Heat dissipation liquid cooling plate and energy storage module

Abstract

The utility model belongs to the technical field of battery heat dissipation, and particularly relates to a heat dissipation liquid cooling plate and an energy storage module, the heat dissipation liquid cooling plate comprises a liquid cooling plate body, the liquid cooling plate body is provided with a plurality of liquid inlet flow channels and a plurality of liquid outlet flow channels which are staggered and parallel, and each liquid inlet flow channel comprises a liquid inlet section, a first-stage forked liquid inlet section and a second-stage forked liquid inlet section which are connected in sequence; the liquid outlet flow channel comprises a liquid outlet section, a first-stage forked liquid outlet section and a second-stage forked liquid outlet section which are connected in sequence, the end part, far away from the liquid outlet section, of the second-stage forked liquid outlet section communicates with the end parts of the two adjacent second-stage forked liquid inlet sections, and the liquid inlet section and the liquid outlet section are located on the same side of the liquid cooling plate body; the liquid inlet flow channel and the liquid outlet flow channel are of a multi-stage branched multi-path flow channel structure, and the cooling fluid can flow in and out from the same side of the liquid cooling plate body, so that the uniformity of temperature distribution on the surface of the liquid cooling plate body is improved, and the heat dissipation uniformity and the heat dissipation efficiency are improved.

Description

Technical Field

[0001] This utility model belongs to the field of battery heat dissipation technology, specifically relating to a heat dissipation liquid cooling plate and an energy storage module. Background Technology

[0002] As a key unit of the energy storage system, the energy storage module generates a lot of heat during operation. If it cannot be dissipated in time, the temperature inside the battery cell and energy storage battery compartment will rise rapidly, affecting the battery performance and reducing its lifespan. If it cannot dissipate heat for a long time, it will lead to thermal runaway of the battery cell.

[0003] Heat dissipation in energy storage products is mainly divided into air cooling and liquid cooling. Air cooling has drawbacks such as difficulty in air duct layout and low heat dissipation efficiency. Liquid cooling solutions typically add a liquid cooling plate and corresponding pipes under the module. Existing liquid cooling plates usually have only one inlet and one outlet. The temperature is lower near the inlet and higher near the outlet, which causes uneven heat dissipation, affects heat dissipation efficiency, and is not conducive to stable battery operation. In addition, the distance between the inlet and outlet is too far, which also causes uneven heat dissipation. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a heat dissipation liquid cooling plate and an energy storage module, which improves the heat dissipation uniformity and heat dissipation efficiency.

[0005] This invention provides a heat dissipation liquid cooling plate, comprising: a liquid cooling plate body having multiple parallel and intersecting liquid inlet channels and multiple liquid outlet channels, wherein the liquid inlet channels include a liquid inlet section, a primary branched liquid inlet section, and a secondary branched liquid inlet section connected in sequence; the liquid outlet channels include a liquid outlet section, a primary branched liquid outlet section, and a secondary branched liquid outlet section connected in sequence, wherein the end of the secondary branched liquid outlet section away from the liquid outlet section is connected to the ends of two adjacent secondary branched liquid inlet sections, and the liquid inlet section and the liquid outlet section are located on the same side of the liquid cooling plate body.

[0006] Optionally, the primary branching liquid outlet section includes two primary outlet channels, and each primary outlet channel is connected to a secondary branching liquid outlet section. Each secondary branching liquid outlet section includes two secondary outlet channels. The secondary branching liquid inlet section includes two secondary inlet channels, and the two secondary outlet channels are respectively connected to the two secondary inlet channels.

[0007] Optionally, multiple inlet channels and multiple outlet channels form a symmetrical structure, and the symmetrical plane is the middle interface of the liquid cooling plate body.

[0008] Optionally, the length of the plurality of liquid inlet sections gradually decreases from the middle to both sides, and the plurality of liquid inlet sections are flush with the ends near the edge of the liquid cooling plate body, and an outlet section is provided between two adjacent liquid inlet sections.

[0009] Optionally, the liquid inlet section is perpendicular to the first-stage bifurcation liquid inlet section, and the first-stage bifurcation liquid inlet section extends to the outside of the liquid cooling plate body. Correspondingly, the liquid outlet section is perpendicular to the first-stage bifurcation liquid outlet section, and the first-stage bifurcation liquid outlet section extends to the outside of the liquid cooling plate body.

[0010] Optionally, the secondary bifurcation inlet section is parallel to the inlet section, and correspondingly, the secondary bifurcation outlet section is parallel to the outlet section.

[0011] Optionally, the inlet section and the first-stage bifurcation inlet section, the first-stage bifurcation inlet section and the second-stage bifurcation inlet section, the second-stage bifurcation inlet section and the second-stage bifurcation outlet section, the outlet section and the first-stage bifurcation outlet section, and the first-stage bifurcation outlet section and the second-stage bifurcation outlet section are all transitioned by arc sections.

[0012] Optionally, the heat dissipation liquid cooling plate also includes a bracket plate disposed at the bottom of the liquid cooling plate body and a plurality of mounting beams disposed at the top edge of the liquid cooling plate body, the mounting beams being used to connect other components of the energy storage module.

[0013] The present invention provides an energy storage module, comprising: a side frame, a battery, a battery management unit, and a heat dissipation liquid cooling plate; the heat dissipation liquid cooling plate is fixedly connected to the bottom of the side frame;

[0014] The battery is disposed within the side frame and located on top of the heat dissipation liquid cooling plate;

[0015] The battery management unit is fixedly mounted on the top of the side frame and is used to monitor the battery's operating status.

[0016] Optionally, a thermally conductive layer is provided between the heat dissipation liquid cooling plate and the battery.

[0017] The beneficial effects of the present invention are that the liquid cooling plate body is provided with multiple liquid inlet channels and multiple liquid outlet channels. By directly introducing the cooling fluid into the multiple liquid inlet channels, and since the liquid inlet channels and liquid outlet channels are multi-level branched into multiple channels, and the cooling fluid can flow in and out from the same side of the liquid cooling plate body, the uniformity of temperature distribution on the surface of the liquid cooling plate body is improved, thereby improving the heat dissipation uniformity and heat dissipation efficiency.

[0018] The heat dissipation liquid cooling plate provided by this invention enables the energy storage module to have high heat dissipation efficiency and can quickly reduce the battery temperature. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the heat dissipation liquid cooling plate of the present invention;

[0020] Figure 2 This is a schematic diagram of the structure of the liquid cooling plate body of the present invention;

[0021] Figure 3This is a schematic diagram of the energy storage module of the present invention.

[0022] In the diagram: 100, heat dissipation liquid cooling plate; 110, liquid cooling plate body; 120, liquid inlet channel; 121, liquid inlet section; 122, primary branch liquid inlet section; 123, secondary branch liquid inlet section; 130, liquid outlet channel; 131, liquid outlet section; 132, primary branch liquid outlet section; 133, secondary branch liquid outlet section; 140, bracket plate; 150, mounting beam; 200, side frame; 300, battery management unit. Detailed Implementation

[0023] like Figure 1 and Figure 2 As shown, the present invention provides a heat dissipation liquid cooling plate 100, comprising: a liquid cooling plate body 110 having multiple parallel liquid inlet channels 120 and multiple liquid outlet channels 130, wherein the liquid inlet channel 120 includes a liquid inlet section 121, a primary branch liquid inlet section 122, and a secondary branch liquid inlet section 123 connected in sequence; the liquid outlet channel 130 includes a liquid outlet section 131, a primary branch liquid outlet section 132, and a secondary branch liquid outlet section 133 connected in sequence, wherein the end of the secondary branch liquid outlet section 133 away from the liquid outlet section 131 is connected to the ends of two adjacent secondary branch liquid inlet sections 123, and the liquid inlet section 121 and the liquid outlet section 131 are located on the same side of the liquid cooling plate body 110.

[0024] Compared with the prior art, the heat dissipation liquid cooling plate 100 provided by the present invention has multiple liquid inlet channels 120 and multiple liquid outlet channels 130 in the liquid cooling plate body 110. By directly introducing the cooling fluid into the multiple liquid inlet channels 120, since the liquid inlet channels 120 and the liquid outlet channels 130 have a multi-stage branching structure into multiple channels, and the cooling fluid can flow in and out from the same side of the liquid cooling plate body 110, the uniformity of temperature distribution on the surface of the liquid cooling plate body 110 is improved, thereby improving the heat dissipation uniformity and heat dissipation efficiency.

[0025] It should be noted that the cooling fluid can be either refrigerant or cooling oil. When the cooling fluid is refrigerant, it is directly introduced into the flow channel of the cold plate, where it exchanges heat with the battery through evaporation and phase change.

[0026] In one embodiment, the primary branching liquid outlet section 132 includes two primary outlet channels, and each primary outlet channel is connected to a secondary branching liquid outlet section 133. Each secondary branching liquid outlet section 133 includes two secondary outlet channels. The secondary branching liquid inlet section 123 includes two secondary inlet channels, and the two secondary outlet channels are respectively connected to the two secondary inlet channels. It can be understood that the liquid outlet section 131 branches into two primary outlet channels and secondary branching liquid outlet sections 133, and each of the secondary branching liquid outlet sections 133 further branches into two secondary branching liquid outlet sections 133, thus forming four secondary branching liquid outlet sections 133. Two of these four secondary branching liquid outlet sections 133 are respectively connected to the secondary branching liquid inlet section 123 of the adjacent liquid inlet channel 120, making the secondary branching liquid inlet sections 123 and the secondary branching liquid outlet sections 133 more densely packed, which can extend to most areas of the liquid cooling plate body 110 and improve the uniformity of heat dissipation.

[0027] In one embodiment, the plurality of liquid inlet channels 120 and the plurality of liquid outlet channels 130 form a symmetrical structure, and the symmetrical plane is the middle interface of the liquid cooling plate body 110. It can be understood that the plurality of liquid inlet channels 120 and the plurality of liquid outlet channels 130 are more evenly distributed within the liquid cooling plate body 110, which is beneficial to improving heat dissipation efficiency.

[0028] In one embodiment, the length of multiple liquid inlet sections 121 gradually decreases from the middle to both sides, and the ends of the multiple liquid inlet sections 121 located near the edge of the liquid cooling plate body 110 are flush. An outlet section 131 is provided between two adjacent liquid inlet sections 121. This arrangement facilitates the unified connection of the multiple liquid inlet sections 121 and the multiple liquid outlet sections 131 to the external refrigeration cycle system.

[0029] In one embodiment, the liquid inlet section 121 is perpendicular to the primary branch liquid inlet section 122, and the primary branch liquid inlet section 122 extends outward from the liquid cooling plate body 110. Correspondingly, the liquid outlet section 131 is perpendicular to the primary branch liquid outlet section 132, and the primary branch liquid outlet section 132 extends outward from the liquid cooling plate body 110. It is understood that the multiple liquid inlet sections 121 and multiple liquid outlet sections 131 are concentrated in the middle position on one side of the liquid cooling plate body 110, reducing the space occupied by the multiple liquid inlet sections 121 and multiple liquid outlet sections 131, and making the components connecting the multiple liquid inlet sections 121 and multiple liquid outlet sections 131 smaller, which is beneficial to reducing the volume of the liquid cooling plate body 110.

[0030] In one embodiment, the secondary bifurcation inlet section 123 is parallel to the inlet port section 121, and correspondingly, the secondary bifurcation outlet section 133 is parallel to the outlet port section 131. This facilitates the processing and shaping of multiple inlet channels 120 and multiple outlet channels 130.

[0031] In one embodiment, the transitions between the inlet section 121 and the primary branch inlet section 122, between the primary branch inlet section 122 and the secondary branch inlet section 123, between the secondary branch inlet section 123 and the secondary branch outlet section 133, between the outlet section 131 and the primary branch outlet section 132, and between the primary branch outlet section 132 and the secondary branch outlet section 133 are all via arc segments. This is to reduce the resistance to the flow of cooling fluid and improve heat dissipation efficiency.

[0032] In one embodiment, the heat dissipation liquid cooling plate 100 further includes a bracket plate 140 disposed at the bottom of the liquid cooling plate body 110 and a plurality of mounting beams 150 disposed at the top edge of the liquid cooling plate body 110. The mounting beams 150 are used to connect other components of the energy storage module. Specifically, the bracket plate 140 mainly supports the liquid cooling plate body 110 and improves the mechanical strength of the heat dissipation liquid cooling plate 100. The bracket plate 140 and the mounting beams 150 are welded and fixed to the liquid cooling plate body 110. Preferably, the welding method is a stamping brazing process. The mounting beams 150 have mounting holes, and the mounting beams 150 are fixedly connected to other components of the energy storage module by bolts.

[0033] like Figure 3 As shown, this invention provides an energy storage module, including: a side frame 200, a battery (not shown in the figure because it is inside the side frame 200), a battery management unit 300, and a heat dissipation liquid cooling plate 100; the heat dissipation liquid cooling plate 100 is fixedly connected to the bottom of the side frame 200; the battery is disposed inside the side frame 200 and located on top of the heat dissipation liquid cooling plate 100; the battery management unit 300 is fixedly disposed on the top of the side frame 200 for monitoring the operating status of the battery. Through the heat dissipation liquid cooling plate 100 provided by this invention, the energy storage module has high heat dissipation efficiency and can rapidly reduce the battery temperature.

[0034] In one embodiment, a thermally conductive layer (not shown) is provided between the heat dissipation liquid cooling plate 100 and the battery. The thermally conductive layer may be formed using thermally conductive silicone grease, with the aim of improving the heat exchange efficiency between the heat dissipation liquid cooling plate 100 and the battery.

[0035] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of protection of this application is limited to these examples; within the framework of this application, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of one or more embodiments of this application as described above, which are not provided in detail for the sake of brevity.

[0036] One or more embodiments in this application are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of this application. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of one or more embodiments in this application should be included within the protection scope of this application.

Claims

1. A heat dissipation liquid cooling plate, characterized in that, include: The liquid cooling plate body (110) has multiple parallel liquid inlet channels (120) and multiple liquid outlet channels (130). The liquid inlet channel (120) includes a liquid inlet section (121), a primary branch liquid inlet section (122), and a secondary branch liquid inlet section (123) connected in sequence. The liquid outlet channel (130) includes a liquid outlet section (131), a primary branch liquid outlet section (132), and a secondary branch liquid outlet section (133) connected in sequence. The end of the secondary branch liquid outlet section (133) away from the liquid outlet section (131) is connected to the ends of two adjacent secondary branch liquid inlet sections (123). The liquid inlet section (121) and the liquid outlet section (131) are located on the same side of the liquid cooling plate body (110).

2. The heat dissipation liquid cooling plate according to claim 1, characterized in that, The primary branching liquid outlet section (132) includes two primary outlet channels, and each primary outlet channel is connected to a secondary branching liquid outlet section (133). Each secondary branching liquid outlet section (133) includes two secondary outlet channels. The secondary branching liquid inlet section (123) includes two secondary inlet channels. The two secondary outlet channels are respectively connected to the two secondary inlet channels.

3. The heat dissipation liquid cooling plate according to claim 2, characterized in that, Multiple inlet channels (120) and multiple outlet channels (130) form a symmetrical structure, and the symmetrical plane is the middle interface of the liquid cooling plate body (110).

4. The heat dissipation liquid cooling plate according to claim 3, characterized in that, The length of the multiple liquid inlet sections (121) gradually shortens from the middle to both sides, and the ends of the multiple liquid inlet sections (121) are flush with the edge of the liquid cooling plate body (110), and an outlet section (131) is provided between two adjacent liquid inlet sections (121).

5. The heat dissipation liquid cooling plate according to any one of claims 1-4, characterized in that, The liquid inlet section (121) is perpendicular to the first-stage bifurcation liquid inlet section (122), and the first-stage bifurcation liquid inlet section (122) extends to the outside of the liquid cooling plate body (110). Correspondingly, the liquid outlet section (131) is perpendicular to the first-stage bifurcation liquid outlet section (132), and the first-stage bifurcation liquid outlet section (132) extends to the outside of the liquid cooling plate body (110).

6. The heat dissipation liquid cooling plate according to claim 5, characterized in that, The secondary bifurcation inlet section (123) is parallel to the inlet section (121), and correspondingly, the secondary bifurcation outlet section (133) is parallel to the outlet section (131).

7. The heat dissipation liquid cooling plate according to claim 6, characterized in that, The inlet section (121) and the first-level branch inlet section (122), the first-level branch inlet section (122) and the second-level branch inlet section (123), the second-level branch inlet section (123) and the second-level branch outlet section (133), the outlet section (131) and the first-level branch outlet section (132), and the first-level branch outlet section (132) and the second-level branch outlet section (133) are all connected by arc sections.

8. The heat dissipation liquid cooling plate according to any one of claims 1-4, 6, and 7, characterized in that, It also includes a bracket plate (140) disposed at the bottom of the liquid cooling plate body (110) and a plurality of mounting beams (150) disposed at the top edge of the liquid cooling plate body (110), the mounting beams (150) being used to connect other components of the energy storage module.

9. An energy storage module, characterized in that, include: Side frame (200), battery, battery management unit (300), heat dissipation liquid cooling plate (100) as described in any one of claims 1-8; the heat dissipation liquid cooling plate (100) is fixedly connected to the bottom of the side frame (200); The battery is disposed within the side frame (200) and located on top of the heat dissipation liquid cooling plate (100); The battery management unit (300) is fixedly mounted on the top of the side frame (200) and is used to monitor the operating status of the battery.

10. The energy storage module according to claim 9, characterized in that, A heat-conducting layer is provided between the heat dissipation liquid cooling plate (100) and the battery.

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