Immersed battery cooling device and cooling liquid flow rate adjusting method based on immersed battery cooling device

Abstract

The invention discloses an immersed battery cooling device and a cooling liquid flow rate adjusting method based on the immersed battery cooling device, and belongs to the field of batteries, the device comprises a battery shell, a liquid inlet, a liquid outlet, a lithium ion battery array and a transmission array; the lithium ion battery array is fixed on the inner side of the bottom surface of the battery shell, and the transmission array is embedded into a groove of the lithium ion battery array; the transmission array comprises a plurality of transmission structures, each transmission structure is composed of a coil, a permanent magnet, an eccentric mass block and a transmission shell, and each transmission structure is connected with an alternating current power supply; the transmission structure is used for receiving alternating current output by an alternating current power supply, so that an internal coil generates a periodically changing magnetic field to drive an internal permanent magnet to drive an eccentric mass block to move, and the flow speed of cooling liquid flowing through the transmission structure is changed. By implementing the application, the problem of non-uniform temperature distribution of the battery caused by non-uniform flow of the cooling liquid in the prior art can be solved.

Description

Technical Field

[0001] This invention relates to the field of batteries, and more particularly to an immersion battery cooling device and a method for adjusting the coolant flow rate based on the immersion battery cooling device. Background Technology

[0002] With the ongoing global energy transition, electrochemical energy storage power stations, primarily based on lithium-ion batteries, are playing an increasingly crucial role in the stable operation of the power system as a core support for the development of new energy sources.

[0003] However, the internal chemical reactions and compact cell arrangement of lithium-ion batteries make them prone to uneven heat distribution and difficulty in heat dissipation. Although the currently widely used immersion liquid cooling technology improves thermal management efficiency by immersing the battery pack in coolant, it is limited by the flow characteristics of the coolant and exposes the prominent problem of uneven battery temperature distribution caused by uneven coolant flow in actual operation. Summary of the Invention

[0004] This invention provides an immersion battery cooling device and a method for adjusting the coolant flow rate based on the immersion battery cooling device. The device can solve the problem of uneven battery temperature distribution caused by uneven coolant flow in the prior art.

[0005] One embodiment of the present invention provides an immersion battery cooling device, comprising: a battery casing, a liquid inlet, a liquid outlet, a lithium-ion battery array, and a transmission array;

[0006] The liquid inlet is located on the first side of the battery casing, and the liquid outlet is located on the second side of the battery casing. The first side and the second side are parallel to each other.

[0007] The transmission array includes several transmission structures, each of which consists of a coil, a permanent magnet, an eccentric mass block and a transmission housing, and each of the transmission structures is connected to an AC power supply.

[0008] The lithium-ion battery array is fixed to the inner side of the bottom surface of the battery casing, and the transmission array is embedded in the groove of the lithium-ion battery array;

[0009] The transmission structure is used to receive alternating current output from an AC power source, so as to generate a periodically changing magnetic field in the internal coil, thereby driving the internal permanent magnet to move the eccentric mass block, thus changing the flow rate of the coolant flowing through the transmission structure; wherein the coolant flows in from the inlet and flows out from the outlet.

[0010] Furthermore, the transmission structure includes several honeycomb-shaped transmission structures; each of the honeycomb-shaped transmission structures is connected by a connecting rod.

[0011] The honeycomb transmission structure includes a first coil, a first permanent magnet, a first eccentric mass block, and a honeycomb-shaped regular hexagonal transmission housing.

[0012] Each honeycomb transmission structure is fixed to the bottom of the battery casing, and each honeycomb transmission structure is connected to an AC power source.

[0013] Furthermore, the transmission structure includes several square transmission structures;

[0014] The square transmission structure includes a second coil, a second permanent magnet, a second eccentric mass block, and a square transmission housing, which are fixed to the bottom of the battery housing, and each square transmission structure is connected to an AC power source.

[0015] Furthermore, the hexagonal walls of the honeycomb-shaped hexagonal transmission housing are made of nickel-titanium shape memory alloy.

[0016] Furthermore, the immersion battery cooling device further includes: a frequency modulation and voltage regulation module and several temperature sensors; the frequency modulation and voltage regulation module is connected to the AC power supply, and the temperature sensors are connected to the frequency modulation and voltage regulation module;

[0017] The frequency and voltage regulation module is used to receive the real-time temperature collected by the temperature sensor and adjust the driving parameters of the AC power supply according to the real-time temperature.

[0018] Furthermore, each of the aforementioned transmission structures has at least one built-in temperature sensor; the lithium-ion battery array is distributed with several temperature sensors, each of which is attached to the surface of the lithium-ion battery in the lithium-ion battery array.

[0019] The step of receiving the real-time temperature collected by the temperature sensor and adjusting the driving parameters of the AC power supply according to the real-time temperature includes:

[0020] The system receives real-time coolant temperature data from a temperature sensor built into the transmission structure and real-time battery temperature data from a temperature sensor attached to the surface of the lithium-ion battery, and adjusts the drive parameters of the AC power supply based on the real-time coolant temperature and the real-time battery temperature.

[0021] Furthermore, the driving parameters include output voltage and frequency.

[0022] An embodiment of the present invention also provides a method for regulating the coolant flow rate based on an immersion battery cooling device, applicable to immersion battery cooling devices, comprising:

[0023] Receive the real-time temperature of the target as collected by the target temperature sensor;

[0024] Based on the target real-time temperature, determine the target driving parameters, and generate a control signal based on the target driving parameters;

[0025] The control signal is sent to the AC power supply corresponding to the target temperature sensor, so that the AC power supply outputs power according to the target output voltage and the target frequency, thereby driving the permanent magnet in the transmission structure to move the eccentric mass block in the transmission structure, so that the flow rate of the coolant flowing through the transmission structure changes.

[0026] Furthermore, the target real-time temperature includes the target real-time coolant temperature and the target real-time battery temperature;

[0027] The step of determining target driving parameters based on the target real-time temperature and generating control signals based on the target driving parameters includes:

[0028] Based on the target real-time coolant temperature and the target real-time battery temperature, target driving parameters are determined, and based on the target driving parameters, a control signal for controlling the AC power supply corresponding to the target temperature sensor is generated; wherein, the target driving parameters include target output voltage and target frequency.

[0029] The following benefits can be obtained by implementing the present invention:

[0030] This invention provides an immersion battery cooling device and a method for regulating the coolant flow rate based on the immersion battery cooling device. The inlet of the device is located at the bottom of the first side of the battery casing, and the outlet is located at the top of the second side. Therefore, the coolant can form an upward gradient flow during the flow process, expanding the contact area with the battery pack with the help of gravity and flow inertia, extending the heat exchange path, and effectively carrying away the heat accumulated at the bottom of the battery upwards, further enhancing the heat dissipation effect on the bottom and corner areas of the battery pack. In addition, each of the transmission structures consists of a coil, a permanent magnet, and... The system consists of an eccentric mass block and a transmission housing, with each transmission structure connected to an AC power source. Dynamic adjustment of the coolant flow rate is achieved through distributed independent control. When each transmission structure receives alternating current from the AC power source, the periodically changing magnetic field generated by its internal coil drives the permanent magnet to move the eccentric mass block in reciprocating motion. This motion can frequently disturb the coolant flow, effectively disrupting the boundary layer and enhancing turbulence intensity, thereby increasing the convective heat transfer coefficient between the coolant and the battery pack surface. This solves the problem of uneven battery temperature distribution caused by uneven coolant flow in traditional liquid cooling systems. Attached Figure Description

[0031] To more clearly illustrate the technical solution of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of an immersion battery cooling device provided in one embodiment of this application;

[0033] Figure 2 This is a top view of an immersion battery cooling device provided in one embodiment of this application;

[0034] Figure 3 This is a top front view of an immersion battery cooling device provided in one embodiment of this application;

[0035] Figure 4 This is a schematic diagram of a honeycomb transmission structure provided in a certain embodiment of this application;

[0036] Figure 5 This is a side view of a honeycomb transmission structure provided in one embodiment of this application;

[0037] Figure 6 This is a schematic diagram of a square transmission structure provided in a certain embodiment of this application;

[0038] Figure 7 This is a schematic flowchart of a method for adjusting the coolant flow rate based on an immersion battery cooling device according to a certain embodiment of this application.

[0039] The reference numerals for the accompanying drawings in the specification are as follows:

[0040] Battery casing 1, liquid inlet 2, liquid outlet 3, lithium-ion battery array 4, transmission array 5, honeycomb transmission structure 501, first coil 5011, first permanent magnet 5012, first eccentric mass block 5013, honeycomb hexagonal transmission casing 5014, connecting rod 5015, square transmission structure 502, second coil 5021, second permanent magnet 5022, second eccentric mass block 5023, square transmission casing 5024. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0042] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0043] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0044] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0045] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0046] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0047] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0048] Example 1

[0049] See also Figure 1and Figure 2 To address the problem of uneven battery temperature distribution caused by uneven coolant flow in existing technologies, an embodiment of the present invention provides an immersion battery cooling device, comprising: a battery casing 1, a liquid inlet 2, a liquid outlet 3, a lithium-ion battery array 4, and a transmission array 5.

[0050] The transmission array 5 includes several transmission structures, each of which consists of a coil, a permanent magnet, an eccentric mass block and a transmission housing, and each of the transmission structures is connected to an AC power supply.

[0051] The lithium-ion battery array 4 is fixed to the inner side of the bottom surface of the battery casing 1, and the transmission array 5 is embedded in the groove of the lithium-ion battery array 4;

[0052] The transmission structure is used to receive alternating current output from an AC power source, so as to generate a periodically changing magnetic field in the internal coil, thereby driving the internal permanent magnet to move the eccentric mass block, thus changing the flow rate of the coolant flowing through the transmission structure; wherein, the coolant flows in from the inlet 2 and flows out from the outlet 3.

[0053] In a preferred embodiment, the liquid inlet 2 is disposed on the first side of the battery casing 1, and the liquid inlet 2 is located at the bottom of the first side; the liquid outlet 3 is disposed on the second side of the battery casing 1, and the liquid outlet 3 is located at the top of the second side; the first side and the second side are parallel to each other;

[0054] Specifically, since the liquid inlet 2 is located on the first side of the battery casing 1 and the liquid outlet 3 is located on the second side of the battery casing 1, and the first side and the second side are parallel to each other, the coolant can form a through-flow convection path inside the battery casing 1, ensuring that the coolant evenly covers the bottom and side areas of the battery pack, reducing dead zones and improving overall heat exchange efficiency; see also Figure 1 The inlet 2 is located at the bottom of the first side of the battery casing 1, and the outlet 3 is located at the top of the second side. Therefore, the coolant can form a gradient upward flow from bottom to top during the flow process. With the help of gravity and flow inertia, the contact area with the battery pack is expanded, the heat exchange path is extended, and the heat accumulated at the bottom of the battery is effectively carried upward to discharge, further enhancing the heat dissipation effect on the bottom and corner areas of the battery pack.

[0055] See also Figure 3Specifically, the transmission array 5 includes several transmission structures, each of which consists of a coil, a permanent magnet, an eccentric mass block, and a transmission housing, and each transmission structure is connected to an AC power supply. Dynamic adjustment of the coolant flow rate is achieved through distributed independent control. When each transmission structure receives alternating current from the AC power supply, the periodically changing magnetic field generated by its internal coil drives the permanent magnet to move the eccentric mass block in reciprocating motion. This motion can frequently disturb the coolant flow state, effectively disrupting the boundary layer and enhancing turbulence intensity, thereby increasing the convective heat transfer coefficient between the coolant and the battery pack surface. Furthermore, since each transmission structure is equipped with an independent power supply, the coolant flow rate in each region can be adjusted in real time according to the temperature distribution on the battery pack surface and the coolant temperature distribution. For high-temperature regions, the disturbance frequency and flow rate are increased to form an adaptive cooling micro-circulation network, ensuring that the temperature difference across the entire battery pack is controlled within a reasonable fluctuation range. This solves the problem of uneven temperature distribution caused by dead zones in the coolant flow in traditional liquid cooling systems.

[0056] Specifically, the selection of coolant should take into account performance indicators such as thermal conductivity, specific heat capacity, insulation and fluidity, the heat generation requirements of the battery and the operating environment temperature, etc. Liquids such as silicone oil, esters and hydrocarbon oils can be selected, and there are no restrictions here.

[0057] In a preferred embodiment, the transmission structure includes a plurality of honeycomb transmission structures 501; each of the honeycomb transmission structures 501 is connected to the other by a connecting rod 5015.

[0058] The honeycomb transmission structure 501 includes a first coil 5011, a first permanent magnet 5012, a first eccentric mass block 5013, and a honeycomb hexagonal transmission housing 5014.

[0059] Each honeycomb transmission structure 501 is fixed to the bottom of the battery casing 1, and each honeycomb transmission structure 501 is connected to an AC power source.

[0060] Specifically, see Figure 4 The honeycomb transmission structure 501 consists of a first coil 5011, a first permanent magnet 5012, a first eccentric mass block 5013, and a honeycomb-shaped hexagonal transmission housing 5014. The honeycomb transmission structures 501 are connected by connecting rods 5015. The geometric characteristics of the hexagonal transmission housing maximize space utilization. (See [reference]) Figure 5 A stable mechanical support network is formed through the connecting rod 5015, which avoids abnormal flow resistance caused by structural deformation of the coolant flow channel. The equidistant spacing layout ensures that each honeycomb transmission structure 501 has a disturbance effect on the coolant. The independently connected AC power supply, together with the distributed control logic, can adjust the movement frequency and amplitude of the eccentric mass block, so that the coolant forms a disturbed flow field in the honeycomb flow channel.

[0061] Specifically, the silicone material of the honeycomb hexagonal transmission housing 5014 is designed with a sawtooth-shaped corrugation. Specifically, the honeycomb transmission structure 501 is a regular hexagon with an inscribed circle diameter of 30mm.

[0062] In a preferred embodiment, the hexagonal sidewalls of the honeycomb hexagonal transmission housing 5014 are made of nickel-titanium shape memory alloy;

[0063] Specifically, nickel-titanium shape memory alloy possesses superelasticity, shape memory effect, and good thermal response characteristics. By embedding nickel-titanium shape memory alloy, the honeycomb hexagonal transmission housing 5014 can dynamically adjust its structural shape according to the changes in coolant temperature. When the coolant temperature rises, the alloy is heated and triggers the shape memory effect, causing the housing to undergo small deformations locally, which increases the cross-sectional area of ​​the flow channel and accelerates the flow of coolant. When the temperature drops, the nickel-titanium shape memory alloy returns to its initial shape, and the flow channel contracts to maintain a reasonable flow rate.

[0064] See also Figure 6 In a preferred embodiment, the transmission structure includes a plurality of square transmission structures 502;

[0065] The square transmission structure 502 includes a second coil 5021, a second permanent magnet 5022, a second eccentric mass block 5023, and a square transmission housing 5024, which are fixed to the bottom of the battery housing 1, and each square transmission structure 502 is connected to an AC power source.

[0066] Specifically, the square transmission structure 502 has a thickness of 3mm and a length × width of 45mm × 160mm. By embedding the square transmission structure 502 and the honeycomb transmission structure 501 into the groove of the lithium-ion battery array 4, the geometric constraints of the groove can be used to guide the coolant to form an orderly honeycomb micro-circulation channel. The regular arrangement of the square transmission structure 502 provides a stable support frame for the channel, while the polygonal edges of the honeycomb transmission structure 501 enhance the turbulence intensity by cutting the main fluid, so that the coolant forms multi-angle contact when flowing through the lithium-ion battery array 4, significantly improving the heat exchange area.

[0067] In a preferred embodiment, the immersion battery cooling device further includes: a frequency modulation and voltage regulation module (not shown in the figure) and several temperature sensors (not shown in the figure); the frequency modulation and voltage regulation module is connected to the AC power supply, and the temperature sensors are connected to the frequency modulation and voltage regulation module;

[0068] The frequency and voltage regulation module is used to receive the real-time temperature collected by the temperature sensor and adjust the driving parameters of the AC power supply according to the real-time temperature.

[0069] Specifically, see Figure 4 The AC power supply is provided with a control signal interface (such as a terminal block, signal input plug-in, or other physical interface) for receiving external control signals, and the frequency modulation and voltage regulation module is provided with a signal output terminal (such as a terminal block or output plug-in of the corresponding specification). The two are physically connected through electrical connection components (including but not limited to wires, cables, aviation plugs, terminal blocks, or special connectors, etc., which are conventional connection components in the art).

[0070] Specifically, one end of the electrical connection component is fixedly connected to the signal output terminal of the frequency modulation and voltage regulation module (such as bolt fastening or plug-in connection), and the other end is matched to the control signal interface of the AC power supply, so that the control signal output by the frequency modulation and voltage regulation module can be transmitted to the AC power supply through this electrical connection path;

[0071] It should be noted that the above connection method is a conventional signal transmission structure between the control module and the power supply equipment in the field of power electronics. Its specific selection (such as conductor cross-sectional area and connector model) can be determined according to the actual power requirements and installation environment.

[0072] In a preferred embodiment, each of the transmission structures has at least one built-in temperature sensor; the lithium-ion battery array 4 is distributed with a plurality of temperature sensors, and each of the temperature sensors is attached to the surface of the lithium-ion batteries in the lithium-ion battery array 4.

[0073] The step of receiving the real-time temperature collected by the temperature sensor and adjusting the driving parameters of the AC power supply according to the real-time temperature includes:

[0074] The system receives real-time coolant temperature from a temperature sensor built into the transmission structure and real-time battery temperature from a temperature sensor attached to the surface of the lithium-ion battery, and adjusts the drive parameters of the AC power supply according to the real-time coolant temperature and the real-time battery temperature.

[0075] In a preferred embodiment, the driving parameters include output voltage and frequency;

[0076] Specifically, each of the transmission structures has at least one built-in temperature sensor, and the lithium-ion battery array 4 also has several temperature sensors distributed thereon. Each temperature sensor is attached to the surface of the lithium-ion battery in the lithium-ion battery array 4, thereby enabling real-time synchronous acquisition of dual data of coolant temperature and battery surface temperature. Therefore, by receiving the real-time coolant temperature collected by the temperature sensor built into the transmission structure and the real-time battery temperature collected by the temperature sensor attached to the surface of the lithium-ion battery, the driving parameters of the AC power supply are adjusted according to the real-time coolant temperature and the real-time battery temperature, wherein the driving parameters include output voltage and frequency.

[0077] To illustrate this better, a specific example is provided below:

[0078] When the real-time battery temperature and real-time coolant temperature meet the first preset range, a control signal with drive parameters of 2.5V and 125Hz is sent to maintain the basic flow rate of the coolant, ensure the stable operation of the battery in a low-temperature environment, and avoid energy loss caused by excessive cooling.

[0079] When the real-time battery temperature and real-time coolant temperature meet the second preset range, a control signal with drive parameters of 5V and 180Hz is sent to enhance coolant disturbance by increasing the vibration frequency.

[0080] When the real-time battery temperature and real-time coolant temperature meet the third preset range, a control signal with drive parameters of 10V and 250Hz is sent to force the coolant to circulate rapidly, quickly remove the heat accumulated on the battery surface, and ensure emergency heat dissipation response in case of temperature exceeding the limit.

[0081] It should be noted that the first, second, and third preset ranges can be set according to actual conditions (such as battery model and coolant type), and are not limited here.

[0082] Example 2

[0083] See Figure 7 This invention provides a method for adjusting the coolant flow rate of an immersion battery cooling device, applicable to the immersion battery cooling device described in Embodiment 1, comprising:

[0084] S1. Receive the real-time temperature of the target collected by the target temperature sensor;

[0085] S2. Determine the target driving parameters based on the target real-time temperature, and generate a control signal based on the target driving parameters;

[0086] In a preferred embodiment, the target real-time temperature includes the target real-time coolant temperature and the target real-time battery temperature;

[0087] The step of determining target driving parameters based on the target real-time temperature and generating control signals based on the target driving parameters includes:

[0088] Based on the target real-time coolant temperature and the target real-time battery temperature, target driving parameters are determined, and based on the target driving parameters, a control signal for controlling the AC power supply corresponding to the target temperature sensor is generated; wherein, the target driving parameters include target output voltage and target frequency;

[0089] Specifically, when the target real-time battery temperature and the target real-time coolant temperature meet the first preset range, a control signal with driving parameters of 2.5V and 125Hz is sent to maintain the basic flow rate of the coolant, ensure the stable operation of the battery in a low-temperature environment, and avoid energy loss caused by excessive cooling.

[0090] When the target real-time battery temperature and the target real-time coolant temperature meet the second preset range, a control signal with drive parameters of 5V and 180Hz is sent to enhance coolant disturbance by increasing the vibration frequency.

[0091] When the target real-time battery temperature and the target real-time coolant temperature meet the third preset range, a control signal with drive parameters of 10V and 250Hz is sent to force the coolant to circulate rapidly, quickly remove the heat accumulated on the battery surface, and ensure emergency heat dissipation response in case of temperature exceeding the limit.

[0092] It should be noted that the first, second, and third preset ranges can be set according to actual conditions (such as battery model and coolant type), and are not limited here.

[0093] S3. Send the control signal to the AC power supply corresponding to the target temperature sensor so that the AC power supply outputs power according to the target output voltage and the target frequency, so as to drive the permanent magnet in the transmission structure to drive the eccentric mass block in the transmission structure to move, thereby changing the flow rate of the coolant flowing through the transmission structure.

[0094] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. An immersion battery cooling device, characterized in that, include: Battery casing, liquid inlet, liquid outlet, lithium-ion battery array, and transmission array; The transmission array includes several transmission structures, each of which consists of a coil, a permanent magnet, an eccentric mass block and a transmission housing, and each of the transmission structures is connected to an AC power supply. The lithium-ion battery array is fixed to the inner side of the bottom surface of the battery casing, and the transmission array is embedded in the groove of the lithium-ion battery array; The transmission structure is used to receive alternating current output from an AC power source, so as to generate a periodically changing magnetic field in the internal coil, thereby driving the internal permanent magnet to move the eccentric mass block, thus changing the flow rate of the coolant flowing through the transmission structure; wherein the coolant flows in from the inlet and flows out from the outlet.

2. The immersion battery cooling device as described in claim 1, characterized in that, The liquid inlet is located on the first side of the battery casing, at the bottom of the first side; the liquid outlet is located on the second side of the battery casing, at the top of the second side; the first side and the second side are parallel to each other.

3. The immersion battery cooling device as described in claim 1, characterized in that, The transmission structure includes several honeycomb-shaped transmission structures; each of the honeycomb-shaped transmission structures is connected by a connecting rod. The honeycomb transmission structure includes a first coil, a first permanent magnet, a first eccentric mass block, and a honeycomb-shaped regular hexagonal transmission housing. Each honeycomb transmission structure is fixed to the bottom of the battery casing, and each honeycomb transmission structure is connected to an AC power source.

4. The immersion battery cooling device as described in claim 3, characterized in that, The transmission structure includes several square transmission structures; The square transmission structure includes a second coil, a second permanent magnet, a second eccentric mass block, and a square transmission housing, which are fixed to the bottom of the battery housing, and each square transmission structure is connected to an AC power source.

5. The immersion battery cooling device as described in claim 3, characterized in that, The hexagonal walls of the honeycomb-shaped hexagonal transmission housing are made of nickel-titanium shape memory alloy.

6. The immersion battery cooling device as described in claim 4, characterized in that, Also includes: The system includes a frequency modulation and voltage regulation module and several temperature sensors; the frequency modulation and voltage regulation module is connected to the AC power supply, and the temperature sensors are connected to the frequency modulation and voltage regulation module. The frequency and voltage regulation module is used to receive the real-time temperature collected by the temperature sensor and adjust the driving parameters of the AC power supply according to the real-time temperature.

7. The immersion battery cooling device as described in claim 6, characterized in that, Each of the transmission structures has at least one built-in temperature sensor; the lithium-ion battery array is distributed with several temperature sensors, and each temperature sensor is attached to the surface of the lithium-ion battery in the lithium-ion battery array. The step of receiving the real-time temperature collected by the temperature sensor and adjusting the driving parameters of the AC power supply according to the real-time temperature includes: The system receives real-time coolant temperature data from a temperature sensor built into the transmission structure and real-time battery temperature data from a temperature sensor attached to the surface of the lithium-ion battery, and adjusts the drive parameters of the AC power supply based on the real-time coolant temperature and the real-time battery temperature.

8. The immersion battery cooling device as described in claim 7, characterized in that, The driving parameters include output voltage and frequency.

9. A method for regulating the flow rate of coolant based on an immersion battery cooling device, characterized in that, An immersion battery cooling device as described in any one of claims 1-8, comprising: Receive the real-time temperature of the target as collected by the target temperature sensor; Based on the target real-time temperature, determine the target driving parameters, and generate a control signal based on the target driving parameters; The control signal is sent to the AC power supply corresponding to the target temperature sensor, so that the AC power supply outputs power according to the target output voltage and the target frequency, thereby driving the permanent magnet in the transmission structure to move the eccentric mass block in the transmission structure, so that the flow rate of the coolant flowing through the transmission structure changes.

10. The method for adjusting the coolant flow rate based on an immersion battery cooling device as described in claim 9, characterized in that, The target real-time temperature includes the target real-time coolant temperature and the target real-time battery temperature; The step of determining target driving parameters based on the target real-time temperature and generating control signals based on the target driving parameters includes: Based on the target real-time coolant temperature and the target real-time battery temperature, target driving parameters are determined, and based on the target driving parameters, a control signal for controlling the AC power supply corresponding to the target temperature sensor is generated; wherein, the target driving parameters include target output voltage and target frequency.

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