New energy automobile battery liquid cooling module

Abstract

The utility model provides a new energy automobile battery liquid cooling module belongs to new energy automobile battery management system technical field. This module passes through the outside surface area of first cooling pipeline is greater than the outside surface area of second cooling pipeline, the design that this first cooling pipeline and this second cooling pipeline open separately or open simultaneously respectively, has solved the problem that liquid cooling module cannot adjust the flow of coolant in time according to the change of battery pack cell heat production in the prior art, causes the loss of energy surplus, and further influences the problem of vehicle endurance. The system includes first cooling pipeline and second cooling pipeline, and the outside surface area of first cooling pipeline is greater than the outside surface area of second cooling pipeline; first cooling pipeline and second cooling pipeline open separately or open simultaneously respectively; first cooling pipeline and second cooling pipeline are both serpentine shape, and the outside of second cooling pipeline and the inside of first cooling pipeline are adjacent; first cooling pipeline and second cooling pipeline are embedded in the pipeline board.

Description

Technical Field

[0001] This utility model belongs to the technical field of new energy vehicle battery management system, and in particular relates to a liquid cooling module for new energy vehicle batteries. Background Technology

[0002] In new energy vehicles (NEVs), the Battery Management System (BMS) is one of the core technologies. Its role is similar to the "central nervous system" of humans, responsible for monitoring, controlling and optimizing the performance and safety of the power battery pack; ensuring that the battery pack achieves "high-efficiency energy utilization + ultimate safety guarantee" throughout its entire life cycle.

[0003] Cooling system control methods are one of the key technologies to ensure battery safety, performance and lifespan; and liquid cooling modules are more widely used than natural air cooling (low heat dissipation efficiency), phase change materials (poor long-term stability) and direct cooling plates (high cost) due to their balance between cost and heat dissipation efficiency.

[0004] During vehicle operation, as the internal resistance of the battery cell increases, the heat generated by the battery cell gradually increases. However, existing liquid cooling modules cannot adjust the heat dissipation of the cooling module in a timely manner according to the changes in the heat generated by the battery cell, resulting in excessive energy loss and thus affecting the range of new energy vehicles. Utility Model Content

[0005] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide a liquid cooling module for new energy vehicle batteries, which solves the problem that the liquid cooling module in the prior art cannot adjust the heat dissipation of the cooling module in a timely manner according to the changes in the heat generated by the battery cells, resulting in excessive energy loss and thus affecting the vehicle's range.

[0006] To achieve the above and other related objectives, this utility model provides a liquid cooling module for a new energy vehicle battery, comprising:

[0007] A first cooling pipe and a second cooling pipe, wherein the outer surface area of ​​the first cooling pipe is larger than the outer surface area of ​​the second cooling pipe;

[0008] The first cooling pipe and the second cooling pipe can be turned on individually or simultaneously;

[0009] Both the first cooling pipe and the second cooling pipe are serpentine in shape, and the outer side of the second cooling pipe and the inner side of the first cooling pipe are arranged adjacent to each other.

[0010] Both the first cooling pipe and the second cooling pipe are embedded in the pipe plate.

[0011] As described above, the liquid cooling module for a new energy vehicle battery of this utility model has at least the following beneficial effects:

[0012] This new energy vehicle battery liquid cooling module includes two cooling pipes: a first cooling pipe and a second cooling pipe. The outer surface area of ​​the first cooling pipe is larger than that of the second cooling pipe. The design allows for the individual or simultaneous operation of the first and second cooling pipes. Based on the battery's internal resistance R, the module can dynamically adjust its heat dissipation according to the amount of heat generated by the battery, thus better distributing the vehicle's energy. This solves the problem in existing technologies where liquid cooling modules cannot adjust the coolant flow in a timely manner according to changes in the heat generated by the battery cells, resulting in excessive energy loss and affecting vehicle range. Furthermore, both the first and second cooling pipes are serpentine in shape, with the outer side of the second cooling pipe adjacent to the inner side of the first cooling pipe. The design, where both the first and second cooling pipes are embedded in a pipe plate, saves installation space, making the cooling pipes modular and facilitating installation during production and overall replacement during maintenance. Attached Figure Description

[0013] Figure 1 The diagram shows the first and second cooling pipes of this utility model.

[0014] Figure 2 The diagram shown illustrates the working principle of a liquid cooling module for a new energy vehicle battery according to this utility model.

[0015] Component designation explanation

[0016] First cooling pipe 1, second cooling pipe 2, pipe plate 3, first cooling water pump 4, second cooling water pump 5, first expansion tank 6, second expansion tank 7, radiator 8, refrigerator 9, heater 10, battery 11. Detailed Implementation

[0017] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0018] Please see Figures 1 to 2It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the scope of this invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of this invention, should still fall within the scope of the technical content disclosed in this invention. Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and are not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0019] The following embodiments are for illustrative purposes only. These embodiments can be combined and are not limited to the content shown in any single embodiment below.

[0020] Please see Figure 1 and Figure 2 This utility model provides a liquid cooling module for a new energy vehicle battery, including a first cooling pipe 1 and a second cooling pipe 2. The outer surface area of ​​the first cooling pipe 1 is larger than that of the second cooling pipe 2. The first cooling pipe 1 and the second cooling pipe 2 can be turned on individually or simultaneously. The first cooling pipe 1, the second cooling pipe 2, or both cooling pipes can be turned on simultaneously according to the resistance value R of the battery 11. That is, the heat dissipation of the liquid cooling module can be dynamically adjusted according to the amount of heat generated by the battery 11, so as to better distribute the energy of the vehicle. This solves the problem in the prior art that the liquid cooling module cannot adjust the flow rate of the coolant in time according to the changes in the heat generated by the battery cells, resulting in excess energy loss and affecting the vehicle's range.

[0021] The opening and closing of the first cooling pipe 1 and the second cooling pipe 2 can be controlled by using a pneumatic ball valve or a pneumatic butterfly valve in conjunction with a signal receiver. Of course, there are also better options, which will be introduced below.

[0022] In another implementation, please refer to Figure 1 Both the first cooling pipe 1 and the second cooling pipe 2 are serpentine in shape, and the outer side of the second cooling pipe 2 and the inner side of the first cooling pipe 1 are arranged adjacent to each other; thus achieving the purpose of saving installation space.

[0023] In another implementation, please refer to Figure 1 The first cooling pipe 1 and the second cooling pipe 2 are both embedded in the pipe plate 3, making the cooling pipe modular, which facilitates installation during production and overall replacement during maintenance.

[0024] In another implementation, please refer to Figure 1 The outer surface area of ​​the first cooling pipe 1 is twice the outer surface area of ​​the second cooling pipe 2; that is, if the heat dissipation area of ​​the second cooling pipe 2 when it is turned on is A, the heat dissipation area of ​​the first cooling pipe 1 when it is turned on is AA, and the heat dissipation area of ​​the first cooling pipe 1 and the second cooling pipe 2 when they are turned on at the same time is AAA, so that the cooling module can accurately remove the heat dissipated by the internal resistance of the battery 11.

[0025] In another implementation, please refer to Figure 1 and Figure 2 A first cooling water pump 4 is installed on the first cooling pipe 1, and a second cooling water pump 5 is installed on the second cooling pipe 2; this ensures that the coolant can flow through the first cooling pipe 1 and the second cooling pipe 2 in a timely and sufficient manner, so as to achieve the purpose of fully cooling the battery 11.

[0026] In another implementation, please refer to Figure 1 and Figure 2 The first cooling pipe 1 is connected in parallel to the first expansion tank 6, and the second cooling pipe 2 is connected in parallel to the second expansion tank 7; because the coolant expands when heated and contracts when cooled. The expansion tank acts as a buffer container, receiving excess liquid that overflows due to temperature rise, and replenishing it back to the main circulation system after cooling.

[0027] In another implementation, please refer to Figure 1 and Figure 2 The first cooling pipe 1 is connected to the radiator 8 of the new energy vehicle, and the second cooling pipe 2 is connected to the refrigerator 9 of the new energy vehicle; that is, the coolant in the first cooling pipe 1 exchanges heat with the radiator 8 of the new energy vehicle; the coolant in the second cooling pipe 2 exchanges heat with the refrigerator 9 of the new energy vehicle; ensuring that the temperature of the coolant in the first cooling pipe 1 and the second cooling pipe 2 is reduced in time.

[0028] In another implementation, please refer to Figure 1 and Figure 2 The second cooling pipe 2 is also connected to the heater 10 of the new energy vehicle, that is, the second cooling pipe 2 also exchanges heat with the heater 10 of the new energy vehicle; after the coolant in the second cooling pipe 2 flows through the battery 11, it first flows through the heater 10 and then flows through the refrigerator 9 for cooling; the heat from the battery 11 brought by the coolant in the second cooling pipe 2 is used to supply the heater 10, thereby saving energy.

[0029] In another implementation, please refer to Figure 1 It also includes a solenoid valve for controlling the opening and closing of the first cooling pipe 1 and the second cooling pipe 2, so as to achieve precise control of the opening and closing of the first cooling pipe 1 and the second cooling pipe 2.

[0030] In summary, this utility model, by including two cooling pipes, namely a first cooling pipe 1 and a second cooling pipe 2, wherein the outer surface area of ​​the first cooling pipe 1 is larger than that of the second cooling pipe 2, and by designing that the first cooling pipe 1 and the second cooling pipe 2 can be opened individually or simultaneously, can select to open the first cooling pipe 1, the second cooling pipe 2, or both cooling pipes simultaneously according to the resistance value R of the battery 11. That is, it dynamically adjusts the heat dissipation of the liquid cooling module according to the amount of heat generated by the battery 11, thereby better distributing the vehicle's energy. This solves the problem in the prior art that the liquid cooling module cannot adjust the coolant flow in time according to the changes in the heat generated by the battery cells of the 11, resulting in excess energy loss and affecting the vehicle's range. At the same time, by designing that both the first cooling pipe 1 and the second cooling pipe 2 are serpentine in shape, and the outer side of the second cooling pipe 2 is adjacent to the inner side of the first cooling pipe 1, and that both the first cooling pipe 1 and the second cooling pipe 2 are embedded in the pipe plate 3, it saves installation space, makes the cooling pipes modular, and facilitates installation during production and overall replacement during maintenance. Therefore, this utility model effectively overcomes the shortcomings of the prior art and has high industrial application value.

[0031] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A liquid cooling module for a new energy vehicle battery, characterized in that, include: A first cooling pipe and a second cooling pipe, wherein the outer surface area of ​​the first cooling pipe is larger than the outer surface area of ​​the second cooling pipe; The first cooling pipe and the second cooling pipe can be turned on individually or simultaneously; Both the first cooling pipe and the second cooling pipe are serpentine in shape, and the outer side of the second cooling pipe and the inner side of the first cooling pipe are arranged adjacent to each other. Both the first cooling pipe and the second cooling pipe are embedded in the pipe plate.

2. The liquid cooling module for a new energy vehicle battery according to claim 1, characterized in that: The outer surface area of ​​the first cooling pipe is twice that of the second cooling pipe.

3. The liquid cooling module for a new energy vehicle battery according to claim 1, characterized in that: A first cooling water pump is installed on the first cooling pipe, and a second cooling water pump is installed on the second cooling pipe.

4. A liquid cooling module for a new energy vehicle battery according to claim 1, characterized in that: The first cooling pipe is connected in parallel to a first expansion tank, and the second cooling pipe is connected in parallel to a second expansion tank.

5. A liquid cooling module for a new energy vehicle battery according to claim 1, characterized in that: The first cooling pipe is connected to the radiator of the new energy vehicle; The second cooling pipe is connected to the refrigeration unit of the new energy vehicle.

6. A liquid cooling module for a new energy vehicle battery according to claim 5, characterized in that: The second cooling pipe is also connected to the heater of the new energy vehicle; After the coolant in the second cooling pipe flows through the battery, it first flows through the heater and then through the refrigerator.

7. A liquid cooling module for a new energy vehicle battery according to claim 1, characterized in that: It also includes a solenoid valve for controlling the opening and closing of the first cooling pipe and the second cooling pipe.

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