Temperature control water pipe structure of power battery

Abstract

The utility model belongs to the field of new energy engineering machinery, and discloses a temperature control water pipe structure of a power battery. Comprising a water tank, a heat management unit and a power battery pack which form a circulation loop, liquid flows to the heat management unit from the water tank to be heated or refrigerated and then flows to the power battery pack to be correspondingly refrigerated or heated, and then the liquid circulates back to the water tank; the pipeline used for forming the circulation loop is a forming pipeline. The temperature control water pipe arrangement structure not only can be applied to a 282kwh vehicle model, but also has more forming pipes which can be universally used in vehicle models carrying other electric quantities, the designed position is convenient to install and debug, and the installation efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the field of new energy construction machinery, and relates to a temperature control water pipe structure for a power battery of an electric loader. Background Art

[0002] At present, due to the rapid development of technology, the market for electric loaders has been further expanded, and the requirements for electric loaders are also getting higher and higher. The power battery carried by an electric loader is particularly sensitive to temperature. In order to keep the power battery working at a suitable temperature all the time, the temperature control water pipe between the batteries is particularly crucial. However, at present, the layout of the temperature control water pipes of most electric loaders on the market is relatively random, and the routing is not very reasonable. Summary of the Utility Model

[0003] In order to solve the above technical problems, the utility model provides a temperature control water pipe structure for a power battery.

[0004] The technical solution adopted by the utility model to solve the above problems is: to provide a temperature control water pipe structure for a power battery, including a water tank, a heat management unit and a power battery pack that form a circulation loop. The liquid flows from the water tank to the heat management unit for heating or cooling, and then flows to the power battery pack for corresponding cooling or heating, and then the liquid circulates back to the water tank;

[0005] The pipeline used to form the circulation loop is a formed pipeline.

[0006] According to the utility model, further, the power battery pack has a battery control system, and the battery control system is electrically connected to the heat management unit to control the heat management unit to heat or cool.

[0007] According to the utility model, further, the water tank has an outlet, which is communicated with a first formed pipeline, and the other end of the first formed pipeline is communicated to the heat management unit.

[0008] According to the utility model, further, the heat management unit has a water outlet, and the water outlet is communicated with a temperature control main pipe. The temperature control main pipe has two branches that are not opened and closed at the same time, and the other ends of the two branches are both communicated with the power battery pack to supply coolant or heating liquid to the power battery pack.

[0009] According to the utility model, further, the power battery pack has a liquid discharge port, and the liquid discharge port is communicated with a second formed pipe, and one end of the second formed pipe is communicated with the water tank to circulate the liquid acting on the power battery pack back into the water tank.

[0010] Compared with the prior art, the utility model has the following beneficial effects: The layout structure of the temperature control water pipe can not only be applied to models with a capacity of 282 kWh, but also many formed pipes are universal in models with other battery capacities, and the designed positions are convenient for installation and debugging, improving the installation efficiency.

[0011] By using formed water pipes, the disadvantages of coiled water pipes that are not easily bent are avoided. The layout is compact and the installation is convenient. The formed water pipes at the water inlet and outlet of the water-cooled unit can be applied to various models, with a high degree of generalization. Brief Description of the Drawings

[0012] Figure 1 It is a schematic structural diagram of a temperature control water pipe structure for a power battery of the present utility model;

[0013] Figure 2 It is a schematic diagram of the pipeline distribution of the present utility model.

[0014] Wherein:

[0015] 1 - Thermal management machine, 2 - First formed pipe, 3 - Water tank, 4 - Second formed pipe, 5 - Temperature control main pipe, 51 - First temperature control pipeline, 52 - Second temperature control pipeline. Detailed Embodiment

[0016] The present utility model will be further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present utility model and not to limit the scope of the present utility model. In addition, it should be understood that after reading the content taught by the present utility model, those skilled in the art can make various changes or modifications to the present utility model, and these equivalent forms also fall within the scope defined by the appended claims of this application.

[0017] Such as Figure 1 And Figure 2As shown in the figure, the utility model provides a temperature control water pipe structure for power batteries, which is used to supply liquid to a 282 kWh power battery of an electric wheel loader and adjust the working temperature of the power battery. It includes a water tank 3 for storing coolant. The outlet of the water tank 3 is connected to a first formed pipe 2, and the other end of the first formed pipe 2 is connected to the water inlet of a heat management unit 1. The coolant stored inside the water tank 3 flows to the heat management unit 1 via the first formed pipe 2. The heat management unit 1 is electrically connected to the control system of the power battery pack. The heat management unit 1 selects heating or heat cooling according to the signal sent by the control system of the power battery pack. The water outlet of the heat management unit 1 is connected to a temperature control main pipe 5. The temperature control main pipe 5 is provided with a three-way valve (not shown in the figure), which divides the temperature control main pipe 5 into two branches, namely, a first temperature control pipeline 51 for circulating cooling liquid and a second temperature control pipeline 52 for circulating heating liquid. The other ends of the first temperature control pipeline 51 and the second temperature control pipeline 52 are both connected to the power battery pack. The first temperature control pipeline 51 and the second temperature control pipeline 52 are not opened or closed simultaneously, and are used to supply refrigerant or heating agent to the power battery pack to achieve the purpose of controlling the temperature of the power battery pack. The power battery pack also has a liquid discharge port, and the liquid discharge port is connected to a second formed pipe 4. The second formed pipe 4 is connected to the liquid inlet of the water tank 3 to form a circulation loop. The water after heating or cooling the power battery pack circulates back into the water tank 3 via the second formed pipe 4 to realize the reuse of the liquid. Preferably, the diameter of the temperature control main pipe 5 is 25 mm, and the diameters of the first temperature control pipeline 51 and the second temperature control pipeline 52 are 16 mm. The diameter of the water cooling pipeline is larger than that of the battery, so that the coolant can have greater pressure when flowing through the water cooling unit to the battery, improving the heat management efficiency.

[0018] In this embodiment, ball valves (not shown in the figure) are respectively arranged on the first temperature control pipeline 51 and the second temperature control pipeline 52, which are used to discharge the gas in the loop to ensure the normal operation of the system.

[0019] Embodiment 1

[0020] The control system of the power battery pack detects that the temperature of the power battery pack is too high and exceeds the preset temperature, and transmits the signal to the heat management unit 1. The heat management unit 1 cools the liquid inside it, and at the same time closes the second temperature control pipeline 52 and opens the first temperature control pipeline 51. The cooled liquid flows to the power battery pack via the first temperature control pipeline 51 to cool the power battery pack. After the temperature drops to the preset value, the liquid returns to the water tank 3 via the second formed pipe 4 and continues to circulate.

[0021] Embodiment 2

[0022] The control system of the power battery pack detects that the temperature of the power battery pack is too low, lower than the preset temperature, and transmits a signal to the thermal management unit 1. The thermal management unit 1 heats the liquid inside it, closes the first temperature control pipeline 51, and opens the second temperature control pipeline 52. The heated liquid flows through the second temperature control pipeline 52 to the power battery pack to raise the temperature of the power battery pack. After the temperature rises to the preset value, the liquid returns to the water tank 3 through the second forming pipe 4 and continues to circulate.

[0023] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection required by the present invention is defined by the appended claims and their equivalents.

Claims

1. A temperature control water pipe structure for a power battery, characterized in that: It includes a water tank, a thermal management unit, and a power battery pack that form a circulation loop. The liquid flows from the water tank to the thermal management unit for heating or cooling, and then flows to the power battery pack for corresponding cooling or heating, and then the liquid circulates back to the water tank. The pipeline used to form the circulation loop is a formed pipeline.

2. The temperature control water pipe structure of a power battery according to claim 1, characterized in that: The power battery pack has a battery control system, and the battery control system is electrically connected to the thermal management unit to control the heating or cooling of the thermal management unit.

3. The temperature control water pipe structure of a power battery according to claim 1, characterized in that: The water tank has an outlet, and the outlet is connected to a first formed pipeline, and the other end of the first formed pipeline is connected to the thermal management unit.

4. A temperature control water pipe structure for a power battery according to claim 1 or 3, characterized in that: The thermal management unit has a water outlet, and the water outlet is connected to a temperature control main pipe. The temperature control main pipe has two branches that do not open and close simultaneously, and the other ends of the two branches are both connected to the power battery pack to supply cooling liquid or heating liquid to the power battery pack.

5. The temperature control water pipe structure of a power battery according to claim 1, characterized in that: The power battery pack has a liquid discharge port, and the liquid discharge port is connected to a second formed pipe, and one end of the second formed pipe is connected to the water tank to circulate the liquid acting on the power battery pack into the water tank.

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