Thermal management integrated device

Abstract

The invention belongs to the technical field of thermal management, and discloses a thermal management integrated device which comprises a shell assembly, a heating piece, a control circuit board and a compressor, the shell assembly is provided with a first inner cavity and a second inner cavity, the heating piece is arranged in the first inner cavity, a heating cavity is defined by the heating piece and the first inner cavity, and a first busbar is arranged on the heating piece; the first busbar is fixed to the shell assembly, the control circuit board is fixedly arranged in the second inner cavity, a second busbar is arranged on the control circuit board, the second busbar is fixed to the shell assembly, and the first busbar extends into the second inner cavity from the first inner cavity and is connected with the second busbar in an inserted mode. The heating piece is in communication connection with the control circuit board through the first busbar and the second busbar, and the compressor is arranged on the shell assembly and is in communication connection with the control circuit board. According to the device, reliable and convenient electric connection is achieved through insertion, the shell assembly bears insertion stress of the control circuit board and the heating piece, the situation that electric connection fails due to the fact that stress borne by connecting points is too large is avoided, and electric connection is reliable and stable.

Description

Technical Field

[0001] The present invention relates to the field of thermal management technology, and in particular to a thermal management integrated device. Background Art

[0002] In the vehicle temperature control system, the cooling system and the heating system both play a very important role. At present, the vehicle thermal management system includes components such as compressors, heating elements, and control circuit boards, which realize functions such as cooling, heating, and heat exchange medium circulation through control, and then realize thermal management control of the vehicle as needed.

[0003] In the prior art, in order to increase the degree of integration and reduce the number of pipelines, the compressor, the heater, and the control circuit board are integrated. However, in the existing integrated device, due to the large vibration of the compressor during operation, it is easy to cause adverse effects on the electrical connection between the control circuit board and the heater, specifically, impact on the connection parts such as the solder joints between the control circuit board and the heater, and the pressure change of the heater when the heat exchange medium flows inside the heater may cause deformation, which may also cause the solder joints at the connection between the heater and the control circuit board to have the risk of failure, affecting the reliability and effectiveness of the overall electrical connection of the device. In addition, in the prior art, the control circuit board and the heater in the controller are connected by welding, but the welding method has limited operating space, is difficult to weld, takes a long time, and has a high defect rate, which affects the production line rhythm, and is not easy to disassemble when subsequent parts fail or are replaced, and the operation is difficult. Summary of the invention

[0004] The purpose of the present invention is to provide a thermal management integrated device, which can further integrate the heating component and the controller. The connection between the control circuit board and the heating element is quick and convenient, which is beneficial to the overall production and maintenance of the device. The shell assembly bears the plug-in stress of the control circuit board and the heating element, avoiding excessive stress on the connection point and causing electrical connection failure, and the electrical connection is reliable and stable.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] A thermal management integrated device, comprising:

[0007] A housing assembly having a first inner cavity and a second inner cavity;

[0008] A heating element is disposed in the first inner cavity and encloses the first inner cavity together to form a heating cavity. The heating element is provided with a first bus bar, and the first bus bar is fixed to the housing assembly through a first connecting member.

[0009] a control circuit board, fixedly disposed in the second inner cavity, the control circuit board being provided with a second bus bar, the second bus bar being fixed to the housing assembly via a second connector, the first bus bar extending from the first inner cavity into the second inner cavity and plugged into the second bus bar, the heating element being communicatively connected to the control circuit board via the first bus bar and the second bus bar;

[0010] The compressor is arranged on the housing assembly and is communicatively connected with the control circuit board.

[0011] Preferably, the shell assembly includes a first shell portion, a second shell portion and a third shell portion which are arranged in sequence, the first shell portion and the second shell portion together enclose a first inner cavity, the second shell portion and the third shell portion together enclose a second inner cavity, the heating element and the second shell portion together enclose the heating cavity, the first bus and the heating element are both fixed to the second shell portion through the first connecting member, and the second bus is fixed to the third shell portion through the second connecting member.

[0012] Preferably, the first busbar is provided with a first connecting hole, the heating element is provided with a second connecting hole, the second shell portion is provided with a third connecting hole, and the first connecting element passes through the first connecting hole, the second connecting hole and is fixedly connected with the third connecting hole.

[0013] Preferably, the first connecting member includes a first bolt, the third connecting hole is configured as a threaded hole, and the first bolt passes through the first connecting hole, and the second connecting hole is threadedly connected with the third connecting hole.

[0014] Preferably, the second busbar is provided with a fourth connection hole, the third shell portion is provided with a fifth connection hole, and the second connecting member passes through the fourth connection hole and the fifth connection hole for fixed connection.

[0015] Preferably, the second connecting member includes a second bolt, the fifth connecting hole is configured as a threaded hole, and the second bolt passes through the fourth connecting hole and the fifth connecting hole for threaded connection.

[0016] Preferably, the control circuit board is provided with a conductive plug terminal, the first busbar passes through the second shell portion and is plugged into the conductive plug terminal, and the heating element is communicatively connected with the control circuit board via the first busbar and the conductive plug terminal.

[0017] Preferably, the second shell portion is provided with a liquid inlet and a liquid outlet connected to the heating chamber.

[0018] Preferably, the compressor is fixedly arranged on the third shell portion.

[0019] Preferably, the compressor has an air intake port and an air discharge port, and the air intake port is located on a side closer to the third shell portion than the air discharge port.

[0020] Beneficial effects:

[0021] The thermal management integrated device provided by the present invention has a first busbar on the heating element, which is fixed to the housing assembly through a first connector, a second busbar on the control circuit board, which is fixed to the housing assembly through a second connector, the first busbar extends from the first inner cavity to the second inner cavity and is plugged into the second busbar, and the heating element is connected to the control circuit board through the first busbar and the second busbar for communication. Compared with the traditional welding form, the plug-in method makes the connection between the control circuit board and the heating element quick and convenient, and the disassembly and assembly operation is reliable and convenient, which is conducive to the production and maintenance of the device as a whole. In addition, the heating element and the control circuit board are connected through the first busbar and the second busbar, so as to realize the communication control of the control circuit board on the heating element. The first busbar and the second busbar are both fixed to the housing assembly, so that the plug-in stress originally acting on the heating element and the control circuit board is transferred to the housing assembly to bear, avoiding the failure of the heating element and the connection points of the control circuit board and the solder joints thereon due to the large stress, and at the same time, it can also resist the deformation of the connector caused by the vibration of the compressor during operation, resulting in the failure of the solder joints due to the large stress, so that the overall electrical connection is reliable and stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic structural diagram of the thermal management integrated device provided by the present invention;

[0023] Figure 2 is a cross-sectional schematic diagram of a thermal management integrated device provided by an embodiment of the present invention;

[0024] Figure 3 The present invention Figure 2 The cross-sectional diagram at A in the middle;

[0025] Figure 4 It is a cross-sectional schematic diagram of a thermal management integrated device provided by another embodiment of the present invention.

[0026] In the figure:

[0027] 1. Shell assembly; 101. First inner cavity; 102. Second inner cavity; 103. Heating cavity; 11. First shell portion; 12. Second shell portion; 121. Third connecting hole; 122. Liquid inlet; 123. Liquid outlet; 124. Through hole; 13. Third shell portion; 131. Fifth connecting hole;

[0028] 2. Heating element; 21. First bus bar; 211. First connecting hole; 22. First connecting element; 23. Second connecting hole;

[0029] 3. Control circuit board; 31. Conductive plug terminal; 32. Second bus bar; 321. Fourth connecting hole; 33. Second connecting member;

[0030] 4. Compressor; 41. Air intake; 42. Air exhaust. DETAILED DESCRIPTION

[0031] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0032] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0034] In the description of this embodiment, the terms "upper", "lower", "right", etc., directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0035] This embodiment provides a thermal management integrated device. Figures 1 to 3 As shown, the thermal management integrated device includes a housing assembly 1, a heating element 2, a control circuit board 3 and a compressor 4.

[0036] The shell assembly 1 has a first inner cavity 101 and a second inner cavity 102. The heating element 2 is arranged in the first inner cavity 101 and encloses the first inner cavity 101 together to form a heating cavity 103. The heating element 2 is provided with a first bus 21, and the first bus 21 is fixed to the shell assembly 1 through a first connecting piece 22. The control circuit board 3 is fixed in the second inner cavity 102. The control circuit board 3 is provided with a second bus 32, and the second bus 32 is fixed to the shell assembly 1 through a second connecting piece 33. The first bus 21 extends from the first inner cavity 101 to the second inner cavity 102 and is plugged into the second bus 32. The heating element 2 is communicatively connected to the control circuit board 3 through the first bus 21 and the second bus 32. The compressor 4 is arranged on the shell assembly 1 and is communicatively connected to the control circuit board 3.

[0037] Exemplarily, the heating chamber 103 is connected to an external heat exchange medium box to form a heat exchange circuit; the compressor 4, together with the condenser, evaporator, and expansion valve, forms a refrigerant circuit. In a complete refrigeration cycle, the compressor 4 compresses the low-temperature and low-pressure refrigerant into a high-temperature and high-pressure refrigerant, which enters the condenser to exchange heat with the external environment. After cooling, the refrigerant enters the expansion valve to reduce the pressure, and then the low-temperature and low-pressure refrigerant enters the evaporator to exchange heat with the internal environment of the vehicle, and then returns to the compressor 4 to complete a cycle. The heat exchange medium in the heat exchange medium box enters the heating chamber 103 for heating and is then discharged to the vehicle's heating system. After heat exchange in the heating system, it flows back into the heating chamber 103 to form a complete heating cycle.

[0038] In this embodiment, the first bus 21 extends from the first inner cavity 101 into the second inner cavity 102 and is plugged with the second bus 32. Compared with the traditional welding method, the plugging method makes the connection between the control circuit board 3 and the heating element 2 quick and convenient, and the disassembly and assembly operation is reliable and convenient, which is conducive to the production and maintenance of the entire device. In addition, the heating element 2 and the control circuit board 3 are connected through the first bus 21 and the second bus 32, so that the control circuit board 3 can control the communication of the heating element 2. The first bus 21 and the second bus 32 are both fixed on the shell assembly 1, so that the plugging stress originally acting on the heating element 2 and the control circuit board 3 is transferred to the shell assembly 1, avoiding the failure of the connection points of the heating element 2 and the control circuit board 3 and the solder joints thereon due to the large stress. At the same time, it can also resist the deformation of the connector caused by the vibration of the compressor 4 during operation, resulting in the large stress of the solder joints and failure, so that the overall electrical connection is reliable and stable.

[0039] In this embodiment, the shell assembly 1 includes a first shell portion 11, a second shell portion 12 and a third shell portion 13 which are arranged in sequence. The first shell portion 11 and the second shell portion 12 together enclose a first inner cavity 101, the second shell portion 12 and the third shell portion 13 together enclose a second inner cavity 102, and the heating element 2 and the second shell portion 12 together enclose a heating cavity 103. The first bus 21 and the heating element 2 are both fixed to the second shell portion 12 through the first connecting member 22, and the second bus 32 is fixed to the third shell portion 13 through the second connecting member 33.

[0040] In this embodiment, the first shell portion 11 and the second shell portion 12 together form a first inner cavity 101, the second shell portion 12 and the third shell portion 13 together form a second inner cavity 102, the heating element 2 is arranged in the first inner cavity 101, and the control circuit board 3 is arranged in the second inner cavity 102. The above-mentioned structural arrangement is equivalent to using three shell portions to enclose two inner cavities. Compared with the traditional integrated device in which the heating element 2 and the control circuit board are independently arranged in their respective shells, the size of the integrated device can be further reduced, the space occupancy can be further reduced, and it can be more suitable for the layout inside the vehicle in actual applications.

[0041] In this embodiment, the control circuit board 3 is connected to the compressor 4 in communication, and can control the operation of the compressor 4. The control circuit board 3 is connected to the heating element 2 in communication, and can control the heating element 2 to heat.

[0042] In this embodiment, a through hole 124 is formed on the second shell portion 12 , and the first bus 21 passes through the through hole 124 and extends into the second inner cavity 102 and is plugged into the control circuit board 3 .

[0043] Specifically, the second shell 12 is provided with a liquid inlet 122 and a liquid outlet 123 connected to the heating chamber 103. The heat exchange medium can enter the heating chamber 103 through the liquid inlet 122 for heating and then be discharged to the vehicle's heating system through the liquid outlet 123.

[0044] Specifically, the compressor 4 is fixedly disposed on the third shell portion 13. Optionally, the shell of the compressor 4 can be fixedly disposed on the third shell portion 13 by a connecting member such as bolts.

[0045] Specifically, the compressor 4 has an air intake port 41 and an air discharge port 42 , and the air intake port 41 is located closer to the third shell portion 13 than the air discharge port 42 .

[0046] Specifically, the air intake port 41 is closer to the third shell portion 13 than the air exhaust port 42, that is, the air intake port 41 is closer to the control circuit board 3 than the air exhaust port 42, that is, the control circuit board 3 is arranged corresponding to the low-pressure air intake side of the refrigerant of the compressor 4. In this way, the control circuit board 3 is close to the refrigerant inlet side of the compressor 4, and the control circuit board 3 can also be effectively cooled by the low-temperature refrigerant, further improving the heat dissipation effect.

[0047] Optionally, the compressor 4 may be a rotary compressor, a swash plate compressor, a scroll compressor or a piston compressor, etc.

[0048] In this embodiment, the heating element 2 and the first busbar 21 are fixed to the second shell 12 through the first connecting member 22. The first busbar 21 is provided with a first connecting hole 211, the heating element 2 is provided with a second connecting hole 23, the second shell 12 is provided with a third connecting hole 121, and the first connecting member 22 penetrates the first connecting hole 211, the second connecting hole 23 and the third connecting hole 121 and is fixedly connected. The heating element 2 and the first busbar 21 are fixed to the second shell 12 through the first connecting member 22.

[0049] Optionally, the first connecting member 22 includes a first bolt, the third connecting hole 121 is set as a threaded hole, the first bolt passes through the first connecting hole 211, the second connecting hole 23 and is threadedly connected to the third connecting hole 121. In some other optional embodiments, the first connecting member 22 also includes a bolt assembly, the bolt assembly includes a bolt and a nut, the third connecting hole 121 may not be set as a threaded hole, the bolt passes through the first connecting hole 211, the second connecting hole 23 and the third connecting hole 121 and is threadedly connected to the nut.

[0050] Specifically, the first connecting member 22 penetrates the heating element 2 and the first bus 21, and the heating element 2 and the first bus 21 are fixed together on the second shell 12, thereby eliminating the unevenness of the heating element 2 and the cumulative error of the dimensional chain during welding, improving the welding reliability, and reducing the possibility of deformation of the heating element 2 caused by the pressure of the heat exchange medium flowing through the heat exchange cavity during operation, resulting in large stress at the weld and failure.

[0051] Optionally, a plurality of the first connecting member 22 , the first connecting hole 211 , the second connecting hole 23 , and the third connecting hole 121 are provided in a one-to-one correspondence.

[0052] In this embodiment, the second busbar 32 is fixed to the third shell 13 through the second connector 33. The second busbar 32 has a fourth connector hole 321, the third shell 13 has a fifth connector hole 131, and the second connector 33 penetrates the fourth connector hole 321 and the fifth connector hole 131 for fixed connection.

[0053] In some other optional embodiments, the second connecting member further includes a bolt assembly, the bolt assembly includes a bolt and a nut, the fifth connecting hole 131 may not be set as a threaded hole, and the bolt passes through the fourth connecting hole 321 and the fifth connecting hole 131 and is threadedly connected to the nut.

[0054] Optionally, a plurality of the second connecting members 33 , the fourth connecting holes 321 , and the fifth connecting holes 131 are provided in a one-to-one correspondence.

[0055] In some optional embodiments, referring to Figure 4 As shown, the control circuit board 3 is provided with a conductive plug terminal 31, the first bus bar 21 passes through the second shell 12 and is plugged into the conductive plug terminal 31, and the heating element 2 is connected to the control circuit board 3 through the first bus bar 21 and the conductive plug terminal 31. Such a configuration has a simple structure, is easy to disassemble and assemble, and does not require complex welding operations.

[0056] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A thermal management integrated device, characterized in that: include: A housing assembly (1) having a first inner cavity (101) and a second inner cavity (102); A heating element (2) is disposed in the first inner cavity (101) and encloses the first inner cavity (101) together to form a heating cavity (103); a first busbar (21) is disposed on the heating element (2); and the first busbar (21) is fixed to the housing assembly (1) via a first connecting element (22); A control circuit board (3) is fixedly arranged in the second inner cavity (102); a second bus bar (32) is arranged on the control circuit board (3); the second bus bar (32) is fixed to the housing assembly (1) via a second connecting member (33); the first bus bar (21) extends from the first inner cavity (101) into the second inner cavity (102) and is plugged into the second bus bar (32); the heating element (2) is communicatively connected to the control circuit board (3) via the first bus bar (21) and the second bus bar (32); A compressor (4) is arranged on the housing assembly (1) and is communicatively connected to the control circuit board (3).

2. The thermal management integrated device according to claim 1, characterized in that: The shell assembly (1) comprises a first shell portion (11), a second shell portion (12) and a third shell portion (13) which are arranged in sequence; the first shell portion (11) and the second shell portion (12) together enclose a first inner cavity (101); the second shell portion (12) and the third shell portion (13) together enclose a second inner cavity (102); the heating element (2) and the second shell portion (12) together enclose the heating cavity (103); the first busbar (21) and the heating element (2) are both fixed to the second shell portion (12) via the first connecting member (22); and the second busbar (32) is fixed to the third shell portion (13) via the second connecting member (33).

3. The thermal management integrated device according to claim 2, characterized in that: The first busbar (21) is provided with a first connection hole (211), the heating element (2) is provided with a second connection hole (23), the second shell (12) is provided with a third connection hole (121), and the first connection element (22) passes through the first connection hole (211), the second connection hole (23) and the third connection hole (121) for fixed connection.

4. The thermal management integrated device according to claim 3, characterized in that: The first connecting member (22) comprises a first bolt, the third connecting hole (121) is configured as a threaded hole, the first bolt passes through the first connecting hole (211), and the second connecting hole (23) is threadedly connected to the third connecting hole (121).

5. The thermal management integrated device according to claim 2, characterized in that: The second busbar (32) is provided with a fourth connection hole (321), the third shell portion (13) is provided with a fifth connection hole (131), and the second connection member (33) passes through the fourth connection hole (321) and the fifth connection hole (131) for fixed connection.

6. The thermal management integrated device according to claim 5, characterized in that: The second connecting member (33) comprises a second bolt, the fifth connecting hole (131) is configured as a threaded hole, and the second bolt passes through the fourth connecting hole (321) and is threadedly connected to the fifth connecting hole (131).

7. The thermal management integrated device according to claim 2, characterized in that: The control circuit board (3) is provided with a conductive plug terminal (31); the first bus bar (21) passes through the second shell (12) and is plugged into the conductive plug terminal (31); the heating element (2) is communicatively connected to the control circuit board (3) via the first bus bar (21) and the conductive plug terminal (31).

8. The thermal management integrated device according to claim 2, characterized in that: The second shell portion (12) is provided with a liquid inlet (122) and a liquid outlet (123) which are connected to the heating chamber (103).

9. The thermal management integrated device according to claim 2, characterized in that: The compressor (4) is fixedly arranged on the third shell portion (13).

10. The thermal management integrated device according to claim 9, characterized in that: The compressor (4) has an air intake port (41) and an air discharge port (42), and the air intake port (41) is located on a side closer to the third shell portion (13) than the air discharge port (42).

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