Battery system with fire-fighting, liquid-cooling and heat-preserving functions suitable for energy storage technology

Abstract

The utility model discloses a battery system with fire protection, liquid cooling and heat preservation functions suitable for energy storage technology, which comprises a lower cover, an upper box body, a module, an electrical board and a maintenance panel, the lower cover and the upper box body are fixedly arranged together, the module is accommodated in the inner space of the upper box body and is fixedly arranged together with the lower cover, and the electrical board is arranged on the lower cover. The maintenance panel is installed on the front surface of the electrical board, the electrical board and the upper box body are fixedly installed together, the electrical board and the lower cover are fixedly installed together, a water cooling flow channel extending in the length direction of the lower cover and a QC water cooling connector communicated with the water cooling flow channel are distributed in the middle of the lower cover, and a fire fighting system is fixed to the electrical board. The utility model can solve the problem of battery cell recycling caused by battery work and environment temperature, and meanwhile, single-pack-level fire protection is provided, so that the use safety of the battery is ensured.

Description

Technical field:

[0001] The utility model relates to a battery system with fire protection, liquid cooling and heat preservation functions applicable to energy storage technology, and belongs to the technical field of new energy storage batteries. Background technology:

[0002] Energy storage technology has largely solved the randomness and volatility problems of renewable energy generation, can achieve smooth output of renewable energy generation, and can effectively regulate the changes in grid voltage, frequency and phase caused by renewable energy generation. The good development of new energy vehicles, especially electric vehicles, is beneficial to the development of the power battery energy storage industry. Energy storage technology can be said to be the core of the new energy industry revolution. If the energy storage system is regarded as a "human body", then the battery pack is the "heart", which is responsible for the storage and release of electrical energy.

[0003] However, in the new energy battery industry, the battery system has always been faced with the problem of poor battery cell service life and consistency due to the influence of the battery cell operating temperature and high and low temperature environment. At the same time, when thermal runaway and fire occur, it is a considerable hidden danger to the environment, surrounding buildings, and even the safety of human life.

[0004] Therefore, it is necessary to improve the existing technology to solve the shortcomings of the existing technology. Utility model content:

[0005] The utility model aims to solve the problems existing in the above-mentioned prior art and provides a battery system with fire protection, liquid cooling and heat preservation functions suitable for energy storage technology, which can solve the problem of battery cell recycling caused by battery operation and ambient temperature, and is equipped with single-pack-level fire protection to ensure the safety of battery use.

[0006] The technical solutions adopted by the utility model include: a battery system with fire protection, liquid cooling and heat preservation functions suitable for energy storage technology, including a lower cover, an upper box body, a module, an electrical board and a maintenance panel, the lower cover and the upper box body are fixed together, the module is accommodated in the internal space of the upper box body and the module and the lower cover are fixed together, the maintenance panel is installed on the front surface of the electrical board, the electrical board and the upper box body are fixed together, the electrical board and the lower cover are fixed together, a water cooling channel extending along the length direction of the lower cover and a QC water cooling joint intersecting the water cooling channel are distributed in the middle of the lower cover, and a fire protection system is fixed on the electrical board.

[0007] Furthermore, a heat-insulating component is pasted on the inner surface of the upper box body, the thickness of the heat-insulating component is 3 mm, the material is a foamed polyurethane coating, and the thermal conductivity coefficient is 0.05 (W / (m·K)).

[0008] Furthermore, a first foamed silicone sealing ring is pasted between the upper box body and the lower cover.

[0009] Furthermore, a second foamed silicone seal ring is pasted between the maintenance panel and the electrical board, and a third foamed silicone seal ring is pasted between the electrical board and the upper box body.

[0010] Furthermore, a thermally conductive silicone pad is provided between the module and the lower cover, and the thermally conductive silicone pad is made of pure thermally conductive silicone with a thermal conductivity of 1.5 (W / (m·K)).

[0011] Furthermore, the material of the lower cover is Al 3003, and the thermal conductivity is 138 (W / (m·K)).

[0012] The utility model has the following beneficial effects:

[0013] (1) The utility model can solve the problem of reduced performance of power battery discharge capacity, module temperature consistency, etc. due to the influence of external temperature.

[0014] (2) The utility model can solve the problem that the power battery cannot work normally due to high temperature in a hot environment, ensuring that the battery can continue to operate efficiently and reliably. Description of the drawings:

[0015] Figure 1 This is a schematic diagram of the assembly of a battery system with fire protection, liquid cooling and heat preservation functions suitable for energy storage technology of the utility model.

[0016] Figure 2 This is a schematic diagram of the battery system with fire protection, liquid cooling and heat preservation functions suitable for energy storage technology of the utility model.

[0017] Figure 3 Assemble schematics for electrical panels and service panels.

[0018] Figure 4 Schematic diagram of the upper box.

[0019] Figure 5 This is a schematic diagram of the lower cover. Specific implementation method:

[0020] The utility model is further described below in conjunction with the accompanying drawings.

[0021] The utility model is applicable to a battery system with fire protection, liquid cooling and heat preservation functions of energy storage technology, including a lower cover 1, an upper box body 2, a module 4, an electrical board 8 and a maintenance panel 9. A heat preservation component 3 is pasted on the inner surface of the upper box body 2, a first foamed silicone seal ring 12 is pasted between the upper box body 2 and the lower cover 1, and the upper box body 2 and the lower cover 1 are fixed with bolts. A thermal conductive silicone pad 6 is padded between the module 4 and the lower cover 1, and the module 4 and the lower cover 1 are fixed with bolts. The module 4 is accommodated in the internal space of the upper box body 2. The material of the thermal conductive silicone pad 6 is pure thermal conductive silicone with a thermal conductivity of 1.5 (W / (m·K)), which transfers the heat of the module to the coolant.

[0022] The thickness of the heat-insulating component 3 is 3 mm, the material is a foamed polyurethane coating, and the thermal conductivity is 0.05 (W / (m·K)).

[0023] The maintenance panel 9 is mounted on the front surface of the electrical board 8, and a second foamed silicone seal ring 81 is pasted between the maintenance panel 9 and the electrical board 8, and a third foamed silicone seal ring 82 is pasted between the electrical board 8 and the upper box body 2, and the electrical board 8 and the upper box body 2 are fixed by bolts. The electrical board 8 and the lower cover 1 are fixed by bolts.

[0024] Module 4 includes a first battery cell and a second battery cell located on both sides, and the remaining battery cells located between the first battery cell and the second battery cell. PC sheets are respectively attached to the outer side surfaces of the first battery cell and the outer side surfaces of the second battery cell. Structural adhesive is attached to the side surfaces of the PC sheet away from the first battery cell and the second battery cell. An end plate is attached to the PC sheet through the structural adhesive. There are two end plates in total, which are respectively located on one side of the first battery cell and the second battery cell. A silicone pad is provided in the middle of each stack of two battery cells in the remaining battery cells between the first battery cell and the second battery cell, and the silicone pad is connected by adhesive.

[0025] A fire protection system 10 is fixed on the electrical panel 8, and the fire protection system 10 and the electrical panel 8 are fixed with bolts. The fire protection system 10 includes a detector and a fire extinguisher. The fire extinguishing material is an aerosol, the hygroscopicity of the solid precipitation is 0.5m / m, the insulation strength is 22MΩ, and the electrical insulation is greater than or equal to 7.5kV.

[0026] The middle of the lower cover 1 is provided with a water cooling channel extending along its length direction and a QC water cooling joint 14 intersecting the water cooling channel, and the QC water cooling joint 14 is brazed on the lower cover 1. The material of the lower cover 1 is Al 3003, and the thermal conductivity is 138 (W / (m·K)).

[0027] The utility model is applicable to a battery system with fire protection, liquid cooling and heat preservation functions of energy storage technology. It is an energy storage battery system integrating fire protection, liquid cooling and heat preservation. It can be generally applied to energy storage cabinets or container-type energy storage in various scenarios. It can solve the problem of battery cell recycling caused by battery working and ambient temperature, and ensure the safety of battery use.

[0028] The above is only a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements without departing from the principle of the present invention, and these improvements should also be regarded as within the protection scope of the present invention.

Claims

1. A battery system with fire protection, liquid cooling and heat preservation functions suitable for energy storage technology, characterized by: The utility model comprises a lower cover (1), an upper box body (2), a module (4), an electric board (8) and a maintenance panel (9), wherein the lower cover (1) and the upper box body (2) are fixed together, the module (4) is accommodated in the internal space of the upper box body (2) and the module (4) and the lower cover (1) are fixed together, the maintenance panel (9) is installed on the front surface of the electric board (8), the electric board (8) and the upper box body (2) are fixed together, the electric board (8) and the lower cover (1) are fixed together, a water cooling channel extending along the length direction thereof and a QC water cooling joint (14) interpenetrating with the water cooling channel are distributed in the middle of the lower cover (1), and a fire protection system (10) is fixed on the electric board (8).

2. The battery system with fire-fighting, liquid cooling and heat preservation functions applicable to energy storage technology according to claim 1, characterized in that: A heat-insulating component (3) is adhered to the inner surface of the upper box body (2); the heat-insulating component (3) has a thickness of 3 mm and is made of a foamed polyurethane coating with a thermal conductivity of 0.05 (W / (m·K)).

3. The battery system with fire protection, liquid cooling and heat preservation functions applicable to energy storage technology according to claim 1, characterized in that: A first foamed silicone sealing ring (12) is adhered between the upper box body (2) and the lower cover (1).

4. The battery system with fire protection, liquid cooling and heat preservation functions applicable to energy storage technology according to claim 3, characterized in that: A second foamed silicone seal ring (81) is pasted between the maintenance panel (9) and the electrical board (8), and a third foamed silicone seal ring (82) is pasted between the electrical board (8) and the upper box body (2).

5. The battery system with fire protection, liquid cooling and heat preservation functions applicable to energy storage technology according to claim 1, characterized in that: A heat-conducting silica gel pad (6) is provided between the module (4) and the lower cover (1); the heat-conducting silica gel pad (6) is made of pure heat-conducting silica gel, and has a thermal conductivity of 1.5 (W / (m·K)).

6. The battery system with fire protection, liquid cooling and heat preservation functions applicable to energy storage technology according to claim 1, characterized in that: The material of the lower cover (1) is Al 3003, and the thermal conductivity coefficient is 138 (W / (m·K)).

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