Oil liquid cooling and heat dissipation system for oil liquid immersed type battery pack
By designing an oil-cooled cooling system, the problem of insufficient heat dissipation of oil-immersed battery packs is solved, and rapid cooling and uniform cooling are achieved to ensure the safety and stability of the energy storage system.
Patent Information
- Application Number
- CN202422287313.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-19
- Publication Date
- 2025-08-01
- Estimated Expiration
- 2034-09-19
AI Technical Summary
The existing oil-immersed battery packs have insufficient heat dissipation, resulting in excessive temperature, abnormal use and safety hazards.
An oil-cooled cooling system including an oil tank, a shielded pump, a tube cooler and a plate heat exchanger was designed. The oil-cooling channel was formed by connecting the pipes, and the oil-cooling pipes were used to achieve rapid cooling and uniform cooling of the oil.
It realizes rapid cooling of oil-immersed battery packs, ensures the normal use and operation safety of the energy storage system, avoids cavitation problems caused by air pumps caused by shielded pumps, and has a simple structure and a small footprint.
Smart Images
Figure CN223181222U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an oil cooling and heat dissipation system for an oil-immersed battery pack. Background Art
[0002] Energy storage systems have been widely used, and the performance and safety of energy storage systems are also the most concerned aspects. The performance and safety of an energy storage system depend on the performance and safety of the battery pack used in the energy storage system. There are more and more types of battery packs used in energy storage systems, such as oil-immersed battery packs, etc. To ensure the performance and safety of the battery pack used in the energy storage system, first of all, it is necessary to ensure that the heat dissipation of the battery pack meets the requirements to avoid abnormal use problems and safety problems caused by too high a temperature of the battery pack. For an oil-immersed battery pack, it is necessary to ensure that the oil can dissipate heat quickly to reduce the oil temperature, so as to ensure that the temperature of the battery pack is quickly reduced during the circulation process of the oil. Therefore, how to quickly reduce the temperature of the oil circulating in the oil-immersed battery pack is a major research topic at present. Content of the Utility Model
[0003] The utility model aims to provide an oil cooling and heat dissipation system for an oil-immersed battery pack, which has a simple structure, is convenient to use, and can quickly reduce the temperature of the oil used in the oil-immersed battery pack.
[0004] The utility model is realized through the following scheme:
[0005] An oil cooling and heat dissipation system for an oil-immersed battery pack includes an oil tank, a canned motor pump, a tube cooler, a plate heat exchanger, and an oil outlet pipe. The oil outlet of the oil tank, the canned motor pump, the tube cooler, and the plate heat exchanger are sequentially connected through connecting pipes to form an oil cooling channel. The oil outlet pipe is connected to the outlet of the plate heat exchanger. A filter is provided on the connecting pipe between the oil outlet of the oil tank and the canned motor pump. The viscosity of the oil used in the oil-immersed battery pack is relatively large and the flow rate is relatively large. Therefore, when selecting a plate heat exchanger, a plate heat exchanger with a smooth inner wall surface of the pipe and a relatively large pipe diameter is generally selected. The specific size of the pipe diameter of the plate heat exchanger can be selected according to needs to meet the requirement that the oil used in the oil-immersed battery pack can smoothly pass through the plate heat exchanger and quickly cool down. The size of the pipe diameter can generally be selected as 32 mm.
[0006] Further, a first pressure sensor is provided at the position of the connecting pipe between the oil outlet of the oil tank and the canned motor pump, which is located between the oil outlet of the oil tank and the filter. A second pressure sensor is provided on the oil outlet pipe. The first pressure sensor is used to measure the pressure value of the oil in the connecting pipe between the oil outlet of the oil tank and the canned motor pump, and the second pressure sensor is used to measure the pressure value of the oil in the oil outlet pipe.
[0007] Further, a flowmeter is provided at a position between the plate heat exchanger and the second pressure sensor on the oil outflow pipeline. The setting of the flowmeter can be used to measure the flow rate of the oil flowing from the plate heat exchanger into the oil outflow pipeline.
[0008] Further, an oil replenishment pipeline is connected at a position between the filter and the canned motor pump on the connecting pipeline between the oil outlet of the fuel tank and the canned motor pump. The setting of the oil replenishment pipeline can replenish oil to the oil-immersed battery pack as needed. Generally, a valve is provided on the oil replenishment pipeline, and the valve can be opened when oil needs to be replenished.
[0009] The oil cooling and heat dissipation system for an oil-immersed battery pack of the present utility model has a simple structure and is convenient to use. It can quickly and effectively reduce the temperature of the oil used in the oil-immersed battery pack, thereby effectively reducing the temperature of the oil-immersed battery pack, ensuring the normal use of the entire energy storage system, and improving the operation safety of the entire energy storage system. In the present utility model, a fuel tank is provided, and the oil flowing out of the corresponding oil-immersed battery pack in a cycle can be first concentrated in the fuel tank and then pumped out by the canned motor pump into the entire oil cooling channel for cooling. In this way, the uniformity of the oil temperature can be effectively ensured, and the cavitation caused by the canned motor pump running dry can be avoided; the setting of the canned motor pump has a low cost and can make the structure of the entire oil cooling and heat dissipation system more compact, reducing the floor area. Description of the Drawings
[0010] Figure 1 It is a schematic structural diagram of the oil cooling and heat dissipation system for an oil-immersed battery pack in Embodiment 1. Detailed Embodiments
[0011] The embodiments are only used to illustrate an implementation manner of the present utility model and are not restrictive descriptions of the protection scope of the present utility model.
[0012] Embodiment 1
[0013] An oil cooling and heat dissipation system for an oil-immersed battery pack includes a fuel tank 1, a canned motor pump 2, a tube cooler 3, a plate heat exchanger 4, and an oil outflow pipeline 5. In this embodiment, the plate heat exchanger 4 is selected with a smooth inner wall surface of the pipeline and a pipeline diameter of 32 mm. The oil outlet of the fuel tank 1, the canned motor pump 2, the tube cooler 3, and the plate heat exchanger 4 are sequentially connected through a connecting pipeline 6 to form an oil cooling channel. A first pressure sensor 7 and a filter 8 are sequentially arranged on the connecting pipeline 6 between the oil outlet of the fuel tank 1 and the canned motor pump 2 starting from a position close to the oil outlet of the fuel tank 1. An oil replenishment pipeline 9 is connected at a position between the filter 8 and the canned motor pump 2 on the connecting pipeline 6 between the oil outlet of the fuel tank 1 and the canned motor pump 2. A valve is provided on the oil replenishment pipeline 9 ( Figure 1(The valve is not shown in the figure), the oil outflow pipeline 5 is connected to the outlet of the plate heat exchanger 4. A second pressure sensor 10 is provided on the oil outflow pipeline 5, and a flowmeter 11 is provided at the position between the plate heat exchanger 4 and the second pressure sensor 10 on the oil outflow pipeline 5.
[0014] During specific use, the inlet of the oil tank of the oil-cooled heat dissipation system for the oil-immersed battery pack is connected to the outlet of the oil circulation pipeline of the corresponding oil-immersed battery pack, and the oil outflow pipeline of the oil-cooled heat dissipation system for the oil-immersed battery pack is connected to the inlet of the oil circulation pipeline of the corresponding oil-immersed battery pack. During the circulation of the oil in the oil-immersed battery pack, the oil in the oil-immersed battery pack flows into the oil tank of the oil-cooled heat dissipation system for the oil-immersed battery pack from the outlet of the oil circulation pipeline for collection. Then, the oil in the oil tank is pumped out by the canned motor pump and flows through the tube cooler and the plate heat exchanger in sequence, that is, the oil flows through the entire oil cooling channel. Finally, the oil after heat dissipation and cooling flows back to the inlet of the oil circulation pipeline of the corresponding oil-immersed battery pack through the oil outflow pipeline for the next oil circulation. Repeating like this can reduce the temperature of the corresponding oil-immersed battery pack. During the oil heat dissipation and cooling process, the first pressure sensor, the second pressure sensor, and the flowmeter all work, and the measured data is transmitted back to the data monitoring device in real time. If the data measured by the first pressure sensor is lower than the preset value, the oil supply pipeline of the oil-cooled heat dissipation system for the oil-immersed battery pack is connected to the outlet of the oil supply tank, and the valve on the oil supply pipeline is opened to allow the oil in the oil supply tank to be supplemented until the data measured by the flowmeter or the second pressure sensor reaches the preset value. Then, the valve on the oil supply pipeline is closed, and the oil supply tank is disconnected from the oil supply pipeline.
Claims
1. An oil-cooling and heat-dissipating system for an oil-immersed battery pack, characterized in that: It includes an oil tank, a canned motor pump, a tubular cooler, a plate heat exchanger and an oil outflow pipeline. The oil outlet of the oil tank, the canned motor pump, the tubular cooler and the plate heat exchanger are sequentially connected by connecting pipelines to form an oil cooling channel. The oil outflow pipeline is connected to the outlet of the plate heat exchanger. A filter is provided on the connecting pipeline between the oil outlet of the oil tank and the canned motor pump.
2. The oil cooling and heat dissipation system for an oil-immersed battery pack as described in claim 1, wherein: A first pressure sensor is provided at a position on the connecting pipeline between the oil outlet of the oil tank and the canned motor pump, which is located between the oil outlet of the oil tank and the filter. A second pressure sensor is provided on the oil outflow pipeline.
3. The oil cooling and heat dissipation system for an oil-immersed battery pack according to claim 2, wherein: A flowmeter is provided at a position on the oil outflow pipeline, which is located between the plate heat exchanger and the second pressure sensor.
4. The oil cooling and heat dissipation system for an oil-immersed battery pack according to any one of claims 1 to 3, characterized in that: An oil replenishment pipeline is connected at a position on the connecting pipeline between the oil outlet of the oil tank and the canned motor pump, which is located between the filter and the canned motor pump.