Thermal management system and energy storage equipment with same

Abstract

The utility model provides a thermal management system and energy storage equipment with the same, the thermal management system comprises a heat exchange device, a liquid inlet pipeline and a liquid outlet pipeline, the liquid inlet of the heat exchange device is communicated with the liquid outlet pipeline, the liquid inlet pipeline comprises a first-stage liquid inlet pipeline, a second-stage liquid inlet pipeline and a third-stage liquid inlet pipeline, the first-stage liquid inlet pipeline is communicated with a liquid outlet of the heat exchange device, a condensation pipeline is arranged on the second-stage liquid inlet pipeline, one end of the condensation pipeline is communicated with the second-stage liquid inlet pipeline, the other end of the condensation pipeline is communicated with the first-stage liquid inlet pipeline, and the condensation pipeline is arranged below a part to be subjected to heat exchange in an aligned mode; the third-stage liquid inlet pipeline communicates with the second-stage liquid inlet pipeline, and the third-stage liquid inlet pipeline communicates with the liquid outlet pipeline in the part to be subjected to heat exchange so that heat exchange can be achieved on the part to be subjected to heat exchange. The condensation pipeline is arranged at the condensation pipeline for active condensation, the humidity in the system is reduced, and therefore the condensation harm is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to power battery technical field especially, relates to a kind of heat management system and the energy storage equipment with it. BACKGROUND

[0002] With the maturity of lithium battery technology, more and more fields use lithium battery as electric energy storage device. Lithium-ion battery generates heat during charging and discharging, which increases the temperature of the battery, affects the cycle life of the battery, and if the generated heat cannot be dissipated in time, it will also lead to the occurrence of thermal runaway phenomenon.

[0003] At present, heat management system is usually installed to control the battery operating temperature environment. For example, the patent with publication number CN118322776A discloses an integrated heat management system, which receives the cold energy generated after the heat management circuit releases heat, and cools the battery in the battery liquid cooling plate, thereby effectively controlling the temperature of the battery. However, water vapor in the air is easy to condense into condensed water when it contacts the surface of an object with lower temperature. The condensed water droplets falling on the battery or electrical cable may cause corrosion of the electrical cable, and in severe cases, may cause safety accidents. SUMMARY

[0004] Therefore, the utility model provides a kind of heat management system and the energy storage equipment with it, can reduce environmental humidity, reduce dew hazard.

[0005] The technical scheme of the utility model is as follows:

[0006] The utility model provides a kind of heat management system, including heat exchange device, liquid inlet pipeline and liquid outlet pipeline, the liquid inlet of heat exchange device is communicated with the liquid outlet pipeline;

[0007] The liquid inlet pipeline includes:

[0008] Primary liquid inlet pipeline, which is communicated with the liquid outlet of the heat exchange device;

[0009] Secondary liquid inlet pipeline, which is provided with a condensation pipeline, one end of the condensation pipeline is communicated with the secondary liquid inlet pipeline, the other end of the condensation pipeline is communicated with the primary liquid inlet pipeline, and the condensation pipeline is arranged below the component to be heat exchanged.

[0010] Tertiary liquid inlet pipeline, which is communicated with the secondary liquid inlet pipeline, and the tertiary liquid inlet pipeline is communicated with the liquid outlet pipeline in the component to be heat exchanged, so as to realize heat exchange of the component to be heat exchanged.

[0011] On the basis of the above technical scheme, preferably, the condensation pipeline includes a U-shaped pipeline structure or a serpentine pipeline structure.

[0012] On the basis of the above technical scheme, preferably, the collecting box is provided with an opening, and the condensing pipeline is arranged in the collecting box.

[0013] More preferably, the collecting box is provided with a liquid discharge hole, and a liquid discharge pipe is communicated in the liquid discharge hole.

[0014] On the basis of the above technical scheme, preferably, the liquid outlet pipeline comprises:

[0015] a first liquid outlet pipeline, which is communicated with the liquid inlet of the heat exchange device;

[0016] a second liquid outlet pipeline, which is communicated on the first liquid outlet pipeline; and

[0017] a third liquid outlet pipeline, which is communicated on the second liquid outlet pipeline, and the third liquid outlet pipeline is communicated with the third liquid inlet pipeline in the heat exchange component.

[0018] More preferably, the second liquid inlet pipeline is provided with at least one, the second liquid outlet pipeline is provided with at least one, and each second liquid inlet pipeline corresponds to each second liquid outlet pipeline.

[0019] More preferably, the third liquid inlet pipeline on the second liquid inlet pipeline is provided with at least one, the third liquid outlet pipeline on the second liquid outlet pipeline is provided with at least one, and each third liquid inlet pipeline corresponds to each third liquid outlet pipeline.

[0020] On the basis of the above technical scheme, preferably, the heat exchange device comprises a liquid cooling unit or a heat exchanger.

[0021] The utility model also provides a kind of energy storage equipment, including battery pack and the heat management system described above, and the heat management system is the battery pack of heat exchange component.

[0022] On the basis of the above technical scheme, preferably, the energy storage equipment comprises a box body, and the heat management system is arranged in the box body, and the box body and the condensing pipeline are formed with inner groove or are provided with box body at the alignment position.

[0023] The heat management system and the energy storage equipment with the same have the following beneficial effects compared with the prior art:

[0024] (1) by setting condensing pipeline, realize that heat management system is condensed in the fixed position of condensing pipeline Initiative produces condensation, reduces environmental humidity, guarantees the working environment of heat exchange component, effectively prevents that condensation drops on heat exchange component and causes the occurrence of unexpected situation;

[0025] (2) Set up collecting box and drainage pipe to collect and drain out the condensed water condensed on the condensing pipeline. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced as follows. Obviously, the drawings described below are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0027] Figure 1 It is a perspective view of the heat management system of the present application;

[0028] Figure 2 It is a perspective view of another embodiment of the heat management system of the present application;

[0029] Figure 3 It is a structural schematic view of the heat management system of the present application for embodying the drainage pipe;

[0030] Figure 4 It is a perspective view of the collecting box in the heat management system of the present application;

[0031] Figure 5 It is a perspective view of the energy storage device of the present application.

[0032] Reference signs:

[0033] 1, heat exchange device;

[0034] 2, liquid inlet pipeline; 21, primary liquid inlet pipeline; 22, secondary liquid inlet pipeline; 23, tertiary liquid inlet pipeline; 24, condensing pipeline;

[0035] 3, liquid outlet pipeline; 31, primary liquid outlet pipeline; 32, secondary liquid outlet pipeline; 33, tertiary liquid outlet pipeline;

[0036] 4, collecting box; 41, drainage hole;

[0037] 5, drainage pipe; 6, box body. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present application will be described clearly and completely in combination with the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, not all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0039] AsFigure 1 As shown, the thermal management system of the present invention includes a heat exchange device 1, a liquid inlet pipeline 2 and a liquid outlet pipeline 3, wherein the liquid inlet of the heat exchange device 1 is connected to the liquid outlet pipeline 3;

[0040] The liquid inlet pipeline 2 includes:

[0041] A first-level liquid inlet pipeline 21 is connected to the liquid outlet of the heat exchange device 1;

[0042] A secondary liquid inlet pipeline 22 is provided with a condensation pipeline 24, one end of the condensation pipeline 24 is connected to the secondary liquid inlet pipeline 22, and the other end of the condensation pipeline 24 is connected to the primary liquid inlet pipeline 21, and the condensation pipeline 24 is arranged below the component to be heat exchanged; and

[0043] The tertiary liquid inlet pipeline 23 is connected to the secondary liquid inlet pipeline 22 . The tertiary liquid inlet pipeline 23 is connected to the liquid outlet pipeline 3 in the component to be heat exchanged, so as to realize heat exchange for the component to be heat exchanged.

[0044] The heat exchange medium after heat exchange in the heat exchange device 1 flows through the heat exchange device 1 to the first-level liquid inlet pipeline 21, and then flows into the component to be heat exchanged through the condensation pipeline 24, the second-level liquid inlet pipeline 22, and the third-level liquid inlet pipeline 23 in sequence. After heat exchange with the component to be heat exchanged, it flows back to the heat exchange device 1 through the liquid outlet pipeline 3, thereby realizing heat exchange with the component to be heat exchanged.

[0045] For example, taking the battery pack as an example of the component to be heat exchanged, the three-stage liquid inlet pipe 23 and the liquid outlet pipe 3 are connected in the liquid cooling plate of the battery pack. The battery pack generates heat during operation, causing the temperature of the battery pack to rise, affecting the cycle life of the battery pack. The heat exchange medium is cooled by the heat exchange device 1, and the cooled heat exchange medium is circulated to the battery pack to cool the battery pack, thereby ensuring the service life of the battery pack. It can be understood that this application only describes the battery pack as an example of the component to be heat exchanged. In actual use, the component to be heat exchanged can also be a circuit board or other components that generate heat during operation. This embodiment will not be repeated here.

[0046] The present application can significantly improve the heat dissipation function by setting up the condensation pipe 24, and at the same time has a good condensation and dehumidification function, reducing the humidity of the working environment of the battery pack and ensuring the safety and life of the battery pack.

[0047] Current thermal management systems typically wrap the outer walls of the liquid inlet line 2 and the liquid outlet line 3 with insulation to prevent condensation from dripping onto the battery pack and causing unexpected damage. However, this approach increases device cost and reduces the thermal management system's cooling effect on the battery pack. The thermal management system provided in this application eliminates the need for insulation wrapping on the liquid inlet line 2 and the liquid outlet line 3, reducing costs while ensuring the thermal management system's cooling effect on the battery pack and ensuring system energy consumption.

[0048] In addition, the first-level liquid inlet pipeline 21 of the liquid inlet pipeline 2 is the main liquid inlet pipeline, the second-level liquid inlet pipeline 22 connects the first-level liquid inlet pipeline 21 and the third-level liquid inlet pipeline 23, and the third-level liquid inlet pipeline 23 is a branch pipeline used to cooperate with the battery pack. Therefore, the condensation pipeline 24 is connected to the second-level liquid inlet pipeline 22, which can ensure the temperature of the heat exchange medium in the condensation pipeline 24 and facilitate the layout of the condensation pipeline 24.

[0049] Condensation pipe 24 is positioned below the component to be heat exchanged, that is, below the battery pack. When the thermal management system is operating, the bottom temperature of the battery pack's liquid cooling plate is low, which easily forms low-temperature gas. The low-temperature gas sinks and condenses on condensation pipe 24 to form condensation, enabling the thermal management system to actively condense in condensation pipe 24, achieving the effect of active condensation in a fixed position.

[0050] Reference Figure 1 and Figure 2 The condensing pipe 24 includes a U-shaped pipe structure or a serpentine pipe structure. Through this structural setting, the length of the condensing pipe 24 can be increased within a unit area, thereby providing a larger cooling area and ensuring condensation efficiency.

[0051] In some embodiments, the heat exchange device 1 includes a liquid cooling unit or a heat exchanger to achieve heat exchange of the heat exchange medium circulating in the thermal management system. Of course, the heat exchange medium can be a refrigerant, cooling water, or cooling oil, etc., which can be adaptively selected according to the application requirements of different application scenarios.

[0052] Reference Figure 1 and Figure 2The liquid outlet pipeline 3 includes a primary liquid outlet pipeline 31, a secondary liquid outlet pipeline 32, and a tertiary liquid outlet pipeline 33. The primary liquid outlet pipeline 31 is connected to the liquid inlet of the heat exchange device 1; the secondary liquid outlet pipeline 32 is connected to the primary liquid outlet pipeline 31; and the tertiary liquid outlet pipeline 33 is connected to the secondary liquid outlet pipeline 32. The tertiary liquid outlet pipeline 33 is connected to the tertiary liquid inlet pipeline 23 within the component to be heat exchanged. By configuring the liquid outlet pipeline 3 in this manner, it can match the configuration of the liquid inlet pipeline 2, facilitating the structural arrangement of the liquid inlet pipeline 2 and the liquid outlet pipeline 3 on the battery pack.

[0053] The first liquid inlet line 2 can be arranged to extend horizontally, the second liquid inlet line 22 can be arranged to extend vertically, and the third liquid inlet line 23 can be extended horizontally. Correspondingly, the first liquid outlet line 31 is arranged parallel to the first liquid outlet line, the second liquid outlet line 32 is arranged parallel to the second liquid inlet line 22, and the third liquid outlet line 33 is arranged opposite to the third liquid inlet line 23, and is located on the side close to the second liquid outlet line 32 and the second liquid inlet line 22. In this way, the third liquid inlet line 23 and the third liquid outlet line 33 are both connected to the battery pack, thereby achieving cooling inside the battery pack. Specifically, the third liquid inlet line 23 and the third liquid outlet line 33 are connected within the liquid cooling plate of the battery pack.

[0054] At least one secondary liquid inlet pipeline 22 is provided, and at least one secondary liquid outlet pipeline 32 is provided, and each secondary liquid inlet pipeline 22 corresponds to each secondary liquid outlet pipeline 32 one by one; by setting up multiple secondary liquid outlet pipelines 32 and multiple secondary liquid inlet pipelines 22, multiple battery packs can be matched and aligned, so that one heat exchange device 1 can perform heat exchange on multiple battery packs at the same time.

[0055] Of course, there is at least one tertiary liquid inlet pipeline 23 on the secondary liquid inlet pipeline 22, and at least one tertiary liquid outlet pipeline 33 on the secondary liquid outlet pipeline 32, and each tertiary liquid inlet pipeline 23 and each tertiary liquid outlet pipeline 33 correspond one to one; through the setting of multiple tertiary liquid inlet pipelines 23 and multiple tertiary liquid outlet pipelines 33, multiple battery packs can also be matched to realize the setting of simultaneous heat exchange of multiple battery packs.

[0056] It can be seen from this that the thermal management system provided in this application can adaptively select the number of secondary liquid inlet pipes 22, secondary liquid outlet pipes 32, and the number of tertiary liquid inlet pipes 23 and tertiary liquid outlet pipes 33 according to different stacking forms of battery packs.

[0057] Reference Figures 2 to 4The thermal management system also includes a collection box 4, which has an opening, and the condensation pipe 24 is arranged in the collection box 4; through the setting of the collection box 4, the condensation generated by condensation on the condensation pipe 24 drips into the collection box 4, thereby realizing the collection of condensed water.

[0058] The collection box 4 is provided with a drainage hole 41, which is connected to a drainage pipe 5. The drainage pipe 5 can drain the condensed water in the collection box 4 to the outside, thereby preventing the collection box 4 from overflowing due to the accumulation of condensed water. Optionally, the drainage hole 41 is provided at the bottom of the collection box 4, thereby further ensuring the drainage of condensed water.

[0059] Optionally, the collecting box 4 is arranged at an angle, and the opposite sides of the collecting box 4 are respectively a high part and a low part, and the drainage hole 41 is opened on one side of the low part of the collecting box 4. The condensed water in the collecting box 4 will flow from the high part of the collecting box 4 to the low part of the collecting box 4 under the action of gravity, thereby further ensuring that the condensed water in the collecting box 4 is discharged outward through the drainage hole 41.

[0060] Reference Figures 1 to 4 In summary, the thermal management system provided in the embodiment of the present application, by disposing the condensing line 24 on the secondary liquid inlet line 22 and connecting the primary liquid inlet line 21 and the secondary liquid inlet line 22, allows the temperature of the heat exchange medium in the condensing line 24 to be lower than the temperature of the heat exchange medium in the secondary liquid inlet line 22, the tertiary liquid inlet line 23, the battery pack's liquid cooling plate, and the liquid outlet line 3 during battery pack operation. In other words, the temperature of the heat exchange medium in the condensing line 24 is only slightly higher than the temperature of the heat exchange medium in the liquid inlet line 2. Based on this, when the thermal management system is in operation, active condensation can be achieved in the condensing line 24 to produce condensation, which drips into the collection box 4 and can then be discharged to the outside through the drain pipe 5.

[0061] Because this thermal management system can actively condense, it does not require additional circuitry or a dehumidifier when in use. This can reduce the number of components in the system, lower costs, and reduce the space occupied by the system when in use. By providing a condensation line 24 at the bottom of the thermal management system to actively condense, the safety risks associated with the thermal management system not requiring condensation are also reduced.

[0062] like Figure 5 As shown, the present invention also provides an energy storage device, including a battery pack and the above-mentioned thermal management system, wherein the component to be heat exchanged of the thermal management system is the battery pack.

[0063] Reference Figures 1 to 5The energy storage device includes a box body 6, and the thermal management system is arranged in the box body 6. An inner groove is formed or a box body is provided at the position where the box body 6 and the condensation pipe 24 are aligned; the condensed water generated by the active condensation of the condensation pipe 24 is collected by the inner groove or the box body. It can be known that when a box body is provided on the box body 6, the box body in the box body 6 is the collection box 4 in the thermal management system.

[0064] It should be noted that the energy storage equipment in this embodiment includes but is not limited to containerized battery systems, home energy storage systems, and outdoor energy storage systems.

[0065] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A thermal management system, characterized in that: It comprises a heat exchange device (1), a liquid inlet pipeline (2) and a liquid outlet pipeline (3), wherein the liquid inlet of the heat exchange device (1) is connected to the liquid outlet pipeline (3); The liquid inlet pipeline (2) comprises: a first-level liquid inlet pipeline (21) connected to the liquid outlet of the heat exchange device (1); A secondary liquid inlet pipeline (22) is provided with a condensation pipeline (24), one end of the condensation pipeline (24) is connected to the secondary liquid inlet pipeline (22), and the other end of the condensation pipeline (24) is connected to the primary liquid inlet pipeline (21), and the condensation pipeline (24) is arranged below the component to be heat exchanged; and The tertiary liquid inlet pipeline (23) is connected to the secondary liquid inlet pipeline (22), and the tertiary liquid inlet pipeline (23) is connected to the liquid outlet pipeline (3) in the component to be heat exchanged to achieve heat exchange for the component to be heat exchanged.

2. The thermal management system according to claim 1, wherein: The condensation pipeline (24) comprises a U-shaped pipeline structure or a serpentine pipeline structure.

3. The thermal management system according to claim 1 or 2, wherein: It also includes a collection box (4), the collection box (4) is provided with an opening, and the condensation pipeline (24) is arranged in the collection box (4).

4. The thermal management system according to claim 3, wherein: The collecting box (4) is provided with a drainage hole (41), and the drainage hole (41) is connected to a drainage pipe (5).

5. The thermal management system according to claim 1, wherein: The liquid outlet pipeline (3) comprises: a first-level liquid outlet pipeline (31) connected to the liquid inlet of the heat exchange device (1); a secondary liquid outlet pipeline (32) connected to the primary liquid outlet pipeline (31); and The tertiary liquid outlet pipeline (33) is connected to the secondary liquid outlet pipeline (32), and the tertiary liquid outlet pipeline (33) is connected to the tertiary liquid inlet pipeline (23) in the heat exchange component.

6. The thermal management system according to claim 5, wherein: At least one secondary liquid inlet pipeline (22) is provided, and at least one secondary liquid outlet pipeline (32) is provided, and each of the secondary liquid inlet pipelines (22) corresponds to each of the secondary liquid outlet pipelines (32) on a one-to-one basis.

7. The thermal management system according to claim 5 or 6, wherein: At least one tertiary liquid inlet pipeline (23) is provided on the secondary liquid inlet pipeline (22), and at least one tertiary liquid outlet pipeline (33) is provided on the secondary liquid outlet pipeline (32), and each tertiary liquid inlet pipeline (23) corresponds to each tertiary liquid outlet pipeline (33).

8. The thermal management system according to claim 1, wherein: The heat exchange device (1) comprises a liquid cooling unit or a heat exchanger.

9. An energy storage device, characterized in that: The thermal management system comprises a battery pack and any one of claims 1 to 8, wherein the component to be heat exchanged of the thermal management system is the battery pack.

10. The energy storage device according to claim 9, wherein: The energy storage device comprises a box (6), the thermal management system is arranged in the box (6), and an inner groove is formed or a box body is provided at a position where the box (6) and the condensation pipeline (24) are aligned.

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