Outdoor power supply device, control method and control device thereof

Abstract

The present invention proposes an outdoor power supply device and a control method and a control device thereof, belonging to the technical field of outdoor power supplies. The outdoor power supply device includes a battery, a switch circuit and a power supply output terminal for connecting to an external load, the input terminal of the switch circuit is connected to the power supply terminal of the battery, and the output terminal of the switch circuit is connected to the power supply output terminal; the method includes the following steps: first obtaining the working environment temperature of the battery, and then setting a target undervoltage value according to the working environment temperature; when the battery voltage is lower than the target undervoltage value, controlling the switch circuit to operate to disconnect the path between the power supply terminal of the battery and the power supply output terminal. The present invention effectively improves the working flexibility of the outdoor power supply device.

Description

Technical Field

[0001] The present invention relates to the technical field of outdoor power supplies, and in particular to an outdoor power supply device and a control method and a control device thereof. Background Art

[0002] In order to protect the batteries inside and maximize the actual service life of the batteries, outdoor power supplies often have undervoltage protection inside, that is, when the battery voltage is lower than a certain value, the battery output is stopped to prevent the battery from being over-discharged. However, in some actual use occasions of outdoor power supply devices, such as in an environment with low ambient temperature, the DC impedance of the battery will be relatively large, resulting in a lower voltage when it is output, which in turn causes the undervoltage protection to be triggered when the battery still has a large amount of power, affecting the flexibility of the use of the outdoor power supply device. Summary of the invention

[0003] The main purpose of the present invention is to provide a control method for an outdoor power supply device, aiming to improve the working flexibility of the outdoor power supply device.

[0004] To this end, the present invention proposes a control method for an outdoor power supply device, wherein the outdoor power supply device comprises a battery, a switch circuit and a power supply output terminal for connecting to an external load, wherein the input terminal of the switch circuit is connected to the power supply terminal of the battery, and the output terminal of the switch circuit is connected to the power supply output terminal; the method comprises the following steps:

[0005] Step S100, obtaining the working environment temperature of the battery;

[0006] Step S200, setting a target undervoltage value according to the working environment temperature;

[0007] Step S300: When the battery voltage is lower than the target undervoltage value, the switch circuit is controlled to operate so as to disconnect the path between the power supply end of the battery and the power supply output end.

[0008] Optionally, the step of setting a target undervoltage according to the working environment temperature specifically includes:

[0009] Step S210: determining the corresponding voltage gear from a plurality of voltage gears according to the working environment temperature, and setting it as the target voltage gear; wherein the plurality of voltage gears are arranged in order from high to low according to their corresponding voltage values ​​to form a first order;

[0010] Step S220: setting the voltage value corresponding to the target voltage level as the target undervoltage value.

[0011] Optionally, the step S210 specifically includes the following steps:

[0012] Step S211: when the working environment temperature is greater than a preset first temperature value, determine the voltage gear corresponding to the current working environment temperature among the multiple voltage gears according to a first logic, and set it as a target voltage gear; wherein the first logic includes: determining the voltage gear corresponding to the working environment temperature according to a preset working environment temperature-voltage gear mapping table; in the preset working environment temperature-voltage gear mapping table, the lower the working environment temperature, the lower the voltage value corresponding to the voltage gear matched thereto;

[0013] Step S212: when the working environment temperature is lower than a preset first temperature value, determining the voltage gear corresponding to the current working environment temperature from among the multiple voltage gears according to the first logic, and setting it as a predetermined voltage gear;

[0014] If the output power of the battery does not reach the preset first power, setting the predetermined voltage level to the target voltage level;

[0015] If the output power of the battery reaches the preset first power, the Nth voltage level after the preset voltage level is set as the target voltage level according to the first sequence.

[0016] Optionally, the step S210 further includes the following steps:

[0017] Step S213: when the output power of the battery changes by an amount reaching a preset second power within a preset first time period, setting the voltage level corresponding to the lowest voltage value among the multiple voltage levels as the target voltage level in accordance with the first order and maintaining the preset second time period;

[0018] Step S214, after setting the voltage level corresponding to the lowest voltage value among the multiple voltage levels as the target voltage level and maintaining the target voltage level for a preset second time period, executing step S211 or step S212.

[0019] Optionally, the outdoor power supply device is preset with a plurality of time gears, and the plurality of time gears are arranged in descending order according to their corresponding time lengths to form a second order;

[0020] The steps of step S213 specifically include:

[0021] When the output power of the battery increases by an amount reaching a preset second power within a preset first duration, the duration gear corresponding to the increase is determined among the multiple duration gears according to a second logic, and the corresponding duration is set to the preset second duration, and the voltage gear corresponding to the lowest voltage value among the multiple voltage gears is set to the target voltage gear according to the first sequence and maintained at the preset second duration; wherein the second logic includes: determining the duration gear corresponding to the increase according to a preset increase-duration gear mapping table; in the preset increase-duration gear mapping table, the larger the increase, the larger the duration corresponding to the duration gear matched by it;

[0022] When the output power of the battery decreases by an amount reaching a preset second power within a preset first time period, the smallest of the multiple time periods corresponding to the multiple time periods is set as the preset second time period in accordance with the second order, and the voltage period corresponding to the lowest voltage value among the multiple voltage periods is set as the target voltage period and maintained for the preset second time period in accordance with the first order.

[0023] Optionally, the step S210 further includes the following steps:

[0024] When the output power of the battery is zero, determining the voltage level corresponding to the current working environment temperature from among the multiple voltage levels according to the first logic, and setting it as a predetermined voltage level;

[0025] According to the first sequence, the Mth voltage level after the preset voltage level is set as the target voltage level.

[0026] Optionally, the outdoor power supply device further includes a heat dissipation component, and the method further includes:

[0027] When the working environment temperature is lower than a preset second temperature value, the heat dissipation component is controlled to switch from a working state to a stopped working state.

[0028] The present invention also proposes a control device, which includes: a memory, a processor, and an outdoor power supply device control program stored in the memory and executable on the processor, wherein the outdoor power supply device control program is configured to implement the steps of the outdoor power supply device control method as described in any one of the above items.

[0029] The present invention also provides an outdoor power supply device, comprising the control device as described above.

[0030] The control method of the outdoor power supply device of the present invention comprises the following steps: firstly obtaining the working environment temperature of the battery, and then setting the target undervoltage value according to the working environment temperature; when the battery voltage is lower than the target undervoltage value, controlling the switch circuit to operate so as to disconnect the path between the power supply end of the battery and the power supply output end. In this way, in practical applications, the outdoor power supply device will set the required battery undervoltage value according to the adaptability of the working environment temperature of the battery, so that the outdoor power supply device can set the target undervoltage value lower when the working environment temperature of the battery is lower, thereby enabling the battery to still maintain output when the working environment temperature is lower, effectively ensuring the power supply to the external load connected to the outdoor power supply device, and improving the flexibility of the outdoor power supply device. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0032] Figure 1 A flow chart of an embodiment of a method for controlling an outdoor power supply device of the present invention;

[0033] Figure 2 A flow chart of another embodiment of a method for controlling an outdoor power supply device of the present invention;

[0034] Figure 3 A flow chart of another embodiment of the control method of an outdoor power supply device of the present invention;

[0035] Figure 4 A flow chart of another embodiment of the control method of an outdoor power supply device of the present invention;

[0036] Figure 5 FIG. 4 is a schematic diagram of a circuit module of an outdoor power supply device according to an embodiment of the present invention.

[0037] Description of Figure Numbers:

[0038] Battery 10 Switching Circuit 20 Memory 40 processor 30

[0039] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings in conjunction with the embodiments. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0042] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] In addition, in the present invention, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0044] In order to protect the batteries inside and maximize the actual service life of the batteries, outdoor power supplies often have undervoltage protection inside, that is, when the battery voltage is lower than a certain value, the battery output is stopped to prevent the battery from being over-discharged. However, in some actual use occasions of outdoor power supply devices, such as in an environment with low ambient temperature, the DC impedance of the battery will be relatively large, resulting in a lower voltage when it is output, which in turn causes the undervoltage protection to be triggered when the battery still has a large amount of power, affecting the flexibility and convenience of using the outdoor power supply device.

[0045] To this end, the present invention proposes a control method for an outdoor power supply device, wherein the outdoor power supply device includes a battery, a switching circuit and a power supply output end for connecting to an external load, the input end of the switching circuit is connected to the power supply end of the battery, and the output end of the switching circuit is connected to the power supply output end.

[0046] refer to Figure 5 In this embodiment, a control device for storing and executing the following method is provided in the outdoor power supply device. The control device can be implemented by a main controller, such as MCU, DSP (Digital Signal Process), FPGA (Field Programmable Gate Array), PLC, SOC (System On Chip), etc.

[0047] Optionally, the switch circuit can be implemented by using a switch tube, such as a MOS tube, an IGBT tube, etc., or by using a switch device, such as a relay, a contactor, a circuit breaker, etc.

[0048] Optionally, the power output terminal can be implemented by a three-pin socket, a two-pin socket, a USB interface, etc. It is understandable that there can be multiple power output terminals, one end of the switch circuit is connected to the output terminal of the battery, and the other end is connected to multiple power output terminals respectively. The power output terminal is used to connect to external loads, such as power strips, lamps, induction cookers and other equipment.

[0049] It is understandable that different types of functional circuits may be provided in the outdoor power supply device, such as a voltage conversion circuit, a communication circuit, etc. The power supply terminal of a part of the multiple functional circuits may be electrically connected to the path between the switch circuit and the power supply output terminal, or to the path between the switch circuit and the output terminal of the battery. For example, the boost circuit and the inverter circuit in the multiple functional circuits are connected in series in the path between the switch circuit and the power supply output terminal to provide 220V AC power to the external load.

[0050] refer to Figure 1 In one embodiment of the present invention, the method comprises the following steps:

[0051] Step S100, obtaining the working environment temperature of the battery;

[0052] In this embodiment, the outdoor power supply device may be provided with a temperature detection module for detecting the working environment temperature of the battery. Optionally, the temperature detection module may be implemented by a temperature sensor, such as an NTC temperature probe, a thermocouple, etc. The temperature detection module may detect the temperature of the battery, i.e., the working environment temperature of the battery, and output a corresponding temperature detection signal in the form of a digital signal or an analog signal to the control device, so that the control device confirms the working environment temperature of the battery.

[0053] Step S200, setting a target undervoltage value according to the working environment temperature;

[0054] In this embodiment, reference Figure 2 The step of setting the target undervoltage according to the working environment temperature specifically includes:

[0055] Step S210: determining the corresponding voltage gear from a plurality of voltage gears according to the working environment temperature, and setting it as the target voltage gear; wherein the plurality of voltage gears are arranged in order from high to low according to their corresponding voltage values ​​to form a first order;

[0056] Step S220: setting the voltage value corresponding to the target voltage level as the target undervoltage value.

[0057] Specifically, multiple voltage gears can be preset by R&D personnel. For example, if the battery is a 48V battery, multiple voltage gears include the first gear, the second gear, the third gear and the fourth gear, which are arranged from high to low, and the corresponding voltage values ​​are 42V, 41V, 40V and 39V, respectively. Optionally, R&D personnel can pre-store a working environment temperature-voltage gear mapping table in the control device (the preset working environment temperature-voltage gear mapping table can be generated by R&D personnel through multiple tests during the development period and pre-stored in the control device), so that the control device directly determines the current corresponding voltage gear according to the working environment temperature, and uses it as the target voltage gear, and sets the voltage value corresponding to the target voltage gear to the target undervoltage value. For example, based on the above example, the current working environment temperature is 10°C, and the control device determines that the corresponding voltage gear at this temperature is the second gear, that is, 41V, according to the pre-stored working environment temperature-voltage gear, then 41V will be set as the current target undervoltage value. Optionally, the R&D personnel may also preset a working environment temperature-voltage gear model or transfer function in the control device (the working environment temperature-voltage gear model or transfer function is generated by the R&D personnel through multiple tests during the development period and is pre-stored in the control device), so that the control device can select the corresponding voltage gear according to the current working environment temperature. It is understandable that when setting the voltage gear according to the working environment temperature, the lower the working environment temperature, the lower the voltage value corresponding to the matched voltage gear.

[0058] Step S300: When the battery voltage is lower than the target undervoltage value, the switch circuit is controlled to operate so as to disconnect the path between the power supply end of the battery and the power supply output end.

[0059] In this embodiment, when the voltage of the battery is lower than the target undervoltage value confirmed by the above embodiment, the switch circuit is controlled to operate so as to disconnect the path between the power supply end of the battery and the power supply output end. Through the above settings, the outdoor power supply device will set the required battery undervoltage value according to the adaptability of the working environment temperature of the battery. In this way, in actual applications, when the battery of the outdoor power supply device still has sufficient power and the operating temperature is low, the DC impedance caused by the low temperature will not increase, thereby causing the battery to trigger undervoltage protection when supplying power to the external load. This effectively ensures the stability of the battery output power under different states and improves the flexibility of the battery operation. At the same time, when the battery power becomes smaller and the voltage drops to the target undervoltage value, the undervoltage protection at this time can also be triggered to prevent the battery from being over-discharged.

[0060] The control method of the outdoor power supply device of the present invention comprises the following steps: firstly obtaining the working environment temperature of the battery, and then setting the target undervoltage value according to the working environment temperature; when the battery voltage is lower than the target undervoltage value, controlling the switch circuit to operate so as to disconnect the path between the power supply end of the battery and the power supply output end. In this way, in practical applications, the outdoor power supply device will set the required battery undervoltage value according to the adaptability of the working environment temperature of the battery, so that the outdoor power supply device can set the target undervoltage value to a lower value when the working environment temperature of the battery is low, thereby enabling the battery to still maintain output when the working environment temperature is low, effectively ensuring the power supply to the external load connected to the outdoor power supply device, and improving the flexibility of the outdoor power supply device.

[0061] It should be understood that outdoor power devices are now mainly used in outdoor scenes as power loads. In particular, in the environment of outdoor camping, more and more users begin to carry outdoor power devices for outdoor camping and use them to power necessary heating equipment and / or cooking equipment and / or lighting to improve the comfort of camping activities.

[0062] To this end, in one embodiment of the present invention, reference Figure 3 , the step S210 specifically includes the following steps:

[0063] Step S211: when the working environment temperature is greater than a preset first temperature value, determine the voltage gear corresponding to the current working environment temperature among the multiple voltage gears according to a first logic, and set it as a target voltage gear; wherein the first logic includes: determining the voltage gear corresponding to the working environment temperature according to a preset working environment temperature-voltage gear mapping table; in the preset working environment temperature-voltage gear mapping table, the lower the working environment temperature, the lower the voltage value corresponding to the voltage gear matched thereto;

[0064] Step S212: when the working environment temperature is lower than a preset first temperature value, determining the voltage gear corresponding to the current working environment temperature from among the multiple voltage gears according to the first logic, and setting it as a predetermined voltage gear;

[0065] If the output power of the battery does not reach the preset first power, setting the predetermined voltage level to the target voltage level;

[0066] If the output power of the battery reaches the preset first power, the Nth voltage level after the preset voltage level is set as the target voltage level according to the first sequence, where N is a positive integer.

[0067] In this embodiment, the preset first temperature value can be set by a developer or a user. When the developer sets the first temperature value, the developer can obtain the first temperature value through multiple tests. The preset working environment temperature-voltage gear mapping table can be determined by the developer through multiple tests during the development period to obtain the voltage gear corresponding to the working environment temperature.

[0068] Specifically, when the working environment temperature reaches the preset first temperature, the control device will believe that in the current ambient temperature of the outdoor power supply device, the user does not need to use higher-power heating equipment. Therefore, at the current working environment temperature, the control device will determine the voltage level corresponding to the working environment temperature according to the preset working environment temperature-voltage level mapping table, and set it as the target voltage level.

[0069] When the working environment temperature reaches the preset first temperature, the control device will think that in the current environment temperature of the outdoor power supply device, the user may have the need to use a higher power heating device. At this time, the control device will set the voltage gear determined according to the same process as above to the predetermined voltage gear. It can be understood that the power of the heating equipment is generally high. Therefore, a voltage detection circuit, such as a voltage divider detection circuit or a voltage detection chip, and a current detection circuit, such as a shunt, a Hall current sensor, etc., can also be provided in the outdoor power supply device to detect the voltage of the battery and the output current of the battery, and then confirm the output power of the battery.

[0070] When the output power of the battery does not reach the preset first power, the control device will determine that the user has no need to use the heating device, and will directly use the current predetermined voltage level as the target voltage level.

[0071] When the output power of the battery reaches the preset first power, the control device will determine that the user is currently in a lower temperature and has the need to use a heating device. For example, when camping outdoors on a snowy winter day, the user will connect a high-power heating device to an outdoor power supply device to increase the temperature of the barracks. At this time, the control device will set the Nth voltage gear after the above-mentioned preset voltage gear to the target voltage gear according to the arrangement order of the multiple voltage gears, that is, the first order. Among them, N can be preset by the R&D personnel or the user. For example, the current N is 2, and the voltage values ​​corresponding to the multiple voltage gears are: 42V, 41V, 40, 39.5V, 39V, 38.5V, 38V. If the voltage value corresponding to the current preset voltage gear is 39V, then after the output power of the above-mentioned battery reaches the preset first power and the working environment temperature is lower than the preset first temperature value, the control device will use 38V as the final actual target undervoltage value. It is understandable that in actual applications, the power of the heating equipment is relatively large, and the working current is relatively large, so the voltage drop on the DC impedance will be higher, that is, the battery voltage will be further lowered. Through the above settings, not only can a lower target undervoltage be set to ensure that the outdoor power supply device supplies normal power to the heating equipment when the user uses a relatively high-power heating equipment for heating, but also setting a lower target undervoltage can also extend the working time of the heating equipment as much as possible to a certain extent, thereby ensuring the user's heating needs. At the same time, in an environment where a heating device is not required, the outdoor power supply device will flexibly adjust the target undervoltage value according to the working environment temperature of the battery in accordance with the process of the above embodiment to ensure the stability of the battery output and prevent the battery from being over-discharged.

[0072] It should be understood that in actual situations, when an external load is connected or disconnected, for example, there is a power strip connected to the power output terminal of an outdoor power supply device, when a user plugs an electrical device into the power strip so that the outdoor power supply device can supply power to it through the power strip, or when an outdoor power supply device connected to the power strip is unplugged, a certain peak current will be generated, causing the current to suddenly increase within a certain period of time. At this time, the undervoltage protection of the outdoor power supply device may be easily triggered during this period of time.

[0073] For this purpose, refer to Figure 4 In one embodiment of the present invention, the step S210 further includes the following steps:

[0074] Step S213: when the output power of the battery changes by an amount reaching a preset second power within a preset first time period, setting the voltage level corresponding to the lowest voltage value among the multiple voltage levels as the target voltage level in accordance with the first order and maintaining the preset second time period;

[0075] In this embodiment, the output power of the battery can be detected in the same manner as in the above-mentioned embodiment, wherein the preset first duration and the preset second power can be set by the R&D personnel, and the duration of the preset first duration can be set to a duration close to 0. When the control device determines that the output power of the battery has changed by a preset second power within the preset first duration, it can be determined that a new external load is currently connected or a previous external load is connected. At this time, the control device will set the voltage gear corresponding to the lowest voltage value among the multiple voltage gears as the target voltage gear and maintain the preset second duration, so that when the external load is connected or connected, the outdoor power supply device will not cause the battery voltage to drop suddenly due to the instantaneous large current, thereby triggering undervoltage protection.

[0076] Specifically, the outdoor power supply device is preset with multiple duration gears, and the multiple duration gears are arranged in descending order according to their corresponding durations to form a second order; the multiple duration gears are preset in the control device in advance by R&D personnel.

[0077] The steps of step S213 specifically include:

[0078] When the output power of the battery increases by an amount reaching a preset second power within a preset first duration, the duration gear corresponding to the increase is determined among the multiple duration gears according to a second logic, and the corresponding duration is set to the preset second duration, and the voltage gear corresponding to the lowest voltage value among the multiple voltage gears is set to the target voltage gear according to the first sequence and maintained at the preset second duration; wherein the second logic includes: determining the duration gear corresponding to the increase according to a preset increase-duration gear mapping table; in the preset increase-duration gear mapping table, the larger the increase, the larger the duration corresponding to the duration gear matched by it;

[0079] When the output power of the battery decreases by an amount reaching a preset second power within a preset first duration, the minimum of the multiple durations corresponding to the multiple duration gears is set as the preset second duration according to the second sequence, and the voltage gear corresponding to the lowest voltage value among the multiple voltage gears is set as the target voltage gear and maintained for the preset second duration according to the first sequence. The preset increase amount-duration gear mapping table is generated by the R&D personnel through multiple tests during the R&D period and is pre-stored in the control device.

[0080] In this embodiment, when the output power of the battery increases by a preset second power within a preset first duration, the control device confirms that a new external load is currently connected. It is understandable that after the external load is connected, the greater the increase in power, the longer the peak current duration. Therefore, after confirming that a new external load is connected, the control device will determine the corresponding duration gear according to the increase in output power and the corresponding preset increase-duration gear mapping table (tested and obtained by R&D personnel, and then pre-stored in the control device), and set the duration corresponding to the duration gear to the preset second duration, and within the preset second duration, keep the current target voltage gear as the voltage gear with the lowest corresponding voltage value among multiple voltage gears, that is, within the preset second duration, keep the current target undervoltage value as the minimum value of multiple voltage values ​​corresponding to multiple voltage gears. Such a setting not only prevents the battery from triggering undervoltage protection when the external load is connected and generates a peak current; it can also adaptively adjust the current target undervoltage value to the duration of the minimum value of multiple voltage values ​​corresponding to multiple voltage gears according to the power change generated by the external load. Compared with the fixed duration, it can prevent the undervoltage protection from being triggered due to excessive power increase causing the current spike to last too long; and it can also prevent the current spike from lasting too long and less than the fixed duration due to the small power increase, thereby causing the battery voltage to be too low to trigger the undervoltage protection normally. This effectively ensures the flexibility and stability of the battery operation.

[0081] In this embodiment, when the output power of the battery decreases within the preset first time period to reach the preset second power, the control device confirms that a previous external load is currently connected. It can be understood that compared with the load connection, the duration of the peak current generated when the load is connected is generally shorter. Therefore, when the control device confirms that a previous external load is currently connected, it only needs to set the minimum of the multiple time periods corresponding to the multiple time periods as the preset second time period, and according to the first order, set the voltage position with the lowest voltage value corresponding to the multiple voltage positions as the target voltage position and maintain the preset second time period.

[0082] Step S214, after setting the voltage level corresponding to the lowest voltage value among the multiple voltage levels as the target voltage level and maintaining the target voltage level for a preset second time period, executing step S211 or step S212.

[0083] After the above-mentioned preset second time period, the peak current generated by the connection or disconnection of the external load almost disappears, and the current output by the battery returns to a normal and stable state. The control device will execute step S211 or step S212 in the above-mentioned embodiment.

[0084] Through the above settings, the outdoor power supply device can adjust the target undervoltage value in time when the external load is connected or disconnected, so as to prevent the peak current generated during connection or disconnection from causing the battery voltage to be too low in a short time and triggering the undervoltage protection, thereby effectively ensuring the stability and reliability of the output of the outdoor power supply device.

[0085] refer to Figure 5 The present invention also proposes a control device, which includes: a memory, a processor, and an outdoor power supply device control program stored in the memory and executable on the processor, wherein the outdoor power supply device control program is configured to implement the steps of any of the above-mentioned outdoor power supply device control methods.

[0086] It is worth noting that since the control device of the present invention includes all technical solutions of all embodiments of the above-mentioned outdoor power supply device control method, it at least has all the beneficial effects brought by the technical solutions of the embodiments of the above-mentioned outdoor power supply device control method, which will not be repeated here one by one.

[0087] refer to Figure 5 The present invention also proposes an outdoor power supply device, including the control device as described above.

[0088] It is worth noting that, since the outdoor power supply device of the present invention includes all technical solutions of all embodiments of the above-mentioned control device, it at least has all the beneficial effects brought by the technical solutions of the embodiments of the above-mentioned control device, which will not be described one by one here.

[0089] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings, or directly / indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A method for controlling an outdoor power supply device, characterized in that: The outdoor power supply device comprises a battery, a switch circuit and a power supply output terminal for connecting to an external load, the input terminal of the switch circuit is connected to the power supply terminal of the battery, and the output terminal of the switch circuit is connected to the power supply output terminal; the method comprises the following steps: Step S100, obtaining the working environment temperature of the battery; Step S200, setting a target undervoltage value according to the working environment temperature; Step S300: When the battery voltage is lower than the target undervoltage value, the switch circuit is controlled to operate so as to disconnect the path between the power supply end of the battery and the power supply output end; The step of setting the target undervoltage according to the working environment temperature specifically includes: Step S210: determining the corresponding voltage gear among a plurality of voltage gears according to the working environment temperature, and setting it as the target voltage gear; wherein the plurality of voltage gears are arranged in order from high to low according to their corresponding voltage values ​​to form a first order; Step S220, setting the voltage value corresponding to the target voltage level as the target undervoltage value; The step S210 specifically includes the following steps: Step S211: when the working environment temperature is greater than a preset first temperature value, determine the voltage gear corresponding to the current working environment temperature among the multiple voltage gears according to the first logic, and set it as the target voltage gear; wherein the first logic includes: determining the voltage gear corresponding to the working environment temperature according to a preset working environment temperature-voltage gear mapping table; in the preset working environment temperature-voltage gear mapping table, the lower the working environment temperature, the lower the voltage value corresponding to the voltage gear matched thereto; Step S212: when the working environment temperature is lower than a preset first temperature value, determining the voltage level corresponding to the current working environment temperature from among the multiple voltage levels according to the first logic, and setting it as a predetermined voltage level; If the output power of the battery does not reach the preset first power, setting the predetermined voltage level to the target voltage level; If the output power of the battery reaches the preset first power, the Nth voltage level after the preset voltage level is set as the target voltage level according to the first sequence, where N is a positive integer; When the output power of the battery does not reach the preset first power, it is determined that the user has no need to use the heating device, and the current preset voltage level is used as the target voltage level; When the output power of the battery reaches the preset first power, it is determined that the user is currently in a relatively low temperature and has a need to use a heating device, and a high-power heating device is connected to an outdoor power supply device to increase the temperature of the barracks; and the Nth voltage level after the above preset voltage level is set as the target voltage level in the first order; The step S210 further includes the following steps: Step S213: when the output power of the battery changes by an amount reaching a preset second power within a preset first time period, setting the voltage level corresponding to the lowest voltage value among the plurality of voltage levels as the target voltage level in accordance with the first order and maintaining the preset second time period; Step S214, after setting the voltage level corresponding to the lowest voltage value among the multiple voltage levels as the target voltage level and maintaining it for a preset second time period, executing step S211 or step S212.

2. The outdoor power supply device control method according to claim 1, characterized in that: The outdoor power supply device is preset with a plurality of time length gears, and the plurality of time length gears are arranged in descending order according to their corresponding time lengths to form a second sequence; The steps of step S213 specifically include: When the output power of the battery increases by an amount reaching a preset second power within a preset first duration, the duration gear corresponding to the increase is determined among the multiple duration gears according to a second logic, and the corresponding duration is set to the preset second duration, and the voltage gear corresponding to the lowest voltage value among the multiple voltage gears is set to the target voltage gear according to the first sequence and maintained at the preset second duration; wherein the second logic includes: determining the duration gear corresponding to the increase according to a preset increase-duration gear mapping table; in the preset increase-duration gear mapping table, the larger the increase, the larger the duration corresponding to the duration gear matched by it; When the output power of the battery decreases by an amount reaching a preset second power within a preset first time period, the smallest of the multiple time periods corresponding to the multiple time periods is set as the preset second time period in accordance with the second order, and the voltage period corresponding to the lowest voltage value among the multiple voltage periods is set as the target voltage period and maintained at the preset second time period in accordance with the first order.

3. A control device, characterized in that: The control device includes: a memory, a processor, and an outdoor power supply device control program stored in the memory and executable on the processor, wherein the outdoor power supply device control program is configured to implement the steps of the outdoor power supply device control method according to any one of claims 1 to 2.

4. An outdoor power supply device, characterized in that: Comprising the control device as claimed in claim 3.

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