A liquid cooling and air cooling integrated unit structure for energy storage battery cells

Abstract

The utility model provides a kind of liquid cooling and air cooling integrated unit structure for energy storage battery, which makes condenser not easy to dirty and block, and reduces the internal air suction temperature of air conditioner, ensuring the reliable cooling of battery in energy storage cabinet. It comprises: an air conditioner shell, which includes a front end plate, a back plate and four surrounding plates, the four surrounding plates specifically include a top plate, a bottom plate and two side plates; a compressor; an external fan; a condenser; a plate heat exchanger, which includes a liquid cooling inlet, a liquid cooling outlet, a refrigerant inlet and a refrigerant outlet; a water pump; an evaporator; and an internal fan; the back plate of the air conditioner shell is provided with an upper inner air inlet and a lower inner air outlet, and the front end plate of the air conditioner shell is provided with an upper outer air inlet and a lower outer air outlet; a partition frame is arranged in the corresponding area of the upper inner air inlet and the lower inner air inlet, and the evaporator and the internal fan are arranged in the partition frame; the partition frame independently arranges the upper inner air inlet, the lower inner air inlet, the evaporator and the internal fan.

Description

Technical Field

[0001] This utility model relates to the technical field of energy storage structures, specifically to an integrated liquid-cooled and air-cooled unit structure for energy storage cells. Background Technology

[0002] In the small-scale energy storage industry, the batteries inside the storage cabinet generate a significant amount of heat during charging and discharging, and the control system of the batteries also generates heat. The optimal operating environment for battery charging and discharging is generally 20-25 degrees Celsius, with a cell temperature difference of ≤3℃ and humidity of approximately 5%-75%. Therefore, to maintain these operating temperature conditions, the batteries are typically placed in a cabinet, and the entire cabinet is then cooled. Traditional air conditioning products generally use a bottom-intake, top-exhaust structure on the outdoor side. Since small-scale energy storage cabinets are relatively small, using an air conditioning product with a bottom-intake, top-exhaust structure on the outside would have the following disadvantages: 1. Cabinets are usually installed on a concrete base with a foundation. In summer, the temperature of the area near the concrete base will be 4-5 degrees higher than that of the non-concrete base due to the heat effect. 2. The cabinet of the small air conditioner is relatively small. When the air is drawn from the bottom, it is easy to suck dust from the ground into the air conditioner when used outdoors and blow it towards the air conditioner condenser, which will cause the air conditioner to accumulate dust and result in poor heat dissipation. 3. When the air conditioner is used outdoors, dust from the outside will accumulate on the inside of the outdoor condenser and cannot be cleaned. Utility Model Content

[0003] To address the aforementioned issues, this invention provides an integrated liquid-cooled and air-cooled unit structure for energy storage cells. This structure prevents the condenser from becoming clogged and reduces the internal air intake temperature of the air conditioner, ensuring reliable cooling of the batteries inside the energy storage cabinet.

[0004] A liquid-cooled and air-cooled integrated unit structure for energy storage cells, characterized in that it comprises: The air conditioner casing includes a front panel, a rear panel, and four surrounding panels, specifically including a top panel, a bottom panel, and two side panels. compressor; External air fan; Condenser; A plate heat exchanger includes a liquid cooling inlet, a liquid cooling outlet, a refrigerant inlet, and a refrigerant outlet; Water pump; Evaporator; And the internal ventilation system; The rear panel of the air conditioner casing has an upper inner air inlet and a lower inner air outlet, while the front panel has an upper outer air inlet and a lower outer air outlet. A partition frame is provided in the corresponding area of ​​the upper inner air inlet and the lower inner air outlet. The evaporator and internal fan are arranged within the partition frame, which independently arranges the upper inner air inlet, the lower inner air outlet, the evaporator, and the internal fan. A compressor and an external compressor are located within the external space of the air conditioner casing corresponding to the partition frame. The system includes a fan, condenser, water pump, and plate heat exchanger. The refrigerant outlet of the compressor is connected to the inlet of the condenser. Part of the condenser outlet is connected to the inlet of the evaporator, and another part is connected to the refrigerant inlet of the plate heat exchanger. The refrigerant outlet of the evaporator flows into the refrigerant inlet of the plate heat exchanger. The external fan is positioned at the lower outer air outlet and blows air outward. The internal fan draws air from the energy storage cabinet at the upper inner air inlet toward the evaporator and blows it into the energy storage cabinet through the lower inner air outlet.

[0005] Its further features are: The condenser is located in the upper part of the inner cavity of the air conditioner casing and is U-shaped. The condenser is surrounded by the outer periphery of the partition frame, thereby achieving the maximum air intake area and minimizing the air velocity drawn into the condenser, thereby reducing the accumulation of dust on the outer surface of the condenser. The condenser is placed on the condenser mounting plate below, and the condenser mounting plate is made in a U-shape so that the wind energy can pass smoothly through the condenser's pipes and then be drawn away by the external fan; The upper outer air inlet is formed by a combination of several mesh holes, which extend to the adjacent side plates of the front plate, resulting in a large air intake volume. The lower outer air outlet consists of two sets of air outlets, and each set of air outlets is equipped with an external fan. The external fan is an axial flow fan, which makes the airflow speed very high, so that the hot air from the air conditioner can be effectively blown away and will not accumulate near the air conditioner. The internal fan is a centrifugal fan, which is arranged above the evaporator. It also includes an air conditioning control unit, which is placed at a height between the internal fan and the evaporator. This allows the internal fan to blow directly onto the control unit, which is beneficial for controlling heat dissipation. The compressor is placed on the base plate, the plate heat exchanger is placed on the base plate, and the water pump is arranged adjacent to the plate heat exchanger. The liquid inlet pipe is connected to the water pump and then to the liquid cooling inlet of the plate heat exchanger. The liquid cooling outlet of the plate heat exchanger is connected to the liquid cooling medium required by the battery cells through the liquid outlet pipe. The outer end of the liquid inlet pipe is connected to the liquid cooling medium required by the battery cells, which ensures that the liquid cooling medium used to cool the battery cells is reliably cooled by the refrigerant of the plate heat exchanger.

[0006] With the above technical solution, the air conditioner is equipped with an upper outer air inlet and a lower outer air outlet. The lower outer air outlet blows air through an external fan, while the upper outer air inlet is in suction mode, mainly used for heat dissipation of the condenser. At the same time, the plate heat exchanger is equipped with a liquid cooling outlet and a liquid cooling inlet, mainly used for the liquid cooling medium required to connect the battery cells. Meanwhile, the inner side is equipped with an upper inner air inlet and a lower inner air outlet. Combined with the evaporator and the internal fan, it is used to deliver cold air to the energy storage cabinet of the small energy storage unit, cooling and dehumidifying the energy storage cabinet. This makes the condenser less prone to dirt and blockage, and reduces the internal suction temperature of the air conditioner, ensuring reliable cooling of the batteries in the energy storage cabinet. Attached Figure Description

[0007] Figure 1 This is a schematic diagram of the structure of this utility model assembled in an energy storage cabinet; Figure 2 This is a perspective view of the present utility model; Figure 3 This is a rear-view perspective view of the present invention; Figure 4 This is a perspective view of the present invention without the back panel; Figure 5 This is a perspective view of the present invention excluding the four surrounding panels and the front panel; Figure 6 This is a schematic diagram illustrating the working principle of this utility model; The names corresponding to the serial numbers in the diagram are as follows: Air conditioner casing 10, upper inner air inlet 101, lower inner air outlet 102, upper outer air inlet 103, lower outer air outlet 104, front panel 11, rear panel 12, top panel 13, bottom panel 14, side panel 15, side protruding mounting edge 16, compressor 20, outdoor fan 30, condenser 40, plate heat exchanger 50, liquid cooling inlet 51, liquid cooling outlet 52, refrigerant inlet 53, refrigerant outlet 54, water pump 60, evaporator 70, indoor fan 80, partition frame 90, throttling mechanism 100, condenser fixing plate 110, control unit 120, liquid inlet pipe 130, liquid outlet pipe 140, solenoid valve 150; Energy storage cabinet 200. Detailed Implementation

[0008] A liquid-cooled and air-cooled integrated unit structure for energy storage cells, see Figures 1-6 It includes an air conditioner casing 10, a compressor 20, an outdoor fan 30, a condenser 40, a plate heat exchanger 50, a water pump 60, an evaporator 70, and an indoor fan 80. The air conditioner housing 10 includes a front panel 11, a rear panel 12, and four surrounding panels. The surrounding panels specifically include a top panel 13, a bottom panel 14, and two side panels 15. In practice, the surrounding panels are also provided with side-protruding mounting edges 16. The side-protruding mounting edges 16 are fasteners used to assemble the entire air conditioner into one unit. The plate heat exchanger 50 includes a liquid cooling inlet 51, a liquid cooling outlet 52, a refrigerant inlet 53, and a refrigerant outlet 54; The rear panel 12 of the air conditioner casing 10 has an upper inner air inlet 101 and a lower inner air outlet 102. The front panel 11 of the air conditioner casing 10 has an upper outer air inlet 103 and a lower outer air outlet 104. A partition frame 90 is provided in the corresponding area of ​​the upper inner air inlet 101 and the lower inner air outlet 102. An evaporator 70 and an internal fan 80 are arranged in the partition frame 90. The partition frame 90 independently arranges the upper inner air inlet 101, the lower inner air outlet 102, the evaporator 70, and the internal fan 80. A compressor 20, an external fan 30, a condenser 40, and a water supply are arranged in the external space of the air conditioner casing 10 corresponding to the partition frame 90. The refrigerant outlets of pump 60, plate heat exchanger 50, and compressor 20 are connected to the inlet of condenser 40. The outlet of condenser 40 is connected to throttling mechanism 100 and then connected in parallel to the inlet of solenoid valve 150 and the refrigerant inlet of evaporator 70. The outlet of solenoid valve 150 and the refrigerant outlet of evaporator 70 converge to the refrigerant inlet 53 of plate heat exchanger 50. The refrigerant outlet 54 of plate heat exchanger 50 is connected to the refrigerant inlet of compressor 20. The external fan 30 is placed at the lower outer air outlet 104 to blow air outward. The internal fan 80 draws air from the energy storage cabinet at the upper inner air inlet 101 toward evaporator 70 and blows it into energy storage cabinet 200 through the lower inner air outlet 102.

[0009] In a specific embodiment, the condenser 40 is located in the upper part of the inner cavity of the air conditioner housing 10 and is U-shaped. The condenser 40 is arranged around the outer periphery of the partition frame 90, thereby achieving the maximum air intake area and minimizing the wind speed at which air is drawn into the condenser 40, thereby reducing the accumulation of dust on the outer surface of the condenser 40. The condenser 40 is placed on the condenser fixing plate 110 below. The condenser fixing plate 110 is made into a U-shape so that the wind energy can pass smoothly through the condenser's pipes and then be sucked away by the external fan 30. The upper outer air inlet 103 is formed by a combination of several mesh holes, which extend to the positions of the two side plates 15 adjacent to the front plate 11, resulting in a large air intake volume. The lower outer air outlet 104 consists of two sets of air outlets. Each set of air outlets is equipped with an external fan 30. The external fan 30 is an axial flow fan, which makes the airflow speed very high, so that the hot air from the air conditioner can be effectively blown away and will not accumulate near the air conditioner. The internal fan 80 is a centrifugal fan, which is arranged above the evaporator 70. It also includes an air conditioning control unit 120, which is positioned at a height between the internal fan 80 and the evaporator 70. This helps the internal fan 70 to blow directly onto the control unit 120, which is beneficial for controlling heat dissipation. The compressor 20 is placed on the base plate 14, the plate heat exchanger 50 is placed on the base plate 14, and the water pump 60 is arranged adjacent to the plate heat exchanger 50. The liquid inlet pipe 130 is connected to the water pump 60 and then to the liquid cooling inlet 51 of the plate heat exchanger 50. The liquid cooling outlet 52 of the plate heat exchanger 50 is connected to the liquid cooling medium required by the battery cell through the liquid outlet pipe 140. The outer end of the liquid inlet pipe 130 is connected to the liquid cooling medium required by the battery cell, which makes the liquid cooling medium used to cool the battery cell reliably cooled by the refrigerant of the plate heat exchanger 50.

[0010] Its beneficial effects are as follows: 1. The air conditioner is equipped with an upper outer air inlet and a lower outer air outlet. The lower outer air outlet blows air through an external fan, while the upper outer air inlet is in a suction state, mainly used for heat dissipation of the condenser. At the same time, the plate heat exchanger is equipped with a liquid cooling outlet and a liquid cooling inlet, mainly used for the liquid cooling medium required to connect the battery cells. Meanwhile, the inner side is equipped with an upper inner air inlet and a lower inner air outlet. Combined with the evaporator and the internal fan, it is used to deliver cold air to the energy storage cabinet of the small storage unit, so as to cool and dehumidify the energy storage cabinet. 2. The outer condenser is placed at the top of the air conditioner. The condenser is made in a U-shape to maximize the air intake area and minimize the air velocity drawn into the condenser, thereby reducing the accumulation of dust on the condenser surface. 3. Two sets of outdoor fans are placed at the bottom of the air conditioner, so that the air is directly concentrated at the bottom and blown out of the air conditioner, resulting in a high air velocity. This effectively blows away the hot air from the air conditioner and prevents it from accumulating near the air conditioner. The liquid-cooled plate heat exchanger is placed on the side of the compressor, and the water pump is placed close to the plate heat exchanger. This makes full use of space, has a compact structure, effectively reduces the overall size of the air conditioner, and is convenient to use. 4. The air conditioner uses an upward return and downward air supply method for the internal air intake. The internal fan is a centrifugal fan, which is placed above the evaporator and below the fan. The control unit is placed between the internal fan and the evaporator, which helps the internal fan blow directly onto the control unit, which is beneficial for controlling heat dissipation.

[0011] It effectively solves the problem of dust being sucked into the air conditioner and causing the condenser to become dirty and clogged when the air conditioner is installed too close to the foundation, and also effectively solves the problem of the condenser being difficult to clean after it becomes dirty and clogged; it also effectively solves the problem of air conditioner malfunction caused by excessive temperature after being exposed to the sun on the cement base in summer, and can effectively reduce the air conditioner's suction temperature by at least 4-6℃.

[0012] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0013] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A liquid-cooled and air-cooled integrated unit structure for energy storage cells, characterized in that, It includes: The air conditioner casing includes a front panel, a rear panel, and four surrounding panels, specifically including a top panel, a bottom panel, and two side panels. compressor; External air fan; Condenser; A plate heat exchanger includes a liquid cooling inlet, a liquid cooling outlet, a refrigerant inlet, and a refrigerant outlet; Water pump; Evaporator; And the internal fan; The rear panel of the air conditioner casing has an upper inner air inlet and a lower inner air outlet, while the front panel has an upper outer air inlet and a lower outer air outlet. A partition frame is provided in the corresponding area of ​​the upper inner air inlet and the lower inner air outlet. The evaporator and internal fan are arranged within the partition frame, which independently arranges the upper inner air inlet, the lower inner air outlet, the evaporator, and the internal fan. A compressor and an external compressor are located within the external space of the air conditioner casing corresponding to the partition frame. The system includes a fan, condenser, water pump, and plate heat exchanger. The refrigerant outlet of the compressor is connected to the inlet of the condenser. Part of the condenser outlet is connected to the inlet of the evaporator, and another part is connected to the refrigerant inlet of the plate heat exchanger. The refrigerant outlet of the evaporator flows into the refrigerant inlet of the plate heat exchanger. The external fan is positioned at the lower outer air outlet and blows air outward. The internal fan draws air from the energy storage cabinet at the upper inner air inlet toward the evaporator and blows it into the energy storage cabinet through the lower inner air outlet.

2. The integrated liquid-cooled and air-cooled unit structure for energy storage cells according to claim 1, characterized in that: The condenser is located in the upper part of the inner cavity of the air conditioner housing and is U-shaped. The condenser surrounds the outer periphery of the partition frame.

3. The integrated liquid-cooled and air-cooled unit structure for energy storage cells according to claim 2, characterized in that: The condenser is placed on the condenser mounting plate below.

4. The integrated liquid-cooled and air-cooled unit structure for energy storage cells according to claim 1, characterized in that: The upper outer air inlet is formed by a combination of several mesh holes, which extend to the adjacent two side plates of the front end plate.

5. The integrated liquid-cooled and air-cooled unit structure for energy storage cells according to claim 1, characterized in that: The lower outer air outlet consists of two sets of air outlets, and each set of air outlets is equipped with an external fan, which is an axial flow fan.

6. The integrated liquid-cooled and air-cooled unit structure for energy storage cells according to claim 1, characterized in that: The internal fan is a centrifugal fan, which is arranged above the evaporator. It also includes an air conditioning control unit, which is located at a height between the internal fan and the evaporator.

7. The integrated liquid-cooled and air-cooled unit structure for energy storage cells according to claim 1, characterized in that: The compressor is placed on the base plate, the plate heat exchanger is placed on the base plate, the water pump is arranged adjacent to the plate heat exchanger, the liquid inlet pipe is connected to the water pump and then to the liquid cooling inlet of the plate heat exchanger, the liquid cooling outlet of the plate heat exchanger is connected to the liquid cooling medium required by the battery cell through the liquid outlet pipe, and the outer end of the liquid inlet pipe is connected to the liquid cooling medium required by the battery cell.

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