A liquid cooling heat dissipation assembly of an energy storage battery cluster

Abstract

The utility model discloses a kind of liquid cooling heat dissipation components of energy storage battery cluster, including water inlet pipe, water outlet pipe and liquid cooling heat sink, liquid cooling heat sink is used to carry out heat exchange with battery module, one end of water outlet pipe is connected with liquid cooling heat sink, and the other end is externally connected with water chiller;Water inlet pipe includes two-stage pipeline and three-stage pipeline, two-stage pipeline is externally connected with water chiller, two-way stop valve is equipped at the junction of two-stage pipeline and three-stage pipeline, water inlet connector is equipped on liquid cooling heat sink, one end of three-stage pipeline away from two-stage pipeline is connected with water inlet connector, throttling pipe detachably on water inlet connector, the outer side wall of throttling pipe and the inner side wall of water inlet connector sealing abutment.The utility model can make the heat dissipation of each battery module uniform, to ensure the temperature consistency of each battery module, reduce the manufacturing cost of equipment;On the other hand, install two-way stop valve, can reduce the difficulty of maintenance, to save the time and cost of maintenance.

Description

Technical Field

[0001] This utility model relates to the field of battery heat dissipation device technology, specifically to a liquid cooling heat dissipation component for an energy storage battery cluster. Background Technology

[0002] Liquid cooling technology is widely used in energy storage systems to manage the heat of battery modules, especially in lithium-ion battery packs. Batteries generate a significant amount of heat during charging and discharging. If this heat is not effectively dissipated, it can lead to uneven temperature distribution, affecting battery performance and lifespan, and even causing safety issues such as thermal runaway or fires. Liquid cooling systems transfer heat to external heat sinks by circulating coolant (such as water or other cooling media) around the battery modules, achieving efficient thermal management. Existing liquid cooling systems typically include components such as cooling pipes, heat sinks, and chillers. Since each battery module is at a different distance from the chiller, if cooling pipes of the same diameter are used, battery modules closer to the chiller will receive more coolant, resulting in significantly better heat dissipation than those further away. This leads to uneven temperature distribution across the entire battery cluster. Therefore, it is necessary to control the coolant flow rate to each battery module to be as consistent as possible to ensure uniform heat dissipation.

[0003] To ensure consistent flow rate in the liquid cooling system, a common practice is to install T-joints with different orifice diameters at the junctions of the secondary and tertiary pipes corresponding to each battery module. Specifically, the T-joints installed in battery modules closer to the chiller have smaller orifice diameters for the tertiary pipes, while those installed in battery modules farther from the chiller have larger orifice diameters for the tertiary pipes, thus ensuring a consistent coolant flow rate across all battery modules. This structural design has the following problems:

[0004] 1. Tee fittings are molded parts. Different pipe diameters require different mold designs, which incurs significant costs.

[0005] 2. If the energy storage pipeline system adopts a three-way connector design, a two-way shut-off valve cannot be installed at the connection between the secondary and tertiary pipelines. The system cannot be hot-swapped for maintenance, and all the coolant in the cooling system must be drained before each battery pack can be removed for maintenance, making maintenance difficult and costly. Utility Model Content

[0006] To address some or all of the problems existing in the prior art, this utility model provides a liquid cooling heat dissipation component for an energy storage battery cluster, including an inlet pipe, an outlet pipe, and a liquid cooling heat dissipation plate. The liquid cooling heat dissipation plate is connected to the battery module for heat exchange. One end of the outlet pipe is connected to the liquid cooling heat dissipation plate, and the other end is connected to a chiller. The inlet pipe includes a secondary pipe and a tertiary pipe. The secondary pipe is connected to the chiller, and the tertiary pipe is connected to the secondary pipe. A two-way shut-off valve is provided at the connection between the secondary and tertiary pipes. The liquid cooling heat dissipation plate is provided with an inlet connector. The end of the tertiary pipe away from the secondary pipe is sleeved around the inlet connector and connected to the inlet connector. A detachable throttling tube is provided on the inlet connector, and the outer wall of the throttling tube is sealed against the inner wall of the inlet connector.

[0007] As a further improvement of this utility model, the throttling tube has a hollow tubular structure, and an annular boss is provided on the outer side wall of the throttling tube. The throttling tube is inserted into the water inlet connector, and the annular boss abuts against the end face of the water inlet connector.

[0008] As a further improvement of this utility model, the three-stage pipeline is connected to the water inlet connector via a quick-connect fitting.

[0009] As a further improvement of this utility model, the liquid cooling heat sink is provided with a fluid channel, the liquid cooling heat sink is provided with a water outlet connector, the fluid channel is connected to the water inlet connector and the water outlet connector respectively, and the water outlet pipe is connected to the water outlet connector.

[0010] As a further improvement of this utility model, the water outlet pipe is connected to the water outlet connector via a quick-connect fitting.

[0011] As a further improvement of this utility model, there are eight liquid cooling heat dissipation plates and eight three-stage pipelines, and the two are arranged in a one-to-one correspondence.

[0012] As a further improvement of this utility model, eight tertiary pipelines are distributed at equal intervals on the secondary pipeline.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This invention eliminates the need for a T-joint, reducing equipment manufacturing costs. A detachable throttling pipe within the inlet connector controls the coolant flow into the liquid-cooled heat sink, and the throttling pipe is detachably connected to the inlet connector. In practice, the smaller-diameter throttling pipe is installed in the inlet connector closer to the chiller, while the larger-diameter throttling pipe is installed in the inlet connector farther from the chiller. This ensures a uniform coolant flow from each tertiary pipe to the liquid-cooled heat sink, resulting in even heat dissipation for each battery module and consistent temperature across all modules. Furthermore, the invention incorporates a two-way shut-off valve at the connection between the secondary and tertiary pipes. This valve can be closed when maintenance is required on a specific battery pack, eliminating the need to wait for all coolant in the cooling system to drain, thus reducing maintenance difficulty and saving time and costs. Attached Figure Description

[0015] To more clearly illustrate the solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this utility model;

[0017] Figure 2 This is a schematic diagram of the installation structure of the three-stage pipeline and the water inlet connector in an embodiment of this utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the liquid-cooled heat sink in an embodiment of this utility model;

[0019] Figure 4 This is a schematic diagram of the throttling tube in an embodiment of this utility model. Detailed Implementation

[0020] Unless otherwise defined, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used in the specification is for the purpose of describing particular embodiments only and is not intended to limit the invention; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and accompanying drawings of this invention are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or accompanying drawings of this invention are used to distinguish different objects, not to describe a particular order.

[0021] In this invention, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this invention. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment to other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this invention can be combined with other embodiments.

[0022] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0023] like Figure 1-4 As shown, a liquid cooling heat dissipation component for an energy storage battery cluster includes an inlet pipe 1, an outlet pipe 2, and a liquid cooling heat dissipation plate 3. The liquid cooling heat dissipation plate 3 is connected to the battery module 4 for heat exchange, thereby achieving the purpose of cooling the battery module 4. The liquid cooling heat dissipation plate 3 has a fluid channel 31 and an inlet connector 32 and an outlet connector 33. One end of the outlet pipe 2 is connected to the outlet connector 33 via a quick-connect connector 5, and the other end is connected to a chiller. One end of the inlet pipe 1 is connected to the inlet connector 32 via a quick-connect connector 5, and the other end is connected to a chiller. During operation, the chiller outputs coolant to the inlet pipe 1, then the coolant flows through the inlet connector 32 into the liquid cooling heat dissipation plate 3, then into the fluid channel 31 to exchange heat with the battery module 4, carrying away the heat from the battery module 4. The coolant then flows through the outlet connector 33 back into the outlet pipe 2, and finally back into the chiller, achieving the purpose of liquid cooling heat dissipation for the battery module 4.

[0024] The water inlet pipe 1 includes a secondary pipe 11 and multiple tertiary pipes 12. One end of the secondary pipe 11 is connected to a chiller, and one end of the tertiary pipe 12 is connected to the secondary pipe 11, while the other end is fitted around the water inlet connector 32 and connected to it. A two-way shut-off valve 6 is provided at the connection between the tertiary pipe 12 and the secondary pipe 11. The two-way shut-off valve 6 can be used to individually close the corresponding tertiary pipe 12, thereby facilitating the maintenance of a specific battery module 4. A throttling pipe 7 is detachably installed on the water inlet connector 32, and the outer wall of the throttling pipe 7 is in sealing contact with the inner wall of the water inlet connector 32. By installing the throttling pipe 7 inside the water inlet connector 32, the flow rate of the fluid flowing from the tertiary pipe 12 into the water inlet connector 32 can be changed, thereby controlling the flow rate of the coolant flowing into the liquid cooling heat sink 3.

[0025] In the specific implementation process, the throttling pipe 7 with a smaller inner diameter can be installed in the water inlet connector 32 that is closer to the chiller, and the throttling pipe 7 with a larger inner diameter can be installed in the water inlet connector 32 that is farther away from the chiller. This ensures that the flow rate of coolant from each of the three-stage pipes 12 to the liquid cooling heat sink 3 is the same, so that the heat dissipation of each battery module 4 is uniform, thereby ensuring the temperature consistency of each battery module 4.

[0026] In other embodiments, the throttling pipe 7 can also be installed on the tertiary pipe 12 or the water outlet connector 33. Its specific control principle is the same as that in this embodiment, which can also control the flow rate of coolant flowing into each liquid cooling heat sink 3.

[0027] In this embodiment, there are eight liquid cooling heat sinks 3 and eight tertiary pipes 12, and they correspond one-to-one. The eight tertiary pipes 12 are evenly distributed on the secondary pipes 11. In other embodiments, depending on the number of battery modules 4, any number of other tertiary pipes 12 and liquid cooling heat sinks 3 can be provided, and this utility model does not limit this.

[0028] In this embodiment, the throttling tube 7 is a hollow tubular structure, and an annular boss 71 is provided on the outer side wall of the throttling tube 7. When installing the throttling tube 7, one end of the throttling tube 7 is inserted into the water inlet connector 32 until the annular boss 71 abuts against the end face of the water inlet connector 32. After the throttling tube 7 is installed, the outer side wall of the throttling tube 7 is sealed against the inner side wall of the water inlet connector 32. The annular boss 71 limits the installation position of the throttling tube 7, thereby ensuring that the throttling tube 7 can be installed and fixed on the water inlet connector 32; it also facilitates the removal of the throttling tube 7 from the water inlet connector 32.

[0029] In this embodiment, the tertiary pipeline 12 is connected to the water inlet connector 32 via a quick-connect fitting 5. The quick-connect fitting 5 can adopt an existing structure, and its specific structure will not be described in detail here. By installing quick-connect fittings 5 ​​on the water outlet pipe 2 and the tertiary pipeline 12 respectively, the assembly efficiency of the liquid cooling heat dissipation components of the energy storage battery cluster can be improved.

[0030] The liquid cooling heat dissipation component of this energy storage battery cluster controls the flow rate of coolant into the liquid cooling heat dissipation plate 3 by installing throttling pipes 7 with different inner diameters inside the water inlet connector 32. This ensures that the flow rate of coolant into each liquid cooling heat dissipation plate 3 is consistent, resulting in uniform heat dissipation for each battery module 4 and guaranteeing temperature consistency for each battery module 4. Furthermore, a two-way shut-off valve 6 is installed at the connection between the secondary pipeline 11 and the tertiary pipeline 12, reducing the maintenance difficulty of the corresponding battery module 4 and saving maintenance time and costs.

[0031] The above-described specific embodiments are preferred embodiments of this utility model, and are not intended to limit the specific scope of this utility model. The scope of this utility model includes but is not limited to the specific embodiments described above. All equivalent changes made in accordance with this utility model are within the protection scope of this utility model.

Claims

1. A liquid-cooled heat dissipation component for an energy storage battery cluster, characterized in that: It includes an inlet pipe, an outlet pipe, and a liquid cooling heat sink. The liquid cooling heat sink is connected to the battery module for heat exchange with the battery module. One end of the outlet pipe is connected to the liquid cooling heat sink, and the other end is connected to an external chiller. The water inlet pipe includes a secondary pipe and a tertiary pipe. The secondary pipe is connected to a chiller, and the tertiary pipe is connected to the secondary pipe. A two-way shut-off valve is provided at the connection between the secondary and tertiary pipes. A water inlet connector is provided on the liquid cooling heat dissipation plate. The end of the tertiary pipe away from the secondary pipe is sleeved around the water inlet connector and is connected to the water inlet connector. A detachable throttling tube is provided on the water inlet connector, and the outer wall of the throttling tube is sealed against the inner wall of the water inlet connector.

2. The liquid cooling heat dissipation component for the energy storage battery cluster according to claim 1, characterized in that: The throttling tube is a hollow tubular structure, and an annular boss is provided on the outer side wall of the throttling tube. The throttling tube is inserted into the water inlet connector, and the annular boss abuts against the end face of the water inlet connector.

3. The liquid cooling heat dissipation component for the energy storage battery cluster according to claim 1, characterized in that: The three-stage pipeline is connected to the water inlet connector via a quick-connect fitting.

4. The liquid cooling heat dissipation component for the energy storage battery cluster according to claim 1, characterized in that: The liquid cooling heat sink is provided with a fluid channel and a water outlet connector. The fluid channel is connected to the water inlet connector and the water outlet connector respectively, and the water outlet pipe is connected to the water outlet connector.

5. The liquid cooling heat dissipation component for the energy storage battery cluster according to claim 4, characterized in that: The water outlet pipe is connected to the water outlet connector via a quick-connect fitting.

6. The liquid-cooled heat dissipation assembly for the energy storage battery cluster according to any one of claims 1-5, characterized in that: There are eight liquid cooling heat sinks and eight tertiary pipelines, and they are set up in a one-to-one correspondence.

7. The liquid cooling heat dissipation component for the energy storage battery cluster according to claim 6, characterized in that: Eight tertiary pipelines are distributed at equal intervals on the secondary pipeline.

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