CN114696724A

CN114696724A - Filtering and power unit of motor controller

Info

Publication number: CN114696724A
Application number: CN202011615437.8A
Authority: CN
Inventors: 饶胜; 葛亮; 李顺全
Original assignee: Baoneng Automobile Group Co Ltd
Current assignee: Baoneng Automobile Group Co Ltd
Priority date: 2020-12-30
Filing date: 2020-12-30
Publication date: 2022-07-01

Abstract

The invention discloses a filtering and power unit of a motor controller, which comprises: a plurality of switching devices; a plurality of capacitors; the cooling mechanism limits a first installation space and a second installation space, the switch device is arranged in the first installation space, the capacitor is arranged in the second installation space, and the cooling mechanism is suitable for cooling the switch device and the capacitor. From this, through the filtering and the power unit of this application, can cool off switching device and electric capacity, can improve the temperature toleration of switching device and electric capacity, improve the life of switching device and electric capacity, thereby can improve machine controller's output current, and then can improve machine controller's power, and, can make machine controller's structural layout compact, can reduce machine controller's volume and weight, can improve machine controller's power density, thereby can increase the continuation of the journey mileage of vehicle, in addition, can also reduce machine controller's manufacturing cost.

Description

Filtering and power unit of motor controller

Technical Field

The invention relates to the field of motor controllers, in particular to a filtering and power unit of a motor controller.

Background

In the related art, the IGBT module in the motor controller occupies a large space in a manner of using 3 or 3 integral multiples in combination, which may affect the compactness of the structural layout in the motor controller, may cause the motor controller to have a large volume and a large weight, may result in the power reduction of the motor controller, may also affect the application range of the motor controller, is not favorable for the lightweight design of the vehicle, may also waste the electric quantity of the battery, and may affect the driving range of the vehicle.

And, the cost of the IGBT module in the machine controller is higher with the use mode of 3 in 1 combination module, if by six IGBT single tubes use in combination in groups, the requirement on welding process level is high to current welding technique and equipment ability in China can't guarantee the uniformity and the reliability of product, dangerous phenomena such as pipe explosion can appear in the use.

In addition, the base material of the film capacitor in the motor controller can resist 105 ℃, the film capacitor has the lowest temperature resistance among devices in the motor controller, and the low temperature resistance of the film capacitor can cause the low power of the motor controller.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, an object of the present invention is to provide a filter and power unit of a motor controller, which can cool a switching device and a capacitor, improve temperature resistance of the switching device and the capacitor, and prolong service lives of the switching device and the capacitor, so as to improve output current of the motor controller, and further improve power of the motor controller, and further, make a structural layout of the motor controller compact, reduce a volume and a weight of the motor controller, and improve a power density of the motor controller, so as to increase a driving range of a vehicle, and in addition, reduce a production cost of the motor controller.

The filtering and power unit of the motor controller according to the present invention comprises: a plurality of switching devices; a plurality of capacitors; the cooling mechanism limits a first installation space and a second installation space, the switch devices are arranged in the first installation space, the capacitors are arranged in the second installation space, and the cooling mechanism is suitable for cooling the switch devices and the capacitors.

According to the filtering and power unit of the motor controller, the switching device and the capacitor can be cooled, the temperature resistance of the switching device and the capacitor can be improved, the service life of the switching device and the capacitor can be prolonged, the output current of the motor controller can be improved, the power of the motor controller can be improved, the structural layout of the motor controller can be compact, the size and the weight of the motor controller can be reduced, the power density of the motor controller can be improved, the driving range of a vehicle can be increased, and the production cost of the motor controller can be reduced.

In some examples of the present invention, the cooling mechanism includes a plurality of cooling pipes arranged in series in a width direction of the cooling pipes and spaced apart to form an installation space between adjacent two of the cooling pipes, the installation space including the first installation space and the second installation space.

In some examples of the invention, a plurality of limiting blocks are sleeved on each cooling pipe, and the limiting blocks on each cooling pipe are spaced apart in the length direction of the cooling pipe; the switch device is arranged between two adjacent limiting blocks on the cooling pipe for limiting the first installation space, and the limiting blocks are suitable for limiting the switch device in the length direction of the cooling pipe; the capacitor is arranged between two adjacent limiting blocks on the cooling pipe for limiting the second mounting space, and the limiting blocks are suitable for limiting the capacitor in the length direction of the cooling pipe.

In some examples of the invention, the cooling mechanism further comprises: the liquid inlet end and the liquid outlet end, the liquid inlet end is equipped with the inlet, the liquid outlet end is equipped with the liquid outlet, every the cooling tube with the relative first end of liquid inlet end all with the inlet intercommunication, every the cooling tube with the relative second end of liquid outlet end all with the liquid outlet intercommunication.

In some examples of the invention, the inlet end comprises: the liquid inlet body defines a liquid inlet and storage space, one end of each of the first mounting sleeves is communicated with the liquid inlet and storage space, and the other end of each of the first mounting sleeves is sleeved outside the corresponding cooling pipe; the first installation sleeves and the cooling pipes are arranged in a one-to-one correspondence mode.

In some examples of the invention, the inlet end further comprises: and one end of the inlet pipe is communicated with the liquid inlet and storage space.

In some examples of the invention, the liquid outlet end comprises: the liquid outlet body defines a liquid outlet and storage space, one end of each of the second mounting sleeves is communicated with the liquid outlet and storage space, and the other end of each of the second mounting sleeves is sleeved outside the corresponding cooling pipe; the second installation sleeves and the cooling pipes are arranged in a one-to-one correspondence mode.

In some examples of the invention, the liquid outlet end further comprises: and one end of the outlet pipe is communicated with the liquid outlet and storage space.

In some examples of the invention, each of the switching devices comprises a switching body, each of the capacitors comprises a capacitor body, and the outer contour dimension of the switching body is the same as the outer contour dimension of the capacitor body.

In some examples of the present invention, the filtering and power unit of the motor controller further includes: a first conductive connection bank connected to a negative electrode of each of the switching devices and a negative electrode of each of the capacitors; a second conductive connection bar connected to an anode of each of the switching devices and an anode of each of the capacitors; and the third conductive connection row is connected with the output electrodes of two adjacent switching devices.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is an exploded view of a filtering and power cell according to an embodiment of the present invention;

FIG. 2 is a top view of a filtering and power cell according to an embodiment of the present invention;

FIG. 3 is a front view of a filtering and power cell according to an embodiment of the present invention;

FIG. 4 is an isometric view of a filtering and power cell according to an embodiment of the invention;

FIG. 5 is a side view of a filtering and power cell according to an embodiment of the present invention;

FIG. 6 is a top view of a first row of electrically conductive connections according to an embodiment of the present invention;

FIG. 7 is an isometric view of a first row of conductive connections according to an embodiment of the invention;

FIG. 8 is a front view of a first electrically conductive connection bank in accordance with an embodiment of the present invention;

FIG. 9 is a front view of a second electrically conductive connection bank in accordance with an embodiment of the present invention;

FIG. 10 is an isometric view of a second row of conductive connections according to an embodiment of the invention;

FIG. 11 is a side view of a second electrically conductive connection bank in accordance with an embodiment of the present invention;

FIG. 12 is a schematic view of a third electrically conductive connection bank in accordance with an embodiment of the present invention;

FIG. 13 is an isometric view of a third row of conductive connections according to an embodiment of the invention;

FIG. 14 is a front view of a capacitor according to an embodiment of the present invention;

FIG. 15 is a side view of a capacitor according to an embodiment of the present invention;

FIG. 16 is a top view of a capacitor according to an embodiment of the invention;

FIG. 17 is an isometric view of a capacitor according to an embodiment of the invention;

fig. 18 is a front view of a switching device according to an embodiment of the present invention;

FIG. 19 is a rear view of a switching device according to an embodiment of the present invention;

fig. 20 is an isometric view of a switching device in accordance with an embodiment of the invention;

FIG. 21 is a front view of a feed end according to an embodiment of the invention;

FIG. 22 is a top view of a feed end according to an embodiment of the invention;

FIG. 23 is an isometric view of a feed end according to an embodiment of the invention;

FIG. 24 is a cross-sectional view of a cooling tube according to an embodiment of the present invention;

FIG. 25 is a schematic view of a stopper according to an embodiment of the present invention.

Reference numerals:

a filtering and power unit 100;

a switching device 10; a switch body 11; a first negative electrode 12; a first positive electrode 13; an output electrode 14;

a capacitor 20; a capacitor body 21; a second anode 22; a second positive electrode 23;

a cooling mechanism 30; the first installation space 31; the second installation space 32; a cooling pipe 33; the mounting space 34; a first flow passage 35; a second flow passage 36; a third flow passage 37; a partition 38;

a stop block 40; a first stopper portion 41; a second stopper 42; a third stopper portion 43; a spacing space 44;

a liquid inlet end 50; a liquid inlet 51; a liquid inlet body 52; a first mounting sleeve 53; a liquid inlet and storage space 54; an inlet pipe 55;

a liquid outlet end 60; a liquid outlet 61; a liquid outlet body 62; a second mounting sleeve 63; a liquid outlet and storage space 64; an outlet pipe 65;

a first electrically conductive connection bank 70; a first body 71; a negative electrode connecting end 72; a power supply negative input 73;

a second electrically conductive connection bank 80; a second body 81; a first positive electrode connection end 82; a third body 83; a second positive connection terminal 84; a power supply positive input 85;

a third electrically conductive connection bank 90; a fourth body 91; a connecting portion 92; a first output stage connection 93; a current output 94.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

The filtering and power unit 100 of the motor controller according to an embodiment of the present invention is described below with reference to fig. 1 to 25.

As shown in fig. 1 to 25, the filtering and power unit 100 according to the embodiment of the present invention includes: the cooling mechanism 30, a plurality of switching devices (silicon carbide single tubes) 10 and a plurality of capacitors 20, the switching devices 10 may be configured as IGBT single tubes, the cooling mechanism 30 defines a first installation space 31 and a second installation space 32, the plurality of switching devices 10 are disposed in the first installation space 31, the plurality of capacitors 20 are disposed in the second installation space 32, the cooling mechanism 30 is adapted to cool the switching devices 10 and the capacitors 20, it should be noted that the cooling mechanism 30 can define the first installation space 31, the plurality of switching devices 10 can be disposed in the first installation space 31, the cooling mechanism 30 can define the second installation space 32, the plurality of capacitors 20 can be disposed in the second installation space 32, and the cooling mechanism 30 can cool the plurality of switching devices 10 and the plurality of capacitors 20 simultaneously.

Wherein, through setting up a plurality of switching devices 10 in the first installation space 31 that cooling mechanism 30 was injectd, set up a plurality of electric capacity 20 in the second installation space 32 that cooling mechanism 30 was injectd, can cool off a plurality of switching devices 10 and a plurality of electric capacity 20 simultaneously, can improve the temperature toleration of a plurality of switching devices 10 and a plurality of electric capacity 20, thereby can reduce switching device 10 and electric capacity 20's inefficacy risk, can improve switching device 10 and electric capacity 20's life, can also improve motor controller's output current, and then can improve motor controller's power.

In addition, by disposing the plurality of switching devices 10 and the plurality of capacitors 20 in the cooling mechanism 30, the plurality of switching devices 10 and the plurality of capacitors 20 can be integrally disposed together, and the filter and power unit 100 can be made compact in structural layout, so that the motor controller can be made compact in structural layout, the power density of the motor controller can be improved, and the driving range of the vehicle can be increased.

From this, through filtering and power unit 100 of this application, can cool off switching device 10 and electric capacity 20, can improve switching device 10 and electric capacity 20's temperature toleration, improve switching device 10 and electric capacity 20's life, thereby can improve motor controller's output current, and then can improve motor controller's power, and, can reduce motor controller's volume and weight, can make motor controller's structural layout compact, can improve motor controller's power density, thereby can increase the continuation of the journey of vehicle, in addition, can also reduce motor controller's manufacturing cost.

In some embodiments of the present invention, as shown in fig. 1 to 3 and 24, the cooling mechanism 30 may include a plurality of cooling pipes 33, the plurality of cooling pipes 33 may be sequentially arranged and spaced apart in a width direction of the cooling pipes 33 to form an installation space 34 between adjacent two cooling pipes 33, and the installation space 34 may include a first installation space 31 and a second installation space 32. It should be explained that the number of the cooling pipes 33 may be provided in plural, and in the front-rear direction shown in fig. 1, the plural cooling pipes 33 may be arranged in sequence and spaced apart, that is, the plural cooling pipes 33 may be arranged in sequence and spaced apart in the width direction of the cooling pipes 33, an installation space 34 may be formed between every adjacent two cooling pipes 33, and the installation space 34 may include the first installation space 31 and the second installation space 32. Further, the number of the cooling pipes 33 may be seven, six installation spaces 34 are defined by seven cooling pipes 33, in the front-rear direction in fig. 1, three installation spaces 34 located at the front side may be configured as first installation spaces 31, three installation spaces 34 located at the rear side of three first installation spaces 31 are configured as second installation spaces 32, the plurality of switching devices 10 in each first installation space 31 are sequentially arranged in the length direction of the cooling pipe 33, the plurality of capacitors 20 in each second installation space 32 are sequentially arranged in the length direction of the cooling pipe 33, the switching devices 10 are disposed in the first installation spaces 31, and the plurality of capacitors 20 are disposed in the second installation spaces 32, so that heat can be directly radiated from the front and rear sides of the switching devices 10 and the capacitors 20, the cooling effect of the switching devices 10 and the capacitors 20 by the cooling mechanism 30 can be improved, and the temperature resistance of the switching devices 10 and the capacitors 20 can be further improved, and further the power of the motor controller can be increased.

Further, the inside of the cooling tube 33 may define a first flow channel 35, a second flow channel 36, and a third flow channel 37, in the up-down direction shown in fig. 24, the second flow channel 36 may be located between the first flow channel 35 and the third flow channel 37, that is, the first flow channel 35 may be located above the second flow channel 36, the third flow channel 37 may be located below the second flow channel 36, the first flow channel 35, the second flow channel 36, and the third flow channel 37 may be separated by a partition 38, and the first flow channel 35, the second flow channel 36, and the third flow channel 37 may be formed by machining, so that the refrigerant in the cooling tube 33 may be ensured to flow smoothly.

In some embodiments of the present invention, as shown in fig. 1, fig. 2, fig. 4, and fig. 25, each cooling tube 33 may be sleeved with a plurality of stoppers 40, the plurality of stoppers 40 on each cooling tube 33 may be spaced apart in a length direction of the cooling tube 33, it should be noted that the number of the cooling tubes 33 may be set to be plural, the stopper 40 may be set on each cooling tube 33, the number of the stoppers 40 set on each cooling tube 33 may be plural, and in a left-right direction shown in fig. 1, the plurality of stoppers 40 set on each cooling tube 33 may be spaced apart, that is, the plurality of stoppers 40 on each cooling tube 33 may be spaced apart in the length direction of the cooling tube 33.

The switching device 10 may be disposed between two adjacent stoppers 40 on the cooling pipe 33 defining the first mounting space 31, the stoppers 40 being adapted to restrict the switching device 10 in a length direction of the cooling pipe 33, it should be explained that the switching device 10 may be disposed in the first mounting space 31, the switching device 10 may be disposed between two adjacent cooling pipes 33 defining the first mounting space 31, specifically, the switching device 10 may be disposed between two adjacent stoppers 40 on the cooling pipe 33, and the stoppers 40 may restrict the switching device 10 in a left-right direction shown in fig. 1, that is, the stoppers 40 may restrict the switching device 10 in the length direction of the cooling pipe 33.

The capacitor 20 may be disposed between two adjacent limiting blocks 40 on the cooling pipe 33 defining the second installation space 32, and the limiting blocks 40 are adapted to limit the capacitor 20 in the length direction of the cooling pipe 33, it should be noted that the capacitor 20 may be disposed in the second installation space 32, the capacitor 20 may be disposed between two adjacent cooling pipes 33 defining the second installation space 32, specifically, the capacitor 20 may be disposed between two adjacent limiting blocks 40 on the cooling pipe 33, and in the left-right direction shown in fig. 1, the limiting blocks 40 may limit the capacitor 20, that is, the limiting blocks 40 may limit the capacitor 20 in the length direction of the cooling pipe 33.

Further, the stopper 40 may include: a first position-limiting portion 41, a second position-limiting portion 42 and a third position-limiting portion 43, it should be explained that the first position-limiting portion 41, the second position-limiting portion 42 and the third position-limiting portion 43 may jointly form the position-limiting block 40, the number of the third position-limiting portions 43 may be two, one end of each of the first position-limiting portion 41 and the second position-limiting portion 42 may be fixedly connected with one third position-limiting portion 43, the other end of each of the first position-limiting portion 41 and the second position-limiting portion 42 may be fixedly connected with the other third position-limiting portion 43, preferably, the first position-limiting portion 41, the second position-limiting portion 42 and the third position-limiting portion 43 may be an integrally formed part, the first position-limiting portion 41, the second position-limiting portion 42 and the third position-limiting portion 43 may define a position-limiting space 44, the cooling pipe 33 may be inserted into the position-limiting space 44, and thus the capacitor 20 disposed in the second mounting space 32 and the switch device 10 disposed in the first mounting space 31 may be limited by the position-limiting block 40, the structure layout of the filtering and power unit 100 can be made compact, so that the structure layout of the motor controller can be made compact, the power density of the motor controller can be improved, the size of the motor controller can be reduced, the structure size of the motor controller can be reduced, and the application range of the motor controller can be enlarged.

It should be noted that only the switching device 10 or the capacitor 20 may be disposed in the first installation space 31, the capacitor 20 may be disposed in the second installation space 32 when the switching device 10 is disposed in the first installation space 31, and the switching device 10 may be disposed in the second installation space 32 when the capacitor 20 is disposed in the first installation space 31.

In some embodiments of the present invention, as shown in fig. 1-5, 21-23, the cooling mechanism 30 may further include: the cooling device comprises a liquid inlet end 50 and a liquid outlet end 60, wherein the liquid inlet end 50 can be provided with a liquid inlet 51, the liquid outlet end 60 can be provided with a liquid outlet 61, a first end of each cooling pipe 33 opposite to the liquid inlet end 50 can be communicated with the liquid inlet 51, and a second end of each cooling pipe 33 opposite to the liquid outlet end 60 can be communicated with the liquid outlet 61. It should be explained that the liquid inlet end 50 is provided with a liquid inlet 51, the number of the cooling pipes 33 may be set to be plural, first ends of the cooling pipes 33 opposite to the liquid inlet end 50 may be all communicated with the liquid inlet 51, that is, left and right directions shown in fig. 1, left ends of the cooling pipes 33 may be all communicated with the liquid inlet 51, the liquid outlet end 60 is provided with a liquid outlet 61, second ends of the cooling pipes 33 opposite to the liquid outlet end 60 may be all communicated with the liquid outlet 61, that is, right and left directions shown in fig. 1, right ends of the cooling pipes 33 may be all communicated with the liquid inlet 51, the refrigerant may flow into the cooling pipes 33 through the liquid inlet 51, and then the refrigerant may flow out of the cooling pipes 33 from the liquid outlet 61, so that the refrigerant may reliably and smoothly flow into and out of the cooling pipes 33, thereby ensuring that the cooling pipes 33 may effectively perform effective operation on the plurality of switching devices 10 and the plurality of capacitors 20 And (4) fully cooling.

In some embodiments of the present invention, as shown in fig. 1-5, 21-23, the inlet end 50 may include: feed liquor body 52 and a plurality of first installation sleeve 53, feed liquor body 52 can inject feed liquor stock solution space 54, and the one end of a plurality of first installation sleeve 53 can communicate with feed liquor stock solution space 54, and a plurality of cooling tube 33 outsides can be located to the other end of a plurality of first installation sleeve 53 cover respectively, and a plurality of first installation sleeve 53 can the one-to-one setting with a plurality of cooling tube 33. It should be noted that the liquid inlet storage space 54 may be defined by the liquid inlet body 52, the number of the first mounting sleeves 53 may be multiple, in the left-right direction shown in fig. 1, the left ends of the first mounting sleeves 53 may be communicated with the liquid inlet storage space 54, the right ends of the first mounting sleeves 53 may be respectively sleeved on the outer sides of the cooling pipes 33, that is, one end of the first mounting sleeves 53 may be communicated with the liquid inlet storage space 54, the other ends of the first mounting sleeves 53 may be respectively sleeved on the outer sides of the cooling pipes 33, preferably, the number of the first mounting sleeves 53 may be the same as the number of the cooling pipes 33, and the first mounting sleeves 53 and the cooling pipes 33 may be arranged in one-to-one correspondence, so that one first mounting sleeve 53 and one cooling pipe 33 are sleeved together, and the leakage of the refrigerant flowing from the first mounting sleeve 53 to the cooling pipe 33 may be avoided, thereby ensuring the reliability of the filtering and the use of the power unit 100.

In some embodiments of the present invention, as shown in fig. 1-5 and 21-23, the liquid inlet end 50 may further include: the inlet pipe 55, the one end of inlet pipe 55 can communicate with feed liquor stock solution space 54, it should be explained that, in the left and right direction shown in fig. 1, the right end of inlet pipe 55 can communicate with feed liquor stock solution space 54, the refrigerant can flow into inlet pipe 55 from the left end of inlet pipe 55, the refrigerant that flows into inlet pipe 55 can flow into feed liquor stock solution space 54 from the right end of inlet pipe 55, then the refrigerant can flow into a plurality of cooling tubes 33 from feed liquor stock solution space 54 in order to cool off a plurality of switching devices 10 and a plurality of electric capacity 20, dispel the heat, so set up can be with the reliable leading-in a plurality of cooling tubes 33 of inlet pipe 55 of refrigerant, can guarantee the reliable operation of cooling body 30.

In some embodiments of the present invention, as shown in fig. 1-5, the liquid outlet end 60 may include: go out liquid body 62 and a plurality of second installation sleeve pipe 63, go out liquid body 62 and can inject out liquid stock solution space 64, the one end of a plurality of second installation sleeve pipes 63 can communicate with a liquid stock solution space 64, a plurality of cooling tubes 33 outsides can be located to the other end cover respectively of a plurality of second installation sleeve pipes 63, a plurality of second installation sleeve pipes 63 can set up with a plurality of cooling tubes 33 one-to-one. It should be noted that the liquid outlet and storage space 64 may be defined by the liquid outlet body 62, the number of the second mounting sleeves 63 may be multiple, in the left-right direction shown in fig. 1, the right ends of the second mounting sleeves 63 may be communicated with the liquid outlet and storage space 64, the left ends of the second mounting sleeves 63 may be respectively sleeved on the outer sides of the cooling pipes 33, preferably, the number of the second mounting sleeves 63 may be the same as the number of the cooling pipes 33, and the second mounting sleeves 63 and the cooling pipes 33 may be arranged in a one-to-one correspondence manner, so that one second mounting sleeve 63 and one cooling pipe 33 may be sleeved together, leakage of the refrigerant flowing into the second mounting sleeve 63 from the cooling pipe 33 may be avoided, and thus the use reliability of the filtering and power unit 100 may be ensured.

It should be noted that the first mounting sleeve 53 of the liquid inlet body 52 and the second mounting sleeve 63 of the liquid outlet body 62 can limit the switching device 10 and the capacitor 20.

In some embodiments of the present invention, as shown in fig. 1 to 5, the liquid outlet end 60 may further include: the outlet pipe 65 and one end of the outlet pipe 65 may be communicated with the liquid outlet and storage space 64, it should be explained that, in the left-right direction shown in fig. 1, the left end of the outlet pipe 65 may be communicated with the liquid outlet and storage space 64, the refrigerant may flow into the liquid outlet and storage space 64 from the plurality of cooling pipes 33, the refrigerant flowing into the liquid outlet and storage space 64 may flow into the outlet pipe 65 from the left end of the outlet pipe 65, and then the refrigerant may flow out from the right end of the outlet pipe 65, so that the refrigerant that cools the plurality of switching devices 10 and the plurality of capacitors 20 in the plurality of cooling pipes 33 may be led out from the outlet pipe 65, and the reliable operation of the cooling mechanism 30 may be further ensured.

In some embodiments of the present invention, as shown in fig. 1 to 3 and 18 to 20, each of the switching devices 10 may include a switching body 11, each of the capacitors 22 may include a capacitor body 21, an outer dimension of the switching body 11 may be the same as an outer dimension of the capacitor body 21, it should be noted that, the number of the switching devices 10 may be set to be plural, each of the switching devices 10 may include a switching body 11, the number of the capacitors 22 may be plural, each of the capacitors 22 may include a capacitor body 21, and an outer dimension of the switching body 11 and an outer dimension of the capacitor body 21 may be set to be the same, which may facilitate assembly of the filtering and power unit 100, may make a structural layout of the filtering and power unit 100 more compact, may improve a power density of the motor controller, and, the size and the weight of the motor controller can be reduced, the power consumption of the motor controller can be reduced, and the driving range of the vehicle can be increased.

In some embodiments of the present invention, as shown in fig. 1 to 13, the filtering and power unit 100 may further include: first conductive connection row 70, second conductive connection row 80, and third conductive connection row 90, the positive electrode disposed on switching device 10 may be first positive electrode 13, the negative electrode disposed on switching device 10 may be first negative electrode 12, the positive electrode disposed on capacitor 20 may be second positive electrode 23, and the negative electrode disposed on capacitor 20 may be second negative electrode 23.

The first conductive connection row 70 may be connected to the negative electrode 12 of each switching device 10 and the negative electrode 22 of each capacitor 20, and it should be noted that the first conductive connection row 70 may include a first body 71 and a negative electrode connection end 72, the number of the negative electrode connection ends 72 may be multiple, specifically, the number of the negative electrode connection ends 72 may be equal to the sum of the numbers of the switching devices 10 and the capacitors 20, a plurality of negative electrode connection ends 72 may be disposed on the first body 71, the negative electrode connection ends 72 on the first body 71 may be connected to the negative electrodes 12 of the switching devices 10 and the negative electrodes 22 of the capacitors 20 in a one-to-one correspondence, and the negative electrode connection end 72 on the first conductive connection row 70 is electrically connected to the negative electrodes 12 of the switching devices 10 and the negative electrodes 22 of the capacitors 20.

The second conductive connection row 80 is connected to the positive electrode 13 of each switching device and the positive electrode 23 of each capacitor 20, and it should be explained that the second conductive connection row 80 may include a second body 81, a first positive connection terminal 82, a third body 83, and a second positive connection terminal 84, one end of the second body 81 may be connected to one end of the third body 83, the second body 81 and the third body 83 may be configured as an integrally formed part, the second body 81 may be provided with a plurality of first positive connection terminals 82, specifically, the number of the first positive connection terminals 82 may be equal to the number of the capacitors 20, the plurality of first positive connection terminals 82 on the second body 81 may be disposed in one-to-one correspondence with the positive electrodes 23 of the plurality of capacitors 20, the first positive connection terminals 82 on the second body 81 may be electrically connected to the positive electrodes 23 of the capacitors 20, the third body 83 may be provided with a plurality of second positive connection terminals 84, specifically, the number of the second positive electrode connection terminals 84 may be equal to the number of the switching devices 10, the plurality of second positive electrode connection terminals 84 on the third body 83 may be disposed in one-to-one correspondence with the positive electrodes 13 of the plurality of switching devices 10, the second positive electrode connection terminals 84 on the third body 83 may be electrically connected with the positive electrodes 13 of the switching devices 10, and the plurality of third bodies 83 may be disposed at uniform intervals in the left-right direction shown in fig. 1.

The third conductive connection row 90 may connect the output electrodes 14 of two adjacent switching devices 10, and it should be noted that the third conductive connection row 90 may include a fourth body 91 and a connection portion 92, specifically, the number of the third conductive connection row 90 may be multiple, each third conductive connection row 90 may include 2 fourth bodies 91 and 1 connection portion 92, two ends of the connection portion 92 are respectively connected with 1 fourth body 91, the fourth bodies 91 may be disposed to extend in a direction away from the connection portion 92, that is, in a front-back direction shown in fig. 1, the fourth bodies 91 may extend in a back direction, further, in a left-right direction in fig. 1, one fourth body 91 is disposed between two adjacent third bodies 83, that is, 1 fourth body 91 is disposed between every 2 adjacent third bodies 83, it may also be understood that, 1 third body 83 is disposed between every 2 adjacent fourth bodies 91, each fourth body 91 may be provided with a plurality of first output stage connection terminals 93, the sum of the number of the first output stage connection terminals 93 arranged on the plurality of fourth bodies 91 may be equal to the number of the switching devices 10, the plurality of first output stage connection terminals 93 on the plurality of fourth bodies 91 may be arranged in one-to-one correspondence with the output electrodes 14 of the plurality of switching devices 10, and the first output stage connection terminals 93 on the fourth bodies 91 may be electrically connected with the output electrodes 14 of the switching devices 10.

Further, a power negative input end 73 can be arranged on the first conductive connection row 70, a power positive input end 85 can be arranged on the second conductive connection row 80, a current output end 94 can be arranged on the third conductive connection row 90, the power negative input end 73 can be electrically connected with a negative electrode of a power supply, the power positive input end 85 can be electrically connected with a positive electrode of the power supply, and current can be output from the current output end 94, so that the working reliability of the filtering and power unit 100 can be guaranteed, and the filtering and power unit 100 can be conveniently assembled.

In addition, it should be noted that the switch device 10, the capacitor 20, the cooling tube 33, the limiting block 40, the liquid inlet 50, the liquid outlet 60, the first conductive connecting row 70, the second conductive connecting row 80 and the third conductive connecting row 90 of the present invention may all be constructed as general parts, such that the versatility of the filter and power unit 100 may be improved, and the assembly efficiency of the filter and power unit 100 may be improved, and in addition, the power of the filter and power unit 100 may be adjusted by adjusting the number of the switch device 10, the capacitor 20 and the cooling tube 33, so as to solve the problem of single type selection of the motor controller power device in the prior art, and the mold cost and the manufacturing cost of each part in the filter and power unit 100 may be reduced, and the production cost of the vehicle may also be reduced.

Referring to an embodiment of the present invention, as shown in fig. 1, the filter and power unit 100 may include 18 switching devices 10, 18 capacitors 20, 7 cooling pipes 33, 35 stoppers 40, 1 liquid inlet end 50, 1 liquid outlet end 60, 1 first conductive connection row 70, 1 second conductive connection row 80, and 3 third conductive connection rows 90, in the front-rear and left-right directions shown in fig. 1, the 7 cooling pipes 33 may be uniformly spaced apart in the front-rear direction, each 5 stoppers 40 may be spaced apart in the length direction of 1 cooling pipe 33, wherein 4 cooling pipes 33 disposed near the rear may define three second installation spaces 32, 6 capacitors 20 may be disposed in each second installation space 32, each capacitor 20 may be disposed between two adjacent stoppers 40 on the cooling pipe 33 defining the second installation space 32, three installation spaces 34 located at the front side may be configured as the first installation space 31, there are 6 switching devices 10 in each first installation space 31, and each switching device 10 may be disposed between two adjacent stoppers 40 on the cooling pipe 33 defining the first installation space 31, a left end of the cooling pipe 33 may be provided with an inlet end 50, a right end of the cooling pipe 33 may be provided with an outlet end 60, a first conductive connection row 70 may be disposed above the capacitor 20 and the switching device 10 and electrically connected with the first negative electrode 12 of the switching device 10 and the second negative electrode 22 of the capacitor 20, a second conductive connection row 80 may be disposed below the capacitor 20 and the switching device 10 and electrically connected with the first positive electrode 13 of the switching device 10 and the second positive electrode 23 of the capacitor 20, and a third conductive connection row 90 may be disposed below the capacitor 20 and the switching device 10 and electrically connected with the output electrode 14 of the switching device 10. The present invention is not limited thereto, and the number and the installation position of all the components of the filtering and power unit 100 may be adjusted according to actual requirements.

A method for assembling the filter and the power unit of the present application is described below, but the method for assembling the filter and the power unit of the present application is not limited to the following steps.

S1, customizing a switching device (silicon carbide single tube) with required specification and size, overlapping the metal foil electrode and the plastic film from two ends, then winding, and then extruding and shaping to form the capacitor with the same size as the outer contour of the switching device.

And S2, smearing a fixing sealant on one end of each of the plurality of cooling pipes, sequentially assembling the cooling pipes on the first mounting sleeve at the liquid inlet end, and then putting the cooling pipes into a heating furnace to heat so that the fixing sealant is hardened.

And S3, fixing the product obtained in the step S2 by using a tool.

And S4, sequentially assembling the plurality of switching elements and the plurality of capacitors among the plurality of cooling pipes, and sequentially sleeving the limiting blocks on the outer sides of the cooling pipes to limit and clamp the switching elements and the capacitors.

S5, after the switch device, the capacitor and the limiting block are assembled, the other ends of the cooling pipes are coated with a fixing sealant, and then the cooling pipes are sequentially assembled on the second mounting sleeve at the liquid outlet end and tightly press the switch device and the capacitor.

And S6, putting the product obtained in the step S5 into a heating furnace to be heated so as to harden the fixing sealant.

And S7, performing a leakage test on the product obtained in the step S6 after water passes through, and performing air drying after the test is qualified.

And S8, uniformly coating solder paste on the first negative electrodes of all the switch devices and the second negative electrodes of all the capacitors of the air-dried product obtained in the step S7.

And S9, placing the first conductive connecting row on the first negative electrode and the second negative electrode which are coated with the soldering tin paste, and then completing the soldering through a flow soldering furnace.

And S10, uniformly coating solder paste on the first positive electrode connecting end, the second positive electrode connecting end and the first output stage connecting end of the third conductive connecting row of the second conductive connecting row, then respectively assembling the second conductive connecting row and the third conductive connecting row on the first positive electrode, the second positive electrode and the output stage of the product obtained in the step S9, and then completing welding through a flow soldering furnace to complete the assembling process of the product.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

In the description of the present invention, "the first feature" and "the second feature" may include one or more of the features.

In the description of the present invention, "a plurality" means two or more.

In the description of the invention, "on" or "under" a first feature may include that the first and second features are in direct contact, and may also include that the first and second features are not in direct contact but are in contact via another feature between them.

In the description of the invention, "over," "above," and "on" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A filtering and power unit for a motor controller, comprising:

a plurality of switching devices;

a plurality of capacitors;

the cooling mechanism limits a first installation space and a second installation space, the switch devices are arranged in the first installation space, the capacitors are arranged in the second installation space, and the cooling mechanism is suitable for cooling the switch devices and the capacitors.

2. The filter and power unit of a motor controller according to claim 1, wherein the cooling mechanism includes a plurality of cooling pipes, the plurality of cooling pipes are sequentially arranged and spaced apart in a width direction of the cooling pipes to form an installation space between adjacent two cooling pipes, and the installation space includes the first installation space and the second installation space.

3. The filtering and power unit of a motor controller according to claim 2, wherein a plurality of stoppers are sleeved on each cooling tube, and the stoppers on each cooling tube are spaced apart in the length direction of the cooling tube;

the switch device is arranged between two adjacent limiting blocks on the cooling pipe for limiting the first installation space, and the limiting blocks are suitable for limiting the switch device in the length direction of the cooling pipe;

the capacitor is arranged between two adjacent limiting blocks on the cooling pipe for limiting the second mounting space, and the limiting blocks are suitable for limiting the capacitor in the length direction of the cooling pipe.

4. The filter and power unit of a motor controller of claim 2, wherein said cooling mechanism further comprises: the liquid inlet end and the liquid outlet end, the liquid inlet end is equipped with the inlet, the liquid outlet end is equipped with the liquid outlet, every the cooling tube with the relative first end of liquid inlet end all with the inlet intercommunication, every the cooling tube with the relative second end of liquid outlet end all with the liquid outlet intercommunication.

5. The filter and power unit of a motor controller of claim 4, wherein the inlet end comprises: the liquid inlet body defines a liquid inlet and storage space, one end of each of the first installation sleeves is communicated with the liquid inlet and storage space, and the other end of each of the first installation sleeves is sleeved outside the corresponding cooling pipe;

the first installation sleeves and the cooling pipes are arranged in a one-to-one correspondence mode.

6. The filter and power unit of a motor controller of claim 5, wherein said inlet end further comprises: and one end of the inlet pipe is communicated with the liquid inlet and storage space.

7. The filter and power unit of a motor controller of claim 4, wherein the liquid outlet end comprises: the liquid outlet body defines a liquid outlet and storage space, one end of each of the second mounting sleeves is communicated with the liquid outlet and storage space, and the other end of each of the second mounting sleeves is sleeved outside the corresponding cooling pipe;

the second installation sleeves and the cooling pipes are arranged in a one-to-one correspondence mode.

8. The filtering and power unit of motor controller according to claim 7, wherein said outlet end further comprises: and one end of the outlet pipe is communicated with the liquid outlet and storage space.

9. The filter and power unit of a motor controller of claim 1, wherein each of the switching devices comprises a switch body, each of the capacitors comprises a capacitor body, and the outer dimensions of the switch bodies are the same as the outer dimensions of the capacitor bodies.

10. The filter and power unit of a motor controller of claim 1, further comprising:

a first conductive connection bank connected to a negative electrode of each of the switching devices and a negative electrode of each of the capacitors;

a second conductive connection bar connected to an anode of each of the switching devices and an anode of each of the capacitors;

and the third conductive connection row is connected with the output electrodes of two adjacent switching devices.