Layered independent battery thermal management unit

Abstract

The utility model discloses a layered independent battery thermal management unit which comprises a metal plate box body and a bracket assembly arranged on a bottom plate of the metal plate box body, the support assembly divides the inner space of the metal plate box body into an upper layer area and a lower layer area. A high-voltage control module and a power supply module are arranged in the upper-layer area, and a low-voltage control module and a heating module are arranged in the lower-layer area; a refrigeration module and a heat dissipation module are arranged on a side plate of the unit metal plate box body. The high-voltage control module and the low-voltage control module control the refrigeration module and the heating module to operate, and the power module provides power for all electric devices of the unit. The product is compact in structure and ingenious in arrangement, is divided into an upper layer and a lower layer in spatial arrangement, adopts modular design, and is convenient for maintenance and heat dissipation of electric devices. In a limited space of an electric vehicle battery thermal management system, the integrated design of multiple modules and multiple functions is realized, and the space utilization rate is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric vehicle battery thermal management, and particularly relates to a hierarchical independent battery thermal management unit. Background Technique

[0002] The statements here only provide the background technique related to the utility model, and do not necessarily constitute the prior art.

[0003] Battery thermal management is a new technology based on the influence of temperature on battery performance, combined with the electrochemical characteristics and heat generation mechanism of the battery, based on the optimal charge and discharge temperature range of a specific battery, through reasonable design, and on the basis of multiple disciplines and fields such as materials science, electrochemistry, heat transfer, and molecular dynamics. It is used to solve the problems of heat dissipation or thermal runaway caused by the battery working at too high or too low temperatures, so as to improve the overall performance of the battery. It has now been widely applied to pure electric vehicles, hybrid electric vehicles, and other power systems powered by power batteries. With the continuous expansion of the new energy vehicle market and the continuous progress of technology, battery thermal management technology will play an increasingly important role.

[0004] The inventor found that at present, the battery thermal management of electric buses is mostly integrated with the vehicle air conditioner. Limited by the height, space, and high-power module of the bus air conditioner, the guarantee of the battery thermal management effect is not good. Therefore, there is a lack of a compact and fully functional independent battery thermal management unit. Summary of the Utility Model

[0005] The purpose of the utility model is to overcome the deficiencies existing in the above-mentioned prior art and provide a hierarchical independent battery thermal management unit.

[0006] To achieve the above purpose, the utility model is realized by the following technical solutions:

[0007] The technical solution of the utility model provides a hierarchical independent battery thermal management unit, including: a sheet metal box body and a bracket assembly installed on the bottom plate of the sheet metal box body; the bracket assembly divides the internal space of the sheet metal box body into an upper area and a lower area; a high-voltage control module and a power module are arranged in the upper area, and a low-voltage control module and a heating module are arranged in the lower area; a refrigeration module and a heat dissipation module are arranged on the side plate of the unit sheet metal box body.

[0008] In at least one embodiment, the bracket assembly includes two portal brackets and a bracket plane; the bracket plane is fixedly installed on the legs of the two portal brackets, dividing the interior of the sheet metal box body into an upper area and a lower area.

[0009] In at least one embodiment, the upper layer region is provided with a high-voltage control module and a power supply module, specifically: the high-voltage control module and the power supply module are arranged on the bracket plane;

[0010] The lower layer region is provided with a low-voltage control module and a heating module, specifically: the low-voltage control module and the heating module are arranged in the region below the bracket plane; the region below the bracket plane is also provided with common components of the refrigeration module and the heating module.

[0011] In at least one embodiment, the heating module is mainly a liquid heater; the common components of the refrigeration module and the heating module are specifically: a gas-liquid separator, a water pump, and a compressor.

[0012] In at least one embodiment, the arrangement mode of each component in the region below the bracket plane is specifically: the low-voltage control module is installed on the outer side of the support leg on one side of the bracket assembly, the gas-liquid separator and the water pump are installed on the outer side of the support leg on the other side opposite thereto, the liquid heater is installed on the inner side of the support leg opposite to the position of the water pump; the compressor is installed beside the liquid heater.

[0013] In at least one embodiment, the refrigeration module is arranged inside the side plate of the sheet metal box body; the condenser core of the refrigeration module integrates the functions of a parallel flow heat exchanger and a dryer.

[0014] In at least one embodiment, the heat dissipation module includes: a condensation fan and a plate heat radiator.

[0015] In at least one embodiment, the heat dissipation module and the refrigeration module are installed on the same side plate of the sheet metal box body;

[0016] Specifically: the condensation fan is installed on the outer side of the side plate; the plate heat radiator is installed on the inner side of the side plate.

[0017] In at least one embodiment, the bottom plate of the sheet metal box body is made of cold-rolled steel plate; the side plates and the top plate of the sheet metal box body are made of rust-proof aluminum plates.

[0018] In at least one embodiment, the high-voltage control module and the low-voltage control module control the operation of the refrigeration module and the heating module; the power supply module provides power for each electrical component of the unit.

[0019] The beneficial effects of the technical solution of the present utility model are as follows:

[0020] 1) The utility model discloses a layered independent battery thermal management unit, which includes a sheet metal box body and a bracket assembly installed on the bottom plate of the sheet metal box body; the bracket assembly divides the internal space of the sheet metal box body into an upper area and a lower area; a high-voltage control module and a power module are arranged in the upper area, and a low-voltage control module and a heating module are arranged in the lower area; a refrigeration module and a heat dissipation module are arranged on the side plate of the unit sheet metal box body. The high-voltage control module and the low-voltage control module control the operation of the refrigeration module and the heating module, and the power module provides power for each electrical component of the unit; the product of the utility model has a compact structure and ingenious layout. It is divided into upper and lower layers in terms of space layout and modular design, which is convenient for maintenance and heat dissipation of electrical components. In the limited space of the electric vehicle battery thermal management system, an integrated design of multiple modules and multiple functions is realized, and the space utilization rate is improved.

[0021] 2) By arranging each electrical component inside the sheet metal box body in layers in the utility model - the high-voltage control module and the power module are installed on the bracket plane in the upper area, the low-voltage control module, the gas-liquid separator and the water pump are installed outside the support legs in the lower area, and the liquid heater and the compressor are installed inside the support legs in the lower area, the installation structure of the electrical components inside the sheet metal box body can be made more compact, and the space utilization rate inside the sheet metal box body can be effectively improved. In addition, the utility model can also ensure that even if the electrical components get water in the case of vehicle rain or the like, the water can flow out effectively, avoiding the damage caused by water to the electrical components laid on the bottom plate plane, and ensuring the operation safety and service life of each electrical component.

[0022] 3) The arrangement method of the electrical components in the utility model, in which each electrical component inside the sheet metal box body is arranged in upper and lower sub-areas and the heat dissipation module and the refrigeration module are integrally installed on one side plate of the sheet metal box body, can make the electrical components arranged on the ventilation surface of the whole unit, increase the heat dissipation area, be more convenient for heat dissipation of each electrical component inside the unit, reduce the influence of high temperature on each electrical component during the operation of the unit, and effectively extend the service life of each electrical component inside the unit. Description of the Drawings

[0023] The specification drawings forming a part of the present utility model are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation of the present utility model.

[0024] Figure 1 is a schematic structural diagram of the layered independent battery thermal management unit provided by the present utility model;

[0025] In the figure: 1. Condensing fan; 2. Refrigeration module; 3. Plate heat exchanger; 4. Gas-liquid separator; 5. Water pump; 6. Liquid heater; 7. Compressor; 8. Low-voltage control module; 9. Power module; 10. High-voltage control module; 11. Sheet metal box body.

[0026] The distances or sizes between each part are exaggerated for showing the positions of each part, and the schematic diagram is only for illustration purposes. Detailed implementation manners

[0027] It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the present utility model. Unless otherwise specified, all technical and scientific terms used in the present utility model have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present utility model belongs.

[0028] It should be noted that the terms used herein are only for describing the specific implementation manners and are not intended to limit the exemplary embodiments according to the present utility model. As used herein, unless the present utility model clearly indicates otherwise, the singular forms are also intended to include the plural forms. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof;

[0029] For the convenience of description, if the words "upper", "lower", "left", and "right" appear in the present utility model, they only represent the same directions as the upper, lower, left, and right of the accompanying drawings themselves, and do not limit the structure. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present utility model.

[0030] Term explanation part: The terms "installation", "connection", "connection", "fixation", etc. in the present utility model should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral body; it can be a mechanical connection, an electrical connection, a direct connection, or an indirect connection through an intermediate medium. It can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0031] Embodiment 1

[0032] As Figure 1 shown, this embodiment discloses a layered independent battery thermal management unit, which includes a sheet metal box body 11 and a bracket assembly installed on the bottom plate of the sheet metal box body. The bracket assembly divides the internal space of the sheet metal box body into an upper layer area and a lower layer area. The upper layer area is arranged with a high-voltage control module 10 and a power module 9, and the lower layer area is arranged with a low-voltage control module 8 and a heating module. The side plate of the sheet metal box body is arranged with a refrigeration module 2 and a heat dissipation module. The high-voltage control module 10 and the low-voltage control module 8 control the operation of the refrigeration module 2 and the heating module, and the power module provides power for each electrical component of the unit.

[0033] The bracket assembly is fixedly installed on the bottom plate of the sheet metal box body 11. It includes two portal brackets and a bracket plane. The bracket plane is fixedly installed on the legs of the two portal brackets. The interior of the sheet metal box is divided into an upper area and a lower area by the bracket plane. The high-voltage control module 10 and the power supply module 9 are installed on the bracket plane. The low-voltage control module 8 and the heating module are installed in the area below the bracket plane. Among them, the heating module is mainly a liquid heater 6. In addition, common components of the refrigeration module and the heating module such as the gas-liquid separator 4, the water pump 5, and the compressor 7 are also installed in the area below the bracket plane. The specific layout of the components in the area below the bracket plane is as follows: The low-voltage control module 8 is installed on the outer side of the support leg on one side of the bracket assembly, the gas-liquid separator 4 and the water pump 5 are installed on the outer side of the support leg on the other side opposite to it, the liquid heater 6 is installed on the inner side of the support leg opposite to the position of the water pump 5, and the compressor 7 is installed beside the liquid heater 6.

[0034] The refrigeration module 2 is installed on the inner side wall of one side plate of the sheet metal box body. Its condenser core integrates the functions of a parallel flow heat exchanger and a dryer, which can effectively improve the heat dissipation efficiency while saving space and improving the utilization rate of the internal space of the sheet metal box body.

[0035] Also installed on the same side plate as the refrigeration module 2 is the heat dissipation module, which mainly includes a condensation fan 1 and a plate heat exchanger 3. Among them, the condensation fan 1 is installed on the outer side of this side plate, and the plate heat exchanger 3 is installed on the inner side wall of this side plate. When the battery thermal management unit dissipates heat, taking the plane where the side plate with the refrigeration module 2 and the heat dissipation module is located as the air outlet surface, and the planes of the other three side plates as the air inlet surfaces, can better dissipate heat from the electrical components and improve the heat dissipation effect.

[0036] In this embodiment, the interior space of the sheet metal box is divided into an upper area and a lower area by the bracket assembly, and the electrical components inside the unit - the high-voltage control module 10, the power supply module 9, the low-voltage control module 8, the gas-liquid separator 4, the water pump 5, the liquid heater 6, and the compressor 7 are installed in different areas. Compared with the conventional layout method of laying flat on the bottom plate of the box body, the layout method of the electrical components in this embodiment, where the high-voltage control module 10 and the power supply module 9 are installed on the bracket plane in the upper area, the low-voltage control module 8, the gas-liquid separator 4, and the water pump 5 are installed on the outer side of the support legs in the lower area, and the liquid heater 6 and the compressor 7 are installed on the inner side of the support legs in the lower area, can make the installation structure of the electrical components inside the sheet metal box more compact and effectively improve the utilization rate of the space inside the sheet metal box.

[0037] Meanwhile, the arrangement method of arranging electrical components in upper and lower sub-regions inside the sheet metal box body and installing the electrical components of the heat dissipation module and the refrigeration module integrally on one side plate of the sheet metal box body can enable the electrical components to be arranged on the ventilation surface of the entire unit, increasing the heat dissipation area, making it more convenient for the heat dissipation of each electrical component in the unit, reducing the influence of high temperature on each electrical component during the operation of the unit, and effectively extending the service life of each electrical component in the unit.

[0038] In addition, arranging the electrical components in the unit in layers instead of laying them flat on the bottom plate of the box body can also ensure that even if water enters the electrical components due to situations such as the vehicle getting rained on, the water can flow out effectively, avoiding damage to the electrical components laid on the bottom plate plane caused by water, and ensuring the operation safety and service life of each electrical component.

[0039] In this embodiment, the bottom plate of the sheet metal box body 11 is made of cold-rolled steel plate, which can ensure the overall structural strength of the sheet metal box body. The side plates and top plates of the sheet metal box body 11 and other parts are made of rust-proof aluminum plates, which can effectively reduce the weight of the box body and increase the cruising range of the whole vehicle.

[0040] In addition, the pipelines of the conventional battery refrigeration module and the heating module are independent, and solenoid valves are installed on the pipelines of the refrigeration module and the heating module respectively to control the opening and closing of the refrigeration or heating pipelines as required. In this embodiment, the refrigeration module and the heating module share a set of pipeline systems, which can not only effectively reduce the material cost and installation cost, but also effectively reduce the maintenance cost.

[0041] This embodiment provides a layered independent battery thermal management unit. The installation structure inside the sheet metal box body is compact and the layout is ingenious. It is divided into upper and lower layers in terms of space layout and is modularly designed, which is convenient for maintenance and heat dissipation of electrical components. In the limited space of the electric vehicle battery thermal management system, the integrated design of multiple modules and multiple functions is realized, improving the space utilization rate.

[0042] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A hierarchical independent battery thermal management unit, characterized in that, Including: A sheet metal box body and a bracket assembly installed on the bottom plate of the sheet metal box body; the bracket assembly divides the internal space of the sheet metal box body into an upper area and a lower area; a high-voltage control module and a power module are arranged in the upper area, and a low-voltage control module and a heating module are arranged in the lower area; a refrigeration module and a heat dissipation module are arranged on the side plate of the unit sheet metal box body.

2. The hierarchical independent battery thermal management unit according to claim 1, wherein, The bracket assembly includes two portal brackets and a bracket plane; the bracket plane is fixedly installed on the legs of the two portal brackets, dividing the interior of the sheet metal box body into an upper area and a lower area.

3. The hierarchical independent battery thermal management unit according to claim 2, wherein The specific arrangement of the high-voltage control module and the power module in the upper area is: the high-voltage control module and the power module are arranged on the bracket plane; The specific arrangement of the low-voltage control module and the heating module in the lower area is: the low-voltage control module and the heating module are arranged in the area below the bracket plane; Common components of the refrigeration module and the heating module are also arranged in the area below the bracket plane.

4. The hierarchical independent battery thermal management unit according to claim 3, wherein, The heating module is mainly a liquid heater; The common components of the refrigeration module and the heating module are specifically: a gas-liquid separator, a water pump, and a compressor.

5. The hierarchical independent battery thermal management unit according to claim 4, characterized in that, The arrangement method of each component in the area below the bracket plane is specifically: the low-voltage control module is installed on the outside of the support leg on one side of the bracket assembly, the gas-liquid separator and the water pump are installed on the outside of the support leg on the other side opposite thereto, and the liquid heater is installed on the inside of the support leg opposite to the position of the water pump; the compressor is installed beside the liquid heater.

6. The hierarchical independent battery thermal management unit according to claim 1, wherein, The refrigeration module is arranged on the inner side of the side plate of the sheet metal box body; the condenser core of the refrigeration module integrates the functions of a parallel flow heat exchanger and a dryer.

7. The hierarchical independent battery thermal management unit according to claim 1, wherein The heat dissipation module includes: a condensation fan and a plate heat exchanger.

8. The hierarchical independent battery thermal management unit according to claim 7, characterized in that, The heat dissipation module and the refrigeration module are installed on the same side plate of the sheet metal box body; Specifically: the condensation fan is installed on the outside of the side plate; the plate heat exchanger is installed on the inside of the side plate.

9. The hierarchical independent battery thermal management unit according to claim 1, characterized in that, The bottom plate of the sheet metal box body is made of cold-rolled steel; the side plates and the top plate of the sheet metal box body are made of rust-proof aluminum plates.

10. A hierarchical independent battery thermal management unit as claimed in claim 1, wherein, The high-voltage control module and the low-voltage control module control the operation of the refrigeration module and the heating module; the power module provides power for each electrical component of the unit.

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