CN221057519U - Liquid cooling pipeline of energy storage system - Google Patents

Abstract

The utility model provides a liquid cooling pipeline of an energy storage system, which comprises a liquid inlet pipe, a split pipe, a plurality of flow-through pipe groups and a liquid outlet pipe, wherein the split pipe is arranged at the liquid outlet end of the liquid inlet pipe, the split pipe is provided with a plurality of split cavities with equal volumes communicated with the liquid inlet pipe, one end of the split pipe, which is far away from the liquid inlet pipe, is provided with a liquid outlet channel communicated with the split cavities, each flow-through pipe group is provided with a liquid outlet pipe section, a liquid return pipe section and a bridge pipe section arranged between the liquid outlet pipe section and the liquid return pipe section, the bridge pipe sections are communicated with the liquid outlet pipe section and the liquid return pipe section, the first ends of the flow-through pipe groups are communicated with the liquid outlet channel, and the second ends of the flow-through pipe groups are communicated with the liquid outlet pipe. The liquid cooling pipeline of the energy storage system can solve the problem that cooling liquid in the liquid cooling system in the prior art is unevenly distributed in each pipeline to cause temperature reduction temperature difference of a plurality of battery packs.

Description

Liquid cooling pipeline of energy storage system

Technical Field

The utility model relates to the technical field of related structures of batteries, in particular to a liquid cooling pipeline of an energy storage system.

Background

At present, the increasingly high charge and discharge requirements enable the energy storage industry to control the temperature of a battery more strictly, and the liquid cooling technology with higher heat exchange efficiency is gradually combined with air cooling, so that the energy storage electric heating management technology becomes another important development direction.

In the prior related liquid cooling technology, a liquid cooling plate is adopted to exchange heat for the battery pack, the pipeline design is mainly an out-of-range pipeline, cooling liquid is led into the liquid cooling pipe through the water inlet pipeline, then enters the primary branch and then enters the secondary branch, and then enters the liquid cooling plate of the battery pack from the secondary branch to cool the battery.

However, the problem of too many branch pipelines exists in the multistage liquid cooling pipeline, when the upper pipeline conveys the cooling liquid to the lower pipeline, the situation of uneven flow distribution of a plurality of lower pipelines always exists, the situation of uneven flow distribution of each stage of branch pipeline can aggravate one minute, uneven flow distribution can cause deviation of the flow of the cooling liquid entering each liquid cooling plate, the temperature of battery packs is different, the temperature difference between the battery packs is increased, and the temperature difference between the battery packs is further increased due to the fact that a plurality of pipelines in the same battery cabinet are connected in series, the total inlet temperature and the total outlet temperature of the cooling liquid of the same battery cabinet are different, the temperature difference between the battery packs is further increased, and the service life of the battery packs is influenced by the large temperature difference.

As described above, the cooling liquid in the conventional liquid cooling system has a problem that the cooling temperature difference occurs in a plurality of battery packs due to uneven distribution in each pipe.

Disclosure of utility model

The utility model mainly aims to provide a liquid cooling pipeline of an energy storage system, which is used for solving the problem that cooling liquid in the liquid cooling system in the prior art is unevenly distributed in each pipeline to cause temperature reduction temperature difference of a plurality of battery packs.

In order to achieve the above object, according to one aspect of the present utility model, there is provided an energy storage system liquid cooling line including a liquid inlet pipe; the shunt tube is arranged at the liquid outlet end of the liquid inlet tube, the shunt tube is provided with a plurality of shunt cavities with equal volumes communicated with the liquid inlet tube, and one end of the shunt tube, which is far away from the liquid inlet tube, is provided with a liquid outlet channel communicated with the shunt cavities; the first ends of the overflow pipe groups are communicated with the liquid outlet channel, and each overflow pipe group is provided with a liquid outlet pipe section, a liquid return pipe section and a bridge pipe section arranged between the liquid outlet pipe section and the liquid return pipe section; and the second ends of the plurality of overflow pipe groups are communicated with the liquid outlet pipe.

Further, the bridge pipe section, the liquid outlet pipe section and the liquid return pipe section are matched to form liquid supply pipe groups, each flow passage group comprises a first flow passage pipe, and the first flow passage pipe is communicated with the liquid outlet channel; and one end of the second overflow pipe is communicated with the first overflow pipe, the other end of the second overflow pipe is communicated with the liquid outlet pipe, and a plurality of liquid supply pipe groups are arranged on the second overflow pipe along the extending direction of the second overflow pipe.

Further, the second plurality of flow tubes of the plurality of flow tube sets are coplanar.

Further, the second overflow pipe comprises a plurality of communication pipe sections, and the liquid outlet pipe section is communicated with the first overflow pipe through the communication pipe sections; the liquid outlet pipe section and the liquid return pipe section between two adjacent liquid supply pipe sections are communicated through a communicating pipe section.

Further, the communicating pipe section and the bridge pipe section extend along the axial direction of the liquid inlet pipe, and the liquid outlet pipe section and the liquid return pipe section extend along the radial direction of the liquid inlet pipe; and/or the pipe diameter of the bridge pipe section is smaller than the pipe diameters of the liquid outlet pipe section and the liquid return pipe section.

Further, the overflow pipe group further comprises a first valve body, and the first valve body is arranged on the bridge pipe section; the liquid return pipe section is provided with a liquid return port, the second valve body is arranged at the liquid return port, and the second valve body is a one-way valve.

Further, the shunt tube comprises a tube body, one end of the tube body is communicated with the liquid inlet tube, and the other end of the tube body is provided with a liquid outlet channel extending towards the direction far away from the liquid inlet tube; the splitter blade is arranged in the pipe body and matched with the pipe body to form a plurality of splitter cavities.

Further, the flow dividing piece comprises a cylindrical first flow dividing structure and a plurality of second flow dividing structures arranged between the outer wall surface of the first flow dividing structure and the inner wall surface of the pipe body, and the second flow dividing structures are arranged at intervals along the circumferential direction of the first flow dividing structure.

Further, the first and second shunt structures have equal lengths along the axial direction of the shunt tube.

Further, along the axial of shunt tubes, the first end of body is open structure and with feed liquor pipe intercommunication, and the second end of body has baffle structure and the arch of shaping on baffle structure, extends towards the one side of keeping away from the feed liquor pipe along the axial arch of shunt tubes, has the drain channel on the arch.

By applying the technical scheme of the utility model, the liquid cooling pipeline of the energy storage system comprises a liquid inlet pipe, a split pipe, a plurality of overflow pipe groups and a liquid outlet pipe, wherein the split pipe is arranged at the liquid outlet end of the liquid inlet pipe, the split pipe is provided with a plurality of split cavities with equal volumes communicated with the liquid inlet pipe, one end of the split pipe far away from the liquid inlet pipe is provided with a liquid outlet channel communicated with the split cavities, each overflow pipe group is provided with a liquid outlet pipe section, a liquid return pipe section and a bridge pipe section arranged between the liquid outlet pipe section and the liquid return pipe section, the bridge pipe section is communicated with the liquid outlet pipe section and the liquid return pipe section, the first ends of the overflow pipe groups are communicated with the liquid outlet channel, and the second ends of the overflow pipe groups are communicated with the liquid outlet pipe.

As can be seen from the above, when the liquid in the liquid cooling pipeline of the energy storage system flows through the shunt pipe, the liquid flows into the shunt pipe group through different shunt cavities respectively, so that the technical effect of liquid separation is achieved; meanwhile, the arrangement of the plurality of overcurrent tube groups is beneficial to being communicated with the liquid cooling plates in the plurality of battery packs, so that the plurality of battery packs are synchronously cooled, and the cooling temperatures of the plurality of battery packs are guaranteed to be the same; meanwhile, on the overcurrent tube group serving as a branch pipeline, the overcurrent tube group is connected in parallel with each battery pack through the liquid outlet tube section, the liquid return tube section and the bridge tube section arranged between the liquid outlet tube section and the liquid return tube section, so that the problems that the flow in each battery pack is uneven and the temperature difference of cooling liquid flowing into each battery pack is large due to the serial connection in the prior art are avoided.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

FIG. 1 is a schematic diagram showing the overall structure of the liquid cooling pipeline of the energy storage system of the present utility model;

FIG. 2 shows a schematic structural diagram of a second flow-through tube of the present utility model;

Fig. 3 shows a schematic perspective view of a shunt of the present utility model;

Fig. 4 shows a side view of the shunt of the present utility model;

fig. 5 shows another side view of the shunt of the present utility model;

FIG. 6 is a schematic diagram showing a perspective view of the liquid cooling circuit of the energy storage system in combination with a battery pack according to the present utility model;

fig. 7 shows another schematic perspective view of the liquid cooling pipeline of the energy storage system matched with the battery pack.

Wherein the above figures include the following reference numerals:

10. A liquid inlet pipe; 20. a shunt; 201. a shunt cavity; 210. a tube body; 220. a diverter blade; 221. a first shunt structure; 222. a second shunt structure; 230. a protrusion; 231. a liquid outlet channel; 240. a baffle structure; 30. a overcurrent tube group; 310. a first overflow pipe; 320. a second overflow pipe; 321. a communicating tube section; 322. a liquid outlet pipe section; 323. a bridge pipe section; 324. a liquid return pipe section; 325. a first valve body; 40. a liquid outlet pipe; 50. a liquid exchange port; 510. a liquid outlet; 520. a liquid return port; 60. a connecting piece; 70. and a second valve body.

Detailed Description

It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other. The utility model will be described in detail below with reference to the drawings in connection with embodiments.

It is noted that all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs unless otherwise indicated.

In the present utility model, unless otherwise indicated, terms of orientation such as "upper, lower, top, bottom" are used generally with respect to the orientation shown in the drawings or with respect to the component itself in the vertical, upright or gravitational direction; also, for ease of understanding and description, "inner and outer" refers to inner and outer relative to the profile of each component itself, but the above-mentioned orientation terms are not intended to limit the present utility model.

In order to solve the problem that the cooling liquid in the liquid cooling system in the prior art is unevenly distributed in each pipeline to cause a plurality of battery packs to have cooling temperature difference, the embodiment provides an energy storage system liquid cooling pipeline, and the energy storage system liquid cooling pipeline is used for supplying liquid to the liquid cooling plate in the inside of battery packs, and the cooling liquid with the same flow is provided in order to realize the same temperature to the cooling of a plurality of battery packs through the inside of a plurality of battery packs.

As shown in fig. 1 to 7, the liquid cooling pipeline of the energy storage system comprises a liquid inlet pipe 10, a split pipe 20, a plurality of flow-through pipe groups 30 and a liquid outlet pipe 40, wherein the split pipe 20 is arranged at the liquid outlet end of the liquid inlet pipe 10, the split pipe 20 is provided with a plurality of split cavities 201 communicated with the liquid inlet pipe 10, one end of the split pipe 20 far away from the liquid inlet pipe 10 is provided with a liquid outlet channel 231 communicated with the split cavities 201, each flow-through pipe group 30 is provided with a liquid outlet pipe section 322, a liquid return pipe section 324 and a bridge pipe section 323 arranged between the liquid outlet pipe section 322 and the liquid return pipe section 324, the bridge pipe section 323 is communicated with the liquid outlet pipe section 322 and the liquid return pipe section 324, the first ends of the flow-through pipe groups 30 are communicated with the liquid outlet channel 231, and the second ends of the flow-through pipe groups 30 are communicated with the liquid outlet pipe 40.

The liquid outlet pipe section 322 is provided with a liquid outlet 510, the liquid return pipe section 324 is provided with a liquid return port 520, and the liquid outlet 510 and the liquid return port 520 are matched to form a liquid exchange port 50 matched with a liquid cooling plate in the battery pack.

Specifically, when the liquid in the liquid cooling pipeline of the energy storage system of the embodiment flows through the shunt tube 20, the liquid flows into the interior of the flow passing tube group 30 through different shunt cavities 201 respectively, so as to achieve the technical effect of liquid separation, and in the application, the plurality of shunt cavities 201 are arranged in the shunt tube 20, so that the liquid fills the plurality of shunt cavities 201 first, which is beneficial to guaranteeing the equal flow of the liquid in each flow passing tube group 30; meanwhile, the arrangement of the plurality of overcurrent tube groups 30 is beneficial to being communicated with the liquid cooling plates in the plurality of battery packs, so that the plurality of battery packs are synchronously cooled, and the cooling temperatures of the plurality of battery packs are guaranteed to be the same; meanwhile, on the overflow pipe set 30 serving as a branch pipeline, the overflow pipe set 30 is connected in parallel with each battery pack through the liquid outlet pipe section 322, the liquid return pipe section 324 and the bridge pipe section 323 arranged between the liquid outlet pipe section 322 and the liquid return pipe section 324, so that the problems that the flow in each battery pack is uneven and the temperature difference of cooling liquid flowing into each battery pack is large due to the serial liquid cooling pipeline in the prior art are avoided. Further, a plurality of liquid exchange ports 50 are arranged on each flow-through pipe group 30, and the plurality of liquid exchange ports 50 correspond to the liquid cooling plates of a plurality of battery packs, so that the liquid cooling and the temperature reduction of the plurality of battery packs are realized.

Further, the liquid outlet 510 is used for supplying liquid to the battery pack liquid cooling plate, and the liquid return opening 520 is used for allowing the liquid in the battery pack liquid cooling plate to flow back to the overflow pipe group 30.

It should be noted that, the second ends of the plurality of overflow pipe groups 30 may be respectively connected to the liquid outlet pipes 40, and the plurality of liquid outlet pipes 40 are converged; or a plurality of overflow pipes may be connected to the same liquid outlet pipe 40.

In this embodiment, the cooling liquid in the liquid inlet pipe 10 flows through the shunt pipe 20, the liquid flows into the plurality of flow-through pipe groups 30 through the shunt cavity 201 in equal quantity, the liquid flows in the flow-through pipe groups 30 and a part of the liquid flows to the battery pack liquid cooling plate through the liquid outlet 510, the other part flows along the flow-through pipe groups 30 towards the liquid outlet pipe 40, and the liquid return port 520 flows back to the direction of the liquid outlet pipe 40 after the internal liquid of the flow-through pipe groups 30 and the flowing liquid in the flow-through pipe groups 30 are combined.

As shown in fig. 1 to 7, the shunt tube 20 includes a tube body 210 and a shunt piece 220, one end of the tube body 210 is communicated with the liquid inlet tube 10, the other end of the tube body 210 has a liquid outlet channel 231 extending towards a direction away from the liquid inlet tube 10, the shunt piece 220 is disposed inside the tube body 210, and the shunt piece 220 cooperates with the tube body 210 to form a plurality of shunt cavities 201.

Specifically, the splitter 220 is disposed inside the tube 210 to divide the inner area of the tube 210 into a plurality of splitting chambers 201 to split the inside of the tube 210, and when the liquid inside the liquid inlet tube 10 flows through the splitter tube 20, the liquid flows into the splitting chambers 201 respectively to flow into the inside of different flow-through tube groups 30.

Further, depending on the number of the inner splits 220 of the tube body 210, the formation of different numbers of the split cavities 201 is also realized, and depending on the formation of the splits 220, the formation of different opening shapes of the split cavities 201, such as a ring shape, a polygon shape, etc., may be realized.

In the present embodiment, the flow dividing piece 220 includes a cylindrical first flow dividing structure 221 and a plurality of second flow dividing structures 222 provided between an outer wall surface of the first flow dividing structure 221 and an inner wall surface of the pipe body 210, the plurality of second flow dividing structures 222 being disposed at intervals along a circumferential direction of the first flow dividing structure 221. The first flow dividing structure 221 is a cylindrical structure to form a cylindrical flow dividing cavity 201, and the second flow dividing structure 222 is disposed between an outer wall surface of the first flow dividing structure 221 and an inner wall surface of the pipe body 210 to form the flow dividing cavity 201 in a region between the inner wall surface of the pipe body 210 and the first flow dividing structure 221.

Further, the first flow dividing structure 221 is coaxial with the pipe body 210, the second flow dividing structure 222 is a plate-shaped structure, and the plurality of second flow dividing structures 222 are equally spaced along the circumferential direction of the first flow dividing structure 221.

Further, the first shunt structure 221 and the second shunt structure 222 have equal extension lengths in the axial direction of the shunt tube 20.

In this embodiment, the volumes of the plurality of flow splitting cavities 201 are equal, that is, the volumes of the flow splitting cavities 201 formed by the first flow splitting structure 221 and the flow splitting cavities 201 formed by the second flow splitting structure 222 are equal, so as to achieve the purpose of delivering the liquid towards the flow through pipe group 30 in an equal amount.

As shown in fig. 1 to 7, in the axial direction of the shunt 20, a first end of the tube body 210 is of an open structure and is in communication with the inlet tube 10, a second end of the tube body 210 is provided with a baffle structure 240 and a protrusion 230 formed on the baffle structure 240, the protrusion 230 extends toward a side far from the inlet tube 10 along the axial direction of the shunt 20, and a liquid outlet channel 231 is formed on the protrusion 230.

Specifically, one end of the shunt tube 20 is opened, the other end of the shunt tube is matched with the peripheral wall of the tube body 210 through the baffle structure 240 to form a groove structure, the shunt sheet 220 is arranged in the groove structure and divides the groove structure into a plurality of shunt cavities 201, and the liquid entering the inside of the shunt cavities 201 flows to the flow-through tube group 30 through the liquid outlet channel 231 on the protrusion 230.

Further, the provision of the projections 230 facilitates connection of the shunt 20 to the shunt tube set 30.

As shown in fig. 1 to 7, the bridge pipe section 323, the liquid outlet pipe section 322 and the liquid return pipe section 324 cooperate to form a liquid supply pipe group, the flow passage group 30 includes a first flow passage 310 and a second flow passage 320, the first flow passage 310 communicates with the liquid outlet channel 231, one end of the second flow passage 320 communicates with the first flow passage 310, the other end of the second flow passage 320 communicates with the liquid outlet pipe 40, and a plurality of liquid supply pipe groups are provided on the second flow passage 320 along the extending direction of the second flow passage 320.

The flow-through pipe set 30 further includes a second valve body 70, where the second valve body 70 is disposed at the liquid return port 520, and the second valve body 70 is a one-way valve to realize one-way flow of liquid.

Specifically, the first flow-through pipe 310 is connected to the protrusion 230 and is disposed in communication with the liquid outlet channel 231, the second flow-through pipe 320 is in communication with the first flow-through pipe 310, and the second flow-through pipe 320 is provided with a liquid exchange port 50 to facilitate the use of the battery pack liquid cooling plate.

Further, the liquid supply tube sets are provided with a plurality of groups to cooperate with the plurality of liquid cooling plates to perform liquid flow, so that each flow-through tube set 30 can exchange liquid with the plurality of battery pack liquid cooling plates.

Further, the second flow-through pipes 320 of the flow-through pipe groups 30 are coplanar in a first direction, wherein the first direction can be vertical or horizontal, and the coplanar second flow-through pipes 320 enable the branch pipes distributed transversely to be in the same plane, so that the installation of the liquid cooling pipeline, the battery pack and the cabinet body is facilitated. In this embodiment, the first flow-through pipe 310 and the second flow-through pipe 320 may be welded, screwed, or connected by the connecting member 60, and the connecting member 60 may be a plug bush.

As shown in fig. 1 to 7, the second overflow pipe 320 includes a plurality of communicating pipe sections 321, the liquid outlet pipe section 322 is communicated with the first overflow pipe 310 through the communicating pipe section 321, and the liquid outlet pipe section 322 and the liquid return pipe section 324 between two adjacent liquid supply pipe sections are communicated through the communicating pipe section 321.

The communicating pipe section 321 is connected to the liquid outlet pipe section 322 and the liquid return pipe section 324 through a connecting member 60, the connecting member 60 may be a sleeve, and the plurality of pipe groups may be welded and fixed.

Specifically, the extending directions of the communicating pipe section 321 and the liquid outlet pipe section 322 are vertical, and the extending directions of the bridge pipe section 323 and the liquid return pipe section 324 are vertical, so that a part of the liquid flowing into the battery pack liquid cooling plate flows along the bridge pipe section 323 toward the liquid return pipe section 324.

Further, the liquid outlet 510 is disposed at one end of the liquid outlet pipe section 322 far away from the communicating pipe section 321, the connecting end of the bridge pipe section 323 and the liquid outlet pipe section 322 is located at the upstream of the liquid outlet pipe section 322, and the liquid return port 520 is aligned with the liquid outlet 510 to facilitate communication with the liquid cooling plate of the battery pack.

Further, the pipe diameter of the bridge pipe section 323 is smaller than the pipe diameters of the liquid outlet pipe section 322 and the liquid return pipe section 324, and the pipe diameter of the bridge pipe section 323 is reduced so that the cooling liquid flows into the battery pack liquid cooling plate as much as possible.

In this embodiment, the flow-through pipe set 30 further includes a first valve body 325, the first valve body 325 is a manual adjusting valve body, the first valve body 325 is disposed on the bridge pipe section 323, the first valve body 325 is controlled to further control the flow rate of the liquid flowing through the bridge pipe section 323, so that the liquid flows into the battery pack liquid cooling plate more, and the flow rate of the liquid flowing to the battery pack liquid cooling plate is kept consistent by adjusting the first valve body 325, so as to further ensure the uniformity of the cooling effect.

In this embodiment, the communicating pipe 321, the liquid outlet pipe 322, the bridge pipe 323 and the liquid return pipe 324 may be connected by an elbow or directly welded.

In this embodiment, the inside of each battery package has the liquid cooling board that is used for cooling electric core, and a plurality of liquid inlets of energy storage system liquid cooling pipeline and the liquid cooling board of a plurality of battery packages form flow path structure, and then realize cooling to the battery package.

In this embodiment, a plurality of battery packs and energy storage system liquid cooling pipeline are all installed in the inside of the cabinet body, realize carrying out the cooling of the same temperature to a plurality of battery packs in the inside of the cabinet body through energy storage system liquid cooling pipeline.

From the above description, it can be seen that the above embodiments of the present utility model achieve the following technical effects:

1. When the liquid in the liquid cooling pipeline of the energy storage system flows through the shunt pipe 20, the liquid flows into the shunt pipe group 30 through different shunt cavities 201 respectively, so that the technical effect of liquid separation is realized.

2. The arrangement of the plurality of overcurrent tube groups 30 is favorable for being communicated with the liquid cooling plates in the plurality of battery packs, so that the plurality of battery packs are synchronously cooled, and the cooling temperatures of the plurality of battery packs are guaranteed to be the same.

3. On the overflow pipe set 30 serving as a branch pipeline, the overflow pipe set 30 is connected in parallel with each battery pack through the liquid outlet pipe section 322, the liquid return pipe section 324 and the bridge pipe section 323 arranged between the liquid outlet pipe section 322 and the liquid return pipe section 324, so that the problems that the flow in each battery pack is uneven and the temperature difference of cooling liquid flowing into each battery pack is large due to the serial connection in the prior art are avoided.

4. The first valve body 325 is arranged on the bridge pipe section 323, so that the flow rate of the inside of the bridge pipe section 323 is controlled through the first valve body 325, the adjustability of liquid entering the inside of the liquid cooling plate is realized, the consistency of the liquid entering the inside of the liquid cooling plate is further ensured, and the cooling uniformity is ensured.

It will be apparent that the embodiments described above are merely some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, shall fall within the scope of the present utility model.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

It should be noted that the terms "first," "second," and the like in the description and the claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the application described herein may be implemented in sequences other than those illustrated or otherwise described herein.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (10)

1. The utility model provides an energy storage system liquid cooling pipeline which characterized in that includes:

A liquid inlet pipe (10);

The liquid inlet pipe (10) is provided with a liquid inlet end, a liquid outlet end is provided with a liquid inlet pipe (10), the liquid inlet pipe (10) is provided with a plurality of liquid inlet pipes (20), the liquid inlet ends of the liquid inlet pipes (10) are communicated with one another through holes, and the liquid outlet ends of the liquid inlet pipes (20) are communicated with one another through holes;

A plurality of overflow pipe groups (30), wherein the first ends of the overflow pipe groups (30) are communicated with the liquid outlet channel (231), each overflow pipe group (30) is provided with a liquid outlet pipe section (322), a liquid return pipe section (324) and a bridge pipe section (323) arranged between the liquid outlet pipe section (322) and the liquid return pipe section (324), and the bridge pipe section (323) is communicated with the liquid outlet pipe section (322) and the liquid return pipe section (324);

And the second ends of the overflow pipe groups (30) are communicated with the liquid outlet pipe (40).

2. The energy storage system liquid cooling circuit of claim 1 wherein said bridge pipe section (323) cooperates with said liquid outlet pipe section (322) and said liquid return pipe section (324) to form a liquid supply pipe section, each of said flow through pipe sections (30) comprising:

A first overflow pipe (310), wherein the first overflow pipe (310) is communicated with the liquid outlet channel (231);

And one end of the second overflow pipe (320) is communicated with the first overflow pipe (310), the other end of the second overflow pipe (320) is communicated with the liquid outlet pipe (40), and a plurality of liquid supply pipe groups are arranged on the second overflow pipe (320) along the extending direction of the second overflow pipe (320).

3. The energy storage system liquid cooling circuit of claim 2 wherein a plurality of said second flow-through tubes (320) of a plurality of said flow-through tube sets (30) are coplanar.

4. The liquid cooling circuit of claim 2, wherein the second bypass tube (320) comprises a plurality of communication tube segments (321),

The liquid outlet pipe section (322) is communicated with the first overflow pipe (310) through the communication pipe section (321);

The liquid outlet pipe section (322) between two adjacent liquid supply pipe sections is communicated with the liquid return pipe section (324) through the communicating pipe section (321).

5. The liquid cooling circuit of claim 4, wherein the liquid cooling circuit comprises a liquid cooling circuit,

The communicating pipe section (321) and the bridge pipe section (323) extend along the axial direction of the liquid inlet pipe (10), and the liquid outlet pipe section (322) and the liquid return pipe section (324) extend along the radial direction of the liquid inlet pipe (10); and/or

The pipe diameter of the bridge pipe section (323) is smaller than the pipe diameters of the liquid outlet pipe section (322) and the liquid return pipe section (324).

6. The energy storage system liquid cooling circuit of claim 4 wherein said flow tube assembly (30) further comprises:

-a first valve body (325), the first valve body (325) being arranged on the bridge pipe section (323);

The second valve body (70), liquid return pipe section (324) have liquid return mouth (520), second valve body (70) set up liquid return mouth (520) department, second valve body (70) are the check valve.

7. The energy storage system liquid cooling circuit of claim 1 wherein said shunt tube (20) comprises:

A pipe body (210), wherein one end of the pipe body (210) is communicated with the liquid inlet pipe (10), and the other end of the pipe body (210) is provided with the liquid outlet channel (231) extending towards the direction far away from the liquid inlet pipe (10);

The flow dividing piece (220), the flow dividing piece (220) is arranged in the pipe body (210), and the flow dividing piece (220) is matched with the pipe body (210) to form a plurality of flow dividing cavities (201).

8. The energy storage system liquid cooling pipeline according to claim 7, wherein the splitter plate (220) comprises a cylindrical first splitter structure (221) and a plurality of second splitter structures (222) arranged between an outer wall surface of the first splitter structure (221) and an inner wall surface of the pipe body (210), and the plurality of second splitter structures (222) are arranged at intervals along a circumferential direction of the first splitter structure (221).

9. The energy storage system liquid cooling circuit of claim 8 wherein the first and second shunt structures (221, 222) have equal lengths extending axially along the shunt tube (20).

10. The liquid cooling pipeline of an energy storage system according to claim 7, wherein, along an axial direction of the shunt tube (20), a first end of the tube body (210) is of an opening structure and is communicated with the liquid inlet tube (10), a second end of the tube body (210) is provided with a baffle structure (240) and a protrusion (230) formed on the baffle structure (240), the protrusion (230) extends towards a side far away from the liquid inlet tube (10) along the axial direction of the shunt tube (20), and the protrusion (230) is provided with the liquid outlet channel (231).