Battery cluster and energy storage equipment with same

Abstract

The utility model discloses a battery cluster and an energy storage device with the same, the battery cluster comprises a plurality of battery packs which are stacked up and down; and the high-voltage box electrical module is integrated in the box body of one of the battery packs. According to the battery cluster disclosed by the utility model, the high-voltage box electrical module is integrated in the box body of one battery pack, so that the use of a high-voltage box protective shell can be eliminated, the overall cost of the battery cluster can be further reduced, and meanwhile, the space proportion of the high-voltage box on the height of the battery cluster can also be reduced; the space utilization rate of the energy storage equipment can be improved, and the energy density of the energy storage equipment is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a battery cluster and an energy storage device having the same. Background Art

[0002] Existing energy storage battery packs usually require multiple battery packs to be stacked to form a battery cluster with a larger capacity. Each battery cluster requires a corresponding high-voltage box, which usually occupies a certain amount of space, resulting in low space utilization of the battery cluster. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a battery cluster, which can reduce the overall production cost and improve the space utilization and energy density of the energy storage device.

[0004] The utility model also provides an energy storage device having the battery cluster.

[0005] According to the first aspect of the utility model, the battery cluster comprises: a plurality of battery packs, which are stacked in an up-and-down direction; and a high-voltage box electrical module, which is integrated in the box of one of the battery packs.

[0006] According to the battery cluster of the utility model, by integrating the high-voltage box electrical module into the box of one of the battery packs, the use of the high-voltage box protective shell can be eliminated, thereby reducing the overall cost of the battery cluster. At the same time, the space occupied by the high-voltage box in the height of the battery cluster can be reduced, thereby improving the space utilization rate of the energy storage device and improving the energy density of the energy storage device.

[0007] According to some embodiments of the utility model, one of the multiple battery packs is a first battery pack, an electrical cavity is formed in the box body of the first battery pack, the electrical cavity is arranged at one end of the box body, and the high-voltage box electrical module is arranged in the electrical cavity.

[0008] According to some embodiments of the present invention, the first battery pack is disposed at the uppermost side of the plurality of battery packs.

[0009] According to some embodiments of the utility model, the box body of the battery pack defines a cavity which is open at the top and the bottom, a battery cell is arranged in the cavity, and the boxes of two adjacent battery packs are connected, and the battery cluster further includes: two end plates, the two end plates are respectively arranged on both sides of the multiple battery packs in the first direction; and multiple cold plates, the cold plates are arranged between two adjacent battery packs and / or between the battery pack and the end plates.

[0010] According to some embodiments of the present invention, the plurality of cold plates include: a first cold plate, which is disposed between two adjacent battery packs, and both side surfaces of the first cold plate in the thickness direction are respectively in contact with the two adjacent battery packs for heat exchange; and / or, a second cold plate, which is disposed between the end plate and the battery pack.

[0011] According to some embodiments of the present invention, the first cold plate is formed as a flat aluminum extruded profile cold plate; and / or the second cold plate is formed as a U-shaped aluminum extruded flat tube.

[0012] According to some embodiments of the present invention, a water inlet joint and a water outlet joint are provided on the box body of one of the multiple battery packs, and the water inlets and water outlets of the multiple cold plates are respectively connected to the water inlet joint and the water outlet joint.

[0013] According to some embodiments of the present invention, an explosion-proof valve is provided on the box of one of the multiple battery packs, and the cavities of the multiple battery packs are all connected to the explosion-proof valve.

[0014] According to some embodiments of the utility model, the high-voltage box electrical module and the water inlet connector and the water outlet connector are arranged in two different battery packs; and / or the explosion-proof valve and the water inlet connector and the water outlet connector are arranged in the same battery pack.

[0015] The energy storage device according to the second aspect of the utility model comprises a cabinet and a battery cluster according to the first aspect of the utility model, wherein the battery cluster is arranged in the cabinet.

[0016] According to the energy storage device of the utility model, the overall performance of the energy storage device is improved by providing the battery cluster of the first aspect.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of a battery cluster according to an embodiment of the utility model;

[0019] Figure 2 is an exploded view of a battery cluster according to an embodiment of the utility model;

[0020] Figure 3 is a schematic diagram of a battery cluster according to an embodiment of the utility model from another angle;

[0021] Figure 4 is along Figure 3 A cross-sectional view along line AA is shown in FIG.

[0022] Reference numerals:

[0023] 100. Battery cluster;

[0024] 10. battery pack; 10a. first battery pack; 11. housing; 12. battery cell; 13. electrical chamber;

[0025] 20. High voltage box electrical module;

[0026] 30. End plate;

[0027] 40. cold plate; 41. first cold plate; 42. second cold plate;

[0028] 50. Explosion-proof valve. DETAILED DESCRIPTION

[0029] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0030] Reference below Figure 1-Figure 4 A battery cluster 100 according to an embodiment of a first aspect of the present invention is described.

[0031] like Figure 1-Figure 2 As shown, the battery cluster 100 according to the first embodiment of the utility model includes: multiple battery packs 10 and a high-voltage box electrical module 20, the multiple battery packs 10 are stacked in the up and down direction; the high-voltage box electrical module 20 is integrated in the box 11 of one of the battery packs 10.

[0032] Specifically, multiple battery packs 10 are stacked up and down and connected in series to form high voltage, thereby forming an energy unit; the high-voltage box high-voltage box electrical module 20 is mainly used to collect the voltage and current in the multiple battery packs 10, and can control and protect the battery cluster 100.

[0033] In the prior art, the high-voltage box electrical module is generally integrated in the high-voltage box protective shell and arranged on the top or bottom of multiple battery packs. As a result, the high-voltage box will occupy a certain space in the height direction of the battery cluster, reducing the space utilization of the energy storage device.

[0034] In the embodiment of the utility model, the high-voltage box electrical module 20 is integrated in the box 11 of one of the battery packs 10. Therefore, compared with the prior art, the battery cluster 100 in the embodiment of the utility model cancels the high-voltage box protective shell, reduces the space occupied by the high-voltage box at the height of the battery cluster 100, and thus can reduce the overall cost of the battery cluster 100; in addition, when the cabinet height of the energy storage device is certain, more battery clusters 100 can be arranged. For example, the battery pack 10 includes three, and the cabinet is a 20-foot container. Then, three battery clusters 100 in this embodiment can be arranged in the height direction of the cabinet. Compared with the original eight-layer battery pack 10, one more layer can be placed, thereby improving the energy density of the energy storage device.

[0035] According to the battery cluster 100 of the embodiment of the utility model, by integrating the high-voltage box electrical module 20 into the box body 11 of one of the battery packs 10, the use of the high-voltage box protective shell can be eliminated, thereby reducing the overall cost of the battery cluster 100. At the same time, the space occupied by the high-voltage box at the height of the battery cluster 100 can also be reduced, thereby improving the space utilization rate of the energy storage device and improving the energy density of the energy storage device.

[0036] According to some embodiments of the present invention, Figure 1-Figure 2 As shown, one of the multiple battery packs 10 is a first battery pack 10a, and an electrical cavity 13 is formed in the box body 11 of the first battery pack 10a. The electrical cavity 13 is arranged at one end of the box body 11, and the high-voltage box electrical module 20 is arranged in the electrical cavity 13. In this way, the integration of the high-voltage box electrical module 20 can be improved, which is conducive to the maintenance and replacement of the high-voltage box electrical module 20.

[0037] According to some embodiments of the present invention, the first battery pack 10a is disposed at the uppermost side of the plurality of battery packs 10. Thus, when the high-voltage box electrical module 20 needs to be repaired, only the first battery pack 10a can be removed, thereby reducing the repair time, increasing the repair rate, and reducing the repair cost.

[0038] According to some embodiments of the present invention, Figure 1-Figure 2As shown, the box 11 of the battery pack 10 defines a cavity with both the top and the bottom open, and a battery cell 12 is arranged in the cavity. The boxes 11 of two adjacent battery packs 10 are connected, and the battery cluster 100 also includes: two end plates 30 and a plurality of cold plates 40. The two end plates 30 are respectively arranged on both sides of the plurality of battery packs 10 in the first direction; the cold plate 40 is arranged between two adjacent battery packs 10 and / or between the battery pack 10 and the end plates 30. After the plurality of battery packs 10 are stacked, the two end plates 30 respectively cover the open sides of the stacked battery packs 10, so that the battery cluster 100 is in a sealed state, effectively preventing dust and other impurities from entering the battery cluster 100 to damage the components inside the battery cluster 100, thereby improving the safety of the battery cluster 100; the plurality of cold plates 40 are respectively arranged between the two connected battery packs 10 and between the battery pack 10 and the end plates 30, and are used to exchange heat with the battery pack 10 to ensure the safety of the battery cluster 100.

[0039] According to some embodiments of the present invention, Figure 2 As shown, the plurality of cold plates 40 include: a first cold plate 41, the first cold plate 41 is disposed between two adjacent battery packs 10, and both side surfaces of the first cold plate 41 in the thickness direction are in contact with the two adjacent battery packs 10 for heat exchange. In other words, one first cold plate 41 can be used to exchange heat between two battery packs 10, so that the number of first cold plates 41 used can be reduced, thereby reducing the overall cost of the battery cluster 100.

[0040] In the prior art, two cold plates are included between two adjacent battery packs, which are used for heat exchange at the bottom of the upper battery pack and at the top of the lower battery pack. However, in this embodiment, only one first cold plate 41 is included between the two battery packs 10. Therefore, compared with the prior art, one cold plate 40 is eliminated between the two adjacent battery packs 10 in this embodiment, and the battery packs 10 in this embodiment include multiple cold plates. If the number of battery packs 10 is N, then (N-1) cold plates 40 in this embodiment are eliminated. For example, if the number of battery packs 10 is three, then two cold plates 40 in this embodiment are eliminated. Therefore, the cost of the battery cluster 100 in this embodiment is reduced, and the overall height is also reduced.

[0041] According to some embodiments of the present invention, Figure 2 As shown, the multiple cold plates 40 include: a second cold plate 42, which is arranged between the end plate 30 and the battery pack 10, and is used to exchange heat with the top and bottom battery packs 10 to ensure the heat exchange effect of the top and bottom battery packs 10; at the same time, the first cold plate 41 and the second cold plate 42 work together to ensure that heat exchange can be performed on both the upper and lower sides of the battery pack 10, thereby further improving the heat exchange effect of the battery pack 10 and improving the safety of the battery cluster 100.

[0042] According to some embodiments of the present invention, the first cold plate 41 is formed as a planar aluminum extruded profile cold plate 40, wherein the aluminum extruded profile cold plate 40 is light in weight, has high structural strength and good thermal conductivity. Therefore, the first cold plate 41 is formed as a planar aluminum extruded profile cold plate 40, which can reduce the overall weight of the first cold plate 41 and make the battery cluster 100 lighter. At the same time, the thermal conductivity of the first cold plate 41 can be improved, thereby enhancing the heat exchange effect of the battery cluster 100 and improving the safety of the battery cluster 100.

[0043] According to some embodiments of the present invention, the second cold plate 42 is formed as a U-shaped aluminum extruded tube. The U-shaped aluminum extruded tube is simple to manufacture and has low cost. Therefore, the second cold plate 42 is formed as a U-shaped aluminum extruded tube, which can reduce the production cost of the second cold plate 42 and the production cost of the entire battery cluster 100.

[0044] According to some embodiments of the utility model, a water inlet joint and a water outlet joint are provided on the box body 11 of one of the multiple battery packs 10, and the water inlets and water outlets of the multiple cold plates 40 are connected to the water inlet joint and the water outlet joint respectively. It can be understood that heat exchange medium is provided to the multiple cold plates 40 through a water inlet joint, and when the heat exchange of the multiple cold plates 40 is completed, the liquid after heat exchange is discharged through a water outlet joint, so that the number of water inlet joints and water outlet joints used can be reduced, thereby reducing the cost and occupied space of the battery cluster 100.

[0045] According to some embodiments of the present invention, Figure 1-Figure 2 As shown, an explosion-proof valve 50 is provided on the box 11 of one of the multiple battery packs 10, and the cavities of the multiple battery packs 10 are all connected to the explosion-proof valve 50. In this way, when thermal runaway occurs inside the multiple battery packs 10, the gas generated by the thermal runaway can be transferred to the explosion-proof valve 50 through the cavity, and then discharged through the explosion-proof valve 50. Therefore, while ensuring the safety of the battery cluster 100, the number of explosion-proof valves 50 used can be reduced, and the overall cost of the battery cluster 100 can be further reduced.

[0046] According to some embodiments of the utility model, the high-voltage box electrical module 20 and the water inlet joint and the water outlet joint are arranged in two different battery packs 10. In this way, the damage of the high-voltage box electrical module 20 caused by leakage of the water inlet joint or the water outlet joint can be effectively avoided, thereby improving the safety of the use of the high-voltage box electrical module 20. At the same time, a plurality of high-voltage joints are also required to be arranged on the battery pack case 11 corresponding to the high-voltage box electrical module 20. Therefore, the high-voltage box electrical module 20 and the water inlet joint and the water outlet joint are arranged in two different battery packs 10, which is beneficial to the rationality of the layout of the battery cluster 100 and reduces the difficulty of assembling the battery cluster 100.

[0047] According to some embodiments of the present invention, the explosion-proof valve 50 and the water inlet and outlet joints are arranged in the same battery pack 10. That is, the explosion-proof valve 50 and the high-voltage box electrical module 20 are arranged in two different battery packs 10, so that the high-temperature and high-pressure substances can be effectively prevented from damaging the high-voltage box electrical module 20, thereby ensuring the safety of the use of the high-voltage box electrical module 20.

[0048] The energy storage device according to the second embodiment of the utility model comprises a cabinet and a battery cluster 100 according to the first embodiment of the utility model, wherein the battery cluster 100 is arranged in the cabinet.

[0049] According to the energy storage device of the embodiment of the utility model, the overall performance of the energy storage device is improved by providing the battery cluster 100 of the embodiment of the first aspect.

[0050] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0051] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0052] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0053] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0054] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A battery cluster, characterized in that: include: A plurality of battery packs, wherein the plurality of battery packs are stacked in an up-and-down direction; A high-voltage box electrical module is integrated into a box of one of the battery packs.

2. The battery cluster according to claim 1, characterized in that: One of the multiple battery packs is a first battery pack. An electrical cavity is formed in a box of the first battery pack. The electrical cavity is arranged at one end of the box. The high-voltage box electrical module is arranged in the electrical cavity.

3. The battery cluster according to claim 2, characterized in that: The first battery pack is disposed on the uppermost side of the plurality of battery packs.

4. The battery cluster according to any one of claims 1 to 3, characterized in that: The box of the battery pack defines a cavity with both the top and the bottom open, a battery cell is arranged in the cavity, two adjacent boxes of the battery pack are connected, and the battery cluster further includes: Two end plates, the two end plates are respectively arranged on both sides of the plurality of battery packs in the first direction; A plurality of cold plates are provided between two adjacent battery packs and / or between the battery pack and the end plate.

5. The battery cluster according to claim 4, characterized in that: The plurality of cold plates include: a first cold plate, the first cold plate being disposed between two adjacent battery packs, and both side surfaces of the first cold plate in a thickness direction respectively contacting with the two adjacent battery packs for heat exchange; and / or, A second cold plate is disposed between the end plate and the battery pack.

6. The battery cluster according to claim 5, characterized in that: The first cold plate is formed as a flat aluminum extruded profile cold plate; and / or the second cold plate is formed as a U-shaped aluminum extruded flat tube.

7. The battery cluster according to claim 4, characterized in that: A water inlet joint and a water outlet joint are provided on the box body of one of the plurality of battery packs, and the water inlets and water outlets of the plurality of cold plates are connected to the water inlet joint and the water outlet joint respectively.

8. The battery cluster according to claim 7, characterized in that: An explosion-proof valve is provided on the box body of one of the multiple battery packs, and the cavities of the multiple battery packs are all connected to the explosion-proof valve.

9. The battery cluster according to claim 8, characterized in that: The high-voltage box electrical module and the water inlet joint and the water outlet joint are arranged in two different battery packs; and / or the explosion-proof valve and the water inlet joint and the water outlet joint are arranged in the same battery pack.

10. An energy storage device, characterized in that: The invention comprises a cabinet and a battery cluster according to any one of claims 1 to 9, wherein the battery cluster is arranged in the cabinet.

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