Lithium battery energy storage module

Abstract

The utility model discloses a lithium battery energy storage module, which relates to the technical field of electrochemical energy storage, and comprises a plurality of lithium battery monomers, a CCS integrated busbar, a battery heat conduction pad, an end plate heat conduction pad, an end plate, an end seat and a steel belt, the CCS integrated busbar is arranged at the top ends of the lithium battery monomers, so that the plurality of lithium battery monomers are electrically connected; a plurality of battery heat conduction pads are arranged between every two adjacent lithium battery monomers, and the battery heat conduction pads are attached to the lithium battery monomers; end plates are arranged on the outer sides of the lithium battery monomers at the head end and the tail end of the module, end plate heat conduction pads are arranged between the end plates and the adjacent lithium battery monomers, and the end plate heat conduction pads are attached to the end plates and the lithium battery monomers. The end seat is arranged at the top end of the end plate, and the end seat is fixedly connected with the CCS integrated busbar; the steel belt is arranged on the outer side of the module and used for fixing the module.

Description

Technical Field

[0001] The utility model relates to the technical field of electrochemical energy storage, in particular to a lithium battery energy storage module. Background Art

[0002] With the rapid development of wind power, solar power and smart grid industries, energy storage technology has become the focus of attention. Large-scale energy storage technology is considered a strategic technology to support the popularization of renewable energy and has received great attention from governments and businesses. In recent years, with the advancement of lithium-ion battery technology, its high cycle life and energy density have made it have a good prospect in the field of large-scale energy storage.

[0003] And under the dual carbon goals, electrification is the general trend. In the past decade, the power industry has become an important national energy strategy by improving coal-fired units, developing non-fossil energy, and increasing clean energy power generation. At present, the increase in new energy power generation will impact the stability of the power grid system, and the mismatch between power supply and demand is imminent. The output characteristics of new energy are random and volatile due to the influence of the natural environment, making it difficult to provide regulation capabilities for the system. The power grid needs to adjust the power grid according to the output power of the generator set and the power demand to maintain a stable frequency operation. The high proportion of renewable energy grid connection will further test the regulation capabilities of the power system.

[0004] However, in the existing technology, with the rapid development of lithium battery energy storage technology, the requirements for lithium battery modules are getting higher and higher. Traditional lithium battery modules have deficiencies in structure, energy density and heat dissipation performance, and are difficult to meet the application requirements of high energy and high power, and the lithium battery module has short service life and other technical problems. Utility Model Content

[0005] In view of the deficiencies of the above-mentioned prior art, the purpose of the present utility model is to provide a lithium battery energy storage module to solve the technical problems in the above-mentioned prior art such as "the traditional lithium battery module has deficiencies in structure, energy density and heat dissipation performance, which makes it difficult to meet the application requirements of high energy and high power, and the lithium battery module has a short service life".

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A lithium battery energy storage module, comprising a plurality of lithium battery cells, and also comprising a CCS integrated busbar, a battery thermal pad, an end plate thermal pad, an end plate, an end seat and a steel belt;

[0008] The CCS integrated busbar is arranged at the top of the lithium battery cell to realize electrical connection between multiple lithium battery cells;

[0009] A plurality of battery thermal pads are provided between two adjacent lithium battery cells, and the battery thermal pads are fitted with the lithium battery cells;

[0010] The lithium battery cells at both ends of the module are provided with end plates on the outside, and end plate thermal pads are provided between the end plates and the adjacent lithium battery cells, and the end plate thermal pads are in contact with the end plates and the lithium battery cells;

[0011] The end seat is arranged at the top of the end plate, and the end seat is fixedly connected to the CCS integrated busbar;

[0012] The steel belt is arranged on the outside of the module and is used to fix the module.

[0013] Beneficial effects of the above technical solution: Compared with the prior art, the lithium battery energy storage module has made effective improvements to the overall structure or assembly method of the lithium battery cells, CCS integrated busbar, battery thermal pad, end plate thermal pad, end plate, end seat and steel belt. The high energy density of the lithium battery module is ensured by arranging multiple lithium battery cells and cooperating with each other through the CCS integrated busbar, end plate and end seat to meet the application requirements of high energy and high power. The high heat dissipation performance of the lithium battery module is ensured by arranging a number of battery thermal pads between two lithium battery cells and an end plate thermal pad between the end plate and the adjacent lithium battery cells to extend the service life of the lithium battery module. The steel belt is arranged on the outside of the module to ensure that the lithium battery modules are fastened together and the structure is compact for easy carrying and installation. The technical problems such as "the traditional lithium battery module has deficiencies in structure, energy density and heat dissipation performance, and it is difficult to meet the application requirements of high energy and high power, and the lithium battery module has a short service life" are solved.

[0014] Preferably, the lithium battery energy storage module is composed of a plurality of lithium battery cells arranged side by side; and the number of end plates provided is two.

[0015] The beneficial effects of the above technical solution are as follows: by arranging multiple lithium battery cells in parallel, the lithium battery module can be ensured to meet the application requirements of high energy and high power, and by setting the end plate in two pieces, the lithium battery module can be fixed.

[0016] In a preferred solution, two terminal seats are provided, and the terminal seats are respectively fixedly connected to the positive and negative output terminals of the CCS integrated busbar.

[0017] The beneficial effect of the above technical solution is: by setting two end seats, it is ensured that the positive and negative electrodes are led out for the lithium battery module.

[0018] In a preferred solution, the terminal seat is insulated from the positive and negative output terminals of the CCS integrated busbar, and the terminal seat is insulated from the end plate.

[0019] The beneficial effect of the above technical solution is that the safety of the lithium battery module is ensured by maintaining insulation between the terminal seat and the positive and negative output terminals of the CCS integrated busbar and the end plate.

[0020] In a preferred solution, two steel belts are provided, and the steel belts are sleeved on the outer sides of the two end plates.

[0021] The beneficial effect of the above technical solution is that by providing steel strips on the outer sides of the two end plates, the lithium battery modules are further secured.

[0022] In a preferred solution, multiple lithium battery cells are connected in series or in parallel.

[0023] The beneficial effect of the above technical solution is: by connecting multiple lithium battery cells in series or in parallel, it is further ensured that the lithium battery module meets the application requirements of high energy and high power.

[0024] Preferably, the battery thermal pad is a thermally conductive silicone pad.

[0025] The beneficial effect of the above technical solution is: by using thermally conductive silicone pad material for the battery thermal pad, it is ensured that the heat is evenly conducted between the batteries and the battery gap is adjusted at the same time.

[0026] Preferably, the end plate thermal pad is a thermally conductive silicone pad.

[0027] The beneficial effect of the above technical solution is: by using a thermally conductive silicone pad material for the end plate thermal pad, it is ensured that the lithium battery module is heat-dissipated and evenly heated, while providing insulation and support between the lithium battery modules. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the drawings required for use in the specific implementation or the prior art description will be briefly introduced below. Obviously, the drawings described below are some implementations of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0029] Figure 1 A schematic diagram of an explosion of a lithium battery energy storage module provided in Example 1 of the utility model;

[0030] Figure 2 A schematic diagram of the assembly of a lithium battery energy storage module provided in Example 1 of the utility model;

[0031] Description of reference numerals;

[0032] 1-CCS integrated busbar; 2-thermal pad; 3-lithium battery cell; 4-end plate thermal pad; 5-end plate; 6-end seat; 7-steel belt. DETAILED DESCRIPTION

[0033] Example 1

[0034] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with embodiments.

[0035] like Figure 1 to Figure 2 As shown, a lithium battery energy storage module includes a plurality of lithium battery cells 3, a CCS integrated busbar 1, a battery thermal pad 2, an end plate thermal pad 4, an end plate 5, an end seat 6 and a steel belt 7;

[0036] The CCS integrated busbar 1 is arranged at the top of the lithium battery cell 3 to realize the electrical connection between multiple lithium battery cells;

[0037] A plurality of battery thermal pads 2 are provided between two adjacent lithium battery cells 3, and the battery thermal pads 2 are attached to the lithium battery cells 3;

[0038] The lithium battery cells 3 at both ends of the module are provided with end plates 5 on the outside, and end plate thermal pads 4 are provided between the end plates 5 and the adjacent lithium battery cells 3. The end plate thermal pads 4 are in contact with the end plates 5 and the lithium battery cells 3.

[0039] The end seat 6 is arranged at the top of the end plate 5, and the end seat 6 is fixedly connected to the CCS integrated busbar 1;

[0040] The steel belt 7 is arranged on the outside of the module for fixing the module; the overall structure or assembly method of the lithium battery cell 3, the CCS integrated busbar 1, the battery thermal pad 2, the end plate thermal pad 4, the end plate 5, the end seat 6 and the steel belt 7 are effectively improved, and the high energy density of the lithium battery module is ensured by arranging multiple lithium battery cells 3 and by the mutual cooperation between the CCS integrated busbar 1, the end plate 5 and the end seat 6 to meet the application requirements of high energy and high power; a plurality of battery thermal pads 2 are arranged between two lithium battery cells 3 and an end plate thermal pad 4 is arranged between the end plate 5 and the adjacent lithium battery cell 3 to ensure the high heat dissipation performance of the lithium battery module to extend the service life of the lithium battery module; a steel belt 7 is arranged on the outside of the module to ensure that the lithium battery modules are fastened together, and the structure is compact for easy carrying and installation.

[0041] In this embodiment, the lithium battery energy storage module is composed of a plurality of lithium battery cells 3 arranged side by side; the number of end plates 5 is set to two; by arranging a plurality of lithium battery cells 3 arranged side by side, it is ensured that the lithium battery module meets the application requirements of high energy and high power, and by setting the number of end plates 5 to two, it is ensured that the lithium battery module plays a fixing role.

[0042] In this embodiment, two end seats 6 are provided, and the end seats 6 are fixedly connected to the positive and negative output terminals of the CCS integrated busbar 1 respectively; by providing two end seats 6, it is ensured that the positive and negative electrodes are led out for the lithium battery module.

[0043] In this embodiment, the terminal seat 6 is insulated from the positive and negative output terminals of the CCS integrated busbar 1, and the terminal seat 6 is insulated from the end plate 5; by maintaining insulation between the terminal seat 6 and the positive and negative output terminals of the CCS integrated busbar 1 and the end plate 5, the safety of the lithium battery module is ensured.

[0044] In this embodiment, two steel belts 7 are provided, and the steel belts 7 are sleeved on the outer sides of the two end plates 5. By providing the steel belts 7 on the outer sides of the two end plates 5, it is further ensured that the lithium battery modules are tightened.

[0045] In this embodiment, a plurality of lithium battery cells 3 are connected in series or in parallel. By connecting a plurality of lithium battery cells 3 in series or in parallel, it is further ensured that the lithium battery module meets the application requirements of high energy and high power.

[0046] In this embodiment, the battery thermal pad 2 is made of a thermally conductive silicone pad. By using the thermally conductive silicone pad material for the battery thermal pad 2, it is ensured that the heat is evenly conducted between the batteries and the battery gap is adjusted at the same time.

[0047] In this embodiment, the end plate thermal pad 4 is made of thermally conductive silicone pad; by using the thermally conductive silicone pad material for the end plate thermal pad 4, it is ensured that the lithium battery module is heat-dissipated and evenly heated, while providing insulation and support between the lithium battery modules.

[0048] In this embodiment, the CCS integrated busbar 1 is provided with a series aluminum busbar, a voltage and temperature sampling integrated FPC, and a hot pressing fixed film, which are highly integrated to realize the series arrangement and sampling control of lithium battery cells, further ensure the safety of its lithium battery module, and by setting the voltage and temperature sampling integrated FPC, ensure that the battery management system performs real-time monitoring and protection; ensure fast charging and discharging speeds and improve utilization efficiency. This part is a conventional technology in this field and will not be described in detail.

[0049] In this embodiment, there is no specific algorithm or circuit diagram involved between the CCS integrated busbar 1 and the lithium battery cell 3, which is a conventional technology in the art.

[0050] Specific usage of this utility model:

[0051] Step 1: Arrange multiple lithium battery cells 3 side by side to form a lithium battery energy storage module, and place a plurality of battery thermal pads 2 between two adjacent lithium battery cells 3, so that the battery thermal pads 2 fit the lithium battery cells 3;

[0052] Step 2: Set the CCS integrated busbar 1 on the top of the lithium battery cell 3 to achieve series connection between multiple lithium battery cells;

[0053] Step 3: two end plates 5 are respectively arranged outside the lithium battery cells 3 at the head and tail ends of the lithium battery module, and an end plate thermal pad 4 is placed between the end plate 5 and the adjacent lithium battery cells 3 and fits them together;

[0054] Step 4: The end seat 6 is arranged on the top of the end plate 5, the end seat 6 is fixedly connected to the CCS integrated busbar 1, and the end seat 6 is insulated from the positive and negative output ends of the CCS integrated busbar 1;

[0055] Step 5: Put two steel belts 7 on the outside of the two end plates 5 and tighten them.

[0056] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0057] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention.

[0058] The above are only preferred implementations of the utility model. It should be pointed out that due to the limitations of textual expression and the objective existence of infinite specific structures, ordinary technicians in this technical field can make several improvements, modifications or changes without departing from the principles of the utility model, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the concept and technical solution of the utility model to other occasions without improvement, should all be regarded as protection of the utility model.

Claims

1. A lithium battery energy storage module, comprising a plurality of lithium battery cells (3), a CCS integrated busbar (1), a battery thermal pad (2), an end plate thermal pad (4), an end plate (5), an end seat (6) and a steel belt (7), It is characterized by: The CCS integrated busbar (1) is arranged at the top of the lithium battery cell (3) to realize electrical connection between multiple lithium battery cells; A plurality of battery thermal pads (2) are provided between two adjacent lithium battery cells (3), and the battery thermal pads (2) are in contact with the lithium battery cells (3); The lithium battery cells (3) at both ends of the module are provided with end plates (5) on the outside, and end plate heat conductive pads (4) are provided between the end plates (5) and the adjacent lithium battery cells (3), and the end plate heat conductive pads (4) are in contact with the end plates (5) and the lithium battery cells (3); The end seat (6) is arranged at the top end of the end plate (5), and the end seat (6) is fixedly connected to the CCS integrated busbar (1); The steel belt (7) is arranged on the outside of the module and is used to fix the module.

2. A lithium battery energy storage module according to claim 1, characterized in that: The lithium battery energy storage module is composed of a plurality of lithium battery cells (3) arranged side by side; and the number of end plates (5) provided is two.

3. A lithium battery energy storage module according to claim 1, characterized in that: The number of the end seats (6) is two, and the end seats (6) are respectively fixedly connected to the positive and negative output terminals of the CCS integrated busbar (1).

4. A lithium battery energy storage module according to claim 3, characterized in that: The terminal seat (6) is insulated from the positive and negative output ends of the CCS integrated busbar (1), and the terminal seat (6) is insulated from the end plate (5).

5. A lithium battery energy storage module according to claim 2, characterized in that: The number of the steel belts (7) is two, and the steel belts (7) are sleeved on the outer sides of the two end plates (5).

6. A lithium battery energy storage module according to claim 1, characterized in that: The plurality of lithium battery cells (3) are connected in series or in parallel.

7. A lithium battery energy storage module according to claim 1, characterized in that: The battery heat-conducting pad (2) is a heat-conducting silica gel pad.

8. A lithium battery energy storage module according to claim 1, characterized in that: The end plate heat conductive pad (4) is a heat conductive silica gel pad.

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