Battery cluster and energy storage

Abstract

The present application provides a battery cluster and an energy storage system. The battery cluster, by means of an installation position provided for a battery pack in a fixing apparatus, can achieve the fixation of the battery pack; moreover, a fixing position is also provided for a cable in the fixing apparatus, and the cable is fixed to the corresponding fixing position, so that when the battery cluster is transported, the cable and the fixing apparatus can be packaged together for transportation, and the transportation cost is thus reduced.

Description

Battery cluster and energy storage system

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on March 20, 2023, with application number 202320572848.6 and invention name “A Battery Cluster and Energy Storage System”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of energy storage technology, and in particular to a battery cluster and an energy storage system. Background Art

[0003] In recent years, with the increasing demand for industrial and commercial energy storage and driven by national policies, industrial and commercial energy storage products have experienced rapid development, and the connectivity requirements within energy storage systems have also been gradually increasing. Existing energy storage systems require the series cables between battery clusters to be packaged and transported, and then installed at the customer's site. However, this method of transportation is costly.

[0004] Therefore, how to reduce the transportation cost of energy storage systems has become an urgent problem to be solved in this field.

[0005] Summary of the Invention

[0006] The present application provides a battery cluster and an energy storage system to reduce the transportation cost of the energy storage system.

[0007] To achieve the above objectives, this application provides the following technical solutions:

[0008] In a first aspect, the present application provides a battery cluster, comprising: a battery cluster comprising: a fixing device, at least one battery pack and corresponding cables; wherein,

[0009] The fixing device is provided with: an installation position of the battery pack, and a fixing position of the cable;

[0010] Each of the cables is fixed at the corresponding fixed position;

[0011] Each battery pack is fixed at the corresponding installation position.

[0012] Optionally, when the battery cluster includes at least two battery packs, the cable realizes a series connection between two adjacent battery packs.

[0013] Optionally, the fixed position of the cable includes: a cable fixed position;

[0014] The cable of the cable is fixed to the cable fixing position by a tie or a quick clip;

[0015] The cable fixing position is set on the fixing device between the power interfaces of two adjacent battery packs;

[0016] The distance between the cable fixing position and each port of the cable is smaller than the distance between the cable fixing position and the wrong power interface.

[0017] Optionally, before installation, one end of the cable is in an electrically connected state, and the other end is in an electrically non-connected state.

[0018] Optionally, the fixed position of the cable further includes: a first port fixed position;

[0019] Before installation, one end of the cable in a non-electrically connected state is fixed to the first port fixed position by a quick clip or a tie wire.

[0020] Optionally, the fixed position of the cable includes: a second port fixed position and a third port fixed position;

[0021] The second port fixing position and the third port fixing position are respectively set within the side projection range of the corresponding battery pack on the fixing device;

[0022] The two ends of the cable are fixed at the second port fixing position and the third port fixing position respectively through quick clips.

[0023] Optionally, the battery packs are alternately arranged in the fixing device up and down;

[0024] The positive and negative poles of adjacent battery packs are opposite on the left and right;

[0025] The adjacent cables are arranged at the corresponding fixed positions in a left-right alternating order.

[0026] Optionally, the fixing device includes a cabinet frame, and the installation position and the fixing position are located in the cabinet frame.

[0027] Optionally, the fixing device includes a cabinet frame and a side fixing plate, the installation position is located in the cabinet frame, and the fixing position is located in the side fixing plate.

[0028] Optionally, the battery cluster further includes: a fuse protection structure;

[0029] The fuse protection structure is arranged in the series branch of the battery cluster.

[0030] Optionally, the battery pack is further connected to: a water inlet pipe and a water outlet pipe;

[0031] The water inlet pipe is connected to the water inlet of the battery pack;

[0032] The water outlet pipe is connected to the water outlet of the battery pack.

[0033] Optionally, the water inlet pipe, the water outlet pipe and the cable of the battery pack are staggered.

[0034] A second aspect of the present application further provides an energy storage system, comprising: at least one battery cluster as described in any one of the first aspects above.

[0035] The battery cluster provided in the present application can fix the battery pack by setting an installation position of the battery pack in the fixing device; moreover, a fixing position for the cable is also set in the fixing device, and the cable is fixed at the corresponding fixing position, so that when the battery cluster is transported, the cable can be packaged together with the fixing device for transportation, thereby reducing transportation costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following is a brief introduction to the drawings to be used in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without any creative work.

[0037] FIG1 is a front view of a battery cluster provided in an embodiment of the present application;

[0038] FIG2 is an axial view of a battery cluster provided in an embodiment of the present application;

[0039] FIG3 is another front view of the battery cluster provided in an embodiment of the present application;

[0040] FIG4 is another front view of the battery cluster provided in an embodiment of the present application;

[0041] FIG5 is a schematic structural diagram of an energy storage system provided in an embodiment of the present application;

[0042] FIG6 is another schematic structural diagram of the energy storage system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0044] In this application, the terms "comprises," "comprising," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not preclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0045] The present application provides a battery cluster to reduce the transportation cost of an energy storage system.

[0046] The battery cluster provided in this embodiment includes a fixing device, at least one battery pack, and corresponding cables. The fixing device is provided with mounting locations for the battery pack and mounting locations for the cables. Each cable is fixed to a corresponding mounting location, and each battery pack is fixed to a corresponding mounting location.

[0047] In actual applications, when the battery cluster includes at least two battery packs, the cable is used to realize the series connection between two adjacent battery packs; and the battery packs in the battery cluster are alternately arranged in the fixing device up and down, and the positive and negative poles of adjacent battery packs are opposite on the left and right; adjacent cables can be arranged in corresponding fixed positions in an alternating order of left and right.

[0048] It is worth noting that the cabinet frame and the side fixing plate can be used as the fixing device, the installation position is set in the cabinet frame, and the fixing position is set in the side fixing plate; or only the cabinet frame can be used as the fixing device, and the installation position and the fixing position are set in the cabinet frame.

[0049] In practical applications, the cable fixing position includes: a cable fixing position; wherein the cable of the cable is fixed to the cable fixing position by a tie or a quick clamp; the cable fixing position is set on a fixing device between the power interfaces of two adjacent battery packs; the distance between the cable fixing position and each port of the cable is less than the distance between the cable fixing position and the wrong power interface. In practical applications, it is not limited to this and can be determined according to the specific application environment, and all are within the scope of protection of this application.

[0050] When the fixing device includes a cabinet frame and side fixing plates, as shown in Figures 1 and 2 , which are front and axial views of a battery cluster 001, respectively, the battery cluster 001 includes: a cabinet frame (as shown in the figure), side fixing plates (as shown in the figure 101 and 102), at least one battery pack (as shown in the figure 201 and 202), and corresponding cables (as shown in the figure 301). The cables are arranged in a left-right alternating order at corresponding fixing positions, with the positive and negative poles of adjacent battery packs 201 and 202 being opposite on the left and right sides, and are arranged alternately up and down in the cabinet frame between the side fixing plates 101 and 102. A cable fixing position 401 is arranged on the side fixing plate 101 between the power ports of the battery packs 201 and 202. The cables of the cable 301 are fixed to the cable fixing position 401 by tying wires to connect the corresponding poles of the battery packs 201 and 202. The distance from the cable fixing position 401 to each port of the cable 301 is less than the distance from the cable fixing position 401 to the incorrect power port.

[0051] When the fixing device only includes a cabinet frame 701, as shown in Figure 4, the battery pack 201 and the battery pack 202 are alternately arranged in the cabinet frame 701 up and down; the cable fixing position 401 is set on the cabinet frame 701 between the power interfaces of the battery packs 201 and 202, and the cable of the cable 301 is fixed at the cable fixing position 401 of the cabinet frame 701 by a tie wire to connect the corresponding poles of the battery pack 201 and the battery pack 202; the distance from the cable fixing position 401 to each port of the cable 301 is less than the distance between the cable fixing position 401 and the wrong power interface.

[0052] The battery cluster 001 provided in this embodiment can fix the battery pack by setting the installation position of the battery pack in the fixing device; moreover, a fixing position for the cable is also set in the fixing device, and the cable is fixed at the corresponding fixing position, so that when the battery cluster 001 is transported, the cable and the fixing device can be packaged together for transportation, thereby realizing the integrated transportation of the battery cluster 001 and the cable, and reducing the transportation cost of the cable; and the cable of the cable is fixed to the cable fixing position by tying wire or quick clamp to avoid the movement or loss of the cable during transportation, and by setting the distance from each cable fixing position to each cable port to be less than the distance between the cable fixing position and the wrong power interface, the wrong connection of each port can be prevented, thereby improving the safety and reliability of the battery cluster 001 and achieving effective foolproofing.

[0053] When existing battery clusters are installed at customer sites, both ends of the cables need to be installed. This installation process is large and prone to misconnection, which can cause short circuits between battery packs and damage the battery cluster.

[0054] Therefore, based on the previous embodiment, this embodiment sets the battery cluster 001 such that before installation, one end of the cable is in an electrically connected state and the other end is in an electrically disconnected state.

[0055] More preferably, the fixing position of each cable further includes: a first port fixing position; before installation, one end of each cable in a non-electrically connected state is fixed to the first port fixing position by a quick clip or a tie wire.

[0056] Specifically, the battery cluster 001 is shown in Figures 1 and 2. Before installation, one end of the cable 301 is electrically connected to the power interface 501 in the battery pack 201; the other end of the cable 301 is in a non-electrically connected state, and the end in the non-electrically connected state is fixed to the first port fixing position 601 on the side fixing plate 101 through a quick clip; in actual application, as shown in Figure 4, the end of the cable 301 in the non-electrically connected state can also be fixed to the first port fixing position 601 on the cabinet frame 701 through a quick clip.

[0057] The battery cluster 001 provided in this embodiment electrically connects one end of the cable and disconnects the other before installation. This allows on-site installation at the customer's site, requiring only the other end of the cable to be installed. This ensures a single installation method without changing the battery pack's structural design, preventing misconnections and improving the safety and reliability of the battery cluster 001. This effectively prevents misconnections and reduces installation time by half, providing a better customer experience. Furthermore, by securing the disconnected end of the cable to a fixture using a quick-release clip or tie wire, the cable can be prevented from moving or getting lost during transportation.

[0058] Based on the above embodiment, the fixed positions of each cable in the battery cluster 001 include: a second port fixed position and a third port fixed position; wherein the second port fixed position and the third port fixed position are respectively set within the side projection range of the corresponding battery pack in the fixing device, and the side projection range is the side projection range close to the corresponding power port; the two ends of the cable are respectively fixed at the second port fixed position and the third port fixed position by quick clips.

[0059] In actual applications, the cable ends have different port models to connect to the corresponding power ports in adjacent battery packs to prevent misconnection. The port on each cable that connects to the negative power port in the battery pack can be black, while the port that connects to the positive power port in the battery pack can be orange. This is not a limitation in actual applications and can be determined based on the specific application environment, all of which are within the scope of protection of this application.

[0060] In actual applications, the battery cluster 001 can also be as shown in Figure 3, where the second port fixing position 602 is set within the side projection range of the battery pack 202 on the side fixing plate 101, and the side projection range is the side projection range close to the power port 502, and the third port fixing position 603 is set within the side projection range of the battery pack 201 on the side fixing plate 101, and the side projection range is the side projection range close to the power port 501; one end of the cable 301 is fixed at the second port fixing position 602 through a quick clip, and the other end of the cable 301 is fixed at the third port fixing position 603 through a quick clip.

[0061] The battery cluster 001 provided in this embodiment secures both ends of its cables at the second and third port locations, respectively. The second and third port locations are positioned adjacent to the power ports of the corresponding battery packs, thereby preventing misconnection of the cables. This improves the safety and reliability of the battery cluster 001 and effectively prevents errors.

[0062] On the basis of the above embodiment, as shown in FIG4 , the battery cluster 001 further includes a fuse protection structure 801 ; the fuse protection structure 801 is disposed in the series branch of the battery cluster 001 .

[0063] In actual applications, when the current in the series branch exceeds the preset value, the overload current will generate heat through the fuse in the fuse protection structure 801, causing the fuse to melt, thereby disconnecting the series circuit and preventing the battery pack from being damaged due to current overload.

[0064] The battery cluster 001 provided in this embodiment provides a fuse protection structure 801 in the series branches of the battery cluster 001 to avoid damage to the battery pack due to current overload, thereby protecting the series branches and improving the safety and reliability of the battery cluster 001.

[0065] On the basis of the above embodiment, preferably, each battery pack in the battery cluster 001 is further connected to: a water inlet pipe and a water outlet pipe; wherein the water inlet pipe is connected to the water inlet of the battery pack, and the water outlet pipe is connected to the water outlet of the battery pack.

[0066] As shown in FIG4 , the water inlet pipe 901 in the battery cluster 001 is connected to the water inlet of the battery pack 203 , and the water outlet pipe 902 is connected to the water outlet of the battery pack 203 ; and the water inlet pipe 901, the water outlet pipe 902 and the cable 302 in the battery cluster 001 are staggered. In actual applications, this is not limited to this and depends on the specific application environment, all of which are within the scope of protection of this application.

[0067] The battery cluster 001 provided in this embodiment connects the water inlet pipe to the water inlet of the battery pack and the water outlet pipe to the water outlet of the battery pack, so that when installing at the customer's site, there is no need to install the water inlet pipe and the water outlet pipe, which reduces the installation volume, shortens the installation time, and brings a better experience to customers.

[0068] Another embodiment of the present application further provides an energy storage system, comprising: at least one battery cluster 001 as described in any of the above embodiments; as shown in FIG5 (only three battery clusters 001 are shown as an example), when there are multiple battery clusters 001, each battery cluster 001 is connected in parallel.

[0069] Optionally, the energy storage system may further include: a PCS (Power Conversion System, energy storage converter) 002 as shown in FIG6 ; wherein the DC side of the PCS 002 is connected to the battery cluster 001 , and the AC side thereof is connected to the power grid via a transformer.

[0070] The energy storage system provided in this embodiment is composed of at least one battery cluster 001 as described in any of the above embodiments, so as to facilitate on-site installation by customers and save transportation costs of the energy storage system. The PCS 002 is also used to achieve bidirectional charging and discharging conversion for each battery cluster 001.

[0071] The same or similar parts between the various embodiments in this specification can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the system or system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment. The system and system embodiments described above are merely schematic, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. Ordinary technicians in this field can understand and implement it without making any creative efforts.

[0072] Professionals may further appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of the two. In order to clearly illustrate the interchangeability of hardware and software, the above description has generally described the components and steps of each example according to their functions. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians may use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0073] With respect to the above description of the disclosed embodiments, the features described in the various embodiments in this specification may be interchanged or combined to enable those skilled in the art to implement or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A battery cluster, characterized in that: include: A fixing device, at least one battery pack and corresponding cables; wherein, The fixing device is provided with: an installation position of the battery pack, and a fixing position of the cable; Each of the cables is fixed at the corresponding fixed position; Each of the battery packs is fixed at the corresponding installation position.

2. The battery cluster according to claim 1, characterized in that: When the battery cluster includes at least two battery packs, the cable realizes a series connection between two adjacent battery packs.

3. The battery cluster according to claim 1, characterized in that: The cable fixing position includes: a cable fixing position; The cable of the cable is fixed to the cable fixing position by tying wires or quick clamps; The cable fixing position is arranged on the fixing device between the power interfaces of two adjacent battery packs; The distance from the cable fixing position to each port of the cable is smaller than the distance from the cable fixing position to the wrong power interface.

4. The battery cluster according to claim 3, characterized in that: Before installation, one end of the cable is in an electrically connected state, and the other end is in an electrically non-connected state.

5. The battery cluster according to claim 4, characterized in that: The fixed position of the cable also includes: a first port fixed position; Before installation, one end of the cable in a non-electrically connected state is fixed to the first port fixed position by a quick clip or a tie wire.

6. The battery cluster according to claim 1, characterized in that: The fixed positions of the cable include: a second port fixed position and a third port fixed position; The second port fixing position and the third port fixing position are respectively arranged within the side projection range of the corresponding battery pack on the fixing device; Two ends of the cable are fixed at the second port fixing position and the third port fixing position respectively through quick clips.

7. The battery cluster according to any one of claims 1 to 6, characterized in that: The battery packs are alternately arranged in the fixing device up and down; The positive and negative poles of adjacent battery packs are opposite to each other. The adjacent cables are arranged at the corresponding fixed positions in a left-right alternating order.

8. The battery cluster according to any one of claims 1 to 6, characterized in that: The fixing device comprises a cabinet frame, and the installation position and the fixing position are located in the cabinet frame.

9. The battery cluster according to any one of claims 1 to 6, characterized in that: The fixing device comprises a cabinet frame and a side fixing plate, the installation position is located in the cabinet frame, and the fixing position is located in the side fixing plate.

10. The battery cluster according to any one of claims 1 to 6, characterized in that: The battery cluster further includes: a fuse protection structure; The fuse protection structure is arranged in the series branch of the battery cluster.

11. The battery cluster according to any one of claims 1 to 6, characterized in that: The battery pack is also respectively connected to: a water inlet pipe and a water outlet pipe; The water inlet pipe is connected to the water inlet of the battery pack; The water outlet pipe is connected to the water outlet of the battery pack.

12. The battery cluster according to claim 11, characterized in that: The water inlet pipe, the water outlet pipe and the cable of the battery pack are staggered.

13. An energy storage system, characterized in that: include: At least one battery cluster as claimed in any one of claims 1 to 12.

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