A new energy storage battery pack and battery cluster

Abstract

The utility model relates to a novel energy storage battery PACK and battery cluster, including two groups of detain unit, and each group of detain unit includes a plurality of transverse arrangement's electric core, in each group of detain unit, the positive and negative pole of two electric cores transversely adjacent is reversely arranged, two groups of detain unit are along longitudinal parallel arrangement and fixed formation integral module, in two groups of detain unit of integral module, the positive and negative pole of two electric cores longitudinally adjacent is arranged in the same direction, in the similar side of two groups of detain unit, between two electric cores longitudinally adjacent through longitudinal wire and make the positive pole, negative pole correspond in series, in the opposite side of two groups of detain unit, between two electric cores transversely adjacent through transverse wire and make the positive pole, negative pole correspond in series, make circuit form zigzag and battery PACK's positive pole lead-out terminal, negative pole lead-out terminal are located its transverse both ends respectively. The utility model has enlarged the physical distance between battery PACK positive pole lead-out terminal, negative pole lead-out terminal, has improved battery system security.

Description

Technical Field

[0001] This utility model relates to the field of energy storage battery technology, and in particular to a novel energy storage battery PACK and battery cluster. Background Technology

[0002] A complete DC-side containerized energy storage unit consists of multiple battery clusters connected in parallel. A battery cluster is composed of multiple battery packs connected in series, a battery pack is composed of multiple battery modules connected in series, and a battery module is composed of multiple cells connected in series. The safety of the battery pack directly affects the safety of the entire battery system. Short circuits account for approximately 45% of battery system failures. In traditional battery systems, short circuits mainly occur at the positive and negative terminals of the battery pack, the connecting cables between battery packs, and the connection points of the battery cluster outlet cables.

[0003] The short distance between the positive and negative terminals of the battery pack makes it more prone to short circuits, as specifically demonstrated by: [See details] Figure 1 , Figure 1 Figures (a) and (b) show schematic diagrams of a battery pack consisting of a single battery module and two battery modules, respectively, in the prior art. In the battery module, multiple cells 101 are arranged horizontally and connected in series via inter-cell wires 3. In the battery pack, two adjacent battery modules are arranged vertically and connected in series via an inter-module wire 2. The positive terminal 5 and negative terminal 4 of the final battery pack are located on the same end face. Because the positive terminal 5 and negative terminal 4 are located on the same end face and are physically close, a short circuit is likely to occur. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this utility model provides a novel energy storage battery PACK and battery cluster, which solves the technical problem in the prior art where the physical distance between the positive and negative leads is short and they are located on the same side of the end plate due to the influence of the electrical connection form within the battery PACK, making it easy for short circuits to occur and resulting in poor battery system safety.

[0005] The technical solution adopted in this utility model is as follows: This utility model provides a novel energy storage battery PACK, including two sets of clamping units, each set of clamping units including multiple horizontally arranged cells; in each set of clamping units, the positive and negative terminals of two horizontally adjacent cells are arranged in opposite directions; the two sets of clamping units are arranged in parallel along the longitudinal direction and fixed to form an integral module; in the two sets of clamping units of the integral module, the positive and negative terminals of two vertically adjacent cells are arranged in the same direction. The overall module forms the battery pack after electrical connection, and the electrical connection structure is as follows: On the adjacent sides of the two sets of clamping units, the positive and negative terminals of two longitudinally adjacent cells are connected in series by longitudinal wires. On the opposite sides of the two sets of clamping units, the positive and negative terminals of two laterally adjacent cells are connected in series by lateral wires, so that the circuit forms a zigzag shape, and the positive and negative terminals of the battery PACK are located at its two lateral ends respectively.

[0006] The preferred technical solution is as follows: Prior to electrical connection, the cells in each clamping unit of the overall module are not connected to each other.

[0007] Before the electrical connection is made, the two sets of clamping units are not connected to each other in the overall module.

[0008] The two sets of clamping units have the same number of cells.

[0009] The multiple horizontally arranged battery cells in each set of clamping units are fixed together as a whole by clamping straps.

[0010] The two sets of restraint units are arranged in close contact along the longitudinal direction.

[0011] This utility model also provides a battery cluster, including the novel energy storage battery PACK.

[0012] As a further improvement to the above technical solution: The battery cluster consists of at least two battery packs stacked in layers and connected in series, with the positive and negative terminals of two adjacent battery packs arranged in opposite directions.

[0013] The technical solution of this utility model can achieve at least some of the following beneficial effects: This invention improves the battery pack's internal cell wiring structure, increasing the physical distance between the positive and negative terminals, thereby enhancing battery system safety. Specifically, it offers the following advantages: Before electrical connection, the cells within each clamping unit do not need to be connected in series. Instead, the wiring between cells within the clamping unit and between cells between units is performed simultaneously during the subsequent electrical connection process. This wiring method is more flexible and facilitates flexible assembly according to site conditions and actual needs.

[0014] After the two clamping units are fixed and clamped in parallel, they are electrically connected as a whole module, breaking the traditional electrical wiring approach of sequentially connecting the cells in a series within a battery pack. Inside the battery pack, the positive and negative terminals of the cells are connected in a zigzag electrical series in a horizontal-vertical-horizontal-vertical sequence, ultimately resulting in the positive and negative terminals being located at opposite ends of the battery pack. This increases the physical distance between the positive and negative terminals, resulting in better electrical insulation performance and increased electrical safety.

[0015] The improved battery pack is distinguished by positive and negative terminals, with the positive terminal marked as A and the negative terminal marked as B. Compared with the traditional battery pack, it has a clear classification distinction, which creates convenient conditions for the integrated assembly of battery clusters.

[0016] Other features and advantages of this invention will be set forth in the following description or may be learned by practicing this invention. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a battery pack in the prior art.

[0018] Figure 2 This is a top view schematic diagram of a single clamping unit structure according to an embodiment of the present utility model.

[0019] Figure 3 This is a top view of the structure of the battery pack after electrical connection according to an embodiment of the present invention.

[0020] Explanation of reference numerals in the attached diagram: 2. Module-to-module wire; 3. Cell-to-cell wire; 4. Negative lead-out terminal; 5. Positive lead-out terminal; 100. Clamping unit; 101. Cell; 102. Clamping strap; 103. Cell positive terminal; 104. Cell negative terminal; 105. Horizontal wire; 106. Vertical wire; 107. Positive lead-out terminal; 108. Negative lead-out terminal. Detailed Implementation

[0021] The specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0022] like Figure 2 and Figure 3 As shown, this embodiment provides a novel energy storage battery PACK, including two sets of clamping units 100. Each set of clamping units 100 includes multiple horizontally arranged cells 101. In each set of clamping units 100, the positive and negative electrodes of two horizontally adjacent cells 101 are arranged in opposite directions, that is: the positive electrode 103 and the negative electrode 104 of the first cell 101 are located on the left and right sides (upper and lower sides in the figure), respectively, and the positive electrode 103 and the negative electrode 104 of the second cell 101 are located on the right and left sides, respectively. Two sets of clamping units 100 are arranged in parallel along the longitudinal direction and fixed to form an integral module; in the two sets of clamping units 100 of the integral module, the positive and negative poles of two longitudinally adjacent cells 101 are arranged in the same direction, that is: in the first set of clamping units, the positive pole 103 and the negative pole 104 of the cell 101 are located on the left and right sides respectively, and the positive pole 103 and the negative pole 104 of the cell 101 adjacent to the second set of clamping units are also located on the left and right sides respectively; The overall module forms a battery pack after electrical connection, and the electrical connection structure is as follows: On the adjacent sides of the two sets of clamping units 100, the positive and negative terminals of two longitudinally adjacent cells 101 are connected in series by a longitudinal wire 106. On the opposite sides of the two sets of clamping units 100, the positive and negative terminals of two laterally adjacent cells 101 are connected in series by a transverse wire 105. The circuit is formed in a zigzag pattern by alternating transverse and longitudinal directions. The positive terminal 107 and the negative terminal 108 of the battery PACK are located at its two transverse ends.

[0023] contrast Figure 3 and Figure 1 As can be seen, in the battery pack of this embodiment, the circuit is arranged in a zigzag (snake-like) shape within the two clamping units. Before assembly, no wiring is connected within each clamping unit. When assembling the two clamping units, wiring is then performed between the cells within the unit and between the two units using horizontal wires 105 and vertical wires 106, respectively. This wiring method is not only highly flexible, but also ensures that the positive and negative terminals of the final battery pack are located on opposite end faces, greatly improving the physical spacing. In contrast, in the prior art, the cells within each module (equivalent to the clamping unit in this embodiment) are pre-wired through inter-cell wires 3 to form a zigzag circuit. Then, the zigzag circuits of the two modules are connected through inter-module wires 2 to form a series circuit. This wiring method is not only inflexible, but also results in the positive and negative terminals of the final battery pack being located on the same end face with a small physical spacing, making short circuits more likely.

[0024] As a preferred embodiment, the battery cells 101 in each group of clamping units 100 are not connected before the overall module is electrically connected. This facilitates transportation and allows for the combination of units according to actual site conditions and requirements.

[0025] As a preferred embodiment, the two sets of clamping units 100 are not connected before the overall module is electrically connected.

[0026] As a preferred embodiment, the two sets of clamping units 100 have the same number of battery cells 101.

[0027] Specifically, the two sets of clamping units 100 are fixed by a fixing component to form a stable battery PACK structure, which facilitates movement and assembly.

[0028] As a preferred embodiment, multiple horizontally arranged battery cells 101 in each set of clamping units 100 are fixed into a whole by clamping straps 102.

[0029] As a preferred embodiment, the two sets of clamping units 100 are arranged in close contact along the longitudinal direction.

[0030] This embodiment also provides a battery cluster, including the novel energy storage battery PACK.

[0031] In a preferred embodiment, the battery cluster consists of at least two battery packs stacked in layers and connected in series, with the positive and negative terminals of adjacent battery packs arranged in opposite directions. That is, on the opposite ends of the battery cluster, the positive and negative terminals of adjacent battery packs are directly connected by wires.

[0032] In this embodiment, the battery packs are distinguished by positive and negative terminals, and the layout of the positive and negative leads is changed to increase the physical distance between the positive and negative leads, resulting in good electrical insulation performance and increased electrical safety. The power cable connections are located at opposite ends of the battery pack, with only one lead on each side, reducing the risk of misoperation during operation and improving the convenience of maintenance.

[0033] It will be understood by those skilled in the art that the above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A novel energy storage battery PACK, characterized in that, It includes two sets of clamping units (100), each set of clamping units (100) includes multiple horizontally arranged battery cells (101); in each set of clamping units (100), the positive and negative poles of two horizontally adjacent battery cells (101) are arranged in opposite directions; the two sets of clamping units (100) are arranged in parallel along the longitudinal direction and fixed to form an integral module; in the two sets of clamping units (100) of the integral module, the positive and negative poles of two vertically adjacent battery cells (101) are arranged in the same direction; The overall module forms the battery pack after electrical connection, and the electrical connection structure is as follows: On the adjacent sides of the two sets of clamping units (100), the positive and negative terminals of two longitudinally adjacent cells (101) are connected in series by a longitudinal wire (106). On the opposite sides of the two sets of clamping units (100), the positive and negative terminals of two laterally adjacent cells (101) are connected in series by a lateral wire (105), so that the circuit forms a zigzag shape. The positive terminal (107) and negative terminal (108) of the battery PACK are located at its two lateral ends, respectively.

2. The novel energy storage battery PACK according to claim 1, characterized in that, Before electrical connection, the cells (101) in each set of clamping units (100) of the overall module are not connected to each other.

3. The novel energy storage battery PACK according to claim 1, characterized in that, Prior to electrical connection, the two sets of clamping units (100) are not connected to each other in the overall module.

4. The novel energy storage battery PACK according to claim 1, characterized in that, The number of cells (101) in the two sets of clamping units (100) is the same.

5. The novel energy storage battery PACK according to claim 1, characterized in that, The multiple horizontally arranged cells (101) in each set of clamping units (100) are fixed together as a whole by clamping straps (102).

6. The novel energy storage battery PACK according to claim 5, characterized in that, The two sets of restraint units (100) are arranged in close contact along the longitudinal direction.

7. A battery cluster, characterized in that, Including the novel energy storage battery PACK as described in any one of claims 1-6.

8. The battery cluster according to claim 7, characterized in that, The battery cluster consists of at least two battery packs stacked in layers and connected in series, with the positive and negative terminals of two adjacent battery packs arranged in opposite directions.

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