Liquid-cooling heat management system and energy storage device

Abstract

The utility model discloses a liquid cooling heat management system and an energy storage device, the liquid cooling heat management system comprises a liquid cooling plate and a cooling pipeline, and the liquid cooling plate is provided with a cooling liquid inlet and a cooling liquid outlet; the cooling pipeline comprises a first-stage pipeline and a second-stage pipeline, the first-stage pipeline is provided with a liquid inlet branch opening and a liquid outlet branch opening, the second-stage pipeline comprises a second-stage liquid inlet pipeline and a second-stage liquid outlet pipeline, one end of the second-stage liquid inlet pipeline is communicated with the liquid inlet branch opening, and the other end of the second-stage liquid inlet pipeline is connected with the multiple cooling liquid inlets in series; one end of the second-stage liquid outlet pipeline communicates with the liquid outlet branch opening, and the other end of the second-stage liquid outlet pipeline is connected with the multiple cooling liquid outlets in series. According to the utility model, all the liquid cooling plates are connected in series by directly adopting the secondary liquid inlet pipeline and the secondary liquid outlet pipeline, so that the structure is simpler, the energy consumption is lower, and the effect of reducing the cost is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage liquid cooling and heat management, and in particular to a liquid cooling and heat management system and an energy storage device. Background Art

[0002] The energy storage device is generally provided with a liquid cooling thermal management system inside, and coolant is introduced into the cooling pipeline of the liquid cooling thermal management system to cool down each battery module to ensure the normal operation of each battery module. The existing energy storage liquid cooling thermal management system structure mainly includes a primary pipeline, a secondary pipeline and a tertiary pipeline, etc. For example, the applicant of this application has obtained the Chinese utility model patent "A Liquid Cooling Energy Storage Container" with the authorization announcement number CN219832795U. This technology effectively dissipates heat from the battery module through the primary pipeline, the secondary pipeline and the tertiary pipeline, and sets the primary pipeline at the bottom of the battery cluster, which solves the technical problem that the liquid cooling pipeline is inconvenient to install and maintain.

[0003] However, the uniformity of system flow and the size of system pressure drop are two criteria for evaluating the quality of liquid cooling management systems. The better the uniformity of flow, the better the temperature uniformity of the liquid cooling thermal management system. The smaller the system pressure drop, the less energy the water pump consumes and the lower the cost. Therefore, this application optimizes the above-mentioned prior art to reduce the loss along the pipeline system, thereby reducing the system pressure drop to achieve the purpose of reducing energy consumption. Utility Model Content

[0004] The purpose of the utility model is to overcome the above-mentioned technical deficiencies and provide a liquid cooling thermal management system and an energy storage device to optimize the design of the existing liquid cooling thermal management system, making its structure simpler and energy consumption lower, thereby achieving a cost reduction effect.

[0005] In order to achieve the above technical objectives, the technical solution of the utility model provides a liquid cooling thermal management system, including a liquid cooling plate and a cooling pipeline, the liquid cooling plate has a coolant inlet and a coolant outlet; the cooling pipeline includes a primary pipeline and a secondary pipeline, the primary pipeline has an inlet branch and an outlet branch, the secondary pipeline includes a secondary inlet pipeline and a secondary outlet pipeline, one end of the secondary inlet pipeline is connected to the inlet branch, the other end of the secondary inlet pipeline is connected in series with multiple coolant inlets, one end of the secondary outlet pipeline is connected to the outlet branch, and the other end of the secondary outlet pipeline is connected in series with multiple coolant outlets.

[0006] Furthermore, the secondary liquid inlet pipeline and the secondary liquid outlet pipeline are both composed of multiple sections of secondary branch pipelines connected in series, and each section of the secondary branch pipeline is arranged between each two adjacent liquid cooling plates and is connected to the coolant inlet and the coolant outlet.

[0007] Furthermore, the secondary pipeline also includes a connecting piece, and two ends of the connecting piece are respectively connected to the secondary branch pipeline and the liquid cooling plate.

[0008] Furthermore, the connecting member includes a first joint and a second joint that are adapted to each other, the first joint is welded to the coolant inlet or the coolant outlet, the second joint is arranged at both ends of the secondary branch pipeline, and the secondary branch pipeline is connected to the liquid cooling plate through the first joint and the second joint.

[0009] Furthermore, the connecting piece includes a connecting pipe, one end of which is welded to the coolant inlet or the coolant outlet, and the other end of which is crimped to the pipe opening of the secondary branch pipeline.

[0010] Furthermore, the connecting piece also includes a clamp, which is tightly clamped at the joint between the connecting pipe and the secondary branch pipeline.

[0011] Furthermore, the first-level pipeline includes a first-level liquid inlet pipeline and a first-level liquid outlet pipeline, the first-level liquid inlet pipeline has a plurality of the liquid inlet branches, the first-level liquid outlet pipeline has a plurality of the liquid outlet branches, the first-level liquid inlet pipeline is connected to the second-level liquid inlet pipeline through the liquid inlet branch, and the first-level liquid outlet pipeline is connected to the second-level liquid outlet pipeline through the liquid outlet branch.

[0012] Furthermore, the liquid-cooled thermal management system also includes a liquid cooling unit, the liquid outlet end of the liquid cooling unit is connected to one of the liquid inlet branches of the first-level liquid inlet pipeline, and the liquid inlet end of the liquid cooling unit is connected to one of the liquid outlet branches of the first-level liquid outlet pipeline.

[0013] Furthermore, the primary pipeline and the secondary pipeline are both wrapped with thermal insulation cotton.

[0014] In addition, the utility model also provides an energy storage device, which includes the liquid cooling thermal management system provided by the above technical solution.

[0015] Compared with the prior art, the beneficial effects of the utility model mainly include:

[0016] The utility model provides a liquid cooling thermal management system, which eliminates the tertiary pipeline and joints between the secondary pipeline and the liquid cooling plate in the prior art, and directly adopts the secondary liquid inlet pipeline and the secondary liquid outlet pipeline to connect all the liquid cooling plates in series and connect them with the primary pipeline, thereby reducing the number of pipelines and pipeline joints used, making the entire cooling pipeline structure simpler, and optimizing the loss along the pipeline system, thereby reducing the pressure drop of the entire liquid cooling thermal management system, reducing energy consumption and saving costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1It is a schematic diagram of the overall structure of the liquid cooling and heat pipe system of the utility model;

[0018] Figure 2 This is the first connection method between the secondary pipeline and the liquid cooling plate of the utility model;

[0019] Figure 3 This is the second connection method between the secondary pipeline and the liquid cooling plate of the utility model;

[0020] Figure 4 This is the third connection method between the secondary pipeline and the liquid cooling plate of the utility model.

[0021] The reference numerals in the figures are as follows:

[0022] 100, liquid cooling plate, 101, cooling liquid inlet, 102, cooling liquid outlet;

[0023] 200, cooling pipeline, 210, primary pipeline, 211, primary liquid inlet pipeline, 211a, liquid inlet branch, 212, primary liquid outlet pipeline, 212a, liquid outlet branch, 220, secondary pipeline, 220a, secondary branch pipeline, 221, secondary liquid inlet pipeline, 222, secondary liquid outlet pipeline, 223, connector, 2231, first connector, 2232, second connector, 2233, connecting pipe, 2234, clamp. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0025] like Figures 1 to 4 As shown, the utility model provides a liquid cooling thermal management system, including a liquid cooling plate 100 and a cooling pipeline 200, the liquid cooling plate 100 has a cooling liquid inlet 101 and a cooling liquid outlet 102; the cooling pipeline 200 includes a primary pipeline 210 and a secondary pipeline 220, the primary pipeline 210 has a liquid inlet branch and a liquid outlet branch, the secondary pipeline 220 includes a secondary liquid inlet pipeline 221 and a secondary liquid outlet pipeline 222, one end of the secondary liquid inlet pipeline 221 is connected to the liquid inlet branch, the other end of the secondary liquid inlet pipeline 221 is connected in series with multiple cooling liquid inlets 101, one end of the secondary liquid outlet pipeline 222 is connected to the liquid outlet branch, and the other end of the secondary liquid outlet pipeline 222 is connected in series with multiple cooling liquid outlets 102.

[0026] That is to say, the above solution of the utility model is to connect the liquid cooling plate 100 and the primary pipeline 210 in series by using the secondary liquid inlet pipeline 221 and the secondary liquid outlet pipeline 222 to form a cooling circuit, which is used to ensure the cooling effect of the energy storage device. Compared with the prior art, the solution of the utility model saves the number of pipelines and pipeline joints used, so the loss along the entire cooling pipeline system is optimized, thereby reducing the pressure drop of the entire thermal management system, reducing energy consumption, and at the same time, the structure is simpler, achieving the effect of cost reduction.

[0027] In the utility model, Figure 1 As shown, there are a plurality of liquid cooling plates 100 , and the plurality of liquid cooling plates 100 are divided into a plurality of groups, and each group of liquid cooling plates 100 includes liquid cooling plates 100 stacked at intervals.

[0028] The cooling pipeline 200 is composed of a primary pipeline 210 and a secondary pipeline 220. The primary pipeline 210 includes a primary liquid inlet pipeline 211 and a primary liquid outlet pipeline 212. The secondary pipeline 220 includes a secondary liquid inlet pipeline 221 and a secondary liquid outlet pipeline 222. The primary liquid inlet pipeline 211 has a plurality of liquid inlet branches 211a, and the primary liquid outlet pipeline 212 has a plurality of liquid outlet branches 212a. The primary liquid inlet pipeline 211 is connected to the secondary liquid inlet pipeline 221 through the liquid inlet branch 211a, and the primary liquid outlet pipeline 212 is connected to the secondary liquid outlet pipeline 222 through the liquid outlet branch 212a.

[0029] In the above passage, a plurality of liquid cooling plates 100 are connected in series in the secondary liquid inlet pipeline 221 and the secondary liquid outlet pipeline 222. Specifically:

[0030] The secondary liquid inlet pipeline 221 and the secondary liquid outlet pipeline 222 are both composed of multiple sections of secondary branch pipelines 220 a connected in series, and each section of the secondary branch pipeline 220 a is arranged between each two adjacent liquid cooling plates 100 and is connected to the cooling liquid inlet 101 and the cooling liquid outlet 102 .

[0031] Specifically, the connection modes between the secondary branch pipe 220a and the liquid cooling plate 100 include but are not limited to the following:

[0032] 1. If Figure 2 As shown, the secondary pipeline 220 also includes a connector 223, and the connector 223 includes a first connector 2231 and a second connector 2232 that are adapted to each other. The first connector 2231 is welded to the coolant inlet 101 or the coolant outlet 102, and the second connector 2232 is arranged at both ends of the secondary branch pipeline 220a. Then, the secondary branch pipeline 220a is connected to the liquid cooling plate 100 by plugging the first connector 2231 and the second connector 2232.

[0033] 2. If Figure 3 As shown, the connecting member 223 includes a connecting pipe 2233, one end of the connecting pipe 2233 is welded to the coolant inlet 101 or the coolant outlet 102, and the other end of the connecting pipe 2233 is crimped and connected to the pipe opening of the secondary branch pipeline 220a.

[0034] 3. If Figure 4 As shown, the connecting member 223 also includes a clamp 2234, and the clamp 2234 is tightly clamped at the joint between the connecting pipe 2233 and the pipe mouth of the secondary branch pipe 220a. That is to say, the connecting pipe 2233 is still welded to the coolant inlet 101 or the coolant outlet 102, and the connecting pipe 2233 is locked and connected with the secondary branch pipe 220a after being docked.

[0035] In addition, the liquid-cooled thermal management system also includes a liquid cooling unit that provides a cold source and a heat source as well as power for the circulation of the coolant for the liquid-cooled thermal management system. The liquid outlet end of the liquid cooling unit is connected to one of the liquid inlet branches 211a of the first-level liquid inlet pipeline 211, and the liquid inlet end of the liquid cooling unit is connected to one of the liquid outlet branches 212a of the first-level liquid outlet pipeline 212.

[0036] All the pipelines of the primary pipeline 210 and the secondary pipeline 220 are wrapped with thermal insulation cotton.

[0037] At the same time, the utility model also provides an energy storage device, which includes the liquid cooling thermal management system described in the above technical solution, and the primary pipeline 210 is arranged at the bottom of the energy storage device, which can make it more convenient to install and maintain the pipeline.

[0038] The specific implementation methods of the utility model described above do not constitute a limitation on the protection scope of the utility model. Any other corresponding changes and modifications made according to the technical concept of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. A liquid cooling thermal management system, characterized in that: include: A liquid cooling plate, wherein the liquid cooling plate has a cooling liquid inlet and a cooling liquid outlet; A cooling pipeline, wherein the cooling pipeline comprises a primary pipeline and a secondary pipeline, the primary pipeline has a liquid inlet branch and a liquid outlet branch, the secondary pipeline comprises a secondary liquid inlet pipeline and a secondary liquid outlet pipeline, one end of the secondary liquid inlet pipeline is connected to the liquid inlet branch, the other end of the secondary liquid inlet pipeline is connected in series with a plurality of the cooling liquid inlets, one end of the secondary liquid outlet pipeline is connected to the liquid outlet branch, and the other end of the secondary liquid outlet pipeline is connected in series with a plurality of the cooling liquid outlets.

2. The liquid cooling thermal management system according to claim 1, characterized in that: The secondary liquid inlet pipeline and the secondary liquid outlet pipeline are both composed of multiple sections of secondary branch pipelines connected in series, and each section of the secondary branch pipeline is arranged between each two adjacent liquid cooling plates and is connected to the coolant inlet and the coolant outlet.

3. The liquid cooling thermal management system according to claim 2, characterized in that: The secondary pipeline also includes a connecting piece, and two ends of the connecting piece are respectively connected to the secondary branch pipeline and the liquid cooling plate.

4. The liquid cooling thermal management system according to claim 3, characterized in that: The connecting piece includes a first joint and a second joint that are adapted to each other, the first joint is welded to the coolant inlet or the coolant outlet, the second joint is arranged at both ends of the secondary branch pipeline, and the secondary branch pipeline is connected to the liquid cooling plate through the first joint and the second joint.

5. The liquid cooling thermal management system according to claim 3, characterized in that: The connecting piece comprises a connecting pipe, one end of which is welded to the coolant inlet or the coolant outlet, and the other end of which is crimped to the pipe opening of the secondary branch pipeline.

6. The liquid cooling thermal management system according to claim 5, characterized in that: The connecting piece also includes a clamp, which is tightly clamped at the joint between the connecting pipe and the secondary branch pipeline.

7. The liquid cooling thermal management system according to claim 1, characterized in that: The primary pipeline includes a primary liquid inlet pipeline and a primary liquid outlet pipeline, the primary liquid inlet pipeline has a plurality of liquid inlet branches, the primary liquid outlet pipeline has a plurality of liquid outlet branches, the primary liquid inlet pipeline is connected with the secondary liquid inlet pipeline through the liquid inlet branch, and the primary liquid outlet pipeline is connected with the secondary liquid outlet pipeline through the liquid outlet branch.

8. The liquid cooling thermal management system according to claim 7, characterized in that: The liquid-cooled thermal management system also includes a liquid cooling unit, the liquid outlet end of the liquid cooling unit is connected to one of the liquid inlet branches of the first-level liquid inlet pipeline, and the liquid inlet end of the liquid cooling unit is connected to one of the liquid outlet branches of the first-level liquid outlet pipeline.

9. The liquid cooling thermal management system according to claim 1, characterized in that: The primary pipeline and the secondary pipeline are both wrapped with thermal insulation cotton.

10. An energy storage device, characterized in that: It comprises a liquid cooling thermal management system as claimed in any one of claims 1 to 9.

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