CN114679069A - Power unit and high integration device with same - Google Patents
Power unit and high integration device with same Download PDFInfo
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- CN114679069A CN114679069A CN202210112601.6A CN202210112601A CN114679069A CN 114679069 A CN114679069 A CN 114679069A CN 202210112601 A CN202210112601 A CN 202210112601A CN 114679069 A CN114679069 A CN 114679069A
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- 230000010354 integration Effects 0.000 title claims abstract description 20
- 230000017525 heat dissipation Effects 0.000 claims abstract description 108
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 46
- 229910052802 copper Inorganic materials 0.000 claims abstract description 46
- 239000010949 copper Substances 0.000 claims abstract description 46
- 239000003990 capacitor Substances 0.000 claims abstract description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 50
- 239000000498 cooling water Substances 0.000 claims description 13
- 238000003825 pressing Methods 0.000 claims description 10
- 239000000110 cooling liquid Substances 0.000 claims description 6
- 230000003993 interaction Effects 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 4
- 238000004806 packaging method and process Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract 1
- 238000013461 design Methods 0.000 description 11
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- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- 238000005219 brazing Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000008358 core component Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
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- 229920000647 polyepoxide Polymers 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/003—Constructional details, e.g. physical layout, assembly, wiring or busbar connections
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
- H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
- H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2089—Modifications to facilitate cooling, ventilating, or heating for power electronics, e.g. for inverters for controlling motor
- H05K7/20927—Liquid coolant without phase change
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
Abstract
The application discloses power unit and have its high integrated device, power unit includes: the upper side of the heat dissipation module is integrated with a direct current copper bar and an alternating current copper bar to realize current input of the motor controller; the power module is fixed on the side surface of the heat dissipation module, and heat dissipation of the power module is realized through the heat dissipation module; the sensing module is arranged on the side surface of the heat dissipation module through a bracket and used for carrying out current detection; and the driving circuit board is arranged on the lower side of the heat dissipation module and can receive the current signal of the sensing module, so that the motor controller can control the motor. The technical problems that in the prior art, due to the fact that a power module radiator occupies a large space, a direct-current bus capacitor is poor in heat dissipation performance and large in size due to the fact that heat is dissipated passively through air, and further a motor controller is large in size, heavy in weight, low in integration level and low in power density are solved.
Description
Technical Field
The application relates to the technical field of power assemblies, in particular to a power unit and a high integration device with the same.
Background
The motor controller is used as a core component of the new energy automobile, and the performance of the motor controller directly influences the comfort, reliability and energy consumption of the whole automobile. The power semiconductor device is a core component of a motor controller, and a main circuit inverter of a traditional motor controller mostly adopts a silicon-based Insulated Gate Bipolar Transistor (IGBT for short) scheme. In recent years, third-generation power semiconductor materials typified by SiC have been widely used in the field of new energy automobiles.
Meanwhile, integration, high efficiency, miniaturization, light weight, low cost and high reliability are development trends of motor controllers, especially miniaturization and light weight, which are important targets for the next development, and the aim is to improve the peak power while continuously reducing the volume and the weight of the motor controller by improving the integration level of the motor controller and adopting a high-performance SiC power module.
At present, a motor controller adopting a SiC power module generally adopts a cooling design for the SiC power module by adopting two or more layers of radiators, and a radiating structure generally occupies larger internal space; in addition, the direct current bus capacitor generally performs air heat dissipation through a plastic shell, so that the direct current bus capacitor also needs a larger volume, and how to perform high-integration research on the SiC power module is still the main research direction.
However, in the prior art, the power module radiator occupies a large space, and the direct current bus capacitor passively radiates heat through air to cause poor heat radiation performance and large volume, so that the motor controller has the technical problems of large volume, large weight, low integration level and low power density.
Disclosure of Invention
The technical purpose that this application embodiment will reach is to provide a power unit and have its high integrated device for there is because power module radiator occupation space is great among the solution prior art, and direct current bus-bar capacitance leads to the fact heat dispersion poor, bulky through the passive heat dissipation of air, and then leads to the fact the motor controller bulky, heavy, the integrated level is not high, the technical problem that power density is low.
In order to solve the above problem, embodiments of the present application provide a power unit and a highly integrated device having the same. Wherein the power unit includes: the heat dissipation module is used for dissipating heat; the direct-current copper bar is integrally arranged on the upper side of the heat dissipation module and used for realizing direct-current input of the motor controller; the alternating current copper bar is integrally arranged on the upper side of the heat dissipation module and is used for realizing the alternating current input of the motor; the power module is fixed on the side surface of the heat dissipation module, and heat dissipation of the power module is realized through the heat dissipation module; the sensing module is connected with the heat dissipation module through a support and used for detecting the current of the alternating current copper bar; and the driving circuit board is arranged on the lower side of the heat dissipation module, is connected with the power module, and can receive the current signal transmitted by the sensing module to realize the control of the motor controller on the motor.
Preferably, the heat dissipation module includes:
a capacitor core;
the shell is provided with an accommodating space for packaging the capacitor core, and a cooling water channel of the heat dissipation module is externally embedded in the side surface of the outer wall of the shell;
and the water channel cover plate is used for sealing a cooling water channel arranged on the outer wall of the shell.
Preferably, the waterway cover plate further comprises:
the first opposite cover plate is welded on the first opposite side surface of the shell and is provided with a first water inlet and a first water outlet, so that the inflow and the outflow of cooling liquid are realized;
a second opposing cover plate welded to a second opposing side of the housing, wherein the first opposing side and the second opposing side do not overlap.
Preferably, the power modules are respectively fixed on the surface of the second opposite cover plate through elastic pressing plates.
Preferably, the power module further includes: the device comprises a direct current terminal, an alternating current terminal and a signal pin;
the direct current terminal is connected with an output direct current wiring terminal of the heat dissipation module and used for realizing direct current output of the power module;
The alternating current terminal is connected with the alternating current copper bar and is used for realizing alternating current input of the motor;
the signal pin is welded on the driving circuit board to realize the driving control of the power module.
Preferably, one end of the direct current copper bar is connected with the input direct current wiring terminal of the heat dissipation module, and the other end of the direct current copper bar is connected with the battery, so that direct current input of the motor controller is achieved.
Another preferred embodiment of the present application provides a highly integrated device including: an integrated housing and a power unit as described above;
the integrated shell and the power unit are detachably assembled and used for realizing a power assembly.
Preferably, the high integration apparatus as described above, wherein said integrated housing further comprises:
the second water inlet is connected with the first water inlet;
and the second water outlet is connected with the first water outlet.
Preferably, the highly integrated device as described above, further comprising:
and the direct current connector is connected with the direct current copper bar to realize direct current input of the power unit.
Preferably, the highly integrated device as described above, further comprising:
And the external signal connector is connected with the signal connector of the driving circuit board, so that the control signal interaction between the vehicle control unit and the power unit is realized.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
the application provides a power unit and a high integration device with the same. Wherein the apparatus comprises: the heat dissipation module is used for dissipating heat; the direct-current copper bar is integrally arranged on the upper side of the heat dissipation module and used for realizing direct-current input of the motor controller; the alternating current copper bar is integrally arranged on the upper side of the heat dissipation module and is used for realizing the alternating current input of the motor; the power module is fixed on the side surface of the heat dissipation module, and heat dissipation of the power module is realized through the heat dissipation module; the sensing module is connected with the radiating module through a bracket and used for detecting the current of the alternating current copper bar; and the driving circuit board is arranged on the lower side of the heat dissipation module, is connected with the power module, and can receive the current signal transmitted by the sensing module to realize the control of the motor controller on the motor. The technical problems that in the prior art, due to the fact that the power module radiator occupies a large space, the direct-current bus capacitor is poor in heat dissipation performance and large in size due to the fact that heat is dissipated passively through air, and therefore a motor controller is large in size, heavy in weight, low in integration level and low in power density are solved. The integrated design is carried out through the optimized arrangement and the heat dissipation structure, and the miniaturization and the compactness are realized, so that the capacitance volume of the direct current bus is reduced, and the heat dissipation performance is improved.
Drawings
Fig. 1 is a schematic front structure diagram of a power unit in an embodiment of the present application.
Fig. 2 is a schematic diagram of a back structure of a power unit in an embodiment of the present application;
FIG. 3 is a schematic cross-sectional view of a power unit according to an embodiment of the present disclosure;
fig. 4 is a schematic structural diagram of a heat dissipation module of a power unit in an embodiment of the present application;
FIG. 5 is a schematic view of an assembly structure of a power unit and an integrated housing according to an embodiment of the present disclosure;
fig. 6 is a schematic structural diagram of a highly integrated device having the power unit in the embodiment of the present application.
[ description of reference ]
110. A heat dissipation module 110; 111. a housing; 112. a first counter cover plate; 113. a second opposing cover plate; 1121. a first water inlet; 1122. a first water outlet; 115. a capacitor core; 101. a power module; 1011. a DC terminal; 1012. an AC terminal; 1013. a signal pin; 102. an elastic pressure plate; 103. a direct current copper bar; 104. alternating current copper bars; 105. a sensing module; 106. a support; 120. a drive circuit board; 121. a signal connector; 200 an integrated housing; 201. a second water inlet; 202. a second water outlet; 208. a DC connector; 209. and an external signal connector.
Detailed Description
To make the technical problems, technical solutions and advantages to be solved by the present application clearer, the following detailed description is made with reference to the accompanying drawings and specific embodiments. In the following description, specific details such as specific configurations and components are provided only to help the embodiments of the present application be fully understood. Accordingly, it will be apparent to those skilled in the art that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the present application. In addition, descriptions of well-known functions and constructions are omitted for clarity and conciseness.
It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
In various embodiments of the present application, it should be understood that the sequence numbers of the following processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.
It should be understood that the term "and/or" herein is merely one type of association relationship that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
In the embodiments provided herein, it should be understood that "B corresponding to a" means that B is associated with a from which B can be determined. It should also be understood that determining B from a does not mean determining B from a alone, but may also be determined from a and/or other information.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a single embodiment.
The application provides a power unit and have its high integrated device, has solved and has existed because power module radiator occupation space is great among the prior art, and direct current bus electric capacity leads to the fact heat dispersion poor, bulky through the passive heat dissipation of air, and then causes motor controller bulky, heavy, the integrated level is not high, the technical problem that power density is low.
In view of the above technical problems, the technical solution provided by the present application has the following general idea:
in an embodiment of the present application, a power unit and a highly integrated device having the same are provided, where the power unit includes: the heat dissipation module is used for dissipating heat; the direct-current copper bar is integrally arranged on the upper side of the heat dissipation module and used for realizing direct-current input of the motor controller; the alternating current copper bar is integrally arranged on the upper side of the heat dissipation module and is used for realizing the alternating current input of the motor; the power module is fixed on the side surface of the heat dissipation module, and heat dissipation of the power module is realized through the heat dissipation module; the sensing module is connected with the heat dissipation module through a support and used for detecting the current of the alternating current copper bar; and the driving circuit board is arranged on the lower side of the heat dissipation module, is connected with the power module, and can receive the current signal transmitted by the sensing module to realize the control of the motor controller on the motor. The integrated design is carried out through the optimized arrangement and the heat dissipation structure, so that the volume of the direct current bus capacitor is reduced, the technical effect of improving the heat dissipation performance is achieved, and the technical problems that the heat dissipation performance is poor and the size is large due to the fact that the power module radiator occupies a large space, the direct current bus capacitor passively dissipates heat through air, and then the motor controller is large in size, large in weight, low in integration level and low in power density are solved. The miniaturization, the compact design and the clean assembly of the power assembly are realized, and the control quality of the motor controller is improved.
Example 1
As shown in fig. 1, an embodiment of the present application provides a power cell and a highly integrated device having the same, wherein the power cell is preferably an SiC power cell, and the power cell includes: the heat dissipation module 110, the heat dissipation module 110 is used for dissipating heat; the direct-current copper bar 103 is integrally arranged on the upper side of the heat dissipation module 110, and the direct-current copper bar 103 is used for realizing direct-current input of a motor controller; the alternating current copper bar 104 is integrally arranged on the upper side of the heat dissipation module 110, and the alternating current copper bar 104 is used for realizing the alternating current input of the motor; the power module 101 is fixed on the side surface of the heat dissipation module 110 through an elastic pressing plate, and the power module 101 dissipates heat through the heat dissipation module 110; the sensing module 105 is connected with the heat dissipation module 110 through a bracket 106, and is used for detecting the current of the alternating-current copper bar 104; and the driving circuit board 120 is arranged on the lower side of the heat dissipation module 110, is connected with the power module 101, and can receive the current signal transmitted by the sensing module to realize the control of the motor controller on the motor.
In particular, the present application proposes a novel power cell. Furthermore, the power unit directly encapsulates the capacitor core in the shell, and cooling water channels are designed on the front side, the rear side, the left side and the right side of the shell to realize the heat dissipation of the two groups of power modules; meanwhile, a direct-current copper bar and an alternating-current copper bar are integrated on the upper side of the direct-current bus capacitor, a driving and controlling integrated circuit board is arranged on the lower side of the direct-current bus capacitor, and a triple current sensor is installed on the side face of the direct-current bus capacitor through a support, so that a high-integration-level modularized power unit is realized. As shown in fig. 1, the heat dissipation module 110 is a heat dissipation module integrated based on a dc bus capacitor, and the heat dissipation module 110 includes a packaged dc bus capacitor and a corresponding cooling water channel, so that the heat dissipation module 110 has a miniaturized heat dissipation structure, and the heat dissipation structure is prevented from being bulky and affecting the integration level. The power module 101 is a SiC power module and is fixed on the water channel cover plate 113 through the elastic pressing plate 102, the sensing module 105 is a sensing module integrally provided with a sensor, preferably, the sensor in the sensing module 105 is a triple current sensor, and the sensing module 105 is installed on the water channel cover plate 112 of the heat dissipation module 110 through the bracket 106 to detect the current of the alternating current copper bar 104 and transmit the signal to the driving circuit board 120, wherein the driving circuit board 120 can arrange the driving circuit board 120 above or at the side of the heat dissipation module 110 according to the type selection of the power module 101 to realize a similar integrated structure, preferably, as shown in fig. 2, in the present application, the driving circuit board is arranged below the heat dissipation module and connected with the power module 101, and through the adjustment of a current signal, and the motor controller controls the motor. The direct current copper bar 103 and the alternating current copper bar 104 are integrated on the upper side of the heat dissipation module 110, the driving circuit board 120 is arranged on the lower side, and the sensor module 105 is installed on the side face through the support 106, so that a high-integration modular assembly structure is realized.
Further, the heat dissipation module 110 includes: capacitive core body 115; a housing 111, wherein the housing 111 has an accommodating space for enclosing the capacitor core 115, and a cooling water channel of the heat dissipation module 110 is externally embedded in a side surface of an outer wall of the housing 111; and the water channel cover plate is used for sealing a cooling water channel arranged on the outer wall of the shell 111.
Further, the waterway cover plate further comprises: a first opposite cover plate 112, wherein the first opposite cover plate 112 is welded to the first opposite side surface of the housing 111, and the first opposite cover plate 112 is provided with a first water inlet 1121 and a first water outlet 1122, so as to realize the inflow and outflow of the cooling liquid; a second opposite cover plate 113, wherein the second opposite cover plate 113 is welded to a second opposite side of the housing 111, and the first opposite side and the second opposite side do not overlap.
Specifically, the heat dissipation module 110 has a cooling effect in the use of the motor controller, and has a high requirement for the structure of the heat dissipation module based on the high requirement of the appearance structure design of the motor controller, at present, the heat dissipation structure in the motor controller occupies a large internal space, and the encapsulated dc bus capacitor also performs air heat dissipation through the housing, so as shown in fig. 3, in the heat dissipation module 110 in the present application, the capacitor core 115 is encapsulated in the housing 111 through epoxy resin, and the housing 111 is of a hollow structure, and the housing 111 may be made of different materials, such as metal, plastic, and the like, preferably, the housing 111 is made of a metal material, which can improve the heat dissipation performance of the heat dissipation module 110. The accommodating space inside the casing 111 has the same size as the capacitor core for packaging, as shown in fig. 4, the cooling water channel on the outer wall of the casing 111 is of a peripheral embedded structure, and the water channel structural design of the casing 111 includes a water outlet and a water inlet, so that a first water inlet 1121 and a second water inlet 1122 are correspondingly required to be designed when the hollow cooling water channel is sealed, water channel cover plates are welded to the front, rear, left and right sides of the casing 111, and further, the first upright cover plate 112, i.e., the front and rear side water channel cover plates are welded to the casing 111 through friction stir welding or vacuum brazing; the second opposing cover plates 113, i.e., the left and right side waterway cover plates, are also welded to the housing 111 by friction stir welding or vacuum brazing. Since the first and second opposite cover plates 112 and 111 are oppositely designed according to four side surfaces of the housing 111.
In detail, the coolant at the first water inlet 1121 of the first opposing cover plate 112 uniformly flows into the pin-fin structure inside the waterway cover plate 113, presses the power module 101 thereon for heat exchange, and then takes away the heat through the first water outlet 1122 of the waterway cover plate 112. Meanwhile, heat dissipated by the capacitor core body 115 can exchange heat with the cooling liquid at the same time, so that the heat dissipation performance of the capacitor core body is improved, and the size of the capacitor core body can be reduced.
Further, the power modules 101 are respectively fixed on the surfaces of the second opposite cover plates 113 through elastic pressing plates 102.
Specifically, since the power module 101 is made of SiC as a semiconductor material, which has a high performance effect and can increase the peak power while reducing the volume and weight of the motor controller, the power module 101 employs a SiC power module, and the power module 101 is fixed to the surface of the second opposing cover plate 113 by the elastic pressing plate 102, and since the first opposing cover plate 112 and the second opposing cover plate 113 are disposed in opposition, the first opposing cover plate 112 may be a front-rear side surface or a left-right side surface; on the other hand, the second opposite cover plate can be a left side surface, a right side surface and a front side surface. After the first opposite cover plate 112 is provided with a water inlet and a water outlet, the power module 101 needs to be fixed to the second opposite cover plate 113 in a manner of being fixed according to the elastic pressing plate 102, when the cooling liquid from the first water inlet 1121 uniformly flows into a pin-fin structure on the inner side of the water channel cover plate, the elastic pressing plate 102 presses the power module 101 thereon to perform heat exchange, and then the heat is taken away through the first water outlet 1122, the elastic heat dissipation between the heat dissipation module 110 and the power module 101 can be fully exerted based on the manner of fixing the elastic pressing plate, so that the technical effect of improving the heat dissipation performance is achieved by optimizing the arrangement and the heat dissipation structure.
Further, the power module 101 further includes: the device comprises a direct current terminal, an alternating current terminal and a signal pin; the direct current terminal is connected with an output direct current binding post of the heat dissipation module and used for realizing direct current output of the power module 101; the alternating current terminal is connected with the alternating current copper bar and used for realizing alternating current input of the motor; the signal pin is welded on the driving circuit board to realize the driving control of the power module 101.
Furthermore, one end of the direct current copper bar is connected with an input direct current terminal of the heat dissipation module, and the other end of the direct current copper bar is connected with the battery, so that direct current input of the motor controller is achieved.
Specifically, as shown in fig. 1, the input dc terminal on the upper side of the heat dissipation module 110 is connected to the dc copper bar 103 through a bolt, and the other side of the dc copper bar 103 is connected to the battery through a dc connector, so as to implement dc input of the motor controller. The output dc terminal on the upper side of the dc bus capacitor assembly 110 is connected to the dc terminal 1011 of the power module 101 by a bolt, so as to realize dc output of the power module. The alternating current terminal of the power module 101 is connected with the alternating current copper bar 104 through a bolt, and the other side of the alternating current copper bar 104 is connected with a three-phase line of the motor, so that alternating current input of the motor is realized. The driving circuit board 120 is disposed below the dc bus capacitor assembly, that is, the heat dissipation module 110, and further, the signal pin 1013 of the power module 101 is welded on the driving circuit board 120, and the driving circuit board 120 is a main control driving integrated circuit board, so as to realize driving control of the power module 101. The main control and drive integrated circuit board 120 is provided with a plurality of signal connectors 121, and the signal connectors are connected with the current sensor, the motor rotary transformer and temperature sensor and the motor controller through signal wiring harnesses.
Example 2
Referring to fig. 5 and 6, the present application further provides a highly integrated device comprising: an integrated housing 200 and a power unit as described above;
wherein, the integrated shell 200 and the power unit are detachably assembled for realizing a power assembly.
Further, the integrated housing 200 further includes: a second water inlet 201, wherein the second water inlet 201 is connected with the first water inlet 1121; a second water outlet 202, wherein the second water outlet 202 is connected to the first water outlet 1122; the direct current connector 208 is connected with the direct current copper bar 103 to realize direct current input of the power unit; and the external signal connector 209 is connected with the signal connector of the driving circuit board 120, so that the interaction between the vehicle control unit and the power unit control signal is realized.
Specifically, the modular power unit can be mounted to the integrated housing 200 of the powertrain in an integrated manner, thereby realizing miniaturization, compact design and clean assembly of the powertrain. This embodiment is the assembly of the power unit with the integrated housing 200. As shown in fig. 5, the integrated housing 200 is obtained by integrating three independent housings, namely a motor controller, a motor and a speed reducer, so as to form a highly integrated housing structure, which can be formed by a die-casting process. The integrated shell 200 can save the connecting bolt, the sealing ring, the connecting water pipe and other structures of the original three independent shells through integrated design, and simultaneously reduces the volume of the power assembly. In a power assembly line, the power unit may be installed in the integrated housing 200 in a clean environment to prevent impurities from entering the circuit board, and then the motor and the internal parts of the speed reducer are assembled. When the integrated housing 200 is assembled with the power unit, the first water inlet 1121 of the power unit is connected with the second water inlet 201 of the integrated housing 200, and the first water outlet 1122 of the power unit is connected with the second water outlet 202 of the integrated housing 200.
Further, as shown in fig. 6, a high integration level power assembly is realized by the integrated housing 200 and the power unit, and an integrated chamber is defined by the integrated housing 200, the motor controller cover plate 205, the motor cover plate 206, and the reducer cover plate 207, wherein the power unit is installed in the motor controller chamber. The power assembly water inlet pipe 203 enters the power unit heat dissipation water channel through the water inlet 201 of the integrated shell inside the integrated shell, the power assembly water outlet pipe 204 flows out of the power unit heat dissipation water channel integrated shell 200 through the water outlet 202 of the integrated shell inside the integrated shell, and the power assembly water outlet pipe is also provided with a direct current connector 208 which is directly connected with the direct current copper bar 103 to realize direct current input of the power unit; the integrated housing 200 is further provided with an external signal connector 209, which is connected with the signal connector 121 through a low-voltage wire harness, so as to realize control signal interaction between the vehicle controller and the power unit, and solve the technical problems in the prior art that the heat radiator of the power module 101 occupies a large space, and the direct-current bus capacitor passively radiates heat through air to cause poor heat radiation performance and large volume, so that the motor controller is large in volume, heavy in weight, low in integration level and low in power density. The integrated design is carried out through the optimized arrangement and the heat dissipation structure, and the miniaturization and the compactness are realized, so that the capacitance volume of the direct current bus is reduced, and the heat dissipation performance is improved.
Example 3
In order to more clearly explain a technical solution of a power unit and a high integrated device having the same, an embodiment of the present application provides a method for using the power unit and the high integrated device having the same, which includes:
the capacitor core body 115 is packaged in the heat dissipation module 110, the basic shell body 111 of the heat dissipation structure is designed, a cooling water channel designed on the side surface of the outer wall of the shell body 111 is sealed by a water channel cover plate, a first opposite cover plate 112 is sealed on a first opposite side (front side and back side) of the shell body 111, a water inlet and a water outlet are designed to realize the inflow and outflow of a motor controller cooling liquid, a second opposite cover plate 113 is sealed on a second opposite side (left side and right side) of the shell body, the power module 101 is fixed on the second opposite cover plate 113 through the elastic pressing plate 102, so that the elastic heat dissipation of the heat dissipation module and the power module 101 is constructed, further, the high-integration-degree modularized assembly structure is realized through integrating the direct current copper bar 103 and the alternating current copper bar 104 on the upper side, arranging the driving circuit board 120 on the lower side, and installing the sensing module 105 through the bracket 106 on the side, based on the power unit after connection, further, a high-integration power assembly is realized according to the integrated shell 200 and the power unit, that is, an integrated cavity is enclosed by the integrated shell 200 and three cover plates, wherein the power unit is installed in a cavity of a motor controller. The power assembly water inlet pipe enters the power unit heat dissipation water channel through the second water inlet 201 in the integrated shell 200 inside the integrated shell, and the power assembly water outlet pipe 204 flows out of the power unit heat dissipation water channel through the water outlet 202 of the integrated shell inside the integrated shell. Therefore, efficient utilization of the heat dissipation water channel is achieved, miniaturization and compactness are achieved, and heat dissipation performance is improved while the capacitance volume of the direct current bus is reduced.
The technical scheme provided in the application at least has the following technical effects or advantages:
according to the power unit, the capacitor core is directly encapsulated in the metal shell, and cooling water channels are designed on the front side, the rear side, the left side and the right side of the shell to realize heat dissipation of the two groups of SiC power modules; the cooling water channel design of the capacitor metal shell can improve the heat dissipation performance of the capacitor core at the same time, and further can reduce the volume of the capacitor core.
The power unit that this application provided, integrated direct current copper bar of direct current bus electric capacity upside and exchange copper bar, downside arrange the integrative circuit board of drive control, side simultaneously through support mounting triple current sensor, realized the modular assembly structure of high integration.
The power unit that this application provided can also install in the integrated casing of power assembly with the mode of assembly, realizes the miniaturization of power assembly, compact design and clean assembly.
Further, the present application may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed.
It is further noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion.
While the foregoing is directed to the preferred embodiment of the present application, it will be appreciated by those skilled in the art that various changes and modifications may be made therein without departing from the principles of the application, and it is intended that such changes and modifications be covered by the appended claims.
Claims (10)
1. A power cell, comprising:
the heat dissipation module is used for dissipating heat;
the direct-current copper bar is integrated on the upper side of the heat dissipation module and used for realizing direct-current input of the motor controller;
the alternating current copper bar is integrated on the upper side of the heat dissipation module and used for realizing alternating current input of the motor;
the power module is fixed on the side surface of the heat dissipation module, and heat dissipation of the power module is realized through the heat dissipation module;
the sensing module is connected with the heat dissipation module through a support and used for detecting the current of the alternating current copper bar;
and the driving circuit board is arranged on the lower side of the heat dissipation module, is connected with the power module, and can receive the current signal transmitted by the sensing module to realize the control of the motor controller on the motor.
2. The power cell of claim 1, wherein the heat dissipation module comprises:
a capacitor core;
the shell is provided with an accommodating space for packaging the capacitor core, and a cooling water channel of the heat dissipation module is externally embedded in the side surface of the outer wall of the shell;
and the water channel cover plate is used for sealing a cooling water channel arranged on the outer wall of the shell.
3. The power unit as recited in claim 2, wherein said waterway cover plate further comprises:
the first opposite cover plate is welded on the first opposite side surface of the shell and is provided with a first water inlet and a first water outlet, so that the inflow and the outflow of cooling liquid are realized;
a second opposing cover plate welded to a second opposing side of the housing, wherein the first opposing side and the second opposing side do not overlap.
4. The power unit as claimed in claim 3, wherein the power modules are fixed to the surfaces of the second opposite cover plates, respectively, by elastic pressing plates.
5. The power cell of claim 4, wherein the power module further comprises: the device comprises a direct current terminal, an alternating current terminal and a signal pin;
The direct current terminal is connected with an output direct current wiring terminal of the heat dissipation module and used for realizing direct current output of the power module;
the alternating current terminal is connected with the alternating current copper bar and is used for realizing alternating current input of the motor;
and the signal pin is welded on the driving circuit board to realize the driving control of the power module.
6. The power unit according to claim 5, wherein one end of the DC copper bar is connected to the input DC terminal of the heat dissipation module, and the other end is connected to a battery, so as to realize DC input of the motor controller.
7. A highly integrated device, comprising: an integrated housing and power unit as claimed in any one of claims 1 to 5;
the integrated shell and the power unit are detachably assembled and are used for realizing a power assembly.
8. The high integration apparatus of claim 7, wherein the integrated housing further comprises:
the second water inlet is connected with the first water inlet;
and the second water outlet is connected with the first water outlet.
9. The high integration apparatus of claim 7, wherein the high integration apparatus further comprises:
And the direct current connector is connected with the direct current copper bar to realize direct current input of the power unit.
10. The high integration apparatus of claim 7, wherein the high integration apparatus further comprises:
and the external signal connector is connected with the signal connector of the driving circuit board, so that the control signal interaction between the vehicle control unit and the power unit is realized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210112601.6A CN114679069A (en) | 2022-01-29 | 2022-01-29 | Power unit and high integration device with same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210112601.6A CN114679069A (en) | 2022-01-29 | 2022-01-29 | Power unit and high integration device with same |
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| Publication Number | Publication Date |
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| CN114679069A true CN114679069A (en) | 2022-06-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210112601.6A Pending CN114679069A (en) | 2022-01-29 | 2022-01-29 | Power unit and high integration device with same |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115497744A (en) * | 2022-10-17 | 2022-12-20 | 臻驱科技（上海）有限公司 | Power assembly of bus capacitor integrated alternating current copper bar and manufacturing method thereof |
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2022
- 2022-01-29 CN CN202210112601.6A patent/CN114679069A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115497744A (en) * | 2022-10-17 | 2022-12-20 | 臻驱科技（上海）有限公司 | Power assembly of bus capacitor integrated alternating current copper bar and manufacturing method thereof |
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