installed with the cooling liquid circulating pipe 11. The other end of the cooling liquid circulating pipe 11 is sealingly connected with the radiator outlet pipe 6 through the water outlet distributor 22. The water outlet end of the radiator 3 is sealingly connected with the cooling liquid tank 10 through the radiator inlet pipe 7. The inside of the battery box 1 is installed with the controller 31. The controller 31 is electrically connected with the circulating pump 9.

[0028] Please refer to Figure 6 The fourteen shock-absorbing mechanisms 2 are respectively arranged around the battery box 1. The upper end of the shock-absorbing mechanism 2 is provided with the first connecting port 15, which is rotationally connected with the chassis connecting rod 4. The lower end of the shock-absorbing mechanism 2 is provided with the second connecting port 18, which is rotationally connected with the battery box 1. The lower end of the first connecting port 15 is installed with the guide seat 21. The upper end of the second connecting port 18 is fixedly provided with the star-shaped seat 19. The spring 16 and the working cylinder 17 are installed between the star-shaped seat 19 and the guide seat 21. The spring 16 is installed on the outside of the working cylinder 17. The upper end and the lower end of the working cylinder 17 are respectively fixedly connected with the guide seat 21 and the star-shaped seat 19.

[0029] Working principle: The temperature sensor 28 monitors the temperature of the battery 8 in real time and transmits the data to the controller 31, which controls the circulating pump to start according to the temperature data, so that the working temperature of the battery 8 can be controlled within the set range. When the battery 8 is charging or discharging, a large amount of heat will be generated in the process. The controller 31 controls the circulating pump 9 to start, and the circulating pump 9 draws the coolant in the coolant water tank 10 and injects it into the circulating pump outlet pipe 13. Through the water inlet distributor 23, the coolant in the circulating pump outlet pipe 13 is dispersed to the coolant circulating pipe 11, and the battery 8 is in close contact with the coolant circulating pipe 11 to transfer heat to the coolant. The coolant absorbs the heat generated by the battery 8 in the circulation process, causing its own temperature to rise. The coolant flows in the coolant circulating pipe 11, enters the radiator inlet pipe 7 through the water outlet distributor 22, and the radiator inlet pipe 7 introduces the hot coolant into the radiator 3 for heat dissipation. When the hot coolant flows in the radiator, it transfers heat to the air outside the radiator 3 through the water pipe and fins. When the air passes through the radiator 3, it absorbs heat and carries it away, completing the heat dissipation process. The cooled coolant enters the coolant water tank 10 through the radiator outlet pipe 6, and the temperature of the coolant in the coolant water tank 10 is reduced and then enters the circulating pump 9 through the water tank outlet pipe 12 for the next round of circulation and heat dissipation. The battery 8 is in close contact with the phase change material shell 26 below, and a layer of thermal interface material is applied between the phase change material shell 26 and the surface of the battery 8. These materials can fill the small gap between the module and the battery 8, reduce thermal resistance, and improve heat conduction efficiency. The phase change material 27 in the phase change material shell 26 can change phase according to temperature changes, thereby absorbing or releasing heat, further assisting in heat dissipation. When the phase change material 27 reaches its phase change temperature, it will change from a solid to a liquid, absorbing a large amount of heat. The phase change material 27 is arranged inside the phase change material shell 26, and the phase change material shell 26 is located above the radiator 3. The phase change material shell 26 transfers the absorbed heat to the radiator 3 through heat conduction, thereby achieving auxiliary cooling of the battery 8. The circulation of the coolant, combined with the phase change material and the radiator 3, improves the heat dissipation efficiency. When the vehicle is driving on uneven roads, the shock absorbing structure 2 can reduce the vibration and impact received by the battery box 1. The vibration and impact force generated by the uneven road acts on the chassis connecting rod 4, which transmits the vibration to the first connecting port 15 and the guide seat 21. The guide seat 21 transmits the vibration to the working cylinder 17, which moves with the up and down movement of the wheels, causing the oil to flow repeatedly in the chambers on both sides of the piston. The oil will be hindered by the throttle hole and valve during the flow process, thereby generating damping force. This damping force will consume vibration energy and convert it into heat energy, which is eventually dissipated into the atmosphere. At the same time, the spring absorbs the impact through its own deformation and elastic force, thereby further reducing the vibration transmitted to the battery box 1.

[0030] It is apparent for a person skilled in the art that the present application is not restricted to the details of the above exemplary embodiments, but that it can be implemented in other concrete forms without departing from the spirit or the essential characteristics of the present application. Therefore, the embodiments should be considered as exemplary only, and not limiting, the scope of the present application being defined by the appended claims rather than the above description, and all changes coming within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference signs in the claims should not be construed as limiting the claims concerned.

Claims

1. A new energy vehicle battery box protection mechanism, comprising a battery box (1) and a new energy vehicle (24), characterized in that: The bottom of the new energy vehicle (24) is provided with a vehicle base (25), the lower side of the vehicle base (25) is fixedly provided with a chassis connecting rod (4), the lower side of the vehicle base (25) is provided with a battery box (1), the battery box (1) and the chassis connecting rod (4) are connected through a damping mechanism (2), the bottom of the battery box (1) is provided with a radiator (3), the inside of the battery box (1) is provided with fifteen batteries (8), the upper surface of the battery (8) is fixedly attached to a serpentine cooling liquid circulating pipe (11), and the inside of the battery box (1) is provided with a circulating pump (9) and a cooling liquid tank (10).

2. The new energy vehicle battery box protection mechanism according to claim 1, characterized in that: The two sides of the radiator (3) are respectively provided with a radiator outlet pipe (6) and a radiator inlet pipe (7), and the radiator outlet pipe (6) and the radiator inlet pipe (7) enter the inside of the battery box (1) through two battery box wire ports (14) on the side of the battery box (1).

3. The new energy vehicle battery box protection mechanism according to claim 1, characterized in that: The upper half of the battery box (1) is provided with an upper cover (30), and the lower half of the battery box (1) is provided with a base (20), and the upper cover (30) and the base (20) are fixedly connected through upper cover fixing screws (29).

4. The new energy vehicle battery box protection mechanism according to claim 3, characterized in that: The battery (8) is attached to a phase change material shell (26) below, the battery (8) is provided with fifteen temperature sensors (28), the phase change material shell (26) is provided with a phase change material (27) inside, the lower end of the phase change material shell (26) penetrates and extends to the outside of the base (20) and is attached to the radiator (3), and the phase change material shell (26) and the base (20) are fixedly connected through radiator connecting screws (5).

5. The new energy vehicle battery box protection mechanism according to claim 3, characterized in that: The circulating pump (9) is located on one side of the cooling liquid tank (10), the water outlet end of the cooling liquid tank (10) and the water inlet end of the circulating pump (9) are sealingly connected through a water tank outlet pipe (12), the water inlet end of the circulating pump (9) is sealingly installed with a circulating pump outlet pipe (13), the circulating pump outlet pipe (13) is sealingly connected with the cooling liquid circulating pipe (11) through a water inlet distributor (23), the water inlet end of the radiator (3) is sealingly installed with the cooling liquid circulating pipe (11), the other end of the cooling liquid circulating pipe (11) is sealingly connected with the radiator outlet pipe (6) through a water outlet distributor (22), the water outlet end of the radiator (3) is sealingly connected with the cooling liquid tank (10) through the radiator inlet pipe (7), and the inside of the battery box (1) is provided with a controller (31), and the controller (31) is electrically connected with the circulating pump (9).

6. The new energy vehicle battery box protection mechanism according to claim 1, characterized in that: Fourteen damping mechanisms (2) are arranged around the battery box (1), the upper end of the damping mechanism (2) is provided with a first connecting port (15), the first connecting port (15) is rotatably connected with the chassis connecting rod (4), and the lower side of the damping mechanism (2) is provided with a second connecting port (18).

7. The new energy vehicle battery box protection mechanism according to claim 1, characterized in that: The lower part of the first connecting port (15) is provided with a guide seat (21), the upper part of the second connecting port (18) is fixedly provided with a star-shaped seat (19), a spring (16) and a working cylinder (17) are arranged between the star-shaped seat (19) and the guide seat (21), the spring (16) is arranged on the outer side of the working cylinder (17), and the upper end and the lower end of the working cylinder (17) are fixedly connected with the guide seat (21) and the star-shaped seat (19) respectively.

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