Battery pack temperature regulation device and method, energy storage device, controller and storage medium

Abstract

The present disclosure relates to a battery pack temperature regulation device and method, an energy storage device, a controller, and a storage medium. The battery pack temperature regulation device includes: an environment sensing module arranged around the battery pack for detecting the temperature of the battery pack; a heat insulation cover with the battery pack disposed therein; an energy storage and conversion module for generating heat during operation, and an openable portion is provided on a side of the heat insulation cover close to the energy storage and conversion module; a controller connected to the openable portion of the heat insulation cover and the environment sensing module respectively, and configured to control the heat insulation cover to open and control the heat generated by the energy storage and conversion module to heat the battery pack when the temperature of the battery pack is lower than a lower limit of a predetermined operating temperature. The present disclosure can achieve intelligent temperature regulation of a household energy storage device, enable the household energy storage device to be used at low temperatures, raise the temperature of the battery, and improve the battery discharge performance.

Description

Technical Field

[0001] The present disclosure relates to the field of power electronics, and particularly to a battery pack temperature regulation device and method, an energy storage device, a controller, and a storage medium. Background Art

[0002] An energy storage system / device is a device for storing photovoltaic and wind power in a home environment. The battery pack of the energy storage system / device needs to operate within an appropriate temperature range, but the battery pack of the energy storage system / device cannot adapt to areas with large temperature differences throughout the four seasons and high-altitude cold regions. Summary of the Invention

[0003] The inventors have found through research that: as a typical scenario of energy storage applications, in electric vehicles, regarding how to ensure limited temperature management of the battery and realize the performance and lifespan of the battery, the related technical implementation methods mainly include the following: when the battery needs to be heated at low temperatures, natural water circulation heating, heating film heating, battery internal resistance self-heating, etc., and heat preservation and insulation technical solutions; when the battery dissipates heat at high temperatures, the air outlet of the air conditioner cooler dissipates heat, the phase change composite material undergoes phase change in the heat pipe, and the compressor cycle is used to take away heat.

[0004] For a household energy storage device made of energy storage batteries, in special usage scenarios, there are also heating and heat dissipation problems similar to those of electric vehicle batteries, but the related technologies do not have an intelligent temperature control solution for household energy storage devices.

[0005] In view of at least one of the above technical problems, the present disclosure provides a battery pack temperature regulation device and method, an energy storage device, a controller, and a storage medium, which can realize intelligent temperature regulation of household energy storage devices.

[0006] According to one aspect of the present disclosure, there is provided a battery pack temperature regulation device, including:

[0007] An environment perception module, arranged around the battery pack, for detecting the temperature of the battery pack;

[0008] A heat insulation cover, with the battery pack disposed therein;

[0009] An energy storage inverter module, for generating heat during operation, and an openable part is provided on one side of the heat insulation cover close to the energy storage inverter module;

[0010] A controller, respectively connected to the openable part of the heat insulation cover and the environment perception module, for controlling the heat insulation cover to open and using the heat generated by the energy storage inverter module to heat the battery pack when the temperature of the battery pack is lower than the lower limit of the predetermined operating temperature.

[0011] In some embodiments of the present disclosure, the energy storage inverter module and the battery pack are arranged in layers;

[0012] The energy storage and current conversion module layer is arranged below the battery pack layer, and the heat insulation cover and the battery pack form the battery pack layer;

[0013] A controller, configured to control the heat insulation cover to open and the heat generated by the energy storage and current conversion module to rise upward for heating the battery pack when the temperature of the battery pack is lower than the lower limit of the predetermined operating temperature.

[0014] In some embodiments of the present disclosure, the battery pack temperature control device further includes:

[0015] A motor, respectively connected to the controller and the openable part of the heat insulation cover, and configured to drive the openable part to open or close according to the instruction of the controller.

[0016] In some embodiments of the present disclosure, the battery pack temperature control device further includes:

[0017] A fan, arranged below the energy storage and current conversion module;

[0018] A controller, configured to control the fan to turn on and discharge the heat generated by the energy storage and current conversion module to the outside when the temperature of the battery pack is greater than or equal to a first predetermined threshold, wherein the first predetermined threshold is greater than the lower limit of the predetermined operating temperature.

[0019] In some embodiments of the present disclosure, the battery pack temperature control device further includes:

[0020] A ventilation opening, arranged below the fan;

[0021] A controller, configured to control the fan to turn on and discharge the heat generated by the energy storage and current conversion module to the outside through the ventilation opening when the temperature of the battery pack is greater than or equal to a first predetermined threshold.

[0022] In some embodiments of the present disclosure, the motor is connected to the fan;

[0023] A controller, configured to control the motor to drive the fan to turn on and discharge the heat generated by the energy storage and current conversion module to the outside through the ventilation opening when the temperature of the battery pack is greater than or equal to a first predetermined threshold.

[0024] In some embodiments of the present disclosure, the battery pack temperature control device includes a plurality of fans and a plurality of energy storage and current conversion modules, wherein each fan is arranged below one energy storage and current conversion module.

[0025] In some embodiments of the present disclosure, a controller, configured to close the heat insulation cover to keep the battery warm by controlling the motor when the temperature of the battery pack is greater than or equal to a second predetermined threshold and less than the first predetermined threshold, wherein the second predetermined threshold is less than the first predetermined threshold and greater than the lower limit of the predetermined operating temperature.

[0026] In some embodiments of the present disclosure, the energy storage converter module is at least one of an inductor, a capacitor, a high-frequency switching tube device, an inductive reactance device, and an impedance device.

[0027] In some embodiments of the present disclosure, during the process of the battery discharging externally or an external energy source charging the battery pack, current passes through the energy storage converter module, and the energy storage converter module generates heat.

[0028] According to another aspect of the present disclosure, there is provided an energy storage device, including a battery pack and the battery pack temperature regulation device as described in any of the above embodiments.

[0029] According to another aspect of the present disclosure, there is provided a method for regulating the temperature of a battery pack, including:

[0030] Obtaining the temperature of the battery pack collected by the environment perception module, wherein the environment perception module is arranged around the battery pack;

[0031] When the temperature of the battery pack is less than the lower limit of the predetermined operating temperature, controlling the heat insulation cover to open, and controlling the heat generated by the energy storage converter module to heat the battery pack, wherein the battery pack is arranged in the heat insulation cover, the energy storage converter module generates heat during operation, and an openable part is provided on the side of the heat insulation cover close to the energy storage converter module.

[0032] In some embodiments of the present disclosure, the method for regulating the temperature of the battery pack further includes:

[0033] When the temperature of the battery pack is greater than or equal to the first predetermined threshold, controlling the fan to turn on to discharge the heat generated by the energy storage converter module externally, wherein the first predetermined threshold is greater than the lower limit of the predetermined operating temperature, and the fan is arranged below the energy storage converter module.

[0034] In some embodiments of the present disclosure, the method for regulating the temperature of the battery pack further includes:

[0035] When the temperature of the battery pack is greater than or equal to the second predetermined threshold and less than the first predetermined threshold, controlling the motor to close the heat insulation cover to keep the battery warm, wherein the second predetermined threshold is less than the first predetermined threshold, and the second predetermined threshold is greater than the lower limit of the predetermined operating temperature.

[0036] In some embodiments of the present disclosure, the method for regulating the temperature of the battery pack further includes:

[0037] Determining the first predetermined threshold according to the upper limit of the predetermined operating temperature, and determining the second predetermined threshold according to the lower limit of the predetermined operating temperature, wherein the upper limit of the predetermined operating temperature is greater than the lower limit of the predetermined operating temperature.

[0038] According to another aspect of the present disclosure, there is provided a controller, including:

[0039] A temperature receiving module, configured to obtain the temperature of the battery pack collected by the environmental perception module, wherein the environmental perception module is arranged around the battery pack;

[0040] A control module, configured to control the heat insulation cover to open and control the heat generated by the energy storage inverter module to heat the battery pack when the temperature of the battery pack is lower than the lower limit of the predetermined operating temperature. The battery pack is arranged inside the heat insulation cover, and the energy storage inverter module generates heat during operation. An openable part is arranged on one side of the heat insulation cover close to the energy storage inverter module.

[0041] In some embodiments of the present disclosure, the controller is configured to perform operations for implementing the battery pack temperature regulation method described in any one of the above embodiments.

[0042] According to another aspect of the present disclosure, there is provided a controller, including:

[0043] A memory, configured to store instructions;

[0044] A processor, configured to execute the instructions, such that the controller performs operations for implementing the battery pack temperature regulation method described in any one of the above embodiments.

[0045] According to another aspect of the present disclosure, there is provided a non-transitory computer-readable storage medium, wherein the computer-readable storage medium stores computer instructions, and when the instructions are executed by a processor, the battery pack temperature regulation method described in any one of the above embodiments is implemented.

[0046] The present disclosure can realize intelligent temperature regulation of household energy storage devices, enable the household energy storage devices to be used at low temperatures, increase the temperature of the battery, and improve the battery discharge performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present disclosure, and those of ordinary skill in the art can also obtain other drawings based on these drawings without creative efforts.

[0048] Figure 1 Schematic diagrams of some embodiments of the battery pack temperature regulation device of the present disclosure.

[0049] Figure 2 Schematic diagrams of some embodiments of the battery pack temperature regulation method of the present disclosure.

[0050] Figure 3 Schematic diagrams of some embodiments of the controller of the present disclosure.

[0051] Figure 4 Schematic diagrams of some other embodiments of the controller of the present disclosure. Detailed implementation manners

[0052] Next, the technical solutions in the embodiments of the present disclosure will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, rather than all the embodiments. The following description of at least one exemplary embodiment is actually illustrative only and in no way limits the present disclosure, its application or use. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present disclosure without creative efforts belong to the scope of protection of the present disclosure.

[0053] Unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions and values set forth in these embodiments do not limit the scope of the present disclosure.

[0054] At the same time, it should be understood that, for the sake of convenience of description, the sizes of the various parts shown in the drawings are not drawn in actual proportional relationship.

[0055] Technologies, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods and devices should be regarded as part of the authorization specification.

[0056] In all the examples shown and discussed here, any specific value should be construed as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values.

[0057] It should be noted that like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0058] Figure 1 It is a schematic diagram of some embodiments of the battery pack temperature regulation device of the present disclosure. As Figure 1 shown, the battery pack temperature regulation device of the present disclosure may include an environmental perception module 1, a heat insulation cover 3, a energy storage and current conversion module 4, and a controller 5, where:

[0059] The environmental perception module 1 is arranged around the battery pack 2 and is used to detect the temperature of the battery pack.

[0060] In the above embodiments of the present disclosure, temperature test points are arranged around the battery pack 2 to monitor the temperature distribution field of the entire pack.

[0061] In some embodiments of the present disclosure, the battery pack temperature may be the temperature T1 of the battery pack before heat exchange.

[0062] The heat insulation cover 3, the battery pack 2 is arranged inside the heat insulation cover.

[0063] The energy storage and current conversion module 4 is used to generate heat during operation. An openable part 31 is provided on one side of the heat insulation cover close to the energy storage and current conversion module.

[0064] In some embodiments of the present disclosure, the energy storage and current conversion module 4 may be at least one of devices such as inductors, capacitors, high-frequency switching tube devices, inductive reactance devices, and impedance devices.

[0065] In some embodiments of the present disclosure, the energy storage and current conversion module 4 may be an energy storage converter.

[0066] In some embodiments of the present disclosure, during the process of the battery discharging externally or an external energy source charging the battery pack 2, current passes through the energy storage and current conversion module 4, and the energy storage and current conversion module 4 (such as an inductive reactance device or an impedance device) generates heat.

[0067] The controller 5 is respectively connected to the openable part 31 of the heat insulation cover 3 and the environment perception module 1; the controller 5 can be used to control the heat insulation cover 3 to open and control the heat generated by the energy storage and current conversion module to heat the battery pack 2 when the temperature of the battery pack is lower than the lower limit of the predetermined operating temperature.

[0068] The heat insulation cover 3 outside the battery pack 2 in the above embodiments of the present disclosure realizes a small heat loss between the battery and the external environment in a low-temperature environment. The heat insulation cover 3 in the above embodiments of the present disclosure can be opened in a timely manner to conduct heat convection with the current conversion module.

[0069] In some embodiments of the present disclosure, as Figure 1 shown, the energy storage and current conversion module 4 and the battery pack 2 are arranged in layers.

[0070] In some embodiments of the present disclosure, as Figure 1 shown, the energy storage and current conversion module 4 layer is arranged below the battery pack layer, and the heat insulation cover 3 and the battery pack 2 form a battery pack layer.

[0071] The inventor found that in the related art, the battery is arranged below the energy storage and current conversion module. The battery temperature near the current conversion module is higher than that far from the current conversion module, resulting in a local temperature difference warning. In the above embodiments of the present disclosure, the energy storage and current conversion module layer is arranged below the battery pack layer, which can keep the relative distance between the battery and the current conversion module consistent, thereby avoiding local heat concentration.

[0072] The above embodiments of the present disclosure involve that when multiple groups and multiple layers of battery packs are arranged, it is necessary to optimize and adjust the relative positions. The above embodiments of the present disclosure require the battery environment temperature to rise during low-temperature operation of the battery, and the surrounding working environment needs to be adjusted - cooled in a high-temperature environment. When the converter and the battery pack are arranged in one layer / one row in the above embodiments of the present disclosure, there will be no problem of large local temperature differences in multiple-layer battery packs due to the difference in distance from the current converter.

[0073] In some embodiments of the present disclosure, the controller 5 can be used to control the heat shield 3 to open when the temperature of the battery pack is lower than the lower limit Timin of the predetermined operating temperature, and control the heat generated by the energy storage converter module 4 to rise upward to heat the battery pack 2.

[0074] In some embodiments of the present disclosure, the battery pack temperature control device may further include a motor, wherein:

[0075] The motor is respectively connected to the controller 5 and the perforable part 31 of the heat shield 3, and is used to drive the perforable part 31 to open or close according to the instruction of the controller 5.

[0076] In some embodiments of the present disclosure, as Figure 1 shown, the battery pack temperature control device further includes a fan 6, wherein:

[0077] The fan 6 is arranged below the energy storage converter module 4.

[0078] In some embodiments of the present disclosure, the fan 6 can be an axial flow fan.

[0079] The controller 5 can also be used to control the fan 6 to turn on when the temperature of the battery pack is greater than or equal to the first predetermined threshold, and discharge the heat generated by the energy storage converter module 4 to the outside, wherein the first predetermined threshold is greater than the lower limit Timin of the predetermined operating temperature.

[0080] The axial flow fan in the above embodiments of the present disclosure discharges the heat generated by the system to the outside in a high-temperature operating environment, avoiding the reduction of the battery cycle life caused by long-term high-temperature operation.

[0081] In some embodiments of the present disclosure, the battery pack temperature control device further includes a ventilation opening, wherein:

[0082] The ventilation opening is arranged below the fan 6.

[0083] The controller 5 can be used to control the fan 6 to turn on when the temperature of the battery pack is greater than or equal to the first predetermined threshold, and discharge the heat generated by the energy storage converter module 4 to the outside through the ventilation opening.

[0084] In some embodiments of the present disclosure, the motor is connected to the fan 6; the controller 5 can be used to drive the fan 6 to turn on by controlling the motor when the temperature of the battery pack is greater than or equal to the first predetermined threshold, and discharge the heat generated by the energy storage converter module 4 to the outside through the ventilation opening.

[0085] In some embodiments of the present disclosure, as Figure 1 shown, the battery pack temperature control device includes a plurality of fans 6 and a plurality of energy storage converter modules 4, wherein; each fan 6 is arranged below one energy storage converter module 4.

[0086] In some embodiments of the present disclosure, the controller 5 can also be used to keep the battery warm by controlling the motor to close the heat shield 3 when the temperature of the battery pack is greater than or equal to the second predetermined threshold and less than the first predetermined threshold, where the second predetermined threshold is less than the first predetermined threshold, and the second predetermined threshold is greater than the predetermined lower limit of the operating temperature Timin.

[0087] In some embodiments of the present disclosure, the controller 5 can also be used to determine the first predetermined threshold according to the predetermined upper limit of the operating temperature Timax, and determine the second predetermined threshold according to the predetermined lower limit of the operating temperature Timin, where the predetermined upper limit of the operating temperature Timax is greater than the predetermined lower limit of the operating temperature Timin.

[0088] In some embodiments of the present disclosure, the controller 5 can also be used to determine the first predetermined threshold according to the sum of the predetermined upper limit of the operating temperature Timax and a predetermined value, and determine the second predetermined threshold according to the sum of the predetermined lower limit of the operating temperature Timin and the predetermined value, where the predetermined upper limit of the operating temperature Timax is greater than the predetermined lower limit of the operating temperature Timin.

[0089] In some embodiments of the present disclosure, the optimal operating range of the battery pack is 15~45°C, the predetermined upper limit of the operating temperature Timax of the battery pack is 45°C, the predetermined lower limit of the operating temperature Timin of the battery pack is 15°C, and the predetermined value is 5°C.

[0090] In some embodiments of the present disclosure, the controller 5 can be used to determine that the difference between the temperature of the battery pack and the predetermined upper limit of the operating temperature Timax is the first difference; when the first difference is greater than or equal to the predetermined value, the controller 5 controls the motor to drive the fan 6 to start, and discharges the heat generated by the energy storage inverter module 4 to the outside through the ventilation opening.

[0091] In some embodiments of the present disclosure, the controller 5 can also be used to determine that the difference between the temperature of the battery pack and the predetermined lower limit of the operating temperature Timin is the second difference; when the second difference is greater than or equal to the predetermined value and the first difference is less than the predetermined value, the controller 5 controls the motor to close the heat shield 3 to keep the battery warm.

[0092] Based on the battery pack temperature control device provided in the above embodiments of the present disclosure, intelligent temperature control can be realized, achieving low-cost, intelligent and convenient temperature adjustment. The intelligent temperature control device in the above embodiments of the present disclosure can enable the household energy storage device to be used at low temperature, heat up the battery, and improve the battery discharge performance.

[0093] The battery box design in the above embodiments of the present disclosure can simultaneously meet the requirements of preventing heat accumulation and different position module temperature difference alarms after the operating temperature exceeds a certain value, and dissipating heat to ensure the reliable and stable operation of the system.

[0094] In the above embodiments of the present disclosure, according to the ambient temperature, the energy storage device can be intelligently adjusted to turn on the battery thermal insulation and heating function or turn on the heat dissipation, so as to keep the battery pack inside the device operating within a suitable temperature range. The above embodiments of the present disclosure can be adapted to regions with large differences in annual temperature changes and high-altitude cold regions throughout the four seasons, and the energy storage can operate reliably and efficiently.

[0095] The above embodiments of the present disclosure propose an intelligent temperature control device. Through the temperature acquisition, comparison and operation of the environment perception module 1 and the battery pack 2 inside, the low-temperature heat insulation and heat dissipation cooling methods can be intelligently turned on in the control strategy, and the suitable operating range of the energy storage device battery can be realized. The energy storage converter device and the battery pack 2 in the above embodiments of the present disclosure are integrally designed, and the battery pack 2 is designed with a heat insulation cover 3, which can be turned on when necessary to realize the heat dissipation function of the battery pack 2.

[0096] Figure 1 The embodiments also give schematic diagrams of some embodiments of the energy storage device of the present disclosure. As Figure 1 shown, the energy storage device of the present disclosure may include a battery pack 2 and a battery pack temperature control device as described in any of the above embodiments.

[0097] Based on the energy storage device provided by the above embodiments of the present disclosure, it is an integrated energy storage product that combines intelligent temperature detection and thermal control. Considering the design of the optimal working temperature of the battery pack, it can operate in the optimal range (for example, 15~45°C), adjust the internal heat of the environmental regulation system, and make full use of the heat generating components to regulate the temperature of the battery pack.

[0098] In the above embodiments of the present disclosure, the controller integrates temperature measurement and comparison operation of the set target value.

[0099] The controller can be used to calculate the two operation differences ΔT1 = T1 - Timax and ΔT2 = T1 - Timin according to the temperature T1 of the battery pack 2 before heat exchange and the ideal operating temperature Ti (Timin = 15°C, Timax = 45°C).

[0100] In some embodiments of the present disclosure, the controller can also be used to heat the battery pack 2 when ΔT2 is negative, and the control unit executes to open the heat insulation cover 3 outside the battery pack 2, and the heat generated by the operation of the energy storage converter module 4 rises and enters the battery pack 2.

[0101] The main function of the energy storage converter mode is to charge and discharge the battery. The thermal field generated by the operation of the energy storage converter mode in the above embodiments of the present disclosure can be used to expand the operation reliability of the battery at the critical temperature and heat the battery.

[0102] In some embodiments of the present disclosure, the controller can also be used to turn off the heat shield 3 for battery heat preservation when 35 > △T2 ≥ 5.

[0103] In some embodiments of the present disclosure, the controller can also be used to turn on the fan 6 to take out the heat generated by the energy storage converter from the small system when △T1 ≥ 5, so as to achieve heat dissipation of the temperature inside the battery pack 2.

[0104] In some embodiments of the present disclosure, the number and position of the fans 6 arranged can comprehensively consider the external environment, or the number of the fans 6 running can be turned on through the control module to adjust the temperature of the battery pack.

[0105] The controller of the above embodiments of the present disclosure can compare the ambient temperature with the set ideal operating temperature range value, heat or dissipate heat from the battery pack 2, and finally drive the heat shield 3 to open the vent or the fan 6 to rotate to take away excessive heat through the motor.

[0106] The converter module of the above embodiments of the present disclosure is placed in the middle position between the battery pack 2 and the cooling fan 6, and the heat convects in a reasonable direction at the required moment.

[0107] The above embodiments of the present disclosure relate to an electric energy storage device, especially an integrated design of a battery pack and an energy storage converter device. The electric energy storage products of the above embodiments of the present disclosure can exert the performance of the battery in both low-temperature environments and high-temperature environments, and have good environmental adaptability. The above embodiments of the present disclosure can solve the problems of heat preservation and heating of the battery at low temperature and temperature difference alarm caused by heat concentration at high temperature.

[0108] The inventors found through research that: for the related calculations of natural water circulation heating and the conventional use of electric heating films on electric vehicles, they rely on external power and electricity to adjust the local environmental temperature of the battery operation. The energy storage device of the above embodiments of the present disclosure is a device for storing photovoltaic and wind power in a home environment. Therefore, the battery heating method in the experimental electric vehicle scenario generally cannot be used for reference. The related calculation of battery internal resistance self-heating is also a relatively impractical method, and a very small battery internal resistance is required. The energy storage converter module uses the self-heating effect of the integrated energy storage device of the battery pack and the converter unit to heat the battery, without the need to introduce an external power supply and heat circulation conversion device. The above embodiments of the present disclosure have very low costs and have great cost advantages.

[0109] The above embodiments of the present disclosure not only adjust the battery heating, but also have an implementation method for heat dissipation when the temperature is too high.

[0110] Figure 2 It is a schematic diagram of some embodiments of the battery pack temperature adjustment method of the present disclosure. Preferably, this embodiment can be implemented by the battery pack temperature adjustment method of the present disclosure or the controller of the present disclosure (for example Figure 1The controller of the embodiment 5) or the energy storage device of the present disclosure is executed. As Figure 2 As shown, the DC bus charging and discharging method of the present disclosure may include step 21-step 22, where:

[0111] Step 21, the controller acquires the battery pack temperature collected by the environmental perception module 1, where the environmental perception module 1 is arranged around the battery pack 2.

[0112] Step 22, when the battery pack temperature is less than the lower limit Timin of the predetermined operating temperature, the controller controls the heat shield 3 to open, and controls the heat generated by the energy storage converter module 4 to heat the battery pack 2. The battery pack 2 is arranged in the heat shield 3, and the energy storage converter module 4 generates heat during operation. An openable part 31 is provided on one side of the heat shield 3 close to the energy storage converter module 4.

[0113] In some embodiments of the present disclosure, the battery pack temperature regulation method may further include: when the battery pack temperature is greater than or equal to the first predetermined threshold, the controller controls the fan 6 to turn on, and discharges the heat generated by the energy storage converter module 4 to the outside. The first predetermined threshold is greater than the lower limit Timin of the predetermined operating temperature, and the fan 6 is arranged below the energy storage converter module 4.

[0114] In some embodiments of the present disclosure, the battery pack temperature regulation method further includes: when the battery pack temperature is greater than or equal to the second predetermined threshold and less than the first predetermined threshold, the controller closes the heat shield 3 by controlling the motor to keep the battery warm, where the second predetermined threshold is less than the first predetermined threshold, and the second predetermined threshold is greater than the lower limit Timin of the predetermined operating temperature.

[0115] In some embodiments of the present disclosure, the battery pack temperature regulation method may further include: the controller determines the first predetermined threshold according to the upper limit Timax of the predetermined operating temperature, and determines the second predetermined threshold according to the lower limit Timin of the predetermined operating temperature, where the upper limit Timax of the predetermined operating temperature is greater than the lower limit Timin of the predetermined operating temperature.

[0116] In some embodiments of the present disclosure, the optimal operating range of the battery pack is 15~45°C, the upper limit Timax of the predetermined operating temperature of the battery pack is 45°C, the lower limit Timin of the predetermined operating temperature of the battery pack is 15°C, and the predetermined value is 5°C.

[0117] In some embodiments of the present disclosure, the battery pack temperature regulation method may further include: determining the difference between the battery pack temperature and the upper limit Timax of the predetermined operating temperature as the first difference; when the first difference is greater than or equal to the predetermined value, the controller drives the fan 6 to turn on by controlling the motor, and discharges the heat generated by the energy storage converter module 4 to the outside through the ventilation opening.

[0118] In some embodiments of the present disclosure, the battery pack temperature regulation method may further include: determining a second difference between the battery pack temperature and a predetermined lower limit of the operating temperature Timin; when the second difference is greater than or equal to a predetermined value and the first difference is less than the predetermined value, controlling the motor to close the heat shield 3 to keep the battery warm.

[0119] Based on the battery pack temperature regulation method provided in the above embodiments of the present disclosure, intelligent temperature control can be achieved, and low-cost, intelligent and convenient temperature regulation can be realized. The intelligent temperature regulation device in the above embodiments of the present disclosure can enable the household energy storage device to be used at low temperatures, heat up the battery, and improve the battery discharge performance.

[0120] The battery box design in the above embodiments of the present disclosure can, when the operating temperature exceeds a certain value, prevent heat accumulation, prevent different position module temperature difference alarms, dissipate heat, and ensure the reliable and stable operation of the system.

[0121] The above embodiments of the present disclosure can, according to the ambient temperature, intelligently adjust whether the energy storage device turns on the battery heat preservation and heating function or the heat dissipation function to keep the battery pack in the battery box operating within a suitable temperature range. The above embodiments of the present disclosure can be adapted to regions with large differences in annual temperature changes and high-altitude cold regions, and the energy storage can operate reliably and efficiently throughout the year.

[0122] The above embodiments of the present disclosure propose an intelligent temperature regulation method. Through the temperature acquisition, comparison and operation inside the environment perception module 1 and the battery pack 2, the low-temperature heat insulation and heat dissipation cooling methods can be intelligently turned on in the control strategy, and the battery operation in the energy storage device can be within a suitable range. The energy storage converter device and the battery pack 2 in the above embodiments of the present disclosure are integrated in one design. The battery pack 2 is designed with a heat shield 3, which can be turned on when necessary, and the heat dissipation function of the battery pack 2 can be realized.

[0123] Figure 3 It is a schematic diagram of some embodiments of the controller of the present disclosure. As Figure 3 shown, the controller of the present disclosure (for example, Figure 1 the controller 5 in the embodiment) may include a temperature receiving module 51 and a control module 52, wherein:

[0124] The temperature receiving module 51 is used to obtain the battery pack temperature collected by the environment perception module 1, wherein the environment perception module 1 is arranged around the battery pack 2.

[0125] The control module 52 is used to control the heat shield 3 to open when the battery pack temperature is less than the predetermined lower limit of the operating temperature Timin, and control the heat generated by the energy storage converter module 4 to heat the battery pack 2. The battery pack 2 is arranged in the heat shield 3. The energy storage converter module 4 generates heat during operation. An openable part 31 is arranged on the side of the heat shield 3 close to the energy storage converter module 4.

[0126] In some embodiments of the present disclosure, the control module 52 may further be configured to control the fan 6 to turn on and discharge the heat generated by the energy storage converter module 4 to the outside when the battery pack temperature is greater than or equal to a first predetermined threshold, wherein the first predetermined threshold is greater than the lower limit of the predetermined operating temperature Timin, and the fan 6 is disposed below the energy storage converter module 4.

[0127] In some embodiments of the present disclosure, the control module 52 may further be configured to control the motor to close the heat shield 3 to insulate the battery when the battery pack temperature is greater than or equal to a second predetermined threshold and less than the first predetermined threshold, wherein the second predetermined threshold is less than the first predetermined threshold and greater than the lower limit of the predetermined operating temperature Timin.

[0128] In some embodiments of the present disclosure, the control module 52 may further be configured to determine the first predetermined threshold according to the upper limit of the predetermined operating temperature Timax and determine the second predetermined threshold according to the lower limit of the predetermined operating temperature Timin, wherein the upper limit of the predetermined operating temperature Timax is greater than the lower limit of the predetermined operating temperature Timin.

[0129] In some embodiments of the present disclosure, the optimal operating range of the battery pack is 15 - 45 °C, the upper limit of the predetermined operating temperature Timax of the battery pack is 45 °C, the lower limit of the predetermined operating temperature Timin of the battery pack is 15 °C, and the predetermined value is 5 °C.

[0130] In some embodiments of the present disclosure, the control module 52 may further be configured to determine that the difference between the battery pack temperature and the upper limit of the predetermined operating temperature Timax is a first difference; when the first difference is greater than or equal to the predetermined value, control the motor to drive the fan 6 to turn on and discharge the heat generated by the energy storage converter module 4 to the outside through the vent.

[0131] In some embodiments of the present disclosure, the control module 52 may further be configured to determine that the difference between the battery pack temperature and the lower limit of the predetermined operating temperature Timin is a second difference; when the second difference is greater than or equal to the predetermined value and the first difference is less than the predetermined value, control the motor to close the heat shield 3 to insulate the battery.

[0132] In some embodiments of the present disclosure, the controller 5 is configured to perform the operations of implementing the battery pack temperature regulation method as described in any one of the above embodiments (e.g., Figure 2 Embodiment).

[0133] Based on the controller provided in the above embodiments of the present disclosure, temperature measurement and comparison operations for setting target values are integrated. The controller in the above embodiments of the present disclosure can compare the ambient temperature with the set ideal operating temperature range value, heat or dissipate heat from the battery pack 2, and finally drive the heat shield 3 to open the vent / fan 6 to rotate and take away excessive heat through the motor.

[0134] Figure 4 This is a schematic diagram of some other embodiments of the controller of the present disclosure. As Figure 4 shown, the controller of the present disclosure (such as Figure 1 the controller 5 in the embodiment) may include a memory 58 and a processor 59, wherein:

[0135] The memory 58 is used to store instructions.

[0136] The processor 59 is used to execute the instructions, so that the controller 5 performs operations to implement the battery pack temperature regulation method as described in any of the above embodiments (such as Figure 2 the embodiment).

[0137] The above embodiments of the present disclosure not only regulate battery heating, but also have implementation methods for heat dissipation when the temperature is too high.

[0138] The electrical energy storage products in the above embodiments of the present disclosure can exert the performance of the battery in both low-temperature and high-temperature environments, and have good environmental adaptability. The above embodiments of the present disclosure can solve the problems of heat preservation and heating of the battery at low temperature and temperature difference alarms caused by heat concentration at high temperature.

[0139] According to another aspect of the present disclosure, a non-transitory computer-readable storage medium is provided, wherein the computer-readable storage medium stores computer instructions, and when the instructions are executed by a processor, the battery pack temperature regulation method as described in any of the above embodiments (such as Figure 2 the embodiment) is implemented.

[0140] Based on the non-transitory computer-readable storage medium provided in the above embodiments of the present disclosure, intelligent temperature control can be realized, achieving low-cost and intelligent and convenient temperature regulation. The intelligent temperature regulation device in the above embodiments of the present disclosure can enable household energy storage devices to be used at low temperatures, raise the temperature of the battery, and improve the battery discharge performance.

[0141] The battery box design in the above embodiments of the present disclosure can simultaneously prevent heat accumulation and temperature difference alarms of different position modules after the operating temperature exceeds a certain value, dissipate heat, and ensure the reliable and stable operation of the system.

[0142] In the above embodiments of the present disclosure, according to the ambient temperature, the energy storage device can be intelligently adjusted to turn on the battery heat preservation and heating function or turn on the heat dissipation, so as to keep the battery pack in the device operating within a suitable temperature range. The above embodiments of the present disclosure can be adapted to regions with large differences in seasonal temperature changes throughout the year and high-altitude cold regions, and the energy storage can operate reliably and efficiently.

[0143] The above embodiments of the present disclosure propose an intelligent temperature control device. Through the temperature acquisition, comparison and operation in the environment perception module 1 and inside the battery pack 2, the low-temperature heat insulation and heat dissipation cooling methods can be intelligently turned on in the control strategy, and the appropriate operating range of the energy storage device battery can be achieved. The energy storage converter device and the battery pack 2 in the above embodiments of the present disclosure are integrally designed. The battery pack 2 is designed with a heat insulation cover 3, and can be turned on when necessary to achieve the heat dissipation function of the battery pack 2.

[0144] The controller described above can be implemented as a general-purpose processor, a programmable logic controller (PLC), a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components or any suitable combination thereof for performing the functions described in this application.

[0145] So far, the present disclosure has been described in detail. In order to avoid obscuring the concept of the present disclosure, some details well known in the art have not been described. Those skilled in the art can clearly understand how to implement the technical solutions disclosed herein based on the above description.

[0146] Those of ordinary skill in the art can understand that all or part of the steps to implement the above embodiments can be completed by hardware, or can be completed by a program instructing relevant hardware. The program can be stored in a computer-readable storage medium. The above-mentioned storage medium can be a read-only memory, a magnetic disk or an optical disc, etc.

[0147] The description of the present disclosure is given for purposes of illustration and description, and is not intended to be exhaustive or to limit the present disclosure to the disclosed form. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are chosen and described in order to better explain the principles of the present disclosure and its practical applications, and to enable those of ordinary skill in the art to understand the present disclosure and design various embodiments with various modifications suitable for specific purposes.

Claims

1. A battery pack temperature regulation device, characterized in that, Comprising: An environment perception module, arranged around the battery pack, for detecting the temperature of the battery pack; A heat shield, with the battery pack disposed therein; A energy storage and conversion module, for generating heat during operation, and an openable part is provided on one side of the heat shield close to the energy storage and conversion module; A controller, connected to the openable part of the heat shield and the environment perception module respectively, for controlling the opening of the heat shield and heating the battery pack with the heat generated by the energy storage and conversion module when the temperature of the battery pack is less than the lower limit of the predetermined operating temperature; Wherein, the battery pack temperature control device is for a battery pack of a household energy storage device; The controller is further configured to determine a first predetermined threshold according to the sum of the predetermined upper operating temperature and a predetermined value, and determine a second predetermined threshold according to the sum of the predetermined lower operating temperature and the predetermined value, wherein the predetermined upper operating temperature is greater than the predetermined lower operating temperature, and the first predetermined threshold is greater than the predetermined upper operating temperature; when the temperature of the battery pack is greater than or equal to the second predetermined threshold and less than the first predetermined threshold, the heat shield is closed to keep the battery warm, wherein the second predetermined threshold is less than the first predetermined threshold and the second predetermined threshold is greater than the predetermined lower operating temperature; when the temperature of the battery pack is greater than or equal to the first predetermined threshold, the controller controls the fan to turn on to exhaust the heat generated by the energy storage and conversion module to the outside; The controller is further configured to determine the difference between the temperature of the battery pack and the predetermined upper operating temperature as a first difference; determine the difference between the temperature of the battery pack and the predetermined lower operating temperature as a second difference; when the second difference is greater than or equal to the predetermined value and the first difference is less than the predetermined value, the heat shield is closed to keep the battery warm.

2. The battery pack temperature control device according to claim 1, wherein: The energy storage and conversion module and the battery pack are arranged in layers; The energy storage and conversion module layer is arranged below the battery pack layer, and the heat shield and the battery pack form the battery pack layer; The controller is configured to control the opening of the heat shield and control the heat generated by the energy storage and conversion module to rise to heat the battery pack when the temperature of the battery pack is less than the lower limit of the predetermined operating temperature.

3. The battery pack temperature regulation device according to claim 1 or 2, characterized in that, Further comprising: A motor, connected to the controller and the openable part of the heat shield respectively, for driving the openable part to open or close according to the instruction of the controller.

4. The battery pack temperature regulation device according to claim 3, characterized in that, Further comprising: A fan, arranged below the energy storage and conversion module; The controller is configured to control the fan to turn on to exhaust the heat generated by the energy storage and conversion module to the outside when the temperature of the battery pack is greater than or equal to the first predetermined threshold, wherein the first predetermined threshold is greater than the lower limit of the predetermined operating temperature.

5. The battery pack temperature regulation device according to claim 4, characterized in that, Further comprising: A ventilation opening, arranged below the fan; The controller is configured to control the fan to turn on to exhaust the heat generated by the energy storage and conversion module to the outside through the ventilation opening when the temperature of the battery pack is greater than or equal to the first predetermined threshold.

6. The battery pack temperature regulation device according to claim 5, characterized in that The motor is connected to the fan; The controller is configured to drive the fan to turn on through controlling the motor to exhaust the heat generated by the energy storage and conversion module to the outside through the ventilation opening when the temperature of the battery pack is greater than or equal to the first predetermined threshold.

7. The battery pack temperature regulation device according to claim 4, characterized in that Comprising a plurality of fans and a plurality of energy storage and conversion modules, wherein; each fan is arranged below one energy storage and conversion module.

8. The battery pack temperature control device according to claim 4, characterized in that a controller, configured to, when the temperature of the battery pack is greater than or equal to a second predetermined threshold and less than a first predetermined threshold, close the heat shield by controlling a motor to keep the battery warm, wherein the second predetermined threshold is less than the first predetermined threshold, and the second predetermined threshold is greater than the lower limit of the predetermined operating temperature.

9. The battery pack temperature control device according to claim 1 or 2, characterized in that the energy storage and current conversion module is at least one of an inductor, a capacitor, a high-frequency switching tube device, an inductive reactance device, and an impedance device; during the process of the battery discharging externally or an external energy source charging the battery pack, current passes through the energy storage and current conversion module, and the energy storage and current conversion module generates heat.

10. An energy storage device, characterized in that, It includes a battery pack and the battery pack temperature control device according to any one of claims 1-9.

11. A method for regulating the temperature of a battery pack, characterized in that, It includes: obtaining the temperature of the battery pack collected by the environmental perception module, wherein the environmental perception module is arranged around the battery pack; determining the first predetermined threshold according to the sum of the predetermined operating temperature upper limit and a predetermined value, and determining the second predetermined threshold according to the sum of the predetermined operating temperature lower limit and the predetermined value, wherein the predetermined operating temperature upper limit is greater than the predetermined operating temperature lower limit, and the first predetermined threshold is greater than the predetermined operating temperature upper limit; when the temperature of the battery pack is less than the lower limit of the predetermined operating temperature, controlling the heat shield to open, and controlling the heat generated by the energy storage and current conversion module to heat the battery pack, wherein the battery pack is arranged inside the heat shield, the energy storage and current conversion module generates heat during operation, and an openable part is arranged on one side of the heat shield close to the energy storage and current conversion module; when the temperature of the battery pack is greater than or equal to the second predetermined threshold and less than the first predetermined threshold, closing the heat shield to keep the battery warm, wherein the second predetermined threshold is less than the first predetermined threshold, and the second predetermined threshold is greater than the lower limit of the predetermined operating temperature; when the temperature of the battery pack is greater than or equal to the first predetermined threshold, controlling the fan to turn on to discharge the heat generated by the energy storage and current conversion module externally; wherein, the battery pack temperature control method is executed by the controller of the battery pack temperature control device, and the battery pack temperature control device is the battery pack temperature control device of a household energy storage device; wherein, the battery pack temperature control method further includes: determining the difference between the temperature of the battery pack and the predetermined operating temperature upper limit as a first difference; determining the difference between the temperature of the battery pack and the predetermined operating temperature lower limit as a second difference; when the second difference is greater than or equal to the predetermined value and the first difference is less than the predetermined value, closing the heat shield to keep the battery warm.

12. The battery pack temperature regulation method according to claim 11, wherein It further includes: when the temperature of the battery pack is greater than or equal to the first predetermined threshold, controlling the fan to turn on to discharge the heat generated by the energy storage and current conversion module externally, wherein the first predetermined threshold is greater than the lower limit of the predetermined operating temperature, and the fan is arranged below the energy storage and current conversion module.

13. The battery pack temperature regulation method according to claim 11 or 12, characterized in that, It further includes: when the temperature of the battery pack is greater than or equal to the second predetermined threshold and less than the first predetermined threshold, closing the heat shield by controlling the motor to keep the battery warm, wherein the second predetermined threshold is less than the first predetermined threshold, and the second predetermined threshold is greater than the lower limit of the predetermined operating temperature.

14. A controller, characterized in that, It includes: a temperature receiving module, configured to obtain the temperature of the battery pack collected by the environmental perception module, wherein the environmental perception module is arranged around the battery pack; A control module is configured to determine a first predetermined threshold based on the sum of a predetermined upper operating temperature and a predetermined value, and determine a second predetermined threshold based on the sum of a predetermined lower operating temperature and the predetermined value, where the predetermined upper operating temperature is greater than the predetermined lower operating temperature, and the first predetermined threshold is greater than the predetermined upper operating temperature; when the battery pack temperature is less than the predetermined lower operating temperature, control the heat shield to open, and control the heat generated by the energy storage inverter module to heat the battery pack, where the battery pack is arranged inside the heat shield, the energy storage inverter module generates heat during operation, and an openable part is arranged on one side of the heat shield close to the energy storage inverter module; when the battery pack temperature is greater than or equal to the second predetermined threshold and less than the first predetermined threshold, close the heat shield to keep the battery warm, where the second predetermined threshold is less than the first predetermined threshold and greater than the predetermined lower operating temperature; when the battery pack temperature is greater than or equal to the first predetermined threshold, control the fan to turn on to discharge the heat generated by the energy storage inverter module to the outside; wherein, the controller is the controller of the battery pack temperature control device, and the battery pack temperature control device is the battery pack temperature control device of a household energy storage device; wherein, the control module is further configured to determine the difference between the battery pack temperature and the predetermined upper operating temperature as a first difference; determine the difference between the battery pack temperature and the predetermined lower operating temperature as a second difference; when the second difference is greater than or equal to the predetermined value and the first difference is less than the predetermined value, close the heat shield to keep the battery warm.

15. The controller according to claim 14, characterized in that, The controller is configured to implement the battery pack temperature control method according to any one of claims 12 - 13.

16. A controller, characterized in that, Comprising: a memory for storing instructions; a processor for executing the instructions to enable the controller to implement the battery pack temperature control method according to any one of claims 11 - 13; wherein, the controller is the controller of the battery pack temperature control device, and the battery pack temperature control device is the battery pack temperature control device of a household energy storage device.

17. A non-transitory computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer instructions, and when the instructions are executed by the processor, the battery pack temperature control method according to any one of claims 11 - 13 is implemented.

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