Cooling plate temperature control method, computer readable storage medium, and vehicle

Abstract

This invention discloses a cooling plate temperature control method, a computer-readable storage medium, and a vehicle, relating to the field of battery cooling technology. The cooling plate temperature control method includes: determining a temperature difference between a first temperature value and a second temperature value; determining a distribution ratio between a first water outlet and a second water outlet based on the temperature difference; adjusting the total flow rate of the water inlet and the flow rate ratio of the cooling medium flowing into the first cooling section through the first water outlet and into the second cooling section through the second water outlet, and ensuring that the cooling intensity of the first cooling section and the cooling intensity of the second cooling section are proportional to the corresponding heat source intensity; and opening the proportional valve according to the distribution ratio. The cooling plate temperature control method provided by this invention effectively reduces the temperature gradient between different areas of the battery, achieving more balanced and efficient temperature control.

Description

Technical Field

[0001] This invention relates to the field of battery cooling technology, and in particular to a cooling plate temperature control method, a computer-readable storage medium, and a vehicle. Background Technology

[0002] In the thermal management system of power batteries, effectively cooling the battery module to ensure its performance and lifespan is a common technical requirement. A battery module typically consists of an array of multiple cells, and the heat generated during operation is spatially non-uniformly distributed. For example, cells in the central region are prone to forming localized hot spots due to poor heat dissipation, while cells at the edges have relatively lower temperatures. Therefore, the thermal management system needs to be able to handle this non-uniform heat source distribution to maintain the overall temperature uniformity of the battery module.

[0003] In related technologies, liquid cooling plates for battery modules often employ a uniform flow channel design, such as evenly distributed parallel DC channels or serpentine flow channels throughout the plate area. However, due to the non-uniformity of heat generation within the battery module itself, a uniform cooling method cannot match the actual heat dissipation requirements of different areas of the power supply. This results in persistently high temperatures in the central area of ​​the battery, while the peripheral areas may be over-cooled, thus failing to effectively reduce internal temperature differences within the battery. This temperature non-uniformity accelerates inconsistent battery degradation, affecting overall usable capacity and cycle life, and may even lead to safety risks under extreme operating conditions. Summary of the Invention

[0004] The main objective of this invention is to propose a cooling plate temperature control method, which aims to solve the technical problem that the uniform cooling method in the prior art cannot match the actual heat dissipation requirements of different areas on the power supply, resulting in the inability to effectively reduce the temperature difference inside the battery.

[0005] To achieve the above objectives, this invention proposes a cooling plate temperature control method applied to a cooling plate. The cooling plate includes a first cooling section, a second cooling section, and a proportional valve. The proportional valve has a water inlet, a first water outlet connected to the first cooling section, and a second water outlet connected to the second cooling section. The cooling plate temperature control method includes: Based on a first temperature value and a second temperature value, a temperature difference between the first temperature value and the second temperature value is determined; wherein, the first temperature value is determined by measuring the temperature of the first cooling unit, the second temperature value is determined by measuring the temperature of the second cooling unit, and the temperature difference is the absolute value of the temperature difference between the first temperature value and the second temperature value. The distribution ratio between the first water outlet and the second water outlet is determined based on the temperature difference value; wherein, the total flow rate of the water inlet is adjusted by the distribution ratio, and the flow ratio of the cooling medium flowing into the first cooling section through the first water outlet and into the second cooling section through the second water outlet is adjusted, and the cooling intensity of the first cooling section and the cooling intensity of the second cooling section are proportional to the corresponding heat source intensity. The proportional valve is opened according to the specified distribution ratio.

[0006] In one embodiment, the step of determining the distribution ratio between the first outlet and the second outlet based on the temperature difference value includes: Multiple temperature difference nodes are determined based on a preset temperature difference, arranged from smallest to largest. The adjustment mode is determined based on the temperature difference value and the temperature difference node. Based on the adjustment mode, the allocation ratio is determined according to the temperature difference value.

[0007] In one embodiment, the step of determining the allocation ratio based on the temperature difference value according to the adjustment mode includes: When the adjustment mode is the first mode, the allocation ratio is adjusted to the preset allocation ratio; When the adjustment mode is the second mode, the allocation ratio is determined based on the preset temperature difference and the temperature difference value; When the adjustment mode is the third mode, the total flow rate is determined based on the preset temperature and the temperature difference value, the first temperature value, and the second temperature value. When the adjustment mode is the fourth mode, the total flow rate is adjusted to the rated flow rate, and the allocation ratio is adjusted to the preset allocation ratio.

[0008] In one embodiment, the step of determining the distribution ratio based on the preset temperature difference and the temperature difference value includes: The growth coefficient is determined based on the ratio of the temperature difference to the preset temperature difference; The allocation ratio is determined based on the growth coefficient.

[0009] In one embodiment, the step of determining the total flow rate based on a preset temperature, according to the temperature difference value, the first temperature value, and the second temperature value, includes: The temperature exceedance is determined based on the first temperature value, the second temperature value, and the preset temperature; The temperature difference exceeding the limit is determined based on the preset temperature difference and the temperature difference value; The flow coefficient is determined based on the preset weights, according to the temperature exceeding the limit and the temperature difference exceeding the limit; The total flow rate is determined based on the initial flow rate and the flow rate coefficient.

[0010] In one embodiment, after determining the adjustment mode based on the temperature difference value and the temperature difference node, the method further includes: Compare the first temperature value with the second temperature value, and determine the maximum value based on the comparison result; Based on the first warning temperature and the second warning temperature, the maximum value is compared with the first warning temperature and the second warning temperature one by one, wherein the second warning temperature is greater than the first warning temperature; If the maximum value is greater than the first warning temperature, the adjustment mode will be switched to the third mode; If the maximum value is greater than the second warning temperature, the adjustment mode will be switched to the fourth mode.

[0011] In one embodiment, the step of opening the proportional valve according to the distribution ratio includes: The target displacement of the valve core of the proportional valve is determined according to the allocation ratio. Obtain the current displacement of the valve core, adjust the current displacement to the target displacement, and update the PWM duty cycle.

[0012] In one embodiment, the step of obtaining the current displacement of the valve core and adjusting the current displacement to the target displacement includes: Based on the target displacement, the displacement error is determined according to the current displacement of the valve core; If the displacement error is greater than a preset error and the duration of the displacement error is greater than a preset duration, historical data of the most recent preset number of times is obtained. Based on the historical data, the corresponding deviation characteristics are determined; The proportional coefficient and integral coefficient are determined based on the aforementioned deviation characteristics; The current displacement is compensated based on the proportional coefficient and the integral coefficient.

[0013] In addition, to solve the above problems, the present invention also proposes a computer-readable storage medium storing an intelligent vibration damping program, which, when executed by a processor, implements the steps of the cooling plate temperature control method described above.

[0014] Furthermore, to address the aforementioned problems, the present invention also proposes a vehicle comprising: The controller includes a processor and a memory, the memory storing a computer program, and when the processor executes the computer program, it performs the aforementioned cooling plate temperature control method.

[0015] The cooling plate temperature control method provided by this invention sets up a first cooling section and a second cooling section on the cooling plate for different locations on the battery. Based on the temperature difference between the first and second temperature values ​​of the different cooling sections, the distribution ratio of the cooling medium flow rate into the first and second cooling sections, as well as the total flow rate at the inlet, are dynamically adjusted. This allows for proactive differentiation of the cooling capacity of the different cooling sections to match the heat source intensity of corresponding areas on the battery. This effectively reduces the temperature gradient between different areas of the battery, achieving more balanced and efficient temperature control. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of one side of the cooling plate provided by the present invention.

[0018] Figure 2 This is a schematic diagram of the structure of the other side of the cooling plate provided by the present invention.

[0019] Figure 3 This is a schematic flowchart of an embodiment of the cooling plate temperature control method provided by the present invention.

[0020] Figure 4 This is a schematic flowchart of another embodiment of the cooling plate temperature control method provided by the present invention.

[0021] Figure 5 This is a schematic flowchart of another embodiment of the cooling plate temperature control method provided by the present invention.

[0022] Figure 6 This is a schematic flowchart of another embodiment of the cooling plate temperature control method provided by the present invention.

[0023] Figure 7 This is a schematic flowchart of another embodiment of the cooling plate temperature control method provided by the present invention.

[0024] Figure 8 This is a schematic flowchart of another embodiment of the cooling plate temperature control method provided by the present invention.

[0025] Figure 9 This is a schematic flowchart of another embodiment of the cooling plate temperature control method provided by the present invention.

[0026] Figure 10This is a schematic flowchart of another embodiment of the cooling plate temperature control method provided by the present invention.

[0027] Figure 11 A structural block diagram of a vehicle provided by the present invention.

[0028] Attached icon number 10. Cooling plate; 11. First cooling section; 12. Second cooling section; 21. First temperature sensor; 22. Second temperature sensor; 30. Proportional valve; 31. First water outlet; 32. Second water outlet; 33. Water inlet; 100. Vehicle; 101. Processor; 102. Memory; 103. Input device; 104. Output device.

[0029] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0031] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0032] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0033] This invention proposes a cooling plate temperature control method for a vehicle, which can be a combined operation machine used in fields such as agriculture and forestry. Specifically, the vehicle includes a vehicle that provides driving power, such as a tractor; and also includes a load end for agricultural and forestry operations, such as a cargo box, a seed collection end, or a harvesting end.

[0034] The cooling plate temperature control method is applied to cooling plate 10. Please refer to [link / reference]. Figure 1 and Figure 2 The cooling plate 10 includes a first cooling section 11, a second cooling section 12, and a proportional valve 30. The proportional valve 30 has a water inlet 33, a first water outlet 31 connected to the first cooling section 11, and a second water outlet 32 ​​connected to the second cooling section 12.

[0035] A cooling plate 10 is disposed on one side of the battery, and its internal space is divided into at least two cooling sections, namely a first cooling section 11 and a second cooling section 12. The first cooling section 11 corresponds to the area of ​​the battery with high heat source intensity, and the second cooling section 12 corresponds to the area of ​​the battery with low heat source intensity. Both the first cooling section 11 and the second cooling section 12 are provided with flow channels for the flow of cooling medium.

[0036] In a preferred embodiment, there are two second cooling sections 12, located on the upper and lower sides of the first cooling section 11 respectively. The flow channel density of the first cooling section 11 is greater than that of the second cooling section 12. That is, the flow channels of the first cooling section 11 are arranged more densely, so the flow path and flow time of the cooling medium in the first cooling section 11 are longer, resulting in a better cooling effect on the battery cell located in the central region of the battery.

[0037] A first temperature sensor 21 and a second temperature sensor 22 are respectively installed at the first cooling section 11 and the second cooling section 12. The first temperature sensor 21 is installed in the first cooling section 11 and is used to collect a first temperature value characterizing the temperature of the cooling medium in the first cooling section 11. The second temperature sensor 22 is installed in the second cooling section 12 and is used to collect a second temperature value characterizing the temperature of the cooling medium in the second cooling section 12.

[0038] Please see Figure 3 The proportional valve 30 includes an inlet 33 and two outlets, wherein the first outlet 31 is connected to the inlet a of the first cooling section 11, and the second outlet 32 ​​is connected to the inlet b of the second cooling section 12. The cooling medium enters through the inlet 33 of the proportional valve 30, part of the cooling medium flows into the flow channel of the first cooling section 11 through the first outlet 31, and the other part of the cooling medium flows into the flow channel of the second cooling section 12 through the second outlet 32.

[0039] Please see Figure 1In the upper first cooling section 11, the cooling medium, after passing through the flow channel, merges with the cooling medium passing through the flow channel of the second cooling section 12 and finally flows out through the drain outlet c; in the lower first cooling section 11, the cooling medium, after passing through the flow channel, flows out through the drain outlet d. This method ensures that the cooling medium enters both the first cooling section 11 and the second cooling section 12 together, and after cooling the battery, it discharges from diagonally opposite outlets. This extends the flow path and ensures that the cooling medium is fully utilized throughout the entire cooling plate 10.

[0040] The proportional valve 30 is communicatively connected to the controller and can receive control commands issued by the controller. By changing the displacement of its internal valve core, the proportional valve 30 can adjust the distribution ratio. Specifically, the distribution ratio includes the ratio of the flow rate of the cooling medium flowing into the first cooling section 11 and the second cooling section 12, as well as the total flow rate of the cooling medium flowing into the inlet 33.

[0041] The controller is the core of the control system, and it is communicatively connected to the first temperature sensor 21, the second temperature sensor 22, and the proportional valve 30. The controller acquires the first and second temperature values, executes preset control logic, generates and outputs instructions to drive the proportional valve 30, thereby adjusting the cooling capacity of different areas on the battery.

[0042] Further, please refer to Figure 4 , Figure 4 This is a schematic flowchart of the first embodiment of the cooling plate temperature control method of the present invention. The cooling plate temperature control method includes the following steps: Step S10: Based on the first temperature value and the second temperature value, determine the temperature difference between the first temperature value and the second temperature value.

[0043] The first temperature value is determined by measuring the temperature of the first cooling unit 11, and the second temperature value is determined by measuring the temperature of the second cooling unit 12. The temperature difference value is the absolute value of the temperature difference between the first temperature value and the second temperature value.

[0044] The acquisition of the first temperature value T1 and the second temperature value T2 can be a continuous, real-time data acquisition process. For example, with a fixed sampling period, which can be set to acquire data once every 10 milliseconds, every 100 milliseconds, or every 1 second, the temperature sensor reads the analog or digital signal and converts it into the corresponding temperature value. Using a periodic acquisition method ensures that the control logic obtains temperature data with sufficient time-domain resolution, thereby enabling timely tracking of temperature changes.

[0045] Here, the first temperature value and the second temperature value refer to any measurement value that can directly or indirectly characterize the thermal state of the cooling medium in the first cooling section 11 and the second cooling section 12. Specifically, it can directly refer to the measurement readings of the first temperature sensor 21 and the second temperature sensor 22, or it can cover the values ​​obtained after converting, compensating or filtering these readings.

[0046] After obtaining the first temperature value T1 and the second temperature value T2, the temperature difference ΔT between them is first calculated. The temperature difference ΔT represents the absolute value of the temperature difference between the first and second temperature values. The temperature difference ΔT satisfies the following relationship: ΔT = |T1 - T2|.

[0047] Step S20: Determine the distribution ratio of the first water outlet and the second water outlet based on the temperature difference value.

[0048] Subsequently, based on the temperature difference, a control command is output to the proportional valve 30 to change the distribution ratio of its valve core, thereby dynamically adjusting the total flow rate of the cooling medium flowing into the proportional valve 30, as well as the proportion of the cooling medium flow rate flowing into the first cooling section 11 and the second cooling section 12 through the proportional valve 30 in the total flow rate.

[0049] The total flow rate of the inlet 33 is adjusted by the distribution ratio, and the flow rate ratio of the cooling medium flowing into the first cooling section 11 through the first outlet 31 and into the second cooling section 12 through the second outlet 32 ​​is adjusted to make the cooling intensity of the first cooling section 11 and the cooling intensity of the second cooling section 12 proportional to the corresponding heat source intensity.

[0050] Due to the high temperature in the central region of the battery, the temperature of the second cooling section 12 is usually higher than that of the first cooling section 11. Therefore, when the temperature difference increases, it indicates that the heat load difference between the second cooling section 12 and the first cooling section 11 is increasing. The controller then increases the flow rate allocated to the second cooling section 12 and correspondingly decreases the flow rate allocated to the first cooling section 11 to enhance the cooling capacity of the central region of the battery and achieve differentiated cooling of the non-uniform heat source.

[0051] Step S30: Open the proportional valve according to the distribution ratio.

[0052] In this embodiment, the proportional valve 30 is a three-way proportional valve 30, which has a movable valve core inside. The displacement of the valve core can simultaneously and complementaryly change the flow cross-sectional area from the first outlet 31 and the second outlet 32. Specifically, when the valve core is driven to move in one direction, the flow rate of one of the first outlet 31 and the second outlet 32 ​​increases, while the flow rate of the other decreases. For example, assuming the flow rate of the first outlet 31 is Q1 and the flow rate of the second outlet 32 ​​is Q2, when the second temperature value T2 is higher than the first temperature value T1, the valve core displacement is controlled to increase the opening of the second outlet 32, thereby increasing the flow rate Q2 flowing into the second cooling section 12 and decreasing the flow rate Q1 flowing into the first cooling section 11.

[0053] It is understood that this embodiment includes, but is not limited to, the use of a three-way proportional valve 30 for control. Alternatively, two independent controllable water pumps can be used to drive the cooling medium circuits flowing to the first cooling section 11 and the second cooling section 12 respectively. By adjusting the speed of the two water pumps, the flow rate of each circuit can be controlled, achieving the same effect of differentiated flow distribution. Alternatively, two independent proportional valves 30 can be used to control the opening of the two flow channels respectively. Although these solutions differ in hardware structure, they all achieve precise control of the cooling medium flow rate to different areas, thereby establishing differentiated cooling capabilities.

[0054] After determining the distribution ratio, i.e., determining the flow rates corresponding to inlet 33 and outlet 33, the flow rates are converted into the target displacement of proportional valve 30. This, in turn, generates the current value to drive proportional valve 30, causing the valve core to move according to the target displacement. During the movement, the current displacement of the valve core can be detected in real time, and compared with the target displacement to calculate the displacement error. Based on this displacement error, an adjustment signal is generated through PID control, which is ultimately converted into the current value used to drive the valve core. For example, if the current displacement is less than the target displacement, the driving current is increased to overcome friction or other resistance, pushing the valve core to the target displacement.

[0055] In this embodiment, a proportional-integral-derivative algorithm can be used, with the temperature difference or its deviation from the target temperature difference as input, and the increment of the distribution ratio or valve core displacement as output. For example, by controlling the displacement of the valve core of the three-way proportional valve 30, continuous and precise flow distribution can be achieved. The goal of the adjustment is to make the distribution of cooling capacity proportional to the distribution of heat source intensity, that is, the area with higher heat source intensity receives a larger flow of cooling medium, thereby ensuring stronger heat dissipation capacity in that area. This dynamic matching realizes an active and differentiated heat dissipation method.

[0056] Cooling capacity refers to the ability of a cooling unit to remove heat from the battery per unit time. It is directly related to factors such as the flow rate and velocity of the cooling medium. Therefore, adjusting the distribution ratio of the cooling medium flow rate into the first cooling unit 11 and the second cooling unit 12 essentially changes the convective heat transfer intensity of these two cooling units, thereby adjusting their cooling capacity.

[0057] This embodiment forms a complete closed-loop control circuit from temperature acquisition and temperature difference calculation to flow distribution and adjustment. This enables the cooling capacity of the first cooling unit 11 and the second cooling unit 12 to respond dynamically and in real time to changes in heat source intensity, thereby jointly solving the technical problem of excessive temperature gradients inside the cooled object caused by non-uniform heat source distribution.

[0058] Further, please refer to Figure 5 , Figure 5 This is a schematic flowchart of the second embodiment of the cooling plate temperature control method of the present invention. Step S20 includes: Step S21: Determine multiple temperature difference nodes arranged from small to large based on the preset temperature difference.

[0059] In this embodiment, the preset temperature difference is assumed to be y. Multiple temperature difference nodes are set according to the preset temperature difference, thereby dividing the temperature into multiple temperature difference intervals. The preset temperature difference is a calibration value, which can be determined based on the stability characteristics of the cooling plate 10 at each temperature difference node. For example, in this embodiment, three temperature difference nodes are set, namely y / 2, y, and 2y, dividing the temperature into four intervals: (-∞, y / 2), [y / 2, y), [y, 2y), and [2y, +∞).

[0060] Specifically, the conventional flow distribution regulation based on temperature difference is refined into a multi-mode switching control strategy based on temperature difference range. First, the temperature difference value ΔT is calculated and determined based on the first temperature value and the second temperature value. Then, ΔT is compared with multiple preset temperature difference nodes to determine the temperature difference range in which ΔT is located.

[0061] Step S22: Determine the adjustment mode based on the temperature difference value and the temperature difference node.

[0062] Based on the different temperature ranges, a set of preset control modes is invoked and executed. In this embodiment, the temperature range (-∞, y / 2) corresponds to the first mode, the temperature range [y / 2, y) corresponds to the second mode, the temperature range [y, 2y) corresponds to the third mode, and the temperature range [2y, +∞) corresponds to the fourth mode.

[0063] As one specific implementation method, the first mode is the equalization mode, the second mode is the temperature difference priority mode, the third mode is the over-temperature protection mode, and the fourth mode is the forced equalization mode. Each preset control mode predefines different control objectives or PID parameter sets, such as different proportional gains, integral time constants, or derivative time constants.

[0064] In this embodiment, when the temperature difference value is less than the temperature difference node y / 2, it indicates a small temperature difference, and the system can enter the balancing mode for fine-tuning and to avoid overshoot. When the temperature difference value is greater than the temperature difference node y / 2 but less than the temperature difference node y, it indicates a large temperature difference but not exceeding the limit, and the system can enter the temperature difference priority mode to achieve rapid response and compensate for the temperature difference. When the temperature difference value is greater than the temperature difference node y but less than the temperature difference node 2y, it indicates that the temperature difference value is close to the limit, and the system can enter the over-temperature protection mode to curb the highest temperature. When the temperature difference value is greater than the temperature difference node 2y, it indicates that the temperature difference value is too large, indicating that the temperature difference has "suddenly" or "rapidly increased" to a potentially uncontrollable condition, and the system can enter the forced balancing mode to achieve rapid cooling. By switching modes for different temperature difference ranges, the system can adopt the most suitable control strategy under different operating conditions, achieving performance optimization across the entire operating range.

[0065] Step S23: Based on the adjustment mode, determine the allocation ratio according to the temperature difference value.

[0066] By employing a multi-mode switching approach based on temperature difference ranges, the control strategy can be flexibly adjusted. While ensuring safety, it pursues optimal control accuracy and energy efficiency, solving the problem of single control modes failing to address all aspects over a wide temperature range. It achieves a multi-stage progression from stable maintenance to active balancing and then to priority cooling, taking into account the system's comfort, energy efficiency, control accuracy, and safety.

[0067] Further, please refer to Figure 6 , Figure 6 This is a flowchart illustrating the third embodiment of the cooling plate temperature control method of the present invention. Step S23 includes: Step S231: When the adjustment mode is the first mode, adjust the allocation ratio to the preset allocation ratio.

[0068] Based on the above, in this embodiment, when the first mode is the balanced mode, the distribution ratio is set according to the preset distribution ratio. The preset distribution ratio can be set to 1:1, that is, the flow rates of the first outlet 31 and the second outlet 32 ​​are the same.

[0069] When the temperature difference value ΔT < y / 2, it indicates that the temperatures of the first cooling part 11 and the second cooling part 12 are basically the same, that is, the temperatures of each area on the battery are basically the same. Therefore, set according to the preset distribution ratio. Specifically, the preset distribution ratio includes locking the flow rate ratio of the first water outlet 31 and the second water outlet 32 to 1:1, and setting the total flow rate of the water inlet 33 to the preset basic flow rate, so that the first cooling part 11 and the second cooling part 12 can maintain the current state, reduce the actuator action and energy consumption, and achieve stability.

[0070] Step S232: In the case where the adjustment mode is the second mode, determine the distribution ratio according to the preset temperature difference and the temperature difference value.

[0071] According to the above content, in the case where the second mode in this embodiment is the temperature difference priority mode, when the temperature difference value satisfies: y / 2 ≤ ΔT < y, it indicates that there is a significant temperature difference between the first cooling part 11 and the second cooling part 12, but it is still within the controllable range. Therefore, it is only necessary to actively adjust the flow rate ratio of the first water outlet 31 and the second water outlet 32. For example, direct more flow to the cooler with a higher temperature to actively reduce the temperature difference. Thus, rapid response can be achieved, and the temperature difference can be reduced before it expands to an unacceptable range.

[0072] Step S233: In the case where the adjustment mode is the third mode, based on the preset temperature, determine the total flow rate according to the temperature difference value, the first temperature value, and the second temperature value.

[0073] According to the above content, in the case where the third mode in this embodiment is the over-temperature protection mode, when the temperature difference value satisfies: 2 ≤ ΔT < 2y, it indicates that the temperature difference between the first cooling part 11 and the second cooling part 12 has further expanded. Although it still belongs to the category of conventional control, the primary task in the over-temperature protection mode is no longer to pursue balance, but to change to "limiting the highest point temperature". Therefore, a more aggressive strategy will be adopted in the over-temperature protection mode. First, adjust the total flow rate through the temperature difference value, the first temperature, and the second temperature, so as to increase the total flow rate of the cooling medium flowing into the first cooling part 11 and the second cooling part 12, and then allocate most or even all of the available flow rate to the area with a higher temperature to concentrate efforts on cooling the high-temperature area and prevent it from further rising and triggering emergency protection.

[0074] Step S234: In the case where the adjustment mode is the fourth mode, adjust the total flow rate to the rated flow rate and adjust the distribution ratio to the preset distribution ratio.

[0075] According to the above, in the case where the fourth mode in this embodiment is the forced equalization mode, when the temperature difference value satisfies ΔT≥2y, it indicates that the temperature difference between the first cooling part 11 and the second cooling part 12 is too large, and it is determined that an abnormal temperature difference mutation has occurred, which means that instantaneous thermal failure or local heat source step occurs in a certain area of the battery. Due to the limitations of its adjustment speed and convergence logic, the conventional control mode based on proportional adjustment may not be able to quickly and effectively suppress this divergent trend, and may even cause system oscillation due to over-adjustment. Therefore, in the forced equalization mode, first adjust the total flow rate to the rated flow rate, that is, set the opening degree on the water inlet 33 side of the proportional valve 30 to 100%. For example, drive the electromagnet of the proportional valve 30 with the maximum allowable current to make the valve core reach the position at the fastest speed, and minimize the duration of the unstable state, so as to ensure the highest cooling efficiency. At the same time, forcibly lock the ratio of the first water outlet 31 to the second water outlet 32 to be 1:1. This means that regardless of the magnitudes of the first temperature value T1 and the second temperature value T2 at this time, the temperature difference value will be ignored and an equal flow rate distribution will be adopted. Thus, a deterministic intervention method is provided.

[0076] It can be understood that the reason for the sharp increase in the temperature difference between the first cooling part 11 and the second cooling part 12 may be due to overcompensation, that is, too much flow is tilted towards the high-temperature area, resulting in overcooling, or too much flow is cut on the low-temperature side, resulting in insufficient cooling, forming a vicious cycle. By forcibly locking it into a 1:1 equalization state, reset is achieved. At the same time, the flow rate of the water inlet 33 is adjusted to the rated flow rate, ensuring the maximum cooling efficiency and interrupting the dynamic process that may lead to oscillation or divergence. A stable and neutral cooling platform is provided to wait for the temperature difference to gradually and naturally drop or wait for further diagnosis, so as to avoid exacerbating system oscillation.

[0077] After entering the forced equalization mode, the flow rate ratio of the first water outlet 31 and the second water outlet 32 will continue to be locked at 1:1, and the real-time change of the temperature difference value ΔT will be continuously monitored. Only when ΔT continuously drops and finally drops below a preset safety window value that is much lower than the temperature difference node 2y, for example, when ΔT < y / 2, it is considered that the abnormal situation has been lifted, and the forced equalization mode is exited, and the control right is returned to the conventional mode selection logic.

[0078] In this embodiment, by introducing hysteresis control, it is ensured that the exit of the forced equalization mode is reliable. Setting a lower safety window value ΔT < y / 2 as the exit condition can effectively prevent the system from frequently triggering and exiting the forced equalization mode near the temperature difference node 2y, and prevent the system from oscillating. It ensures that the forced equalization mode can be quickly established and reliably maintained until the temperature difference value truly returns to equilibrium. It solves the problem of how to smoothly and reliably return to the normal control mode after emergency intervention, and further enhances the stability and safety when dealing with temperature difference mutations.

[0079] Further, please refer to Figure 7 , Figure 7 This is a schematic flowchart of the fourth embodiment of the cooling plate temperature control method of the present invention. After step S22, it further includes: Step S24: Compare the first temperature value with the second temperature value, and determine the maximum value based on the comparison result.

[0080] Step S25: Based on the first warning temperature and the second warning temperature, compare the maximum value with the first warning temperature and the second warning temperature one by one, wherein the second warning temperature is greater than the first warning temperature.

[0081] Step S26: If the maximum value is greater than the first warning temperature, switch the adjustment mode to the third mode.

[0082] In this embodiment, before determining whether to enter a certain control mode, it is necessary to identify the magnitudes of the first temperature value T1 and the second temperature value T2. Specifically, they are first compared with a preset temperature threshold, that is, compared with the first warning temperature. The first warning temperature is a hard indicator based on the temperature value. Assuming the first warning temperature is x, where x represents a certain reference temperature or the upper limit of the system's safe operating temperature. As long as either T1>x or T2>x is met, regardless of the current temperature difference ΔT, the system will immediately bypass the mode selection and flow calculation logic based on the temperature difference and directly force entry into the third mode, that is, the over-temperature protection mode. That is, in this embodiment, a priority method is set to judge the magnitudes of the first and second temperature values, because the temperature value is the most direct and reliable indicator for judging whether the battery is on the verge of dangerous thermal runaway. When the temperature of the cooling medium in any cooling section of the cooling plate 10 exceeds the warning temperature, it indicates that the local heat source in that area has generated too much heat, the cooling capacity is completely insufficient, and there is a risk of thermal runaway. At this time, the primary task is to dissipate heat to the maximum extent and unconditionally, rather than precisely balancing the temperature difference between areas. This provides a simple, reliable, and millisecond-level security protection layer.

[0083] Step S27: If the maximum value is greater than the second warning temperature, switch the adjustment mode to the fourth mode.

[0084] Similarly, based on the first warning temperature, a larger temperature threshold is preset as the second warning temperature, for example, the second warning temperature is set to x+10℃. Forced balancing mode is entered as long as either T1>x+10℃ or T2>x+10℃ is met. The valve core of the proportional valve 30 moves to a position that allows the inlet 33 to open to 100%, maximizing the effective flow cross-sectional area of ​​the first outlet 31 and the second outlet 32. This naturally distributes the total cooling medium flow rate according to the flow channel's own resistance characteristics, essentially dedicating all heat dissipation capacity to cooling the two areas.

[0085] This ensures that, in the event of a dangerous temperature and spatial condition, by removing all flow restrictions, the flow rate and velocity of the cooling medium flowing through all cooling sections instantly reach their peak, carrying heat away from the battery at the fastest speed. This allows the battery to quickly escape from a dangerously high temperature state.

[0086] Further, step S232 includes the following steps: Step S2321: Determine the growth coefficient based on the ratio of the temperature difference to the preset temperature difference.

[0087] Step S2322: Determine the allocation ratio based on the growth coefficient.

[0088] In the temperature difference priority mode, a dynamically adjusted growth coefficient α is introduced. This growth coefficient α is used to determine the degree of bias in the flow rate ratio. For example, the flow rate ratio towards the cooling section with higher temperature can be defined in relation to this growth coefficient α; in this embodiment, the second cooling section 12 is associated with the growth coefficient α. Therefore, the flow rate Q1 of the first outlet 31 = Q total (0.5-α), the flow rate at the second outlet 32 ​​is Q2 = Q total (0.5+α). Where Q total This is the total flow rate at inlet 33.

[0089] Specifically, the allocation coefficient α is adjusted based on the ratio of the temperature difference ΔT to the preset temperature difference y. For every increase of y / 10 in ΔT, the adjustment step size of α increases by 0.05. This means that the change in the growth coefficient α has a fixed incremental step size relationship with the ratio of the temperature difference ΔT to the preset temperature difference y.

[0090] For example, when ΔT starts from the temperature difference node y / 2, for every increment of y / 10, α is adjusted by a step size of 0.05 based on the current value. This incremental adjustment mechanism quantifies the magnitude of the temperature difference into the step size of the control output, enabling the flow distribution to have a clear and controllable gain response to changes in the temperature difference. It achieves a proportional-incremental response to the temperature difference value, avoiding over-adjustment when the temperature difference is small in the temperature difference priority mode, while ensuring sufficient intervention strength under large temperature differences.

[0091] It should be noted that the specific values ​​of the percentage increase and step size increase of ΔT are not limited to the methods described above. They can be adjusted according to the actual heat source intensity and response characteristics of the battery. For example, it can also be set that for every y / 5 increase in ΔT, the adjustment step size of α increases by 0.1.

[0092] Further, step S233 includes the following steps: Step S2331: Determine the temperature exceedance based on the first temperature value, the second temperature value, and the preset temperature.

[0093] Step S2332: Determine the temperature difference exceeding the limit based on the preset temperature difference and the temperature difference value.

[0094] Step S2333: Based on preset weights, determine the flow coefficient according to the temperature exceedance and the temperature difference exceedance.

[0095] Step S2334: Based on the initial flow rate, determine the total flow rate according to the flow rate coefficient.

[0096] In over-temperature protection mode, the adjustment strategy is designed as a multi-objective decision-making process. Because the temperature difference is large in over-temperature protection mode, it simultaneously faces two problems: excessively high temperature in a single cooling unit and excessively large temperature differences between multiple cooling units. Therefore, to balance these two problems, this embodiment introduces a preset weighting method.

[0097] Specifically, firstly, the temperature exceedance M is calculated using a first temperature value T1, a second temperature value T2, and a preset temperature x. Then, the maximum temperature value T is determined by comparing the magnitudes of the first temperature value T1 and the second temperature value T2. max That is, T max =max(T1,T2), the temperature exceedance M satisfies the following relationship: M=(T max -x) / x.

[0098] Temperature over-limit is used to measure the severity of the highest temperature in multiple cooling units exceeding a preset temperature x. The higher the maximum temperature value, the more urgent the over-temperature problem.

[0099] Secondly, the temperature difference exceeding the limit N is calculated by setting the temperature difference y and the temperature difference value ΔT. The temperature difference exceeding the limit N satisfies the following relationship: N=(ΔT-y) / y.

[0100] Temperature difference exceedance is used to measure the severity of temperature difference exceeding temperature difference node y. The larger the temperature difference exceedance, the more urgent the temperature imbalance problem is.

[0101] Next, the flow coefficient W is calculated based on the weighted average of the preset weights. In this embodiment, the weight of temperature exceeding the limit is 0.7, and the weight of temperature difference exceeding the limit is 0.3. Therefore, the flow coefficient W satisfies the following relationship: W = 0.7M + 0.3N.

[0102] This weight comprehensively reflects the urgency and severity of both the overheating and temperature difference issues. Finally, the total flow rate Q at inlet 33 is adjusted using the flow coefficient W. total Total traffic Q total The following relationship must be satisfied: Q total =Q (1+W).

[0103] Where Q is the preset basic flow rate of inlet 33.

[0104] As a specific implementation method, assuming the temperature exceeds the limit by 10% and the temperature difference exceeds the limit by 20%, then W = 0.7 0.1 + 0.3 0.2, that is, when W=0.13, the total flow rate increases by 13%. This embodiment can intelligently balance multiple conflicting control objectives in the over-temperature protection mode through the above method, and achieves fine control that takes into account the temperature difference balance as much as possible while limiting the maximum temperature as the primary task, thus solving the problem that a single control objective may lead to negative optimization in extreme cases.

[0105] Further, please refer to Figure 8 , Figure 8 This is a flowchart illustrating the fifth embodiment of the cooling plate temperature control method of the present invention. Step S30 includes: Step S31: Determine the target displacement of the valve core of the proportional valve according to the distribution ratio.

[0106] Step S32: Obtain the current displacement of the valve core, adjust the current displacement to the target displacement, and update the PWM duty cycle.

[0107] Based on the flow rate Q1 of the first outlet 31 and the flow rate Q2 of the second outlet 32, in this embodiment, the flow rate value can be converted into the target displacement L that the valve core needs to move by means of a pre-calibrated flow-displacement characteristic curve or by looking up a table.

[0108] Specifically, a displacement sensor, such as a linear variable differential transformer or a Hall effect position sensor, can be installed inside the proportional valve 30 to obtain the current displacement L0 of the valve core.

[0109] Subsequently, the actual displacement L0 is compared with the target displacement L, and the displacement error ΔL = L - L0 is calculated. Based on this displacement error, an adjustment signal is generated by the controller, which is ultimately converted into a current value I used to drive the electromagnet in the proportional valve 30. For example, if the current displacement is less than the target displacement, the driving current is increased to overcome the spring force and friction, thus pushing the valve core to move.

[0110] This embodiment, through the above-described method, can actively and in real-time compensate for the nonlinear effects caused by the hysteresis of the electromagnet in the proportional valve 30, the mechanical friction of the valve core movement, changes in spring preload, and external load interference. This ensures that the actual position of the valve core accurately follows the intent of the control algorithm. Even if there is minor wear or lag in the mechanical components, it can be dynamically compensated by continuously adjusting the drive current, thereby ensuring that the calculated flow rates Q1 and Q2 can be accurately executed at the physical level.

[0111] Further, please refer to Figure 9 , Figure 9 This is a schematic flowchart of the sixth embodiment of the cooling plate temperature control method of the present invention. Step S31 includes: Step S311: Based on the target displacement, determine the displacement error according to the current displacement of the valve core.

[0112] Step S312: When the displacement error is greater than the preset error and the duration of the displacement error is greater than the preset duration, obtain historical data of the most recent preset number of timestamps.

[0113] In this embodiment, the position of the valve core is adjusted based on the displacement error between the current displacement and the target displacement, as well as the duration of the displacement error.

[0114] Specifically, if the absolute value of the displacement error between the current displacement L0 and the target displacement L exceeds a preset error within a continuous preset time period or multiple consecutive detection cycles, it is determined that the difference between the current displacement and the target displacement is significant, and a simple position closed loop cannot effectively compensate for the current displacement, thus requiring adjustment of the valve core position. The preset time period can be set, for example, to 5 seconds, and the preset error can be set to 0.2 mm. Alternatively, if the displacement error exceeds the preset error within 10 consecutive detection cycles, it indicates a significant difference between the current displacement and the target displacement, necessitating adjustment of the current displacement to achieve the target displacement.

[0115] Step S313: Determine the corresponding deviation characteristics based on the historical data.

[0116] During the adjustment of the current displacement, the historical displacement deviation records in the memory are accessed first. For example, the displacement deviation data within the last 10 times are analyzed to calculate the statistical characteristics of the deviation, such as steady-state error or fluctuation amplitude.

[0117] If a characteristic in the displacement deviation data exceeds a set value, such as a fluctuation amplitude exceeding that set value, it indicates that the system response is too oscillating. In this case, the proportional coefficient K is reduced by 20%. p For example, this enhances the stability of the system. Conversely, if other characteristics in the deviation data are considered abnormal, such as a persistently non-zero steady-state error, it indicates that the system has a steady-state error, and the integral quantity K is corrected according to a predetermined strategy. i In this embodiment, K can be slightly increased. i This eliminates steady-state error.

[0118] In this embodiment, besides adjusting K according to the fluctuation amplitude and steady-state error, p and K i In addition, it may include adjusting the differential coefficient K. d The selection of these parameters can be determined based on the identification results of historical deviation data.

[0119] Further, please refer to Figure 10 , Figure 10 This is a schematic flowchart of the seventh embodiment of the cooling plate temperature control method of the present invention. After step S30, it further includes: Step S40: Based on the preset runtime, determine whether the current runtime is greater than or equal to the preset runtime.

[0120] Step S50: If the current runtime is greater than or equal to the preset runtime, enter the self-diagnosis mode and return to step S10.

[0121] In this embodiment, a time-triggered system maintenance and self-diagnosis function is set up. A running timer is set in the controller. When the continuous running time of the device exceeds a preset duration, such as 1 hour, the controller inserts and executes a system self-diagnosis program independent of the regular flow regulation control after the current control cycle ends, or before the start of the next control cycle, or as a background task.

[0122] The preset duration of 1 hour is an empirical value designed to ensure that a comprehensive health check is performed after the system has undergone a sufficiently long period of continuous operation and reached a stable state. This self-diagnostic procedure is independent of the main control loop, meaning its execution will not interfere with real-time temperature difference detection, mode switching, and flow regulation.

[0123] This self-diagnostic program can include a series of checks, such as: verifying whether the readings of the first temperature sensor 21 and the second temperature sensor 22 are within reasonable ranges and whether there are open or short circuit faults; checking whether the proportional valve 30 is blocked through flow meter feedback; analyzing whether the valve core's response delay and deviation exceed normal ranges; or checking the memory integrity of control parameter data, etc. After execution, the system generates a status record, and if an anomaly is detected, a maintenance alarm signal is triggered. This allows potential faults to be identified before they evolve into functional failures or safety hazards, helping to address the problem of declining system reliability and untimely maintenance over long-term operation, thus strengthening the system's inherent safety and maintainability.

[0124] In addition, to solve the above problems, the present invention also proposes a computer-readable storage medium storing an adaptive weighted fusion vehicle weight estimation program, which, when executed by a processor, implements the steps of the vehicle weight estimation method described above.

[0125] Computer-readable storage media may take the form of any combination of one or more readable media. A readable medium may be a readable signal medium or a readable storage medium. A readable storage medium may, for example, include, but is not limited to, electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatuses, or devices, or any combination thereof. More specific examples of readable storage media (a non-exhaustive list) include: electrical connections having one or more wires, portable disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof.

[0126] In addition to the methods and devices described above, embodiments of this application may also be computer program products, which include computer program information. When the computer program information is run by a processor, it causes the processor to execute the steps in a vehicle weight estimation method according to various embodiments of this application.

[0127] Computer program products can be written in any combination of one or more programming languages ​​to perform the operations of the embodiments of this application. The programming languages ​​include object-oriented programming languages ​​such as Java and C++, as well as conventional procedural programming languages ​​such as C or similar languages. The program code can be executed entirely on the user's computing device, partially on the user's computing device, as a standalone software package, partially on the user's computing device and partially on a remote computing device, or entirely on a remote computing device or server.

[0128] Furthermore, to address the aforementioned problems, the present invention also proposes a vehicle that utilizes the cooling plate temperature control method described above. This vehicle may be, for example, an excavator or a crane.

[0129] like Figure 11 As shown, the vehicle 100 includes one or more processors 101 and memory 102.

[0130] The processor 101 may be a central processing unit (CPU) or other form of processing unit with data processing capabilities and / or instruction execution capabilities, and may control other components in the vehicle 100 to perform desired functions.

[0131] The memory 102 may include one or more computer program products, which may include various forms of computer-readable storage media, such as volatile memory and / or non-volatile memory. The volatile memory may include, for example, random access memory (RAM) and / or cache memory. The non-volatile memory may include, for example, read-only memory (ROM), hard disk, flash memory, etc. One or more computer program instructions may be stored on the computer-readable storage medium, and the processor 101 may execute the program instructions to implement a vehicle weight estimation method and / or other desired functions according to the various embodiments of this application described above.

[0132] In one example, vehicle 100 may also include input device 103 and output device 104, which are interconnected via a bus system and / or other forms of connection mechanism (not shown).

[0133] When the vehicle is a standalone device, the input device 103 can be a communication network connector for receiving the collected input signals from the first device and the second device.

[0134] In addition, the input device 103 may also include, for example, a keyboard, a mouse, etc.

[0135] The output device 104 can output various information to the outside, including determined distance information, direction information, etc. The output device 104 may include, for example, a display, a speaker, a printer, and a communication network and its connected remote output devices, etc.

[0136] Of course, for the sake of simplicity, Figure 11 Only some of the components of the vehicle 100 relevant to this application are shown in this illustration; components such as buses, input / output interfaces, etc., are omitted. In addition, the vehicle 100 may include any other suitable components depending on the specific application.

[0137] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A method for controlling the temperature of a cooling plate, characterized in that, The cooling plate is applied to a cooling plate, which includes a first cooling section, a second cooling section, and a proportional valve. The proportional valve has an inlet, a first outlet connected to the first cooling section, and a second outlet connected to the second cooling section. The cooling plate temperature control method includes: Based on a first temperature value and a second temperature value, a temperature difference between the first temperature value and the second temperature value is determined; wherein, the first temperature value is determined by measuring the temperature of the first cooling unit, the second temperature value is determined by measuring the temperature of the second cooling unit, and the temperature difference is the absolute value of the temperature difference between the first temperature value and the second temperature value. The distribution ratio between the first water outlet and the second water outlet is determined based on the temperature difference value; wherein, the total flow rate of the water inlet and the flow rate ratio of the cooling medium flowing into the first cooling section through the first water outlet and into the second cooling section through the second water outlet are adjusted by the distribution ratio, so that the cooling intensity of the first cooling section and the cooling intensity of the second cooling section are proportional to the corresponding heat source intensity. The proportional valve is opened according to the specified distribution ratio.

2. The cooling plate temperature control method as described in claim 1, characterized in that, The step of determining the distribution ratio between the first water outlet and the second water outlet based on the temperature difference value includes: Multiple temperature difference nodes are determined based on a preset temperature difference, arranged from smallest to largest. The adjustment mode is determined based on the temperature difference value and the temperature difference node. Based on the adjustment mode, the allocation ratio is determined according to the temperature difference value.

3. The cooling plate temperature control method as described in claim 2, characterized in that, Based on the adjustment mode, the step of determining the distribution ratio according to the temperature difference value includes: When the adjustment mode is the first mode, the allocation ratio is adjusted to the preset allocation ratio; When the adjustment mode is the second mode, the allocation ratio is determined based on the preset temperature difference and the temperature difference value; When the adjustment mode is the third mode, the total flow rate is determined based on the preset temperature and the temperature difference value, the first temperature value, and the second temperature value. When the adjustment mode is the fourth mode, the total flow rate is adjusted to the rated flow rate, and the allocation ratio is adjusted to the preset allocation ratio.

4. The cooling plate temperature control method as described in claim 3, characterized in that, The step of determining the distribution ratio based on the preset temperature difference and the temperature difference value includes: The growth coefficient is determined based on the ratio of the temperature difference to the preset temperature difference; The allocation ratio is determined based on the growth coefficient.

5. The cooling plate temperature control method as described in claim 3, characterized in that, The step of determining the total flow rate based on a preset temperature, according to the temperature difference value, the first temperature value, and the second temperature value, includes: The temperature exceedance is determined based on the first temperature value, the second temperature value, and the preset temperature; The temperature difference exceeding the limit is determined based on the preset temperature difference and the temperature difference value; The flow coefficient is determined based on the preset weights, according to the temperature exceeding the limit and the temperature difference exceeding the limit; The total flow rate is determined based on the initial flow rate and the flow rate coefficient.

6. The cooling plate temperature control method as described in claim 2, characterized in that, After determining the adjustment mode based on the temperature difference value and the temperature difference node, the method further includes: Compare the first temperature value with the second temperature value, and determine the maximum value based on the comparison result; Based on the first warning temperature and the second warning temperature, the maximum value is compared with the first warning temperature and the second warning temperature one by one, wherein the second warning temperature is greater than the first warning temperature; If the maximum value is greater than the first warning temperature, the adjustment mode will be switched to the third mode; If the maximum value is greater than the second warning temperature, the adjustment mode will be switched to the fourth mode.

7. The cooling plate temperature control method as described in claim 1, characterized in that, The step of opening the proportional valve according to the distribution ratio includes: The target displacement of the valve core of the proportional valve is determined according to the allocation ratio. Obtain the current displacement of the valve core, adjust the current displacement to the target displacement, and update the PWM duty cycle.

8. The cooling plate temperature control method as described in claim 7, characterized in that, The step of obtaining the current displacement of the valve core and adjusting the current displacement to the target displacement includes: Based on the target displacement, the displacement error is determined according to the current displacement of the valve core; If the displacement error is greater than a preset error and the duration of the displacement error is greater than a preset duration, historical data of the most recent preset number of times is obtained. Based on the historical data, the corresponding deviation characteristics are determined; The proportional coefficient and integral coefficient are determined based on the aforementioned deviation characteristics; The current displacement is compensated based on the proportional coefficient and the integral coefficient.

9. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores an intelligent vibration damping program, which, when executed by a processor, implements the steps of the cooling plate temperature control method as described in any one of claims 1 to 8.

10. A vehicle, characterized in that, The vehicles include: A controller, comprising a processor and a memory, wherein the memory stores a computer program, and the processor executes the computer program to perform the cooling plate temperature control method according to any one of claims 1 to 8.

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