Energy-saving energy storage device cooling system and energy-saving method thereof

Abstract

The application discloses an energy-saving energy storage device cooling system and an energy-saving method thereof, characterized by maintaining the energy storage device in a preset working temperature by using the cooling system, comprising: an ambient temperature sensor, which senses the actual temperature of the current environment and generates a temperature signal from the data in the actual temperature, and sets the preset working temperature of the energy storage device; a thermal management module, which acquires the temperature signal generated by the ambient temperature sensor and cools the energy storage device by using the blowing mode in the thermal management module, so that the energy storage device operates at the preset working temperature; and an adjustable guide plate, which is installed at the bottom of the energy storage device and is used for distributing the hot air flow generated by the energy storage device. By using the cooling system, the energy storage device can adapt to different climate changes during operation, and energy saving is achieved at the same time.

Description

Technical Field

[0001] This invention relates to the field of new energy technology, specifically to an energy-saving cooling system for an energy storage device and its energy-saving method. Background Technology

[0002] In the rapid development of new energy, energy storage devices have broad development prospects due to their advantages of short construction cycle and strong environmental adaptability. However, with the continuous improvement of overall energy density and the reduction of manufacturing costs, battery safety accidents of energy storage systems characterized by thermal runaway occur frequently, seriously threatening the safety of electricity use and the lives of relevant personnel. Therefore, preventing thermal runaway of energy storage devices has become a research hotspot for energy storage systems.

[0003] In existing energy storage technologies, the harsh environments of ultra-low and ultra-high temperatures can cause abnormal cold and thermal runaway in energy storage devices and their batteries, rendering them unusable. Furthermore, improper use can lead to energy consumption. Improving the safety and reliability of the cooling system in energy storage devices can enhance their safety and conserve energy. Summary of the Invention

[0004] This invention provides an energy-saving cooling system for an energy storage device and an energy-saving method thereof, in order to solve the above-mentioned problems existing in the prior art.

[0005] An energy-saving cooling system for an energy storage device is characterized by maintaining the energy storage device within a preset operating temperature using a cooling system, wherein the cooling system comprises:

[0006] An ambient temperature sensor senses the actual temperature of the current environment and generates a temperature signal from the data of the actual temperature, while simultaneously setting the preset operating temperature of the energy storage device.

[0007] The thermal management module acquires the temperature signal generated by the ambient temperature sensor and uses the blowing mode in the thermal management module to cool the energy storage device, so that the energy storage device operates at the preset operating temperature.

[0008] An adjustable deflector is installed at the bottom of the energy storage device to distribute the hot airflow generated by the energy storage device.

[0009] Preferably, an energy-saving energy storage device cooling system is characterized by further comprising:

[0010] A battery temperature sensor detects the battery temperature generated by the heat generated by the battery in the energy storage device during operation.

[0011] A battery mover acquires the battery temperature sensed by the battery temperature sensor and controls the distance between the batteries based on the battery temperature:

[0012] An adjustable battery air inlet is installed in the energy storage device. The length of the battery air inlet is adjusted according to the battery temperature so that the battery heats up within a preset battery operating temperature range.

[0013] Preferably, the blowing mode includes:

[0014] The thermal management module is equipped with an air outlet, a fan baffle, and a fan.

[0015] There are several air outlets. When the energy storage device generates heat, the hot air is discharged from the air outlets after the thermal management module operates. The fan baffle consists of two wedge-shaped baffles with a distance between them for the hot air to flow out.

[0016] The thermal management module is connected to the ambient temperature sensor. When the ambient temperature sensor detects that the current ambient temperature is higher than the preset operating temperature, the thermal management module drives the fan to rotate.

[0017] Preferably, the preset operating temperature includes:

[0018] The temperature difference between the energy storage device and the external environment is defined as the first temperature difference and the second temperature difference.

[0019] The value of the second temperature difference is greater than the value of the first temperature difference;

[0020] The temperature difference between the current energy storage device and the external environment is measured. When the temperature difference is greater than the second temperature difference, the thermal management module drives the fan to rotate.

[0021] The temperature in the energy storage device is continuously measured. When the temperature difference between the energy storage device and the external environment is within the range of the first temperature difference and the second temperature difference, the thermal management module shuts down the fan that is in the rotating state and keeps the temperature at the preset operating temperature.

[0022] Preferably, the adjustable guide vane includes:

[0023] The height of the adjustable guide vane is set as a first adjustment height and a second adjustment height. When the energy storage device is not running, the adjustable guide vane is located at the first adjustment height.

[0024] The first adjustment height is higher than the second adjustment height, and the amount of hot air discharged from the second adjustment height is greater than the amount of hot air discharged from the first adjustment height;

[0025] When the temperature in the energy storage device is higher than the preset energy storage operating temperature, the energy storage device drives the adjustable guide plate to slowly move from the first height position to the second adjustable height position.

[0026] When the temperature of the energy storage device drops to the preset operating temperature, the adjustable baffle can be adjusted back to the first adjustment height to keep the temperature in the energy storage device constant.

[0027] Preferably, the battery mover includes:

[0028] The battery in the energy storage device is placed in a battery mover, which is grid-shaped and the distance between the grids changes continuously as the battery temperature rises.

[0029] The battery operating temperature range is set between the maximum and minimum allowable temperatures. The battery temperature between the maximum and minimum allowable temperatures varies depending on the movement of the battery and the battery air inlet.

[0030] The battery mover is connected to the battery temperature sensor. When the battery is supplying power to the energy storage device, it is in a state of continuous heat generation. The battery temperature sensor senses the battery temperature and determines whether the battery mover needs to be operated. If so, the battery air inlet is opened until the battery temperature drops to the battery operating temperature range.

[0031] Preferably, an energy-saving energy storage device cooling system is characterized by further comprising:

[0032] Monitoring fire extinguishers, alarms, and fire suppression systems:

[0033] The monitoring fire extinguisher is connected to the alarm and the battery temperature sensor, and simultaneously monitors the usage of the energy storage device and the battery.

[0034] A first temperature threshold and a second temperature threshold are set, wherein the second temperature threshold is higher than the first temperature threshold.

[0035] When the battery temperature sensor detects that the battery temperature has reached the first temperature threshold, the monitoring fire extinguisher will activate the alarm. When the battery temperature sensor detects that the battery temperature has reached the second threshold, the power will be cut off immediately, and the fire extinguishing device will be activated to extinguish the fire while the alarm is being activated. The monitoring fire extinguisher will also record the fire extinguishing event.

[0036] Preferably, driving the fire extinguishing device to extinguish the fire includes:

[0037] The fire extinguishing system is equipped with a cooling spray device and a pressure relief port.

[0038] The cooling spray device is used to spray coolant into the battery when the battery temperature is too high, thus physically cooling the battery in operation.

[0039] A pressure relief port is connected to one side of the cooling spray device. Since a large amount of pressure is generated when the coolant is sprayed, the pressure relief port discharges the pressure generated by the cooling spray device to the outside.

[0040] The cooling spray device is connected to a battery temperature sensor. When the battery temperature sensor detects that the current battery temperature is within the battery temperature operating range, the cooling spray device is turned off.

[0041] Preferably, an energy-saving method for a cooling system of an energy-saving energy storage device is characterized by comprising:

[0042] S100: Sensing the actual temperature of the current environment and generating a temperature signal from the data of the actual temperature, while setting the preset operating temperature of the energy storage device;

[0043] S200: Acquire the temperature signal and use the blowing mode to cool the energy storage device, so that the energy storage device operates at the preset operating temperature;

[0044] S300: An adjustable-angle baffle is installed at the bottom of the energy storage device to distribute the hot airflow generated by the energy storage device.

[0045] Preferably, an energy-saving method for a cooling system of an energy-saving energy storage device is characterized by further comprising:

[0046] S400: Battery temperature generated by the heat generated by the battery during operation in an inductive energy storage device;

[0047] S500: Acquires the sensed battery temperature and controls the distance between batteries based on the battery temperature.

[0048] S600: An adjustable battery air inlet is installed in the energy storage device. The length of the battery air inlet is adjusted according to the battery temperature so that the battery heats up within a preset battery operating temperature range.

[0049] Compared with the prior art, the present invention has the following advantages:

[0050] This invention provides an energy-saving cooling system and method for an energy storage device. By measuring the ambient temperature and the temperature of the energy storage device, and adjusting the temperature within the device according to temperature changes, it maximizes resource savings and reduces energy consumption. By adjusting the distance between the batteries, it prevents the batteries from operating at excessively high temperatures, thus avoiding the possibility of fire. If the energy storage device catches fire due to excessively high ambient temperatures, a fire extinguishing device is used to extinguish the fire.

[0051] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures particularly pointed out in the written description, claims, and drawings.

[0052] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0053] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0054] Figure 1 This is a structural diagram of a cooling system for an energy-saving energy storage device according to an embodiment of the present invention;

[0055] Figure 2 This is an internal structural diagram of the energy storage device in an embodiment of the present invention;

[0056] Figure 3 This is a flowchart illustrating the steps of an energy-saving method for a cooling system of an energy-saving energy storage device according to an embodiment of the present invention. Detailed Implementation

[0057] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0058] Reference Figure 1 This invention provides an energy-saving cooling system for an energy storage device, characterized in that the cooling system maintains the energy storage device within a preset operating temperature. The cooling system includes:

[0059] An ambient temperature sensor senses the actual temperature of the current environment and generates a temperature signal from the data of the actual temperature, while simultaneously setting the preset operating temperature of the energy storage device.

[0060] The thermal management module acquires the temperature signal generated by the ambient temperature sensor and uses the blowing mode in the thermal management module to cool the energy storage device, so that the energy storage device operates at the preset operating temperature.

[0061] An adjustable deflector is installed at the bottom of the energy storage device to distribute the hot airflow generated by the energy storage device.

[0062] The working principle of the above technical solution is as follows: The solution adopted in this embodiment is to use a temperature sensor to sense the temperature of the outdoor environment when the energy storage device is in operation, and to set the energy storage device to avoid overheating and cooling the device according to the temperature of the current environment and the state inside the device. In the blowing mode, the hot air generated in the energy storage device is discharged, so that the energy storage device operates at the preset working temperature; at the same time, the hot air is distributed through an adjustable guide plate.

[0063] The beneficial effects of the above technical solution are as follows: by using the solution provided in this embodiment, the energy storage device is cooled by using a thermal management module, so as to minimize energy consumption and keep the energy storage device in a stable state.

[0064] In another embodiment, an energy-saving energy storage device cooling system is characterized by further comprising:

[0065] A battery temperature sensor detects the battery temperature generated by the heat generated by the battery in the energy storage device during operation.

[0066] A battery mover acquires the battery temperature sensed by the battery temperature sensor and controls the distance between the batteries based on the battery temperature:

[0067] An adjustable battery air inlet is installed in the energy storage device. The length of the battery air inlet is adjusted according to the battery temperature so that the battery heats up within a preset battery operating temperature range.

[0068] The working principle of the above technical solution is as follows: In this embodiment, the battery is in a state of continuous heat generation while supplying power to the energy storage device. A battery temperature sensor detects the current battery temperature and determines whether cooling is needed to prevent overheating and accidents. When the battery temperature is too high, a battery mover is used to adjust the spacing between the batteries, allowing for better heat dissipation. After the batteries are moved to increase their spacing, a battery air inlet is provided on one side of the battery to absorb cold air from the outside for cooling. The battery air inlet is adjustable in length, ranging from 55mm to 180mm without changing the size of the energy storage device. Under normal conditions, the battery air inlet is 50mm long. During hot summer months, when the battery is continuously generating heat, the length of the battery air inlet gradually increases from 55mm to 180mm to improve heat dissipation and achieve a cooling effect. During harsh, cold winter months, the length of the battery air inlet remains constant at 50mm to reduce the impact of cold air on battery operation.

[0069] When dissipating heat from the battery, it is necessary to calculate the battery's temperature heat flux density and the battery's temperature based on environmental changes. The formula is as follows:

[0070]

[0071] Where U0 is the battery open-circuit voltage, U is the operating voltage, and I is the battery charging and discharging current, with discharging being positive and charging being negative. Let R be the entropy-thermal coefficient, R be the battery internal resistance, V be the battery volume, and q be the entropy-thermal coefficient. v Where M is the heat flux density of the battery, and T is the heat in the energy storage device.c The temperature in the energy storage device is K, t is time, and K is K. ac T is the heat transfer coefficient between the environment and the energy storage device. a For ambient temperature, K ac (T a -T c T represents the heat exchange between ambient air and the battery. b For battery temperature, K bc K is the heat exchanger between the battery and the energy storage device. bc (T b -T c K represents the heat exchange between the battery and the energy storage device. sc For the heat exchange between the ground and the energy storage device, T s For ground temperature, K sc (T s -T c ) represents the heat exchange between the ground and the energy storage device, q rad For radiative heat exchange between the sky and the energy storage device. The calculated thermal performance values ​​are: GΔT, where G is the heat power generated by the thermal management module during use; ΔT is the temperature difference between the battery and the external environment; and C is the battery's heat capacity. The heat generated by the thermal management module during operation.

[0072] The beneficial effects of the above technical solution are as follows: by using the solution provided in this embodiment, the battery temperature is sensed and the battery mover is moved according to the temperature, so that the battery can achieve a better cooling effect, and the battery heat dissipation is accelerated through the battery air inlet, thereby reducing the battery energy consumption.

[0073] In another embodiment, the blowing mode includes:

[0074] The thermal management module is equipped with an air outlet, a fan baffle, and a fan.

[0075] There are several air outlets. When the energy storage device generates heat, the hot air is discharged from the air outlets after the thermal management module operates. The fan baffle consists of two wedge-shaped baffles with a distance between them for the hot air to flow out.

[0076] The thermal management module is connected to the ambient temperature sensor. When the ambient temperature sensor detects that the current ambient temperature is higher than the preset operating temperature, the thermal management module drives the fan to rotate.

[0077] The working principle of the above technical solution is as follows: In this embodiment, the fan in the thermal management module provides cool air, and the fan has a single-phase fan speed regulator to control the fan speed. When the fan rotates, the airflow flows in from the lower left air inlet to cool the energy storage device, and flows out from the upper right air outlet. The fan baffle is designed in a wedge shape with a height of 20mm. When the fan rotates, the exhausted hot airflow is discharged through the wedge-shaped fan baffle to achieve the purpose of cooling.

[0078] The beneficial effects of the above technical solution are as follows: by using the solution provided in this embodiment, the energy storage device is cooled by using a fan to achieve the purpose of safe energy storage; the use of wedge baffles allows the hot airflow generated by the energy storage device to be evenly distributed, the flow rate distribution and temperature distribution are more uniform, and the temperature difference between the energy storage device and the environment becomes moderate.

[0079] In another embodiment, the preset operating temperature includes:

[0080] The temperature difference between the energy storage device and the external environment is defined as the first temperature difference and the second temperature difference.

[0081] The value of the second temperature difference is greater than the value of the first temperature difference;

[0082] The temperature difference between the current energy storage device and the external environment is measured. When the temperature difference is greater than the second temperature difference, the thermal management module drives the fan to rotate.

[0083] The temperature in the energy storage device is continuously measured. When the temperature difference between the energy storage device and the external environment is within the range of the first temperature difference and the second temperature difference, the thermal management module shuts down the fan that is in the rotating state and keeps the temperature at the preset operating temperature.

[0084] The working principle of the above technical solution is as follows: The solution adopted in this embodiment is to set a preset working temperature in the energy storage device, the preset working temperature is 15℃, and measure the temperature difference between the energy storage device and the external environment, wherein the first temperature difference is 5℃ and the second temperature difference is 10℃. When the temperature difference between the energy storage device and the external environment reaches 15℃, the fan is turned on to cool the energy storage device until the temperature difference drops to 5℃, and the temperature of the energy storage device is maintained at 15℃.

[0085] The beneficial effects of the above technical solution are as follows: by using the solution provided in this embodiment, the energy storage device can be prevented from overheating and the external environment from being too cold, thus avoiding accidents caused by the energy storage device overheating.

[0086] In another embodiment, the adjustable deflector includes:

[0087] The height of the adjustable guide vane is set as a first adjustment height and a second adjustment height. When the energy storage device is not running, the adjustable guide vane is located at the first adjustment height.

[0088] The first adjustment height is higher than the second adjustment height, and the amount of hot air discharged from the second adjustment height is greater than the amount of hot air discharged from the first adjustment height;

[0089] When the temperature in the energy storage device is higher than the preset energy storage operating temperature, the energy storage device drives the adjustable guide plate to slowly move from the first height position to the second adjustable height position.

[0090] When the temperature of the energy storage device drops to the preset operating temperature, the adjustable baffle can be adjusted back to the first adjustment height to keep the temperature in the energy storage device constant.

[0091] The working principle of the above technical solution is as follows: In this embodiment, the adjustable guide plate is located below the energy storage device. Initially, the adjustable guide plate is at a second adjustment height of 80mm. As the battery generates heat, the adjustable guide plate gradually rises to a first adjustment height of 0mm according to the temperature inside the energy storage device. Furthermore, as the height of the adjustable guide plate decreases, more hot air is discharged. When the height of the adjustable guide plate is 0mm, it is in a horizontal state, and no hot air is discharged from within.

[0092] The beneficial effects of the above technical solution are as follows: by adopting the solution provided in this embodiment, the distribution of airflow inside the energy storage device can be adjusted to a certain extent by changing the height of the adjustable guide plate, thereby improving the cooling effect of the energy storage device and keeping the energy storage device in a constant temperature state during operation.

[0093] In another embodiment, the battery mover includes:

[0094] The battery in the energy storage device is placed in a battery mover, which is grid-shaped and the distance between the grids changes continuously as the battery temperature rises.

[0095] The battery operating temperature range is set between the maximum and minimum allowable temperatures. The battery temperature between the maximum and minimum allowable temperatures varies depending on the movement of the battery and the battery air inlet.

[0096] The battery mover is connected to the battery temperature sensor. When the battery is supplying power to the energy storage device, it is in a state of continuous heat generation. The battery temperature sensor senses the battery temperature and determines whether the battery mover needs to be operated. If so, the battery air inlet is opened until the battery temperature drops to the battery operating temperature range.

[0097] The working principle of the above technical solution is as follows: In this embodiment, the battery mover is located in the gap of the power supply battery of the energy storage device, and the battery mover is grid-shaped. The maximum operating temperature that the battery can withstand is 40°C, and the minimum operating temperature is -15°C. When the battery temperature sensor senses that the current battery temperature is higher than 40°C, it immediately drives the battery mover to increase the distance between the batteries based on the initial 5mm gap between the batteries. The distance between the batteries is increased to 30mm. When the temperature drops to within the battery operating temperature range, the battery mover brings the distance between the batteries closer again, restoring the 5mm gap.

[0098] Calculating the internal parameters of a battery reflects its internal chemical reaction state and extent, which helps determine its operating status and implement appropriate cooling measures. The battery's operation involves two processes: heat generation and heat transfer, as shown in the following formula:

[0099]

[0100] Among them, during the heat generation process, I q I is the battery's operating current, γ is the battery's total overpotential, and I is the operating current of the battery. q γ is irreversible heat, T q For battery temperature, E ocv This is the open-circuit voltage of the battery. V is the entropy change coefficient, with a value of 0.22 mV / K, Q is the total heat generated by the battery, and V is the entropy change coefficient. h For the volume of the battery, U h Let H be the battery terminal voltage, H be the heat output per unit volume of the battery; during the heat transfer process, the battery mainly involves heat conduction and heat convection, ρ be the average density of the battery, and C be the average density of the battery. p Let R be the specific heat capacity at constant pressure of the battery, k be the thermal conductivity of the battery, and R be the specific heat capacity at constant pressure of the battery. q V is the heat dissipation power per unit volume of the battery terminals. h For the volume of the battery terminals, denoted as , where is the heat generated by battery thermal conduction, h is the convective heat transfer coefficient, T1 is the ambient cooling fluid temperature, T2 is the battery surface temperature, and q is the heat flux density generated during thermal convection.

[0101] The beneficial effects of the above technical solution are as follows: by using the solution provided in this embodiment, the distance between batteries is moved by the battery mover, so that the batteries can dissipate heat better during the heating process, and different treatment methods are adopted according to different temperatures, thereby reducing resource consumption.

[0102] In another embodiment, an energy-saving energy storage device cooling system is characterized by further comprising:

[0103] Monitoring fire extinguishers, alarms, and fire suppression systems:

[0104] The monitoring fire extinguisher is connected to the alarm and the battery temperature sensor, and simultaneously monitors the usage of the energy storage device and the battery.

[0105] A first temperature threshold and a second temperature threshold are set, wherein the second temperature threshold is higher than the first temperature threshold.

[0106] When the battery temperature sensor detects that the battery temperature has reached the first temperature threshold, the monitoring fire extinguisher will activate the alarm. When the battery temperature sensor detects that the battery temperature has reached the second threshold, the power will be cut off immediately, and the fire extinguishing device will be activated to extinguish the fire while the alarm is being activated. The monitoring fire extinguisher will also record the fire extinguishing event.

[0107] The working principle of the above technical solution is as follows: The solution adopted in this embodiment is that the battery will explode at extremely high temperatures. The first temperature threshold is 60°C and the second temperature threshold is 70°C. The battery temperature sensor determines whether the battery temperature exceeds the threshold. When the temperature reaches the first threshold, the alarm will sound and the staff should immediately deal with the current high battery temperature. When the temperature reaches the second threshold, it indicates that the battery may explode due to high temperature. In this case, it is necessary to activate the fire extinguishing device to force cool the battery.

[0108] The beneficial effects of the above technical solution are as follows: By using the solution provided in this embodiment, the battery can be cooled down by using a monitoring fire extinguisher, alarm and fire extinguishing device, which can prevent the possibility of battery explosion in time. The monitoring fire extinguisher can be used to observe the battery usage in the energy storage device in real time and record the battery fire extinguishing process, which is beneficial for handling the battery high temperature situation in the future.

[0109] In another embodiment, the method of driving the fire extinguishing device to extinguish a fire includes:

[0110] The fire extinguishing system is equipped with a cooling spray device and a pressure relief port.

[0111] The cooling spray device is used to spray coolant into the battery when the battery temperature is too high, thus physically cooling the battery in operation.

[0112] A pressure relief port is connected to one side of the cooling spray device. Since a large amount of pressure is generated when the coolant is sprayed, the pressure relief port discharges the pressure generated by the cooling spray device to the outside.

[0113] The cooling spray device is connected to a battery temperature sensor. When the battery temperature sensor detects that the current battery temperature is within the battery temperature operating range, the cooling spray device is turned off.

[0114] The working principle of the above technical solution is as follows: In this embodiment, when the battery temperature sensor detects that the battery temperature is at the second temperature threshold, the cooling spray device in the fire extinguishing device sprays coolant onto the battery. During the spraying of coolant, due to the generation of spray pressure, a pressure relief port needs to be set up. When the cooling spray device is working, the pressure relief port is in the open state and the pressure released by the cooling spray device is discharged.

[0115] The beneficial effects of the above technical solution are as follows: By using the solution provided in this embodiment, the battery is cooled by a cooling spray device, preventing the battery from exploding due to high temperature. The pressure generated by the coolant is released using a pressure relief port, preventing malfunction of the cooling spray device.

[0116] Reference Figure 3 In another embodiment, an energy-saving method for a cooling system of an energy-saving energy storage device is characterized by comprising:

[0117] S100: Sensing the actual temperature of the current environment and generating a temperature signal from the data of the actual temperature, while setting the preset operating temperature of the energy storage device;

[0118] S200: Acquire the temperature signal and use the blowing mode to cool the energy storage device, so that the energy storage device operates at the preset operating temperature;

[0119] S300: An adjustable-angle baffle is installed at the bottom of the energy storage device to distribute the hot airflow generated by the energy storage device.

[0120] The working principle of the above technical solution is as follows: The solution adopted in this embodiment is to sense the temperature of the outdoor environment when the energy storage device is in operation, and to set the energy storage device to avoid overheating and cooling the device according to the temperature of the current environment and the state inside the device. In the blowing mode, the hot air generated in the energy storage device is discharged, so that the energy storage device operates at the preset working temperature; at the same time, the hot air is distributed through the adjustable guide plate.

[0121] The beneficial effects of the above technical solution are as follows: by using the solution provided in this embodiment, the energy storage device is cooled to minimize energy consumption and to keep the energy storage device in a stable state.

[0122] In another embodiment, an energy-saving method for a cooling system of an energy-saving energy storage device is characterized by further comprising:

[0123] S400: Battery temperature generated by the heat generated by the battery during operation in an inductive energy storage device;

[0124] S500: Acquires the sensed battery temperature and controls the distance between batteries based on the battery temperature.

[0125] S600: An adjustable battery air inlet is installed in the energy storage device. The length of the battery air inlet is adjusted according to the battery temperature so that the battery heats up within a preset battery operating temperature range.

[0126] The working principle of the above technical solution is as follows: In this embodiment, the battery is in a state of continuous heat generation while supplying power to the energy storage device. By sensing the current battery temperature, it is determined whether the battery needs cooling to prevent overheating and accidents. When the battery temperature is too high, the spacing between the batteries is adjusted to allow for better heat dissipation. After the battery spacing is increased, a battery air inlet is provided on one side of the battery to absorb cold air from the outside to cool it. The battery air inlet is adjustable in length. Without changing the size of the energy storage device, the length of the battery air inlet can be adjusted from 55mm to 180mm. Under normal conditions, the length of the battery air inlet is 50mm. During hot summer months, when the battery is continuously generating heat during power supply, the length of the battery air inlet will gradually increase from 55mm to 180mm to improve heat dissipation and achieve a cooling effect. During harsh, cold winter months, the length of the battery air inlet remains constant at 50mm to reduce the impact of cold air on battery operation.

[0127] The beneficial effects of the above technical solution are as follows: by using the solution provided in this embodiment, the battery temperature is sensed and the battery mover is moved according to the temperature, so that the battery can achieve a better cooling effect, and the battery heat dissipation is accelerated through the battery air inlet, thereby reducing the battery energy consumption.

[0128] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. An energy saving energy storage device cooling system, characterized by The application discloses a cooling system for maintaining the energy storage device within a preset working temperature range, which comprises the following components: an ambient temperature sensor for sensing the actual temperature of the current environment and generating a temperature signal from the actual temperature, and setting the preset working temperature of the energy storage device; a thermal management module for acquiring the temperature signal generated by the ambient temperature sensor and cooling the energy storage device by using a blowing mode in the thermal management module, so that the energy storage device operates at the preset working temperature; an adjustable air guide plate installed at the bottom of the energy storage device and used for distributing the hot air flow generated by the energy storage device; a battery temperature sensor for sensing the battery temperature generated by the battery in the energy storage device in the working state; a battery mover for acquiring the battery temperature sensed by the battery temperature sensor and controlling the distance between the batteries according to the battery temperature; a battery air inlet installed in the energy storage device and used for adjusting the length of the battery air inlet according to the battery temperature, so that the battery generates heat within the preset battery working temperature range; wherein the adjustable air guide plate comprises: the height of the adjustable air guide plate is set as a first adjusting height and a second adjusting height, and the adjustable air guide plate is located at the position of the first adjusting height when the energy storage device is not running; the position of the first adjusting height is higher than the second adjusting height, and the hot air flow discharged from the second adjusting height is more than that from the first adjusting height; when the temperature in the energy storage device is higher than the preset working temperature, the adjustable air guide plate is driven to move from the position based on the first height to the position of the second adjusting height slowly; when the temperature in the energy storage device drops to the preset working temperature, the adjustable air guide plate is adjusted back to the first adjusting height, so that the temperature in the energy storage device operates in a constant temperature state; the battery mover comprises: the batteries in the energy storage device are placed in the battery mover, the battery mover is in a grid shape, and the distance between the grids is changed continuously as the battery temperature rises; the battery working temperature range is set as between the highest bearing temperature and the lowest bearing temperature, and the temperature of the battery between the highest bearing temperature and the lowest bearing temperature changes according to the movement of the battery mover and the battery air inlet; the battery mover is connected with the battery temperature sensor, the battery temperature sensor senses the battery temperature when the battery is in a continuous heating state for supplying power to the energy storage device, and judges whether the battery mover needs to be operated, if yes, the battery air inlet is opened until the battery temperature drops to the battery working temperature range; wherein, when judging whether the battery mover needs to be operated, the internal parameters of the battery are calculated according to the heat generation and heat transfer processes in the battery working process by the following formula, so as to reflect the chemical reaction state and the degree of progress of the battery internal parameters by calculating the internal parameters of the battery, which is beneficial to obtaining the working condition of the battery and making corresponding cooling measures: wherein, during the heat generation process, is the working current of the battery, is the total overpotential of the battery, is the irreversible heat, is the battery temperature, is the open-circuit voltage of the battery, is the entropy change coefficient, taking a value of 0.22 mv / k, and Q is the total heat generated by the battery, is the volume of the battery, is the terminal voltage of the battery, is the heat generation power per unit volume of the battery; during the heat transfer process, the battery includes heat conduction and heat convection, and p is the average density of the battery, is the specific heat capacity of the battery at constant voltage, is the thermal conductivity of the battery, is the heat generation power per unit volume of the battery pole, is the volume of the battery pole, is the heat value generated by the heat conduction of the battery, and h is the convective heat transfer coefficient, is the temperature of the ambient cooling fluid, is the temperature of the surface of the battery, and q is the heat flux density generated during the heat convection process.

2. The energy saving energy storage device cooling system of claim 1, wherein, the blowing mode comprises: an air outlet, a fan baffle and a fan are installed in the thermal management module. The air outlet holes are several, and when the energy storage device generates heat, the hot air flow is discharged from the air outlet holes after the heat management module operates; the fan baffle is two wedge-shaped baffles, and a distance is left between the wedge-shaped baffles for the outflow of the hot air flow; The heat management module is connected with the ambient temperature sensor, and when the ambient temperature sensor senses that the current ambient temperature is higher than the preset working temperature, the heat management module drives the fan to rotate.

3. The energy saving energy storage device cooling system of claim 2, wherein, The preset working temperature includes: The temperature difference between the temperature in the energy storage device and the temperature in the external environment is set as a first temperature difference and a second temperature difference; The value of the second temperature difference is greater than the value of the first temperature difference; The temperature difference between the current temperature in the energy storage device and the temperature in the external environment is measured, and when the temperature difference is greater than the second temperature difference, the heat management module drives the fan to rotate; The temperature in the energy storage device is continuously measured, and when the temperature difference between the temperature in the energy storage device and the temperature in the external environment is within the difference range of the first temperature difference and the second temperature difference, the heat management module closes the fan in the rotating state, and keeps the temperature at the preset working temperature.

4. The energy saving energy storage device cooling system of claim 1, wherein, Further comprising: Monitoring the fire extinguishing device, the alarm and the fire extinguishing device: The monitoring fire extinguishing device is connected with the alarm and the battery temperature sensor, and simultaneously monitors the use of the energy storage device and the battery; The first temperature threshold and the second temperature threshold are set, and the second temperature threshold is higher than the first temperature threshold; When the battery temperature sensor senses that the battery temperature reaches the first temperature threshold, the monitoring fire extinguishing device drives the alarm to issue an alarm; when the battery temperature sensor senses that the battery temperature reaches the second threshold, the power supply is immediately cut off, the fire extinguishing device is driven to extinguish the fire at the same time of issuing the alarm, and the monitoring fire extinguishing device records the fire extinguishing event.

5. The energy saving energy storage device cooling system of claim 4, wherein, The driving of the fire extinguishing device to extinguish the fire includes: The cooling injection device and the pressure relief port are installed in the fire extinguishing device; The cooling injection device is used to spray cooling liquid to the battery when the battery temperature is too high to physically cool the working battery; The cooling injection device is connected with the pressure relief port on one side, and since a large amount of pressure is generated when the cooling liquid sprays, the pressure relief port discharges the pressure generated by the cooling injection device to the outside; The cooling injection device is connected with the battery temperature sensor, and when the battery temperature sensor senses that the current battery temperature is within the battery temperature working range, the cooling injection device is closed.

6. An energy saving method of an energy saving energy storage device cooling system, characterized by, It includes: S100: sensing the actual temperature of the current environment, generating a temperature signal from the data in the actual temperature, and setting the preset working temperature of the energy storage device; S200: obtaining the temperature signal and cooling the energy storage device using the blowing mode to make the energy storage device operate at the preset working temperature; S300: installing an adjustable angle guide plate at the bottom of the energy storage device for distributing the hot air flow generated by the energy storage device; S400: sensing the battery temperature generated by the battery in the working state of the energy storage device; S500: obtaining the sensed battery temperature and controlling the distance between the batteries according to the battery temperature: S600: installing an adjustable battery air inlet in the energy storage device, adjusting the length of the battery air inlet according to the battery temperature, and making the battery heat within the preset battery working temperature range; The S300 comprises: The height of the adjustable baffle is set as a first adjusting height and a second adjusting height, and the adjustable baffle is located at the first adjusting height when the energy storage device is not running; The first adjusting height is higher than the second adjusting height, and the hot air flow discharged at the second adjusting height is more than that at the first adjusting height; When the temperature in the energy storage device is higher than the preset working temperature, the energy storage device drives the adjustable baffle to move from the first height to the second adjusting height slowly; When the temperature in the energy storage device drops to the preset working temperature, the adjustable baffle is adjusted back to the first adjusting height, so that the temperature in the energy storage device works in a constant temperature state; The S500 comprises: The battery in the energy storage device is placed in a battery mover, the battery mover is grid-shaped, and the distance between the grids changes continuously as the temperature of the battery rises; The working temperature range of the battery is set as between the highest bearing temperature and the lowest bearing temperature, and the temperature of the battery between the highest bearing temperature and the lowest bearing temperature changes according to the movement of the battery mover and the battery air inlet; The battery mover is connected with a battery temperature sensor, the battery is in a continuous heating state when it supplies power to the energy storage device, the battery temperature sensor senses the temperature of the battery, and determines whether the battery mover needs to be operated, if yes, the battery air inlet is opened until the temperature of the battery drops to the working temperature range of the battery; wherein, when determining whether the battery mover needs to be operated, the internal parameters of the battery are calculated according to the heat production and heat transfer processes in the working process of the battery by the following formula, so as to reflect the state and degree of the chemical reaction in the battery by calculating the internal parameters of the battery, which is conducive to obtaining the working condition of the battery and making corresponding cooling measures: wherein, during the heat generation process, is the working current of the battery, is the total overpotential of the battery, is the irreversible heat, is the battery temperature, is the open-circuit voltage of the battery, is the entropy change coefficient, taking a value of 0.22 mv / k, and Q is the total heat generated by the battery, is the volume of the battery, is the terminal voltage of the battery, is the heat generation power per unit volume of the battery; during the heat transfer process, the battery includes heat conduction and heat convection, and p is the average density of the battery, is the specific heat capacity of the battery at constant voltage, is the thermal conductivity of the battery, is the heat generation power per unit volume of the battery pole, is the volume of the battery pole, is the heat value generated by the heat conduction of the battery, and h is the convective heat transfer coefficient, is the temperature of the ambient cooling fluid, is the temperature of the surface of the battery, and q is the heat flux density generated during the heat convection process.

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