CN217509345U - Power module device and vehicle - Google Patents

Abstract

The utility model discloses a power module device and vehicle, the power module device includes: a plurality of power modules; the casing, be provided with a plurality of accommodation spaces and a plurality of in the casing power module set up in the accommodation space, be provided with the coolant liquid runner in the casing, the coolant liquid runner includes a plurality of first runners, a plurality of second runners and a plurality of third runner, the coolant liquid runner is in the tip of casing is equipped with entry end and exit end respectively, first runner with the second runner set up respectively in power module's positive and negative surface, the third runner is used for the intercommunication first runner with the second runner. Make the coolant liquid in the first runner and the coolant liquid in the second runner converge like this to make the coolant liquid temperature in the coolant liquid runner reach the equilibrium, then cool off next power module, can guarantee that all power module's positive and negative surface is effectively cooled off, reduce the risk that power module is burnt out.

Description

Power module device and vehicle

Technical Field

The utility model belongs to the technical field of the semiconductor technology and specifically relates to a power module device and vehicle are related to.

Background

Along with the popularization and application of new energy automobile motors, the motor inverter as an important component of 'three electricity in new energy' plays a vital role in the aspect of control of the motors, the efficiency and the output characteristic of the motors are directly influenced, if the inverter shell is reasonable in design, the occupied space can be reduced, the space utilization rate can be reduced, and meanwhile the performance of the motors can be improved.

The core component of the inverter, namely the IGBT, on the market at present accounts for 1/3 in cost, but the IGBT has the characteristic of poor over-temperature resistance, and the improvement of the service life of the IGBT becomes the core competitiveness of the improvement of the service life of the inverter.

In the related art, there is a cooling water channel structure of an inverter, in which an upper water cooling plate and a lower water cooling plate are respectively disposed on upper and lower surfaces of an IGBT module, so that double-sided water cooling can be performed on the IGBT module. However, the temperature of the upper surface of the cooling liquid is lower and the temperature of the lower surface of the cooling liquid is higher after the cooling liquid flows through the IGBT module, and because the IGBT module has the characteristics of rapid cooling and rapid heating, the temperatures of the upper surface and the lower surface are inconsistent, and the risk of burning the IGBT module still exists.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a power module device is connected with the heat transfer runner between upper and lower cooling runner, makes the higher lower coolant liquid of temperature of cooling over last power module and the lower coolant liquid of going up of temperature carry out the heat exchange to the coolant liquid temperature of cooling runner about can balancing, with the upper and lower surface of effective cooling next power module.

The utility model also provides a vehicle.

According to the utility model discloses power module device of the embodiment of first aspect, power module device includes: a plurality of power modules; a housing, be provided with a plurality of accommodation space and a plurality of in the casing power module set up in the accommodation space, be provided with the coolant liquid runner in the casing, the coolant liquid runner includes a plurality of first runners, a plurality of second runners and a plurality of third runner, the coolant liquid runner is in the tip of casing is equipped with entry end and exit end respectively, first runner with the second runner set up respectively in power module's positive and negative surface, the third runner is used for the intercommunication first runner with the second runner.

According to the utility model discloses a power module device, through the intercommunication each other at first runner and second runner and third runner, can make coolant liquid in the first runner and the coolant liquid in the second runner carry out the heat exchange, at this moment, the coolant liquid temperature of cooling first power module lower surface reduces, the coolant liquid temperature of cooling first power module upper surface risees, thereby the coolant liquid temperature of surface becomes balanced about can making the power module, it is great to avoid the coolant liquid temperature of power module's upper and lower surface, then can effectively cool off next power module, so on and so on, after every cooling has finished a power module, coolant liquid in the first runner and the coolant liquid in the second runner can all carry out a heat exchange through the third runner, thereby can guarantee the upper and lower surface effective cooling of every power module, can not influence next power module because the produced coolant liquid temperature of last power module differs greatly The cooling effect of (2) realizes quick cooling in the process of over-temperature, reduces the risk of burning the power module, and effectively prolongs the service life of the power module.

According to some embodiments of the utility model, the both ends of first runner are provided with first water inlet and first delivery port, the both ends of second runner are provided with second water inlet and second delivery port, one side of third runner with first delivery port with the second delivery port is connected just the opposite side of third runner with first water inlet with the second water inlet is connected.

According to some embodiments of the present invention, the third flow channel is disposed to be inclined with respect to the first flow channel, so that an upper end of a center line of the third flow channel in a horizontal direction thereof forms an obtuse angle with the first flow channel, and the third flow channel is disposed to be inclined with respect to the second flow channel, so that a lower end of the center line of the third flow channel in the horizontal direction thereof forms an obtuse angle with the second flow channel.

According to the utility model discloses a some embodiments, the third runner with the junction of first water inlet is provided with first stop part, the third runner with the junction of second water inlet is provided with the second stop part, first stop part with the second stop part all inclines to set up and with the third runner corresponds the setting.

According to some embodiments of the present invention, the first blocking portion and the first water outlet jointly define a first junction of the third flow channel, the second blocking portion and the second water outlet jointly define a second junction of the third flow channel, a ratio between a cross-sectional area of the first junction and a cross-sectional area of the second junction is S1, S1 satisfies the relational expression: s1 is more than or equal to 3/7.

According to some embodiments of the present invention, a first connecting channel is provided at one end of the housing, the first water inlet and the second water inlet are both communicated with the first connecting channel, and the inlet end is communicated with the first connecting channel; and/or the other end of the shell is provided with a second connecting channel, the first water outlet and the second water outlet are communicated with the second connecting channel, and the outlet end is communicated with the second connecting channel.

According to some embodiments of the invention, the cross-sectional area of the first flow channel is smaller than the cross-sectional area of the second flow channel.

According to some embodiments of the present invention, a ratio between the cross-sectional area of the first flow passage and the cross-sectional area of the second flow passage is S2, the S2 satisfies the relation: s2 is more than or equal to 0.5.

Third flow channel according to some embodiments of the present invention, the power module apparatus further comprises: and the sealing element is arranged at the connecting position between the adjacent two first flow passages and the third flow passage.

Third flow passage a vehicle according to an embodiment of the second aspect of the present invention, comprising: the power module device.

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 a schematic structural diagram of a power module device according to a first embodiment of the present invention;

fig. 2 is a schematic structural diagram of a power module device according to a second embodiment of the present invention.

Reference numerals:

100. a power module device;

10. a power module;

20. a housing;

21. a first flow passage; 211. a first blocking portion; 212. a first water inlet; 213. a first water outlet;

22. a second flow passage; 221. a second blocking portion; 222. a second water inlet; 223. a second water outlet;

23. a third flow path; 231. a first manifold port; 232. a second manifold port;

24. a first connecting passage; 25. an inlet end; 26. an accommodating space;

30. and a seal.

Detailed Description

Embodiments of the present invention are described in detail below, and the embodiments described with reference to the drawings are exemplary.

The following describes a power module device 100 according to an embodiment of the present invention with reference to fig. 1, and the present invention also proposes a vehicle having the above power module device 100.

As shown in fig. 1, the power module apparatus 100 includes: a plurality of power modules 10 and a housing 20.

Wherein, a plurality of accommodation spaces 26 are provided in the housing 20, and a plurality of power modules 10 are provided in the accommodation spaces 26, a coolant flow channel is provided in the housing 20, and the coolant flow channel includes: a plurality of first flow channels 21, a plurality of second flow channels 22 and a plurality of third flow channels 23, wherein the ends of the housing 20 are respectively provided with an inlet end 25 and an outlet end (not shown in the figure), the first flow channels 21 and the second flow channels 22 are respectively arranged on the front and back surfaces of the power module 10, and the third flow channels 23 are used for communicating the first flow channels 21 and the second flow channels 22.

With this arrangement, the coolant enters the coolant flow channel from the inlet end 25 of the housing 20 and flows to the first flow channel 21 and the second flow channel 22, the third flow channel 23 is communicated between the first flow channel 21 and the second flow channel 22, so that the coolant in the first flow channel 21 and the coolant in the second flow channel 22 can exchange heat, that is, the coolant in the first flow channel 21 and the coolant in the second flow channel 22 enter the third flow channel 23 together to join together, so that the temperature of the coolant in the coolant flow channel becomes uniform, then the coolant in the third flow channel 23 flows into the next first flow channel 21 and the next second flow channel 22, respectively, and cools the next power module 10, so that the temperature of the coolant flowing through the upper and lower surfaces of the next power module 10 is not greatly different from each other, and the problem of damage caused by rapid cooling and heating does not occur, and so on, after all the power modules 10 are cooled, the cooling liquid of the first flow channel 21 and the cooling liquid of the second flow channel 22 finally flow out from the outlet end of the casing 20, so that continuous cooling and temperature reduction of the plurality of power modules 10 are realized, and accidental damage caused by uneven temperatures of the front surface and the back surface of a certain power module 10 is avoided.

In the present invention, the power module 10 may be an IGBT module. So configured, a plurality of IGBT modules are respectively distributed in each of the accommodation spaces 26, so that each of the IGBT modules can be cooled efficiently. Of course, the power module 10 includes, but is not limited to, the IGBT module described above.

Specifically, referring to fig. 1, the first flow channels 21 are disposed on an upper surface (front surface) of the power module 10, the second flow channels 22 are disposed on a lower surface (back surface) of the power module 10, the third flow channels 23 are disposed between two adjacent first flow channels 21, and the first flow channels 21 and the second flow channels 22 are both communicated with the third flow channels 23, such that the housing 20 defines a plurality of accommodation spaces 26, such that each power module 10 is disposed in each accommodation space 26, wherein, in the present embodiment, the number of the power modules 10 is three, and the three power modules are respectively correspondingly disposed in the accommodation spaces 26. After the cooling liquid in the first flow channel 21 cools the upper surface of the first power module 10 and the cooling liquid in the second heat dissipation cools the lower surface of the first power module 10, the cooling liquid in the first flow channel 21 and the cooling liquid in the second flow channel 22 may enter the third flow channel 23 to sufficiently converge, so that the temperature of the cooling liquid cooling the upper and lower surfaces of the power module 10 can be equalized, then the next power module 10 can be cooled, and so on, after each power module 10 is cooled, the cooling liquid in the first flow channel 21 and the cooling liquid in the second flow channel 22 perform a heat exchange through the third flow channel 23 to equalize the temperature of the cooling liquid in the cooling liquid flow channel again, thereby ensuring effective cooling of the upper and lower surfaces of each power module 10, and avoiding influence on the cooling effect of the next power module 10 due to the temperature difference of the cooling liquid generated by the previous power module 10, the rapid cooling during the over-temperature is realized, the risk that the power module 10 is burnt is reduced, and the service life of the power module 10 is prolonged.

Therefore, through the mutual communication between the first flow channel 21 and the third flow channel 23 and the second flow channel 22, the heat exchange between the cooling liquid in the first flow channel 21 and the cooling liquid in the second flow channel 22 can be realized, so that the temperature of the cooling liquid on the upper surface and the lower surface of the power module 10 can be balanced, and then the next power module 10 can be cooled effectively, and so on, the continuous cooling of the plurality of power modules 10 can be realized, the damage caused by the uneven temperature of the certain power module 10 can be avoided, the service life of the power module 10 can be greatly prolonged, and the service life of the inverter can be effectively prolonged.

Further, both ends of the first flow channel 21 are provided with a first water inlet 212 and a first water outlet 213, both ends of the second flow channel 22 are provided with a second water inlet 222 and a second water outlet 223, one side of the third flow channel 23 is connected with the first water outlet 213 and the second water outlet 223, and the other side of the third flow channel 23 is connected with the first water inlet 212 and the second water inlet 222.

It is understood that the first water inlet 212 is one end of each first flow passage 21 for the cooling liquid to enter, and the first water outlet 213 is the other end of each first flow passage 21 for the cooling liquid to flow out, and likewise, the second water inlet 222 and the second water inlet 222 of each second flow passage 22.

With such arrangement, the third flow channel 23 is communicated with the first flow channel 21 and the second flow channel 22, wherein one side of the third flow channel 23 is connected with the first water outlet 213 of the first flow channel 21, and one side of the third flow channel 23 is further connected with the first water outlet 213 of the second flow channel 22, so that the cooling liquid in the first flow channel 21 and the cooling liquid in the second flow channel 22 of the last power module 10 after being cooled can flow into the third flow channel 23, thereby realizing heat exchange between the upper cooling liquid and the lower cooling liquid. In addition, the other side of the third flow channel 23 is connected to the first water inlet 212 of the first flow channel 21, and the other side of the third flow channel 23 is further connected to the second water inlet 222 of the first flow channel 21, so that the upper and lower cooling liquids can continue to flow to the next first flow channel 21 and the next second flow channel 22 after heat exchange is performed, and the next power module 10 is cooled on both sides. That is, when the coolant in the first flow channel 21 reaches the first water outlet 213 communicated with the third flow channel 23, a part of the coolant may continuously flow to the first water inlet 212 of the first flow channel 21, another part of the coolant may enter the second flow channel 22 through the third flow channel 23 to exchange heat with the coolant in the second flow channel 22, and similarly, when the coolant in the second flow channel 22 reaches the second water outlet 223 communicated with the third flow channel 23, a part of the coolant may continuously flow to the second water inlet 222 of the second flow channel 22, another part of the coolant may enter the first flow channel 21 through the third flow channel 23 to exchange heat with the coolant in the first flow channel 21, thereby achieving the purpose of exchanging heat between the coolant in the first flow channel 21 and the coolant in the second flow channel 22.

As shown in fig. 1, in the first embodiment of the present invention, the third flow channel 23 is vertically disposed in the vertical direction and is communicated between the first flow channel 21 and the second flow channel 22, so that the flowing direction of the cooling liquid in the first flow channel 21 and the flowing direction of the cooling liquid in the second flow channel 22 flowing into the third flow channel 23 are vertical, and further the cooling liquid in the first flow channel 21 and the cooling liquid in the second flow channel 22 impact each other to realize heat exchange, thereby balancing the temperature of the cooling liquid in the cooling liquid flow channel.

As shown in fig. 2, in the second embodiment of the present invention, the third flow channel 23 is disposed obliquely to the first flow channel 21 so that the upper end of the center line of the third flow channel 23 in the horizontal direction thereof forms an obtuse angle with the first flow channel 21, and the third flow channel 23 is disposed obliquely to the second flow channel 22 so that the lower end of the center line of the third flow channel 23 in the horizontal direction thereof forms an obtuse angle with the second flow channel 22. With this arrangement, the upper end of the third flow channel 23 is disposed obliquely to the first flow channel 21, and the lower end of the third flow channel 23 is disposed obliquely to the second flow channel 22, so that the third flow channel 23 is a V-shaped flow channel axially symmetric to the center line of the third flow channel in the horizontal direction, and thus the coolant in the first flow channel 21 can flow into the third flow channel 23 along the same potential, and the coolant in the second flow channel 22 can flow into the third flow channel 23 along the same potential, that is, the V-shaped flow channel enables the coolant to flow into the third flow channel 23 more easily, and the coolant in the first flow channel 21 and the coolant in the second flow channel 22 can converge slowly along the oblique angle, so that the coolants can sufficiently converge and fuse, and thus the heat exchange efficiency of the housing 20 can be effectively improved, and the coolant in the first flow channel 21 cannot be flushed into the second flow channel 22 due to excessive impact.

A first blocking portion 211 is arranged at the connection position of the third flow channel 23 and the first water inlet 212, a second blocking portion 221 is arranged at the connection position of the third flow channel and the second water inlet 222, and the first blocking portion 211 and the second blocking portion 221 are both obliquely arranged and are arranged corresponding to the third flow channel 23. With such an arrangement, referring to fig. 2, the inclination directions of the first blocking portion 211 and the second blocking portion 221 correspond to the inclination direction of the third flow channel 23, after the coolant in the first flow channel 21 flows into the first water outlet 213, the flow rate of the coolant flowing to the next first flow channel 21 is greatly reduced due to the blocking of the first blocking portion 211, and the upper ends of the first flow channel 21 and the third flow channel 23 form an obtuse angle, so that a large amount of coolant can flow into the third flow channel 23 along the same potential, and the coolant in the second flow channel 22 can also flow into the third flow channel 23, so that a large amount of coolant in the first flow channel 21 and the second flow channel 22 can flow into the third flow channel 23, and heat exchange can be performed on the coolant, so as to equalize the coolant temperature difference between the first flow channel 21 and the second flow channel 22.

And the first blocking part 211 and the first water outlet 213 jointly define a first junction 231 of the third flow channel 23, the second blocking part 221 and the second water outlet 223 jointly define a second junction 232 of the third flow channel 23, the ratio between the cross-sectional area of the first junction 231 and the cross-sectional area of the second junction 232 is S1, and S1 satisfies the relation: s1 is more than or equal to 3/7. With such arrangement, when the cooling liquid in the first flow channel 21 and the second flow channel 22 flows through the third flow channel 23, because the cross-sectional area of the cooling liquid entering the third flow channel 23 is reduced, the cooling liquid cannot be completely discharged from the first water outlet, the cooling liquid enters the heat exchange area along the third flow channel 23 to realize heat exchange, and the cooling liquid in the second flow channel 22 also realizes heat exchange, after the cooling liquid in the first flow channel 21 and the second flow channel 22 is sufficiently heat exchanged, the water pressure of the cooling liquid is increased at this time, and the cooling liquid after heat exchange is pressed out from the first water outlet 213 of the next first flow channel 21 and the second water outlet 223 of the next second flow channel 22, so as to cool the next power module 10. Moreover, since the temperature of the cooling liquid on the lower surface of the power module 10 is higher than that of the cooling liquid on the upper surface, the ratio between the cross section of the first junction 231 and the cross section of the second junction 232 is greater than or equal to 3/7, so that the cooling liquid in the second flow passage 22 can be well cooled, and the temperature of the cooling liquid on the upper surface and the lower surface can be balanced.

Also, one end of the housing 20 is provided with a first connection passage 24, the first and second water inlets 212 and 222 are both communicated with the first connection passage 24, and the inlet end 25 is communicated with the first connection passage 24; and/or a second connecting channel is arranged at the other end of the third flow channel 23, the first water outlet 213 and the second water outlet 223 are both communicated with the second connecting channel, and the outlet end is communicated with the second connecting channel.

So configured, a first connection channel 24 is provided at one side of the housing 20, the first water inlet 212 of the first flow channel 21 and the second water inlet 222 of the second flow channel 22 are both communicated with the first connection channel 24, and the cooling liquid enters from the inlet end 25 and flows to the first flow channel 21 and the second flow channel 22 through the first connection channel 24, respectively. And, a second connection channel is provided at the other side of the housing 20, and the first water inlet 212 of the second flow passage 22 and the second water inlet 222 of the second flow passage 22 are both communicated with the second connection channel, through which the cooling liquid finally flows from the outlet end after all the power modules 10 are cooled. It is understood that the first connection channel 24 of the housing 20 is used to flow the total coolant to the first flow passage 21 and the second flow passage 22, respectively, and to cool each power module 10 in turn, and the second connection channel is used to flow out the coolant that has cooled all the power modules 10. Wherein the first flow channel 21 communicating with the first connecting channel 24 is used to cool the first power module 10, the second flow channel 22 communicating with the first connecting channel 24 is used to cool the first power module 10, the first flow channel 21 communicating with the second connecting channel is used to cool the last power module 10, and the second flow channel 22 communicating with the second connecting channel is used to cool the last power module 10. In addition, a water nozzle is provided at the inlet end 25 of the housing 20, which is connected to a pipe for storing the cooling liquid.

Wherein the cross-sectional area of the first flow passage 21 is smaller than the cross-sectional area of the second flow passage 22. So set up, because power module 10 lower surface temperature in service is higher than the temperature of upper surface, be less than the cross-sectional area of second runner 22 with the cross-sectional area of first runner 21, make second runner 22 be main cooling channel, first runner 21 is supplementary cooling channel, the coolant liquid flows to first runner 21 and second runner 22 respectively like this, can effectively realize the two-sided water-cooling to power module 10, simultaneously because the reduction of cooling area, the coolant liquid velocity of flow can obviously increase, can effectively promote heat exchange efficiency.

And, the ratio between the cross-sectional area of the first flow passage 21 and the cross-sectional area of the second flow passage 22 is S2, and S2 satisfies the relation: s2 is more than or equal to 0.5. So set up, when the coolant liquid flowed to second runner 22 and first runner 21 respectively, set up the cross-sectional area of second runner 22 more than the twice of the cross-sectional area of first runner 21 for the flow of the coolant liquid in the second runner 22 is big, and the velocity of flow is fast, can carry out high-efficient and rapid cooling to power module 10 lower surface, and the flow of the coolant liquid in the first runner 21 is little, and the velocity of flow is little, can effectively cool down power module 10 upper surface.

Specifically, the plurality of second flow passages 22 and the plurality of third flow passages 23 may be integrally formed. By such arrangement, the plurality of second flow passages 22 and the plurality of third flow passages 23 are integrally formed, so that the manufacturing is greatly facilitated, the assembling time can be saved, and meanwhile, the third flow passages 23 are detachably connected with the first flow passages 21, so that the power module 10 is convenient to mount and maintain.

In an embodiment of the present invention, the plurality of second flow passages 22 and the plurality of first flow passages 21 may be plate-shaped structures or tube-shaped structures, and the first flow passages 21 and the second flow passages 22 are respectively attached to the upper and lower surfaces of the power module 10. And, the plurality of third flow channels 23 may be a plate-shaped structure or a tubular structure, and the plurality of third flow channels 23 communicate between the first flow channels 21 and the second flow channels 22, thereby achieving heat exchange of the coolant between the first flow channels 21 and the second flow channels 22.

And, the fins are provided in the first flow channel 21 and the second flow channel 22, so that the cooling area of the cooling liquid can be greatly increased, thereby effectively improving the heat dissipation efficiency of the housing case 20.

Further, the power module apparatus 100 further includes: and a seal 30, wherein the seal 30 is arranged between two adjacent first flow passages 21 and third flow passages 23. With this arrangement, the third flow channel 23 is provided between two adjacent first flow channels 21, and the seal 30 is provided at the junction of the third flow channel 23 and the first flow channel 21, and leakage of the coolant can be prevented. The sealing element 30 may be a sealing gasket or a sealing ring, and the sealing element 30 may be installed first when the third flow channel 23 and the first flow channel 21 are installed and connected, and after the installation is completed, a waterproof adhesive may be further disposed at the connection portion to further prevent the coolant from leaking, thereby better ensuring the sealing performance of the housing case 20.

And, the first flow passage 21 may be a copper material, and the first flow passage 21 may be fixedly connected with the third flow passage 23 by a fastener. So set up, first runner 21 can be made by the copper product to utilize the fastener to carry out fixed connection with first runner 21 and third runner 23, and the heat can effectively be transmitted to the copper product, thereby guarantee that casing 20 can in time cool off power module 10, effectively promote casing 20's cooling efficiency, greatly reduce the risk that power module 10 burns out.

According to the utility model discloses vehicle of the embodiment of second aspect includes: the power module apparatus 100 described above.

Therefore, the first flow channel 21, the second flow channel 22 and the third flow channel 23 are communicated with each other, so that the cooling liquid in the first flow channel 21 and the cooling liquid in the second flow channel 22 can exchange heat, at this time, the temperature of the cooling liquid cooling the lower surface of the first power module 10 is lowered, the temperature of the cooling liquid cooling the upper surface of the first power module 10 is raised, so that the temperature of the cooling liquid cooling the upper surface and the lower surface of the power module 10 can be equalized, then the next power module 10 can be cooled, and so on, after each power module 10 is cooled, the cooling liquid in the first flow channel 21 and the cooling liquid in the second flow channel 22 can exchange heat once through the third flow channel 23, so that the upper surface and the lower surface of each power module 10 can be effectively cooled, and the cooling effect of the next power module 10 cannot be influenced by the temperature difference of the cooling liquid generated by the previous power module 10, the rapid cooling during the overtemperature is realized, the risk that the power module 10 is burnt is reduced, and the service life of the power module 10 is effectively prolonged.

In the description of the present invention, it is to be understood that the terms "center", "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, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

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 present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.

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 (10)

1. A power module apparatus, comprising:

a plurality of power modules;

the casing, be provided with a plurality of accommodation spaces and a plurality of in the casing power module set up in the accommodation space, be provided with the coolant liquid runner in the casing, the coolant liquid runner includes a plurality of first runners, a plurality of second runners and a plurality of third runner, the coolant liquid runner is in the tip of casing is equipped with entry end and exit end respectively, first runner with the second runner set up respectively in power module's positive and negative surface, the third runner is used for the intercommunication first runner with the second runner.

2. The power module device according to claim 1, wherein both ends of the first flow passage are provided with a first water inlet and a first water outlet, both ends of the second flow passage are provided with a second water inlet and a second water outlet, one side of the third flow passage is connected with the first water outlet and the second water outlet and the other side of the third flow passage is connected with the first water inlet and the second water inlet.

3. The power module apparatus according to claim 2, wherein the third flow channel is disposed obliquely with respect to the first flow channel such that an upper end of a center line of the third flow channel in a horizontal direction thereof forms an obtuse angle with the first flow channel, and the third flow channel is disposed obliquely with respect to the second flow channel such that a lower end of a center line of the third flow channel in a horizontal direction thereof forms an obtuse angle with the second flow channel.

4. The power module device according to claim 3, wherein a first blocking portion is disposed at a junction of the third flow passage and the first water inlet, a second blocking portion is disposed at a junction of the third flow passage and the second water inlet, and the first blocking portion and the second blocking portion are obliquely disposed and correspond to the third flow passage.

5. The power module device as claimed in claim 4, wherein the first blocking portion and the first water outlet collectively define a first junction of the third flow passage, the second blocking portion and the second water outlet collectively define a second junction of the third flow passage, a ratio between a cross-sectional area of the first junction and a cross-sectional area of the second junction is S1, and S1 satisfies a relation: s1 is more than or equal to 3/7.

6. The power module apparatus of claim 2, wherein one end of the housing is provided with a first connecting channel, the first and second water inlets are both in communication with the first connecting channel, and the inlet end is in communication with the first connecting channel; and/or the presence of a gas in the gas,

the other end of the shell is provided with a second connecting channel, the first water outlet and the second water outlet are communicated with the second connecting channel, and the outlet end is communicated with the second connecting channel.

7. The power module apparatus of claim 1, wherein the cross-sectional area of the first flow passage is less than the cross-sectional area of the second flow passage.

8. The power module device according to claim 7, wherein a ratio between the cross-sectional area of the first flow passage channel and the cross-sectional area of the second flow passage channel is S2, and the S2 satisfies a relation: s2 is more than or equal to 0.5.

9. The power module apparatus of claim 1, further comprising: a sealing member disposed at a connection position between adjacent two of the first flow passages and the third flow passage.

10. A vehicle, characterized by comprising: the power module apparatus of any one of claims 1-9.

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