Cooling unit

Abstract

The utility model belongs to the technical field of battery cooling, and discloses a cooling unit which comprises a case, a fan, a waterway system, a refrigerating system and a plate heat exchanger, and the case is provided with an air inlet hole and an air outlet hole; the fan is arranged in the case; the waterway system comprises a water inlet pipe, a water outlet pipe, a water pump and a PTC heater, the refrigerating system comprises an integrated device and a condenser, the integrated device comprises a compressor, a compressor driving controller, a water pump driving controller, a PTC driving controller, a fan driving controller and a heat management unit complete machine CCU controller, and the output end of the compressor communicates with the condenser. The input end of the compressor communicates with a second heat exchange plate of the plate heat exchanger, the condenser communicates with the second heat exchange plate, and the condenser is located between the air inlet hole and the fan. A compressor, a compressor driving controller, a water pump driving controller, a PTC driving controller, a fan driving controller and a heat management unit complete machine CCU controller are integrated to obtain an integrated device, and the size of a case is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery cooling technical field especially relates to cooling unit. BACKGROUND

[0002] In the electric heavy truck, the water cooling thermal management unit is responsible for controlling the temperature of the battery, when the battery charges or discharges and generates high temperature, the water cooling thermal management unit absorbs heat through the refrigerant and dissipates through the condenser. With the continuous increase of battery density, the charging rate is also rising, and the heat dissipation efficiency of the water cooling thermal management unit is also increasing. Because the battery containing space of the electric heavy truck is limited, when the number of batteries is increased, the overall volume of the battery is increased, so that the water cooling thermal management unit needs to be adaptively reduced, but the current water cooling thermal management unit is large in size, which cannot meet the demand. UTILITY MODEL CONTENTS

[0003] The utility model discloses a purpose at providing cooling unit, compressor, compressor drive controller, water pump drive controller, PTC drive controller, fan drive controller and thermal management unit whole machine CCU controller are integrated to obtain integrated device, reduce the volume of the case, satisfy the demand.

[0004] In order to achieve this purpose, the utility model adopts the following technical scheme:

[0005] Cooling unit, comprising:

[0006] Case, the wall of the case is equipped with air inlet hole and exhaust hole;

[0007] Fan, set up in the inside of the case, the fan is opposite the exhaust hole;

[0008] Water system, refrigeration system and plate heat exchanger, the water system, the refrigeration system and the plate heat exchanger are all set up in the inside of the case, the water system includes water inlet pipe, water outlet pipe, water pump, PTC heater, the water inlet pipe, the water pump and the PTC heater, the first heat exchange plate of the plate heat exchanger and the water outlet pipe are communicated in proper order, the refrigeration system includes integrated device and condenser, the integrated device includes compressor, compressor drive controller, water pump drive controller, PTC drive controller, fan drive controller and thermal management unit whole machine CCU controller, the output end of the compressor is communicated with the condenser, the input end of the compressor is communicated with the second heat exchange plate of the plate heat exchanger, the condenser is communicated with the second heat exchange plate, and the condenser is located between the air inlet hole and the fan.

[0009] As an optional technical scheme, the cabinet comprises a first wall body in a first direction, a second wall body in a second direction, and a third wall body in a third direction, the first direction, the second direction, and the third direction are perpendicular to each other, the first wall body is provided with a plurality of air outlet holes, and the second wall body and / or the third wall body is provided with a plurality of air inlet holes.

[0010] As an optional technical scheme, the cabinet further comprises a mounting plate, the mounting plate is fixedly installed on the first wall body, a cavity is arranged between the mounting plate and the first wall body, the mounting plate is provided with a mounting opening opposite to the air outlet hole, one end of the fan penetrates through the mounting opening and extends into the cavity, the fan is fixedly connected with the mounting plate, and the other end of the fan penetrates through the mounting opening and is located outside the cavity.

[0011] As an optional technical scheme, the condenser, the fan, and the first wall body are sequentially arranged and spaced apart along the first direction, the thickness direction of the condenser, the rotation axis of the fan, and the thickness direction of the first wall body are parallel to each other or coincide with each other.

[0012] As an optional technical scheme, the waterway system is located in the second direction or the third direction of the condenser.

[0013] And / or, the plate heat exchanger is located in the second direction or the third direction of the condenser.

[0014] And / or, the integrated device is located in the second direction or the third direction of the condenser.

[0015] As an optional technical scheme, the cabinet further comprises a fourth wall body opposite to the first wall body, the fourth wall body and the condenser form a first airflow space, and the waterway system, the plate heat exchanger, and the integrated device are located outside the first airflow space.

[0016] As an optional technical scheme, the condenser and the fan form a second airflow space, and the waterway system, the plate heat exchanger, and the integrated device are located outside the second airflow space.

[0017] As an optional technical scheme, the condenser is arranged between the second wall body and the fan, and the thickness direction of the condenser is the same as the thickness direction of the second wall body.

[0018] And / or, the condenser is arranged between the third wall body and the fan, and the thickness direction of the condenser is the same as the thickness direction of the third wall body.

[0019] As an optional technical solution, the water system includes two inlet pipes and two outlet pipes.

[0020] As an optional technical solution, the top of the outer wall of the chassis is provided with hooks.

[0021] The beneficial effects of this utility model are:

[0022] This utility model provides a cooling unit, which includes a casing, a fan, a water system, a refrigeration system, and a plate heat exchanger. The casing wall is provided with an air inlet and an exhaust vent. The fan is located inside the casing and faces the exhaust vent. The water system, refrigeration system, and plate heat exchanger are all located inside the casing. The water system includes an inlet pipe, an outlet pipe, a water pump, and a PTC heater. The inlet pipe, water pump, PTC heater, first heat exchange plate of the plate heat exchanger, and outlet pipe are connected in sequence. The refrigeration system includes an integrated device and a condenser. The integrated device includes a compressor, a compressor drive controller, a water pump drive controller, a PTC drive controller, a fan drive controller, and a thermal management unit CCU controller. The output end of the compressor is connected to the condenser, and the input end of the compressor is connected to the second heat exchange plate of the plate heat exchanger. The condenser is connected to the second heat exchange plate and is located between the air inlet and the fan.

[0023] The compressor, compressor drive controller, water pump drive controller, PTC drive controller, fan drive controller, and the CCU controller of the thermal management unit are integrated into an integrated device. This integrated device has a relatively small size, reducing the overall volume of the chassis. Water carrying heat from the battery enters the inlet pipe, and the water pump delivers the water to the PTC heater. At this stage, the PTC heater does not heat the water; it only serves a transport function. After passing through the PTC heater, the water enters the first heat exchange plate of the plate heat exchanger. Simultaneously, the compressor compresses the refrigerant and delivers it to the condenser, where it cools the refrigerant and... The refrigerant is delivered to the second heat exchange plate of the plate heat exchanger. In the plate heat exchanger, the heat of the water in the first heat exchange plate is transferred to the refrigerant in the second heat exchange plate, completing the heat transfer. The cooled water is output through the outlet pipe and sent to the battery to continue transferring the battery's heat. The heated refrigerant flows back to the compressor and is compressed by the compressor. After the fan starts, air enters the inside of the chassis through the air inlet. When the air passes through the condenser, the air and the condenser complete heat exchange. The heat of the refrigerant in the condenser is transferred to the air, the refrigerant cools down and the air heats up. The hot air passes through the fan and the exhaust vent and is discharged to the outside of the chassis. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the cooling unit of this utility model;

[0025] Figure 2is a front view of the cooling unit (the third wall body is not shown) of the utility model;

[0026] Figure 3 is a front view of the cooling unit (the third wall body is not shown) of the utility model;

[0027] Figure 4 is a left view of the cooling unit (the second wall body is not shown) of the utility model;

[0028] Figure 5 is an explosion view of the cooling unit of the utility model;

[0029] Figure 6 is an explosion view of another structure of the cooling unit of the utility model.

[0030] In the figure:

[0031] 1, case;11, first wall body;12, second wall body;13, third wall body;14, fourth wall body;15, air inlet hole;16, air outlet hole;17, mounting plate;171, mounting port;18, cavity;19, hook;

[0032] 2, fan;

[0033] 3, plate heat exchanger;

[0034] 41, water inlet pipe;42, water outlet pipe;43, water pump;44, PTC heater;

[0035] 51, integrated device;52, condenser. DETAILED DESCRIPTION

[0036] The utility model will be further explained in detail below in combination with the drawings and examples.It can be understood that the specific examples described here are only used to explain the utility model, and not to limit the utility model.In addition, it should be noted that in order to facilitate the description, only the part related to the utility model is shown in the drawings, not all structures.

[0037] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated;It can be mechanical connection, or electrical connection;It can be directly connected, or indirectly connected through intermediate medium, it can be the communication inside two elements or the interaction relationship between two elements.For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0038] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0039] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0040] like Figures 1 to 6 As shown, this embodiment provides a cooling unit, which includes a casing 1, a fan 2, a water system, a refrigeration system, and a plate heat exchanger 3. The casing 1 has an air inlet 15 and an exhaust 16 on its wall. The fan 2 is located inside the casing 1, facing the exhaust 16. The water system, refrigeration system, and plate heat exchanger 3 are all located inside the casing 1. The water system includes an inlet pipe 41, an outlet pipe 42, a water pump 43, and a PTC heater 44. The heater 44, the first heat exchange plate of the plate heat exchanger 3, and the water outlet pipe 42 are connected in sequence. The refrigeration system includes an integrated device 51 and a condenser 52. The integrated device 51 includes a compressor, a compressor drive controller, a water pump drive controller, a PTC drive controller, a fan drive controller, and a thermal management unit CCU controller. The output end of the compressor is connected to the condenser 52, and the input end of the compressor is connected to the second heat exchange plate of the plate heat exchanger 3. The condenser 52 is connected to the second heat exchange plate and is located between the air inlet 15 and the fan 2.

[0041] Specifically, the compressor, the compressor drive controller, the water pump drive controller, the PTC drive controller, the fan drive controller and the heat management unit whole machine CCU controller are integrated to obtain the integrated device 51, the spatial size of the integrated device 51 is relatively small, and the volume of the machine case 1 is reduced; when the electric heavy truck is normally working, the water flow carrying the heat generated by the battery enters the water inlet pipe 41, the water pump 43 pumps the water flow to the PTC heater 44, at this time, the PTC heater 44 does not heat the water flow, but only plays a transmission role, after the water flow passes through the PTC heater 44, it enters the first heat exchange plate of the plate heat exchanger 3, at the same time, the compressor compresses the refrigerant and delivers the refrigerant to the condenser 52, the condenser 52 cools the refrigerant and delivers the refrigerant to the second heat exchange plate of the plate heat exchanger 3, in the plate heat exchanger 3, the heat of the water flow in the first heat exchange plate is transferred to the refrigerant in the second heat exchange plate, the heat transfer is completed, the cooled water flow is output through the water outlet pipe 42 and sent to the battery to continue transferring the heat of the battery, the warmed refrigerant flows back to the compressor to continue being compressed by the compressor; after the fan 2 is started, air enters the inside of the machine case 1 from the air inlet hole 15, when the air passes through the condenser 52, the air and the condenser 52 complete heat exchange, the heat of the refrigerant in the condenser 52 is transferred to the air, the refrigerant is cooled and the air is warmed, the high-temperature air passes through the fan 2 and the air outlet hole 16, and the high-temperature air is discharged to the outside of the machine case 1.

[0042] The air directly exchanges heat with the condenser 52 in the inside of the machine case 1, without the need to additionally set a refrigerant pipe and a cold plate, the cost is lower, and the condensing effect of the condenser 52 is better for the whole refrigeration system, and the heat exchange is more sufficient.

[0043] The cooling unit of the embodiment is applied to the electric heavy truck, and the electric heavy truck is mostly applied to the outdoor mine field, when the mine field is located in an environment with a low temperature and the electric heavy truck is not started for a long time, the PTC heater 44 is started, the PTC heater 44 heats the water flow, the high-temperature water flow flows back to the battery through the water outlet pipe 42 to heat and keep warm the battery, so that the electric heavy truck can be started and run in time.

[0044] The compressor drive controller is used to control the operation of the compressor, the water pump drive controller is used to control the operation of the water pump 43, the PTC drive controller is used to control the operation of the PTC heater 44, and the fan drive controller is used to control the operation of the fan 2, the integrated device 51 can directly provide high-voltage electricity to the fan 2 and the water pump 43, without the need to use a direct-current-direct-current converter, thereby reducing the cost and reducing the occupied space.

[0045] In the embodiment, the compressor drive controller, the water pump drive controller, the PTC drive controller, the fan drive controller and the heat management unit whole machine CCU controller are integrated on one PCB board, thereby reducing the spatial size and reducing the cost.

[0046] At present, the overall height of the electric heavy truck is limited, when the number of batteries is increased, the overall height of the battery is also increased, which means that the height of the water-cooled unit needs to be reduced, therefore, the compressor drive controller, the water pump drive controller, the PTC drive controller, the fan drive controller and the heat management unit CCU controller are integrated to reduce the height of the cabinet 1, so that the water-cooled unit of the embodiment can be used with the battery.

[0047] Optionally, the water system further comprises a liquid storage device, the liquid storage device is connected to the plate heat exchanger 3, and the liquid storage device can supply water to the plate heat exchanger 3.

[0048] Optionally, the cabinet 1 comprises a first wall body 11 in the first direction, a second wall body 12 in the second direction and a third wall body 13 in the third direction, the first direction, the second direction and the third direction are perpendicular to each other, the first wall body 11 is provided with a plurality of air outlet holes 16, and the second wall body 12 and / or the third wall body 13 is provided with a plurality of air inlet holes 15.

[0049] In the embodiment, when the water-cooled unit is applied to the electric heavy truck, the first direction is the vertical direction, the second direction and the third direction are both horizontal directions, the first wall body 11 is the top wall of the cabinet 1, and the second wall body 12 and the third wall body 13 are both side walls of the cabinet 1.

[0050] The first direction is the Z-axis direction, the second direction is the X-axis direction, and the third direction is the Y-axis direction.

[0051] In the embodiment, the second wall body 12 and the third wall body 13 are both provided with a plurality of air inlet holes 15, air enters the inside of the cabinet 1 from the four side walls of the cabinet 1 and is discharged from the top wall of the cabinet 1.

[0052] Optionally, the inside of the cabinet 1 is further provided with a mounting plate 17, the mounting plate 17 is fixedly installed on the first wall body 11, a cavity 18 is arranged between the mounting plate 17 and the first wall body 11, the mounting plate 17 is provided with a mounting opening 171 opposite the air outlet hole 16, one end of the fan 2 penetrates through the mounting opening 171 and extends into the cavity 18, the fan 2 is fixedly connected with the mounting plate 17, and the other end of the fan 2 penetrates through the mounting opening 171 and is located outside the cavity 18.

[0053] The opening diameter of the mounting hole 171 is equal to the outer diameter of the fan 2, or the opening diameter of the mounting hole 171 is slightly larger than the outer diameter of the fan 2. When the fan 2 is in operation, the high-temperature air is always discharged from the top of the fan 2, that is, after passing through the fan 2, part of the high-temperature air can directly pass through the exhaust hole 16 and be discharged to the outside of the cabinet 1, and the other part of the high-temperature air is blocked by the first wall body 11 and returns to the cavity 18. The mounting plate 17 blocks the part of the high-temperature air, so that the part of the high-temperature air can pass through the exhaust hole again and be discharged to the outside of the cabinet 1 along the subsequent high-temperature air, thereby preventing the part of the high-temperature air from contacting the water system, the refrigeration system, and the plate heat exchanger 3 again.

[0054] As shown in Figure 6 In an embodiment, the condenser 52, the fan 2, and the first wall body 11 are sequentially arranged in the first direction, and the thickness direction of the condenser 52, the rotation axis of the fan 2, and the thickness direction of the first wall body 11 are parallel to or coincide with each other. The thickness of the cabinet 1 needs to be reduced, and the thickness of the condenser 52, the thickness of the fan 2, and the thickness of the first wall body 11 are all small. Sequentially arranging the condenser 52, the fan 2, and the first wall body 11 in the first direction can make full use of the space of the cabinet 1, and the thickness of the cabinet 1 does not need to be increased.

[0055] Optionally, the water system is located in the second direction or the third direction of the condenser 52, and the thickness of the cabinet 1 does not need to be increased.

[0056] Optionally, the plate heat exchanger 3 is located in the second direction or the third direction of the condenser 52, and the thickness of the cabinet 1 does not need to be increased.

[0057] Optionally, the integrated device 51 is located in the second direction or the third direction of the condenser 52, and the thickness of the cabinet 1 does not need to be increased.

[0058] Optionally, the cabinet 1 further comprises a fourth wall body 14 opposite to the first wall body 11, and the fourth wall body 14 and the condenser 52 form a first airflow space, and the water system, the plate heat exchanger 3, and the integrated device 51 are located outside the first airflow space. Since the water system, the plate heat exchanger 3, and the integrated device 51 are located outside the first airflow space, the thickness of the first airflow space can be appropriately reduced, and the thickness of the cabinet 1 does not need to be increased.

[0059] Optionally, the condenser 52 and the fan 2 form a second airflow space, and the water system, the plate heat exchanger 3, and the integrated device 51 are located outside the second airflow space. Since the water system, the plate heat exchanger 3, and the integrated device 51 are located outside the second airflow space, the thickness of the second airflow space can be appropriately reduced, and the thickness of the cabinet 1 does not need to be increased.

[0060] As shown in Figure 5As shown, in some other embodiments, a condenser 52 is provided between the second wall 12 and the fan 2, and the thickness direction of the condenser 52 is the same as the thickness direction of the second wall 12. The second wall 12 is provided with multiple air inlets, and the condenser 52 is vertically arranged so that the thickness direction of the condenser 52 is the same as the thickness direction of the second wall 12. Air passes through the air inlets of the second wall 12 and then passes vertically through the condenser 52.

[0061] like Figure 5 As shown, in some other embodiments, a condenser 52 is provided between the third wall 13 and the fan 2, and the thickness direction of the condenser 52 is the same as the thickness direction of the third wall 13. The third wall 13 is provided with multiple air holes, and the condenser 52 is vertically arranged so that the thickness direction of the condenser 52 is the same as the thickness direction of the third wall 13. Air passes through the air inlet of the third wall 13 and then passes vertically through the condenser 52.

[0062] Optionally, the water system includes two inlet pipes 41 and two outlet pipes 42. The water-cooled unit is arranged between the two battery packs to cool them down.

[0063] Optionally, the top of the outer wall of the chassis 1 is provided with hooks 19 for easy lifting and handling.

[0064] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. Cooling unit, characterized in that The application relates to a cabinet (1) provided with air inlet holes (15) and air outlet holes (16); a fan (2) arranged in the cabinet (1) and facing the air outlet holes (16); a water system, a refrigeration system and a plate heat exchanger (3) arranged in the cabinet (1), the water system comprising a water inlet pipe (41), a water outlet pipe (42), a water pump (43) and a PTC heater (44), the water inlet pipe (41), the water pump (43), the PTC heater (44), a first heat exchange plate of the plate heat exchanger (3) and the water outlet pipe (42) being sequentially communicated, the refrigeration system comprising an integrated device (51) and a condenser (52), the integrated device (51) comprising a compressor, a compressor driving controller, a water pump driving controller, a PTC driving controller, a fan driving controller and a thermal management unit CCU controller, the output end of the compressor being communicated with the condenser (52), the input end of the compressor being communicated with a second heat exchange plate of the plate heat exchanger (3), the condenser (52) being communicated with the second heat exchange plate, and the condenser (52) being located between the air inlet holes (15) and the fan (2). The cabinet (1) comprises a first wall (11) in a first direction, a second wall (12) in a second direction and a third wall (13) in a third direction, the first direction, the second direction and the third direction being perpendicular to each other, the first wall (11) being provided with a plurality of air outlet holes (16), and the second wall (12) and / or the third wall (13) being provided with a plurality of air inlet holes (15). The cabinet (1) further comprises a mounting plate (17) fixedly arranged on the first wall (11), a cavity (18) being arranged between the mounting plate (17) and the first wall (11), the mounting plate (17) being provided with a mounting opening (171) facing the air outlet holes (16), one end of the fan (2) penetrating through the mounting opening (171) and extending into the cavity (18), the fan (2) being fixedly connected with the mounting plate (17), and the other end of the fan (2) penetrating through the mounting opening (171) and being located outside the cavity (18). The condenser (52), the fan (2) and the first wall (11) are sequentially arranged with a spacing in the first direction, the thickness direction of the condenser (52), the rotating axis of the fan (2) and the thickness direction of the first wall (11) being parallel to each other or coinciding with each other.

2. Cooling pack according to claim 1, characterized in that The water system is located in the second direction or the third direction of the condenser (52); 3. The cooling pack of claim 2, wherein, And / or, the plate heat exchanger (3) is located in the second direction or the third direction of the condenser (52); 4. The cooling pack of claim 3, wherein, And / or, the integrated device (51) is located in the second direction or the third direction of the condenser (52).

5. The cooling pack of claim 4, wherein, ​ ​ ​ 6. The cooling pack of claim 5, wherein, The cabinet (1) further comprises a fourth wall body (14) opposite to the first wall body (11), and a first air flow space is formed between the fourth wall body (14) and the condenser (52), and the waterway system, the plate heat exchanger (3) and the integrated device (51) are located outside the first air flow space.

7. The cooling pack of claim 5, wherein, A second air flow space is formed between the condenser (52) and the fan (2), and the waterway system, the plate heat exchanger (3) and the integrated device (51) are located outside the second air flow space.

8. The cooling pack of claim 3, wherein, The second wall body (12) is provided with the condenser (52) between the second wall body (12) and the fan (2), and the thickness direction of the condenser (52) is the same as the thickness direction of the second wall body (12). And / or, the third wall body (13) is provided with the condenser (52) between the third wall body (13) and the fan (2), and the thickness direction of the condenser (52) is the same as the thickness direction of the third wall body (13).

9. The cooling pack of any of claims 1-8, wherein, The waterway system comprises two water inlet pipes (41) and two water outlet pipes (42).

10. Cooling pack according to any of claims 1-8, characterized in that An outer wall top of the cabinet (1) is provided with a hook (19).

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