CN108039536A - Electric commercial vehicle liquid cooling apparatus and liquid cooling system - Google Patents

Abstract

Embodiments of the present invention relate to the field of new energy batteries, in particular, to a liquid cooling device and a liquid cooling system for electric commercial vehicles. The electric commercial vehicle liquid cooling device includes a first liquid cooling plate, a second liquid cooling plate and a pipeline device, the inside of the first liquid cooling plate and the second liquid cooling plate are cavities, and the first liquid cooling plate is provided with a first inlet The liquid port and the first liquid outlet, the first liquid inlet and the first liquid outlet communicate with the inside of the first liquid cold plate, the second liquid cold plate is provided with a second liquid inlet and a second liquid outlet, and the second liquid cold plate is provided with a second liquid inlet and a second liquid outlet. The second liquid inlet and the second liquid outlet communicate with the inside of the second liquid cold plate, and the pipeline device is arranged between the first liquid cold plate and the second liquid cold plate, and is connected with the first liquid inlet and the first outlet. The liquid port, the second liquid inlet and the second liquid outlet are in communication. The electric commercial vehicle liquid cooling device can improve thermal management efficiency.

Description

Electric commercial vehicle liquid cooling device and liquid cooling system

technical field

Embodiments of the present invention relate to the field of new energy batteries, in particular, to a liquid cooling device and a liquid cooling system for electric commercial vehicles.

Background technique

The electric vehicle power battery system may experience abnormal temperature during operation. Thermal management of the electric vehicle power battery system is an important guarantee to ensure the normal and safe operation of electric vehicles.

Most of the existing thermal management methods are natural cooling or air cooling, and the thermal management efficiency is low.

Contents of the invention

In view of this, the present invention provides a liquid cooling device and a liquid cooling system for an electric commercial vehicle, so as to improve the existing problem of inefficient thermal management.

To achieve the above object, an embodiment of the present invention provides a liquid cooling device for an electric commercial vehicle, which is applied to a battery assembly of a commercial vehicle, including: a first liquid cooling plate, a second liquid cooling plate, and a piping device. The interior of the first liquid cold plate and the second liquid cold plate is a cavity, the first liquid cold plate is provided with a first liquid inlet and a first liquid outlet, and the first liquid inlet and the The first liquid outlet communicates with the inside of the first liquid cold plate, the second liquid cold plate is provided with a second liquid inlet and a second liquid outlet, and the second liquid inlet and the first liquid The two liquid outlets communicate with the inside of the second liquid cooling plate, and the pipeline device is arranged between the first liquid cooling plate and the second liquid cooling plate, and is connected with the first liquid inlet, the The first liquid outlet, the second liquid inlet and the second liquid outlet are in communication.

Optionally, the pipeline device includes a main water inlet pipe, a main water outlet pipe, a valve, a first liquid inlet connector, a first liquid outlet connector, a liquid inlet connecting pipe, a liquid outlet connecting pipe, a second A liquid inlet connection piece, a second liquid outlet connection piece. The first end of the main water inlet pipe is arranged at the valve. The first liquid inlet connector is respectively arranged on the second end of the main water inlet pipe, the first end of the liquid inlet communication pipe and the first liquid inlet, and the first liquid inlet is connected to Components, the second end of the main water inlet pipe, the first end of the liquid inlet connecting pipe and the first liquid inlet communicate with each other, and the second liquid inlet connectors are respectively arranged on the liquid inlet The second end of the inlet communication pipe and the second liquid inlet, the second liquid inlet connecting piece, the second end of the liquid inlet communication pipe and the second liquid inlet are in communication with each other. The first end of the main water outlet pipe is arranged on the valve and is located at a position where the valve is away from the first end of the main water inlet pipe, and the first liquid outlet connectors are respectively arranged on the main water outlet pipe The second end of the liquid outlet connecting pipe, the first end of the liquid outlet and the first liquid outlet; the first liquid outlet connector, the second end of the total outlet pipe, the liquid outlet The first end of the communication pipe communicates with the first liquid outlet, and the second liquid outlet connector is respectively arranged at the second end of the liquid outlet communication pipe and the second liquid outlet; The connecting member of the second liquid outlet, the second end of the connecting pipe of the liquid outlet and the second liquid outlet communicate with each other.

Optionally, the first liquid inlet connector includes a first port, a second port and a third port. The second end of the main water inlet pipe is set at the first port of the first liquid inlet connecting piece, and the first end of the liquid inlet connecting pipe is set at the second end of the first liquid inlet connecting piece. port, the first liquid inlet is provided at the third port of the first liquid inlet connecting member, and the first port, the second port and the third port communicate with each other.

Optionally, the first liquid outlet connector includes a fourth port, a fifth port and a sixth port, and the second end of the main water outlet pipe is arranged at the fourth port of the first liquid outlet connector , the first end of the liquid outlet connecting pipe is set at the fifth port of the first liquid outlet connecting piece, and the first liquid outlet is set at the sixth port of the first liquid outlet connecting piece , the fourth port, the fifth port and the sixth port communicate with each other.

Optionally, the first liquid inlet is arranged at the first end of the first liquid cooling plate, and the first liquid outlet is arranged at the first end of the first liquid cooling plate and is located at the first end of the first liquid cooling plate. A liquid cold plate is far away from the position of the first liquid inlet, the second liquid inlet is arranged at the first end of the second liquid cold plate, and the second liquid outlet is arranged at the second liquid inlet The first end of the cold plate is located at a position where the second liquid cold plate is away from the second liquid inlet.

Optionally, the electric commercial vehicle liquid cooling device further includes a plurality of supporting steel sleeves, the edges of the first liquid cooling plate and the second liquid cooling plate are respectively provided with a plurality of supporting parts, and the supporting steel sleeves The number of them is the same as the number of the support parts, and each of the support steel sleeves is arranged on each of the support parts.

An embodiment of the present invention also provides a liquid cooling system for an electric commercial vehicle. The liquid cooling system for an electric commercial vehicle includes: a battery pack and the aforementioned liquid cooling device for an electric commercial vehicle; the liquid cooling device for an electric commercial vehicle is disposed on the battery pack.

Optionally, the battery pack includes a case, a first battery assembly, a support and a second battery assembly. The first liquid cold plate is located inside the box and is arranged at the bottom of the box, the first battery assembly is arranged on the first liquid cold plate and is located away from the first liquid cold plate from the box position at the bottom of the body. The support member is disposed on the first battery assembly and is located at a position where the first battery assembly is away from the first liquid cooling plate. The second battery assembly is disposed on the support member at a position where the support member is away from the first battery assembly. The second liquid cooling plate is disposed between the second battery assembly and the supporting member. The pipeline device is nested on the first side wall of the box and is located between the first liquid cold plate and the second liquid cold plate; the pipeline device, the first liquid cold plate communicate with the second liquid cold plate.

Optionally, the battery pack further includes a battery management device. The battery management device is arranged inside the box and is located at a position close to the first side wall inside the box, and the battery management device is electrically connected to the first battery assembly and the second battery assembly. sexual connection.

Optionally, the battery pack further includes a battery disconnecting device, the battery disconnecting device is arranged inside the box and is located inside the box close to the second side wall, the first side wall and the Opposite to the second side wall, the battery disconnecting device is electrically connected to the first battery assembly and the second battery assembly.

The electric commercial vehicle liquid cooling device and the liquid cooling system provided by the embodiments of the present invention adopt the first liquid cooling plate and the second liquid cooling plate to form a double-layer liquid cooling plate and are equipped with corresponding pipeline devices, and the whole liquid cooling plate increases The contact area with the battery module is increased, which facilitates sufficient heat exchange between the liquid cooling plate and the battery module, and improves the thermal management efficiency.

Furthermore, the design of the double-layer and one-piece liquid-cooled plate facilitates the assembly of various parts inside the electric commercial vehicle battery pack, saving space.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and thus It should be regarded as a limitation on the scope, and those skilled in the art can also obtain other related drawings based on these drawings without creative work.

Fig. 1 is a schematic structural diagram of a liquid cooling device for an electric commercial vehicle provided by an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of a pipeline device provided by an embodiment of the present invention.

Fig. 3 is a schematic diagram of a first viewing angle of a first liquid cooling plate provided by an embodiment of the present invention.

Fig. 4 is a schematic structural diagram of a liquid cooling system for an electric commercial vehicle provided by an embodiment of the present invention.

Icons: 100-liquid cooling device for electric commercial vehicles; 200-liquid cooling system for electric commercial vehicles; 1-first liquid cooling plate; 11-first liquid inlet; 12-first liquid outlet; 2-second liquid cooling Plate; 21-the second liquid inlet; 22-the second liquid outlet; 3-pipeline device; 31-the main water inlet; 32-the main water outlet; 33-the first liquid inlet connector; 34-the first Liquid outlet connector; 35-liquid inlet connecting pipe; 36-liquid outlet connecting pipe; 37-second liquid inlet connector; 38-second liquid outlet connector; 4-support part; 41-support Steel sleeve; 5-box body; 6-second battery assembly; 71-battery management device; 72-battery cut-off device; 73-explosion-proof device.

Detailed ways

The electric vehicle power battery system may experience abnormal temperature during operation. Thermal management of the electric vehicle power battery system is an important guarantee to ensure the normal and safe operation of electric vehicles.

After investigation, it was found that most of the existing thermal management methods are natural cooling or air cooling, and the thermal management efficiency is low.

Based on the above research, an embodiment of the present invention provides a liquid cooling device and a liquid cooling system for an electric commercial vehicle, so as to improve the existing problem of inefficient thermal management.

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is only a part of embodiments of the present invention, but not all embodiments. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

It should be noted that like numerals and letters denote similar items in the following figures, therefore, once an item is defined in one figure, it does not require further definition and explanation in subsequent figures.

In the description of the present invention, unless otherwise clearly stipulated and limited, the terms "arrangement", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integrated Connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.

FIG. 1 shows a schematic structural view of a liquid cooling device for an electric commercial vehicle provided by an embodiment of the present invention. It can be seen from the figure that the liquid cooling device 100 for an electric commercial vehicle includes a first liquid cooling plate 1 and a second liquid cooling plate 2. and piping set 3. Wherein, the interior of the first liquid cold plate 1 and the second liquid cold plate 2 is a cavity. The first liquid cooling plate 1 is provided with a first liquid inlet 11 and a first liquid outlet 12 , and the first liquid inlet 11 and the first liquid outlet 12 communicate with the inner cavity of the first liquid cooling plate 1 . The second liquid cooling plate 2 is provided with a second liquid inlet 21 and a second liquid outlet 22 , and the second liquid inlet 21 and the second liquid outlet 22 communicate with the inner cavity of the second liquid cooling plate 2 . The pipeline device 3 is arranged between the first liquid cooling plate 1 and the second liquid cooling plate 2, and is connected with the first liquid inlet 11, the first liquid outlet 12, the second liquid inlet 21 and the second liquid outlet 22 connected. It can be understood that the pipeline device 3, the first liquid inlet 11, the first liquid outlet 12, the second liquid inlet 21, the second liquid outlet 22, the inner cavity of the first liquid cold plate 1 and the second liquid The internal cavities of the cold plates 2 communicate with each other.

Fig. 2 shows a schematic structural diagram of a pipeline device provided by an embodiment of the present invention. A liquid outlet connecting piece 34 , a liquid inlet connecting pipe 35 , a liquid outlet connecting pipe 36 , a second liquid inlet connecting piece 37 , a second liquid outlet connecting piece 38 and a valve.

Wherein, the first liquid inlet connector 33 includes a first port, a second port and a third port. The first end of the total water inlet pipe 31 is fixedly connected to the valve 39, the second end of the total water inlet pipe 31 is fixedly connected to the first port, and the first end of the liquid inlet connecting pipe 35 is fixedly connected to the second port, as shown in Fig. 1 The first liquid inlet 11 is fixedly connected to the third port. Optionally, the first port, the second port and the third port communicate with each other. It can be understood that the main water inlet 32, the first liquid inlet 11 in FIG. The liquid inlet connecting pipes 35 communicate with each other through the first liquid inlet connecting piece 33 .

Please continue to refer to FIG. 2, the first end of the second liquid inlet connector 37 is fixedly connected to the second end of the liquid inlet connecting pipe 35, and the second end of the second liquid inlet connector 37 is fixedly connected to the second end of the second liquid inlet connector 37 in FIG. The second liquid inlet 21. The second liquid inlet connecting piece 37 , the liquid inlet connecting pipe 35 and the second liquid inlet 21 in FIG. 2 communicate with each other.

Please continue to refer to FIG. 2 , the first liquid outlet connector 34 includes a fourth port, a fifth port and a sixth port. The first end of the main water outlet pipe 32 is set at a position where the valve 39 is away from the first end of the main water inlet pipe 31, the second end of the main water outlet pipe 32 is fixedly connected to the fourth port, and the first end of the liquid outlet connecting pipe 36 is fixed. Connected to the fifth port, the first liquid outlet 12 in Fig. 1 is fixedly connected to the sixth port, optionally, the fourth port, the fifth port and the sixth port communicate with each other, it can be understood that the total outlet pipe 32, Fig. The first liquid outlet 12 in 1 and the liquid outlet connecting pipe 36 communicate with each other through the first liquid outlet connecting piece 34 .

Please continue to refer to FIG. 2, the first end of the second liquid outlet connector 38 is fixedly connected to the second end of the liquid outlet connecting pipe 36, and the second end of the second liquid outlet connector 38 is fixedly connected to the second end of the second liquid outlet connector 38 in FIG. The second liquid outlet 22. The second liquid outlet connecting piece 38 , the liquid outlet connecting pipe 36 and the second liquid outlet 22 in FIG. 2 communicate with each other.

Please refer to FIG. 1 and FIG. 2 in conjunction, each component of the pipeline device 3 cooperates with the first liquid cooling plate 1 and the second liquid cooling plate 2 to form a double-layer heat management device. The battery module can be placed on the first liquid cold plate 1 and the second liquid cold plate 2 and be fully in contact with the liquid cold plate, which improves the thermal management efficiency.

For example, if it is necessary to inject temperature regulating liquid into the electric commercial vehicle liquid cooling device 100 in FIG. 1, the temperature regulating liquid can be injected from the main water inlet pipe 31 in FIG. The temperature regulating liquid fills the interconnected spaces of the electric commercial vehicle liquid cooling device 100 in FIG. 1 to realize thermal management of the battery module. Thermal management, when the battery module is running in a high temperature environment, the temperature is lowered through the cooling liquid circulation; when the battery module is running in a low temperature environment, the temperature is raised through the hot liquid circulation.

Fig. 3 shows a schematic diagram of a first perspective view of a first liquid cooling plate provided by an embodiment of the present invention. It can be seen from the figure that the first liquid cooling plate includes a plurality of support parts 4, and the electric commercial vehicle liquid cooling device also includes A plurality of supporting steel sleeves 41, wherein the number of supporting parts 4 is the same as the number of supporting steel sleeves 41, the inner diameter of the supporting parts 4 is adapted to the outer diameter of the supporting steel sleeves 41, and each supporting steel sleeve 41 is arranged on each supporting part 4. The supporting steel sleeve 41 is used to support the first liquid-cooled plate, so as to prevent the first liquid-cooled plate from being deformed by force in a large area. Please continue to refer to Figure 3, the pipelines inside the first liquid cold plate are parallel strip pipelines, which can ensure that the temperature regulating liquid fills the entire liquid cold plate and increase the thermal management efficiency.

Since the structure of the second liquid cooling plate is similar to that of the first liquid cooling plate shown in FIG. 3 , no further description is given here.

Based on the above description, as shown in FIG. 4, it is a schematic structural diagram of a liquid cooling system for an electric commercial vehicle provided by an embodiment of the present invention. It can be seen from the figure that the liquid cooling system 200 for an electric commercial vehicle includes a box body 5, a first battery Components, supports, second battery assembly 6, battery management device 71, battery disconnect device 72, explosion-proof device 5 and the above-mentioned electric commercial vehicle liquid cooling device.

Wherein, the first liquid cold plate is arranged on the bottom of the box body 1, the first battery assembly is arranged on the side of the first liquid cold plate away from the bottom of the box body 1, and the support member is arranged on the side of the first battery assembly away from the first liquid cold plate position, the second battery assembly 6 is arranged at a position where the support is away from the first battery assembly, the second liquid cooling plate is arranged between the second battery assembly 6 and the support, and the pipeline device 3 is nested in the first One side wall is located between the first liquid cooling plate and the second liquid cooling plate, and the pipeline device 3, the first liquid cooling plate and the second liquid cooling plate communicate with each other.

Please continue to refer to FIG. 4 , the battery management device 71 is disposed inside the box 5 close to the first side wall, and the battery management device 71 is electrically connected to the first battery assembly and the second battery assembly. The battery disconnecting device 72 is arranged inside the box body 5 near the second side wall, the second side wall is opposite to the first side wall, the battery disconnecting device 72 is electrically connected with the first battery assembly and the second battery assembly, and the explosion-proof device 73 Nested on the second side wall of the box body 5 . It can be seen from Figure 4 that the electric commercial vehicle liquid cooling device can be well coordinated with other components, which increases space utilization and improves thermal management efficiency.

In summary, the electric commercial vehicle liquid cooling device and liquid cooling system provided in the embodiment of the present invention have cleverly designed the structure, the first liquid cooling plate, the second liquid cooling plate and the pipeline device are connected to each other, and are connected to other The components are coordinated, and the whole plate structure design of the liquid cooling plate can increase the contact area between the battery module and the liquid cooling plate, which increases the space utilization and improves the thermal management efficiency.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (10)

1. A liquid cooling device for an electric commercial vehicle, which is applied to a battery assembly of a commercial vehicle, and is characterized in that it comprises: a first liquid cooling plate, a second liquid cooling plate and a piping device; The interior of the first liquid cold plate and the second liquid cold plate is a cavity; The first liquid cold plate is provided with a first liquid inlet and a first liquid outlet, and the first liquid inlet and the first liquid outlet communicate with the interior of the first liquid cold plate; The second liquid cold plate is provided with a second liquid inlet and a second liquid outlet, and the second liquid inlet and the second liquid outlet communicate with the inside of the second liquid cold plate; The pipeline device is arranged between the first liquid cooling plate and the second liquid cooling plate, and is connected with the first liquid inlet, the first liquid outlet, the second liquid inlet and the The second liquid outlet is connected. 2. The electric commercial vehicle liquid cooling device according to claim 1, characterized in that, the pipeline device includes a main water inlet pipe, a main water outlet pipe, a valve, a first liquid inlet connector, a first liquid outlet connection piece, the liquid inlet connecting pipe, the liquid outlet connecting pipe, the second liquid inlet connecting piece, the second liquid outlet connecting piece; The first end of the main water inlet pipe is arranged at the valve; The first liquid inlet connector is respectively arranged on the second end of the main water inlet pipe, the first end of the liquid inlet communication pipe and the first liquid inlet; the first liquid inlet is connected to parts, the second end of the main water inlet pipe, the first end of the liquid inlet connecting pipe and the first liquid inlet are connected to each other; The second liquid inlet connecting piece is respectively arranged on the second end of the liquid inlet connecting pipe and the second liquid inlet; the second liquid inlet connecting piece, the connecting pipe of the liquid inlet The second end communicates with the second liquid inlet; The first end of the main water outlet pipe is arranged at the valve, and is located at a position where the valve is away from the first end of the main water inlet pipe; The first liquid outlet connector is respectively arranged on the second end of the main water outlet pipe, the first end of the liquid outlet communication pipe and the first liquid outlet; the first liquid outlet is connected to Parts, the second end of the main water outlet pipe, the first end of the liquid outlet communication pipe and the first liquid outlet communicate with each other; The second liquid outlet connecting piece is respectively arranged on the second end of the liquid outlet connecting pipe and the second liquid outlet; the second liquid outlet connecting piece, the liquid outlet connecting pipe The second end communicates with the second liquid outlet. 3. The electric commercial vehicle liquid cooling device according to claim 2, characterized in that, the first liquid inlet connector includes a first port, a second port and a third port; The second end of the main water inlet pipe is arranged at the first port of the first liquid inlet connector; The first end of the liquid inlet connecting pipe is arranged at the second port of the first liquid inlet connecting piece; The first liquid inlet is arranged at the third port of the first liquid inlet connecting piece; The first port, the second port and the third port communicate with each other. 4. The electric commercial vehicle liquid cooling device according to claim 2, characterized in that, the first liquid outlet connector includes a fourth port, a fifth port and a sixth port; The second end of the main water outlet pipe is arranged at the fourth port of the first liquid outlet connector; The first end of the liquid outlet connecting pipe is arranged at the fifth port of the first liquid outlet connecting piece; The first liquid outlet is arranged at the sixth port of the first liquid outlet connection piece; The fourth port, the fifth port and the sixth port communicate with each other. 5. The electric commercial vehicle liquid cooling device according to claim 1, wherein the first liquid inlet is arranged at the first end of the first liquid cooling plate, and the first liquid outlet is arranged at the first end of the first liquid cooling plate. The first end of the first liquid cooling plate is located at a position where the first liquid cooling plate is away from the first liquid inlet; The second liquid inlet is arranged at the first end of the second liquid cold plate, and the second liquid outlet is arranged at the first end of the second liquid cold plate and is located on the second liquid cold plate away from the position of the second liquid inlet. 6. The electric commercial vehicle liquid cooling device according to claim 1, characterized in that, the electric commercial vehicle liquid cooling device further comprises a plurality of supporting steel sleeves, the first liquid cooling plate and the second liquid cooling The edges of the plates are respectively provided with a plurality of supporting parts, and the number of the supporting steel sleeves is the same as the number of the supporting parts; Each of the supporting steel sleeves is disposed on each of the supporting parts. 7. A liquid cooling system for an electric commercial vehicle, characterized in that the liquid cooling system for an electric commercial vehicle comprises: a battery pack and the liquid cooling device for an electric commercial vehicle according to any one of claims 1-6; The electric commercial vehicle liquid cooling device is arranged on the battery pack. 8. The electric commercial vehicle liquid cooling system according to claim 7, wherein the battery pack comprises a box body, a first battery assembly, a support and a second battery assembly; The first liquid cold plate is located inside the box and is arranged at the bottom of the box, the first battery assembly is arranged on the first liquid cold plate and is located away from the first liquid cold plate from the box the position of the bottom of the body; The support member is arranged on the first battery assembly and is located at a position where the first battery assembly is away from the first liquid cooling plate; The second battery assembly is arranged on the support member and is located at a position where the support member is away from the first battery assembly; The second liquid cold plate is arranged between the second battery assembly and the support member; The pipeline device is nested on the first side wall of the box and is located between the first liquid cold plate and the second liquid cold plate; the pipeline device, the first liquid cold plate communicate with the second liquid cold plate. 9. The electric commercial vehicle liquid cooling system according to claim 8, wherein the battery pack further comprises a battery management device; The battery management device is arranged inside the box, and is located inside the box close to the first side wall; The battery management device is electrically connected to the first battery assembly and the second battery assembly. 10. The electric commercial vehicle liquid cooling system according to claim 9, wherein the battery pack further comprises a battery cut-off device; The battery disconnecting device is arranged inside the box and is located inside the box close to the second side wall, the first side wall is opposite to the second side wall; The battery disconnecting device is electrically connected with the first battery assembly and the second battery assembly.