New energy vehicle battery thermal management device

Abstract

The invention discloses a new energy vehicle battery thermal management device, which includes a heat exchange module, the heat exchange module is respectively connected to a compressor module and a condenser fan module, the compressor module is connected to the condenser fan module, the heat exchange module includes a plate heat exchanger, the plate heat exchanger is connected to a combination valve and a water pump integrated valve block, the combination valve is respectively connected to an electronic expansion valve, a temperature and pressure sensor, a dry liquid storage tank, and a pressure sensor, and the water pump integrated valve block is connected to an electronic water pump. The invention discloses a new energy vehicle battery thermal management device, which reduces the types and number of parts, has a high degree of integration, and is small in size, and solves the problem of a large number of parts and a low degree of integration existing in the new energy vehicle thermal management device.

Description

Technical Field

[0001] The present invention belongs to the technical field of new energy vehicles, and in particular relates to a battery thermal management device for new energy vehicles. Background Art

[0002] In today's increasingly mature environment of new energy vehicles, new energy vehicles have the advantages of energy saving, no pollution, high efficiency, low noise, etc., and are the ideal development direction in the future. New energy vehicles mainly rely on batteries as power sources, including multiple battery packs combined together. Battery packs often generate heat during operation, generating a lot of heat to increase the temperature inside the battery, affecting the normal use of the power battery, resulting in reduced battery endurance and service life, and causing abnormal charging and discharging of the combined battery pack, posing certain safety hazards.

[0003] In the prior art, the number and variety of parts of the thermal management device for new energy vehicles are large, and most of them are connected by hoses or hard pipes, with a large number of pipes. During the driving process of the vehicle, it is very easy for the heat pipe to be separated from the battery or the pipe joint to be loose due to the shaking or collision of the vehicle, and the hose is easy to leak. The heat cannot be effectively transferred and accumulates inside the vehicle body, which buries safety hazards and is not convenient for installation and maintenance. Summary of the invention

[0004] The purpose of the present invention is to provide a new energy vehicle battery thermal management device, which solves the problem of a large number and variety of components and a low degree of integration existing in the new energy vehicle thermal management device.

[0005] The technical solution adopted by the present invention is that the new energy vehicle battery thermal management device includes a heat exchange module, which is respectively connected to a compressor module and a condenser fan module, and the compressor module is connected to the condenser fan module. The heat exchange module includes a plate heat exchanger, and the plate heat exchanger is connected to a combination valve and a water pump integrated valve block. The combination valve is respectively connected to an electronic expansion valve, a temperature and pressure sensor, a dry liquid storage tank, and a pressure sensor, and the water pump integrated valve block is connected to an electronic water pump.

[0006] The present invention is also characterized in that: the combination valve is in a rectangular structure, a combination valve interface f is provided at one end of the combination valve along the length extension direction, the combination valve interface f is recessed inward, the combination valve interface f is connected to the electronic expansion valve, and a combination valve interface g is provided at the other end of the combination valve along the length extension direction, the combination valve interface g protrudes outward, a threaded hole is provided in the protrusion, and the combination valve interface g is connected to the temperature and pressure sensor through the threaded hole.

[0007] The positive surface of the combination valve is provided with a combination valve interface d and a combination valve interface e. The combination valve interface e is close to one end of the combination valve interface g. The combination valve interface d is convex outward and the combination valve interface e is concave inward. The combination valve interface d is connected to the inlet of the plate heat exchanger and the combination valve interface e is connected to the outlet of the plate heat exchanger.

[0008] A combination valve interface a is arranged on the side of the combination valve interface d away from the combination valve interface e, a combination valve interface b and a combination valve interface c are arranged on the lower surface of the combination valve, the combination valve interface b is close to one end of the combination valve interface f, the combination valve interface a located on the positive surface of the combination valve and the combination valve interface b on the lower surface of the combination valve are vertically connected, the combination valve interface c is connected to the combination valve interface f, the combination valve interface b is connected to the inlet of the dry liquid storage tank, and the combination valve interfaces c are all connected to the outlet of the dry liquid storage tank.

[0009] A combination valve interface i is arranged on the side of the combination valve interface a close to the combination valve interface f, the combination valve interface i is vertically connected to the combination valve interface c, the combination valve interface i is connected to the pressure sensor, the interior of the combination valve interface f is connected to the combination valve interface d through a step-shrinking inner diameter, a combination valve interface h is arranged on the upper surface of the combination valve, the combination valve interface h vertically penetrates the combination valve interface e, the combination valve interface e vertically penetrates the combination valve interface g, the combination valve interface h is connected to the compressor module inlet through the hose b, the compressor module outlet is connected to the condenser fan module inlet through the hose c, and the condenser fan module outlet is connected to the combination valve interface a through the hose a.

[0010] A valve block interface a is provided on the positive surface of the water pump integrated valve block, and the valve block interface a is connected to the electronic water pump. Valve block interface c, valve block interface e, and valve block interface f are arranged above the valve block interface a. The valve block interface c, valve block interface e, and valve block interface f are interconnected. The valve block interface e is connected to the outlet of the plate heat exchanger, the valve block interface f is connected to the inlet of the plate heat exchanger, and the valve block interface c is connected to the external water access port.

[0011] A valve block interface b is arranged on the bottom surface of the water pump integrated valve block, and the valve block interface b is connected to the external water channel interface. A valve block interface d is arranged on the surface of one side of the valve block interface f. The valve block interface a, the valve block interface b, the valve block interface c, the valve block interface d, the valve block interface e, and the valve block interface f are interconnected to form the main flow channel inside the water pump integrated valve block, and the valve block interface d is connected to the external expansion kettle.

[0012] Hose a is DN10 hose, hose b is DN20 hose, and hose c is DN12 hose.

[0013] The beneficial effects of the present invention are as follows: the thermal management device for the battery of a new energy vehicle of the present invention adjusts the temperature of the battery by the flow of liquid in the pipeline, dissipates the heat generated by the battery in a timely manner, keeps the temperature of the battery within a suitable range, and enables the battery to work normally. The thermal management device for the battery of a new energy vehicle of the present invention uses a combination valve and a water pump integrated valve block to integrate the components into a module, reduces the number of components, reduces the volume, facilitates installation and maintenance, effectively manages the thermal power of the battery, keeps the battery working within a suitable temperature range, and ensures that the battery has normal working performance and service life. The present invention has a compact structure and low use cost, and the new energy vehicle has good heat dissipation, low maintenance rate, and long service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the thermal management device for a new energy vehicle battery of the present invention;

[0015] Figure 2 This is a schematic diagram of the heat exchange module structure of the new energy vehicle battery thermal management device of the present invention;

[0016] Figure 3 This is a front view of the combined valve of the new energy vehicle battery thermal management device of the present invention;

[0017] Figure 4 This is a front cross-sectional view of a combination valve of a new energy vehicle battery thermal management device of the present invention;

[0018] Figure 5 1. It is a top view of the combined valve of the thermal management device for the battery of a new energy vehicle of the present invention;

[0019] Figure 6 It is a top sectional view of a combination valve of a new energy vehicle battery thermal management device of the present invention;

[0020] Figure 7 This is a schematic diagram of the structure of a water pump integrated valve block of a new energy vehicle battery thermal management device of the present invention;

[0021] Figure 8 This is the three-dimensional structural intention of the water pump integrated valve block of the new energy vehicle battery thermal management device of the present invention.

[0022] In the figure, 1. hose a, 2. heat exchange module, 3. hose b, 4 compressor module, 5. hose c, 6. condenser fan module, 7. electronic expansion valve, 8. combination valve, 8-1. combination valve interface a, 8-2. combination valve interface b, 8-3. combination valve interface c, 8-4. combination valve interface d, 8-5. combination valve interface e, 8-6. combination valve interface f, 8-7. combination valve interface g, 8-8. combination valve interface h, 8-9. combination valve interface i, 9. temperature and pressure sensor, 10. plate heat exchanger, 11. electronic water pump, 12. dry liquid storage tank, 13. pressure sensor, 14. water pump integrated valve block, 14-1. valve block interface a, 14-2. valve block interface b, 14-3. valve block interface c, 14-4. valve block interface d, 14-5. valve block interface e, 14-6. valve block interface f. DETAILED DESCRIPTION

[0023] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] The thermal management device of the new energy vehicle battery of the present invention has a structure as follows Figure 1As shown, it includes a heat exchange module 2, and the heat exchange module 2 is connected to a compressor module 4 and a condenser fan module 6 respectively, and the compressor module 4 is connected to the condenser fan module 6. Figure 2 As shown, the heat exchange module 2 includes a plate heat exchanger 10, the plate heat exchanger 10 is connected to a combination valve 8 and a water pump integrated valve block 14, the combination valve 8 is respectively connected to an electronic expansion valve 7, a temperature and pressure sensor 9, a dry liquid storage tank 12, and a pressure sensor 13, and the water pump integrated valve block 14 is connected to an electronic water pump 11.

[0025] The combined valve 8 is a rectangular parallelepiped structure. Figure 4 As shown, the combination valve 8 has a combination valve interface f8-6 at one end along the length extension direction, the combination valve interface f8-6 is recessed inward, and the combination valve interface f8-6 is connected to the electronic expansion valve 7, as shown in FIG. Figure 5 As shown, a combination valve interface g8-7 is provided at the other end of the combination valve 8 along the length extension direction. The combination valve interface g8-7 protrudes outward and a threaded hole is provided in the protrusion. The combination valve interface g8-7 is connected to the temperature and pressure sensor 9 through the threaded hole.

[0026] like Figure 3 As shown, a combination valve interface d8-4 and a combination valve interface e8-5 are provided on the positive surface of the combination valve 8. The combination valve interface e8-5 is close to one end of the combination valve interface g8-7. The combination valve interface d8-4 is convex outward, and the combination valve interface e8-5 is concave inward. The combination valve interface d8-4 is connected to the inlet of the plate heat exchanger 10, and the combination valve interface e8-5 is connected to the outlet of the plate heat exchanger 10. The combination valve interface a8-1 is provided on the side of the combination valve interface d8-4 away from the combination valve interface e8-5. A combination valve interface b8-2 and a combination valve interface c8-3 are provided on the lower surface of the combination valve 8. The combination valve interface b8-2 is close to one end of the combination valve interface f8-6, and is vertically connected between the combination valve interface a8-1 located on the positive surface of the combination valve 8 and the combination valve interface b8-2 on the lower surface of the combination valve 8. The combination valve interface c8-3 is connected to the combination valve interface f8-6, the combination valve interface b8-2 is connected to the inlet of the dry liquid storage tank 12, and the combination valve interface c8-3 is connected to the outlet of the dry liquid storage tank 12; Figure 6As shown, a combination valve interface i8-9 is arranged on the side of the combination valve interface a8-1 close to the combination valve interface f8-6, the combination valve interface i8-9 is vertically connected to the combination valve interface c8-3, the combination valve interface i8-9 is connected to the pressure sensor 13, the interior of the combination valve interface f8-6 is connected to the combination valve interface d8-4 through a step-shrinking inner diameter, a combination valve interface h8-8 is arranged on the upper surface of the combination valve 8, the combination valve interface h8-8 vertically penetrates the combination valve interface e8-5, the combination valve interface e8-5 vertically penetrates the combination valve interface g8-7, the combination valve interface h8-8 is connected to the inlet of the compressor module 4 through the hose b3, the outlet of the compressor module 4 is connected to the inlet of the condenser fan module 6 through the hose c5, and the outlet of the condenser fan module 6 is connected to the combination valve interface a8-1 through the hose a1; the design of the combination valve 8 omits the connector, reduces the volume, and has a high degree of integration.

[0027] A valve block interface a14-1 is provided on the positive surface of the water pump integrated valve block 14, and the valve block interface a14-1 is connected to the electronic water pump 11. Valve block interfaces c14-3, e14-5, and f14-6 are arranged above the valve block interface a14-1. The valve block interfaces c14-3, e14-5, and f14-6 are interconnected. The valve block interface e14-5 is connected to the outlet of the plate heat exchanger 10, the valve block interface f14-6 is connected to the inlet of the plate heat exchanger 10, and the valve block interface c14-3 is connected to the external water access port; the bottom surface of the water pump integrated valve block 14 A valve block interface b14-2 is provided, and the valve block interface b14-2 is connected to the external water channel interface. A valve block interface d14-4 is provided on one side surface of the valve block interface f14-6. The valve block interface a14-1, the valve block interface b14-2, the valve block interface c14-3, the valve block interface d14-4, the valve block interface e14-5, and the valve block interface f14-6 are interconnected to form the main flow channel inside the water pump integrated valve block 14. The valve block interface d14-4 is connected to the external expansion kettle to replenish water for the main flow channel of the water pump integrated valve block 14. The integrated design of the water pump integrated valve block 14 reduces the volume and the number of components.

[0028] In the embodiment, a corresponding number of valve block interfaces a14-1 are provided according to different numbers of electronic water pumps 11 as required, such as Figure 7 and Figure 8As shown, in this embodiment, four valve block interfaces a14-1 are opened to connect four electronic water pumps 11. In the embodiment, the corresponding number of valve block interfaces b14-2 is set according to the needs of multi-channel water channel interfaces. In this embodiment, the external water channel is set to 4-channel water, and four valve block interfaces b14-2 are correspondingly set; a valve block interface c14-3 is opened on the upper surface of the water pump integrated valve block 14, and the valve block interface c14-3 located on the upper surface of the water pump integrated valve block 14 is vertically connected to the valve block interface c14-3 located above the valve block interface a14-1, and the valve block interface c14-3 is connected to the external water channel access port, the external water channel is set to 4-channel water, and multi-channel water channel interfaces are set as needed. The hose a1 adopts a DN10 hose, the hose b3 adopts a DN20 hose, and the hose c5 adopts a DN12 hose.

[0029] The working principle of the thermal management device for new energy vehicle battery of the present invention is as follows: the compressor module 4 provides power for the flow of refrigerant; the condenser fan module 6 realizes the state conversion of the refrigerant from gaseous to liquid and the reduction of temperature; the electronic expansion valve 7 realizes the rapid atomization and volume expansion of the refrigerant; the combination valve 8 realizes the rapid connection between the dry liquid storage tank 12, the electronic expansion valve 7, the pressure sensor 13, the temperature and pressure sensor 9, and the plate heat exchanger 10; the plate heat exchanger 10 realizes the heat exchange between the refrigerant and water; the electronic water pump 11 provides power for the waterway; the dry liquid storage tank 12 realizes the storage and drying of the refrigerant; the water pump integrated valve block 14 realizes the integration of the water pump installation and the waterway flow channel, and reduces the volume. The present invention integrates the parts into modules, reduces the number of parts, and is simpler to install and maintain.

[0030] The working process of the thermal management device for new energy vehicle battery of the present invention is as follows: the compressor module 4 provides power for the refrigerant, so that the refrigerant changes from a high-temperature, low-pressure gaseous state to a high-temperature, high-pressure liquid state, and then enters the condenser fan module 6 through the hose c5, and changes the high-temperature, high-pressure liquid refrigerant into a low-temperature, high-pressure liquid refrigerant, and enters the heat exchange module 2 through the hose a1. In the heat exchange module 2, the low-temperature, high-pressure liquid refrigerant enters the interior of the combination valve 8 from the combination valve interface a8-1, and then enters the dry liquid storage tank 12 from the combination valve interface b8-2. After drying, it enters the interior of the combination valve 8 from the combination valve interface c8-3, passes through the expansion cavity of the electronic expansion valve 7, and changes its state to a low-temperature, low-pressure mist refrigerant, and enters the plate heat exchanger 10 through the internal flow channel through the combination valve interface d8-4. After completing the heat exchange, the refrigerant state changes to a high-temperature, low-pressure gaseous refrigerant, enters the interior of the combination valve 8 from the combination valve interface e8-5, and then flows out of the heat exchange module 2 from the combination valve interface h8-8. The refrigerant in the heat exchange module 2 is all an internal flow channel. Then it enters the compressor module 4 through the hose b3 and works in a cycle.

[0031] The electronic water pump 11 provides power for the water circuit, so that the external water circuit quickly enters the heat exchange module 2. The external water circuit enters the water pump integrated valve block 14 from the valve block interface c14-1, enters the plate heat exchanger 10 from the valve block interface f14-6 through the internal flow channel, and after heat exchange with the refrigerant, enters the water pump integrated valve block 14 from the valve block interface e14-5, passes through the internal flow channel, and flows out from the valve block interface b14-2 under the drive of the electronic water pump 11. In the heat exchange module 2, the water circuits are all internal flow channels.

[0032] The thermal management device for new energy vehicle batteries of the present invention modularizes multiple components and uses different hoses to achieve connections between modules, thereby reducing the number of parts. The electronic expansion valve 7, the temperature and pressure sensor 9, the plate heat exchanger 10, the dry liquid storage tank 12, and the pressure sensor 13 are quickly connected through the combination valve 8; the electronic water pump 11 is quickly connected to the plate heat exchanger 10 using the water pump integrated valve block 14. The integrated design of the present invention uses both the water channel and the refrigerant as internal flow channels, which reduces the volume, reduces the types and number of components, and has a high degree of integration.

Claims

1. A new energy vehicle battery thermal management device, characterized in that: The heat exchange module (2) comprises a heat exchange module (2), the heat exchange module (2) is respectively connected to a compressor module (4) and a condenser fan module (6), the compressor module (4) is connected to the condenser fan module (6), the heat exchange module (2) comprises a plate heat exchanger (10), the plate heat exchanger (10) is connected to a combination valve (8) and a water pump integrated valve block (14), the combination valve (8) is respectively connected to an electronic expansion valve (7), a temperature and pressure sensor (9), a dry liquid storage tank (12), and a pressure sensor (13), and the water pump integrated valve block (14) is connected to an electronic water pump (11); The combination valve (8) is in a rectangular parallelepiped structure. A combination valve interface f (8-6) is provided at one end of the combination valve (8) along the direction in which the length of the combination valve is extended. The combination valve interface f (8-6) is recessed inwardly. The combination valve interface f (8-6) is connected to the electronic expansion valve (7). A combination valve interface g (8-7) is provided at the other end of the combination valve (8) along the direction in which the length of the combination valve is extended. The combination valve interface g (8-7) is protruding outwardly. A threaded hole is provided in the protrusion. The combination valve interface g (8-7) is connected to the temperature and pressure sensor (9) through the threaded hole. The front surface of the combination valve (8) is provided with a combination valve interface d (8-4) and a combination valve interface e (8-5), the combination valve interface e (8-5) is close to one end of the combination valve interface g (8-7), the combination valve interface d (8-4) is convex outward, and the combination valve interface e (8-5) is concave inward, the combination valve interface d (8-4) is connected to the inlet of the plate heat exchanger (10), and the combination valve interface e (8-5) is connected to the outlet of the plate heat exchanger (10); The combination valve interface d (8-4) is provided with a combination valve interface a (8-1) on the side away from the combination valve interface e (8-5), and the combination valve interface b (8-2) and the combination valve interface c (8-3) are provided on the lower surface of the combination valve (8); the combination valve interface b (8-2) is close to one end of the combination valve interface f (8-6), and is vertically connected between the combination valve interface a (8-1) located on the positive surface of the combination valve (8) and the combination valve interface b (8-2) on the lower surface of the combination valve (8); the combination valve interface c (8-3) is connected to the combination valve interface f (8-6), the combination valve interface b (8-2) is connected to the inlet of the dry liquid storage tank (12), and the combination valve interface c (8-3) is connected to the outlet of the dry liquid storage tank (12); A combination valve interface i (8-9) is provided on a side of the combination valve interface a (8-1) close to the combination valve interface f (8-6), the combination valve interface i (8-9) is vertically connected to the combination valve interface c (8-3), the combination valve interface i (8-9) is connected to the pressure sensor (13), the interior of the combination valve interface f (8-6) is connected to the combination valve interface d (8-4) through a step-shrinking inner diameter, a combination valve interface h (8-8) is provided on the upper surface of the combination valve (8), the combination valve interface h (8-8) vertically penetrates the combination valve interface e (8-5), and the combination valve interface e (8-5) vertically penetrates the combination valve interface g (8-7); The combination valve interface h (8-8) is connected to the compressor module (4) inlet via a hose b (3), the compressor module (4) outlet is connected to the condenser fan module (6) inlet via a hose c (5), and the condenser fan module (6) outlet is connected to the combination valve interface a (8-1) via a hose a (1).

2. The new energy vehicle battery thermal management device according to claim 1, characterized in that: The water pump integrated valve block (14) has a valve block interface a (14-1) on the front surface, the valve block interface a (14-1) is connected to the electronic water pump (11), and a valve block interface c (14-3), a valve block interface e (14-5), and a valve block interface f (14-6) are arranged above the valve block interface a (14-1), the valve block interface c (14-3), the valve block interface e (14-5), and the valve block interface f (14-6) are interconnected, the valve block interface e (14-5) is connected to the outlet of the plate heat exchanger (10), the valve block interface f (14-6) is connected to the inlet of the plate heat exchanger (10), and the valve block interface c (14-3) is connected to the external water channel access port.

3. The new energy vehicle battery thermal management device according to claim 2, characterized in that: The bottom surface of the water pump integrated valve block (14) is provided with a valve block interface b (14-2), the valve block interface b (14-2) is connected to an external water channel interface, a valve block interface d (14-4) is provided on one side surface of the valve block interface f (14-6), the valve block interface a (14-1), the valve block interface b (14-2), the valve block interface c (14-3), the valve block interface d (14-4), the valve block interface e (14-5), and the valve block interface f (14-6) are interconnected to form a main flow channel inside the water pump integrated valve block (14), and the valve block interface d (14-4) is connected to an external expansion kettle.

4. The new energy vehicle battery thermal management device according to claim 1, characterized in that: The hose a (1) is a DN10 hose, the hose b (3) is a DN20 hose, and the hose c (5) is a DN12 hose.

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