A direct cooling thermal management device for energy storage device

Abstract

The present invention belongs to the field of thermal management technology, and discloses a direct cooling thermal management device for an energy storage device, including a body, an upper cabin is provided inside the body, a lower cabin is provided at the bottom of the upper cabin, a cabinet door is provided on one side of the body, a heat dissipation fan is provided on one side of the cabinet door, a filter screen is provided on the front side of the upper cabin and on both sides of the upper cabin, a condenser is provided inside the upper cabin, a connecting pipe is fixedly installed on one side of the condenser, the connecting pipe passes through the upper cabin and extends to the inside of the lower cabin, a first connecting pipe is fixedly installed at one end of the connecting pipe, and a first delivery pipe is fixedly installed at the bottom of the other end, and a second connecting pipe is fixedly installed at one end of the first connecting pipe. By adopting a direct cooling design, the circulating water pump, heat exchanger, etc. required for the liquid cooling system are eliminated, and the volume, energy consumption, vibration and other problems of the liquid cooling system are reduced. The buried pipe cold plate design is adopted, and professional calculations are configured to ensure the pressure resistance and heat exchange efficiency of the battery cold plate.

Description

Technical Field

[0001] The present invention belongs to the technical field of thermal management, and in particular relates to a direct-cooling thermal management device for an energy storage device. Background Art

[0002] Thermal management refers to the management and control of the temperature of the total system, discrete components or their environment, with the purpose of maintaining the normal operation of each component or improving its performance or life. Currently, thermal management is usually required in fields such as electrochemical energy storage, and has a significant impact on the performance, life and safety of the energy storage system. At present, in the thermal management systems of various energy storage devices, for energy storage batteries, air cooling, liquid cooling or direct cooling can be used to manage the thermal state of the battery cells.

[0003] However, in the prior art, the refrigeration system must first transfer energy to the coolant, and then the coolant transfers the energy to the battery cell for heat exchange with the battery cell. The heat exchange is performed twice through three media, which greatly increases the energy consumption of the refrigeration system. Because the coolant acts as a "middleman", it must be equipped with a heat exchange mechanism between the refrigeration system and the battery cell, which in turn leads to an increase in the mechanism and the cost of the mechanism. The circulation of the coolant often requires a high-power water pump. The operation of the water pump will increase energy consumption, increase the space occupied by the mechanism, and increase the vibration of the machine, etc., which adds a lot of burden on both the construction cost and the use cost. Summary of the invention

[0004] The present invention aims at solving the problems in the prior art and proposes the following technical solutions:

[0005] A direct cooling thermal management device for an energy storage device comprises a body, an upper cabin is provided inside the body, a lower cabin is provided at the bottom of the upper cabin, a cabinet door is provided on one side of the body, a heat dissipation fan is provided on one side of the cabinet door, a filter screen is provided on the front side of the upper cabin and on the left and right sides of the upper cabin, a condenser is provided inside the upper cabin, a connecting pipe is fixedly installed on one side of the condenser, the connecting pipe passes through the upper cabin and extends to the inside of the lower cabin, a first connecting pipe is fixedly installed at one end of the connecting pipe, and a first conveying pipe is fixedly installed at the bottom of the other end, a second connecting pipe is fixedly installed at one end of the first connecting pipe, a temperature return device or a heater is fixedly installed in the middle of the second connecting pipe, one end of the second connecting pipe is fixedly installed with the first conveying pipe, and one end of the second connecting pipe is fixedly installed with A second delivery pipe, a compressor is fixedly installed at one end of the second delivery pipe, a third delivery pipe is arranged on one side of the compressor, an oil separator is arranged on one side of the compressor and at the bottom of the third delivery pipe, a fixed structure is arranged at the bottom of the oil separator, a four-way valve is arranged in the middle of the second delivery pipe and the third delivery pipe, an energy storage box is arranged on the rear side of the machine body, a plurality of battery plug-in boxes are arranged inside the energy storage box, batteries are arranged inside the plurality of battery plug-in boxes, first pipelines are arranged on both sides of the plurality of battery plug-in boxes, a second pipeline is arranged on one side of the first pipeline, and a third pipeline is arranged on the other side thereof, an expansion valve is arranged between the first pipeline and the third pipeline, the top of the first pipeline is fixedly installed with the bottom of the third delivery pipe, and the bottom end of the third pipeline is connected with the top of the first delivery pipe.

[0006] As a preferred embodiment of the above technical solution, the cooling fan is located on one side of the upper cabin, the filter on the front side of the upper cabin is located on the rear side of the cabinet door, a control box is arranged inside the lower cabin, a mounting plate is fixedly installed on the bottom of the compressor, the oil separator is located on the top of one end of the third delivery pipe, a connecting plate is fixedly installed on the bottom end of the oil separator, one side of the connecting plate is fixedly installed on one side of the compressor, and one side of the mounting plate is fixedly installed on the inner wall of the lower cabin, the first delivery pipe and the third delivery pipe extend through the machine body to the interior of the energy storage box, and the expansion valve corresponds one-to-one to multiple battery pack boxes.

[0007] As a preferred embodiment of the above technical solution, the oil separator includes a body, an air inlet pipe is arranged on the top of the body, an exhaust pipe is arranged on one side of the air inlet pipe, a rotating baffle is arranged inside the body, a rotating rod is fixedly installed on one side of the rotating baffle, and a rotating shaft is fixedly installed on the other side, one end of the rotating shaft extends through one side of the body to the outside of the body, a first motor is fixedly installed on one end of the rotating shaft, a filter plate is fixedly installed on the top of the rotating baffle, a filter element is arranged at the bottom of the rotating baffle, an output pipe is arranged at the bottom of the filter element, the output pipe and an oil drain pipe are arranged at the bottom of the body, and one end of the oil drain pipe is fixedly installed on the compressor.

[0008] As a preferred embodiment of the above technical solution, one end of the intake pipe and the exhaust pipe are fixedly installed on the bottom of the third delivery pipe, and the other end thereof extends into the interior of the device body to the top of the rotating baffle, one end of the rotating rod is rotatably connected to the inner wall of the device body, the filter plate and the rotating baffle are vertically arranged, the intake pipe is located on the left side of the filter plate, the exhaust pipe is located on the right side of the filter plate, a groove is opened inside the rotating baffle, a first electric push rod is fixedly installed on the inner wall of the groove, a movable plate is fixedly installed on one side of the first electric push rod, and the movable plate is located inside the groove and on the left side of the filter plate.

[0009] As a preferred embodiment of the above technical solution, a moving opening is opened on the right side of the filter plate and at the top of the rotating baffle, a rotating plate is arranged inside the moving opening, a movable rod is fixedly installed on the top of one end of the rotating plate, one end of the movable rod is rotatably connected to the inner wall of the moving opening, and a second motor is fixedly installed on the other end, one side of the second motor is fixedly installed to the inner wall of the moving opening away from the movable rod, a second electric push rod is fixedly installed on the bottom of the rotating plate, and a knocking plate is fixedly installed on the bottom of the second electric push rod.

[0010] As a preferred embodiment of the above technical solution, the fixed structure includes a mounting block, the top of the mounting block is fixedly mounted on the bottom of the connecting plate, two fixed blocks are fixedly mounted on the bottom of the mounting block, a movable groove is opened on the adjacent side of the fixed blocks, a first limiting plate is slidably connected to the inner wall of the bottom end of the movable groove, a first rack is fixedly mounted on the top of the first limiting plate, a gear is meshed on the top of the first rack, a moving rod is fixedly mounted in the middle of the gear, both ends of the moving rod are rotatably connected to the inner wall of the movable groove, a second rack is meshed on the top of the gear, a second limiting plate is fixedly mounted on the top of the second rack, both sides of the second limiting plate are slidably connected to the inner wall of the top end of the movable groove, compression springs are fixedly mounted on one side of the first limiting plate and the second limiting plate, and one end of the compression spring is fixedly mounted to the inner wall of the movable groove.

[0011] As a preferred embodiment of the above technical solution, the oil drain pipe runs through the middle of the mounting block, a sealing block is fixedly installed at one end of the oil drain pipe close to the compressor, a connecting spring is fixedly installed on one side of the sealing block, a connecting port is opened at the bottom of the fixed block close to the compressor, a movable plate is fixedly arranged inside the connecting port, the top of the movable plate is fixedly installed with the bottom of the first rack, the movable plate is slidably connected to the inner wall of the connecting port, and the connecting spring passes through the connecting port and is fixedly installed on one side of the movable plate.

[0012] As a preferred embodiment of the above technical solution, a first limit opening is provided at one end of the oil drain pipe near the mounting block, a second limit opening is provided at the bottom of the first limit opening, limit plates are fixedly installed on one side of the first limit opening and the second limit opening and located inside the oil drain pipe, an oil drain opening is provided in the middle of the limit plate, a moving block is arranged inside the oil drain opening on the side of the first limit opening, a control board is arranged inside the oil drain opening on the side of the second limit opening, and a third electric push rod is fixedly installed on one side of the moving block and one side of the control board.

[0013] As a preferred embodiment of the above technical solution, the first limit opening is located on the left side of the oil drain pipe, the second limit opening is located on the right side of the oil drain pipe, a plurality of electric telescopic rods are fixedly installed on the inner wall of the bottom of the moving block, a cleaning rod is fixedly installed on the top of the plurality of electric telescopic rods, an oil drain hole is opened at the bottom of the moving block, and the third electric push rod is respectively located on the left and right sides of the oil drain pipe, and one end thereof is fixedly installed on the inner wall of the mounting block.

[0014] The beneficial effects of the present invention are:

[0015] (1) The present invention adopts a direct cooling design, eliminating the circulating water pump, heat exchanger, etc. required by the liquid cooling system, reducing the volume, energy consumption, vibration and other problems of the liquid cooling system. It adopts an embedded pipe cold plate design and is equipped with professional calculations to ensure the pressure resistance and heat exchange efficiency of the battery cold plate;

[0016] (2) The present invention uses a four-way valve to switch between cooling and heating, and innovatively adopts coil-type electric auxiliary heating, so that when the system is heated under low-temperature conditions, the coil is used to consume cold energy, so as to reduce the defrosting shutdown hazards caused by the air-cooled condenser under low-temperature conditions. At the same time, the expansion valve is installed on the pipeline of the battery pack plug-in box, so that the flow of each battery pack plug-in box can be controlled in a targeted manner, ensuring that the flow and temperature of each battery pack plug-in box can be effectively guaranteed. The control method of different flow rates of different levels of pipelines is adopted to reduce the problem of uneven temperature between battery pack plug-ins, and the same-path structure design is adopted to ensure the same-path, same-resistance, and same-pressure design of the pipelines arranged in the tower battery structure;

[0017] (3) The present invention facilitates improving the oil return effect when the compressor is in use by using an oil separator, and at the same time, by fixing both ends of the oil drain pipe, the stability of the installation of the oil drain pipe and the compressor is improved, which is convenient for preventing the oil drain pipe from shaking due to improper installation, causing the oil return pipeline to malfunction and break, resulting in poor oil return, thereby causing insufficient lubrication inside the compressor, which may cause component wear and shorten the life of the compressor, making it inconvenient to perform heat exchange on the battery cold plate;

[0018] (4) The present invention drives the moving block or the control panel to move by means of the third electric push rod, and clears the impurities blocking the oil drain port by means of the electric telescopic rod and the cleaning rod inside the moving block. The flow rate of the return oil is controlled by means of the control panel, thereby facilitating the smooth return of the oil from the compressor, improving the use effect of the compressor, and facilitating improving the use effect of the direct cooling machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 What is shown is a schematic diagram of the overall structure of the embodiment;

[0020] Figure 2 What is shown is the structural diagram of the embodiment body;

[0021] Figure 3 What is shown is the structural diagram of the filter screen of the embodiment;

[0022] Figure 4 Shown is a diagram of the internal structure of the upper cabin of the embodiment;

[0023] Figure 5 Shown is a cross-sectional view of the embodiment body;

[0024] Figure 6 Shown is the internal structure diagram of the cabin in the embodiment;

[0025] Figure 7 Shown is a structural diagram of an oil separator of an embodiment;

[0026] Figure 8 Shown is a cross-sectional view of an oil separator of an embodiment;

[0027] Fig. 9 Shown is a structural diagram of a rotating baffle and a filter plate of an embodiment;

[0028] Fig.10 Shown is a structural diagram of a rotating baffle of an embodiment;

[0029] Fig.11 Shown is a structural diagram of a fixed structure of an embodiment;

[0030] Fig.12 What is shown is the internal structure diagram of the fixed block of the embodiment;

[0031] Fig.13 Shown is a diagram of the internal structure of the mounting block and the oil drain pipe of the embodiment.

[0032] In the figure: 1, machine body; 2, cabinet door; 3, cooling fan; 4, filter; 5, condenser; 6, connecting pipe; 7, first connecting pipe; 8, first delivery pipe; 9, second connecting pipe; 10, reheater; 11, second delivery pipe; 12, compressor; 13, third delivery pipe; 14, oil separator; 15, fixing structure; 151, mounting block; 152, fixing block; 153, first limiting plate; 154, first rack; 155, second rack; 156, second limiting plate; 157, gear; 16, four-way valve; 17, machine body; 18 , intake pipe; 19, exhaust pipe; 20, rotating baffle; 21, rotating rod; 22, rotating shaft; 23, first motor; 24, filter plate; 25, filter element; 26, output pipe; 27, oil drain pipe; 28, first electric push rod; 29, moving plate; 30, rotating plate; 31, movable rod; 32, second motor; 33, second electric push rod; 34, knocking plate; 35, sealing block; 36, movable plate; 37, limit plate; 38, moving block; 39, control board; 40, third electric push rod; 41, electric telescopic rod; 42, cleaning rod. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0034] The present invention provides a direct cooling thermal management device for an energy storage device, such as Figures 1 to 6 As shown, it includes a body 1, an upper cabin is opened inside the body 1, a lower cabin is arranged at the bottom of the upper cabin, a cabinet door 2 is arranged on one side of the body 1, a heat dissipation fan 3 is arranged on one side of the cabinet door 2, a filter screen 4 is arranged on the front side of the upper cabin and on the left and right sides of the upper cabin, a condenser 5 is arranged inside the upper cabin, a connecting pipe 6 is fixedly installed on one side of the condenser 5, the connecting pipe 6 passes through the upper cabin and extends to the inside of the lower cabin, a first connecting pipe 7 is fixedly installed at one end of the connecting pipe 6, and a first conveying pipe 8 is fixedly installed at the bottom of the other end, a second connecting pipe 9 is fixedly installed at one end of the first connecting pipe 7, a temperature return device 10 or a heater is fixedly installed in the middle of the second connecting pipe 9, one end of the second connecting pipe 9 is fixedly installed with the first conveying pipe 8, and one end of the second connecting pipe 9 is fixedly installed with a second conveying pipe 11, and the second A compressor 12 is fixedly installed at one end of the delivery pipe 11, a third delivery pipe 13 is arranged on one side of the compressor 12, an oil separator 14 is arranged on one side of the compressor 12 and at the bottom of the third delivery pipe 13, a fixed structure 15 is arranged at the bottom of the oil separator 14, a four-way valve 16 is arranged in the middle of the second delivery pipe 11 and the third delivery pipe 13, an energy storage box is arranged on the rear side of the body 1, a plurality of battery plug-in boxes are arranged inside the energy storage box, batteries are arranged inside the plurality of battery plug-in boxes, first pipelines are arranged on both sides of the plurality of battery plug-in boxes, a second pipeline is arranged on one side of the first pipeline, and a third pipeline is arranged on the other side thereof, an expansion valve is arranged between the first pipeline and the third pipeline, the top of the first pipeline is fixedly installed with the bottom of the third delivery pipe 13, and the bottom end of the third pipeline is connected to the top of the first delivery pipe 8.

[0035] The direct cooling machine provides temperature control (including cooling and heating) for the containerized energy storage system. The device is designed with Ino direct cooling technology, and ensures that the temperature of the battery cells of the containerized energy storage system is continuously controlled in an operating environment of -40℃ to +45℃ (frequency reduction above 45℃). The ARC-Z60KW direct cooling unit is designed with two modes according to changes in the operating environment. The ambient temperature is from low to high, which are the electric heating mode and the cooling mode. When the energy storage system is running and generates heat by itself, the compressor 12 is started to draw in the refrigerant gas and compress it into a high-temperature and high-pressure gas. The high-temperature and high-pressure gas is transported to the inside of the second connecting pipe 9 through the second delivery pipe 11. The high-temperature and high-pressure gas is transported to the inside of the second connecting pipe 9 through the temperature recovery device 10 to improve the refrigeration efficiency through heat exchange. The gas after heat exchange is transported to the inside of the condenser 5 through the connecting pipe 6, and comes into contact with the outside air. Then the heat dissipation fan 3 is started to dissipate heat and cool it into a high-pressure liquid. The high-pressure liquid enters the third pipeline through the connecting pipe 6 and the first delivery pipe 8. When the high-pressure liquid enters the expansion valve from the third pipeline, the pressure and temperature drop significantly due to the limiting effect of the expansion valve. The low-pressure and low-temperature refrigerant liquid enters the first pipeline and contacts the battery plug-in cold plate inside the battery pack plug-in box, absorbs heat and evaporates to become a low-pressure gas, thereby facilitating the control of the battery pack plug-in box cold plate temperature and cooling the battery pack plug-in box. When the ambient temperature is in the range of -40°C to +15°C, the direct cooling unit is powered off and parked for a long time, and the whole machine is at the lowest allowable temperature, the four-way valve 16 is switched so that one side of the battery pack socket The low-pressure gas inside the first pipeline is drawn into the compressor 12 again through the third delivery pipe 13, and the compressor 12 compresses it into high-temperature and high-pressure gas and enters the second delivery pipe 11. The gas flows from the second delivery pipe 11 to the second connecting pipe 9, and enters the condenser 5 through the second connecting pipe 9 and the connecting pipe 6. The high-temperature and high-pressure gas releases heat through heat dissipation and becomes liquid refrigerant. The liquid refrigerant is then transported by the connecting pipe, the first connecting pipe 7 and the second connecting pipe 9, and is heated and liquefied by a coil-type electric auxiliary heater. The coil is used to consume cold energy to reduce the defrosting shutdown hazards of the air-cooled condenser 5 under low-temperature conditions. The liquefied refrigerant The refrigerant enters the expansion valve through the first delivery pipe 8 and the third pipeline, and the pressure and temperature are reduced. The refrigerant with reduced pressure and temperature enters the third pipeline, exchanges heat with the air in the battery plug-in board cold plate, absorbs the heat of the air in the battery plug-in board cold plate, thereby increasing the temperature in the battery pack plug-in box to achieve the purpose of heating. When the compressor 12 is working, the oil separator 14 is used to facilitate compression and improve the oil return effect. The fixing structure 15 facilitates the stable installation of the oil separator 14 and the compressor 12 to prevent breakage and malfunction, resulting in poor oil return and insufficient lubrication inside the compressor 12, which may cause component wear and affect the life of the compressor 12.

[0036] like Figures 1 to 5As shown, the cooling fan 3 is located on one side of the upper cabin, the filter screen 4 on the front side of the upper cabin is located on the rear side of the cabinet door 2, a control box is arranged inside the lower cabin, a mounting plate is fixedly installed on the bottom of the compressor 12, the oil separator 14 is located on the top of one end of the third delivery pipe 13, a connecting plate is fixedly installed on the bottom end of the oil separator 14, one side of the connecting plate is fixedly installed on one side of the compressor 12, and one side of the mounting plate is fixedly installed on the inner wall of the lower cabin, the first delivery pipe 8 and the third delivery pipe 13 extend through the body 1 to the interior of the energy storage box, and the expansion valve corresponds one to one with multiple battery pack boxes.

[0037] Heat is dissipated through the heat dissipation fan 3 and the condenser 5, which facilitates air circulation and improves heat exchange efficiency. When the cooling air passes through the upper cabin, the air is filtered through the filter 4, and the control box is used to control the body 1 for cooling and heating, and the temperature of the battery core is controlled. The oil separator 14 is installed on the side of the compressor 12 through the connecting plate, which is convenient for returning oil to the compressor 12. The temperature control granularity is aligned by the expansion valve, and the precision flow control of one expansion valve for one battery pack box is adopted to maximize the temperature uniformity between the battery boxes.

[0038] like Figures 7 to 10 As shown, the oil separator 14 includes a body 17, an air inlet pipe 18 is arranged on the top of the body 17, an exhaust pipe 19 is arranged on one side of the air inlet pipe 18, a rotating baffle 20 is arranged inside the body 17, a rotating rod 21 is fixedly installed on one side of the rotating baffle 20, and a rotating shaft 22 is fixedly installed on the other side, one end of the rotating shaft 22 passes through one side of the body 17 and extends to the outside of the body 17, a first motor 23 is fixedly installed on one end of the rotating shaft 22, a filter plate 24 is fixedly installed on the top of the rotating baffle 20, a filter element 25 is arranged at the bottom of the rotating baffle 20, an output pipe 26 is arranged at the bottom of the filter element 25, the output pipe 26 and an oil drain pipe 27 are arranged at the bottom of the body 17, and one end of the oil drain pipe 27 is fixedly installed with the compressor 12.

[0039] The gas inside the third delivery pipe 13 is delivered to the inside of the device body 17 through the intake pipe 18, and the gas is allowed to pass through the filter plate 24 by rotating the baffle 20 to filter the oil in the gas. After the gas is filtered, it is delivered to the inside of the third delivery pipe 13 through the exhaust pipe 19. When the oil is filtered on the filter plate 24, the first motor 23 is started to drive the rotating shaft 22 and the rotating baffle 20 to rotate, so that the rotating rod 21 rotates along the inner wall of the device body 17, and the rotating baffle 20 is rotated ninety degrees, so that the filter plate 24 is rotated to a horizontal direction, and the oil on the filter plate 24 drips downward, is filtered again by the filter element 25, and is delivered to the inside of the oil drain pipe 27 by the output pipe 26, so that the compressor 12 returns oil.

[0040] like Figures 7 to 10As shown, one end of the air inlet pipe 18 and the exhaust pipe 19 are fixedly installed on the bottom of the third delivery pipe 13, and the other end thereof extends to the inside of the device body 17 to the top of the rotating baffle 20, one end of the rotating rod 21 is rotatably connected to the inner wall of the device body 17, the filter plate 24 and the rotating baffle 20 are vertically arranged, the air inlet pipe 18 is located on the left side of the filter plate 24, the exhaust pipe 19 is located on the right side of the filter plate 24, a groove is opened inside the rotating baffle 20, a first electric push rod 28 is fixedly installed on the inner wall of the groove, a movable plate 29 is fixedly installed on one side of the first electric push rod 28, and the movable plate 29 is located inside the groove and on the left side of the filter plate 24.

[0041] When the rotating baffle 20 rotates to ninety degrees inside the body 17, the rotating baffle 20 rotates from a horizontal state to a vertical state, so that the first electric push rod 28 and the movable plate 29 inside the groove rotate to a horizontal state, and the oil filtered on the filter plate 24 drips onto the rotating baffle 20 along the filter plate 24. When the rotating baffle 20 rotates to a vertical state, the oil on the rotating baffle 20 drips downward into the filter element 25, and at the same time, the first electric push rod 28 inside the groove is started to push the movable plate 29 to move, so that the rotating baffle 20 vibrates, thereby improving the effect of oil dripping.

[0042] like Figures 9 and 10 As shown, a moving opening is opened on the right side of the filter plate 24 and at the top of the rotating baffle 20, and a rotating plate 30 is arranged inside the moving opening. A movable rod 31 is fixedly installed on the top of one end of the rotating plate 30, one end of the movable rod 31 is rotatably connected to the inner wall of the moving opening, and a second motor 32 is fixedly installed on the other end thereof, one side of the second motor 32 is fixedly installed to the inner wall of the moving opening away from the movable rod 31, a second electric push rod 33 is fixedly installed at the bottom of the rotating plate 30, and a knocking plate 34 is fixedly installed at the bottom of the second electric push rod 33.

[0043] When the rotating baffle 20 rotates to ninety degrees, the second motor 32 in the moving port on the right side of the filter plate 24 is started, so that the second motor 32 drives the movable rod 31 and the rotating plate 30 to rotate, so that the rotating plate 30 rotates to a state parallel to the filter plate 24, and at the same time, the second electric push rod 33 and the knocking plate 34 installed on one side of the rotating plate 30 rotate to a state perpendicular to the filter plate 24, and then the second electric push rod 33 is started to drive the knocking plate 34 to move toward the filter plate 24, so that the knocking plate 34 knocks on the filter plate 24, so as to vibrate the residual oil on the filter plate 24 and improve the oil return efficiency of the compressor 12.

[0044] like Figure 8 , Fig.11 , Fig.12As shown, the fixed structure 15 includes a mounting block 151, the top of the mounting block 151 is fixedly mounted on the bottom of the connecting plate, two fixed blocks 152 are fixedly mounted on the bottom of the mounting block 151, and a moving groove is opened on the adjacent side of the fixed blocks 152. A first limiting plate 153 is slidably connected to the inner wall of the bottom end of the moving groove, a first rack 154 is fixedly mounted on the top of the first limiting plate 153, a gear 157 is meshed on the top of the first rack 154, a moving rod is fixedly mounted in the middle of the gear 157, both ends of the moving rod are rotatably connected to the inner wall of the moving groove, a second rack 155 is meshed on the top of the gear 157, a second limiting plate 156 is fixedly mounted on the top of the second rack 155, both sides of the second limiting plate 156 are slidably connected to the inner wall of the top end of the moving groove, compression springs are fixedly mounted on one side of the first limiting plate 153 and the second limiting plate 156, and one end of the compression spring is fixedly mounted to the inner wall of the moving groove.

[0045] The mounting block 151 facilitates the installation of the fixing block 152. When the oil drain pipe 27 shakes near one end of the oil separator 14, the first limiting plate 153 moves toward the inside of the movable groove, compressing the compression spring. The first limiting plate 153 drives the first rack 154 to move, so that the gear 157 drives the movable rod to rotate along the inner wall of the movable groove, thereby driving the second rack 155 to drive the second limiting plate 156 to move toward the side of the oil drain pipe 27, so that the compression spring on one side of the second limiting plate 156 is stretched, so that the second limiting plate 156 limits the oil drain pipe 27, which facilitates the installation of one end of the oil drain pipe 27 and the oil separator 14, improves stability, facilitates the oil return of the compressor 12, and facilitates the use of the direct cooler.

[0046] like Figure 8 , Fig.11 , Fig.12 As shown, the oil drain pipe 27 runs through the middle of the mounting block 151, a sealing block 35 is fixedly mounted on one end of the oil drain pipe 27 close to the compressor 12, a connecting spring is fixedly mounted on one side of the sealing block 35, a connecting port is provided at the bottom of the fixed block 152 close to the compressor 12, a movable plate 36 is fixedly arranged inside the connecting port, the top of the movable plate 36 is fixedly mounted to the bottom of the first rack 154, the movable plate 36 is slidably connected to the inner wall of the connecting port, and the connecting spring passes through the connecting port and is fixedly mounted on one side of the movable plate 36.

[0047] The sealing block 35 facilitates the stable connection between one end of the oil drain pipe 27 and the compressor 12. When the first limiting plate 153 close to the sealing block 35 moves toward the inside of the movable groove, the movable plate 36 connected to its bottom moves toward the inside of the connecting port, thereby compressing the connecting spring between the movable plate 36 and the sealing block 35, so that the connecting spring presses the sealing block 35, thereby improving the sealing performance between one end of the oil drain pipe 27 and the compressor, and preventing the oil drain pipe 27 from being improperly installed, which may cause the oil drain pipe 27 to break and cause a malfunction, thereby affecting the use of the compressor 12 and thus affecting the direct cooler's control over the battery cell temperature.

[0048] like Figure 8 , Fig.12 , Fig.13 As shown, a first limiting opening is provided at one end of the oil drain pipe 27 close to the mounting block 151, a second limiting opening is provided at the bottom of the first limiting opening, a limiting plate 37 is fixedly installed on one side of the first limiting opening and the second limiting opening and located inside the oil drain pipe 27, an oil drain opening is provided in the middle of the limiting plate 37, a moving block 38 is provided inside the oil drain opening on one side of the first limiting opening, a control board 39 is provided inside the oil drain opening on one side of the second limiting opening, a third electric push rod 40 is fixedly installed on one side of the moving block 38 and one side of the control board 39, the first limiting opening is located on the left side of the oil drain pipe 27, and the second limiting opening is located on the right side of the oil drain pipe 27, a plurality of electric telescopic rods 41 are fixedly installed on the inner wall at the bottom of the moving block 38, a cleaning rod 42 is fixedly installed on the top of the plurality of electric telescopic rods 41, an oil drain hole is provided at the bottom of the moving block 38, the third electric push rod 40 is respectively located on the left and right sides of the oil drain pipe 27, and one end thereof is fixedly installed on the inner wall of the mounting block 151.

[0049] When the oil drain pipe 27 is clogged near one end of the oil separator 14, the electric telescopic rod 41 inside the moving block 38 is started to drive the cleaning rod 42 to move upward, so that one end of the oil drain pipe 27 is unblocked, and the unblocked impurities fall into the moving block 38 and are collected. At the same time, the oil drips downward through the oil drain hole onto the control plate 39 and the limit plate 37 at the bottom of the moving block 38. Then, the third electric push rod 40 on the left side of the oil drain pipe 27 inside the mounting block 151 is started to drive the moving block 38 to move, so that the moving block 38 passes through the first The limit opening is moved to one side of the oil drain pipe 27, exposing the middle part of the limit plate located above the inside of the oil drain pipe 27, allowing the oil to drip downwards, and then the third electric push rod 40 on the right side of the oil drain pipe 27 inside the mounting block 151 is started to drive the control plate 39 to move, so that the size of the oil drain opening in the middle part of the limit plate 37 below the moving block 38 is controlled, thereby facilitating the control of the oil drain speed of the oil drain pipe 27, thereby facilitating the smooth return of the oil from the compressor 12, improving the use effect of the compressor 12, and improving the use effect of the direct cooling machine.

[0050] Working principle: When the energy storage system is in use and generates heat, the compressor 12 is started to draw in the refrigerant gas and compress it into high-temperature and high-pressure gas. The high-temperature and high-pressure gas is transported to the inside of the second connecting pipe 9 through the second delivery pipe 11. The high-temperature and high-pressure gas is facilitated to improve the refrigeration efficiency through heat exchange through the temperature recovery device 10. The gas after heat exchange is transported to the inside of the condenser 5 through the connecting pipe 6 and contacts with the outside air. Then the heat dissipation fan 3 is started to dissipate heat and cool into high-pressure liquid. The high-pressure liquid enters the inside of the third pipeline through the connecting pipe 6 and the first delivery pipe 8. When the high-pressure liquid enters the expansion valve from the third pipeline, the pressure and temperature drop significantly due to the restriction of the expansion valve. The low-pressure and low-temperature refrigerant liquid enters the inside of the first pipeline and contacts with the battery plug-in cold plate inside the battery plug-in box, absorbs heat and evaporates, and becomes a low-pressure gas, thereby facilitating the control of the battery plug-in box cold plate temperature and facilitating the cooling of the battery plug-in box. When the ambient temperature is in the range of -40℃~+15℃, the direct cooling unit is powered off and long When the whole machine is parked for a period of time and is at the lowest permissible temperature, the four-way valve 16 is switched so that the low-pressure gas inside the first pipeline on the side of the battery pack socket is drawn into the compressor 12 again through the third delivery pipe 13, and the compressor 12 compresses it into high-temperature and high-pressure gas and enters the second delivery pipe 11. The gas flows from the second delivery pipe 11 to the second connecting pipe 9, and the high-temperature and high-pressure gas enters the condenser 5 through the second connecting pipe 9 and the connecting pipe 6. The heat is released by heat dissipation and becomes a liquid refrigerant. The liquid refrigerant is then transported by the connecting pipe, the first connecting pipe 7 and the second connecting pipe 9, and the coil-type electric auxiliary heater is used to heat and liquefy. The coil is used to consume cold energy to reduce the defrosting shutdown hazard of the air-cooled condenser 5 under low temperature conditions. The liquefied refrigerant enters the expansion valve through the first delivery pipe 8 and the third pipeline, and the pressure and temperature are reduced. The refrigerant with reduced pressure and temperature enters the third pipeline, exchanges heat with the air in the cold plate of the battery plug board, absorbs the heat of the air in the cold plate of the battery plug board, thereby increasing the temperature in the battery pack plug box and achieving the purpose of heating.

[0051] When the gas inside the third delivery pipe 13 is delivered to the inside of the device body 17 through the intake pipe 18, the gas is passed through the filter plate 24 by the rotating baffle 20 to filter the oil in the gas. After the gas is filtered, it is delivered to the inside of the third delivery pipe 13 by the exhaust pipe 19. When the oil is filtered on the filter plate 24, the first motor 23 is started to drive the rotating shaft 22 and the rotating baffle 20 to rotate, and the rotating baffle 20 is rotated ninety degrees. The rotating baffle 20 rotates from a horizontal state to a vertical state, so that the filter plate 24 rotates to a horizontal direction, so that the first electric push rod 28 and the movable plate 29 inside the groove rotate to a horizontal state, and the oil filtered on the filter plate 24 drips onto the rotating baffle 20 along the filter plate 24. When the rotating baffle 20 rotates to a vertical state, the first electric push rod 28 inside the groove is started at the same time to push the movable plate 29 to move, so that the rotating baffle 20 vibrates. The oil on the rotating baffle 20 drips downward, and the second motor 32 in the moving port on the right side of the filter plate 24 is started, so that the second motor 32 drives the movable rod 31 and the rotating plate 30 to rotate, so that the rotating plate 30 rotates to a state parallel to the filter plate 24, and at the same time, the second electric push rod 33 and the knocking plate 34 installed on one side of the rotating plate 30 rotate to a state perpendicular to the filter plate 24, and then the second electric push rod 33 is started to drive the knocking plate 34 to move in the direction of the filter plate 24, so that the knocking plate 34 knocks the filter plate 24, so that the residual oil on the filter plate 24 is vibrated, and the oil drips downward and is filtered again through the filter element 25, and is transported to the inside of the oil drain pipe 27 by the output pipe 26, and the moving block 38 and the control board 39 are driven to move by the third electric push rod 40, so as to make the oil drain pipe 27 unblocked, control the oil discharge speed of the oil drain pipe 27, and improve the oil return effect of the compressor 12.

[0052] When the oil drain pipe 27 shakes near one end of the oil separator 14, the first limiting plate 153 moves toward the inside of the moving groove, compressing the compression spring. The first limiting plate 153 drives the first rack 154 to move, so that the gear 157 drives the moving rod to rotate along the inner wall of the moving groove, thereby driving the second rack 155 to drive the second limiting plate 156 to move toward the side of the oil drain pipe 27, so that the compression spring on one side of the second limiting plate 156 is stretched, so that the second limiting plate 156 limits the oil drain pipe 27, which is convenient for improving the installation of one end of the oil drain pipe 27 and the oil separator 14, and improving stability. The sealing block 35 facilitates the stable connection between one end of the oil drain pipe 27 and the compressor 12. When the first limiting plate 153 close to the sealing block 35 moves toward the inside of the movable groove, the movable plate 36 connected to its bottom moves toward the inside of the connecting port, thereby compressing the connecting spring between the movable plate 36 and the sealing block 35, so that the connecting spring presses the sealing block 35, thereby improving the sealing performance between one end of the oil drain pipe 27 and the compressor, and preventing the oil drain pipe 27 from being improperly installed, which may cause the oil drain pipe 27 to break and cause a malfunction, thereby affecting the use of the compressor 12 and thus affecting the direct cooler's control over the battery cell temperature.

[0053] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them.

Claims

1. A direct cooling thermal management device for an energy storage device, comprising a body (1), characterized in that: An upper cabin is provided inside the machine body (1), a lower cabin is provided at the bottom of the upper cabin, a cabinet door (2) is provided on one side of the machine body (1), a heat dissipation fan (3) is provided on one side of the cabinet door (2), a filter screen (4) is provided on the front side of the upper cabin and on both sides of the upper cabin, a condenser (5) is provided inside the upper cabin, a connecting pipe (6) is fixedly installed on one side of the condenser (5), the connecting pipe (6) passes through the upper cabin and extends to the inside of the lower cabin, a first connecting pipe (7) is fixedly installed at one end of the connecting pipe (6), and a first conveying pipe (8) is fixedly installed at the bottom of the other end, a second connecting pipe (9) is fixedly installed at one end of the first connecting pipe (7), a temperature return device (10) or a heater is fixedly installed in the middle of the second connecting pipe (9), one end of the second connecting pipe (9) is fixedly installed with the first conveying pipe (8), and one end of the second connecting pipe (9) is fixedly installed with the second conveying pipe (11), A compressor (12) is fixedly mounted on one end of the second delivery pipe (11); a third delivery pipe (13) is arranged on one side of the compressor (12); an oil separator (14) is arranged on one side of the compressor (12) and located at the bottom of the third delivery pipe (13); a fixing structure (15) is arranged at the bottom of the oil separator (14); a four-way valve (16) is arranged in the middle of the second delivery pipe (11) and the third delivery pipe (13); an energy storage box is arranged on the rear side of the machine body (1); a plurality of battery pack plug-ins are arranged inside the energy storage box; batteries are arranged inside the plurality of battery pack plug-ins; first pipelines are arranged on both sides of the plurality of battery pack plug-ins; a second pipeline is arranged on one side of the first pipeline and a third pipeline is arranged on the other side; an expansion valve is arranged between the first pipeline and the third pipeline; the top of the first pipeline is fixedly mounted on the bottom of the third delivery pipe (13); the bottom end of the third pipeline is connected to the top of the first delivery pipe (8); The oil separator (14) comprises a body (17), an air inlet pipe (18) is arranged on the top of the body (17), an exhaust pipe (19) is arranged on one side of the air inlet pipe (18), a rotating baffle (20) is arranged inside the body (17), a rotating rod (21) is fixedly mounted on one side of the rotating baffle (20), and a rotating shaft (22) is fixedly mounted on the other side, one end of the rotating shaft (22) passes through one side of the body (17) and extends to the body ( 17), a first motor (23) is fixedly mounted on one end of the rotating shaft (22), a filter plate (24) is fixedly mounted on the top of the rotating baffle (20), a filter element (25) is arranged at the bottom of the rotating baffle (20), an output pipe (26) is arranged at the bottom of the filter element (25), an oil drain pipe (27) is arranged at the bottom of the output pipe (26) and the bottom of the device body (17), and one end of the oil drain pipe (27) is fixedly mounted on the compressor (12).

2. The direct cooling thermal management device for energy storage device according to claim 1, characterized in that: The heat dissipation fan (3) is located at one side of the upper cabin, the filter screen (4) at the front side of the upper cabin is located at the rear side of the cabinet door (2), a control box is arranged inside the lower cabin, a mounting plate is fixedly mounted at the bottom of the compressor (12), the oil separator (14) is located at the top of one end of the third delivery pipe (13), a connecting plate is fixedly mounted at the bottom of the oil separator (14), one side of the connecting plate is fixedly mounted to one side of the compressor (12), and one side of the mounting plate is fixedly mounted to the inner wall of the lower cabin, the first delivery pipe (8) and the third delivery pipe (13) pass through the machine body (1) and extend to the interior of the energy storage box, and the expansion valve corresponds to the plurality of battery pack boxes one by one.

3. The direct cooling thermal management device for energy storage device according to claim 1, characterized in that: One end of the air inlet pipe (18) and the exhaust pipe (19) are fixedly mounted on the bottom of the third delivery pipe (13), and the other end thereof extends into the interior of the device body (17) to the top of the rotating baffle (20). One end of the rotating rod (21) is rotatably connected to the inner wall of the device body (17). The filter plate (24) and the rotating baffle (20) are vertically arranged. The air inlet pipe (18) is located on the left side of the filter plate (24), and the exhaust pipe (19) is located on the right side of the filter plate (24). A groove is provided inside the rotating baffle (20). A first electric push rod (28) is fixedly mounted on the inner wall of the groove. A movable plate (29) is fixedly mounted on one side of the first electric push rod (28). The movable plate (29) is located inside the groove and on the left side of the filter plate (24).

4. The direct cooling thermal management device for energy storage device according to claim 1, characterized in that: A moving opening is provided on the right side of the filter plate (24) and at the top of the rotating baffle (20), and a rotating plate (30) is arranged inside the moving opening. A movable rod (31) is fixedly mounted on the top of one end of the rotating plate (30), one end of the movable rod (31) is rotatably connected to the inner wall of the moving opening, and a second motor (32) is fixedly mounted on the other end of the movable rod. One side of the second motor (32) is fixedly mounted to the inner wall of the moving opening away from the movable rod (31), a second electric push rod (33) is fixedly mounted on the bottom of the rotating plate (30), and a knocking plate (34) is fixedly mounted on the bottom of the second electric push rod (33).

5. The direct cooling thermal management device for energy storage device according to claim 1, characterized in that: The fixed structure (15) comprises a mounting block (151), the top of the mounting block (151) is fixedly mounted to the bottom of the connecting plate, two fixed blocks (152) are fixedly mounted to the bottom of the mounting block (151), a movable groove is provided on the adjacent sides of the fixed blocks (152), a first limiting plate (153) is slidably connected to the inner wall of the bottom end of the movable groove, a first rack (154) is fixedly mounted on the top of the first limiting plate (153), a gear (157) is meshed with the top of the first rack (154), and the A moving rod is fixedly installed in the middle of the gear (157), and both ends of the moving rod are rotatably connected to the inner wall of the moving groove. A second rack (155) is meshed at the top of the gear (157), and a second limiting plate (156) is fixedly installed on the top of the second rack (155). Both sides of the second limiting plate (156) are slidably connected to the inner wall of the top end of the moving groove. Compression springs are fixedly installed on one side of the first limiting plate (153) and the second limiting plate (156), and one end of the compression spring is fixedly installed on the inner wall of the moving groove.

6. The direct cooling thermal management device for energy storage device according to claim 5, characterized in that: The oil drain pipe (27) passes through the middle of the mounting block (151); a sealing block (35) is fixedly mounted on one end of the oil drain pipe (27) close to the compressor (12); a connecting spring is fixedly mounted on one side of the sealing block (35); a connecting port is provided at the bottom of the fixing block (152) close to the compressor (12); a movable plate (36) is fixedly arranged inside the connecting port; the top of the movable plate (36) is fixedly mounted on the bottom of the first rack (154); the movable plate (36) is slidably connected to the inner wall of the connecting port; and the connecting spring passes through the connecting port and is fixedly mounted on one side of the movable plate (36).

7. The direct cooling thermal management device for energy storage device according to claim 6, characterized in that: The oil drain pipe (27) is provided with a first limiting opening at one end close to the mounting block (151), a second limiting opening is provided at the bottom of the first limiting opening, a limiting plate (37) is fixedly installed on one side of the first limiting opening and the second limiting opening and located inside the oil drain pipe (27), an oil drain opening is provided in the middle of the limiting plate (37), a moving block (38) is provided inside the oil drain opening on one side of the first limiting opening, a control board (39) is provided inside the oil drain opening on one side of the second limiting opening, and a third electric push rod (40) is fixedly installed on one side of the moving block (38) and one side of the control board (39).

8. The direct cooling thermal management device for energy storage device according to claim 7, characterized in that: The first limit opening is located on the left side of the oil drain pipe (27), and the second limit opening is located on the right side of the oil drain pipe (27). A plurality of electric telescopic rods (41) are fixedly mounted on the inner wall at the bottom of the moving block (38), and a cleaning rod (42) is fixedly mounted on the top of the plurality of electric telescopic rods (41). An oil drain hole is opened at the bottom of the moving block (38). The third electric push rod (40) is respectively located on the left and right sides of the oil drain pipe (27), and one end of the third electric push rod (40) is fixedly mounted on the inner wall of the mounting block (151).

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