CTR energy storage battery cluster and power device

Abstract

The utility model discloses a CTR energy storage battery cluster and a vehicle. The CTR energy storage battery cluster comprises a base; the battery comprises a base, a first module and a second module, the first module and the second module are stacked on the base and are alternately arranged, each of the first module and the second module comprises a lower shell and a plurality of battery cells, the lower shell is provided with end plates, a support and a cold plate, the end plates are arranged at the two ends of the support, and the cold plate is arranged at the two ends of the support. The two ends of the support are each connected with one end plate, and the cold plates are arranged at the bottoms of the end plates and connected with the end plates. According to the CTR energy storage battery cluster, the overall structure is compact, the design is ingenious, higher energy is achieved under the same space volume, the space volume is reduced, the cooling efficiency and the cooling effect of the CTR energy storage battery cluster are guaranteed due to the fact that the cold plates are arranged on the two sides of the module, the service life of the battery cells is prolonged, the cycle of the service life of the battery cells is guaranteed, and the service life of the battery cells is prolonged. The cost performance of the CTR energy storage battery cluster is high, and the production cost is reduced.

Description

Technical Field

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

[0002] Related technologies indicate that in recent years, with the advancement and development of science and technology, energy storage batteries have become a focus of research. They drive the development of high-tech products while also constraining the industry's growth. From mobile phones to electric vehicles to power plants and even aerospace, the energy of these mobile technological products is mostly provided by batteries. In recent years, the technological iteration cycle of technological products, such as their appearance design, control programs, functions, and performance, has been very rapid, while the development of core energy batteries has been relatively slow, to the point that it has become one of the factors hindering the development of large-scale energy storage and the automotive industry.

[0003] With various new energy capital entering the energy storage industry, everyone is facing significant cost pressures, which poses a challenge to the cost of individual battery packs. Major new energy companies are aiming for increasingly higher energy density in individual energy storage packs and battery clusters, saving costs by increasing cell capacity and reducing other structural components in the pack and battery cluster.

[0004] Currently, the process involves transferring the battery cell to a battery pack, and then from the battery pack to the battery cluster. A certain amount of space needs to be left between the battery packs, and this space is often wasted. Current liquid cooling products typically use a single-sided liquid cooling plate, resulting in a large temperature difference between the top and bottom of the battery cell, which affects the cell's lifespan. Considering a double-layer cooling plate would be too expensive, making the product neither cost-effective nor competitive. Utility Model Content

[0005] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a CTR energy storage battery cluster, which has a compact overall structure and uniform cooling effect.

[0006] This utility model also proposes a power device having the above-mentioned CTR energy storage battery cluster.

[0007] According to a first aspect of the present invention, a CTR energy storage battery cluster includes: a base; a first module and a second module, wherein the first module and the second module are stacked on the base and arranged alternately, and both the first module and the second module include a lower housing and a plurality of battery cells, wherein the plurality of battery cells are arranged along the thickness direction and disposed on the lower housing, the lower housing has an end plate, a bracket and a cold plate, the end plate is disposed at both ends of the bracket and both ends of the bracket are connected to an end plate, and the cold plate is disposed at the bottom of the end plate and connected to the end plate.

[0008] The CTR energy storage battery cluster of this utility model has a compact overall structure and ingenious design. It has higher energy in the same space volume and reduces the space volume. Cold plates are provided on both sides of the module to ensure the cooling efficiency and cooling effect of the CTR energy storage battery cluster, extend the service life of the battery cells, and ensure the life cycle of the battery cells. The CTR energy storage battery cluster has a high cost performance and reduces production costs.

[0009] In some embodiments, the bracket is welded to the end plate, and / or the end plate is riveted to the cold plate.

[0010] In some embodiments, a heat-conducting component is provided between the battery cell and the cold plate, and / or, a heat-conducting component is provided between the first module and the second module.

[0011] In some embodiments, the cell cover at the top of the CTR energy storage battery cluster is provided with the cold plate, each of the cold plates having a water inlet and a water outlet. The CTR energy storage battery cluster includes a main water inlet pipe and a main water outlet pipe. A main water inlet path is formed in the main water inlet pipe, and a main water outlet path is formed in the main water outlet pipe. Each of the water inlets is connected to the main water inlet path, and each of the water outlets is connected to the main water outlet path. Both the main water inlet pipe and the main water outlet pipe are connected to a cooling device.

[0012] In some embodiments, in the stacking direction of the first module and the second module, the positive electrode of the battery cell in the first module and the negative electrode of the battery cell in the second module are arranged opposite to each other.

[0013] In some embodiments, the top of the end plate is provided with a positioning pin and the bottom of the end plate is provided with a positioning hole. The positioning pin is adapted to extend into the positioning hole, and the first module and the second module are positioned by the positioning pin and the positioning hole.

[0014] In some embodiments, each of the lower housings is provided with a battery management unit, a fuse, and a copper busbar. Each of the battery management units is connected to a communication harness via a transfer harness, and the copper busbar is connected to both ends of the fuse.

[0015] In some embodiments, the CTR energy storage battery cluster further includes: a fixed beam and a connecting beam, wherein the fixed beam is disposed on the side of the bracket away from the battery cell, and the fixed beam is connected to the bracket by fasteners, and the top of each of two adjacent fixed beams is connected to the connecting beam.

[0016] In some embodiments, the support has a first plate and a second plate, the first plate extending vertically and the second plate extending in a direction perpendicular to the extension of the first plate, the first plate being connected to the side of the second plate away from the cold plate.

[0017] The power device according to the second aspect of the present invention includes a CTR energy storage battery cluster according to the first aspect of the present invention.

[0018] According to the power device of this utility model, by setting the CTR energy storage battery cluster of the first aspect mentioned above, the overall performance of the power device is improved and the production cost of the power device is reduced.

[0019] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of a CTR energy storage battery cluster according to an embodiment of the present invention;

[0021] Figure 2 yes Figure 1 An exploded view of the module shown;

[0022] Figure 3 yes Figure 2 A schematic diagram of the lower housing shown;

[0023] Figure 4 yes Figure 1 An assembly diagram of the first module and the base shown in the figure;

[0024] Figure 5 yes Figure 1 An assembly diagram of the first module, the second module, and the base shown in the figure;

[0025] Figure 6 yes Figure 1 A schematic diagram of the base shown;

[0026] Figure 7 yes Figure 1 The diagram shows an assembly of the CTR energy storage battery cluster, in which the top cold plate is not assembled.

[0027] Figure 8 yes Figure 7 The diagram shows an assembly schematic of the CTR energy storage battery cluster.

[0028] Figure label:

[0029] 100. CTR energy storage battery cluster; 1. Base; 2. First module; 3. Second module; 4. Lower shell; 41. End plate; 411. Positioning pin; 42. Bracket; 43. Cold plate; 431. Water inlet; 432. Water outlet; 5. Battery cell; 6. Heat-conducting component; 7. Main water inlet pipe; 8. Main water outlet pipe; 9. Battery management unit; 10. Fuse; 11. Copper busbar; 12. Adapter harness; 13. Communication harness; 14. Fixing beam; 15. Connecting beam; 16. Fastener; 17. Rivet. Detailed Implementation

[0030] 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.

[0031] The following is for reference. Figures 1-8 A CTR energy storage battery cluster 100 according to a first aspect embodiment of the present invention is described.

[0032] like Figures 1-8 As shown, the CTR energy storage battery cluster 100 according to the first aspect embodiment of the present invention includes: a base 1, a first module 2, and a second module 3.

[0033] Specifically, the first module 2 and the second module 3 are stacked on the base 1, and the first module 2 and the second module 3 are arranged alternately. The first module 2 and the second module 3 both include a lower housing 4 and multiple battery cells 5. The multiple battery cells 5 are arranged along the thickness direction and disposed on the lower housing 4. The lower housing 4 has an end plate 41, a bracket 42 and a cold plate 43. The end plate 41 is disposed at both ends of the bracket 42, and both ends of the bracket 42 are connected to an end plate 41. The cold plate 43 is disposed at the bottom of the end plate 41 and connected to the end plate 41.

[0034] Understandably, the first module 2 and the second module 3 are stacked and arranged alternately, which reduces the gap between PACKs and makes the overall structure more compact. The end plate 41 and the bracket 42 ensure the structural stability of the CTR energy storage battery cluster 100. The cold plate 43 is in direct contact with the bottom of the cell 5, which is conducive to heat conduction. The cold plate 43 is located at the bottom of the end plate 41 and connected to it, which helps to centrally manage the heat conducted from the cell 5 and simplifies the layout of the cooling system.

[0035] like Figure 1As shown, the first module 2 and the second module 3 are stacked and alternately arranged in the vertical direction. Each first module 2 and each second module 3 includes a lower housing 4 and multiple battery cells 5. The multiple battery cells 5 are arranged in the lower housing 4 in the left and right direction. The end plate 41 is connected to the left and right ends of the bracket 42, and a bracket 42 is connected to both the front and rear sides of the end plate 41. The bottom of the end plate 41 is connected to the cold plate 43.

[0036] The CTR energy storage battery cluster 100 according to the present invention has a compact overall structure and ingenious design. It has higher energy in the same space volume and reduces the space volume. Cold plates 43 are provided on both sides of the module to ensure the cooling efficiency and cooling effect of the CTR energy storage battery cluster 100, extend the service life of the battery cell 5, and ensure the life cycle of the battery cell 5. The CTR energy storage battery cluster 100 has a high cost performance and reduces production costs.

[0037] In some embodiments of this utility model, the bracket 42 is welded to the end plate 41, and / or the end plate 41 is riveted to the cold plate 43. That is, the bracket 42 is welded to the end plate 41. Welding can provide very high mechanical strength, ensuring a stable connection between the bracket 42 and the end plate 41, thereby enhancing the structural stability of the entire module. Furthermore, welding can reduce additional fasteners 16 or connecting parts, simplifying the assembly process and reducing material costs. The end plate 41 and the cold plate 43 are riveted to each other by rivets 17. Riveting is a physical connection method that does not generate heat like welding, so it has no negative impact on the thermal conductivity of the cold plate 43 and the end plate 41. When the end plate 41 and the cold plate 43 are made of different materials, riveting is not limited by the difference in melting points of the materials and is more flexible than welding.

[0038] In some embodiments of this utility model, a heat-conducting component 6 is provided between the battery cell 5 and the cold plate 43, and / or, a heat-conducting component 6 is provided between the first module 2 and the second module 3. The heat-conducting component 6 can significantly improve the heat conduction efficiency between the battery cell 5 and the cold plate 43, ensuring that heat can be quickly and effectively transferred to the cooling system, thereby maintaining the operating temperature of the battery cell 5 within an ideal range. By using heat-conducting materials or structures, the contact thermal resistance between interfaces can be greatly reduced, making the cooling effect more uniform. The heat-conducting component 6 (such as a thermal pad) can play a buffering role to a certain extent, reducing the damage to the battery cell 5 caused by vibration or other mechanical stress.

[0039] Preferably, the thermally conductive component 6 is a thermally conductive structural adhesive.

[0040] In some embodiments of this utility model, the top cover of the cell 5 located at the top of the CTR energy storage battery cluster 100 is provided with a cold plate 43. Each cold plate 43 has a water inlet 431 and a water outlet 432. The CTR energy storage battery cluster 100 includes a main water inlet pipe 7 and a main water outlet pipe 8. A main water inlet channel is formed in the main water inlet pipe 7, and a main water outlet channel is formed in the main water outlet pipe 8. Each water inlet 431 is connected to the main water inlet channel, and each water outlet 432 is connected to the main water outlet channel. Both the main water inlet pipe 7 and the main water outlet pipe 8 are connected to a cooling device. It can be understood that the cold plate 43 directly contacts the top cover of the cell 5, which can quickly absorb and conduct heat, ensuring that each cell 5 has double-sided cooling, guaranteeing the cooling effect, achieving rapid and uniform heat dissipation, and effectively controlling the temperature of the cell 5; Figure 1 As shown, multiple cold plates 43 are arranged in parallel to ensure that all cells 5 are at similar operating temperatures, thus avoiding performance differences caused by temperature differences.

[0041] In some embodiments of this invention, in the stacking direction of the first module 2 and the second module 3, the positive electrode of the cell 5 in the first module 2 and the negative electrode of the cell 5 in the second module 3 are arranged opposite to each other. Because the positive and negative electrodes are opposite each other, direct series connection between modules can be achieved using simple conductive sheets or wires, reducing complex wiring requirements, minimizing contact points on the current conduction path, reducing contact resistance, and improving current transmission efficiency. Furthermore, the opposite arrangement of positive and negative electrodes between adjacent modules helps dissipate heat from different directions, avoiding localized overheating and resulting in a more uniform temperature distribution throughout the battery cluster.

[0042] In some embodiments of this utility model, the top of the end plate 41 is provided with a positioning pin 411, and the bottom of the end plate 41 is provided with a positioning hole. The positioning pin 411 is adapted to extend into the positioning hole, and the first module 2 and the second module 3 are positioned by the cooperation of the positioning pin 411 and the positioning hole. This not only simplifies the assembly process, but also ensures that the modules maintain the correct relative positions, thereby improving the stability and reliability of the entire battery cluster.

[0043] like Figure 6 As shown, the base 1 is also equipped with a positioning pin 411 to ensure that the module is correctly installed when it is installed on the base 1, thereby reducing the assembly difficulty and assembly error.

[0044] In some embodiments of this utility model, each lower housing 4 is provided with a battery management unit 9, a fuse 10, and a copper busbar 11. Each battery management unit 9 is connected to a communication harness 13 via a transfer harness 12, and the copper busbar 11 connects the two ends of the fuse 10. Thus, integrating the battery management unit 9, fuse 10, and copper busbar 11 into each lower housing 4 reduces the number of external connectors, simplifies the overall structure, and facilitates inspection and maintenance. The fuse 10 is directly mounted on the copper busbar 11, enabling it to quickly cut off the circuit upon detecting abnormal current, ensuring the safety and reliability of the battery pack.

[0045] In some embodiments of this utility model, the CTR energy storage battery cluster 100 further includes: a fixing beam 14 and a connecting beam 15. The fixing beam 14 is located on the side of the bracket 42 away from the battery cell 5, and the fixing beam 14 is connected to the bracket 42 by fasteners 16. The top ends of two adjacent fixing beams 14 are connected to connecting beams 15. This enhances the mechanical strength and stability of the entire battery cluster, while providing convenience for installation and maintenance, simplifying the installation process and improving efficiency. Using fasteners 16 to connect the fixing beam 14 and the bracket 42 facilitates the disassembly and replacement of damaged parts, reducing maintenance costs.

[0046] like Figure 1 As shown, the fixed beam 14 and the connecting beam 15 are compact and occupy a small volume of space.

[0047] In some embodiments of this utility model, the bracket 42 has a first plate and a second plate. The first plate extends vertically, and the second plate extends perpendicular to the extension direction of the first plate. The first plate is connected to the side of the second plate away from the cold plate 43. It is understood that the bracket 42 has an L-shaped structure, which enhances the rigidity and deformation resistance of the bracket 42, reduces local stress concentration, protects the battery cell 5 and other components from mechanical damage, and facilitates installation and maintenance.

[0048] The power device according to the second aspect of the present invention includes a CTR energy storage battery cluster 100 according to the first aspect of the present invention described above.

[0049] According to the power device of the present utility model embodiment, by providing the CTR energy storage battery cluster 100 of the first aspect embodiment described above, the overall performance of the power device is improved and the production cost of the power device is reduced.

[0050] In the description of this utility model, 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", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0051] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0052] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0053] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

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

Claims

1. A CTR energy storage battery cluster, characterized in that, include: Base; A first module and a second module are stacked on the base and arranged alternately. Each first module and the second module includes a lower housing and multiple battery cells. The multiple battery cells are arranged along the thickness direction and disposed on the lower housing. The lower housing has an end plate, a bracket and a cold plate. The end plate is disposed at both ends of the bracket and is connected to one end plate at each end of the bracket. The cold plate is disposed at the bottom of the end plate and is connected to the end plate.

2. The CTR energy storage battery cluster according to claim 1, characterized in that, The bracket is welded to the end plate, and / or the end plate is riveted to the cold plate.

3. The CTR energy storage battery cluster according to claim 2, characterized in that, A heat-conducting component is provided between the battery cell and the cold plate, and / or a heat-conducting component is provided between the first module and the second module.

4. The CTR energy storage battery cluster according to claim 3, characterized in that, The cell cover at the top of the CTR energy storage battery cluster is provided with the cold plate. Each cold plate has a water inlet and a water outlet. The CTR energy storage battery cluster includes a main water inlet pipe and a main water outlet pipe. A main water inlet path is formed in the main water inlet pipe, and a main water outlet path is formed in the main water outlet pipe. Each water inlet is connected to the main water inlet path, and each water outlet is connected to the main water outlet path. Both the main water inlet pipe and the main water outlet pipe are connected to a cooling device.

5. The CTR energy storage battery cluster according to any one of claims 1-4, characterized in that, In the stacking direction of the first module and the second module, the positive electrode of the battery cell in the first module and the negative electrode of the battery cell in the second module are arranged opposite to each other.

6. The CTR energy storage battery cluster according to any one of claims 1-4, characterized in that, The end plate has a positioning pin at the top and a positioning hole at the bottom. The positioning pin is adapted to extend into the positioning hole. The first module and the second module are positioned by the positioning pin and the positioning hole.

7. The CTR energy storage battery cluster according to any one of claims 1-4, characterized in that, Each of the lower housings is provided with a battery management unit, a fuse, and a copper busbar. Each of the battery management units is connected to a communication harness via an adapter harness, and the copper busbar is connected to both ends of the fuse.

8. The CTR energy storage battery cluster according to any one of claims 1-4, characterized in that, Also includes: The bracket includes a fixed beam and a connecting beam. The fixed beam is located on the side of the bracket away from the battery cell, and the fixed beam is connected to the bracket by fasteners. The top of each of the two adjacent fixed beams is connected to the connecting beam.

9. The CTR energy storage battery cluster according to any one of claims 1-4, characterized in that, The bracket has a first plate and a second plate, the first plate extending vertically and the second plate extending perpendicular to the extension direction of the first plate, the first plate being connected to the side of the second plate away from the cold plate.

10. A power unit, characterized in that, Includes the CTR energy storage battery cluster as described in any one of claims 1-9.

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