Cylindrical battery cell module and energy storage battery pack

Abstract

The utility model belongs to the field of energy storage battery packs, and discloses a cylindrical battery cell module which comprises a plurality of cylindrical battery cells and a collector plate, a multi-state crank rod and a fixed single-state conduction sheet are rotatably arranged on the cover surface of each cylindrical battery cell, and the multi-state crank rod and the single-state conduction sheet are respectively conducted with the positive electrode and the negative electrode of the corresponding cylindrical battery cell. The collector plate forms a plurality of conduction paths through wiring, each conduction path forms a plurality of first hole rings and a second hole ring on the collector plate, a plurality of interaction areas corresponding to the cylindrical battery cells are formed on the collector plate, and each interaction area is internally provided with a plurality of first hole rings and a second hole ring; the multiple first hole rings and one second hole ring in each interaction area belong to different conduction paths, the multi-state crank rod is selectively conducted with the first hole ring of the corresponding interaction area through rotation, and the single-state conduction piece is conducted with the second hole ring of the corresponding interaction area. The utility model further discloses an energy storage battery pack comprising the cylindrical battery cell module.

Description

Technical Field

[0001] This utility model belongs to the field of energy storage battery packs, specifically relating to a cylindrical cell module and an energy storage battery pack. Background Technology

[0002] Battery energy storage technology possesses the function of regulating energy storage and release, enabling efficient energy transfer. When applied to power systems, it can significantly improve grid stability, gradually becoming a necessity and standard feature of the power grid. An energy storage battery pack is the smallest unit of an energy storage system, comprising multiple battery cells and a busbar connected to each cell. The busbar connects the multiple cells in series or parallel to form a predetermined voltage and energy output. Multiple energy storage battery packs are then connected in series and / or parallel to form the entire energy storage system.

[0003] Currently, based on different operating conditions, energy storage battery packs have various structural forms to meet different energy supply and voltage output requirements. That is, under different operating conditions, the number of cylindrical cells in the energy storage battery pack is different, and the series and parallel connection methods are different, which leads to the need for customized matching of corresponding cell fixing components, current collection components, and data acquisition components.

[0004] As can be seen, the above implementation method results in poor versatility of energy storage battery packs for different operating conditions. That is, it is necessary to re-manufacture different numbers of cylindrical cells according to the operating conditions, organize the series and parallel relationships of multiple cylindrical cells, and make adaptive adjustments to related components, which leads to long development cycles and high costs for energy storage battery packs. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a cylindrical cell module and an energy storage battery pack, which can flexibly and quickly adjust the number of cylindrical cells and their series-parallel connection method in the energy storage battery, thereby greatly improving the versatility of the energy storage battery pack under various working conditions.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A cylindrical battery cell module, characterized in that it comprises: multiple cylindrical batteries, a multi-state crank rod rotatably disposed on the cover surface of each cylindrical battery cell, and a single-state conductive piece fixedly disposed thereon, the multi-state crank rod and the single-state conductive piece being respectively connected to the positive and negative terminals of the cylindrical battery cell, and the rotation axis of the multi-state crank rod being parallel or coaxial with the cylindrical battery cell; a current collector disposed near the cylindrical battery cells, wherein the current collector forms multiple conductive paths through wiring, each conductive path forming multiple first orifice rings and a second orifice ring on the current collector, multiple interaction areas are formed on the current collector corresponding to the cylindrical battery cells, each interaction area having multiple first orifice rings and a second orifice ring, and the multiple first orifice rings and the second orifice rings in each interaction area belonging to different conductive paths, the multi-state crank rod being selectively connected to the first orifice ring of the corresponding interaction area by rotation, and the single-state conductive piece being connected to the second orifice ring of the corresponding interaction area.

[0008] Preferably, the multi-state crankshaft has a first conductive pin extending toward the manifold, and the single-state conductive plate has a second conductive pin extending toward the manifold.

[0009] Preferably, the edge of the current collector has an output terminal, which is electrically coupled to at least one conductive path.

[0010] Preferably, the multiple cylindrical cells are arranged in a two-column planar matrix, with the current collector parallel to the cover surface of the cylindrical cells and the interaction area facing the cover surface of the cylindrical cells.

[0011] Furthermore, the energy storage battery pack has multiple specifications, and the extension length of the current collector of each specification of cylindrical cell module is different. The multiple specifications of cylindrical cell modules correspond to different numbers of cylindrical cells.

[0012] An energy storage battery pack is characterized by comprising: a plurality of cylindrical cell modules as described above, and a busbar that is electrically connected to the plurality of cylindrical cell modules.

[0013] Preferably, the present invention also includes an energy storage box, in which multiple cylindrical battery cell modules and busbars are disposed inside the energy storage box, and the gaps formed by the multiple cylindrical battery cell modules and busbars inside the energy storage box are filled with thermally conductive adhesive.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. Because the cylindrical battery cell module of this utility model includes multiple cylindrical batteries and a current collector, a multi-state crank rod and a fixed single-state conductive piece are rotatably arranged on the cover surface of the cylindrical battery cell. The multi-state crank rod and the single-state conductive piece are respectively connected to the positive and negative terminals of the cylindrical battery cell. The current collector forms multiple conductive paths through wiring. Each conductive path forms multiple first hole rings and one second hole ring on the current collector. Multiple interaction areas are formed on the current collector corresponding to the cylindrical battery cell. Each interaction area has multiple first hole rings and one second hole ring, and the multiple first hole rings and one second hole ring in each interaction area belong to different conductive paths. The multi-state crank rod... By rotating the crank to connect one of the first hole rings in the corresponding interaction area, and the single-state conductive piece connecting the second hole ring in the corresponding interaction area, the multi-state crank can select different first hole rings within the interaction area. This allows the current cylindrical cell to connect with different other cylindrical cells through the current collector, thus facilitating the switching between series and parallel connections of cylindrical cells. It also allows for the convenient removal of at least one cylindrical cell from the circuit system. Therefore, this invention can flexibly and quickly adjust the number of cylindrical cells and their series / parallel connection methods in the energy storage battery, greatly improving the versatility of the energy storage battery pack under various operating conditions.

[0016] 2. Because the multiple cylindrical cells of this utility model are distributed in a two-column planar matrix, the current collector is parallel to the cover surface of the cylindrical cells, and the interaction area faces the cover surface of the cylindrical cells, the two-column distribution of the cylindrical cells makes the welding operation more convenient when the cylindrical cells are removed by welding and the multi-state crank is rotated for adjustment. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of an energy storage battery pack according to an embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of a cylindrical battery cell module according to an embodiment of the present invention;

[0019] Figure 3 This is a schematic diagram of a cylindrical battery cell according to an embodiment of the present invention;

[0020] Figure 4 This is a schematic diagram of a portion of the current collector plate according to an embodiment of the present utility model;

[0021] Figure 5 This is a schematic diagram of various specifications of cylindrical battery cell modules according to embodiments of this utility model;

[0022] Figure 6 This is a schematic diagram illustrating the interaction between the cylindrical battery cell module and the busbar in an embodiment of this utility model.

[0023] In the diagram: 100, energy storage battery pack; 10, energy storage housing; 20, cylindrical cell module; 21, cylindrical cell; 21a, cover; 211, multi-state crankshaft; 211a, first conductive solder pin; 212, single-state conductive piece; 212a, second conductive solder pin; 22, current collector; 22a, interaction area; 221, conductive path; 221a, first hole ring; 221b, second hole ring; 222, output terminal; 30a, first busbar; 30b, second busbar. Detailed Implementation

[0024] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the following embodiments, in conjunction with the accompanying drawings, will specifically illustrate the energy storage battery pack of this utility model. It should be noted that the description of these embodiments is for the purpose of helping to understand this utility model, but does not constitute a limitation on this utility model.

[0025] like Figure 1 As shown, the energy storage battery pack 100 in this embodiment includes an energy storage box 10, multiple cylindrical cell modules 20, and multiple busbars.

[0026] Multiple cylindrical cell modules 20 and busbars are all located inside the energy storage box 10, and the gaps formed by the multiple cylindrical cell modules 20 and busbars inside the energy storage box 10 are fully filled with thermally conductive adhesive (not shown in the attached figure).

[0027] like Figure 2 As shown, the cylindrical cell module 20 includes multiple cylindrical cells 21 and a current collector 22.

[0028] Multiple cylindrical cells 21 are arranged in a two-column planar matrix. Specifically, the current collector 22 is parallel to the cover surface 21a of the cylindrical cells 21, and the current collector 22 has a plate surface facing the cover surface 21a.

[0029] like Figure 3 As shown, the cylindrical battery cell 21 is disposed on the inner wall of the energy storage box 10, and the cover surface 21a is provided with a multi-state crank rod 211 and a single-state conductive piece 212.

[0030] The multi-state crank 211 is rotatably mounted relative to the cover surface 21a, and the single-state conductive piece 212 is fixedly mounted relative to the cover surface 21a. The multi-state crank 211 and the single-state conductive piece 21a are respectively connected to the positive and negative terminals of the cylindrical cell 21. The rotation axis of the multi-state crank 211 is parallel or coaxial with the extension axis of the cylindrical cell 21. Specifically, the rotation axis of the multi-state crank 211 is coaxial with the extension axis of the cylindrical cell 21.

[0031] The multi-state crank 211 has a first conductive welding pin 211a extending toward the current collector 22, and the single-state conductive piece 212 has a second conductive welding pin 212a extending toward the current collector 22. Specifically, the multi-state crank 211 and the single-state conductive piece 212 are electrically coupled to the current collector 22 through the first conductive welding pin 211a and the second conductive welding pin 212a, respectively. Furthermore, through the hot melt welding point, the multi-state crank 211 and the single-state conductive piece 212 can be decoupled from the current collector 22.

[0032] like Figure 4 As shown, the current collector 22 is disposed near the cover surface 21a of the cylindrical cell 21. The current collector 22 forms multiple conductive paths 221 through wiring. Each conductive path 221 forms multiple first hole rings 221a and a second hole ring 221b on the current collector 22.

[0033] Multiple interaction areas 22a are formed on the current collector 22 corresponding to the cover surface 21a of the cylindrical cell 21. Each interaction area 22a has multiple first hole rings 221a and one second hole ring 221b. The multiple first hole rings 221a and one second hole ring 221b in each interaction area 22a belong to different conduction paths 221, that is, the four hole rings belong to four different conduction paths 221 respectively.

[0034] The multi-state crank 211 is selectively connected to the first hole ring 221a of the corresponding interaction area 22a by rotation, and the single-state conductive piece 212 is connected to the second hole ring 221b of the corresponding interaction area 22a. Specifically, when the multi-state crank 211 changes the first hole ring 221a of the conductive coupling by rotation, it changes the cylindrical cell 21 that is immediately connected to the current cylindrical cell 21. This can change the parallel or series connection mode of multiple cylindrical cells 21 in the same cylindrical cell module 20. At the same time, it can also exclude a predetermined cylindrical cell 21 from the conductive connection, that is, it realizes the reduction of the number of cylindrical cells 21 in the same cylindrical cell module 20. On the other hand, it can also increase the number of cylindrical cells 21 in the same cylindrical cell module 20 based on the former.

[0035] The edge of the current collector 22 also has an output terminal 222, which is electrically coupled to at least one conductive path 221, so that multiple cylindrical cells 21 of the same cylindrical cell module 20 can be combined and output to the outside through the output terminal 222.

[0036] like Figure 5 As shown, the cylindrical cell module 20 has multiple specifications, and the extension length of the current collector 22 of each specification of the cylindrical cell module 20 is different. Furthermore, the cylindrical cell modules 20 of multiple specifications include a different number of cylindrical cells 21.

[0037] like Figure 6As shown, the busbar is divided into a first busbar 30a and a second busbar 30b, which respectively connect the positive and negative terminals of the cylindrical cell module 20.

[0038] The above embodiments are preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Various modifications or variations that can be made by those skilled in the art without creative effort within the scope of the appended claims are still within the scope of protection of this patent.

Claims

1. A cylindrical battery cell module, characterized in that, include: Multiple cylindrical battery cells are provided. A multi-state crankshaft is rotatably mounted on the cover surface of each cylindrical battery cell, and a single-state conductive plate is fixedly mounted thereon. The multi-state crankshaft and the single-state conductive plate are respectively connected to the positive and negative terminals of their respective cylindrical battery cells, and the rotation axis of the multi-state crankshaft is parallel to or coaxial with the cylindrical battery cells. A current collector is disposed near the cylindrical battery cell. The current collector plate forms multiple conductive paths through wiring, and each conductive path forms multiple first hole rings and one second hole ring on the current collector plate. The current collector forms multiple interaction zones corresponding to the cylindrical battery cell. Each interaction zone has multiple first hole rings and one second hole ring. The multiple first hole rings and one second hole ring in each interaction zone belong to different conduction paths. The multi-state crank rod connects to the first hole ring of the corresponding interaction zone by rotation. The single-state conductive piece connects to the second hole ring of the corresponding interaction zone.

2. The cylindrical battery cell module according to claim 1, characterized in that: in, The multi-state crankshaft has a first conductive pin extending toward the manifold, and the single-state conductive plate has a second conductive pin extending toward the manifold.

3. The cylindrical cell module according to claim 1, characterized in that: in, The edge of the current collector has an output terminal that is electrically coupled to at least one of the conduction paths.

4. The cylindrical battery cell module according to claim 1, characterized in that: in, The plurality of cylindrical cells are arranged in a two-column planar matrix, the current collector is parallel to the cover surface of the cylindrical cells, and the interaction area faces the cover surface of the cylindrical cells.

5. The cylindrical cell module according to claim 4, characterized in that: The cylindrical cell module has multiple specifications, and the current collector has a different extension length for each specification. The multiple specifications of cylindrical cell modules correspond to different numbers of cylindrical cells.

6. An energy storage battery pack, characterized in that, include: Multiple cylindrical cell modules as described in any one of claims 1-5, The busbar is electrically connected to all of the multiple cylindrical battery cell modules.

7. The energy storage battery pack according to claim 6, characterized in that, Also includes: The energy storage box contains multiple cylindrical battery cell modules and the busbar, all of which are disposed inside the energy storage box. The gaps formed by the multiple cylindrical battery cell modules and the busbar inside the energy storage box are filled with thermally conductive adhesive.

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