CN218959365U

CN218959365U - Cooling flow passage structure, structural plate, BMS (battery management system) shell and battery pack

Info

Publication number: CN218959365U
Application number: CN202223279249.XU
Authority: CN
Inventors: 崔金强; 许炳; 徐文玲
Original assignee: GAC Aion New Energy Automobile Co Ltd
Current assignee: GAC Aion New Energy Automobile Co Ltd
Priority date: 2022-12-05
Filing date: 2022-12-05
Publication date: 2023-05-02
Anticipated expiration: 2032-12-05

Abstract

The utility model relates to a BMS equipment technical field provides a cooling runner structure, structural slab, BMS casing and battery package, mainly including inlet channel and the outlet channel that sets up, inlet channel includes first water delivery direction, second water delivery direction, follows first water delivery direction inlet channel with be provided with first runner dish between the outlet channel and establish the district; and a second flow passage disc setting area is arranged between the water inlet pipeline and the water outlet pipeline along the second water conveying direction. In this scheme, based on same inlet channel and outlet conduit are provided with first runner dish and establish district, second runner dish and establish the district, thereby can realize same carry out the subregion cooling between inlet channel and the outlet conduit, can follow the overall arrangement of the inside electrical component of adaptation BMS equipment to a greater extent, realize the effective thermal management to BMS equipment, improve its safe handling ability and increase of service life.

Description

Cooling flow passage structure, structural plate, BMS (battery management system) shell and battery pack

Technical Field

The application relates to BMS equipment technical field, particularly, relates to a cooling runner structure, structural slab, BMS casing and battery package.

Background

At present, the mainstream new energy automobile at home and abroad all selects the BMS (Battery Management System ) structural scheme of natural cooling type, and BMS mainboard and each electrical component are for setting up in the space that the BMS casing formed, do not have extra cooling heat transfer measure.

For a BMS motherboard, the main hot areas are distributed on a large current loop, and the heat of other areas is mainly affected by the heat radiation of the large current loop, wherein the temperature is the highest sampling detection resistance, the electron line and MOS area, and the other areas. The existing BMS structure schemes all adopt a natural cooling mode, high temperature can be generated due to rapid external temperature rise of large current, the temperature can accelerate the process of adverse reaction of components along with the movement of particles, and the service life of the BMS structure schemes is shortened; after the temperature of the components reaches a certain degree, the insulativity of the materials is reduced, the gains of the transistors and the integrated circuits are changed, the capacitance and the resistance are changed, the phenomena of large leakage current, signal distortion, frequency drift and the like are correspondingly generated, and the continuous high temperature of soldering tin, plates and the like can accelerate the aging of the components and cannot ensure the durability of the components and the components. When the superposition working conditions such as high current balance, continuous high temperature overload and the like are met, the over-temperature alarm can be caused, so that the power safety of the whole vehicle is affected, and the competitiveness of the product is reduced.

Disclosure of Invention

In order to overcome the above-mentioned shortcoming among the prior art, the aim at of this application provides a cooling runner structure, structural slab, BMS casing and battery package, can realize carrying out thermal management to BMS equipment, improves the security performance of BMS equipment and prolongs its life.

The technical means adopted for solving the technical problems are as follows:

the application provides a cooling flow passage structure, which comprises a water inlet pipe and a water outlet pipe, wherein the water inlet pipe comprises a first water conveying direction and a second water conveying direction, and a first flow passage disc setting area is arranged between the water inlet pipe and the water outlet pipe along the first water conveying direction; and a second flow passage disc setting area is arranged between the water inlet pipeline and the water outlet pipeline along the second water conveying direction.

In the implementation process, the first flow channel disc setting area and the second flow channel disc setting area are arranged based on the same water inlet pipeline and the same water outlet pipeline, so that partition cooling can be realized between the same water inlet pipeline and the same water outlet pipeline, the cooling effect can be better, and the integration level of the flow channels is higher.

Further, a plurality of first branch pipelines are arranged in the first flow channel disc arrangement area, and the plurality of first branch pipelines are communicated in parallel between the water inlet pipeline and the water outlet pipeline.

In the implementation process, through the plurality of first branch pipelines, a plurality of branch heat exchange flow passages can be formed on the first flow passage disc arrangement area, and meanwhile, a larger heat exchange area can be formed, so that the heat management effect can be better.

Further, a plurality of second branch pipelines are arranged in the second flow passage disc arrangement area, and the second branch pipelines are communicated in parallel and arranged between the water inlet pipeline and the water outlet pipeline.

In the implementation process, the plurality of branch heat exchange channels can be formed on the second channel disc setting area through the plurality of second branch pipelines, and meanwhile, a larger heat exchange area can be formed, so that the heat management effect can be better.

Further, the first flow channel disc setting area and the second flow channel disc setting area are symmetrically arranged.

In the implementation process, the first flow channel disc setting area and the second flow channel disc setting area are arranged in a symmetrical mode, so that the layout arrangement and the machining forming of the first flow channel disc setting area and the second flow channel disc setting area on the structural member can be facilitated; meanwhile, the circulation of the cooling liquid can be conveniently controlled.

Further, the water inlet pipeline, the first flow channel disc setting area and the second flow channel disc setting area are arranged on the same side of the water outlet pipeline;

or the water outlet pipeline, the first flow channel disc setting area and the second flow channel disc setting area are arranged on the same side of the water inlet pipeline.

The present application provides a structural panel having a cooling flow channel structure as described above disposed therein.

In the implementation process, through setting up a cooling runner structure that this application provided in the structural slab, can realize cooling runner structure is in integrated setting in the structural slab, also can make simultaneously the structural slab can possess the subregion cooling function under the same cooling runner, has better market competition.

The application provides a BMS (battery management system) shell, which comprises an upper shell and a lower shell, wherein the upper shell and/or the lower shell is/are internally provided with a cooling flow channel structure as described above;

alternatively, the upper housing and/or the lower housing are made of a structural plate as described above.

Further, an installation cavity for installing the electric component is formed between the upper shell and the lower shell in a covering mode, and a heat conducting medium is filled between the electric component and the inner wall of the installation cavity in an installation state.

In the implementation process, the heat conducting medium can be used for further facilitating the electric component to transfer generated heat to the mounting cavity, so that cooling heat exchange is facilitated through the cooling flow passage structure, and the thermal management effect is further improved.

There is provided a battery pack in which a BMS housing as described above is provided.

In the above-mentioned realization process, through the BMS casing that uses this application to provide in the battery package for BMS equipment after the installation can possess thermal management ability, avoids when meetting overlap operating mode such as heavy current equilibrium, high temperature overload, appears high temperature warning and influences the condition of whole car dynamic security, is convenient for improve the safety in utilization and the market competition of battery package.

Further, the BMS housing shares the same cooling circuit with the battery module of the battery pack.

In the implementation process, the BMS shell and the battery module are arranged to share the same cooling circuit, so that the connection of internal pipelines of the battery pack can be further simplified, and the assembly can be simpler and more convenient.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a cooling flow channel structure of the present application.

Fig. 2 is a schematic view showing a structure of the BMS housing according to the present application in a downward direction.

Fig. 3 is a schematic view illustrating another view of the BMS housing according to the present application.

Fig. 4 is a side view of the BMS housing of the present application.

Marking:

1-a water inlet pipeline, 101-a first water conveying direction, 102-a second water conveying direction, 11-a first flow channel disc arrangement area, 111-a first branch pipeline, 12-a second flow channel disc arrangement area, 121-a second branch pipeline and 13-a water inlet connection port;

2-a water outlet pipeline and 21-a water outlet connector;

31-upper housing, 32-lower housing.

Detailed Description

In order that the above-recited objects, features and advantages of the present utility model will be more clearly understood, a more particular description of the utility model will be rendered by reference to the appended drawings and appended detailed description. In addition, embodiments of the present application and features of the embodiments may be combined with each other without conflict. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, and the described embodiments are merely some, rather than all, embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, are intended to fall within the scope of the present utility model.

It should be noted that: unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. Like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures. Meanwhile, in the description of the present application, the terms "first", "second", and the like are used only to distinguish the description, and are not to be construed as indicating or implying relative importance.

As shown in fig. 1 to 4, the present embodiment provides a cooling flow channel structure, which includes a water inlet pipe 1 and a water outlet pipe 2, wherein the water inlet pipe 1 includes a first water delivery direction 101 and a second water delivery direction 102; in a preferred embodiment, the water inlet pipe 1 is a straight pipe, and the cooling liquid can be output from both ends of the water inlet pipe 1, so that the first water delivery direction 101 and the second water delivery direction 102 are opposite to each other, as shown in fig. 1.

Further, along the first water delivery direction 101, a first flow channel disc setting area 11 is arranged between the water inlet pipeline 1 and the water outlet pipeline 2, a plurality of first branch pipelines 111 are arranged in the first flow channel disc setting area 11, the first branch pipelines 111 are arranged in parallel in a winding manner, and two ends of each first branch pipeline 111 are respectively communicated with the water inlet pipeline 1 and the water outlet pipeline 2.

Similarly, along the second water delivery direction 102, a second flow channel disc setting area 12 is arranged between the water inlet pipeline 1 and the water outlet pipeline 2, a plurality of second branch pipelines 121 are arranged in the second flow channel disc setting area 12, the second branch pipelines 121 are also arranged in parallel in a winding manner, and two ends of each second branch pipeline 121 are respectively communicated with the water inlet pipeline 1 and the water outlet pipeline 2.

In the above implementation process, through the plurality of first branch pipes 111 and second branch pipes 121, a plurality of branch heat exchange channels may be formed on the first flow channel disc setting area 11 and the second flow channel disc setting area 12, and simultaneously, a larger heat exchange area may be formed, so that a thermal management effect may be better.

As a preferred solution, in this embodiment, the first flow channel disc setting area 11 and the second flow channel disc setting area 12 are symmetrically arranged, and by arranging the first flow channel disc setting area 11 and the second flow channel disc setting area 12 in a symmetrical form, the layout arrangement and the machining and the forming of the first flow channel disc setting area 11 and the second flow channel disc setting area 12 on the structural member can be facilitated; meanwhile, the circulation distances of the cooling liquid in the first flow passage disc setting area 11 and the second flow passage disc setting area 12 are enabled to be consistent, and the circulation of the cooling liquid is convenient to control.

As an application example, in this embodiment, as shown in fig. 1, the water inlet pipe 1, the first flow channel disc setting area 11, and the second flow channel disc setting area 12 are disposed on the same side of the water outlet pipe 2, and the water inlet pipe 1 and the water outlet pipe 2 are disposed side by side, so that the positions of the water inlet connection port 13 of the water inlet pipe 1 and the water outlet connection port 21 of the water outlet pipe 2 may be set closer to each other, so that optimization of the cooling flow channel structure in the subsequent pipe communication operation may be facilitated.

In other application examples, the water outlet pipe 2, the first flow channel disc area 11, and the second flow channel disc area 12 may be disposed on the same side of the water inlet pipe 1, which will not be described herein.

In this embodiment, based on the fact that the same water inlet pipeline 1 and water outlet pipeline 2 are provided with the first flow channel disc setting area 11 and the second flow channel disc setting area 12, partition cooling can be performed between the same water inlet pipeline 1 and water outlet pipeline 2, for example, layout setting of sampling detection resistors and MOS areas in the BMS device can be better adapted, partition cooling can be performed on a high-temperature area in the BMS device, and a cooling effect can be better; meanwhile, the integration level of the flow channel is higher, and the flow channel is convenient to popularize and apply.

Furthermore, thanks to a cooling flow passage structure as described above, a structural plate is provided in the present embodiment, the interior of which is provided with a cooling flow passage structure as described above. Through set up a cooling runner structure that this application provided in the structural slab, can realize cooling runner structure is in integrated setting in the structural slab also can make simultaneously the structural slab can possess the subregion cooling function under the same cooling runner, has better market competition.

In addition, there is also provided a BMS housing including an upper housing 31 and a lower housing 32, and a mounting cavity for mounting a power supply member (not shown) is formed between the upper housing 31 and the lower housing 32.

As a preferred solution, in this embodiment, a cooling flow path structure as described above is provided in the upper case 31 and/or the lower case 32, so that the upper case 31 or the lower case 32 provided with the cooling flow path structure may have a zone cooling function so as to facilitate thermal management of the BMS device.

In a preferred embodiment, the upper housing 31 and/or the lower housing 32 may be made of a structural plate as described above, and the upper housing 31 or the lower housing 32 may still have a partition cooling function.

Further, in the installation state, a heat conducting medium, such as a heat conducting paste, is filled between the electric component and the inner wall of the installation cavity; through the setting the heat conduction medium can be further convenient for the electrical component will produce the heat transfer extremely the installation cavity to be convenient for cool off the heat transfer through the cooling runner structure of setting, further improve thermal management effect.

In some of the experiments, the temperature of the heat-generating electric parts of the BMS heavy-current loop during use can be controlled at 35 ℃ relatively accurately from the original highest 85 ℃, so that corresponding electric parts, such as a sampling detection resistor, an electronic wire, an MOS (metal oxide semiconductor) and the like, can work in a good temperature state for a long time, the service life can be prolonged by about 3% -10%, and the BMS equipment can be used more safely and reliably.

Further, there is provided a battery pack in which the BMS housing as described above is disposed. Through the BMS casing that this embodiment provided of being applied to in the battery package for BMS equipment after the installation can possess thermal management ability, avoids when meetting stack operating mode such as heavy current equilibrium, high temperature overload, appears high temperature warning and influences the condition of whole car dynamic security, is convenient for improve the safety in utilization and the market competition of battery package.

In this embodiment, the BMS housing and the battery module are arranged to share the same cooling circuit, so as to further simplify the connection of internal pipelines of the battery pack, and the assembly is simpler and more convenient.

In this embodiment, the specific structural form of the battery pack may be referred to in the prior art, and will not be described herein.

The foregoing is merely a specific embodiment of the present application and is not intended to limit the scope of the present application, and various modifications and variations can be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application. Variations and substitutions will be readily apparent to those skilled in the art within the scope of the present disclosure, and are intended to be included within the scope of the present disclosure. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

It is noted that relational terms such as first and second, and the like are 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. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

Claims

1. The cooling flow passage structure is characterized by comprising a water inlet pipeline and a water outlet pipeline, wherein the water inlet pipeline comprises a first water conveying direction and a second water conveying direction, and a first flow passage disc setting area is arranged between the water inlet pipeline and the water outlet pipeline along the first water conveying direction; and a second flow passage disc setting area is arranged between the water inlet pipeline and the water outlet pipeline along the second water conveying direction.

2. The cooling flow passage structure according to claim 1, wherein a plurality of first branch pipes are provided in the first flow passage tray setting area, and the plurality of first branch pipes are communicated in parallel between the water inlet pipe and the water outlet pipe.

3. The cooling flow passage structure according to claim 1 or 2, wherein a plurality of second branch pipes are provided in the second flow passage disc setting area, and a plurality of the second branch pipes are provided in parallel communication between the water inlet pipe and the water outlet pipe.

4. The cooling flow passage structure according to claim 3, wherein the first flow passage disk arrangement area and the second flow passage disk arrangement area are symmetrically arranged.

5. The cooling flow passage structure according to claim 1 or 4, wherein the water inlet pipe, the first flow passage disk setting area, and the second flow passage disk setting area are provided on the same side of the water outlet pipe;

6. A structural panel, characterized in that it is internally provided with a cooling flow channel structure according to any one of claims 1-5.

7. A BMS housing comprising an upper housing and a lower housing, wherein a cooling flow channel structure according to any one of claims 1-5 is provided in said upper housing and/or said lower housing;

alternatively, the upper housing and/or the lower housing are made of a structural plate according to claim 6.

8. The BMS housing according to claim 7, wherein a mounting cavity for mounting an electrical component is formed between the upper housing and the lower housing in a covering manner, and a heat transfer medium is filled between the electrical component and an inner wall of the mounting cavity in a mounted state.

9. A battery pack, wherein a BMS housing as set forth in claim 7 or 8 is provided therein.

10. The battery pack of claim 9, wherein the BMS housing shares the same cooling circuit with a battery module of the battery pack.