Liquid cooling plate, battery pack and electric equipment

Abstract

The utility model belongs to the technical field of batteries, and discloses a liquid cooling plate, which comprises a runner plate provided with a runner; the flow channel sequentially comprises a water inlet main flow channel, a first water distribution flow channel, a long straight flow channel, a second water distribution flow channel and a water return main flow channel in the fluid flowing direction so as to at least achieve stable flow speed of the long straight flow channel. By designing the long straight flow channel, the battery in the module is fully positioned in the liquid cooling flow channel of the liquid cooling plate, and meanwhile, by reasonably designing the flow channel layout, the heat dissipation effect of the battery pack is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a liquid cooling plate. Background Art

[0002] In recent years, in order to improve the volume energy density of energy storage systems, more and more companies have begun to develop cells that are beneficial to improving the volume energy density of the system. This type of cell is relatively small in thickness. For example, the blade battery has a flexible structure and is easier to improve volume utilization. It has attracted the attention of many manufacturers. The obvious difference in structure from traditional square batteries is that the thickness of the blade battery is relatively small in thickness, usually only 10mm-30mm, which may cause some blade batteries in the module to not be fully located in the liquid cooling channel of the liquid cooling plate, and the flow channel layout design is unreasonable, causing a large temperature difference in the cell, which in turn makes the heat dissipation effect of the battery pack poor. Utility Model Content

[0003] The purpose of the utility model is to provide a liquid cooling plate with a reasonable heat dissipation layout, which can make the batteries in the module fully located in the liquid cooling channel of the liquid cooling plate by designing a long straight channel, and at the same time, by reasonably designing the channel layout, effectively improve the heat dissipation effect of the battery module and / or battery pack. A first aspect of the utility model includes: a channel plate, the channel plate is provided with a channel;

[0004] The flow channel includes a water inlet main channel, a first water diversion channel, a long straight flow channel, a second water diversion channel and a return water main channel in sequence according to the fluid flow direction, so as to at least achieve uniform and stable flow rate in the long straight flow channel.

[0005] Furthermore, one end of the water inlet main channel is used to be connected to the water inlet and the other end is at least partially connected to the first water diversion channel; the first water diversion channel is at least partially connected to the long straight channel, mainly used to separate the fluid in the water inlet main channel to increase the turbulence effect, and to make the fluid enter the long straight channel evenly; the second water diversion channel is at least partially connected to the long straight channel and at least partially connected to the return water main channel, mainly used to play a turbulence effect to make the fluid in the long straight channel flow out evenly; the long straight channel is mainly used to take away the heat from the heat source; the return water main channel has one end for connecting to the water outlet.

[0006] Optionally, the liquid cooling plate has a first direction and a second direction, and a cross-sectional shape of the flow channel on a plane perpendicular to the first direction and the second direction is circular, square or irregular.

[0007] Furthermore, there is at least one flow channel.

[0008] Optionally, the first water diversion channel and / or the second water diversion channel are formed by separating the fluids by at least one separator including at least one of a cylindrical, strip, triangular, and L-shaped separator.

[0009] Furthermore, the partition of the first water diversion channel is located at the inlet of the long straight channel, and the partition of the second water diversion channel is located at the outlet of the long straight channel.

[0010] Further, the partition of the first water diversion channel and / or the second water diversion channel is cylindrical, and the center line of the cylinder is aligned with the center line of the long straight channel in the first direction.

[0011] Furthermore, a plurality of partitions are provided along the first direction and are staggered in distribution, and a plurality of partitions are provided along the second direction and are evenly spaced in distribution.

[0012] Optionally, there is at least one long direct current channel.

[0013] A battery pack according to the second aspect of this embodiment includes the liquid cooling plate of the embodiment of the second aspect mentioned above.

[0014] An electrical device according to the third aspect of the present embodiment includes the battery pack of the second aspect described above.

[0015] By designing a long straight flow channel, the batteries in the module are fully located in the liquid cooling flow channel of the liquid cooling plate. At the same time, by reasonably designing the flow channel layout, the heat dissipation effect of the battery module and / or battery pack is effectively improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The following drawings of the embodiments of the present invention are used as a part of the present invention for understanding the present invention. The drawings show the embodiments of the present invention and their descriptions, and are used to explain the principle of the present invention.

[0017] Figure 1 It is a schematic diagram of the overall flow channel layout of the liquid cooling plate;

[0018] In the figure:

[0019] 1. Main water inlet channel; 2. First water diversion channel; 3. Long straight channel; 4. Second water diversion channel;

[0020] 5. Return water main channel; 6. Water outlet; 7. Water inlet. DETAILED DESCRIPTION

[0021] In the following description, a large number of specific details are given in order to provide a more thorough understanding of the utility model. However, it is obvious to those skilled in the art that the embodiments of the utility model can be implemented without one or more of these details. In other examples, in order to avoid confusion with the embodiments of the utility model, some technical features known in the art are not described. The utility model is further described in detail below in conjunction with the accompanying drawings and examples. It is understood that the specific embodiments described herein are only used to explain the utility model, rather than to limit the utility model. It should also be noted that, for ease of description, only parts related to the utility model rather than all structures are shown in the accompanying drawings.

[0022] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected" and "fixed" 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 directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0024] In the description of this embodiment, the terms "upper", "lower", "right", etc., and the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or semiconductor referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model.

[0025] In order to effectively improve the heat dissipation effect of the battery pack, this embodiment provides a liquid cooling plate.

[0026] like Figure 1 As shown, a liquid cooling plate comprises: a flow channel plate, wherein the flow channel plate is provided with a flow channel;

[0027] The flow channel includes a water inlet main channel 1, a first water diversion channel 2, a long straight flow channel 3, a second water diversion channel 4 and a return water main channel 5 in order to achieve at least a uniform and stable flow rate in the long straight flow channel 3.

[0028] In this embodiment, one end of the water inlet main channel 1 is used to connect with the water inlet 7 and the other end is partially connected to the first water diversion channel 2; the first water diversion channel 2 is partially connected to the long straight channel 3, mainly used to separate the water inlet main channel fluid 1 to increase the turbulence effect, and to make the fluid enter the long straight channel 3 evenly; the second water diversion channel 4 is partially connected to the long straight channel 3 and partially connected to the return water main channel 5, mainly used to play a turbulence effect to make the fluid in the long straight channel 3 flow out evenly; the long straight channel 3 is mainly used to take away the heat from the heat source; the return water main channel 5 has one end for connecting with the water outlet 6.

[0029] Optionally, the liquid cooling plate has a first direction and a second direction, and a cross-sectional shape of the flow channel on a plane perpendicular to the first direction and the second direction is circular, square or irregular.

[0030] Optionally, there is at least one flow channel.

[0031] Optionally, the first water diversion channel 2 and / or the second water diversion channel 4 are formed by separating the fluids by at least one separator having at least one of a cylindrical, strip, triangular, and L-shaped shape.

[0032] Furthermore, the partition of the first water diversion channel is located at the inlet of the long straight channel, and the partition of the second water diversion channel is located at the outlet of the long straight channel.

[0033] Further, the partition of the first water diversion channel and / or the second water diversion channel is cylindrical, and the center line of the cylinder is aligned with the center line of the long straight channel in the first direction.

[0034] Furthermore, a plurality of partitions are provided along the first direction and are staggered in distribution, and a plurality of partitions are provided along the second direction and are evenly spaced in distribution.

[0035] In this embodiment, the separator is provided with circular, rectangular, and L-shaped bosses for separating the fluid, so as to increase the flow disturbance effect and make the fluid flow velocity in the long straight channel 3 uniform and stable.

[0036] Optionally, there is at least one long direct current channel.

[0037] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A liquid cooling plate for heat dissipation of a battery pack, characterized in that: The liquid cooling plate comprises: A flow channel plate, wherein the flow channel plate is provided with a flow channel; The flow channel includes a water inlet main channel, a first water diversion channel, a long straight flow channel, a second water diversion channel and a return water main channel in sequence according to the fluid flow direction, so as to at least achieve uniform and stable flow rate in the long straight flow channel.

2. The liquid cooling plate according to claim 1, characterized in that: One end of the main water inlet channel is used to be connected to the water inlet, and the other end is at least partially connected to the first water diversion channel; The first water diversion channel is at least partially connected to the long straight flow channel, and is mainly used to separate the fluid in the water inlet main flow channel to increase the flow disturbance effect, and to make the fluid enter the long straight flow channel evenly; The second water diversion channel is at least partially connected to the long straight flow channel and at least partially connected to the return water main flow channel, and is mainly used to disturb the flow so that the fluid in the long straight flow channel flows out evenly; the long straight flow channel is mainly used to remove heat from the heat source; The main return water channel has one end for connecting with the water outlet.

3. The liquid cooling plate according to claim 2, characterized in that: The liquid cooling plate has a first direction and a second direction, and the cross-sectional shape of the flow channel on a plane perpendicular to the first direction and the second direction is circular, square or irregular.

4. The liquid cooling plate according to claim 3, characterized in that: There is at least one flow channel.

5. The liquid cooling plate according to claim 4, characterized in that: The first water diversion channel and / or the second water diversion channel are formed by separating the fluid by at least one separator including at least one of a cylindrical, strip, triangular, and L-shaped separator.

6. The liquid cooling plate according to claim 5, characterized in that: The partition of the first water diversion channel is located at the inlet of the long straight channel, and the partition of the second water diversion channel is located at the outlet of the long straight channel.

7. The liquid cooling plate according to claim 6, characterized in that: The partition of the first water diversion channel and / or the second water diversion channel is cylindrical, and the center line of the cylinder is aligned with the center line of the long straight channel in the first direction.

8. The liquid cooling plate according to claim 7, characterized in that: A plurality of partitions are arranged along the first direction, and the partitions are distributed at staggered intervals. A plurality of partitions are arranged along the second direction, and the plurality of partitions are distributed at even intervals.

9. The liquid cooling plate according to claim 8, characterized in that: The number of the long direct current channel is at least one.

10. A battery pack, characterized in that: The liquid cooling plate comprises the liquid cooling plate according to any one of claims 1 to 9.

11. An electrical device, characterized in that: A battery pack comprising the battery pack described in claim 10.

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