CN114335811A - Energy storage container battery cooling system - Google Patents
Energy storage container battery cooling system Download PDFInfo
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- CN114335811A CN114335811A CN202210205778.0A CN202210205778A CN114335811A CN 114335811 A CN114335811 A CN 114335811A CN 202210205778 A CN202210205778 A CN 202210205778A CN 114335811 A CN114335811 A CN 114335811A
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Abstract
The invention relates to a battery heat dissipation system of an energy storage container, which relates to the technical field of heat dissipation of energy storage batteries and comprises an energy storage container body, wherein a first heat dissipation mechanism, a second heat dissipation mechanism, a detection mechanism and a control module are arranged on the energy storage container body, the temperature of each temperature sensor of the detection mechanism is obtained by arranging the double heat dissipation mechanisms, the detection mechanism and the control module, the temperature of each temperature sensor of the detection mechanism is obtained in the control module, an early warning value of the temperature in the energy storage container is determined by a determination unit, the actual temperature and the early warning value are compared by a comparison unit to determine whether the temperature in the energy storage container is qualified or not, when the temperature is judged to be unqualified, the rotating speed of a first fan set of the second heat dissipation mechanism is further determined according to the gas flow speed in the energy storage container to reach the standard, and when the rotating speed of the first fan set is regulated, the control precision of the heat dissipation system is improved, further ensuring the stable operation of the energy storage battery and prolonging the service life of the energy storage battery.
Description
Technical Field
The invention relates to the technical field of energy storage battery heat dissipation, in particular to a heat dissipation system for a battery of an energy storage container.
Background
In the analysis of energy storage processes, the part of the object or spatial extent drawn for the purpose of determining the object under investigation is referred to as an energy storage system, which comprises energy and substance input and output, energy conversion and storage devices.
The energy storage system usually involves multiple energies, multiple devices, multiple substances and multiple processes, is a complex energy system changing along with time, needs multiple indexes to describe the performance of the energy storage system, and therefore needs to use a boxed energy storage device.
One of the existing energy storage systems is to install an energy storage battery in a container to enable the energy storage system to achieve the purpose of movement, so that the application environment of the existing energy storage system is richer, the existing container enables the energy storage system to mostly adopt a lithium battery for energy storage, the lithium battery has a self-heating phenomenon during working, the lithium battery is very unfavorable for working in a high-temperature environment, and the self-heating cannot guarantee self long-acting work under the condition of bottom-handed temperature.
The existing heat dissipation system based on the energy storage container cannot accurately control the heat dissipation system according to the actual environment so as to ensure the stable operation of the energy storage container in the high-temperature environment.
Disclosure of Invention
Therefore, the invention provides a battery cooling system for an energy storage container, which is used for solving the problem that the cooling system cannot be accurately controlled according to the actual environment in the prior art so as to ensure the stable operation of the energy storage container in a high-temperature environment.
In order to achieve the purpose, the invention provides a battery heat dissipation system of an energy storage container, which comprises an energy storage container body and is characterized in that a first heat dissipation mechanism, a second heat dissipation mechanism, a detection mechanism and a control module are arranged on the energy storage container body;
the first heat dissipation mechanism comprises a condenser, a cooling water pipe and a water pump, wherein the condenser is arranged at the upper part of the side door of the energy storage container and used for providing cooling water for the battery pack in the energy storage container, the cooling water pipe is arranged on the battery rack in a surrounding mode, and the water pump is arranged at a cooling water outlet of the condenser;
the second heat dissipation mechanism comprises a first fan set arranged at the upper part of the energy storage container body and used for discharging heat generated by the battery out of the energy storage container, and a second fan set arranged at the lower part of the side door of the energy storage container and used for sending fresh air outside the energy storage container into the energy storage container;
the detection mechanism comprises a first temperature sensor arranged at a water inlet of the condenser, a fourth temperature sensor arranged at a water outlet of the condenser, a second temperature sensor arranged on the battery rack and used for detecting the internal temperature of the energy storage container, and a third temperature sensor arranged on the outer side of the energy storage container body;
the control module is arranged on a control mechanism of the energy storage container, is connected with the first temperature sensor, the second temperature sensor, the third temperature sensor, the water pump, the first fan set and the second fan set, and comprises an acquisition unit for acquiring detection data of the detection mechanism, a determination unit for determining heat dissipation parameters of the first heat dissipation mechanism and the second heat dissipation mechanism, a comparison unit for performing heat dissipation parameter comparison, and an adjustment unit for adjusting the heat dissipation parameters;
the determining unit determines an early warning value of the temperature in the energy storage container according to the number of the started energy storage battery packs acquired by the acquiring unit when the energy storage container supplies power to external equipment, the comparing unit is used for determining whether the temperature in the energy storage container is qualified or not according to the temperature of the second temperature sensor and a comparison result of the early warning value when the early warning value is determined to be completed, and further determining whether the rotating speed of the first fan group reaches the standard or not according to a comparison result of the gas flow rate at the air outlet of the first fan group of the energy storage container and a preset gas flow rate, and the adjusting unit is used for adjusting the rotating speed of the fan when the comparing unit determines that the temperature is unqualified and the rotating speed of the first fan group does not reach the standard.
Further, the obtaining unit is used for obtaining the group number Z of the energy storage battery packs started by the control mechanism when the energy storage container supplies power to external equipment, the determining unit determines the early warning value of the temperature in the energy storage container according to the group number Z,
wherein the determining unit is provided with a first preset group number Z1, a second preset group number Z2, a third preset group number Z3, a first early warning value Ty1, a second early warning value Ty2 and a third early warning value Ty3, wherein Z1 < Z2 < Z3, Ty1 < Ty2 < Ty3,
when Z is less than or equal to Z1, the determining unit sets the early warning value of the temperature in the energy storage container to be a first early warning value Ty 1;
when Z1 is larger than or equal to Z2, the determining unit sets the early warning value of the temperature in the energy storage container to be a second early warning value Ty 2;
when Z2 is larger than Z and smaller than or equal to Z3, the determining unit sets the early warning value of the temperature in the energy storage container to be a third early warning value Ty 3.
Further, the obtaining unit is further configured to obtain a temperature Tb detected by the second temperature sensor when the early warning value of the energy storage container is determined to be completed, the comparing unit compares the temperature Tb with the ith early warning value Tyi, the determining unit determines whether the temperature of the energy storage container is qualified according to the comparison result, i =1, 2, 3 is set,
if Tb is less than or equal to Tyi, the determining unit determines that the temperature in the energy storage container is qualified;
if Tb > Tyi, the determining unit determines that the temperature in the energy storage container is not qualified.
Further, the detection mechanism further comprises a gas flow velocity detector arranged at an air outlet of a first fan set in the energy storage container, the control module is further connected with the gas flow velocity detector, and when the determination unit determines that the temperature in the energy storage container is unqualified, the control module obtains the gas flow velocity V at the air outlet detected by the gas flow velocity detector, and determines whether the rotating speed of the first fan set reaches the standard or not according to the comparison result of the gas flow velocity V and the preset gas flow velocity V0i,
if V is larger than or equal to V0i, the determining unit judges that the rotating speed of the first fan set reaches the standard;
if V < V0i, the determining unit determines that the rotation speed of the first fan set does not reach the standard.
Further, the determining unit is further configured to calculate a temperature difference Tb between the temperature Tb detected by the second temperature sensor and the early warning value Tyi when it is determined that the rotation speed of the first fan group is not reached, set Δ Tb = Tb-Tyi, the adjusting unit selects a corresponding adjusting coefficient to adjust the rotation speed of the first fan group according to a comparison result of the temperature difference and a preset temperature difference,
wherein the adjusting unit is further provided with a first preset temperature difference Tb1, a second preset temperature difference Tb2, a third preset temperature difference Tb3, a first speed adjustment coefficient Kv1, a second speed adjustment coefficient Kv2 and a third speed adjustment coefficient Kv3, wherein the Δ Tb1 <. Tb2 <. Tb3, 1 < Kv1 < Kv2 < Kv3 < 1.5,
when the Tb is less than or equal to Tb1, the adjusting unit selects a first speed adjusting coefficient Kv1 to adjust the rotating speed of the first fan group;
when the Δ Tb1 is less than or equal to the Δ Tb2, the adjusting unit selects a second rotating speed adjusting coefficient Kv2 to adjust the rotating speed of the first fan group;
when the Δ Tb2 is less than or equal to the Δ Tb3, the adjusting unit selects a third rotating speed adjusting coefficient Kv3 to adjust the rotating speed of the first fan group;
when the j-th rotating speed adjusting coefficient Kvj is selected to adjust the rotating speed of the first fan group, the adjusting unit sets j =1, 2 and 3, sets the adjusted rotating speed of the first fan group as Wb, and sets Wb = Wa × Kvj, wherein Wa is the initial rotating speed of the first fan group.
Further, the determining unit is further configured to determine the starting power of the water pump according to a comparison result of the temperature difference Δ Tb and a preset temperature difference when determining that the rotation speed of the first fan set reaches a standard, wherein the determining unit is further provided with a first starting power P1, a second starting power P2 and a third starting power P3, wherein P1 < P2 < P3,
when the Δ Tb is less than or equal to the Tb1, the determining unit controls the water pump to start at the first starting power P1;
when the Δ Tb1 is less than or equal to the Δ Tb2, the determining unit controls the water pump to start at a second starting power P2;
when the Δ Tb2 is less than or equal to the Δ Tb3, the determining unit controls the water pump to start at a third starting power P3.
Further, the obtaining unit is further configured to obtain an external temperature Tc of the energy storage container detected by a third temperature sensor when the water pump is started, the comparing unit compares the external temperature Tc with the early warning value Tyi of the energy storage container,
if Tc is more than Tyi, the comparison unit judges that the external temperature is high and needs to adjust the power of the water pump;
if Tc is less than or equal to Tyi, the comparison unit judges that the external temperature is qualified.
Further, the comparing unit is used for calculating an inside-outside temperature difference Tc between the outside temperature Tc and the early warning value Tyi when the power of the water pump needs to be adjusted, the adjusting unit selects a corresponding adjusting coefficient according to a comparison result of the inside-outside temperature difference and a preset inside-outside temperature difference to adjust the power of the water pump,
wherein the adjusting unit is further provided with a first preset inner and outer temperature difference Tc1, a second preset inner and outer temperature difference Tc2, a third preset inner and outer temperature difference Tc3, a first power regulating coefficient Kp1, a second power regulating coefficient Kp2 and a third power regulating coefficient Kp3, wherein the Δ Tc1 less than Δ Tc2 less than Δ Tc3, 1 < Kp1 < Kp3 < 1.5,
when the Δ Tc is less than or equal to Tc1, the adjusting unit selects a first power adjusting coefficient Kp1 to adjust the power of the water pump;
when the Δ Tc1 is less than or equal to Tc2, the adjusting unit selects a second power adjusting coefficient Kp2 to adjust the power of the water pump;
when the Δ Tc2 is less than or equal to Tc1, the adjusting unit selects a third power adjusting coefficient Kp3 to adjust the power of the water pump;
when the adjusting unit selects the nth power adjusting coefficient Kpn to adjust the power of the water pump, setting n =1, 2, 3, setting the adjusted power of the water pump as Pk, and setting Pk = Pe × Kpn, where Pe is the e-th starting power and e =1, 2, 3.
Further, the obtaining unit is further configured to obtain a heat dissipation efficiency Q in the energy storage container when the water pump power is determined and/or adjusted, the comparing unit compares the heat dissipation efficiency Q with a preset heat dissipation efficiency Q0, and determines whether to correct the water pump power according to a comparison result,
if Q is less than Q0, the comparison unit judges that the heat dissipation efficiency is low, and corrects the power of the water pump;
if Q is larger than or equal to Q0, the comparison unit judges that the heat dissipation efficiency is normal and does not correct the power of the water pump.
Further, the comparison unit is further configured to obtain a water temperature difference C between the first temperature sensor and the fourth temperature sensor when the heat dissipation efficiency is determined to be low and the power of the water pump is corrected, and determine whether the cooling efficiency of the condenser reaches the standard according to a comparison result between the water temperature difference C and a preset water temperature difference C0,
if C is less than C0, the comparison unit judges that the cooling efficiency of the condenser does not reach the standard, and the adjustment unit adjusts and increases the compressor power of the condenser;
if C is more than or equal to C0, the comparison unit judges that the cooling efficiency of the condenser reaches the standard, calculates the heat dissipation efficiency difference Q between the heat dissipation efficiency Q and the preset heat dissipation efficiency Q0, sets Q = Q0-Q, the adjustment unit selects a corresponding correction coefficient to correct the power of the water pump according to the comparison result of the heat dissipation efficiency difference and the preset heat dissipation efficiency difference,
wherein the adjusting unit is further provided with a first preset radiating efficiency difference Q1, a second preset radiating efficiency difference Q2, a third preset radiating efficiency difference Q3, a first power correction coefficient X1, a second power correction coefficient K2 and a third power correction coefficient K3, wherein Q1 is less than Q2 less than Q3, 1 < X1 < X2 < X3 < 1.5,
when the Δ Q is less than or equal to Q1, the adjusting unit selects a first power correction coefficient X1 to correct the power of the water pump;
when the Δ Q1 is less than or equal to Q2, the adjusting unit selects a second power correction coefficient X2 to correct the power of the water pump;
when the Δ Q2 is less than or equal to Q3, the adjusting unit selects a third power correction coefficient X3 to correct the power of the water pump;
the adjusting unit is further configured to set e =1, 2, 3 when the power correction coefficient Xr is selected to correct the water pump power, set the corrected water pump power to Px, and set Px = Pr × Xr and/or Px = Pk × Xr. .
Compared with the prior art, the energy storage container temperature control system has the advantages that the double heat dissipation mechanisms, the detection mechanism and the control module are arranged, the temperature of each temperature sensor of the detection mechanism is obtained through the arrangement in the control module, the early warning value of the temperature in the energy storage container is determined through the determination unit, whether the temperature in the energy storage container is qualified or not is determined through the comparison of the actual temperature and the early warning value through the comparison unit, when the judgment is unqualified, whether the rotating speed of the first fan set of the second heat dissipation mechanism reaches the standard or not is further determined according to the gas flow rate in the energy storage container, and when the judgment is not met, the rotating speed of the first fan set is adjusted, so that the control precision of the heat dissipation system is improved, the stable operation of the energy storage battery is further ensured, and the service life of the energy storage battery is prolonged.
Particularly, the invention sets a plurality of preset groups and early warning values in the determining unit, determines the early warning value of the temperature in the energy storage container according to the comparison result of the groups of the energy storage battery pack which is actually started in the energy storage container and the preset groups, obtains the actual temperature in the energy storage container through the obtaining unit, compares the actual temperature with the early warning value, determines whether the temperature in the energy storage container is qualified according to the comparison result, and determines whether the rotating speed of the first fan group reaches the standard, thereby further improving the control precision of the heat dissipation system, further ensuring the stable operation of the energy storage battery, and prolonging the service life of the energy storage battery.
Furthermore, the adjusting unit is provided with a plurality of preset temperature difference values and rotation speed adjusting coefficients, when the rotation speed is judged not to reach the standard, the difference value between the temperature detected by the second temperature sensor and the early warning value is calculated, and the corresponding rotation speed adjusting coefficient is selected according to the comparison result of the temperature difference value and the preset temperature difference values to adjust the rotation speed of the first fan set, so that the control precision of the heat dissipation system is further improved, the stable operation of the energy storage battery is further ensured, and the service life of the energy storage battery is prolonged.
Furthermore, the plurality of starting powers are arranged on the determining unit, and the starting power of the water pump is determined according to the comparison result of the temperature difference value between the temperature detected by the second temperature sensor and the preset temperature difference value, so that the control precision of the heat dissipation system is further improved, the stable operation of the energy storage battery is further ensured, and the service life of the energy storage battery is prolonged.
Furthermore, when the starting power of the water pump is set and the water pump is started, the comparison unit determines whether the external temperature is too high according to the comparison result of the external temperature of the energy storage container and the early warning value, and adjusts the power of the water pump when the external temperature is judged to be too high, so that the control precision of the heat dissipation system is further improved, the stable operation of the energy storage battery is further ensured, and the service life of the energy storage battery is prolonged.
Furthermore, the adjusting unit is provided with a plurality of preset internal and external temperature differences and power adjusting coefficients, and when the water pump power is judged to be adjusted, the corresponding adjusting coefficient is selected to adjust the water pump power according to the comparison result of the actual internal and external temperature differences and the preset internal and external temperature differences, so that the control precision of the heat dissipation system is further improved, the stable operation of the energy storage battery is further ensured, and the service life of the energy storage battery is prolonged.
Further, in the technical scheme of the invention, when the power of the water pump is corrected, the heat dissipation efficiency of the first heat dissipation mechanism and the second heat dissipation mechanism on the energy storage container is calculated by obtaining the temperature drop amount within the preset time length in the energy storage container, whether the heat dissipation efficiency reaches the standard is determined according to the comparison result of the heat dissipation efficiency and the preset heat dissipation efficiency set in the comparison unit, and the power of the water pump of the condenser is adjusted when the heat dissipation efficiency does not reach the standard, so that the control precision of the heat dissipation system is further improved, the stable operation of the energy storage battery is further ensured, and the service life of the energy storage battery is prolonged.
Furthermore, when the power of the water pump is judged to be corrected, the difference value of the first temperature sensor and the fourth temperature sensor is obtained, the power of the condenser compressor is further determined to be adjusted or the power of the water pump is further corrected according to the comparison result of the water temperature difference value and the preset water temperature difference value, and when the power of the water pump is further judged to be corrected, the power of the water pump is corrected by setting a plurality of preset heat dissipation efficiency difference values and power correction coefficients in the adjusting unit and selecting the corresponding power correction coefficient according to the comparison result of the heat dissipation efficiency difference values and the preset heat dissipation efficiency difference values, so that the control precision of a heat dissipation system is further improved, the stable operation of the energy storage battery is further ensured, and the service life of the energy storage battery is prolonged.
Drawings
Fig. 1 is a schematic view of the overall structure of a battery cooling system of an energy storage container according to the present invention;
FIG. 2 is a schematic diagram of the internal structure of the battery cooling system of the energy storage container according to the present invention;
fig. 3 is another schematic internal structure diagram of the battery cooling system of the energy storage container according to the present invention;
fig. 4 is a logic block diagram of a control module of the battery cooling system of the energy storage container according to the present invention.
Detailed Description
In order that the objects and advantages of the invention will be more clearly understood, the invention is further described below with reference to examples; it should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and do not limit the scope of the present invention.
It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Referring to fig. 1-4, fig. 1 is a schematic diagram of an overall structure of a battery cooling system of an energy storage container according to the present invention, fig. 2 is a schematic diagram of an internal structure of the battery cooling system of the energy storage container according to the present invention, fig. 3 is a schematic diagram of another internal structure of the battery cooling system of the energy storage container according to the present invention, and fig. 4 is a logic block diagram of a control module of the battery cooling system of the energy storage container according to the present invention.
The battery cooling system of the energy storage container comprises an energy storage container body 1, wherein a first cooling mechanism 2, a second cooling mechanism 3, a detection mechanism and a control module (not shown in the figure) are arranged on the energy storage container body 1;
the first heat dissipation mechanism 2 comprises a condenser 21 arranged at the upper part of the side door of the energy storage container and used for providing cooling water for the battery pack 4 in the energy storage container, a cooling water pipe 23 arranged on the battery rack 7 in a surrounding way, and a water pump 22 arranged at a cooling water outlet of the condenser 21;
the second heat dissipation mechanism 3 comprises a first fan set 31 arranged at the upper part of the energy storage container body 1 and used for discharging heat generated by the battery out of the energy storage container, and a second fan set 32 arranged at the lower part of the side door of the energy storage container and used for sending fresh air outside the energy storage container into the energy storage container;
the detection mechanism comprises a first temperature sensor (not shown in the figure) arranged at the water inlet of the condenser 21, a fourth temperature sensor (not shown in the figure) arranged at the water outlet of the condenser 21, a second temperature sensor 61 arranged on the battery rack 7 and used for detecting the internal temperature of the energy storage container, and a third temperature sensor 62 arranged outside the energy storage container body 1;
the control module (not shown in the figure) is arranged on the control mechanism 5 of the energy storage container and connected with the first temperature sensor (not shown in the figure), the second temperature sensor 61, the third temperature sensor 62, the water pump 22, the first fan set 31 and the second fan set 32, and comprises an acquisition unit for acquiring detection data of the detection mechanism, a determination unit for determining heat dissipation parameters of the first heat dissipation mechanism 2 and the second heat dissipation mechanism 3, a comparison unit for performing heat dissipation parameter comparison, and an adjustment unit for adjusting the heat dissipation parameters;
specifically, the determining unit determines an early warning value of the temperature in the energy storage container according to the number of the started energy storage battery packs 4 acquired by the acquiring unit when the energy storage container supplies power to external equipment, the comparing unit is configured to determine whether the temperature in the energy storage container is qualified according to the temperature of the second temperature sensor 61 and a comparison result of the early warning value when the early warning value is determined to be completed, and further determine whether the rotating speed of the first fan group 31 reaches the standard according to a comparison result of the gas flow rate at the air outlet of the first fan group 31 of the energy storage container and a preset gas flow rate, and the adjusting unit is configured to adjust the rotating speed of the fan when the comparing unit determines that the temperature is unqualified and the rotating speed of the first fan group 31 does not reach the standard.
Specifically, the obtaining unit is configured to obtain the number Z of energy storage battery packs started by the control mechanism when the energy storage container supplies power to an external device, the determining unit determines the early warning value of the temperature in the energy storage container according to the number Z,
wherein the determining unit is provided with a first preset group number Z1, a second preset group number Z2, a third preset group number Z3, a first early warning value Ty1, a second early warning value Ty2 and a third early warning value Ty3, wherein Z1 < Z2 < Z3, Ty1 < Ty2 < Ty3,
when Z is less than or equal to Z1, the determining unit sets the early warning value of the temperature in the energy storage container to be a first early warning value Ty 1;
when Z1 is larger than or equal to Z2, the determining unit sets the early warning value of the temperature in the energy storage container to be a second early warning value Ty 2;
when Z2 is larger than Z and smaller than or equal to Z3, the determining unit sets the early warning value of the temperature in the energy storage container to be a third early warning value Ty 3.
Specifically, the obtaining unit is further configured to obtain a temperature Tb detected by the second temperature sensor when the early warning value of the energy storage container is determined to be completed, the comparing unit compares the temperature Tb with the ith early warning value Tyi, the determining unit determines whether the temperature of the energy storage container is qualified according to the comparison result, i =1, 2, 3 is set,
if Tb is less than or equal to Tyi, the determining unit determines that the temperature in the energy storage container is qualified;
if Tb > Tyi, the determining unit determines that the temperature in the energy storage container is not qualified.
Specifically, the detection mechanism further comprises a gas flow velocity detector 63 arranged at an air outlet of a first fan set in the energy storage container, the control module is further connected with the gas flow velocity detector, and when the determination unit determines that the temperature in the energy storage container is not qualified, the control module obtains a gas flow velocity V at the air outlet detected by the gas flow velocity detector, and determines whether the rotating speed of the first fan set reaches the standard according to a comparison result of the gas flow velocity V and a preset gas flow velocity V0i,
if V is larger than or equal to V0i, the determining unit judges that the rotating speed of the first fan set reaches the standard;
if V < V0i, the determining unit determines that the rotation speed of the first fan set does not reach the standard.
Specifically, the determining unit is further configured to calculate a temperature difference Tb between the temperature Tb detected by the second temperature sensor and the early warning value Tyi when the determination unit determines that the rotation speed of the first fan group is not reached, set Δ Tb = Tb-Tyi, the adjusting unit selects a corresponding adjusting coefficient to adjust the rotation speed of the first fan group according to a comparison result between the temperature difference and a preset temperature difference,
wherein the adjusting unit is further provided with a first preset temperature difference Tb1, a second preset temperature difference Tb2, a third preset temperature difference Tb3, a first speed adjustment coefficient Kv1, a second speed adjustment coefficient Kv2 and a third speed adjustment coefficient Kv3, wherein the Δ Tb1 <. Tb2 <. Tb3, 1 < Kv1 < Kv2 < Kv3 < 1.5,
when the Tb is less than or equal to Tb1, the adjusting unit selects a first speed adjusting coefficient Kv1 to adjust the rotating speed of the first fan group;
when the Δ Tb1 is less than or equal to the Δ Tb2, the adjusting unit selects a second rotating speed adjusting coefficient Kv2 to adjust the rotating speed of the first fan group;
when the Δ Tb2 is less than or equal to the Δ Tb3, the adjusting unit selects a third rotating speed adjusting coefficient Kv3 to adjust the rotating speed of the first fan group;
when the j-th rotating speed adjusting coefficient Kvj is selected to adjust the rotating speed of the first fan group, the adjusting unit sets j =1, 2 and 3, sets the adjusted rotating speed of the first fan group as Wb, and sets Wb = Wa × Kvj, wherein Wa is the initial rotating speed of the first fan group.
Specifically, the determining unit is further configured to determine the starting power of the water pump according to a comparison result of the temperature difference Tb and a preset temperature difference when determining that the rotation speed of the first fan group reaches a standard, wherein the determining unit is further provided with a first starting power P1, a second starting power P2 and a third starting power P3, wherein P1 < P2 < P3,
when the Δ Tb is less than or equal to the Tb1, the determining unit controls the water pump to start at the first starting power P1;
when the Δ Tb1 is less than or equal to the Δ Tb2, the determining unit controls the water pump to start at a second starting power P2;
when the Δ Tb2 is less than or equal to the Δ Tb3, the determining unit controls the water pump to start at a third starting power P3.
Specifically, the obtaining unit is further configured to obtain an external temperature Tc of the energy storage container detected by a third temperature sensor when the water pump is started, the comparing unit compares the external temperature Tc with an early warning value Tyi of the energy storage container,
if Tc is more than Tyi, the comparison unit judges that the external temperature is high and needs to adjust the power of the water pump;
if Tc is less than or equal to Tyi, the comparison unit judges that the external temperature is qualified.
Specifically, the comparing unit is used for calculating an inside-outside temperature difference Tc between the outside temperature Tc and the early warning value Tyi when the power of the water pump needs to be adjusted, the adjusting unit selects a corresponding adjusting coefficient to adjust the power of the water pump according to a comparison result between the inside-outside temperature difference and a preset inside-outside temperature difference,
wherein the adjusting unit is further provided with a first preset inner and outer temperature difference Tc1, a second preset inner and outer temperature difference Tc2, a third preset inner and outer temperature difference Tc3, a first power regulating coefficient Kp1, a second power regulating coefficient Kp2 and a third power regulating coefficient Kp3, wherein the Δ Tc1 less than Δ Tc2 less than Δ Tc3, 1 < Kp1 < Kp3 < 1.5,
when the Δ Tc is less than or equal to Tc1, the adjusting unit selects a first power adjusting coefficient Kp1 to adjust the power of the water pump;
when the Δ Tc1 is less than or equal to Tc2, the adjusting unit selects a second power adjusting coefficient Kp2 to adjust the power of the water pump;
when the Δ Tc2 is less than or equal to Tc1, the adjusting unit selects a third power adjusting coefficient Kp3 to adjust the power of the water pump;
when the adjusting unit selects the nth power adjusting coefficient Kpn to adjust the power of the water pump, setting n =1, 2, 3, setting the adjusted power of the water pump as Pk, and setting Pk = Pe × Kpn, where Pe is the e-th starting power and e =1, 2, 3.
Specifically, the obtaining unit is further configured to obtain a heat dissipation efficiency Q in the energy storage container when the water pump power is determined and/or adjusted, the comparing unit compares the heat dissipation efficiency Q with a preset heat dissipation efficiency Q0, and determines whether to correct the water pump power according to a comparison result,
if Q is less than Q0, the comparison unit judges that the heat dissipation efficiency is low, and corrects the power of the water pump;
if Q is larger than or equal to Q0, the comparison unit judges that the heat dissipation efficiency is normal and does not correct the power of the water pump.
Specifically, the comparison unit is further configured to obtain a water temperature difference C between the first temperature sensor and the fourth temperature sensor when the heat dissipation efficiency is determined to be low and the power of the water pump is corrected, and determine whether the cooling efficiency of the condenser reaches the standard according to a comparison result between the water temperature difference C and a preset water temperature difference C0,
if C is less than C0, the comparison unit judges that the cooling efficiency of the condenser does not reach the standard, and the adjustment unit adjusts and increases the compressor power of the condenser;
if C is more than or equal to C0, the comparison unit judges that the cooling efficiency of the condenser reaches the standard, calculates the heat dissipation efficiency difference Q between the heat dissipation efficiency Q and the preset heat dissipation efficiency Q0, sets Q = Q0-Q, the adjustment unit selects a corresponding correction coefficient to correct the power of the water pump according to the comparison result of the heat dissipation efficiency difference and the preset heat dissipation efficiency difference,
wherein the adjusting unit is further provided with a first preset radiating efficiency difference Q1, a second preset radiating efficiency difference Q2, a third preset radiating efficiency difference Q3, a first power correction coefficient X1, a second power correction coefficient K2 and a third power correction coefficient K3, wherein Q1 is less than Q2 less than Q3, 1 < X1 < X2 < X3 < 1.5,
when the Δ Q is less than or equal to Q1, the adjusting unit selects a first power correction coefficient X1 to correct the power of the water pump;
when the Δ Q1 is less than or equal to Q2, the adjusting unit selects a second power correction coefficient X2 to correct the power of the water pump;
when the Δ Q2 is less than or equal to Q3, the adjusting unit selects a third power correction coefficient X3 to correct the power of the water pump;
the adjusting unit is further configured to set e =1, 2, 3 when the power correction coefficient Xr is selected to correct the water pump power, set the corrected water pump power to Px, and set Px = Pr × Xr and/or Px = Pk × Xr.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention; various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A battery heat dissipation system of an energy storage container comprises an energy storage container body, and is characterized in that a first heat dissipation mechanism, a second heat dissipation mechanism, a detection mechanism and a control module are arranged on the energy storage container body;
the first heat dissipation mechanism comprises a condenser, a cooling water pipe and a water pump, wherein the condenser is arranged at the upper part of the side door of the energy storage container and used for providing cooling water for the battery pack in the energy storage container, the cooling water pipe is arranged on the battery rack in a surrounding mode, and the water pump is arranged at a cooling water outlet of the condenser;
the second heat dissipation mechanism comprises a first fan set arranged at the upper part of the energy storage container body and used for discharging heat generated by the battery out of the energy storage container, and a second fan set arranged at the lower part of the side door of the energy storage container and used for sending fresh air outside the energy storage container into the energy storage container;
the detection mechanism comprises a first temperature sensor arranged at a water inlet of the condenser, a fourth temperature sensor arranged at a water outlet of the condenser, a second temperature sensor arranged on the battery rack and used for detecting the internal temperature of the energy storage container, and a third temperature sensor arranged on the outer side of the energy storage container body;
the control module is arranged on a control mechanism of the energy storage container, is connected with the first temperature sensor, the second temperature sensor, the third temperature sensor, the water pump, the first fan set and the second fan set, and comprises an acquisition unit for acquiring detection data of the detection mechanism, a determination unit for determining heat dissipation parameters of the first heat dissipation mechanism and the second heat dissipation mechanism, a comparison unit for performing heat dissipation parameter comparison, and an adjustment unit for adjusting the heat dissipation parameters;
the determining unit determines an early warning value of the temperature in the energy storage container according to the number of the started energy storage battery packs acquired by the acquiring unit when the energy storage container supplies power to external equipment, the comparing unit is used for determining whether the temperature in the energy storage container is qualified or not according to the temperature of the second temperature sensor and a comparison result of the early warning value when the early warning value is determined to be completed, and further determining whether the rotating speed of the first fan group reaches the standard or not according to a comparison result of the gas flow rate at the air outlet of the first fan group of the energy storage container and a preset gas flow rate, and the adjusting unit is used for adjusting the rotating speed of the fan when the comparing unit determines that the temperature is unqualified and the rotating speed of the first fan group does not reach the standard.
2. The energy storage container battery cooling system of claim 1, wherein the obtaining unit is configured to obtain a group number Z of energy storage battery packs started by the control mechanism when the energy storage container supplies power to an external device, the determining unit determines an early warning value of a temperature in the energy storage container according to the group number Z,
wherein the determining unit is provided with a first preset group number Z1, a second preset group number Z2, a third preset group number Z3, a first early warning value Ty1, a second early warning value Ty2 and a third early warning value Ty3, wherein Z1 < Z2 < Z3, Ty1 < Ty2 < Ty3,
when Z is less than or equal to Z1, the determining unit sets the early warning value of the temperature in the energy storage container to be a first early warning value Ty 1;
when Z1 is larger than or equal to Z2, the determining unit sets the early warning value of the temperature in the energy storage container to be a second early warning value Ty 2;
when Z2 is larger than Z and smaller than or equal to Z3, the determining unit sets the early warning value of the temperature in the energy storage container to be a third early warning value Ty 3.
3. The system for dissipating heat from a battery of an energy storage container according to claim 2, wherein the obtaining unit is further configured to obtain a temperature Tb detected by the second temperature sensor when determining that the warning value of the energy storage container is completed, the comparing unit compares the temperature Tb with the ith warning value Tyi, the determining unit determines whether the temperature of the energy storage container is qualified according to the comparison result, and sets i =1, 2, 3,
if Tb is less than or equal to Tyi, the determining unit determines that the temperature in the energy storage container is qualified;
if Tb > Tyi, the determining unit determines that the temperature in the energy storage container is not qualified.
4. The battery cooling system for energy storage containers according to claim 3, wherein the detection mechanism further includes a gas flow velocity detector disposed at the air outlet of the first fan set in the energy storage container, the control module is further connected to the gas flow velocity detector, and when the determination unit determines that the temperature in the energy storage container is not qualified, the control module obtains the gas flow velocity V at the air outlet detected by the gas flow velocity detector, and determines whether the rotation speed of the first fan set reaches the standard according to the comparison result between the gas flow velocity V and a preset gas flow velocity V0i,
if V is larger than or equal to V0i, the determining unit judges that the rotating speed of the first fan set reaches the standard;
if V < V0i, the determining unit determines that the rotation speed of the first fan set does not reach the standard.
5. The battery cooling system of claim 4, wherein the determining unit is further configured to calculate a temperature difference Δ Tb between the temperature Tb detected by the second temperature sensor and the pre-warning value Tyi when the rotation speed of the first fan set is determined not to be reached, set Δ Tb = Tb-Tyi, the adjusting unit selects a corresponding adjustment coefficient to adjust the rotation speed of the first fan set according to a comparison result between the temperature difference and a preset temperature difference,
wherein the adjusting unit is further provided with a first preset temperature difference Tb1, a second preset temperature difference Tb2, a third preset temperature difference Tb3, a first speed adjustment coefficient Kv1, a second speed adjustment coefficient Kv2 and a third speed adjustment coefficient Kv3, wherein the Δ Tb1 <. Tb2 <. Tb3, 1 < Kv1 < Kv2 < Kv3 < 1.5,
when the Tb is less than or equal to Tb1, the adjusting unit selects a first speed adjusting coefficient Kv1 to adjust the rotating speed of the first fan group;
when the Δ Tb1 is less than or equal to the Δ Tb2, the adjusting unit selects a second rotating speed adjusting coefficient Kv2 to adjust the rotating speed of the first fan group;
when the Δ Tb2 is less than or equal to the Δ Tb3, the adjusting unit selects a third rotating speed adjusting coefficient Kv3 to adjust the rotating speed of the first fan group;
when the j-th rotating speed adjusting coefficient Kvj is selected to adjust the rotating speed of the first fan group, the adjusting unit sets j =1, 2 and 3, sets the adjusted rotating speed of the first fan group as Wb, and sets Wb = Wa × Kvj, wherein Wa is the initial rotating speed of the first fan group.
6. The battery cooling system of claim 5, wherein the determining unit is further configured to determine the starting power of the water pump according to the comparison result of the temperature difference Δ Tb and a preset temperature difference when determining that the rotation speed of the first fan set reaches a target, wherein the determining unit is further provided with a first starting power P1, a second starting power P2 and a third starting power P3, wherein P1 < P2 < P3,
when the Δ Tb is less than or equal to the Tb1, the determining unit controls the water pump to start at the first starting power P1;
when the Δ Tb1 is less than or equal to the Δ Tb2, the determining unit controls the water pump to start at a second starting power P2;
when the Δ Tb2 is less than or equal to the Δ Tb3, the determining unit controls the water pump to start at a third starting power P3.
7. The battery cooling system for energy storage containers as claimed in claim 6, wherein the obtaining unit is further configured to obtain an external temperature Tc of the energy storage container detected by a third temperature sensor when the water pump is started, the comparing unit compares the external temperature Tc with the warning value Tyi of the energy storage container,
if Tc is more than Tyi, the comparison unit judges that the external temperature is high and needs to adjust the power of the water pump;
if Tc is less than or equal to Tyi, the comparison unit judges that the external temperature is qualified.
8. The battery cooling system of claim 7, wherein the comparing unit is configured to calculate an inside-outside temperature difference Tc between the outside temperature Tc and the pre-warning value Tyi when the power of the water pump needs to be adjusted, the adjusting unit selects a corresponding adjusting coefficient to adjust the power of the water pump according to the comparison result between the inside-outside temperature difference and a preset inside-outside temperature difference,
wherein the adjusting unit is further provided with a first preset inner and outer temperature difference Tc1, a second preset inner and outer temperature difference Tc2, a third preset inner and outer temperature difference Tc3, a first power regulating coefficient Kp1, a second power regulating coefficient Kp2 and a third power regulating coefficient Kp3, wherein the Δ Tc1 less than Δ Tc2 less than Δ Tc3, 1 < Kp1 < Kp3 < 1.5,
when the Δ Tc is less than or equal to Tc1, the adjusting unit selects a first power adjusting coefficient Kp1 to adjust the power of the water pump;
when the Δ Tc1 is less than or equal to Tc2, the adjusting unit selects a second power adjusting coefficient Kp2 to adjust the power of the water pump;
when the Δ Tc2 is less than or equal to Tc1, the adjusting unit selects a third power adjusting coefficient Kp3 to adjust the power of the water pump;
when the adjusting unit selects the nth power adjusting coefficient Kpn to adjust the power of the water pump, setting n =1, 2, 3, setting the adjusted power of the water pump as Pk, and setting Pk = Pe × Kpn, where Pe is the e-th starting power and e =1, 2, 3.
9. The system for dissipating heat from a battery of an energy storage container according to claim 8, wherein the obtaining unit is further configured to obtain a heat dissipation efficiency Q in the energy storage container when determining and/or adjusting the power of the water pump is completed, the comparing unit compares the heat dissipation efficiency Q with a preset heat dissipation efficiency Q0, and determines whether to modify the power of the water pump according to the comparison result,
if Q is less than Q0, the comparison unit judges that the heat dissipation efficiency is low, and corrects the power of the water pump;
if Q is larger than or equal to Q0, the comparison unit judges that the heat dissipation efficiency is normal and does not correct the power of the water pump.
10. The battery cooling system for energy storage container as claimed in claim 8, wherein the comparing unit is further configured to obtain the water temperature difference C between the first temperature sensor and the fourth temperature sensor when the water pump power is corrected when the heat dissipation efficiency is determined to be low, and determine whether the cooling efficiency of the condenser is up to the standard according to the comparison result between the water temperature difference C and the preset water temperature difference C0,
if C is less than C0, the comparison unit judges that the cooling efficiency of the condenser does not reach the standard, and the adjustment unit adjusts and increases the compressor power of the condenser;
if C is more than or equal to C0, the comparison unit judges that the cooling efficiency of the condenser reaches the standard, calculates the heat dissipation efficiency difference Q between the heat dissipation efficiency Q and the preset heat dissipation efficiency Q0, sets Q = Q0-Q, the adjustment unit selects a corresponding correction coefficient to correct the power of the water pump according to the comparison result of the heat dissipation efficiency difference and the preset heat dissipation efficiency difference,
wherein the adjusting unit is further provided with a first preset radiating efficiency difference Q1, a second preset radiating efficiency difference Q2, a third preset radiating efficiency difference Q3, a first power correction coefficient X1, a second power correction coefficient K2 and a third power correction coefficient K3, wherein Q1 is less than Q2 less than Q3, 1 < X1 < X2 < X3 < 1.5,
when the Δ Q is less than or equal to Q1, the adjusting unit selects a first power correction coefficient X1 to correct the power of the water pump;
when the Δ Q1 is less than or equal to Q2, the adjusting unit selects a second power correction coefficient X2 to correct the power of the water pump;
when the Δ Q2 is less than or equal to Q3, the adjusting unit selects a third power correction coefficient X3 to correct the power of the water pump;
the adjusting unit is further configured to set e =1, 2, 3 when the power correction coefficient Xr is selected to correct the water pump power, set the corrected water pump power to Px, and set Px = Pr × Xr and/or Px = Pk × Xr.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210205778.0A CN114335811A (en) | 2022-03-04 | 2022-03-04 | Energy storage container battery cooling system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210205778.0A CN114335811A (en) | 2022-03-04 | 2022-03-04 | Energy storage container battery cooling system |
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| CN114335811A true CN114335811A (en) | 2022-04-12 |
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| CN202210205778.0A Withdrawn CN114335811A (en) | 2022-03-04 | 2022-03-04 | Energy storage container battery cooling system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115752799A (en) * | 2022-10-13 | 2023-03-07 | 国家管网集团北方管道有限责任公司 | Wisdom building site safety precaution device based on thing networking |
| CN117251027A (en) * | 2023-10-11 | 2023-12-19 | 广州市声特优电子有限公司 | Intelligent noise reduction chassis capable of radiating electric appliance and application method thereof |
-
2022
- 2022-03-04 CN CN202210205778.0A patent/CN114335811A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115752799A (en) * | 2022-10-13 | 2023-03-07 | 国家管网集团北方管道有限责任公司 | Wisdom building site safety precaution device based on thing networking |
| CN115752799B (en) * | 2022-10-13 | 2023-08-18 | 国家管网集团北方管道有限责任公司 | Intelligent building site safety precaution device based on thing networking |
| CN117251027A (en) * | 2023-10-11 | 2023-12-19 | 广州市声特优电子有限公司 | Intelligent noise reduction chassis capable of radiating electric appliance and application method thereof |
| CN117251027B (en) * | 2023-10-11 | 2024-03-08 | 广州市声特优电子有限公司 | Intelligent noise reduction chassis capable of radiating electric appliance and application method thereof |
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