energy storage system

Abstract

The application discloses an energy storage system, and belongs to the technical field of energy storage heat dissipation. The energy storage system comprises a support cabinet, a heat dissipation assembly and a plurality of battery packs. Under the action of a heat dissipation circulating unit in the heat dissipation assembly, liquid cooling medium in a liquid inlet network in the heat dissipation assembly can enter the heat dissipation channel of the liquid cooling plate through the liquid inlet of the liquid cooling plate, and can take away the heat conducted by the battery pack body after flowing through the heat dissipation channel of the liquid cooling plate. The liquid cooling medium with heat can flow into the liquid outlet network in the heat dissipation assembly through the liquid outlet of the liquid cooling plate and flow into the heat dissipation circulating unit. The heat dissipation circulating unit can dissipate the heat carried by the liquid cooling medium to the external environment. Thus, the heat dissipation of the battery pack body can be realized by the continuous flow of the liquid cooling medium between the liquid inlet network, the heat dissipation channel of the liquid cooling plate, the liquid outlet network and the heat dissipation circulating unit, the structure of the heat dissipation assembly is simplified, and the cost for heat dissipation in the energy storage system is reduced.

Description

Technical Field

[0001] This application relates to the field of energy storage and heat dissipation technology, and in particular to an energy storage system. Background Technology

[0002] With the increasing depletion of traditional energy sources and the numerous problems exposed in their production and use, the development of new energy sources has become a general consensus. Among these, electrochemical energy storage components such as battery packs have been widely used in the field of energy storage.

[0003] To meet greater power demands, multiple battery packs can be installed within a frame to form an energy storage system. During operation, the battery packs generate significant heat. To ensure the safety of the battery packs, a heat dissipation structure is required within the energy storage system to cool them. Currently, energy storage systems can achieve heat dissipation through liquid cooling systems.

[0004] However, currently, liquid cooling systems require multiple primary, secondary, and tertiary pipes to circulate and dissipate heat from the liquid cooling material, resulting in a complex structure and high production costs. Utility Model Content

[0005] This application provides an energy storage system. It solves the problems of complex structure and high production cost of existing liquid cooling systems. The technical solution is as follows:

[0006] On the one hand, an energy storage system is provided, including: a support cabinet, a heat dissipation component, and multiple battery packs;

[0007] The support cabinet has a storage space;

[0008] The plurality of battery packs are all located within the accommodating space; the battery pack includes: a liquid cooling plate, and a battery pack body mounted on the liquid cooling plate, the liquid cooling plate having a heat dissipation channel inside, and the side of the liquid cooling plate having a liquid inlet and a liquid outlet communicating with the heat dissipation channel;

[0009] The heat dissipation assembly includes: a heat dissipation circulation unit, a liquid inlet network, and a liquid outlet network; the liquid inlet network is connected to the heat dissipation circulation unit and to the liquid inlet of each of the liquid cooling plates; the liquid outlet network is connected to the heat dissipation circulation unit and to the liquid outlet of each of the liquid cooling plates.

[0010] Optionally, both the liquid inlet network and the liquid outlet network include: a primary pipe and multiple secondary pipes; one end of the primary pipe is connected to the heat dissipation circulation unit, the ends of the multiple secondary pipes are all connected to the primary pipe, and the multiple secondary pipes are connected to multiple liquid inlets or multiple liquid outlets in the multiple battery packs.

[0011] Optionally, the plurality of battery packs are arranged in multiple columns along the first direction and in multiple layers along the third direction, with the length direction of the battery packs parallel to the second direction; the first direction, the second direction, and the third direction are mutually perpendicular to each other;

[0012] The heat dissipation circulation unit is located on one side of the plurality of battery packs in the first direction; the extension direction of the primary pipe is parallel to the first direction; the extension direction of each of the secondary pipes is parallel to the third direction.

[0013] The plurality of secondary pipes correspond to the plurality of battery packs, and each secondary pipe is connected to each of the liquid inlets or liquid outlets in the corresponding column of battery packs.

[0014] Optionally, the ratio of the inner diameter of the secondary pipe to the inner diameter of the primary pipe is greater than or equal to 0.05 and less than or equal to 1.

[0015] Optionally, the liquid inlet network or the liquid outlet network further includes: a plurality of auxiliary connecting pipes; the plurality of auxiliary connecting pipes correspond one-to-one with the plurality of battery packs, and each auxiliary connecting pipe is connected to the liquid inlet or liquid outlet in the corresponding battery pack; and the auxiliary connecting pipe is also connected to the secondary pipeline.

[0016] Optionally, the auxiliary connecting pipe includes: a first pipe section and a second pipe section; the extension direction of the first pipe section is parallel to the second direction, and the extension direction of the second pipe section is parallel to the third direction; one end of the first pipe section is connected to the liquid inlet or the liquid outlet, and the other end of the first pipe section is connected to the side wall of the second pipe section.

[0017] The secondary pipeline includes multiple graded pipelines arranged upwards from the third party;

[0018] In this configuration, a second pipe segment is distributed between two adjacent graded pipes, and both adjacent graded pipes are connected to the second pipe segment located between them.

[0019] Optionally, the angle between the extension direction of the first pipe segment and the extension direction of the second pipe segment is greater than 45° and less than 135°.

[0020] Optionally, the ratio of the inner diameter of the first pipe segment to the inner diameter of the second pipe segment is greater than 0.1 and less than 1.

[0021] Optionally, in the third direction, the length of the second pipe segment is less than the height of the corresponding battery pack (300).

[0022] Optionally, in the second direction, the length of the first pipe segment is greater than 10 mm and less than 100 mm.

[0023] Optionally, the liquid inlet and the liquid outlet of the liquid cooling plate are located on the same side of the battery pack body in the second direction;

[0024] The inlet network and the outlet network are located on the same side of the plurality of battery packs in the second direction.

[0025] Optionally, the liquid inlet and the liquid outlet of the liquid cooling plate are arranged in the first direction;

[0026] The plurality of secondary pipes in the liquid inlet network and the plurality of secondary pipes in the liquid outlet network are arranged alternately in the first direction.

[0027] Optionally, the primary pipe in the liquid inlet network and the primary pipe in the liquid outlet network are located on the same side of the plurality of battery packs in the third direction.

[0028] Optionally, the primary pipe has a plurality of connecting openings arranged in the first direction, the plurality of connecting openings corresponding one-to-one with the plurality of secondary pipes, and the end of each secondary pipe is connected to the primary pipe through the connecting opening.

[0029] Optionally, the liquid cooling plate includes: a liquid cooling plate body and two auxiliary protrusions; the battery pack body is mounted on the liquid cooling plate body, and the two auxiliary protrusions are located on the liquid cooling plate body;

[0030] The auxiliary protrusion has an auxiliary channel communicating with the heat dissipation channel and an auxiliary opening communicating with the auxiliary channel; the auxiliary opening of the auxiliary protrusion is the liquid inlet or the liquid outlet.

[0031] The beneficial effects of the technical solutions provided in this application include at least the following:

[0032] Multiple battery packs are installed within the support cabinet's storage space. Under the action of the cooling circulation unit within the heat dissipation assembly, the liquid cooling medium located in the inlet network of the heat dissipation assembly enters the heat dissipation channel of the liquid cooling plate through the inlet. After flowing through the heat dissipation channel, it carries away the heat transferred from the battery pack to the liquid cooling plate. The heated liquid cooling medium then flows through the outlet of the liquid cooling plate into the outlet network of the heat dissipation assembly, and then into the cooling circulation unit. The cooling circulation unit dissipates the heat carried by the liquid cooling medium to the external environment. Through the continuous flow of the liquid cooling medium between the inlet network, the heat dissipation channel of the liquid cooling plate, the outlet network, and the cooling circulation unit, heat dissipation of the battery pack is achieved, simplifying the structure of the heat dissipation assembly and reducing the cost of heat dissipation in the energy storage system. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a schematic diagram of the structure of an energy storage system provided in this application;

[0035] Figure 2 This is a schematic diagram of the structure of an energy storage system without a support cabinet provided in an embodiment of this application;

[0036] Figure 3 This is a schematic diagram of the structure of a battery pack provided in an embodiment of this application;

[0037] Figure 4 This is a schematic diagram of another energy storage system provided in an embodiment of this application;

[0038] Figure 5 This is a schematic diagram of another energy storage system provided in the embodiments of this application;

[0039] Figure 6 This is a partial structural schematic diagram of an energy storage system provided in an embodiment of this application;

[0040] Figure 7 This is a schematic diagram of the structure of an auxiliary connecting pipe provided in an embodiment of this application;

[0041] Figure 8 This is a schematic diagram of another battery pack provided in an embodiment of this application. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0043] This application provides an energy storage system; please refer to the embodiments provided. Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the structure of an energy storage system provided in this application. Figure 2 This is a schematic diagram of an energy storage system without a support cabinet, provided in an embodiment of this application. The energy storage system may include: a support cabinet 100, a heat dissipation component 200, and multiple battery packs 300. The support cabinet 100 in the energy storage system may have a receiving space K, and the multiple battery packs 300 in the energy storage system may be located within the receiving space K of the support cabinet 100.

[0044] like Figure 3 As shown, Figure 3 This is a schematic diagram of a battery pack structure provided in an embodiment of this application. Multiple battery packs 300 in the energy storage system may include: a liquid cooling plate 301, and a battery pack body 302 mounted on the liquid cooling plate 301. The liquid cooling plate 301 in the battery pack 300 may have a heat dissipation channel inside, and the side of the liquid cooling plate 301 may have an inlet O1 and an outlet O2 communicating with the heat dissipation channel.

[0045] The heat dissipation component 200 in the energy storage system may include: a heat dissipation circulation unit 201, a liquid inlet network 200a, and a liquid outlet network 200b. The liquid inlet network 200a of the heat dissipation component 200 can be connected to the heat dissipation circulation unit 201 and can be connected to the liquid inlet O1 of each liquid cooling plate 301. The liquid outlet network 200b of the heat dissipation component 200 can be connected to the heat dissipation circulation unit 201 and can be connected to the liquid outlet O2 of each liquid cooling plate 301.

[0046] In this application, the heat generated by the battery pack body 301 in the battery pack 300 can be conducted to the liquid cooling plate 301. The inlet network 200a and outlet network 200b of the heat dissipation assembly 200 can be filled with a liquid cooling medium. The heat dissipation circulation unit 201 can drive the liquid cooling medium to continuously flow between the inlet network 200a, the heat dissipation channel of the liquid cooling plate 301, the outlet network 200b, and the heat dissipation circulation unit 201. For example, the liquid cooling medium can be water.

[0047] Here, under the action of the heat dissipation circulation unit 201, the liquid cooling medium can enter the heat dissipation channel of the liquid cooling plate 301 from the liquid inlet network 200a through the liquid inlet O1 of the liquid cooling plate 301. After flowing through the heat dissipation channel of the liquid cooling plate 301, it can carry away the heat transferred from the battery pack body 302 to the liquid cooling plate 301. The liquid cooling medium carrying heat can then flow into the liquid outlet network 200b through the liquid outlet O2 of the liquid cooling plate 301, and then into the heat dissipation circulation unit 201. The heat dissipation circulation unit 201 can dissipate the heat carried by the liquid cooling medium to the external environment. In this way, by continuously flowing the liquid cooling medium between the liquid inlet network 200a, the heat dissipation channel of the liquid cooling plate 301, the liquid outlet network 200b, and the heat dissipation circulation unit 201, heat dissipation of the battery pack body 302 can be achieved, simplifying the structure of the heat dissipation component and reducing the cost of heat dissipation in the energy storage system.

[0048] In summary, this application provides an energy storage system including a support cabinet, a heat dissipation assembly, and multiple battery packs, which are installed within the housing space of the support cabinet. Under the action of the heat dissipation circulation unit in the heat dissipation assembly, the liquid cooling medium located in the liquid inlet network of the heat dissipation assembly can enter the heat dissipation channel of the liquid cooling plate through the liquid inlet. After flowing through the heat dissipation channel of the liquid cooling plate, it can carry away the heat transferred from the battery pack body to the liquid cooling plate. The heated liquid cooling medium can then flow through the liquid outlet of the liquid cooling plate into the liquid outlet network of the heat dissipation assembly, and then into the heat dissipation circulation unit. The heat dissipation circulation unit can dissipate the heat carried by the liquid cooling medium to the external environment. Thus, by continuously flowing the liquid cooling medium between the liquid inlet network, the heat dissipation channel of the liquid cooling plate, the liquid outlet network, and the heat dissipation circulation unit, heat dissipation of the battery pack body can be achieved, simplifying the structure of the heat dissipation assembly and reducing the cost of heat dissipation in the energy storage system.

[0049] Optional, please refer to Figure 4 , Figure 4 This is a schematic diagram of another energy storage system provided in this application embodiment. Both the liquid inlet network 200a and the liquid outlet network 200b in the heat dissipation assembly 200 may include a primary pipe 202 and multiple secondary pipes 203. One end of the primary pipe 202 can be connected to the heat dissipation circulation unit 201, and the ends of the multiple secondary pipes 203 can be connected to the primary pipe 202. Furthermore, the multiple secondary pipes 203 can be connected to multiple liquid inlets O1 or multiple liquid outlets O2 in the multiple battery packs 300.

[0050] In this way, the cooling circulation unit 201 can drive the liquid cooling medium to flow into the primary pipe 202 of the liquid inlet network 200a, and then through the primary pipe 202 into multiple secondary pipes 203. From there, it flows through the secondary pipes 203 and the corresponding inlet O1 into the heat dissipation channel of the corresponding liquid cooling plate 301, thus carrying away the heat from the liquid cooling plate 301. The heated liquid cooling medium then flows through the outlet O2 from the heat dissipation channel of the liquid cooling plate 301 into the secondary pipe 203 of the outlet network 200b, and then into the primary pipe 202 of the outlet network 200b, before flowing back into the cooling circulation unit 201. This cooling circulation 201 dissipates the heat carried by the liquid cooling medium to the outside. This achieves the circulation of the liquid cooling medium among the cooling circulation unit 201, the liquid inlet network 200a, the heat dissipation channel of the liquid cooling plate 301, and the outlet network 200b, thereby dissipating the heat from the battery pack 300.

[0051] Optionally, the ratio of the inner diameter of the secondary pipe 203 to the inner diameter of the primary pipe 202 can be greater than or equal to 0.05 and less than or equal to 1. That is, the inner diameter of the secondary pipe 203 can be smaller than the inner diameter of the primary pipe 202, and the inner diameter of the secondary pipe 203 will not be too small, so as to ensure the normal flow of the liquid cooling medium.

[0052] It should be noted that the inner diameter of the primary pipe 202 in the liquid inlet network 200a can be equal to the inner diameter of the primary pipe 202 in the liquid outlet network 200b, and the inner diameter of the secondary pipe 203 in the liquid outlet network can be equal to the inner diameter of the secondary pipe 203 in the liquid outlet network 200b.

[0053] Optional, such as Figure 3 , Figure 4 and Figure 5 As shown, Figure 5 This is a schematic diagram of another energy storage system provided in this application embodiment. Multiple battery packs 300 in the energy storage system can be arranged in multiple columns along a first direction X, and can be arranged in multiple layers along a third direction Z. The length direction of the battery pack 300 can be parallel to the second direction Y. Here, the first direction X, the second direction Y, and the third direction Z are mutually perpendicular. It should be noted that the length direction of the battery pack 300 can be parallel to the second direction Y, the height direction of the battery pack 300 can be parallel to the third direction Z, and the width direction of the battery pack 300 can be parallel to the first direction X.

[0054] For example, multiple battery packs 300 can be arranged in m columns in the first direction X, where m can be between 1 and 20. Multiple battery packs 300 can also be arranged in n layers in the third direction Z, where n can be between 1 and 20. Thus, the number of battery packs 300 in the energy storage system can be m × n.

[0055] The cooling circulation unit 201 in the cooling system 200 can be located on one side of multiple battery packs 300 in the first direction X. The extension direction of the primary pipe 202 in the cooling system can be parallel to the first direction X. The extension direction of each secondary pipe 203 in the cooling system can be parallel to the third direction Z. The multiple secondary pipes 203 in the cooling system can correspond to multiple rows of battery packs 300, and each secondary pipe 203 can be connected to each liquid inlet O1 or each liquid outlet O2 in the corresponding row of battery packs 300.

[0056] Here, under the action of the heat dissipation circulation unit 201, the liquid cooling medium can flow through the primary pipe 201 in the liquid inlet network 200a into the multiple rows of secondary pipes 203 corresponding to the multiple rows of battery packs 300. The liquid cooling medium flowing into one row of secondary pipes 203 in the liquid inlet network 200a can then flow through the various inlets O1 connected to that row of secondary pipes 203 into the heat dissipation channels of each liquid cooling plate 301 in the row of battery packs 300, so as to dissipate the heat of each The heat conducted from the battery pack body 302 to each liquid cooling plate 301 is carried away. Then, the heated liquid cooling medium flows from the outlet O2 of each liquid cooling plate 301 into the secondary pipes 203 in the outlet network 200b. Subsequently, the liquid cooling medium in each row of secondary pipes 203 in the outlet network 200b flows into the primary pipes 202 in the outlet network 200b, and then flows again through the primary pipes 202 into the heat dissipation circulation unit 201. This achieves the circulation of the liquid cooling medium between the heat dissipation circulation unit 201, the inlet network 200a, the heat dissipation channels of the liquid cooling plates 301, and the outlet network 200b, thereby dissipating the heat from the battery pack 300.

[0057] It should be noted that the end of the secondary pipe 203 facing away from the primary pipe 202 may have an vent valve, or the end of the secondary pipe 203 facing away from the primary pipe 202 may be a closed end. For example, the end of the secondary pipe 203 in the liquid inlet network 200a facing away from the primary pipe 202 may have an vent valve, while the end of the secondary pipe 203 in the liquid outlet network 200b facing away from the primary pipe 202 may be a closed end. In this case, the number of secondary pipes 203 with vent valves in the heat dissipation system may be equal to the number of secondary pipes 203 with a closed end, and both may be equal to the number of columns m of the multiple battery packs 300 arranged in the first direction X.

[0058] Optional, such as Figure 4 and Figure 6 As shown, Figure 6This is a partial structural diagram of an energy storage system provided in an embodiment of this application. The liquid inlet network 200a or liquid outlet network 200b in the heat dissipation system may further include multiple auxiliary connecting pipes 204. Each of the multiple auxiliary connecting pipes 204 in the liquid inlet network 200a or liquid outlet network 200b may correspond one-to-one with multiple battery packs 300. Each auxiliary connecting pipe 204 may be connected to the liquid inlet O1 or liquid outlet O2 of the liquid cooling plate 301 in the corresponding battery pack 300, and the auxiliary connecting pipe 204 may also be connected to a secondary pipeline 203.

[0059] In this way, the liquid cooling medium entering the secondary pipe 202 in the liquid inlet network 200a can flow into the auxiliary connecting pipe 204 in the liquid inlet network 200a, and then flow into the heat dissipation channel of the corresponding liquid cooling plate 301 through the corresponding liquid inlet O1. The liquid cooling medium entering the heat dissipation channel of the liquid cooling plate 301 can flow into the corresponding auxiliary connecting pipe 204 in the liquid outlet network 200b through the liquid outlet O2, and then flow into the secondary pipe 203 of the liquid outlet network 200b through the auxiliary connecting pipe 204.

[0060] Optional, please refer to Figure 6 and Figure 7 , Figure 7 This is a schematic diagram of an auxiliary connecting pipe provided in an embodiment of this application. The auxiliary connecting pipe 204 may include a first pipe segment 2041 and a second pipe segment 2042. The extension direction of the first pipe segment 2041 in the auxiliary connecting pipe 204 may be parallel to the second direction Y, and the extension direction of the second pipe segment 2042 may be parallel to the third direction Z. One end of the first pipe segment 2041 in the auxiliary connecting pipe 204 may be connected to the liquid inlet O1 or liquid outlet O2 of the corresponding liquid cooling plate 301, and the other end of the first pipe segment 2041 may be connected to the side wall surface of the second pipe segment 2042.

[0061] The secondary conduit 203 in the heat dissipation system may include multiple graded conduits 203a arranged in the Z-direction. A second conduit segment 2042 may be distributed between two adjacent graded conduits 203a, and both adjacent graded conduits 203a can be connected to the second conduit segment 2042 located between them. That is, the auxiliary connecting conduit 204 can be a tee pipe, connecting two adjacent graded conduits 203a arranged in the Z-direction and a heat dissipation channel of the liquid cooling plate 301 of the battery pack 300.

[0062] Thus, for the secondary conduit 203 corresponding to a row of battery packs 300, multiple staged conduits 203a within the secondary conduit 203 can correspond to multiple battery packs 300 within the row of battery packs 300. Each staged conduit 203a can be connected to the liquid inlet O1 or outlet O2 of the liquid cooling plate 301 of the corresponding battery pack 300 via an auxiliary connecting pipe 204. Two adjacent staged conduits 203a corresponding to two adjacent battery packs 300 can be connected via an auxiliary connecting pipe 204. This allows the secondary conduit 203 corresponding to a row of battery packs 300 to be connected to each liquid inlet O1 or outlet O2 within that row of battery packs 300.

[0063] It should be noted that the number of graded pipes 203a in the secondary pipes 203 of the liquid inlet network 200a corresponding to a row of battery packs 300 can be the same as the number of graded pipes 203a in the secondary pipes 203 of the liquid outlet network 200b corresponding to the same row of battery packs 300, and both can be the number of layers n of the battery packs 300 in the row of battery packs 300.

[0064] It should be noted that, as Figure 7 As shown, the outer surface of the auxiliary connecting pipe 204 may have two annular groove structures 2043. The two annular groove structures 2043 of the auxiliary connecting pipe 204 may be distributed in the third direction Z at the end position of the auxiliary connecting pipe 204. The two adjacent graded pipes 203a located at both ends of the auxiliary connecting pipe 204 may be connected to the auxiliary connecting pipe 204 through the two annular groove structures 2042 respectively.

[0065] Optionally, the angle between the extension direction of the first pipe segment 2041 and the extension direction of the second pipe segment 2042 in the auxiliary connecting pipe 204 can be greater than 45° and less than 135°. For example, the angle between the axis of the first pipe segment 2041 and the axis of the second pipe segment 2042 can be 90°.

[0066] Optionally, the ratio of the inner diameter of the first pipe section 2041 to the inner diameter of the second pipe section 2042 in the auxiliary connecting pipe 204 can be greater than 0.1 and less than 1. That is, the inner diameter of the first pipe section 2041 in the auxiliary connecting pipe 204 can be smaller than the inner diameter of the second pipe section 2042, and the inner diameter of the second pipe section 2042 will not be too small, so as to ensure the normal flow of the liquid cooling medium.

[0067] Optionally, in the third direction Z, the length of the second segment 2042 in the auxiliary connecting pipe 204 can be less than the height of the corresponding battery pack 300. Here, the length of the second segment 2042 in the auxiliary connecting pipe 204 in the third direction Z will not be too small. For example, the height of the second segment 2042 in the auxiliary connecting pipe 204 in the third direction Z can be greater than 1 mm.

[0068] Optionally, in the second direction Y, the length of the first pipe segment 2041 in the auxiliary connecting pipe 204 can be greater than 10 mm and less than 100 mm.

[0069] Optional, please refer to Figure 4 , Figure 5 and Figure 8 , Figure 8 This is a schematic diagram of another battery pack structure provided in this application embodiment. The liquid inlet O1 and liquid outlet O2 of the liquid cooling plate 301 in the battery pack 300 can be located on the same side of the battery pack body 302 in the second direction Y. The liquid inlet network 200a and liquid outlet network 200b in the heat dissipation system 200 can be located on the same side of multiple battery packs 300 in the second direction Y.

[0070] Optional, such as Figure 8 As shown, the liquid inlet O1 and liquid outlet O2 of the liquid cooling plate 301 in the battery pack 300 can be arranged in the first direction X. That is, for a battery pack 300 arranged in multiple rows in the first direction X, the liquid inlet O1 and liquid outlet O2 of each battery pack 300 in each row are arranged along the first direction X. In this way, for a battery pack 300 arranged in multiple rows in the first direction X, the multiple liquid inlets O1 and multiple liquid outlets O2 of the multiple rows of battery packs 300 can be arranged alternately in the first direction X. In this way, the multiple secondary pipes 203 in the liquid inlet network 200a and the multiple secondary pipes 203 in the liquid outlet network 200b can be arranged alternately in the first direction X.

[0071] Optional, such as Figure 4 As shown, the primary pipe 202 may have multiple connecting openings O4 arranged in the first direction X. The multiple connecting openings O4 of the primary pipe 202 may correspond one-to-one with multiple secondary pipes 203, and the end of each secondary pipe 203 may be connected to the primary pipe 202 through the connecting openings O4.

[0072] In this way, the ends of the multiple secondary pipes 202 in the liquid inlet network 200a can be respectively connected to the multiple connecting openings O4 of the primary pipe 202 of the liquid inlet network 200a. The ends of the multiple secondary pipes 202 in the liquid outlet network 200b can be respectively connected to the multiple connecting openings O4 of the primary pipe 202 of the liquid outlet network 200a. The multiple connecting openings O4 of the primary pipe 202 in the liquid inlet network 200a and the multiple connecting openings O4 of the primary pipe 202 in the liquid outlet network 200b can be arranged alternately in the first direction X.

[0073] Optional, such as Figure 4 and Figure 5As shown, the primary pipe 202 in the liquid inlet network 200a and the primary pipe 202 in the liquid outlet network 200b can be located on the same side of the multiple battery packs 300 in the third direction Z. Thus, the primary pipe 202 and multiple secondary pipes 203 in the liquid inlet network 200a, and the primary pipe 202 and multiple secondary pipes 203 in the liquid outlet network 200b are all located on the same side of the multiple battery packs 300 in the second direction Y. Furthermore, the arrangement of the pipes in the liquid inlet network 200a and the primary pipe 202 in the liquid outlet network 200b on the same side of the multiple battery packs 300 in the third direction Y makes the arrangement and structure of the pipes in the liquid inlet network 200a and the liquid outlet network 200b in the heat dissipation assembly 200 relatively simple.

[0074] Optional, such as Figure 8 As shown, the liquid cooling plate 301 in the battery pack 300 may include a liquid cooling plate body 3011 and two auxiliary protrusions 3012. The battery pack body 302 in the battery pack 300 may be mounted on the liquid cooling plate body 3011, and the two auxiliary protrusions 3012 may be located on the liquid cooling plate body 3011. The auxiliary protrusions 3012 in the liquid cooling plate 301 may have: an auxiliary channel communicating with the heat dissipation channel of the liquid cooling plate 301, and an auxiliary opening communicating with the auxiliary channel. Here, the auxiliary opening of the auxiliary protrusion 3012 is the liquid inlet O1 or the liquid outlet O2 of the liquid cooling plate 301, and the openings of the two auxiliary protrusions 3012 may be the liquid inlet O1 and the liquid outlet O2 of the liquid cooling plate 301, respectively.

[0075] It should be noted that the two auxiliary protrusions 3012 can be located on the side of the liquid cooling plate 3011 where the battery pack body 302 is distributed. The two auxiliary protrusions 3012 and the battery pack body 302 can be arranged in the second direction Y. The liquid inlet O1 and liquid outlet O2 located on the two auxiliary protrusions 3012 can be located on the side of the auxiliary protrusions 3012 away from the battery pack body 302 in the second direction Y, so that the end of the first pipe section 2041 of the auxiliary connecting pipe 204 away from the second pipe section 2042 can be connected to the liquid inlet O1 or the liquid outlet O2.

[0076] It should also be noted that the end of the first pipe section 2041 in the auxiliary connecting pipe 204 that is away from the second pipe section 2042 and the auxiliary protrusion 3012 can be connected by welding or by a threaded structure. This application embodiment does not specifically limit this.

[0077] In summary, this application provides an energy storage system including a support cabinet, a heat dissipation assembly, and multiple battery packs, which are installed within the housing space of the support cabinet. Under the action of the heat dissipation circulation unit in the heat dissipation assembly, the liquid cooling medium located in the liquid inlet network of the heat dissipation assembly can enter the heat dissipation channel of the liquid cooling plate through the liquid inlet. After flowing through the heat dissipation channel of the liquid cooling plate, it can carry away the heat transferred from the battery pack body to the liquid cooling plate. The heated liquid cooling medium can then flow through the liquid outlet of the liquid cooling plate into the liquid outlet network of the heat dissipation assembly, and then into the heat dissipation circulation unit. The heat dissipation circulation unit can dissipate the heat carried by the liquid cooling medium to the external environment. Thus, by continuously flowing the liquid cooling medium between the liquid inlet network, the heat dissipation channel of the liquid cooling plate, the liquid outlet network, and the heat dissipation circulation unit, heat dissipation of the battery pack body can be achieved, simplifying the structure of the heat dissipation assembly and reducing the cost of heat dissipation in the energy storage system.

[0078] In this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The term "multiple" refers to two or more unless otherwise expressly defined.

[0079] The above description is merely an optional embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An energy storage system, characterized in that, Includes: a support cabinet (100), a heat dissipation assembly (200), and multiple battery packs (300); The support cabinet (100) has a receiving space (K); The plurality of battery packs (300) are all located within the accommodating space (K); the battery pack (300) includes: a liquid cooling plate (301) and a battery pack body (302) mounted on the liquid cooling plate (301), the liquid cooling plate (301) has a heat dissipation channel inside, and the side of the liquid cooling plate (301) has a liquid inlet (O1) and a liquid outlet (O2) communicating with the heat dissipation channel; The heat dissipation assembly (200) includes: a heat dissipation circulation unit (201), a liquid inlet network (200a), and a liquid outlet network (200b); the liquid inlet network (200a) is connected to the heat dissipation circulation unit (201) and is connected to the liquid inlet (O1) of each of the liquid cooling plates (301); the liquid outlet network (200b) is connected to the heat dissipation circulation unit (201) and is connected to the liquid outlet (O2) of each of the liquid cooling plates (301).

2. The energy storage system according to claim 1, characterized in that, Both the liquid inlet network (200a) and the liquid outlet network (200b) include: a primary pipe (202) and a plurality of secondary pipes (203); one end of the primary pipe (202) is connected to the heat dissipation circulation unit (201), the ends of the plurality of secondary pipes (203) are all connected to the primary pipe (202), and the plurality of secondary pipes (203) are connected to a plurality of liquid inlets (O1) or a plurality of liquid outlets (O2) in the plurality of battery packs (300).

3. The energy storage system according to claim 2, characterized in that, The plurality of battery packs (300) are arranged in multiple columns along a first direction (X) and in multiple layers along a third direction (Z). The length direction of the battery packs (300) is parallel to the second direction (Y). The first direction (X), the second direction (Y) and the third direction (Z) are mutually perpendicular. The heat dissipation circulation unit (201) is located on one side of the plurality of battery packs (300) in the first direction (X); the extension direction of the primary pipe (202) is parallel to the first direction (X); the extension direction of each of the secondary pipes (203) is parallel to the third direction (Z). The plurality of secondary pipes (203) correspond to the plurality of battery packs (300), and each secondary pipe (203) is connected to each of the liquid inlets (O1) or liquid outlets (O2) in the corresponding column of battery packs (300).

4. The energy storage system according to claim 3, characterized in that, The ratio of the inner diameter of the secondary pipe (203) to the inner diameter of the primary pipe (202) is greater than or equal to 0.05 and less than or equal to 1.

5. The energy storage system according to claim 3, characterized in that, The liquid inlet network or the liquid outlet network further includes: a plurality of auxiliary connecting pipes (204); the plurality of auxiliary connecting pipes (204) correspond one-to-one with the plurality of battery packs (300), and each auxiliary connecting pipe (204) is connected to the liquid inlet (O1) or the liquid outlet (O2) in the corresponding battery pack (300); and the auxiliary connecting pipe (204) is also connected to the secondary pipeline (203).

6. The energy storage system according to claim 5, characterized in that, The auxiliary connecting pipe (204) includes: a first pipe section (2041) and a second pipe section (2042); the extension direction of the first pipe section (2041) is parallel to the second direction (Y), and the extension direction of the second pipe section (2042) is parallel to the third direction (Z); one end of the first pipe section (2041) is connected to the liquid inlet (O1) or the liquid outlet (O2), and the other end of the first pipe section (2041) is connected to the side wall of the second pipe section (2042); The secondary pipeline (203) includes a plurality of graded pipelines (203a) arranged in the third direction (Z); A second pipe segment (2042) is distributed between two adjacent graded pipes (203a), and both adjacent graded pipes (203a) are connected to the second pipe segment (2042) located between them.

7. The energy storage system according to claim 6, characterized in that, The angle between the extension direction of the first pipe segment (2041) and the extension direction of the second pipe segment (2042) is greater than 45° and less than 135°; And / or, the ratio of the inner diameter of the first pipe segment (2041) to the inner diameter of the second pipe segment (2042) is greater than or equal to 0.1 and less than or equal to 1; And / or, in the third direction (Z), the length of the second pipe segment (2042) is less than the height of the corresponding battery pack (300); And / or, in the second direction (Y), the length of the first pipe segment (2041) is greater than or equal to 10 mm and less than or equal to 100 mm.

8. The energy storage system according to claim 3, characterized in that, The liquid inlet (O1) and the liquid outlet (O2) of the liquid cooling plate (301) are located on the same side of the battery pack body (302) in the second direction (Y); The inlet network (200a) and the outlet network (200b) are located on the same side of the plurality of battery packs (300) in the second direction (Y).

9. The energy storage system according to claim 8, characterized in that, The liquid inlet (O1) and the liquid outlet (O2) of the liquid cooling plate (301) are arranged in the first direction (X); The plurality of secondary pipes (203) in the liquid inlet network (200a) and the plurality of secondary pipes (203) in the liquid outlet network (200b) are arranged alternately in the first direction (X).

10. The energy storage system according to claim 9, characterized in that, The primary conduit (202) in the liquid inlet network (200a) and the primary conduit (202) in the liquid outlet network (200b) are located on the same side of the plurality of battery packs (300) in the third direction (Z).

11. The energy storage system according to any one of claims 3-10, characterized in that, The primary pipe (202) has a plurality of connecting openings (O4) arranged in the first direction (X), and the plurality of connecting openings (O4) correspond one-to-one with the plurality of secondary pipes (203). The end of each secondary pipe (203) is connected to the primary pipe (202) through the connecting opening (O4).

12. The energy storage system according to any one of claims 1-10, characterized in that, The liquid cooling plate (301) includes: a liquid cooling plate body (3011) and two auxiliary protrusions (3012); the battery pack body (302) is mounted on the liquid cooling plate body (3011), and the two auxiliary protrusions (3012) are located on the liquid cooling plate body (3011); The auxiliary protrusion (3012) has an auxiliary channel communicating with the heat dissipation channel and an auxiliary opening communicating with the auxiliary channel; the auxiliary opening of the auxiliary protrusion (3012) is the liquid inlet (O1) or the liquid outlet (O2).

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