CN219873778U

CN219873778U - energy storage device

Info

Publication number: CN219873778U
Application number: CN202223144734.6U
Authority: CN
Inventors: 尹福来; 李炜; 李菲; 王真意
Original assignee: China Lithium Battery Technology Co Ltd
Current assignee: China Lithium Battery Technology Co Ltd
Priority date: 2022-11-25
Filing date: 2022-11-25
Publication date: 2023-10-20
Anticipated expiration: 2032-11-25

Abstract

The present disclosure relates to the field of energy storage technologies, and in particular, to an energy storage device, the energy storage device includes: a first battery cluster, a second battery cluster, and a first fuse, the first battery cluster comprising a first sub-battery cluster and a second sub-battery cluster, the first sub-battery cluster comprising at least one battery, the second sub-battery cluster comprising at least one battery; the second battery cluster is arranged on one side of the first battery cluster; the first fuse is disposed between the first battery cluster and the second battery cluster, and the first fuse electrically connects the first sub-battery cluster and the second sub-battery cluster. Through set up first fuse between first battery cluster and second battery cluster, utilized the space between first battery cluster and the second battery cluster to arrange first fuse effectively, promoted the inside space utilization of energy memory.

Description

Energy storage device

Technical Field

The disclosure relates to the technical field of energy storage, in particular to an energy storage device.

Background

With the development and progress of technology, research and development of new energy are imperative. The energy storage device is one of important carriers in the application of new energy, and the application of the energy storage device is gradually wide. In practical application, the energy storage device has the problem of low internal space utilization rate.

It should be noted that the information disclosed in the above background section is only for enhancing understanding of the background of the present disclosure and thus may include information that does not constitute prior art known to those of ordinary skill in the art.

Disclosure of Invention

An object of the present disclosure is to provide an energy storage device, and further to at least improve the space utilization inside the energy storage device to a certain extent.

The present disclosure provides an energy storage device comprising:

a first battery cluster comprising a first sub-battery cluster comprising at least one battery and a second sub-battery cluster comprising at least one battery;

the second battery cluster is arranged on one side of the first battery cluster;

the first fuse is arranged between the first battery cluster and the second battery cluster, and the first fuse is electrically connected with the first sub-battery cluster and the second sub-battery cluster.

According to the energy storage device, the first fuse is arranged between the first battery cluster and the second battery cluster, so that the space between the first battery cluster and the second battery cluster is effectively utilized, and the space utilization rate of the inside of the energy storage device is improved. And the first sub-battery cluster and the second sub-battery cluster are connected through the first fuse, so that the safety of the energy storage device can be improved.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure. It will be apparent to those of ordinary skill in the art that the drawings in the following description are merely examples of the disclosure and that other drawings may be derived from them without undue effort.

Fig. 1 is a schematic structural diagram of an energy storage device according to an exemplary embodiment of the present disclosure;

FIG. 2 is a schematic diagram of another energy storage device according to an exemplary embodiment of the present disclosure;

fig. 3 is a partial enlarged view of an energy storage device provided in an exemplary embodiment of the present disclosure.

Detailed Description

The technical solutions in the exemplary embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings in the exemplary embodiments of the present disclosure. The example embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the present disclosure, and it is therefore to be understood that various modifications and changes may be made to the example embodiments without departing from the scope of the present disclosure.

In the description of the present disclosure, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance unless explicitly specified or limited otherwise; the term "plurality" refers to two or more than two; the term "and/or" includes any and all combinations of one or more of the associated listed items. In particular, references to "the/the" object or "an" object are likewise intended to mean one of a possible plurality of such objects.

Unless specified or indicated otherwise, the terms "connected," "fixed," and the like are to be construed broadly and are, for example, capable of being fixedly connected, detachably connected, or integrally connected, electrically connected, or signally connected; "coupled" may be directly coupled or indirectly coupled through intermediaries. The specific meaning of the terms in the present disclosure may be understood by those skilled in the art according to the specific circumstances.

Further, in the description of the present disclosure, it should be understood that the terms "upper", "lower", "inner", "outer", and the like, as described in the example embodiments of the present disclosure, are described with the angles shown in the drawings, and should not be construed as limiting the example embodiments of the present disclosure. It will also be understood that in the context of an element or feature being connected to another element(s) "upper," "lower," or "inner," "outer," it can be directly connected to the other element(s) "upper," "lower," or "inner," "outer," or indirectly connected to the other element(s) "upper," "lower," or "inner," "outer" via intervening elements.

Exemplary embodiments of the present disclosure provide an energy storage device, as shown in fig. 1 and 3, including: a first battery cluster 110, a second battery cluster 120, and a first fuse 20, the first battery cluster 110 including a first sub-battery cluster 111 and a second sub-battery cluster 112, the first sub-battery cluster 111 including at least one battery, the second sub-battery cluster 112 including at least one battery; the second battery cluster 120 is provided at one side of the first battery cluster 110; the first fuse 20 is disposed between the first and second battery clusters 110 and 120, and the first fuse 20 electrically connects the first and second sub-battery clusters 111 and 112.

According to the energy storage device provided by the embodiment of the disclosure, the first fuse 20 is arranged between the first battery cluster 110 and the second battery cluster 120, so that the space between the first battery cluster 110 and the second battery cluster 120 is effectively utilized to arrange the first fuse 20, and the space utilization rate of the interior of the energy storage device is improved. And the first sub-battery cluster 111 and the second sub-battery cluster 112 are connected through the first fuse 20, the safety of the energy storage device can be improved.

Further, the energy storage device provided in the embodiment of the present disclosure may further include a first battery rack 310 and a second battery rack 320, where the first battery cluster 110 is disposed on the first battery rack 310; the second battery rack 320 is provided at one side of the first battery rack 310, and the second battery cluster 120 is provided at the second battery rack 320; wherein the first fuse 20 is connected to the first battery rack 310 and/or the second battery rack 320.

The following will describe each part of the energy storage device provided in the embodiments of the present disclosure in detail:

the first battery rack 310 is provided therein with a first accommodation compartment in which the first battery cluster 110 is disposed. The second battery rack 320 is provided therein with a second accommodation compartment in which the second battery cluster 120 is disposed. The first side surface of the first battery rack 310 is provided with a first accommodating space, and the first side surface of the first battery rack 310 is one surface of the first battery rack 310 facing the second battery rack 320; the second accommodating space is disposed on the first side of the second battery rack 320, and the first side of the second battery rack 320 is a surface of the second battery rack 320 facing the first battery rack 310.

The first accommodating space and the second accommodating space can be oppositely arranged, and at least part of the first accommodating space and the second accommodating space are coincided. The first fuse 20 is disposed in the first accommodating space and/or the second accommodating space. For example, the first fuse 20 is disposed in the first accommodating space, or the first fuse 20 is disposed in the second accommodating space, or the first fuse 20 is partially disposed in the first accommodating space, and the first fuse 20 is partially disposed in the second accommodating space.

As shown in fig. 2, the battery rack in the embodiment of the present disclosure includes: a top surface frame 301, a bottom surface frame 302, a plurality of columns 303, and an interlayer frame 304, the bottom surface frame 302 and the top surface frame 301 being disposed opposite to each other with a predetermined interval between the bottom surface frame 302 and the top surface frame 301; a plurality of posts 303 are disposed between the top shelf 301 and the bottom shelf 302; wherein, a first accommodation space is formed between the two pillars 303 located at the first side in the first battery frame 310, and a second accommodation space is formed between the two pillars 303 located at the first side in the second battery frame 320. The inter-floor frames 304 are located between the top and bottom frames 301 and 302, and the inter-floor frames 304 are connected to the columns 303.

The battery rack may have a frame structure, for example, the outline of the battery rack may have a rectangular or approximately rectangular structure. The battery rack may include a plurality of rack beams that form a rectangular parallelepiped frame. For example, the battery frame may include four top beams, four bottom beams and four pillars 303, where the four top beams are connected end to end in sequence to form a rectangular top frame 301, the four bottom beams are connected end to end in sequence to form a bottom frame 302, and the pillars 303 are disposed between the top frame 301 and the bottom frame 302.

The structures of the top surface frame 301 and the bottom surface frame 302 may be identical, and the top surface frame 301 and the bottom surface frame 302 are disposed opposite to each other, and the projection of the top surface frame 301 on the bottom surface in the vertical direction coincides with the bottom surface frame 302. Four pillars 303 are provided at four vertexes of the bottom frame 302, respectively, and the other ends of the pillars 303 are connected with vertexes of the top frame 301. A hollow structure is arranged between the vertical columns 303 in the battery frame, and the hollow structure can be used for accommodating the fuse.

The top frame 301, the columns 303 and the bottom frame 302 may be connected by welding, riveting or bolting. The upright 303 and the interlayer frame 304 may be connected by welding, riveting, bolting, or the like. In order to improve space utilization and facilitate installation alignment, grooves may be formed in the upright 303, and the inter-layer frame 304 may be partially embedded in the grooves in the upright 303.

The battery rack in the embodiment of the disclosure may be made of a metal material, for example, the material of the battery rack may be stainless steel, aluminum alloy, cast iron, copper, or the like. Wherein the material of the frame body and the material of the interlayer frame 304 in the battery frame may be the same, or the material of the frame body and the interlayer frame 304 may be different, which is not particularly limited in the embodiments of the present disclosure.

It should be noted that, in the embodiment of the present disclosure, the first battery rack 310 and the second battery rack 320 are configured as the battery racks described above. That is, the first battery rack 310 has the structures of the top rack 301, the bottom rack 302, the pillars 303, and the inter-layer racks 304 described above. The second battery holder 320 has the structures of the top-surface holder 301, the bottom-surface holder 302, the pillars 303, and the inter-layer holder 304 described above. In practical applications, the structures of the first battery rack 310 and the second battery rack 320 may be the same, or the first battery rack 310 and the second battery rack 320 are not completely the same, and the first battery rack 310 and the second battery rack 320 only need to have the upright posts 303 and the interlayer frames 304, which is not particularly limited in the embodiments of the disclosure.

In a possible embodiment, the first fuse 20 is connected to the pillar 303 of the first battery rack 310 and/or the pillar 303 of the second battery rack 320. That is, the first fuse 20 may be connected to the pillar 303 of the first battery rack 310 forming the first accommodating space; alternatively, the first fuse 20 may be connected to the pillar 303 of the second battery frame 320 forming the second receiving space; alternatively, the first fuse 20 may be connected to both the pillar 303 of the first battery frame 310 and the pillar 303 of the second battery frame 320.

The connection manner of the first fuse 20 and the pillar 303 may be a bolt connection, a welding, an adhesive connection, a riveting connection, or the like. When the first fuse 20 is connected to both the pillar 303 of the first battery holder 310 and the pillar 303 of the second battery holder 320, the two pillars 303 are aligned so that the surfaces of the two pillars 303 facing the side of the first fuse 20 are flush.

In another possible embodiment of the present disclosure, the first fuse 20 is connected to the inter-layer frame 304 of the first battery frame 310 and/or the inter-layer frame 304 of the second battery frame 320. That is, the first fuse 20 may be connected to the interlayer frame 304 of the first battery frame 310; either the first fuse 20 may be connected to the inter-layer frame 304 of the second battery frame 320, or the first fuse 20 may be connected to both the inter-layer frame 304 of the first battery frame 310 and the inter-layer frame 304 of the second battery frame 320.

The connection manner of the first fuse 20 and the inter-layer frame 304 may be bolting, welding, glue connection, riveting, or the like. When the first fuse 20 is simultaneously connected to the inter-layer frames 304 of the first battery frame 310 and the inter-layer frames 304 of the second battery frame 320, the two inter-layer frames 304 are arranged in layers such that the surfaces (upper surfaces) of the two layers facing the side of the first fuse 20 are flush.

In the embodiment of the present disclosure, the first battery cluster 110 includes a plurality of batteries, and the number of batteries in the first sub-battery cluster 111 is identical to the number of batteries in the second sub-battery cluster 112, that is, the fusing mechanism of the first battery cluster 110 is half-cluster fusing.

The battery may be of a rectangular or nearly rectangular configuration. For example, the battery may include two first surfaces disposed in parallel and four second surfaces surrounding the first surfaces, the first surfaces having an area larger than that of the second surfaces. The battery is arranged on the battery frame, and when the battery is arranged on the battery frame, the first surface of the battery is perpendicular to the vertical direction. That is, when a plurality of cells are stacked in a battery cluster, the large surfaces of the cells are disposed opposite to each other.

The battery provided by the embodiments of the present disclosure may be understood as a single battery, where the battery may include a battery housing and a battery cell, the battery housing having a cavity therein, and the battery cell being disposed in the cavity. Or the battery may be understood as a battery pack in the embodiments of the present disclosure, and the battery pack may include a case (an insertion case) and a plurality of unit cells integrated in the case to form the battery in the embodiments of the present disclosure.

The plurality of unit cells may be stacked in the battery case, and the plurality of unit cells may be connected (in series or in parallel) to each other, for example, the plurality of unit cells may be connected by a bus bar. An electrical connector may also be provided on the housing for connection to other batteries. The electric connector can be arranged on the side surface of the box body, which is away from the first side surface, and is respectively connected with the busbar of the box body and the conducting bar outside the box body.

In the case of manufacturing the energy storage device, a plurality of unit cells may be mounted in the case, and after the plurality of unit cells are electrically connected (in series or in parallel), the plurality of unit cells and the electrical connector may be connected. And then the box body is sealed to form a battery, and finally the battery is inserted into the battery compartment.

The first receiving compartment is partitioned into a plurality of first battery compartments by a plurality of inter-layer frames 304 in the first battery frame 310, and a plurality of batteries in the first battery cluster 110 are respectively placed in one first battery compartment. The first sub-battery cluster 111 may be the upper half of the cells in the first battery cluster 110, and the second sub-battery cluster 112 is the lower half of the cells in the first battery cluster 110. That is, the number of batteries in the first sub-battery cluster 111 and the second sub-battery cluster 112 is the same, however, in practical applications, the number of batteries in the first sub-battery cluster 111 and the second sub-battery cluster 112 may also be different, which is not specifically limited in the embodiments of the present disclosure.

In the first cell cluster 110, a first sub-cell cluster 111 and a second sub-cell cluster 112 are stacked, and a cell in the first sub-cell cluster 111 close to the second sub-cell cluster 112 is connected to the first fuse 20, and a cell in the second sub-cell cluster 112 close to the first sub-cell cluster 111 is connected to the first fuse 20.

The plurality of cells in the first sub-cell cluster 111 are connected in series, and the plurality of cells in the second sub-cell cluster 112 are connected in series. And the first sub-battery cluster 111 and the second sub-battery cluster 112 are connected in series through the first fuse 20. The first fuse 20 blows when the current in the first battery cluster 110 is excessive to protect the first battery cluster 110 from overcurrent.

An opening is provided on the outward side of the first battery compartment, and a battery is inserted into the first battery compartment from the opening of the first battery compartment. The battery is inserted along the length direction of the battery when the battery is inserted into the battery compartment. A fuse interface may be provided on a side of the battery exposed to the first battery compartment opening. The first fuse 20 is connected with a fuse interface.

In practical applications, the positive electrode interface and the negative electrode interface may be provided on a side of the battery that is exposed to the opening of the first battery compartment. Two adjacent cells in the first cell cluster 110 are connected in series, and the connection in series can be realized by connecting electrode interfaces of the adjacent cells through conductive members. At this time, the fuse interface may function as an electrode interface on the battery end face.

The second battery cluster 120 includes a third sub-battery cluster including at least one battery and a fourth sub-battery cluster including at least one battery. On this basis, the battery device provided by the embodiment of the present disclosure further includes a second fuse disposed between the first battery cluster 110 and the second battery cluster 120, and the second fuse electrically connects the third sub-battery cluster and the fourth sub-battery cluster.

The second fuse is arranged in the first accommodating space and/or the second accommodating space. And the first fuse 20 and the second fuse are disposed in a staggered manner. For example, the second fuse is disposed in the first accommodating space, or the second fuse is disposed in the second accommodating space, or the second fuse is partially disposed in the first accommodating space, and the second fuse is partially disposed in the second accommodating space.

In a possible embodiment, the second fuse is connected to the post 303 of the first battery rack 310 and/or the post 303 of the second battery rack 320. That is, the second fuse may be connected to the pillar 303 of the first battery rack 310 forming the first receiving space; alternatively, the second fuse may be connected to the pillar 303 of the second battery frame 320 forming the second receiving space; alternatively, the second fuse may be connected to both the pillar 303 of the first battery frame 310 and the pillar 303 of the second battery frame 320.

The connection manner of the second fuse and the upright 303 may be a bolt connection, a welding, an adhesive connection, a riveting connection, or the like. When the second fuse is connected to both the pillar 303 of the first battery holder 310 and the pillar 303 of the second battery holder 320, the two pillars 303 are aligned so that the surfaces of the two pillars 303 facing the side of the second fuse are flush.

In another possible embodiment of the present disclosure, the second fuse is connected to the inter-layer frame 304 of the first battery frame 310 and/or the inter-layer frame 304 of the second battery frame 320. That is, the second fuse may be connected to the interlayer frame 304 of the first battery frame 310; the second fuse may be connected to the inter-layer frame 304 of the second battery frame 320, or the second fuse may be connected to both the inter-layer frame 304 of the first battery frame 310 and the inter-layer frame 304 of the second battery frame 320.

The connection manner of the second fuse and the interlayer frame 304 may be a bolt connection, a welding, an adhesive connection, a riveting connection, or the like. When the second fuse is simultaneously connected to the inter-layer frame 304 of the first battery frame 310 and the inter-layer frame 304 of the second battery frame 320, the two inter-layer frames 304 are arranged in layers such that the surfaces (upper surfaces) of the two layers facing the side of the second fuse are flush.

In the embodiment of the present disclosure, the second battery cluster 120 includes a plurality of batteries, and the number of batteries in the third sub-battery cluster is identical to the number of batteries in the fourth sub-battery cluster, that is, the fusing mechanism of the second battery cluster 120 is half-cluster fusing.

The second accommodating compartment is partitioned into a plurality of second battery compartments by a plurality of inter-layer frames 304 in the second battery frame 320, and a plurality of batteries in the second battery cluster 120 are respectively placed in one second battery compartment. The third sub-battery cluster may be the upper half of the cells in the second battery cluster 120, and the fourth sub-battery cluster is the lower half of the cells in the second battery cluster 120. That is, the number of batteries in the third sub-battery cluster and the fourth sub-battery cluster is the same, however, in practical applications, the number of batteries in the third sub-battery cluster and the fourth sub-battery cluster may also be different, which is not specifically limited in the embodiments of the present disclosure.

In the second battery cluster 120, a third sub-battery cluster and a fourth sub-battery cluster are stacked, a battery close to the fourth sub-battery cluster in the third sub-battery cluster is connected with the second fuse, and a battery close to the third sub-battery cluster in the fourth sub-battery cluster is connected with the second fuse.

The plurality of cells in the third sub-cell cluster are connected in series, and the plurality of cells in the fourth sub-cell cluster are connected in series. And the third sub-battery cluster and the fourth sub-battery cluster are connected in series through a second fuse. The second fuse blows when the current in the second battery cluster 120 is excessive to protect the second battery cluster 120 from overcurrent.

The second battery compartment is provided with an opening on an outward facing side thereof, from which opening the battery is inserted into the second battery compartment. The battery is inserted along the length direction of the battery when the battery is inserted into the battery compartment. A fuse interface may be provided on a side of the battery exposed to the second battery compartment opening. The second fuse is connected with a fuse interface.

In practical applications, the positive electrode interface and the negative electrode interface may be provided on a side of the battery that is exposed to the opening of the second battery compartment. Two adjacent cells in the second cell cluster 120 are connected in series, and the connection in series can be realized by connecting electrode interfaces of the adjacent cells through conductive members. At this time, the fuse interface may function as an electrode interface on the battery end face.

It should be noted that the first battery cluster 110 and the second battery cluster 120 in the embodiments of the present disclosure are merely exemplary illustrations of two adjacent battery clusters in the plurality of battery clusters in the energy storage device, and are not intended to represent only two battery clusters in the energy storage device in the embodiments of the present disclosure.

When the energy storage device provided by the embodiment of the disclosure is an energy storage container, the energy storage device can further comprise a container body, and the battery rack, the battery cluster, the fuse and the like can be arranged inside the container body. Of course, in practical application, the energy storage device may also be an energy storage device such as an energy storage station, and the embodiment of the disclosure is not limited thereto.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any adaptations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

Claims

1. An energy storage device, the energy storage device comprising:

the first battery rack is arranged in a cluster mode, a first accommodating space is formed in the first side face of the first battery rack, and the first side face of the first battery rack is one face, facing the second battery rack, of the first battery rack;

the second battery rack is arranged on one side of the first battery rack, the second battery clusters are arranged on the second battery rack, a second accommodating space is formed in the first side face of the second battery rack, and the first side face of the second battery rack is one face of the second battery rack facing the first battery rack;

the first fuse is electrically connected with the first sub-battery cluster and the second sub-battery cluster, the first fuse is connected with the first battery rack and/or the second battery rack, and the first fuse is arranged in the first accommodating space and/or the second accommodating space.

2. The energy storage device of claim 1, wherein the battery rack comprises:

a top surface frame;

the bottom surface frame and the top surface frame are oppositely arranged, and a preset interval is arranged between the bottom surface frame and the top surface frame;

the upright posts are arranged between the top surface frame and the bottom surface frame;

wherein, form first accommodation space between two stands that lie in first side in first battery frame, form the second accommodation space between two stands that lie in first side in second battery frame.

3. The energy storage device of claim 2, wherein the first fuse is connected to a post of the first battery rack and/or a post of the second battery rack.

4. The energy storage device of claim 2, wherein said battery rack further comprises an inter-layer rack, said inter-layer rack being located between said top and bottom racks, and said inter-layer rack being connected to said post;

the first fuse is connected to an inter-layer frame of the first battery frame and/or an inter-layer frame of the second battery frame.

5. The energy storage device of claim 1, wherein the first sub-cell cluster and the second sub-cell cluster are stacked, wherein cells of the first sub-cell cluster adjacent to the second sub-cell cluster are connected to the first fuse, and wherein cells of the second sub-cell cluster adjacent to the first sub-cell cluster are connected to the first fuse.

6. The energy storage device of claim 5, wherein said first sub-cluster and said second sub-cluster are connected in series through said first fuse.

7. The energy storage device of claim 1, wherein the second cluster of cells comprises a third cluster of sub-cells comprising at least one cell and a fourth cluster of sub-cells comprising at least one cell;

the energy storage device further includes:

and the second fuse is arranged between the first battery cluster and the second battery cluster, and the second fuse is electrically connected with the third sub-battery cluster and the fourth sub-battery cluster.

8. The energy storage device of any of claims 1-7, wherein the number of cells in the first sub-cluster is the same as the number of cells in the second sub-cluster.