Battery cluster

Abstract

The utility model discloses a battery cluster, which comprises a box body, a plurality of battery cells and a plurality of battery cells, the battery pack comprises a plurality of battery packs, the battery packs in each accommodating area are stacked in the height direction, each battery pack comprises a base, an assembly area is formed on the base, and an exhaust part communicated with the atmosphere is formed at the bottom of the assembly area; the battery modules are arranged in the assembly area, each battery module is provided with a plurality of single batteries, and an anti-explosion valve of each single battery is communicated with the exhaust part. According to the battery cluster disclosed by the utility model, a large number of battery packs can be effectively organized and managed, the space utilization rate of the battery cluster is high, the number of the battery packs is small, the charging capacity is large, the production cost is reduced, the exhaust part formed at the bottom of the assembly area is communicated with the atmosphere, the danger coefficient of the battery cluster is reduced, and the safety of the battery cluster is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery manufacturing technical field especially is related to a battery cluster. BACKGROUND

[0002] The related art points out that the current standard 20 feet energy storage container system, the voltage platform is basically 1500V, the length, depth and height size is: 6058mm*2438mm*2896mm, in order to reduce the floor area, the container usually adopts single side door, the current 20 feet energy storage container system uses the electric core for 314Ah, and the system charging capacity is about 5MWh, in order to reduce the system cost, the next generation energy storage electric core is upgraded to large capacity, the capacity is 500Ah+, and various manufacturers bloom, the size capacity is different, but the 587Ah (size: 275*73*215mm) and 625Ah (size 470*182*54mm, thermal and electric separation design) electric core proposed by several leading manufacturers are concerned and followed by the industry, when the voltage platform is raised, the system loss can be reduced, the system efficiency is improved, the prefabricated cabin system cost is reduced, and then greater benefits can be brought to users, so the next generation prefabricated cabin system product also has the trend of evolving iteration to 2000V high voltage platform. The battery cluster string number of 1500V system needs to be less than or equal to 416S, and the battery cluster string number of 2000V system needs to be less than or equal to 555S, a 20 feet energy storage container system usually needs several to dozens of battery packs, and high-voltage sockets, communication interfaces, cooling liquid inlet and outlet interfaces, explosion-proof valves, MSDs, PACK level fire extinguishing control interfaces and other components need to be arranged on a single battery pack, the higher the volume utilization rate of a single battery pack, the greater the charging capacity, which can further reduce the number of battery packs and battery clusters to reduce the system cost.

[0003] 1. 20 feet energy storage container system is made of 587Ah, 4 columns and 8 layers are arranged, 8 battery clusters are arranged, a total of 32 battery packs are arranged, the system charging capacity is 6.25MWh, the number of battery packs used is large, the voltage platform is 1500V, if the system is upgraded to 2000V, the number of electric core strings and the arrangement in the PACK battery pack change greatly, and the PACK battery pack cannot be compatible by simple upgrading, the PACK battery pack needs to be developed again, and the development cost is high.

[0004] 2. Safety is the cornerstone of the energy storage system, the thermal and electric separation design can improve the battery pack short circuit arc problem and reduce the risk of battery pack thermal runaway fire, and the large PACK battery pack based on the next generation energy storage electric core design is not the thermal and electric separation design. UTILITY MODEL CONTENTS

[0005] The utility model aims at solving one of the technical problems in the prior art. To this end, the utility model provides a battery cluster, which has low production cost and high safety factor.

[0006] The battery cluster according to the utility model discloses, including: box, form multiple containment area in the box, battery pack, the battery pack includes multiple, each containment area is equipped with multiple battery pack in, and the battery pack in each containment area is stacked along the height direction arrangement, the battery pack includes: base, form the assembly area of base, the bottom of assembly area forms the exhaust part that communicates with atmosphere, battery module, the battery module includes multiple, multiple battery module all are located in the assembly area, each battery module has multiple battery monomer, multiple battery monomer all arrange along the thickness direction, each battery monomer's explosion -proof valve all communicate with exhaust part.

[0007] The battery cluster according to the utility model discloses, by placing multiple battery packs in containment area, can effectively organize and manage a large number of battery packs, the space utilization of battery cluster is high, and the number of battery packs is less, and the charge capacity is large, reduces production cost, and the exhaust part formed in the bottom of assembly area communicates with atmosphere, reduces the risk coefficient of battery cluster, improves the safety of battery cluster.

[0008] In some embodiments, the containment area includes four arranged along the length direction, each containment area includes four battery packs stacked along the height direction.

[0009] In some embodiments, the assembly area includes six arranged along the width direction of the base, each assembly area extends along the length direction of the base, and the battery modules are one-to-one corresponding to the assembly areas.

[0010] In some embodiments, the length of the battery pack is not greater than 2150mm, the width of the battery pack is not greater than 1200mm, and the height of the battery pack is not greater than 500mm.

[0011] In some embodiments, the containment area includes three arranged along the length direction, each containment area includes four battery packs stacked along the height direction.

[0012] In some embodiments, the assembly area includes eight arranged along the width direction of the base, each assembly area extends along the length direction of the base, and the battery modules are one-to-one corresponding to the assembly areas.

[0013] In some embodiments, the length of the battery pack is not greater than 2150mm, the width of the battery pack is not greater than 1600mm, and the height of the battery pack is not greater than 500mm.

[0014] In some embodiments, at least one cold plate is arranged between every two adjacent battery modules; and / or, one cold plate is arranged on each side of the battery pack base in the width direction of the battery pack base.

[0015] In some embodiments, a spacer is arranged between every two adjacent battery cells, and the thickness of the spacer is not less than 2.5 mm.

[0016] In some embodiments, the length of each battery cell is 470 mm, the height of each battery cell is 182 mm, and the thickness of each battery cell is 54 mm.

[0017] Additional aspects and advantages of the present application will be partially given in the following description, partially will become obvious from the following description, or will be understood by the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a schematic view of a battery cluster according to one embodiment of the present application;

[0019] Figure 2 is Figure 1 is a schematic view of the battery cluster from another angle shown in FIG.

[0020] Figure 3 is Figure 1 is a schematic view of a battery pack shown in FIG.

[0021] Figure 4 is Figure 3 is a schematic view of the battery pack from another angle shown in FIG.

[0022] Figure 5 is Figure 3 is a schematic view of the battery pack from another angle shown in FIG.

[0023] Figure 6 is Figure 3 is a schematic view of the cold plate and the base of the battery pack shown in FIG.

[0024] Figure 7 is Figure 3 is a schematic view of the base of the battery pack shown in FIG.

[0025] Figure 8 is a schematic view of a battery cluster according to another embodiment of the present application;

[0026] Figure 9 is Figure 8 is a schematic view of the battery cluster from another angle shown in FIG.

[0027] Figure 10 is Figure 8 is a schematic view of the battery pack shown in FIG.

[0028] Figure 11 yes Figure 8 This is a schematic diagram of the battery pack from another angle.

[0029] Figure label:

[0030] 100. Battery cluster; 1. Battery pack; 11. Base; 111. Exhaust unit; 12. Battery module; 121. Battery cell; 13. Cold plate; 2. Housing; 21. Storage area; 3. Fire-fighting device; 4. Liquid chiller. Detailed Implementation

[0031] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0032] The following is for reference. Figures 1-11 A battery cluster 100 according to an embodiment of the present utility model is described.

[0033] like Figure 1 and Figure 8 As shown, the battery cluster 100 according to an embodiment of the present invention includes: a housing 2 and a battery pack 1.

[0034] Specifically, the housing 2 has multiple receiving areas 21, and the battery pack 1 includes multiple battery packs. Each receiving area 21 has multiple battery packs 1, and the battery packs 1 in each receiving area 21 are stacked along the height direction. Each battery pack 1 includes a base 11 and a battery module 12. The base 11 has an assembly area, and the bottom of the assembly area has an exhaust vent 111 that communicates with the atmosphere. The battery module 12 includes multiple battery modules 12, and the multiple battery modules 12 are all located in the assembly area. Each battery module 12 has multiple battery cells 121, and the multiple battery cells 121 are arranged along the thickness direction. The explosion-proof valve of each battery cell 121 is connected to the exhaust vent 111.

[0035] It can be understood that by arranging multiple accommodating areas 21 in the box 2, a large number of battery packs 1 can be effectively organized and managed, which not only helps to improve the space utilization, but also facilitates the maintenance and replacement of the batteries; the battery packs 1 in each accommodating area 21 are arranged in a stacked manner along the height direction, which can make full use of the vertical space, reduce the floor area, and facilitate the air circulation between the battery packs 1, thereby promoting heat dissipation; the base 11 provides a stable mounting platform for the battery modules 12, facilitating the assembly and disassembly of the battery cluster 100; the exhaust portion 111 formed at the bottom of the assembly area is in communication with the atmosphere, and when the battery monomer 121 is abnormal (for example, overheating or excessive internal pressure), the explosion-proof valve is opened, and the high-temperature and high-pressure gas in the battery monomer 121 is directly discharged to the outside through the exhaust portion 111, thereby avoiding the risk of explosion caused by excessive internal pressure and improving the safety of the system.

[0036] In addition, the base 11 of the battery pack 1 is flexible and expandable, and can be applied to various battery packs 1 with different numbers of battery modules 12, thereby reducing the production cost.

[0037] According to the battery cluster 100 of the embodiment of the utility model, by placing multiple battery packs 1 in the accommodating areas 21, a large number of battery packs 1 can be effectively organized and managed, the space utilization of the battery cluster 100 is high, the number of battery packs 1 is small, the charging capacity is large, the production cost is reduced, the exhaust portion 111 formed at the bottom of the assembly area is in communication with the atmosphere, the risk coefficient of the battery cluster 100 is reduced, and the safety of the battery cluster 100 is improved.

[0038] In some embodiments of the utility model, as shown in Figures 1-7 It can be understood that when the battery cluster 100 is a 1500V system, the battery packs 1 in the battery cluster 100 adopt a four-column four-layer arrangement, at this time the system capacity in the battery cluster 100 is 4*3*34*8*3.2*625=6.528 (MWh), and at this time the battery pack 1 includes six battery modules 12, the six battery modules 12 are arranged along the width direction of the base 11, each battery module 12 includes 34 battery monomers 121 arranged along the thickness direction of the battery monomer 121, and the battery pack 1 includes a total of 204 battery monomers 121, and the string number of the battery pack 1 is 204S.

[0039] Further, when the battery cluster 100 is a 1500V system, the length of the battery pack 1 is not greater than 2150mm, the width of the battery pack 1 is not greater than 1200mm, and the height of the battery pack 1 is not greater than 500mm. In this way, the space utilization inside the battery cluster 100 is ensured, and the safety and heat dissipation inside the battery cluster 100 are also ensured.

[0040] In some embodiments, as shown in FIG. 1, the battery cluster 100 includes a plurality of battery packs 1 arranged in a plurality of rows along the length direction of the battery cluster 100, and each battery pack 1 includes a plurality of battery modules 12 arranged in a plurality of columns along the width direction of the battery pack 1. Figures 8-11 As shown in FIG. 1, the accommodating area 21 includes three rows arranged along the length direction, each accommodating area 21 includes four battery packs 1 stacked along the height direction, the assembly area includes eight rows arranged along the width direction of the base 11, each assembly area extends along the length direction of the base 11, and the battery module 12 is arranged one-to-one corresponding to the assembly area. It can be understood that when the battery cluster 100 is a 2000V system, the battery pack 1 in the battery cluster 100 adopts a three-row four-layer arrangement, and at this time the system power in the battery cluster 100 is 4*4*34*6*3.2*625=6.528(MWh), and at this time the battery pack 1 includes eight battery modules 12, the eight battery modules 12 are arranged along the width direction of the base 11, each battery module 12 includes 34 battery monomers 121 arranged along the thickness direction of the battery monomer 121, there are a total of 272 battery monomers 121 in the battery pack 1, and the battery pack 1 has 272S in series.

[0041] Further, when the battery cluster 100 is a 2000V system, the length of the battery pack 1 is not greater than 2150mm, the width of the battery pack 1 is not greater than 1600mm, and the height of the battery pack 1 is not greater than 500mm. In this way, the space utilization inside the battery cluster 100 is ensured, and the safety and heat dissipation inside the battery cluster 100 are also ensured.

[0042] In some embodiments, when the battery cluster 100 is a 0.25P system (i.e., the maximum charge and discharge power is 0.25 times the battery capacity), at least one cold plate 13 is arranged between each adjacent two battery modules 12; when the battery cluster 100 is a 0.5P system (i.e., the maximum charge and discharge power is 0.5 times the battery capacity), one cold plate 13 is arranged on both sides of each battery module 12 in the width direction of the base 11 of the battery pack 1. In this way, good heat dissipation effect is ensured, and the 0.25P system: at least one cold plate 13 is arranged between each adjacent two battery modules 12, which helps to evenly dissipate heat and avoid local overheating; the 0.5P system: one cold plate 13 is arranged on both sides of each battery module 12 in the width direction of the base 11 of the battery pack 1, which further enhances the heat dissipation effect and ensures temperature control during high-power charging and discharging.

[0043] In some embodiments, in order to isolate the thermal runaway between two adjacent battery monomers 121, a partition is arranged between each two adjacent battery monomers 121, and the thickness of the partition is not less than 2.5 mm. For example, the thickness of the partition can be 2.5 mm, 2.6 mm, 2.7 mm, 2.8 mm, 2.9 mm, 3.0 mm, 3.1 mm, 3.2 mm, 3.3 mm, 3.4 mm, 3.5 mm, 3.6 mm, 3.7 mm, 3.8 mm, 3.9 mm, 4.0 mm, etc.

[0044] In some embodiments, the battery monomer 121 is a 624 Ah thermal-electric separation battery monomer, and the length of each battery monomer 121 is 470 mm, the height of each battery monomer 121 is 182 mm, and the thickness of each battery monomer 121 is 54 mm.

[0045] In some embodiments, due to the sufficient space inside the box 2, the PCS (energy storage converter) can be integrated, which reduces the circulating current between the battery clusters 100, improves the efficiency, increases the available power, and thus improves the product competitiveness.

[0046] Referring to Figure 1 and Figure 8 As shown in the figures, the box 2 is also provided with a fire extinguishing device 3 and a liquid cooling water machine 4 to ensure the safety performance of the battery cluster 100.

[0047] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0048] In addition, the terms "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0049] In the utility model, unless another definite provision and limitation, the term " install " " link " " connect " " fixed " and so on term should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electric connection, also can be communication;Can be direct connection, also can pass through intermediate medium indirectly connect, can be two element internal communication or two element's mutual action relationship. For ordinary skilled person in the art, can understand the concrete meaning of above-mentioned term in the utility model according to specific circumstances.

[0050] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" 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 present utility model. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples without contradiction.

[0051] Although the embodiments of the present utility model have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the present utility model, and the scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A battery cluster, characterized by, The application relates to a battery pack and a battery module. The application relates to a battery pack and a battery module. The application relates to a battery pack and a battery module. The application relates to a battery pack and a battery module. The application relates to a battery pack and a battery module.

2. The battery cluster of claim 1, wherein, The application relates to a battery pack and a battery module.

3. The battery cluster of claim 2, wherein, The application relates to a battery pack and a battery module.

4. The battery cluster of claim 3, wherein, The application relates to a battery pack and a battery module.

5. The battery cluster of claim 1, wherein, The application relates to a battery pack and a battery module.

6. The battery cluster of claim 5, wherein, The application relates to a battery pack and a battery module.

7. The battery cluster of claim 6, wherein, The application relates to a battery pack and a battery module.

8. The battery string of any one of claims 1-7, wherein, The application relates to a battery pack and a battery module.

9. The battery string of any one of claims 1-7, wherein, The application relates to a battery pack and a battery module.

10. The battery string of any one of claims 1-7, wherein, The application relates to a battery pack and a battery module. The application relates to a battery pack and a battery module. The application relates to a battery pack and a battery module. The application relates to a battery pack and a battery module. The application relates to a battery pack and a battery module. The application relates to a battery pack and a battery module. The application relates to a battery pack and a battery module. The application relates to a battery pack and a battery module. The application relates to a battery pack and a battery module. The application relates to a battery pack and a battery module. The application relates to a battery pack and a battery module. The application relates to a battery pack and a battery module. The application relates to a battery pack and a battery module. The application relates to a battery pack and a battery module. 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