Portable energy storage device capable of charging multiple ports simultaneously and charging power distribution method

Abstract

The application provides a portable energy storage device capable of charging multiple ports simultaneously and a charging power distribution method, at least two power input ports are arranged, the ports can be selectively used or simultaneously used, when the ports are simultaneously used, through ingenious power distribution logic design, it is ensured that each power input channel can work evenly, and it is avoided that one channel works at high power, and other channels work at very small power or do not work, so that internal heat is concentrated in one part, thereby improving the safety of the portable energy storage device during charging and prolonging the service life of the portable energy storage device, and the design also enables multiple charging equipment simultaneously supplied with power to more evenly share power, so that the charging equipment can work in a full load state.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of mobile power supply, in particular to a portable energy storage device capable of simultaneous charging of multiple ports and a charging power distribution method applied to the portable energy storage device. BACKGROUND

[0002] With the popularity of mobile devices and the increase in outdoor activities, the demand for portable energy storage devices is increasing. Whether it is outdoor camping, emergency power supply demand, or daily charging of mobile devices, mobile energy storage devices that can provide reliable power have become indispensable tools. The application scenarios of portable energy storage devices are wide-ranging, and users' requirements for their functional diversity and convenience are also increasing.

[0003] However, the existing portable energy storage devices generally have the problem of slow self-charging speed. This is mainly due to the fact that such devices usually only have one power input port, resulting in low efficiency when users charge the energy storage device themselves. The limitations of this design make it difficult for users to quickly recharge the energy storage device in a time-critical situation, which can affect travel arrangements or travel experience.

[0004] Based on this technical problem, some technicians have proposed the idea of setting up multiple power input ports in order to achieve fast charging of portable energy storage devices. However, after actual application, it was found that when multiple power sources are used to charge the mobile energy storage device at the same time, the lack of a reasonable power distribution mechanism leads to low charging efficiency, overload, and even damage to the energy storage device. SUMMARY

[0005] In view of the defects in the prior art, the purpose of the present application is to provide a portable energy storage device capable of simultaneous charging of multiple ports and a corresponding charging power distribution method. Through the ingenious design of the power distribution logic, the power input channels of the energy storage device can work more evenly, avoiding the concentration of internal heat in one part, thereby improving the safety of the portable energy storage device during charging and prolonging its service life. Moreover, this design also allows multiple charging devices used simultaneously to share power more evenly, thereby avoiding the charging devices from working under full load, thus greatly prolonging the service life of the charging devices.

[0006] To achieve the above-mentioned application purposes, the present application adopts the following technical solutions:

[0007] According to a first aspect of the present application, a portable energy storage device capable of simultaneous charging of multiple ports is provided, comprising a power configuration unit and two power input ports. The power configuration unit is used to configure the charging power of the power input ports connected to the charging devices. The maximum allowed input power of the energy storage device is defined as Pmax_in.

[0008] When the number of power input ports of the charging device is two, then:

[0009] When the sum of the maximum allowed charging power of the two power input ports ≤ Pmax_in, the power configuration unit configures the two power input ports to run at their maximum allowed charging power; when the sum of the maximum allowed charging power of the two power input ports > Pmax_in, the power configuration unit configures the two power input ports to run at the sum of Pmax_in as the running power, and performs power configuration according to the following rules:

[0010] If the maximum allowed charging power of the two power input ports is greater than Pmax_in / 2, the power configuration unit configures the two power input ports to run at Pmax_in / 2 as the running power; when the maximum allowed charging power of one of the power input ports ≤ Pmax_in / 2, the power configuration unit configures the power input port to run at its maximum allowed charging power, and configures the other power input port to run at the remaining power, the remaining power = (Pmax_in - the running power of the power input port running at the maximum allowed charging power).

[0011] According to the second aspect of the present application, a portable energy storage device capable of multi-port simultaneous charging is provided, comprising a power configuration unit and at least three power input ports, the power configuration unit is used to configure the charging power of the power input ports connected to the charging device, and the maximum allowed input power of the energy storage device is defined as Pmax_in;

[0012] When the number of power input ports of the charging device ≥ 2, then:

[0013] If the sum of the maximum allowed charging power of the ports > Pmax_in, the power configuration unit configures the ports to run at the sum of Pmax_in as the running power, and performs power configuration according to the following rules: when the maximum allowed charging power of each port is greater than Pmax_in / N, the power configuration unit configures the ports to run at Pmax_in / N as the running power; when the maximum allowed charging power of some of the ports ≤ Pmax_in / N, for these ports, the power configuration unit performs the first power configuration, which makes the ports run at the maximum allowed charging power, assuming that the total power occupied by the ports is B1, the remaining power that the power configuration unit can configure is P1 = Pmax_in - B1, and the number of remaining unallocated power ports is M1 = N - the number of ports configured to run at the maximum allowed charging power in the first time, then for the remaining M1 ports:

[0014] If the maximum allowed charging power of all the ports is greater than P1 / M1, the power configuration unit makes the remaining M1 ports operate at P1 / M1; if the maximum allowed charging power of some ports is still less than or equal to P1 / M1, the power configuration unit configures the power according to the following rules. In the following rules, after the kth power configuration by the power configuration unit, the ports configured to operate at the maximum allowed charging power in the kth configuration occupy a total power of Bk, the remaining power available for configuration by the power configuration unit is Pk, and the number of ports with remaining power not yet allocated is Mk, where k is a positive integer and k≥1:

[0015] In the remaining Mk ports, for the ports with the maximum allowed charging power less than or equal to Pk / Mk, the power configuration unit performs the (k+1)th power configuration to make these ports operate at the maximum allowed charging power. Assume that these ports occupy a total power of Bk+1, the remaining power available for configuration by the power configuration unit is Pk+1=Pmax_in-B1-…-Bk+1, and the number of ports with remaining power not yet allocated is Mk+1=Mk-number of ports configured to operate at the maximum allowed charging power in the (k+1)th configuration. In this rule, when the maximum allowed charging power of the remaining Mk+1 ports is greater than Pk+1 / Mk+1 after the (k+1)th power configuration, the rule is terminated, and the power configuration unit makes the remaining Mk+1 ports operate at Pk+1 / Mk+1.

[0016] As a preferred mode of the second aspect of the application, when the number of power input ports connected to the charging device is greater than or equal to 2, and the sum of the maximum allowed charging power of these ports is less than or equal to Pmax_in, the power configuration unit configures these ports to operate at their maximum allowed charging power.

[0017] As a preferred mode of the first or second aspect of the application, each power input port is pre-set with a maximum charging power, and the maximum allowed charging power of each port is the smaller of the pre-set maximum charging power and the charging power that the charging device can provide after being plugged into the port.

[0018] As a preferred mode of the first or second aspect of the application, when the number of power input ports connected to the charging device is one, then:

[0019] If the maximum allowed charging power of the power input port is less than or equal to Pmax_in, the power configuration unit configures the power input port to operate at its maximum allowed charging power; if the maximum allowed charging power of the power input port is greater than Pmax_in, the power configuration unit configures the power input port to operate at Pmax_in.

[0020] As a preferred mode of the first or second aspect of the application, some or all of the power input ports are bidirectional ports that can be used for both charging and discharging.

[0021] As a preferred mode of the first or second aspect of the present application, the portable energy storage device is internally provided with a main control board and one or more independent circuit boards connected to the main control board, the power input ports are arranged on the circuit boards, and the power configuration unit is arranged on the main control board.

[0022] As a preferred mode of the first or second aspect of the present application, the power configuration unit calculates the real-time power demand of each power input port by reading the preset parameters of the power input ports, and configures the charging power of each power input port according to the real-time power demand, wherein the preset parameters include current and voltage.

[0023] As a preferred mode of the first or second aspect of the present application, the circuit boards and the main control board are each provided with a protection circuit, which includes any one or more of an overcurrent protection circuit, an overvoltage protection circuit, an overtemperature protection circuit, and a short-circuit protection circuit, and the protection circuit responds and cuts off the power supply of the relevant circuit when an abnormal condition is detected.

[0024] According to a third aspect of the present application, a charging power distribution method of a portable energy storage device is provided, which is applied to the portable energy storage device capable of multi-port simultaneous charging according to the first aspect of the present application, and the method comprises:

[0025] When the number of power input ports connected to the charging device is two, then:

[0026] When the sum of the maximum allowable charging powers of the two power input ports is ≤Pmax_in, the power configuration unit configures both of the two power input ports to operate at their maximum allowable charging powers; when the sum of the maximum allowable charging powers of the two power input ports is >Pmax_in, the power configuration unit configures the two power input ports to operate at a sum of Pmax_in as the operating power, and performs power configuration according to the following rules:

[0027] If the maximum allowable charging powers of the two power input ports are both greater than Pmax_in / 2, the power configuration unit configures both of the two power input ports to operate at Pmax_in / 2 as the operating power; when the maximum allowable charging power of one of the power input ports is ≤Pmax_in / 2, the power configuration unit configures the power input port to operate at its maximum allowable charging power, and configures the other power input port to operate at the remaining power, wherein the remaining power = (Pmax_in - the operating power of the power input port operating at the maximum allowable charging power).

[0028] According to a fourth aspect of the present application, a charging power distribution method of a portable energy storage device is provided, which is applied to the portable energy storage device capable of charging multiple ports simultaneously according to the second aspect of the present application, and the method comprises:

[0029] When the number of the power input ports of the charging device is greater than or equal to 2, the following conditions are met:

[0030] If the sum of the maximum allowed charging powers of the ports is greater than Pmax_in, the power configuration unit configures the ports to have a sum of operating powers of Pmax_in, and performs power configuration according to the following rules: when the maximum allowed charging power of each port is greater than Pmax_in / N, the power configuration unit configures the ports to have an operating power of Pmax_in / N; when the maximum allowed charging power of some of the ports is less than or equal to Pmax_in / N, the power configuration unit performs first power configuration on the ports to have an operating power of the maximum allowed charging power, assuming that the total power occupied by the ports is B1, the remaining power that can be configured by the power configuration unit is P1=Pmax_in-B1, and the number of ports with remaining unallocated power is M1=N minus the number of ports configured to have an operating power of the maximum allowed charging power in the first time, then for the remaining M1 ports:

[0031] If the maximum allowed charging power of each of the remaining M1 ports is greater than P1 / M1, the power configuration unit configures the remaining M1 ports to have an operating power of P1 / M1; if there are still some ports with a maximum allowed charging power less than or equal to P1 / M1, the power configuration unit configures power according to the following rules: in the following rules, after the power configuration unit performs the kth power configuration, the total power occupied by the ports configured to have an operating power of the maximum allowed charging power in the kth time is Bk, the remaining power that can be configured by the power configuration unit is Pk, and the number of ports with remaining unallocated power is Mk, k is a positive integer and k≥1:

[0032] For the ports with a maximum allowed charging power less than or equal to Pk / Mk in the remaining Mk ports, the power configuration unit performs the (k+1)th power configuration to have an operating power of the maximum allowed charging power, assuming that the total power occupied by the ports is Bk+1, the remaining power that can be configured by the power configuration unit is Pk+1=Pmax_in-B1-…-Bk+1, and the number of ports with remaining unallocated power is Mk+1=Mk minus the number of ports configured to have an operating power of the maximum allowed charging power in the (k+1)th time; in the rules, when the maximum allowed charging power of the remaining Mk+1 ports is greater than Pk+1 / Mk+1 after the (k+1)th power configuration, the rules are terminated, and the power configuration unit configures the remaining Mk+1 ports to have an operating power of Pk+1 / Mk+1.

[0033] Compared with the prior art, the present application has the following beneficial effects:

[0034] 1. The portable energy storage device capable of simultaneous charging through multiple ports and the charging power distribution method, through the design of two or more power input ports, the simultaneous charging of multiple charging devices for the portable energy storage device itself can be met, the charging efficiency is greatly accelerated, and the type of the power input port is not limited, that is, in actual application, the power input port can be various types of input ports, and the types of the two power input ports can be the same or different from each other, so that the flexibility in actual application is improved.

[0035] 2. The portable energy storage device capable of simultaneous charging through multiple ports and the charging power distribution method, when multiple power input ports are used simultaneously, through the ingenious power distribution logic design, it is ensured that each power input channel can work evenly, so that the internal heat is concentrated in one part due to the large power working of one channel and the small or no power working of other channels, thereby improving the safety of the portable energy storage device during charging and prolonging the service life thereof, and the design also enables multiple charging devices for supplying power to the portable energy storage device to more evenly share the power, thereby avoiding the working of the charging device under full load, so that the service life of the charging device is greatly prolonged.

[0036] 3. The portable energy storage device capable of simultaneous charging through multiple ports and the charging power distribution method, through further design, the power input port can be used selectively or simultaneously, when used selectively, by comparing the size relationship between the maximum allowed input power of the device and the maximum allowed charging power of the port, the device can realize the maximum charging power input under the premise of ensuring safety. BRIEF DESCRIPTION OF DRAWINGS

[0037] Other features, objects and advantages of the present application will become more apparent from the following detailed description of non-limiting embodiments with reference to the attached drawings:

[0038] Figure 1 The structure schematic diagram of the portable energy storage device described in the first embodiment of the present application, in which the number of power input ports is two;

[0039] Figure 2 The structure schematic diagram of the portable energy storage device described in the second embodiment of the present application, in which the number of power input ports is three;

[0040] Figure 3 The structure schematic diagram of the portable energy storage device described in the second embodiment of the present application, in which the number of power input ports is four.

[0041] In the drawings:

[0042] 101 - first power input port;

[0043] 102 - second power input port;

[0044] 103 - third power input port;

[0045] 104 - fourth power input port;

[0046] 201 - power configuration unit DETAILED DESCRIPTION

[0047] In order to make the objectives, technical solutions, and superiorities of the embodiments of the present application clearer, the following will be combined with the accompanying drawings for clear and complete description of the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only some but not all of the embodiments of the present application. The components of the embodiments of the present application described and shown in the accompanying drawings can be arranged and designed in various different configurations.

[0048] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art without creative work based on the embodiments in the present application are within the scope of protection of the present application.

[0049] It should be noted that similar reference numbers and letters represent similar items in the following drawings, thus, once an item is defined in one drawing, it need not be further defined and explained in subsequent drawings. In addition, all directional indications (such as up, down, left, right, front, back, bottom, etc.) in the present application are only used to explain the relative position relationship, movement condition, etc. between components in a certain attitude (as shown in the drawings), and if the certain attitude changes, the directional indications also change accordingly. Further, the description involving “first”, “second”, etc. in the application is only for description purpose, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features.

[0050] In addition, in the present application, the use of phrases such as “the”, “and”, “all”, etc. does not require the number of power input ports to be necessarily 2 or more than 2, and also includes the case where the number of power input ports is 1. When the number of power input ports is 1, for example, “the power input ports” refers to “the power input port”, and “the sum of the maximum allowed charging power of the power input ports” refers to “the maximum allowed charging power of the power input port”. Further, in the present application, when A and B are equal, either of them is considered as the smaller value, thus, the so-called “the smaller value of A and B as the maximum allowed charging power” in the present application includes the case where A and B are equal and either of A and B can be taken as the smaller value.

[0051] Embodiment 1

[0052] The portable energy storage device provided by the embodiment can charge multiple ports simultaneously. In terms of structure, the energy storage device as a whole is made of lightweight and high-strength shell material, and is internally provided with one or more independent circuit boards. The circuit boards are provided with power input ports and charging input ports, and are connected to a main control board through wires. The main control board is embedded with an intelligent control chip, which includes a power configuration unit 201 for executing a power distribution algorithm. The power configuration unit 201 calculates the real-time power demand of each port by reading the current, voltage and other parameters of each port, and adjusts the charging and discharging power of each port accordingly. In addition, overcurrent protection, overvoltage protection, overtemperature protection and short circuit protection circuit elements are provided on the circuit boards and the main control board. When an abnormal situation is detected, these protection circuits will quickly respond and cut off the power supply of the related circuits. Since the core of the embodiment is the power distribution logic of the energy storage device in the charging mode only, it is specifically described as follows:

[0053] As shown in Figure 1 The portable energy storage device provided by the embodiment can charge multiple ports simultaneously. In terms of structure, the energy storage device as a whole is made of lightweight and high-strength shell material, and is internally provided with one or more independent circuit boards. The circuit boards are provided with power input ports and charging input ports, and are connected to a main control board through wires. The main control board is embedded with an intelligent control chip, which includes a power configuration unit 201 for executing a power distribution algorithm. The power configuration unit 201 calculates the real-time power demand of each port by reading the current, voltage and other parameters of each port, and adjusts the charging and discharging power of each port accordingly. In addition, overcurrent protection, overvoltage protection, overtemperature protection and short circuit protection circuit elements are provided on the circuit boards and the main control board. When an abnormal situation is detected, these protection circuits will quickly respond and cut off the power supply of the related circuits. Since the core of the embodiment is the power distribution logic of the energy storage device in the charging mode only, it is specifically described as follows:

[0054] For convenience of distinction and expression, when only one of the two power input ports is inserted into a charging device, the port is defined as the first power input port 101, and when both of the two power input ports are inserted into the charging device, they are respectively defined as the first power input port 101 and the second power input port 102.

[0055] The first power input port 101 and the second power input port 102 are both pre-set with maximum charging power. The pre-set maximum charging power of the first power input port is defined as a1, and the maximum charging power that can be provided by the charging device after the first power input port is inserted into the charging device is defined as b1. The smaller value of a1 and b1 is taken as the maximum allowed charging power of the first power input port 101. Similarly, the pre-set maximum charging power of the second power input port is defined as a2, and the maximum charging power that can be provided by the charging device after the second power input port is inserted into the charging device is defined as b2. The smaller value of a2 and b2 is taken as the maximum allowed charging power of the second power input port 102.

[0056] And, define the maximum allowed input power of the portable energy storage device provided by the present embodiment as Pmax_in, define the maximum allowed charging power of the first power input port 101 and the second power input port 102 as Pmax_c1_in and Pmax_c2_in respectively. When charging the portable energy storage device provided by the present embodiment with external charging equipment:

[0057] 1. When the sum of the maximum allowed charging power of the power input ports of the charging equipment ≤ Pmax_in, the power configuration unit 201 configures the power input ports to run at their maximum allowed charging power. This includes two cases:

[0058] (1) When only the first power input port 101 is inserted with charging equipment, if Pmax_c1_in ≤ Pmax_in, the power configuration unit 201 configures the first power input port 101 to run at Pmax_c1_in. For example, when the maximum allowed input power Pmax_in of the portable energy storage device is 120W, the maximum allowed charging power Pmax_c1_in of the first power input port 101 of the charging equipment is 60W, and Pmax_c1_in < Pmax_in, the power configuration unit 201 configures the first power input port 101 to run at Pmax_c1_in, i.e. 60W.

[0059] (2) When the first power input port 101 and the second power input port 102 are both inserted with charging equipment, if Pmax_c1_in + Pmax_c2_in ≤ Pmax_in, the power configuration unit 201 configures the first power input port 101 to run at Pmax_c1_in and the second power input port 102 to run at Pmax_c2_in. For example, when the maximum allowed input power Pmax_in of the portable energy storage device is 120W, the maximum allowed charging power Pmax_c1_in of the first power input port 101 is 50W, and the maximum allowed charging power Pmax_c2_in of the second power input port 102 is 60W, and Pmax_c1_in + Pmax_c2_in is 110W, which is less than Pmax_in, i.e. 120W, the power configuration unit 201 configures the first power input port 101 to run at Pmax_c1_in, i.e. 50W, and the second power input port 102 to run at Pmax_c2_in, i.e. 60W.

[0060] 2. When the sum of the maximum allowed charging power of the power input ports of the charging equipment > Pmax_in, the power configuration unit 201 configures the power input ports to run at the sum of Pmax_in, and:

[0061] (1) If the number of power input ports of the charging device accessed by the portable energy storage device is one, the power configuration unit 201 configures the power input port to operate at Pmax_in. For example, when the maximum allowed input power Pmax_in of the portable energy storage device is 120 W, the maximum allowed charging power Pmax_c1_in of the first power input port 101 of the charging device is 130 W, and Pmax_c1_in>Pmax_in, the power configuration unit 201 configures the first power input port 101 to operate at Pmax_in, i.e., 120 W.

[0062] (2) If the number of power input ports of the charging device accessed by the portable energy storage device is two:

[0063] ① When the maximum allowed charging power of both power input ports is greater than half of Pmax_in, the power configuration unit 201 configures both power input ports to operate at Pmax_in / 2. For example, when the maximum allowed input power Pmax_in of the portable energy storage device is 120 W, the maximum allowed charging power Pmax_c1_in of the first power input port 101 is 70 W, and the maximum allowed charging power Pmax_c1_in of the second power input port 102 is 80 W, Pmax_c1_in+Pmax_c2_in is 150 W, which is greater than Pmax_in, i.e., 120 W, and Pmax_c1_in and Pmax_c2_in are both greater than half of Pmax_in, i.e., 60 W, therefore the power configuration unit 201 configures the first power input port 101 and the second power input port 102 to operate at 60 W.

[0064] ② When the maximum allowed charging power of one of the power input ports is less than half of Pmax_in, the power configuration unit 201 configures the power input port to operate at its maximum allowed charging power, and configures the other power input port to operate at the remaining power, i.e., remaining power=Pmax_in-operating power of the power input port operating at the maximum allowed charging power. For example, when the maximum allowed input power Pmax_in of the portable energy storage device is 120 W, the maximum allowed charging power Pmax_c1_in of the first power input port 101 is 50 W, and the maximum allowed charging power Pmax_c1_in of the second power input port 102 is 80 W, Pmax_c1_in+Pmax_c2_in is 130 W, which is greater than Pmax_in, i.e., 120 W, and Pmax_c1_in is less than half of Pmax_in, i.e., 60 W, therefore the power configuration unit 201 configures the first power input port 101 to operate at 50 W, and configures the second power input port 102 to operate at (Pmax_in-Pmax_c1_in), i.e., 70 W.

[0065] The portable energy storage device capable of charging multiple ports simultaneously provided by the embodiment has the following advantages: first, through the design of two power input ports, two charging devices can simultaneously charge the portable energy storage device itself, greatly accelerating the charging efficiency; second, the technical solution itself and the realization of its technical effects have no restrictions on the types of power input ports, i.e., in actual application, the power input ports can be various types of input ports, and the types of the two power input ports can be the same or different from each other, thereby improving the flexibility in actual application, for example, both of the two power input ports can be bidirectional ports that can both charge and discharge; third, the two power input ports can be used alternatively or simultaneously, when used alternatively, by comparing the size relationship between the maximum allowed input power of the energy storage device and the maximum allowed charging power of the port, the energy storage device can realize the maximum charging power input under the premise of ensuring safety; when the two power input ports are used simultaneously, through the aforementioned power distribution logic, it is ensured that each power input channel can work evenly, avoiding that one channel works at high power while other channels work at very small power or do not work, which causes internal heat to concentrate in one part, thereby improving the safety of the portable energy storage device during charging and prolonging its service life, and this design also enables the two charging devices to more evenly share the power, thereby avoiding the charging devices from working under full load, thus greatly prolonging the service life of the charging devices.

[0066] Embodiment 2

[0067] The portable energy storage device capable of charging multiple ports simultaneously provided by the embodiment has the following advantages: first, through the design of two power input ports, two charging devices can simultaneously charge the portable energy storage device itself, greatly accelerating the charging efficiency; second, the technical solution itself and the realization of its technical effects have no restrictions on the types of power input ports, i.e., in actual application, the power input ports can be various types of input ports, and the types of the two power input ports can be the same or different from each other, thereby improving the flexibility in actual application, for example, both of the two power input ports can be bidirectional ports that can both charge and discharge; third, the two power input ports can be used alternatively or simultaneously, when used alternatively, by comparing the size relationship between the maximum allowed input power of the energy storage device and the maximum allowed charging power of the port, the energy storage device can realize the maximum charging power input under the premise of ensuring safety; when the two power input ports are used simultaneously, through the aforementioned power distribution logic, it is ensured that each power input channel can work evenly, avoiding that one channel works at high power while other channels work at very small power or do not work, which causes internal heat to concentrate in one part, thereby improving the safety of the portable energy storage device during charging and prolonging its service life, and this design also enables the two charging devices to more evenly share the power, thereby avoiding the charging devices from working under full load, thus greatly prolonging the service life of the charging devices.

[0068] The portable energy storage device capable of charging multiple ports simultaneously provided by the embodiment has the following advantages: first, through the design of two power input ports, two charging devices can simultaneously charge the portable energy storage device itself, greatly accelerating the charging efficiency; second, the technical solution itself and the realization of its technical effects have no restrictions on the types of power input ports, i.e., in actual application, the power input ports can be various types of input ports, and the types of the two power input ports can be the same or different from each other, thereby improving the flexibility in actual application, for example, both of the two power input ports can be bidirectional ports that can both charge and discharge; third, the two power input ports can be used alternatively or simultaneously, when used alternatively, by comparing the size relationship between the maximum allowed input power of the energy storage device and the maximum allowed charging power of the port, the energy storage device can realize the maximum charging power input under the premise of ensuring safety; when the two power input ports are used simultaneously, through the aforementioned power distribution logic, it is ensured that each power input channel can work evenly, avoiding that one channel works at high power while other channels work at very small power or do not work, which causes internal heat to concentrate in one part, thereby improving the safety of the portable energy storage device during charging and prolonging its service life, and this design also enables the two charging devices to more evenly share the power, thereby avoiding the charging devices from working under full load, thus greatly prolonging the service life of the charging devices.

[0069] Each power input port is pre-set with a maximum charging power, the maximum charging power of the power input port is defined as ai, and the maximum charging power that the charging device can provide after the power input port is inserted into the charging device is defined as bi, and the smaller value of ai and bi is taken as the maximum allowed charging power of the power input port. The maximum allowed input power of the portable energy storage device provided by the embodiment is defined as Pmax_in. When charging the portable energy storage device provided by the embodiment:

[0070] 1. When the sum of the maximum allowed charging power of the power input ports connected to the charging device is ≤ Pmax_in, the power configuration unit 201 configures the power input ports to run at their maximum allowed charging power.

[0071] 2. When the sum of the maximum allowed charging power of the power input ports connected to the charging device is greater than Pmax_in, the power configuration unit 201 configures the power input ports to run at a sum of power of Pmax_in, and:

[0072] (1) If the number of power input ports connected to the charging device is 1, the power configuration unit 201 configures the power input port to run at Pmax_in;

[0073] (2) If the number of power input ports connected to the charging device is N, N is a positive integer and N≥2:

[0074] ① When the maximum allowed charging power of each power input port is greater than Pmax_in / N, the power configuration unit 201 configures the power input ports to run at Pmax_in / N;

[0075] ② When there are some power input ports whose maximum allowed charging power is ≤ Pmax_in / N among the N power input ports, for these power input ports, the power configuration unit 201 performs the first power configuration to make them run at the maximum allowed charging power, assuming that the total power occupied by these power input ports is B1, the remaining power that the power configuration unit 201 can configure is P1=Pmax_in-B1, and the number of power input ports with remaining unallocated power is M1=N− the number of power input ports configured to run at the maximum allowed charging power in the first time, then for the remaining M1 power input ports:

[0076] a. If the maximum allowed charging power of all of them is greater than P1 / M1, the power configuration unit 201 makes the remaining M1 power input ports run at P1 / M1;

[0077] b. If there are some power input ports whose maximum allowed charging power is ≤ P1 / M1, the power configuration unit 201 configures the power according to the following rules (in the following rules, after the power configuration unit 201 performs the kth power configuration, the power occupied by the power input ports configured to run at the maximum allowed charging power in the kth time is Bk, the remaining power that the power configuration unit 201 can configure is Pk, and the number of power input ports with remaining unallocated power is Mk, k is a positive integer and k≥1):

[0078] Among the remaining Mk ports, for the power input ports whose maximum allowed charging power ≤ Pk / Mk, the power configuration unit 201 performs the k+1th power configuration, so that these power input ports run at the maximum allowed charging power. Assuming that the total power occupied by these power input ports is Bk+1, the remaining power Pk+1 that can be configured by the power configuration unit 201 is Pmax_in-B1-…-Bk+1, and the number of power input ports with remaining unallocated power Mk+1 is Mk-the number of power input ports configured to run at the maximum allowed charging power in the k+1th configuration. In this rule, when the maximum allowed charging power of the remaining Mk+1 power input ports is greater than Pk+1 / Mk+1 after the k+1th power configuration, the rule is terminated, and the power configuration unit 201 causes the remaining Mk+1 power input ports to run at Pk+1 / Mk+1.

[0079] The following enhances the understanding of the technical solutions provided by the present embodiment by defining the specific number of power input ports.

[0080] I. As shown in Figure 2 When the number of power input ports is 3:

[0081] For convenience of differentiation and description, when there is only one power input port inserted into the charging device, the port is defined as the first power input port 101; when two power input ports are inserted into the charging device, the two power input ports are defined as the first power input port 101 and the second power input port 102; when three power input ports are inserted into the charging device, the three power input ports are defined as the first power input port 101, the second power input port 102, and the third power input port 103; the maximum allowed charging power of the first power input port 101, the second power input port 102, and the third power input port 103 is defined as Pmax_c1_in, Pmax_c2_in, and Pmax_c3_in, respectively. When charging the portable energy storage device provided by the present embodiment:

[0082] 1. When the sum of the maximum allowed charging power of the power input ports connected to the charging device ≤ Pmax_in, the power configuration unit 201 configures these power input ports to run at their maximum allowed charging power. This includes three cases:

[0083] (1) When only the first power input port 101 is inserted with a charging device, if Pmax_c1_in ≤ Pmax_in, the power configuration unit 201 configures the first power input port 101 to operate at Pmax_c1_in. For example, when the maximum allowable input power Pmax_in of the portable energy storage device is 120 W, the maximum allowable charging power Pmax_c1_in of the first power input port 101 to which a charging device is connected is 60 W, and Pmax_c1_in < Pmax_in, the power configuration unit 201 configures the first power input port 101 to operate at Pmax_c1_in, i.e., 60 W.

[0084] (2) When the first power input port 101 and the second power input port 102 are inserted with charging devices, if Pmax_c1_in + Pmax_c2_in ≤ Pmax_in, the power configuration unit 201 configures the first power input port 101 to operate at Pmax_c1_in and the second power input port 102 to operate at Pmax_c2_in. For example, when the maximum allowable input power Pmax_in of the portable energy storage device is 120 W, the maximum allowable charging power Pmax_c1_in of the first power input port 101 is 50 W, the maximum allowable charging power Pmax_c2_in of the second power input port 102 is 60 W, and Pmax_c1_in + Pmax_c2_in is 110 W, which is less than Pmax_in, i.e., 120 W, the power configuration unit 201 configures the first power input port 101 to operate at Pmax_c1_in, i.e., 50 W, and the second power input port 102 to operate at Pmax_c2_in, i.e., 60 W.

[0085] (3) When the first power input port 101, the second power input port 102, and the third power input port 103 are all plugged into charging devices, if Pmax_c1_in+Pmax_c2_in+Pmax_c3_in≤Pmax_in, the power configuration unit 201 configures the first power input port 101 to run at Pmax_c1_in, the second power input port 102 to run at Pmax_c2_in, and the third power input port 103 to run at Pmax_c3_in. For example, when the maximum allowed input power Pmax_in of the portable energy storage device is 120W, the maximum allowed charging power Pmax_c1_in of the first power input port 101 is 30W, the maximum allowed charging power Pmax_c2_in of the second power input port 102 is 40W, and the maximum allowed charging power Pmax_c3_in of the third power input port 103 is 50W, because Pmax_c1_in+Pmax_c2_in+Pmax_c3_in is 120W, which is equal to Pmax_in, i.e., 120W, the power configuration unit 201 configures the first power input port 101 to run at Pmax_c1_in, i.e., 30W, the second power input port 102 to run at Pmax_c2_in, i.e., 40W, and the third power input port 103 to run at Pmax_c3_in, i.e., 50W.

[0086] 2. When the sum of the maximum allowed charging power of the power input ports plugged into charging devices > Pmax_in, the power configuration unit 201 configures the sum of the running powers of the power input ports to be Pmax_in, and:

[0087] (1) If only the first power input port 101 is plugged into a charging device, the power configuration unit 201 configures the first power input port 101 to run at Pmax_in. For example, when the maximum allowed input power Pmax_in of the portable energy storage device is 120W, and the maximum allowed charging power Pmax_c1_in of the first power input port 101 plugged into a charging device is 130W, because Pmax_c1_in>Pmax_in, the power configuration unit 201 configures the first power input port 101 to run at Pmax_in, i.e., 120W.

[0088] (2) When the number of power input ports plugged into charging devices is N, and the maximum allowed charging power of each power input port is greater than Pmax_in / N, then:

[0089] ① When N = 2, i.e. when the first power input port 101 and the second power input port 102 are connected to the charging device, and the maximum allowed charging power of the first power input port 101 and the second power input port 102 are both greater than Pmax_in / 2, the power configuration unit 201 configures the first power input port 101 and the second power input port 102 to run at Pmax_in / 2.

[0090] For example, when the maximum allowed input power Pmax_in of the portable energy storage device is 120W, the maximum allowed charging power Pmax_c1_in of the first power input port 101 is 70W, and the maximum allowed charging power Pmax_c2_in of the second power input port 102 is 80W, since Pmax_c1_in+Pmax_c2_in is 150W which is greater than Pmax_in, i.e. 120W, the power configuration unit 201 configures the first power input port 101 and the second power input port 102 to run at Pmax_in / 2, i.e. 60W.

[0091] ② When N = 3, i.e. when the first power input port 101, the second power input port 102, and the third power input port 103 are connected to the charging device, and the maximum allowed charging power of the first power input port 101, the second power input port 102, and the third power input port 103 are all greater than Pmax_in / 3, the power configuration unit 201 configures the first power input port 101, the second power input port 102, and the third power input port 103 to run at Pmax_in / 3.

[0092] For example, when the maximum allowed input power Pmax_in of the portable energy storage device is 120W, the maximum allowed charging power Pmax_c1_in of the first power input port 101 is 70W, the maximum allowed charging power Pmax_c2_in of the second power input port 102 is 80W, and the maximum allowed charging power Pmax_c3_in of the third power input port 103 is 90W, since Pmax_c1_in+Pmax_c2_in+Pmax_c3_in is 240W which is greater than Pmax_in, i.e. 120W, the power configuration unit 201 configures the first power input port 101, the second power input port 102, and the third power input port 103 to run at Pmax_in / 3, i.e. 40W.

[0093] (3) When the number of power input ports connected to the charging device is N, and the maximum allowed charging power of part of the power input ports is ≤Pmax_in / N, then:

[0094] When N=2, i.e. when the first power input port 101 and the second power input port 102 are connected to the charging device, if the maximum allowed charging power of one of the power input ports is ≤Pmax_in / 2, then for this power input port, the power configuration unit 201 performs the first power configuration, and makes this power input port run at the maximum allowed charging power. Assuming that the power occupied by this power input port is B1, the remaining power that can be configured by the power configuration unit 201 is P1=Pmax_in-B1, and the number of power input ports with remaining unallocated power is M1=N-number of power input ports configured to run at the maximum allowed charging power in the first time=2-1=1. For the remaining one power input port, because its maximum allowed charging power+B1>Pmax_in, it must be greater than Pmax_in-B1, i.e. it must be greater than P1, so its maximum allowed charging power must be greater than P1 / M1, and therefore the power configuration unit 201 makes the remaining power input port run at P1 / M1, i.e. P1.

[0095] For example, when the maximum allowed input power Pmax_in of the portable energy storage device is 120W, the maximum allowed charging power Pmax_c1_in of the first power input port 101 is 50W, and the maximum allowed charging power Pmax_c2_in of the second power input port 102 is 80W, because Pmax_c1_in+Pmax_c2_in is 130W, which is greater than Pmax_in (i.e. 120W), the power configuration unit 201 configures the sum of the running powers of the first power input port 101 and the second power input port 102 to be 120W. Because the maximum allowed charging power of the first power input port 101 is 50W, which is less than Pmax_in / 2 (i.e. 60W), therefore for this first power input port 101, the power configuration unit 201 performs the first power configuration, and makes the first power input port 101 run at the maximum allowed charging power Pmax_c1_in, i.e. 50W. The power occupied by the first power input port 101 is B1, which is 50W, and the remaining power that can be configured by the power configuration unit 201 is P1=Pmax_in-B1=120W-50W=70W. The number of power input ports with remaining unallocated power is M1=2-number of power input ports configured to run at the maximum allowed charging power in the first time=2-1=1. Therefore, for the remaining one power input port, i.e. the second power input port 102, because its maximum allowed charging power Pmax_c2_in is 80W, which is greater than P1 / M1 (i.e. 70W), the power configuration unit 201 configures the second power input port 102 to run at 70W.

[0096] When N=3, i.e. when the first power input port 101, the second power input port 102 and the third power input port 103 are all connected to the charging device, if the maximum allowed charging power of two of the power input ports is ≤Pmax_in / 3, then for the two power input ports, the power configuration unit 201 performs the first power configuration, so that the two power input ports operate at the maximum allowed charging power. Assuming that the power occupied by the two power input ports is B1, the remaining power that can be configured by the power configuration unit 201 is P1=Pmax_in-B1, and the number of power input ports with remaining unallocated power is M1=3−the number of power input ports configured to operate at the maximum allowed charging power in the first configuration=3−2=1, then for the remaining one power input port, since its maximum allowed charging power+B1>Pmax_in, it must be greater than Pmax_in-B1 (i.e. must be greater than P1), and therefore its maximum allowed charging power is greater than P1 / M1 (i.e. P1), so the power configuration unit 201 causes the remaining power input port to operate at P1 / M1 (i.e. P1).

[0097] For example, when the maximum allowed input power Pmax_in of the portable energy storage device is 120 W, the maximum allowed charging power Pmax_c1_in of the first power input port 101 is 30 W, the maximum allowed charging power Pmax_c2_in of the second power input port 102 is 40 W, and the maximum allowed charging power Pmax_c3_in of the third power input port 103 is 60 W, and Pmax_c1_in+Pmax_c2_in+Pmax_c3_in is 130 W, which is greater than Pmax_in (i.e., 120 W), the power configuration unit 201 configures the sum of the operating powers of the first power input port 101, the second power input port 102, and the third power input port 103 to be 120 W. Since the maximum allowed charging powers of the first power input port 101 and the second power input port 102 are 30 W and 40 W, respectively, which are in the interval ≤Pmax_in / 3 (i.e., 40 W), for the first power input port 101 and the second power input port 102, the power configuration unit 201 performs the first power configuration, so that the first power input port 101 and the second power input port 102 operate at the maximum allowed charging powers Pmax_c1_in and Pmax_c2_in, i.e., 30 W and 40 W, respectively. The power B1 occupied by the first power input port 101 and the second power input port 102 is 70 W, the remaining power P1 available for the power configuration unit 201 is P1=Pmax_in-B1=120 W-70 W=50 W, and the number of power input ports with remaining unallocated power is M1=3−the number of power input ports configured to operate at the maximum allowed charging power in the first power configuration=3−2=1. For the remaining one power input port, i.e., the third power input port 103, since its maximum allowed charging power Pmax_c3_in is 60 W, which is greater than P1 / M1 (i.e., 50 W), the power configuration unit 201 configures the third power input port 103 to operate at 50 W.

[0098] Further, when N=3, i.e. when the first power input port 101, the second power input port 102 and the third power input port 103 are all connected to the charging device, if the maximum allowed charging power of only one of the power input ports is ≤Pmax_in / 3, then for this power input port, the power configuration unit 201 performs the first power configuration, so that this power input port runs at the maximum allowed charging power, assuming that the total power occupied by this power input port is B1, the remaining power that can be configured by the power configuration unit 201 is P1=Pmax_in-B1, and the number of power input ports with remaining unallocated power is M1=3−the number of power input ports configured to run at the maximum allowed charging power in the first time=3−1=2, then for the remaining two power input ports, if their maximum allowed charging power is both greater than P1 / M1, then the power configuration unit 201 makes the remaining two power input ports both run at P1 / M1; if there is one power input port whose maximum allowed charging power is ≤P1 / M1, then the power configuration unit 201 performs the second power configuration, so that this power input port runs at the maximum allowed charging power, assuming that the total power occupied by this power input port is B2, the remaining power that can be configured by the power configuration unit 201 is P2=Pmax_in-B1-B2, and the number of power input ports with remaining unallocated power is M2=M1−the number of power input ports configured to run at the maximum allowed charging power in the second time=2−1=1, because the maximum allowed charging power of this remaining power input port+B1+B2>Pmax_in, it must be greater than Pmax_in-B1-B2 (i.e. it must be greater than P2), so its maximum allowed charging power is greater than P2 / M2 (i.e. P2), therefore the power configuration unit 201 makes the remaining power input port run at P2 / M2, i.e. P2.

[0099] For example, when the maximum allowed input power Pmax_in of the portable energy storage device is 120 W, the maximum allowed charging power Pmax_c1_in of the first power input port 101 is 30 W, the maximum allowed charging power Pmax_c2_in of the second power input port 102 is 50 W, and the maximum allowed charging power of the third power input port 103 is 60 W, since Pmax_c1_in+Pmax_c2_in+Pmax_c3_in is 140 W which is greater than Pmax_in (i.e. 120 W), the power configuration unit 201 configures the sum of the operating powers of the first power input port 101, the second power input port 102, and the third power input port 103 to be 120 W. Since only the maximum allowed charging power of the first power input port 101 is 30 W which is less than Pmax_in / 3 (i.e. 40 W), the power configuration unit 201 performs the first power configuration so that the first power input port 101 operates at its maximum allowed charging power Pmax_c1_in, i.e. 30 W. The first power input port 101 occupies a total power B1 of 30 W, and the power configuration unit 201 can configure a remaining power P1 of P1=Pmax_in-B1=120 W-30 W=90 W. The number of power input ports with remaining unallocated power is M1=3-first power input port operating at maximum allowed charging power=3-1=2. For the remaining two power input ports, i.e. the second power input port 102 and the third power input port 103, since their maximum allowed charging powers Pmax_c2_in and Pmax_c3_in are 50 W and 60 W respectively, both of which are greater than P1 / M1=45 W, the power configuration unit 201 configures the second power input port 102 and the third power input port 103 to operate at P1 / M1, i.e. 45 W.

[0100] For example, when the maximum allowable input power Pmax_in of the portable energy storage device is 120W, the maximum allowable charging power Pmax_c1_in of the first power input port 101 is 30W, the maximum allowable charging power Pmax_c2_in of the second power input port 102 is 45W, and the maximum allowable charging power of the third power input port 103 is 60W, since Pmax_c1_in + Pmax_c2_in + Pmax_c3_in is 135W, which is greater than Pmax_in (i.e., 120W), the power configuration unit 201 configures the sum of the operating power of the first power input port 101, the second power input port 102, and the third power input port 103 to be 120W. Since the maximum allowable charging power of the first power input port 101 is 30W, which is less than Pmax_in / 3 (i.e., 40W), the power configuration unit 201 performs a first power configuration for the first power input port 101, causing it to operate at its maximum allowable charging power Pmax_c1_in, i.e., 30W. The total power B1 occupied by the first power input port 101 is 30W. The remaining power that the power configuration unit 201 can configure is P1 = Pmax_in - B1 = 120W - 30W = 90W. The number of power input ports with unallocated power is M1 = 3 - the number of power input ports that operate at the maximum allowable charging power in the first configuration = 3 - 1 = 2. Therefore, for the remaining two power input ports, namely the second power input port 102 and the third power input port 103, since the second power input port 102... The maximum allowable charging power Pmax_c2_in is 45W, which is within the range of ≤P1 / M1 (i.e., 45W). Therefore, the power configuration unit 201 performs a second power configuration, making the second power input port 102 operate at its maximum allowable charging power Pmax_c2_in, i.e., 45W. The total power B2 occupied by the second power input port 102 is 45W. The remaining power that the power configuration unit 201 can configure is P2 = Pmax_in - B1 - B2 = 45W. The number of power input ports with remaining unallocated power M2 = M1 - the number of power input ports operating at the maximum allowable charging power in the second configuration = 1. Since the maximum allowable charging power of the third power input port 103 is 60W, which is greater than P2 / M2 (i.e., P2 = 45W), the power configuration unit 201 makes the remaining third power input port 103 operate at 45W.

[0101] II. Figure 3 As shown, when the number of power input ports is 4:

[0102] As the power distribution logic corresponding to the case that one, two, or three power input ports are inserted into the charging device has been described in detail above, based on the consideration of avoiding redundancy, the following will only describe in detail the power distribution logic corresponding to the case that four power input ports are inserted into the charging device. For the convenience of expression and distinction, when the four power input ports are all inserted into the charging device, the four power input ports are defined as the first power input port 101, the second power input port 102, the third power input port 103, and the fourth power input port 104, and the maximum allowed charging power of the four power input ports are defined as Pmax_c1_in, Pmax_c2_in, Pmax_c3_in, and Pmax_c4_in, respectively. When charging:

[0103] (1) If Pmax_c1_in+Pmax_c2_in+Pmax_c3_in+Pmax_c4_in≤Pmax_in, the power configuration unit 201 configures the first power input port 101 to operate at Pmax_c1_in, the second power input port 102 to operate at Pmax_c2_in, the third power input port 103 to operate at Pmax_c3_in, and the fourth power input port 104 to operate at Pmax_c4_in. For example, when the maximum allowed input power Pmax_in of the portable energy storage device is 120 W, the maximum allowed charging power Pmax_c1_in of the first power input port 101 is 20 W, the maximum allowed charging power Pmax_c2_in of the second power input port 102 is 30 W, the maximum allowed charging power Pmax_c3_in of the third power input port 103 is 30 W, and the maximum allowed charging power Pmax_c4_in of the fourth power input port 104 is 40 W, because Pmax_c1_in+Pmax_c2_in+Pmax_c3_in+Pmax_c4_in is 120 W, which is equal to Pmax_in (i.e., 120 W), the power configuration unit 201 configures the first power input port 101 to operate at Pmax_c1_in, i.e., 20 W, the second power input port 102 to operate at Pmax_c2_in, i.e., 30 W, the third power input port 103 to operate at Pmax_c3_in, i.e., 30 W, and the fourth power input port 104 to operate at Pmax_c4_in, i.e., 40 W.

[0104] (2) If Pmax_c1_in+Pmax_c2_in+Pmax_c3_in+Pmax_c4_in>Pmax_in, then:

[0105] ① When the maximum allowed charging power of only one of the power input ports is ≤Pmax_in / 4, the power configuration unit 201 performs first power configuration for the power input port, so that the power input port runs at the maximum allowed charging power. Assuming that the power input port occupies a total power of B1, the remaining power that can be configured by the power configuration unit 201 is P1=Pmax_in-B1, and the number of power input ports with remaining unallocated power is M1=4−the number of power input ports configured to run at the maximum allowed charging power in the first time=4−1=3. For the remaining three power input ports, if the maximum allowed charging power of each of the three power input ports is greater than P1 / M1, the power configuration unit 201 causes each of the remaining three power input ports to run at P1 / M1. If there is still one power input port whose maximum allowed charging power is ≤P1 / M1 among the three power input ports, the power configuration unit 201 performs second power configuration for the power input port, so that the power input port runs at the maximum allowed charging power. Assuming that the power input port occupies a total power of B2, the remaining power that can be configured by the power configuration unit 201 is P2=Pmax_in-B1-B2, and the number of power input ports with remaining unallocated power is M2=M1−the number of power input ports configured to run at the maximum allowed charging power in the second time=3−1=2. For the remaining two power input ports, if the maximum allowed charging power of each of the two power input ports is greater than P2 / M2, the power configuration unit 201 causes each of the remaining two power input ports to run at P2 / M2. If there is still one power input port whose maximum allowed charging power is ≤P2 / M2 among the two power input ports, the power configuration unit 201 performs third power configuration for the power input port, so that the power input port runs at the maximum allowed charging power. Assuming that the power input port occupies a total power of B3, the remaining power that can be configured by the power configuration unit 201 is P3=Pmax_in-B1-B2-B3, and the number of power input ports with remaining unallocated power is M3=M2−the number of power input ports configured to run at the maximum allowed charging power in the third time=2−1=1. For the remaining one power input port, because its maximum allowed charging power+B1+B2+B3>Pmax_in, it must be greater than Pmax_in-B1-B2-B3 (i.e., it must be greater than P3), so its maximum allowed charging power is greater than P3 / M3 (i.e., P3). Therefore, the power configuration unit 201 causes the remaining power input port to run at P3 / M3=P3.

[0106] For example, when the maximum allowed input power Pmax_in of the portable energy storage device is 200 W, the maximum allowed charging power Pmax_c1_in of the first power input port 101 is 50 W, the maximum allowed charging power Pmax_c2_in of the second power input port 102 is 60 W, the maximum allowed charging power Pmax_c3_in of the third power input port 103 is 70 W, and the maximum allowed charging power Pmax_c4_in of the fourth power input port 104 is 80 W. Since Pmax_c1_in + Pmax_c2_in + Pmax_c3_in + Pmax_c4_in is 260 W, which is greater than Pmax_in, i.e., 200 W, the power configuration unit 201 configures the sum of the operating powers of the first power input port 101, the second power input port 102, the third power input port 103, and the fourth power input port 104 to be 200 W. Since the maximum allowed charging power of the first power input port 101 is 50 W, which is equal to Pmax_in / 4 (i.e., 50 W), for this first power input port 101, the power configuration unit 201 performs the first power configuration, so that the first power input port 101 operates at its maximum allowed charging power Pmax_c1_in, i.e., 50 W. The first power input port 101 occupies a total power B1 of 50 W, and the remaining power that can be configured by the power configuration unit 201 is P1 = Pmax_in - B1 = 200 W - 50 W = 150 W. The number of power input ports with remaining unallocated power is M1 = 4 - the number of power input ports configured to operate at the maximum allowed charging power in the first power configuration = 4 - 1 = 3. For the remaining three power input ports, i.e., the second power input port 102, the third power input port 103, and the fourth power input port 104, since their maximum allowed charging powers Pmax_c2_in, Pmax_c3_in, and Pmax_c4_in are 60 W, 70 W, and 80 W, respectively, which are all greater than P1 / M1 (i.e., 50 W), the power configuration unit 201 configures the second power input port 102, the third power input port 103, and the fourth power input port 104 to operate at P1 / M1, i.e., 50 W.

[0107] For example, when the maximum allowed input power Pmax_in of the portable energy storage device is 200 W, the maximum allowed charging power Pmax_c1_in of the first power input port 101 is 20 W, the maximum allowed charging power Pmax_c2_in of the second power input port 102 is 50 W, the maximum allowed charging power Pmax_c3_in of the third power input port 103 is 70 W, and the maximum allowed charging power Pmax_c4_in of the fourth power input port 104 is 80 W, and Pmax_c1_in+Pmax_c2_in+Pmax_c3_in+Pmax_c4_in is 220 W, which is greater than Pmax_in, i.e., 200 W, the power configuration unit 201 configures the sum of the operating powers of the first power input port 101, the second power input port 102, the third power input port 103, and the fourth power input port 104 to be 200 W. Since the maximum allowed charging power of the first power input port 101 is 20 W, which is less than Pmax_in / 4 (i.e., 50 W), for the first power input port 101, the power configuration unit 201 performs the first power configuration, and the first power input port 101 operates at its maximum allowed charging power Pmax_c1_in, i.e., 20 W. The first power input port 101 occupies a total power B1 of 20 W, and the remaining power that can be configured by the power configuration unit 201 is P1=Pmax_in-B1=200 W-20 W=180 W. The number of power input ports with remaining unallocated power is M1=4−the number of power input ports configured to operate at the maximum allowed charging power in the first configuration=4−1=3. For the remaining three power input ports, since the maximum allowed charging power Pmax_c2_in of the second power input port 102 is 50 W, which is less than P1 / M1 (i.e., 60 W), the power configuration unit 201 performs the second power configuration, and the second power input port 102 operates at its maximum allowed charging power Pmax_c2_in, i.e., 50 W. The second power input port 102 occupies a total power B2 of 50 W, and the remaining power that can be configured by the power configuration unit 201 is P2=Pmax_in-B1-B2=130 W. The number of power input ports with remaining unallocated power is M2=M1−the number of power input ports configured to operate at the maximum allowed charging power in the second configuration=2. Since the maximum allowed charging powers of the third power input port 103 and the fourth power input port 104 are 70 W and 80 W, respectively, which are greater than P2 / M2 (i.e., 65 W), the power configuration unit 201 configures the remaining third power input port 103 and the fourth power input port 104 to operate at 65 W.

[0108] For another example, when the maximum allowed input power Pmax_in of the portable energy storage device is 200 W, the maximum allowed charging power Pmax_c1_in of the first power input port 101 is 20 W, the maximum allowed charging power Pmax_c2_in of the second power input port 102 is 50 W, the maximum allowed charging power Pmax_c3_in of the third power input port 103 is 65 W, and the maximum allowed charging power Pmax_c4_in of the fourth power input port 104 is 85 W, since Pmax_c1_in+Pmax_c2_in+Pmax_c3_in+Pmax_c4_in is 220 W, which is greater than Pmax_in (i.e., 200 W), the power configuration unit 201 configures the sum of the operating powers of the first power input port 101, the second power input port 102, the third power input port 103, and the fourth power input port 104 to be 200 W.Since the maximum allowed charging power of the first power input port 101 is 20W, which is less than Pmax_in / 4 (i.e. 50W), for this first power input port 101, the power configuration unit 201 performs the first power configuration, and makes the first power input port 101 run at its maximum allowed charging power Pmax_c1_in, i.e. 20W, the total power B1 occupied by the first power input port 101 is 20W, the remaining power P1 that can be configured by the power configuration unit 201 is P1=Pmax_in-B1=200W-20W=180W, and the number of power input ports with remaining unallocated power is M1=4-the number of power input ports running at the maximum allowed charging power in the first configuration=4-1=3. For the remaining 3 power input ports, since the maximum allowed charging power Pmax_c2_in of the second power input port 102 is 50W, which is less than P1 / M1 (i.e. 60W), the power configuration unit 201 performs the second power configuration, and makes the second power input port 102 run at its maximum allowed charging power Pmax_c2_in, i.e. 50W, the total power B2 occupied by the second power input port 102 is 50W, the remaining power P2 that can be configured by the power configuration unit 201 is P2=Pmax_in-B1-B2=130W, and the number of power input ports with remaining unallocated power is M2=M1-the number of power input ports running at the maximum allowed charging power in the second configuration=2. Since the maximum allowed charging power Pmax_c2_in of the third power input port 103 is 65W, which is equal to P2 / M2 (i.e. 65W), the power configuration unit 201 performs the third power configuration, and makes the third power input port 103 run at its maximum allowed charging power Pmax_c3_in, i.e. 65W, the total power B3 occupied by the third power input port 103 is 65W, the remaining power P3 that can be configured by the power configuration unit 201 is P3=Pmax_in-B1-B2-B3=65W, and the number of power input ports with remaining unallocated power is M3=M2-the number of power input ports running at the maximum allowed charging power in the third configuration=1. Since the maximum allowed charging power of the fourth power input port 104 is 85W, which is greater than P3 / M3 (i.e. 65W), the power configuration unit 201 makes the remaining fourth power input port 104 run at 65W.

[0109] When the maximum allowed charging power of two of the power input ports is ≤ Pmax_in / 4, the power configuration unit 201 performs first power configuration for the two power input ports, and the two power input ports run at the maximum allowed charging power. Assuming that the power occupied by the two power input ports is B1, the remaining power that can be configured by the power configuration unit 201 is P1=Pmax_in-B1, and the number of power input ports with remaining unallocated power is M1=4-first number of power input ports running at the maximum allowed charging power=4-2=2. For the remaining two power input ports, if the maximum allowed charging power of each of the two power input ports is greater than P1 / M1, the power configuration unit 201 causes the two power input ports to run at P1 / M1. If the maximum allowed charging power of one of the two power input ports is ≤ P1 / M1, the power configuration unit 201 performs second power configuration for the power input port, and the power input port runs at the maximum allowed charging power. Assuming that the power occupied by the power input port is B2, the remaining power that can be configured by the power configuration unit 201 is P2=Pmax_in-B1-B2. For the remaining one power input port, because the maximum allowed charging power+B1+B2>Pmax_in, the maximum allowed charging power is necessarily greater than Pmax_in-B1-B2 (i.e. necessarily greater than P2), and thus the maximum allowed charging power is greater than P2 / M2. Therefore, the power configuration unit 201 causes the remaining power input port to run at P2 / M2=P2.

[0110] For example, when the maximum allowed input power Pmax_in of the portable energy storage device is 200 W, the maximum allowed charging power Pmax_c1_in of the first power input port 101 is 20 W, the maximum allowed charging power Pmax_c2_in of the second power input port 102 is 30 W, the maximum allowed charging power Pmax_c3_in of the third power input port 103 is 70 W, and the maximum allowed charging power Pmax_c4_in of the fourth power input port 104 is 90 W, since Pmax_c1_in+Pmax_c2_in+Pmax_c3_in+Pmax_c4_in is 210 W, which is greater than Pmax_in, i.e., 200 W, the power configuration unit 201 configures the sum of the operating powers of the first power input port 101, the second power input port 102, the third power input port 103, and the fourth power input port 104 to be 200 W. Since the maximum allowed charging powers of the first power input port 101 and the second power input port 102 are 20 W and 30 W, respectively, which are both less than Pmax_in / 4 (i.e., 50 W), for the first power input port 101 and the second power input port 102, the power configuration unit 201 performs first power configuration, so that the first power input port 101 and the second power input port 102 operate at their maximum allowed charging powers Pmax_c1_in and Pmax_c2_in, i.e., 20 W and 30 W, respectively. The power B1 occupied by the first power input port 101 and the second power input port 102 is 50 W, the remaining power available for configuration by the power configuration unit 201 is P1=Pmax_in-B1=200 W-50 W=150 W, and the number of power input ports with remaining unallocated power is M1=4−the number of power input ports configured to operate at the maximum allowed charging power in the first configuration=4−2=2. For the remaining two power input ports, since the maximum allowed charging power Pmax_c3_in of the third power input port 103 is 70 W, which is less than P1 / M1 (i.e., 75 W), the power configuration unit 201 performs second power configuration, so that the third power input port 103 operates at its maximum allowed charging power Pmax_c3_in, i.e., 70 W. The power B2 occupied by the third power input port 103 is 70 W, the remaining power available for configuration by the power configuration unit 201 is P2=Pmax_in-B1-B2=80 W, and the number of power input ports with remaining unallocated power is M3=M2−the number of power input ports configured to operate at the maximum allowed charging power in the second configuration=1. Since the maximum allowed charging power of the fourth power input port 104 is 90 W, which is greater than P2 / M2 (i.e., 80 W), the power configuration unit 201 configures the remaining fourth power input port 104 to operate at 80 W.

[0111] ③ When the maximum allowed charging power of the three power input ports is ≤Pmax_in / 4, the power configuration unit 201 performs the first power configuration for the three power input ports, so that the three power input ports operate at the maximum allowed charging power. Assuming that the power occupied by the three power input ports is B1, the remaining power that can be configured by the power configuration unit 201 is P1=Pmax_in-B1, and the number of power input ports with the remaining unallocated power is M1=4−the number of power input ports configured to operate at the maximum allowed charging power in the first time=4−3=1, then for the remaining one power input port, because its maximum allowed charging power must be greater than P1, the power configuration unit 201 makes the remaining one power input port operate at P1.

[0112] For example, when the maximum allowed input power Pmax_in of the portable energy storage device is 200 W, the maximum allowed charging power Pmax_c1_in of the first power input port 101 is 20 W, the maximum allowed charging power Pmax_c2_in of the second power input port 102 is 30 W, the maximum allowed charging power Pmax_c3_in of the third power input port 103 is 40 W, and the maximum allowed charging power Pmax_c4_in of the fourth power input port 104 is 120 W, since Pmax_c1_in+Pmax_c2_in+Pmax_c3_in+Pmax_c4_in is 210 W, which is greater than Pmax_in (i.e., 200 W), the power configuration unit 201 configures the sum of the operating powers of the first power input port 101, the second power input port 102, the third power input port 103, and the fourth power input port 104 to be 200 W. Since the maximum allowed charging powers of the first power input port 101, the second power input port 102, and the third power input port 103 are 20 W, 30 W, and 40 W, respectively, which are all less than Pmax_in / 4 (i.e., 50 W), for the first power input port 101, the second power input port 102, and the third power input port 103, the power configuration unit 201 performs the first power configuration, so that the first power input port 101, the second power input port 102, and the third power input port 103 operate at the maximum allowed charging powers Pmax_c1_in, Pmax_c2_in, and Pmax_c3_in, i.e., 20 W, 30 W, and 40 W, respectively. The power B1 occupied by the first power input port 101, the second power input port 102, and the third power input port 103 is 90 W, and the remaining power available for configuration by the power configuration unit 201 is P1=Pmax_in-B1=200 W-90 W=110 W. The number of power input ports with remaining unallocated power is M1=4−the number of power input ports configured to operate at the maximum allowed charging power in the first configuration=4−3=1. For the remaining one power input port, i.e., the fourth power input port 104, since its maximum allowed charging power Pmax_c4_in is 120 W, which is greater than 110 W, the power configuration unit 201 configures the fourth power input port 104 to operate at 110 W.

[0113] The above provides the power distribution rule of the portable energy storage device capable of simultaneous charging of multiple ports provided by the embodiment when the number of power input ports is 3 or 4. Based on the examples of the number of power input ports being 3 and 4, those skilled in the art can further deduce the relevant power distribution rules when the number of power input ports is 5, 6, or even more, which will not be described in detail herein.

[0114] The portable energy storage device capable of charging multiple ports simultaneously provided by the embodiment has the following advantages: first, through the design of at least three power input ports, at least three charging devices can simultaneously charge the portable energy storage device itself, greatly accelerating the charging efficiency; second, the technical solution itself and the realization of the technical effect do not limit the type of power input port, that is, in actual application, the power input port can be various types of input ports, and the types of power input ports can be the same or different from each other, thereby improving the flexibility in actual application, for example, some or all of the power input ports can be bidirectional ports that can both charge and discharge; third, the power input port can be used selectively or simultaneously, when used selectively, by comparing the size relationship between the maximum allowed input power of the energy storage device and the maximum allowed charging power of the port, the energy storage device can realize the maximum charging power input under the premise of ensuring safety; when multiple power input ports are used simultaneously, through the aforementioned power distribution logic, it is ensured that each power input channel can work evenly, avoiding the concentration of internal heat in one part caused by one channel working at high power and other channels working at very small power or not working, thereby improving the safety of the portable energy storage device during charging and prolonging its service life, and this design also enables multiple charging devices to more evenly distribute power, thereby avoiding the charging devices working at full load, thus greatly prolonging the service life of the charging devices.

[0115] Embodiment 3

[0116] The embodiment provides a charging power distribution method of a portable energy storage device, which is applied to the portable energy storage device capable of charging multiple ports simultaneously as described in Embodiment 1. As described in Embodiment 1, the portable energy storage device includes two power input ports and a power configuration unit 201, and the power configuration unit 201 is configured to configure the charging power of the power input port connected to the charging device.

[0117] Each power input port is pre-set with a maximum charging power, and the smaller value between the pre-set maximum charging power of each port and the charging power that can be provided by the charging device after the charging device is inserted into the port is defined as the maximum allowed charging power of the port; and the maximum allowed input power of the portable energy storage device is defined as Pmax_in. The distribution method includes the following steps:

[0118] When the sum of the maximum allowed charging power of the power input port connected to the charging device is less than or equal to Pmax_in, the power configuration unit 201 configures the power input ports to operate at their maximum allowed charging power.

[0119] When the sum of the maximum allowed charging power of the power input ports accessed by the charging device > Pmax_in, the power configuration unit 201 configures the power input ports to have a sum of operating power of Pmax_in, and configures the power according to the following rules:

[0120] If the number of the power input ports accessed by the charging device is 1, the power configuration unit 201 configures the power input port to have an operating power of Pmax_in;

[0121] If the number of the power input ports accessed by the charging device is 2, when the maximum allowed charging power of both power input ports > Pmax_in / 2, the power configuration unit 201 configures both power input ports to have an operating power of Pmax_in / 2; when the maximum allowed charging power of one power input port ≤ Pmax_in / 2, the power configuration unit 201 configures the power input port to have an operating power of its maximum allowed charging power, and configures the other power input port to have an operating power of (Pmax_in - the operating power of the power input port having an operating power of its maximum allowed charging power).

[0122] Embodiment 4

[0123] The embodiment provides a charging power distribution method of a portable energy storage device, and is applied to the portable energy storage device capable of multi-port simultaneous charging in Embodiment 2. As described in Embodiment 2, the portable energy storage device comprises at least three power input ports and a power configuration unit 201, and the power configuration unit 201 is used for configuring the charging power of the power input ports accessed by the charging device.

[0124] Each power input port is pre-set with a maximum charging power, and the smaller value between the pre-set maximum charging power of each port and the charging power that can be provided by the charging device after the charging device is inserted into the port is defined as the maximum allowed charging power of the port. The maximum allowed input power of the portable energy storage device is defined as Pmax_in, and the power distribution method comprises the following steps.

[0125] When the sum of the maximum allowed charging power of the power input ports accessed by the charging device ≤ Pmax_in, the power configuration unit 201 configures the power input ports to have an operating power of its maximum allowed charging power;

[0126] When the sum of the maximum allowed charging power of the power input ports accessed by the charging device > Pmax_in, the power configuration unit 201 configures the power input ports to have a sum of operating power of Pmax_in, and configures the power according to the following rules:

[0127] If the number of power input ports of the charging device is 1, the power configuration unit 201 configures the power input port to run at Pmax_in;

[0128] If the number of power input ports of the charging device is N, N is a positive integer and ≥ 2, then:

[0129] When the maximum allowed charging power of each power input port is greater than Pmax_in / N, the power configuration unit 201 configures the power input ports to run at Pmax_in / N;

[0130] When the maximum allowed charging power of some of the N power input ports is ≤ Pmax_in / N, for these power input ports, the power configuration unit 201 performs the first power configuration, making the power input ports run at the maximum allowed charging power. Assuming that the power consumed by these power input ports is B1, the remaining power that the power configuration unit 201 can configure is P1=Pmax_in-B1, and the number of power input ports that have not been allocated power is M1=N-first number of power input ports configured to run at the maximum allowed charging power, then for the remaining M1 power input ports:

[0131] If the maximum allowed charging power of each of the remaining M1 power input ports is greater than P1 / M1, the power configuration unit 201 makes the remaining M1 power input ports run at P1 / M1;

[0132] If the maximum allowed charging power of some of the power input ports is ≤ P1 / M1, the power configuration unit 201 configures the power according to the following rules. In the following rules, after the power configuration unit 201 performs the kth power configuration, the power consumed by the power input ports configured to run at the maximum allowed charging power in the kth configuration is Bk, the remaining power that the power configuration unit 201 can configure is Pk, and the number of power input ports that have not been allocated power is Mk, k is a positive integer and ≥ 1:

[0133] In the remaining Mk ports, for the power input ports with the maximum allowed charging power ≤ Pk / Mk, the power configuration unit 201 performs the k+1th power configuration, so that the power input ports run at the maximum allowed charging power. Assuming that the power occupied by the power input ports is Bk+1, the remaining power Pk+1 that can be configured by the power configuration unit 201 is Pmax_in-B1-…-Bk+1, and the number of power input ports with the remaining unallocated power Mk+1 is Mk-the number of power input ports configured to run at the maximum allowed charging power in the k+1th configuration. In the rule, when the maximum allowed charging power of the remaining Mk+1 power input ports is greater than Pk+1 / Mk+1 after the k+1th power configuration, the rule is terminated, and the power configuration unit 201 causes the remaining Mk+1 power input ports to run at Pk+1 / Mk+1.

[0134] It should be noted that in the present application, the power allocated to a power input port is the running power of the power input port. For example, when referring to a power input port running at 50W, it means that the power configuration unit allocates 50W to the power input port.

[0135] The specific embodiments of the present application have been described above, and through the above description, relevant personnel can make various changes and modifications without deviating from the technical concept of the present application.

Claims

1. A portable energy storage device capable of simultaneous charging from multiple ports, characterized in that, It includes a power configuration unit and two power input ports. The power configuration unit is used to configure the charging power of the power input ports connected to the charging device; the maximum allowable input power of the energy storage device is defined as Pmax_in. When there are two power input ports connected to the charging device, then: When the sum of the maximum allowable charging power of the two power input ports is less than or equal to Pmax_in, the power configuration unit configures both power input ports to operate at their maximum allowable charging power; when the sum of the maximum allowable charging power of the two power input ports is greater than Pmax_in, the power configuration unit configures the two power input ports to operate at the sum of Pmax_in, and performs power configuration according to the following rules: If the maximum allowable charging power of both power input ports is greater than Pmax_in / 2, the power configuration unit configures both power input ports to operate at Pmax_in / 2. If the maximum allowable charging power of one of the power input ports is less than or equal to Pmax_in / 2, the power configuration unit configures that power input port to operate at its maximum allowable charging power and configures the other power input port to operate at its remaining power, wherein the remaining power = Pmax_in - the operating power of the power input port operating at its maximum allowable charging power.

2. A portable energy storage device capable of simultaneous charging from multiple ports, characterized in that, It includes a power configuration unit and at least three power input ports. The power configuration unit is used to configure the charging power of the power input ports connected to the charging device, and defines the maximum allowable input power of the energy storage device as Pmax_in. When the number of power input ports connected to the charging device is ≥2, then: If the sum of the maximum allowable charging power of these ports is greater than Pmax_in, then the power configuration unit configures these ports to operate at Pmax_in as the sum of their power, and performs power configuration according to the following rules: When the maximum allowable charging power of each port is greater than Pmax_in / N, then the power configuration unit configures these ports to operate at Pmax_in / N; when the maximum allowable charging power of some of these ports is ≤ Pmax_in / N, then for these ports, the power configuration unit performs the first power configuration, making these ports operate at the maximum allowable charging power. Assuming that the total power occupied by these ports is B1, the remaining power that the power configuration unit can configure is P1 = Pmax_in - B1, and the number of ports with remaining unallocated power is M1 = N − the number of ports configured to operate at the maximum allowable charging power in the first configuration, then for the remaining M1 ports: If the maximum allowable charging power of all ports is greater than P1 / M1, the power configuration unit will configure the remaining M1 ports to operate at P1 / M1. If the maximum allowable charging power of some ports is still less than or equal to P1 / M1, the power configuration unit will configure the power according to the following rules. In the following rules, after the power configuration unit performs the k-th power configuration, the total power occupied by the ports operating at the maximum allowable charging power in the k-th configuration is defined as B. k The configurable residual power of the power configuration unit is P. k The number of ports with remaining unallocated power is M. k k is a positive integer and k≥1: The remaining M k Of the ports, for the maximum allowable charging power ≤ P k / M k For each port, the power configuration unit performs the (k+1)th power configuration, causing these ports to operate at the maximum allowable charging power. Assume the total power consumed by these ports is B. k+1 The power configuration unit can configure the remaining power as P. k+1 =Pmax_in-B1-…-B k+1 The number of ports with remaining unallocated power, M k+1 =M k - The number of ports operating at the maximum allowed charging power in the (k+1)th configuration; in this rule, after the (k+1)th power configuration, the remaining M k+1 The maximum allowable charging power of each port is greater than P. k+1 / M k+1 That is, terminating the rule, the power configuration unit makes the remaining M k+1 Each port is P k+1 / M k+1 This refers to the operating power.

3. The portable energy storage device capable of simultaneous charging from multiple ports according to claim 2, characterized in that, When the number of power input ports connected to the charging device is ≥2, if the sum of the maximum allowable charging power of these ports is ≤Pmax_in, then the power configuration unit configures these ports to operate at their maximum allowable charging power.

4. The portable energy storage device capable of simultaneous charging from multiple ports according to claim 1 or 2, characterized in that, Each of the power input ports is preset with a maximum charging power. The smaller of the preset maximum charging power of each port and the charging power that the charging device can provide after the charging device is inserted into the port is the maximum allowable charging power of the port.

5. The portable energy storage device capable of simultaneous charging from multiple ports according to claim 1 or 2, characterized in that, Some or all of the power input ports are bidirectional ports that can be used for both charging and discharging.

6. The portable energy storage device capable of simultaneous charging at multiple ports according to claim 1 or 2, characterized in that, The portable energy storage device has a main control board and one or more independent circuit boards connected to the main control board. The power input port is located on the circuit board, and the power configuration unit is located on the main control board.

7. The portable energy storage device capable of simultaneous charging from multiple ports according to claim 6, characterized in that, The power configuration unit reads preset parameters from the power input ports, calculates the real-time power demand of each power input port, and configures the charging power of each power input port accordingly. The preset parameters include current and voltage.

8. The portable energy storage device capable of simultaneous charging from multiple ports according to claim 6, characterized in that, Both the circuit board and the main control board are equipped with protection circuits, which include any one or more of the following: overcurrent protection circuit, overvoltage protection circuit, overtemperature protection circuit, and short circuit protection circuit. When an abnormal situation is detected, the protection circuit responds and cuts off the power supply to the relevant circuit.

9. A method for distributing charging power in a portable energy storage device, characterized in that, The method, applied to the portable energy storage device capable of simultaneous charging from multiple ports as described in claim 1, comprises: When there are two power input ports connected to the charging device, then: When the sum of the maximum allowable charging power of the two power input ports is less than or equal to Pmax_in, the power configuration unit configures both power input ports to operate at their maximum allowable charging power; when the sum of the maximum allowable charging power of the two power input ports is greater than Pmax_in, the power configuration unit configures the two power input ports to operate at the sum of Pmax_in, and performs power configuration according to the following rules: If the maximum allowable charging power of both power input ports is greater than Pmax_in / 2, the power configuration unit configures both power input ports to operate at Pmax_in / 2. If the maximum allowable charging power of one of the power input ports is less than or equal to Pmax_in / 2, the power configuration unit configures that power input port to operate at its maximum allowable charging power and configures the other power input port to operate at its remaining power, wherein the remaining power = Pmax_in - the operating power of the power input port operating at its maximum allowable charging power.

10. A method for distributing charging power in a portable energy storage device, characterized in that, The method, applied to the portable energy storage device capable of simultaneous charging from multiple ports as described in claim 2, comprises: When the number of power input ports connected to the charging device is ≥2, then: If the sum of the maximum allowable charging power of these ports is greater than Pmax_in, then the power configuration unit configures these ports to operate at Pmax_in as the sum of their power, and performs power configuration according to the following rules: When the maximum allowable charging power of each port is greater than Pmax_in / N, then the power configuration unit configures these ports to operate at Pmax_in / N; when the maximum allowable charging power of some of these ports is ≤ Pmax_in / N, then for these ports, the power configuration unit performs the first power configuration, making these ports operate at the maximum allowable charging power. Assuming that the total power occupied by these ports is B1, the remaining power that the power configuration unit can configure is P1 = Pmax_in - B1, and the number of ports with remaining unallocated power is M1 = N − the number of ports configured to operate at the maximum allowable charging power in the first configuration, then for the remaining M1 ports: If the maximum allowable charging power of all ports is greater than P1 / M1, the power configuration unit will configure the remaining M1 ports to operate at P1 / M1. If the maximum allowable charging power of some ports is still less than or equal to P1 / M1, the power configuration unit will configure the power according to the following rules. In the following rules, after the power configuration unit performs the k-th power configuration, the total power occupied by the ports operating at the maximum allowable charging power in the k-th configuration is defined as B. k The configurable residual power of the power configuration unit is P. k The number of ports with remaining unallocated power is M. k k is a positive integer and k≥1: The remaining M k Of the ports, for the maximum allowable charging power ≤ P k / M k For each port, the power configuration unit performs the (k+1)th power configuration, causing these ports to operate at the maximum allowable charging power. Assume the total power consumed by these ports is B. k+1 The power configuration unit can configure the remaining power as P. k+1 =Pmax_in-B1-…-B k+1 The number of ports with remaining unallocated power, M k+1 =M k - The number of ports operating at the maximum allowed charging power in the (k+1)th configuration; in this rule, after the (k+1)th power configuration, the remaining M k+1 The maximum allowable charging power of each port is greater than P. k+1 / M k+1 That is, terminating the rule, the power configuration unit makes the remaining M k+1 Each port is P k+1 / M k+1 This refers to the operating power.

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