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

Abstract

The present invention provides a portable energy storage device capable of discharging simultaneously through multiple ports and a power distribution method. The energy storage device has multiple charging output ports, and all or part of these ports have different power distribution priorities which are preset in advance, so that when the user uses the energy storage device, the priority order of multiple power-receiving devices can be determined according to the actual requirements; moreover, the present invention can ensure that when there are power-receiving devices connected to all the multiple charging output ports and the sum of the required powers of the power-receiving devices is greater than the maximum power that the device can provide, all the ports can operate at the set minimum power, and if there is remaining power, the remaining power preferentially satisfies the charging output ports with higher priorities. Further, when the number of charging output ports to which the power-receiving devices are connected changes, the device redistributes the power, thereby achieving the effect of dynamically adjusting the power and enabling the device to work at its maximum output power as much as possible.

Description

Technical Field

[0001] The present invention relates to the technical field of mobile power supplies, and in particular, to a portable energy storage device capable of discharging simultaneously through multiple ports, and a power distribution method applied to the portable energy storage device. Background Art

[0002] With the popularization of mobile devices and the increase in people's outdoor activities, the demand for portable energy storage devices is increasing day by day. Whether it is for outdoor camping, emergency power supply needs, or daily charging of mobile devices, a mobile energy storage device that can provide reliable power has become an indispensable tool.

[0003] The portable energy storage devices in the prior art have developed a design with multiple charging output ports, and each charging output port can be connected to an electronic device to charge the electronic device. However, for such portable energy storage devices, the power of each charging output port is either fixed. For example, for 3 charging output ports, the output power of each charging output port is limited to 50W. When only 1 charging output port is working, it can only work at an output power of 50W, resulting in the inability to achieve the maximum for single-channel output; or it supports the maximum power output of a certain output port through a complex power distribution logic, but the operation is complex and the user experience is poor.

[0004] For example, the prior Chinese patent application CN112671055B requests protection for a power distribution method and a charging device, which distributes power to each output port according to the order in which each output port connects to the access device and the required power of each access device. Paragraphs 0080 to 0085 of its specification record the specific process of distributing power to the first output port, the second output port, and the third output port according to the order of connecting the access devices. Briefly: assume that the total power that the charging device can provide is 100W. When the first device occupies 60W of power through the first output port, the remaining power of the charging device is 40W. When a second device is connected to the second output port, if the maximum charging power of the second device is 100W, because it is greater than the remaining power of 40W, the second device charges at a power of 40W; when a third device is connected to the third output port, assume that the maximum charging power of the third device is 150W and the minimum charging power is 15W. Since the total power of 100W has been distributed to the first output port and the second output port, the minimum charging power of 15W of the third device is first satisfied, and the power of the first device and the second device is reduced.

[0005] Therefore, it is obvious that Chinese Patent CN112671055B determines the priority of power distribution based on the order in which electronic devices are connected to the charging device. That is, for an electronic device that is connected to the charging device earlier, the power it requires is given priority consideration and satisfied. This results in that when the user hopes that a later-connected device is given priority consideration, they need to unplug all the electronic devices that are currently charging to reorder the priorities. This is a kind of damage to both the charging device and the electronic devices, and also leads to a poor user operation experience. Summary of the Invention

[0006] Aiming at the defects in the prior art, the purpose of the present invention is to provide a portable energy storage device capable of simultaneous multi-port discharging, and a power distribution method applied to the portable energy storage device. By pre-determining the priorities of multiple charging output ports, when the user uses it, they can select a charging output port of a certain priority according to actual needs, so as to pre-reasonably layout the connection relationship between the electronic devices to be charged and the charging output ports.

[0007] To achieve the above-mentioned invention purpose, the present invention provides the following technical solutions:

[0008] According to a first aspect of the present invention, there is provided a portable energy storage device capable of simultaneous multi-port discharging, including a power configuration unit and at least two charging output ports. The power configuration unit is used to allocate power to the charging output ports connected to the power-receiving devices. Each charging output port is pre-configured with the priority of power distribution and the minimum and maximum output powers; define the maximum total output power of the energy storage device as Pmax_out, the number of charging output ports connected to the power-receiving devices as Y, and define these ports as the first to the Yth charging output ports in order of priority from high to low, their minimum output powers as Pmin_c1 to Pmin_cY, and the smaller value between their maximum output power and the load request power as the first to the Yth preset powers; when Y≥2 and these Y charging output ports have different priorities, then:

[0009] If (Pmin_c1 + … + Pmin_cY) < Pmax_out < (the first preset power + … + the Yth preset power), the power configuration unit first satisfies the minimum output powers of these ports, and then sequentially distributes the remaining power in order of priority. Define the initial amount of the remaining power as P 0_out , and the remaining power distribution rule is:

[0010] When performing the first round of remaining power distribution, the power configuration unit uses (Pmin_c1 + the remaining power P 0_outThe smaller value between ( ) and the first preset power is the total power obtained by allocating to the first charging output port. After defining the remaining power allocation in the first round, the remaining power obtained by the first charging output port is defined as C1, and C1 = the total power obtained by allocating to the first charging output port - Pmin_c1. After defining the remaining power allocation in the first round, the remaining remaining power is defined as P 1_out , P 1_out =P 0_out -C1. If P 1_out =0, the power allocation ends; if P 1_out >0, continue the remaining power allocation according to the following rules until the remaining remaining power P k_out =0, thus ending the power allocation: When performing the remaining power allocation in the k-th round, the power configuration unit uses the smaller value between (Pmin_ck + the remaining power P k-1_out ) and the k-th preset power as the total power obtained by allocating to the k-th charging output port. After defining the remaining power allocation in the k-th round, the remaining power obtained by the k-th charging output port is defined as C k , C k = the total power obtained by allocating to the k-th charging output port - Pmin_ck. After defining the remaining power allocation in the k-th round, the remaining remaining power is defined as P k_out , P k_out =P 0_out -C1 - … - C k , where k is a positive integer and k ≥ 2.

[0011] Preferably, when Y ≥ 2 and these Y charging output ports all have the same lowest priority, then: If Pmax_out < the sum of the preset powers of these ports, the power configuration unit first satisfies the minimum output power of these ports, and then evenly distributes the remaining power.

[0012] Preferably, when Y ≥ 3 and among these Y charging output ports, there are x ports with the same lowest priority and the remaining Y - x ports have different priorities, where 2 ≤ x < Y, then:

[0013] If (Pmin_c1 + … + Pmin_cY) < Pmax_out < (the first preset power + … + the Y-th preset power), the power configuration unit first satisfies the minimum output power of these charging ports, and then sequentially distributes the remaining power according to the priority order. Define the initial amount of the remaining power as P 0_out , and the allocation rule is:

[0014] When performing the remaining power allocation in the first round, the power configuration unit uses (Pmin_c1 + the remaining power P 0_outThe smaller value between the two is the total power obtained by allocating to the first charging output port. After defining the remaining power allocation in the first round, the remaining power obtained by the first charging output port is defined as C1, and C1 = the total power obtained by allocating to the first charging output port - Pmin_c1. After defining the remaining power allocation in the first round, the remaining remaining power is defined as P 1_out , P 1_out = P 0_out - C1. If P 1_out = 0, the power allocation ends; if P 1_out > 0 and at this time only x charging output ports have not been allocated the remaining power, the power configuration unit will evenly allocate the remaining power P 1_out to these x charging output ports, and the power allocation ends; if P 1_out > 0 and the number of charging output ports that have not been allocated the remaining power > x, the power configuration unit continues to allocate according to the following remaining power allocation rules until condition one or condition two is met:

[0015] The remaining power allocation rule is: in the k-th round of remaining power allocation, the power configuration unit allocates the total power obtained by taking the smaller value between (Pmin_ck + the remaining power P k-1_out ) and the k-th preset power to the k-th charging output port. After defining the remaining power allocation in the k-th round, the remaining power obtained by the k-th charging output port is defined as C k and the remaining remaining power is defined as P k_out , C k = the total power obtained by allocating to the k-th charging output port - Pmin_ck, P k_out = P 0_out - C1 - … - C k ;

[0016] The condition one is: the remaining remaining power P k_out is 0; the condition two is: the remaining remaining power P k_out > 0 and at this time only x charging output ports have not been allocated the remaining power; if the first reached is condition one, the power allocation ends; if the first reached is condition two, the remaining power P k_out is evenly allocated to the remaining x charging output ports, and the power allocation ends, where k is a positive integer and k ≥ 2.

[0017] Preferably, if Pmax_out = (Pmin_c1 + … + Pmin_cY), the power configuration unit allocates the corresponding minimum output power to each charging output port connected to the power receiving device; if Pmax_out ≥ (the first preset power + … + the Y-th preset power), the power configuration unit allocates the corresponding preset power to each charging output port connected to the power receiving device.

[0018] Preferably, when Y = 1, the power configuration unit distributes power based on the smaller value between the maximum output power of the charging output port and the load-requested power.

[0019] Preferably, 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 charging output ports are provided on the circuit boards, and the power configuration unit is provided on the main control board.

[0020] Preferably, the power configuration unit calculates the real-time power requirements of each charging output port by reading the preset parameters of the charging output port and configures the discharge power of each charging output port accordingly. The preset parameters include current and voltage.

[0021] Preferably, protection circuits are provided on both the circuit board and the main control board. The protection circuit includes any one or more of an overcurrent protection circuit, an overvoltage protection circuit, an overtemperature protection circuit, and a short-circuit protection circuit. When an abnormal situation is detected, the protection circuit responds and cuts off the power supply of the relevant circuit.

[0022] According to the second aspect of the present invention, there is provided a power distribution method for a portable energy storage device, which is applied to the portable energy storage device described in the first aspect of the present invention. The method includes:

[0023] When the number Y of charging output ports connected to the power receiving device is ≥ 2 and the Y charging output ports have different priorities, then: if (Pmin_c1 + … + Pmin_cY) < Pmax_out < (the first preset power + … + the Yth preset power), the power configuration unit first satisfies the minimum output power of these charging output ports, and then sequentially distributes the remaining power in the order of priority. Define the initial amount of the remaining power as P 0_out , and the distribution rule is:

[0024] In the first round of remaining power distribution, the power configuration unit distributes the total power obtained for the first charging output port based on the smaller value between (Pmin_c1 + the remaining power P 0_out ) and the first preset power. Define that after the first round of remaining power distribution, the remaining power obtained by the first charging output port is C1, C1 = the total power obtained by the first charging output port - Pmin_c1. Define the remaining remaining power after the first round of remaining power distribution as P 1_out , P 1_out = P 0_out - C1. If P 1_out = 0, the power distribution ends; if P 1_out > 0, continue the remaining power distribution according to the following rules until the remaining remaining power P k_out=0 This ends the power distribution: during the remaining power distribution in the k-th round, the power configuration unit allocates the total power obtained to the k-th charging output port with the smaller value of (Pmin_ck + remaining power P k-1_out ) and the k-th preset power. After the remaining power distribution in the k-th round, the remaining power obtained by the k-th charging output port is defined as C k , C k = the total power allocated to the k-th charging output port - Pmin_ck. After the remaining power distribution in the k-th round, the remaining remaining power is defined as P k_out , P k_out = P 0_out - C1 - … - C k , where k is a positive integer and k ≥ 2.

[0025] Preferably, when the number of charging output ports Y connected to the power receiving device is ≥ 2 and these Y charging output ports all have the same lowest priority, then: if Pmax_out < the sum of the preset powers of these charging output ports, the power configuration unit first satisfies the minimum output power of these charging output ports, and then evenly distributes the remaining power;

[0026] When the number of charging output ports Y connected to the power receiving device is ≥ 3 and there are x ports with the same lowest priority among these Y charging output ports and the remaining Y - x ports have different priorities, where 2 ≤ x < Y, then: if (Pmin_c1 + … + Pmin_cY) < Pmax_out < (the first preset power + … + the Y-th preset power), the power configuration unit first satisfies the minimum output power of these charging output ports, and then distributes the remaining power in order of priority. The initial amount of the remaining power is defined as P 0_out , and the distribution rule is:

[0027] During the first round of remaining power distribution, the power configuration unit allocates the total power obtained to the first charging output port with the smaller value of (Pmin_c1 + remaining power P 0_out ) and the first preset power. After the first round of remaining power distribution, the remaining power obtained by the first charging output port is defined as C1, C1 = the total power allocated to the first charging output port - Pmin_c1. After the first round of remaining power distribution, the remaining remaining power is defined as P 1_out , P 1_out = P 0_out - C1. If P 1_out = 0, the power distribution ends; if P 1_out > 0 and at this time only x charging output ports have not been allocated the remaining power, the power configuration unit evenly distributes the remaining power P 1_out to these x charging output ports, and the power distribution ends; if P 1_outIf the number of charging output ports > 0 and the remaining power has not been allocated, and the number of such ports > x, then the power configuration unit continues to allocate power according to the following remaining power allocation rules until condition 1 or condition 2 is met:

[0028] The remaining power allocation rule is: in the k-th round of remaining power allocation, the power configuration unit allocates the total power obtained by the k-th charging output port with the smaller value of (Pmin_ck + remaining power P k-1_out ) and the k-th preset power. After the k-th round of remaining power allocation, the remaining power obtained by the k-th charging output port is defined as C k , C k = the total power allocated to the k-th charging output port - Pmin_ck. After the k-th round of remaining power allocation, the remaining remaining power is defined as P k_out , P k_out = P 0_out - C1 - … - C k ;

[0029] Condition 1 is: the remaining remaining power P k_out is 0; Condition 2 is: the remaining remaining power P k_out > 0 and at this time only x charging output ports have not been allocated the remaining power; if condition 1 is reached first, the power allocation ends; if condition 2 is reached first, the remaining power P k_out is evenly distributed to the remaining x charging output ports, and the power allocation ends, where k is a positive integer and k ≥ 2.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] 1. The portable energy storage device and power allocation method provided by the present invention can ensure that when there are power receiving devices at multiple charging output ports and the sum of the required powers of the power receiving devices is greater than the maximum power that the energy storage device can provide, all ports can operate at the set minimum power.

[0032] 2. The portable energy storage device and power allocation method provided by the present invention, when multiple charging output ports are connected to power receiving devices and power is configured according to the set rules, if during operation, the power receiving device at a certain charging output port is removed, causing a change in the number of charging output ports connected to the power receiving devices, then the power is reallocated according to the set rules based on the number of charging output ports currently connected to the power receiving devices, so that the power released due to the removal of the power receiving device at a certain port can be allocated to the ports where the power receiving devices have not been removed, thereby enabling the portable energy storage device to output at the maximum power it can provide as much as possible and achieving the effect of dynamic adjustment.

[0033] 3. The portable energy storage device and power distribution method provided by the present invention have all or part of the charging output ports with different priorities, and the priorities are preset in advance. Therefore, when the user uses the device, the user can determine the priority order of multiple powered devices according to the actual requirements, which is convenient to use and easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Other features, objects, and advantages of the present invention will become more apparent by reading the detailed description of the non-limiting embodiments with reference to the following drawings:

[0035] Figure 1 It is a schematic structural diagram of the portable energy storage device according to the first embodiment of the present invention, and the number of charging output ports in this figure is 2;

[0036] Figure 2 It is a schematic structural diagram of the portable energy storage device according to the second embodiment of the present invention, and the number of charging output ports in this figure is 3;

[0037] Figure 3 It is a schematic structural diagram of the portable energy storage device according to the second embodiment of the present invention, and the number of charging output ports in this figure is 4.

[0038] As shown in the figure:

[0039] 301 - First charging output port;

[0040] 302 - Second charging output port;

[0041] 303 - Third charging output port;

[0042] 304 - Fourth charging output port;

[0043] 201 - Power configuration unit DETAILED DESCRIPTION OF THE EMBODIMENTS

[0044] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. Components of the embodiments of the present application described and illustrated herein can generally be arranged and designed in a variety of different configurations.

[0045] Therefore, the detailed description of the embodiments of the present application provided in the drawings below is not intended to limit the scope of the present application that is claimed, but merely represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts fall within the scope of protection of the present application.

[0046] It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. In addition, all directional indications (such as up, down, left, right, front, back, bottom, etc.) in this application are only used to explain the relative positional relationship, movement conditions, etc. between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly. Further, the descriptions involving "first", "second", etc. in the application are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features.

[0047] In addition, in the present invention, for the use of terms such as "these", "sum", "all", etc., it is not required that the number of charging output ports must be 2 or more, and it also includes the case where the number of charging output ports is 1. When the number of charging output ports is 1, "these charging output ports" refers to "the one charging output port", and "the sum of the preset powers of these charging output ports" refers to "the preset power of the one charging output port". Further, in the present invention, when the two values of A and B are equal, either of them is regarded as the smaller value. Therefore, the so-called "using the smaller value of A and B as the allocated power" in the present invention includes the case where A and B are equal and either A or B can be taken as the smaller value.

[0048] Embodiment 1

[0049] This embodiment provides a portable energy storage device capable of discharging simultaneously through multiple ports. Structurally, the energy storage device is made of a lightweight and high-strength housing material as a whole. Inside, there is one or more independent circuit boards. The circuit boards are provided with a power input port and charging output ports, and the circuit boards are connected to the main control board through wires. An intelligent control chip is embedded on the main control board, and the chip includes a power configuration unit 201 for executing a power distribution algorithm. The power configuration unit 201 calculates the real-time power requirements of each port by reading parameters such as current and voltage of each port, and adjusts the charging and discharging powers of each port accordingly. In addition, overcurrent protection, overvoltage protection, overtemperature protection, short-circuit protection and other circuit elements are provided on both the circuit board 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 relevant circuit. Since the core of this embodiment lies in the power distribution logic of the energy storage device in the only discharge mode, it is specifically described as follows:

[0050] The portable energy storage device capable of discharging simultaneously through multiple ports provided in this embodiment includes at least two charging output ports and a power configuration unit 201. The power configuration unit 201 is used to allocate power to the charging output ports connected to the power receiving devices (it can be understood that when a certain charging output port is not connected to a power receiving device, no power will be allocated to its charging output port). The power receiving device in the present invention refers to the device to be charged, such as a mobile phone, a camera, etc.

[0051] The charging output ports are pre-set with a priority order for power allocation. For the charging output ports with a higher priority, when the power configuration unit 201 performs power allocation, it will first consider meeting the required power of this charging output port. Each charging output port is pre-set with a minimum output power and a maximum output power. The so-called minimum output power refers to the minimum power that the power configuration unit will allocate to this port, and the maximum output power refers to the maximum power that the power configuration unit will allocate to this port.

[0052] Define the maximum total output power of the portable energy storage device provided in this embodiment as Pmax_out (in this application, the sum of the pre-configured minimum output powers of the charging output ports ≤ Pmax_out, and the minimum output power of each charging output port ≤ the maximum output power of this port, and the maximum output power of each charging output port ≤ Pmax_out). Define the number of charging output ports connected to the power receiving device as Y (it can be understood that the value of Y must necessarily ≤ the number of charging output ports of the portable energy storage device).

[0053] When Y = 1, that is, when only one charging output port is connected to the power receiving device, the power configuration unit 201 takes the smaller value between the maximum output power of this charging output port and the load request power as the power that this port will be allocated (for the convenience of expression, in some expressions of the present invention, the power that a certain port will be allocated is simply referred to as the allocated power of a certain port). The so-called load request power refers to the power required by the power receiving device as a load during normal operation. The load request power will vary depending on the different power receiving devices connected.

[0054] Specifically, if the load request power of this charging output port > the maximum output power of this port, then this port broadcasts the maximum power supported by this port (i.e., the maximum output power), and the power configuration unit 201 takes the maximum output power of this port as the allocated power of this port; if the load request power of this port < the maximum output power of this port, then the power configuration unit 201 takes the load request power of this port as the allocated power of this port; if the load request power of this port = the maximum output power of this port, then the power configuration unit 201 takes the load request power or the maximum output power of this port as the allocated power of this port.

[0055] When Y≥2 and the Y charging output ports have different priorities:

[0056] Sorted from the highest to the lowest priority, the charging output ports are sequentially defined as the first charging output port to the Y-th charging output port, and their minimum output powers are sequentially defined as Pmin_c1 to Pmin_cY, and the smaller values among their maximum output powers and the load request powers are sequentially defined as the first preset power to the Y-th preset power.

[0057] If Pmax_out=(Pmin_c1+…+Pmin_cY), that is, the maximum total output power of the portable energy storage device = the sum of the minimum output powers of the charging output ports of the connected power receiving devices, then the power configuration unit allocates the corresponding minimum output power to each charging output port connected to the power receiving device.

[0058] If Pmax_out≥(the first preset power+…+the Y-th preset power), that is, the maximum total output power of the portable energy storage device = the sum of the preset powers of the charging output ports of the connected power receiving devices, then the power configuration unit allocates the corresponding preset power to each charging output port connected to the power receiving device.

[0059] If (Pmin_c1+…+Pmin_cY)<Pmax_out<(the first preset power+…+the Y-th preset power), then the power configuration unit 201 first satisfies the minimum output powers of these charging output ports (that is, first allocates the corresponding minimum output power to each charging output port connected to the power receiving device), and then sequentially allocates the remaining power in the order of priority. Define the initial amount of the remaining power as P 0_out , P 0_out =Pmax_out-(Pmin_c1+…+Pmin_cY). The allocation rule of the remaining power is:

[0060] When performing the first round of remaining power allocation, the power configuration unit 201 allocates the total power obtained by the first charging output port 301 with the smaller value between (Pmin_c1+the remaining power P 0_out ) and the first preset power. Define that after the first round of remaining power allocation, the remaining power obtained by the first charging output port 301 is C1, C1 = the total power allocated to the first charging output port 301 - Pmin_c1. Define the remaining remaining power after the first round of remaining power allocation as P 1_out , P 1_out =P 0_out -C1. If P 1_out =0, the power allocation ends; if P 1_out >0, continue to perform the remaining power allocation according to the following rules until the remaining remaining power P k_outIt is 0, thus ending the power distribution. When performing the remaining power distribution in the k-th round, the power configuration unit 20 allocates the total power obtained for the k-th charging output port with the smaller value of (Pmin_ck + remaining power P k-1_out ) and the k-th preset power. After the remaining power distribution in the k-th round, define the remaining power obtained by the k-th charging output port as C k , C k = the total power allocated to the k-th charging output port - Pmin_ck. Define the remaining remaining power after the remaining power distribution in the k-th round as P k_out , P k_out = P0 - C1 - … - C k , where k is a positive integer and k ≥ 2.

[0061] It can be understood that when Y = 2, that is, when two charging output ports with different priorities are connected to the power receiving device, as Figure 1 shown, sort them in descending order of priority, and sequentially define these two charging output ports as the first charging output port 301 and the second charging output port 302, and sequentially define their minimum output powers as Pmin_c1 and Pmin_c2 respectively, and the smaller values of their maximum output power and the load request power as the first preset power and the second preset power respectively.

[0062] If Pmax_out = (Pmin_c1 + Pmin_c2), then the power configuration unit allocates Pmin_c1 to the first charging output port and Pmin_c2 to the second charging output port.

[0063] If Pmax_out ≥ (the first preset power + the second preset power), then the power configuration unit allocates the first preset power to the first charging output port and the second preset power to the second charging output port.

[0064] If (Pmin_c1 + Pmin_c2) < Pmax_out < (the first preset power + the second preset power), then the power configuration unit 20 first satisfies the minimum output powers of the first charging output port 301 and the second charging output port 302 (that is, first allocates Pmin_c1 to the first charging output port and Pmin_c2 to the second charging output port), and then sequentially distributes the remaining power in the order of priority. Define the initial amount of the remaining power as P 0_out , P 0_out = Pmax_out - (Pmin_c1 + Pmin_c2), and the distribution rule is:

[0065] When performing the first round of remaining power distribution, the power configuration unit 20 uses (Pmin_c1 + remaining power P 0_outThe smaller value between ( ) and the first preset power is the total power allocated to the first charging output port 301. After the remaining power is allocated in the first round, the remaining power C1 obtained by the first charging output port 301 = the total power allocated to the first charging output port 301 - Pmin_c1. After the remaining power is allocated in the first round, the remaining remaining power P 1_out = P 0_out - C1. If P 1_out = 0, the power allocation ends, which means that the total power allocated to the first charging output port 301 is (Pmin_c1 + the remaining power P 0_out ), and the total power allocated to the second charging output port 302 is its minimum output power.

[0066] If P 1_out > 0, it indicates that the first charging output port 301 has reached the first preset power and there is still room for the remaining power to be further allocated to the second charging output port 302. Therefore, the second round of remaining power allocation is carried out. At this time, the power configuration unit 201 uses the smaller value between (Pmin_c2 + the remaining power P 1_out ) and the second preset power as the total power allocated to the second charging output port. It can be understood that because Pmax_out < (the first preset power + the second preset power), so (Pmin_c2 + the remaining power P 1_out ) must be less than the second preset power. Therefore, the power configuration unit 201 directly allocates the remaining power P 1_out to the second charging output port 302 so that the second charging output port 302 can use (Pmin_c2 + the remaining power P 1_out ) as the total power allocated. Because after the second round of remaining power allocation, the remaining power C2 obtained by the second charging output port 302 = the total power allocated to the second charging output port 302 - Pmin_c2 = the remaining power P 1_out , after the second round of remaining power allocation, the remaining remaining power P 2_out = P 0_out - C1 - C2 = 0, and the power allocation ends. This means that the total power allocated to the first charging output port 301 is the first preset power, and the total power allocated to the second charging output port 302 is (Pmin_c2 + the remaining power P 1_out ).

[0067] Correspondingly, as Figure 2As shown, when Y = 3, that is, when three charging output ports with different priorities are connected to the powered device, they are sorted from high to low in priority. The charging output ports are sequentially defined as the first charging output port 301, the second charging output port 302, and the third charging output port 303. And their minimum output powers are sequentially defined as Pmin_c1, Pmin_c2, and Pmin_c3, and the smaller values among their maximum output powers and the load request power are respectively the first preset power, the second preset power, and the third preset power.

[0068] If Pmax_out = (Pmin_c1 + Pmin_c2 + Pmin_c3), then the power configuration unit allocates Pmin_c1 to the first charging output port, allocates Pmin_c2 to the second charging output port, and allocates Pmin_c3 to the third charging output port.

[0069] If Pmax_out ≥ (the first preset power + the second preset power + the third preset power), then the power configuration unit allocates the first preset power to the first charging output port, allocates the second preset power to the second charging output port, and allocates the third preset power to the third charging output port.

[0070] If (Pmin_c1 + Pmin_c2 + Pmin_c3) < Pmax_out < (the first preset power + the second preset power + the third preset power), then the power configuration unit 201 first satisfies the minimum output powers of these charging output ports (that is, the power configuration unit 201 first allocates their corresponding minimum output powers to these charging output ports), and then sequentially distributes the remaining power in the order of priority. Define the initial amount of the remaining power as P 0_out ,P 0_out = Pmax_out - (Pmin_c1 + Pmin_c2 + Pmin_c3). The allocation rule is:

[0071] When performing the first round of remaining power distribution, the power configuration unit 201 allocates the total power obtained by taking the smaller value between (Pmin_c1 + the remaining power P 0_out ) and the first preset power to the first charging output port 301. After the first round of remaining power distribution, the remaining power C1 obtained by the first charging output port 301 = the total power allocated to the first charging output port 301 - Pmin_c1. After the first round of remaining power distribution, the remaining remaining power P 1_out = P 0_out - C1. If P 1_out = 0, then the power distribution ends, which means that the total power allocated to the first charging output port 301 is (Pmin_c1 + the remaining power P 0_out), the total power obtained by the second charging output port 302 and the third charging output port 303 is their minimum output power respectively.

[0072] If P 1_out > 0, it indicates that the first charging output port 301 has reached the first preset power and there is still surplus power that can be further allocated to the second charging output port 302. Therefore, the second round of surplus power allocation is carried out. At this time, the power configuration unit 201 takes the smaller value of (Pmin_c2 + surplus power P 1_out ) and the second preset power as the total power obtained by the second charging output port 302. After the second round of surplus power allocation, the surplus power C2 obtained by the second charging output port 302 = the total power obtained by the second charging output port 302 - Pmin_c2. After the second round of surplus power allocation, the remaining surplus power P 2_out = P 0_out - C1 - C2. If P 2_out = 0, the power allocation ends, which means that the total power obtained by the first charging output port 301 is the first preset power, the total power obtained by the second charging output port 302 is (Pmin_c2 + surplus power P 1_out ), and the total power obtained by the third charging output port 303 is the minimum output power.

[0073] If P 2_out > 0, it indicates that the second charging output port 302 has reached the second preset power and there is still surplus power that can be further allocated to the third charging output port 303. Therefore, the third round of surplus power allocation is carried out. At this time, the power configuration unit 201 takes the smaller value of (Pmin_c3 + surplus power P 2_out ) and the third preset power as the total power obtained by the third charging output port 303. It can be understood that because Pmax_out < (the first preset power + the second preset power + the second preset power), so (Pmin_c3 + surplus power P 2_out ) must be less than the third preset power. Therefore, the power configuration unit 201 directly allocates the surplus power P 2_out to the third charging output port 303 so that the total power allocated to the third charging output port 303 is (Pmin_c3 + surplus power P 2_out ). Because after the third round of surplus power allocation, the surplus power C3 obtained by the third charging output port 303 = the total power obtained by the third charging output port 303 - Pmin_c3 = surplus power P 3_out . After the third round of surplus power allocation, the remaining surplus power P 3_out = P 0_out-C1-C2-C3 = 0, the remaining power distribution ends, which means that the total power obtained by the first charging output port 301 is the first preset power, the total power obtained by the second charging output port 302 is the second preset power, and the total power obtained by the third charging output port 303 is (Pmin_c3 + the remaining power P 2_out ).

[0074] When Y is other values, those skilled in the art can deduce the corresponding power distribution situation based on the above records of this embodiment.

[0075] The portable energy storage device provided by this embodiment can ensure that when there are power receiving devices on multiple charging output ports and the sum of the required powers of the power receiving devices is greater than the maximum power that the energy storage device can provide, all ports can work at the set minimum power. Further, when multiple charging output ports are connected to power receiving devices and power is distributed according to the above rules, if during operation, the power receiving device on a certain charging output port is removed, causing a change in the number of charging output ports connected to the power receiving devices, then the power is redistributed according to the above rules based on the number of charging output ports currently connected to the power receiving devices, so that the power released due to the removal of the power receiving device on a certain port can be distributed to the ports of the non-removed power receiving devices, thereby enabling the portable energy storage device to output at the maximum power it can provide as much as possible and achieving the effect of dynamic adjustment. Moreover, for the portable energy storage device provided by this embodiment, the charging output ports have different priorities and the priorities are set in advance. Therefore, when the user uses it, they can determine the priority order of multiple power receiving devices according to the actual requirements, which is convenient to use and easy to operate.

[0076] It should be particularly noted that, as mentioned above, the so-called minimum output power and maximum output power in this embodiment refer to the minimum power and maximum power that the power configuration unit will allocate to the corresponding ports. It can be understood that when a power receiving device is connected to a certain charging output port and the load request power of this power receiving device is 15W, while the minimum output power of this charging output port is 20W, then when the power configuration unit allocates power, it will at least meet the minimum output power of this port, that is, at least 20W will be allocated to this charging output port. Since the load request power is 15W, the operating power of this charging output port is 15W, and the extra 5W will not be further allocated to other ports. This design thus realizes the "can ensure that all ports can work at the set minimum power" mentioned above. This design is different from the related solutions in the prior art that use the minimum allowable operating power of the power receiving device as the minimum allocation power, and can enable the device to operate more stably and the power distribution to be more reasonable.

[0077] The following substitutes specific values to specifically illustrate the technical solution provided by this embodiment:

[0078] 1. When the number of charging output ports connected to the power receiving device is 1

[0079] Assume that the load request power of this charging output port is 100W and the maximum output power of this port is 50W. Since the load request power of this port > the maximum output power of this port, the power allocated by the power configuration unit 201 to this charging output port is its maximum output power, that is, 50W.

[0080] Assume that the load request power of this charging output port is 100W and the maximum output power of this port is 150W. Since the load request power of this port < the maximum output power of this port, the power allocated by the power configuration unit 201 to this charging output port is its load request power, that is, 100W.

[0081] 2. When the number of charging output ports connected to the power receiving device is 2

[0082] According to the priority order of the charging output ports connected to the power receiving device, these 2 charging output ports are defined as the first charging output port 301 and the second charging output port 302, and the following presets are made as shown in Table 1 below:

[0083] Table 1

[0084]

[0085] Assume Pmax_out = 100W. Since Pmax_out > (the first preset power + the second preset power), the power allocated by the power configuration unit 201 to the first and second charging output ports 301 and 302 is their preset power respectively, that is, the power allocated to the first charging output port 301 is 30W, and the power allocated to the second charging output port 302 is 50W.

[0086] Assume Pmax_out = 50W. Since Pmax_out = (Pmin_c1 + Pmin_c2), the power allocated by the power configuration unit 201 to the first and second charging output ports 301 and 302 is their minimum output power respectively, that is, the power allocated by the power configuration unit to the first charging output port 301 is 20W, and the power allocated to the second charging output port 302 is 30W.

[0087] Assume Pmax_out = 55W. Since (Pmin_c1 + Pmin_c2) < Pmax_out < (the first preset power + the second preset power), the power configuration unit 201 first satisfies the minimum output power of the first and second charging output ports 301 and 302, that is, first performs power allocation according to the minimum output power of the first and second charging output ports 301 and 302, and the remaining power P after allocation0_out =Pmax_out - (Pmin_c1 + Pmin_c2) = 55W - 50W = 5W. The distribution rule for this 5W of remaining power is as follows:

[0088] For the first round of remaining power distribution, the power configuration unit 201 distributes the total power obtained for the first charging output port 301 with the smaller value between (Pmin_c1 + remaining power P 0_out ) and the first preset power. Since (Pmin_c1 + remaining power P 0_out ) = 25W and the first preset power is 30W, the power configuration unit 201 uses 25W as the total power distributed to the first charging output port 301. The remaining power C1 obtained by the first charging output port 301 = the total power distributed to the first charging output port 301 - Pmin_c1 = 25W - 20W = 5W. The remaining power P 1_out =P 0_out - C1 = 5W - 5W = 0. Since P 1_out = 0, the power distribution ends. This means that the total power distributed to the first charging output port 301 is (Pmin_c1 + remaining power P 0_out ), which is 25W, and the total power distributed to the second charging output port 302 is its minimum output power, which is 30W.

[0089] Assume Pmax_out = 70W. Since (Pmin_c1 + Pmin_c2) < Pmax_out < (the first preset power + the second preset power), the power configuration unit 201 first satisfies the minimum output powers of the first and second charging output ports 301 and 302. The remaining power P 0_out =Pmax_out - (Pmin_c1 + Pmin_c2) = 70W - 50W = 20W. The distribution rule for this 20W of remaining power is as follows:

[0090] For the first round of remaining power distribution, the power configuration unit 201 distributes the total power obtained for the first charging output port 301 with the smaller value between (Pmin_c1 + remaining power P 0_out ) and the first preset power. Since (Pmin_c1 + remaining power P 0_out ) = 40W and the first preset power is 30W, the power configuration unit 201 uses 30W as the total power distributed to the first charging output port 301. The remaining power C1 obtained by the first charging output port 301 = the total power distributed to the first charging output port 301 - Pmin_c1 = 30W - 20W = 10W. The remaining power P 1_out =P 0_out-C1 = 20W - 10W = 10W, because P 1_out > 0, so the second round of remaining power distribution is carried out. At this time, the power configuration unit 201 distributes the total power obtained for the second charging output port 302 with the smaller value of (Pmin_c2 + remaining power P 1_out ). It can be understood that because Pmax_out < (the first preset power + the second preset power), so (Pmin_c2 + remaining power P 1_out ) must be less than the second preset power (note: (Pmin_c2 + remaining power P 1_out ) = 40W, the second preset power = 50W). Therefore, the power configuration unit 201 directly distributes the remaining power P 1_out , that is, 10W, to the second charging output port 302 so that the total power obtained by the second charging output port 302 is (Pmin_c2 + remaining power P 1_out ), that is, 40W. Because after the second round of remaining power distribution, the remaining power C2 obtained by the second charging output port 302 = the total power obtained by the second charging output port 302 - Pmin_c2 = remaining power P 1_out = 10W. After the second round of remaining power distribution, the remaining remaining power P 2_out = P 0_out - C1 - C2 = 20W - 10W - 10W = 0. Therefore, the remaining power distribution ends, which means that the total power obtained by the first charging output port 301 is the first preset power, that is, 30W, and the total power obtained by the second charging output port 302 is (Pmin_c2 + remaining power P 1_out ), that is, 40W.

[0091] III. When the number of charging output ports connected to the power receiving device is 3

[0092] According to the priority order of the charging output ports connected to the power receiving device, these 3 charging output ports are defined as the first charging output port 301, the second charging output port 302, and the third charging output port 303, and the following presets are made as shown in Table 2 below:

[0093] Table 2

[0094]

[0095] Assume Pmax_out = 180W. Since Pmax_out = (the first preset power + the second preset power + the third preset power), the power configuration unit 201 allocates the power to the first, second, and third charging output ports 301, 302, and 303 as the preset power of these ports. That is, the power obtained by the first charging output port 301 is 30W, the power obtained by the second charging output port 302 is 50W, and the power obtained by the third charging output port 303 is 100W.

[0096] Assume Pmax_out = 90W. Since Pmax_out = (Pmin_c1 + Pmin_c2 + Pmin_c3), the power configuration unit 201 allocates the power to the first, second, and third charging output ports 301, 302, and 303 as the minimum output power of these ports. That is, the power obtained by the first charging output port 301 is 20W, the power obtained by the second charging output port 302 is 30W, and the power obtained by the third charging output port 303 is 40W.

[0097] Assume Pmax_out = 150W. Since (Pmin_c1 + Pmin_c2 + Pmin_c3) < Pmax_out < (the first preset power + the second preset power + the third preset power), the power configuration unit 201 first satisfies the minimum output power of the first, second, and third charging output ports 301, 302, and 303. The remaining power P at this time 0_out = Pmax_out - (Pmin_c1 + Pmin_c2 + Pmin_c3) = 150W - 90W = 60W. The allocation rule for this 60W of remaining power is:

[0098] When performing the first round of remaining power allocation, the power configuration unit 201 allocates the total power obtained by the first charging output port 301 as the smaller value between (Pmin_c1 + the remaining power P 0_out ) and the first preset power. Since (Pmin_c1 + the remaining power P 0_out ) = 80W and the first preset power is 30W, and since the first preset power < (Pmin_c1 + the remaining power P 0_out ), the power configuration unit 201 allocates the total power of 30W as the first preset power to the first charging output port 301. After the first round of remaining power allocation, the remaining power C1 obtained by the first charging output port 301 = the total power allocated to the first charging output port 301 - Pmin_c1 = 30W - 20W = 10W. After the first round of remaining power allocation, the remaining remaining power P 1_out = P 0_out - C1 = 60W - 10W = 50W. Since P 1_out> 0, so continue with the distribution of the remaining power in the second round.

[0099] During the distribution of the remaining power in the second round, the power configuration unit 201 distributes the total obtained power to the second charging output port 302 with the smaller value of (Pmin_c2 + remaining power P 1_out ) and the second preset power. Since (Pmin_c2 + remaining power P 1_out ) = 80W and the second preset power is 50W, the power configuration unit 201 distributes the total obtained power to the second charging output port 302 with the second preset power of 50W. After the distribution of the remaining power in the second round, the remaining power C2 obtained by the second charging output port 302 = the total power obtained by the second charging output port 302 - Pmin_c2 = 50W - 30W = 20W. After the distribution of the remaining power in the second round, the remaining remaining power P 2_out = P 0_out - C1 - C2 = 60W - 10W - 20W = 30W. Since P 2_out > 0, continue with the distribution of the remaining power in the third round.

[0100] During the distribution of the remaining power in the third round, the power configuration unit 201 distributes the total obtained power to the third charging output port with the smaller value of (Pmin_c3 + remaining power P 2_out ) and the third preset power. Since (Pmin_c3 + remaining power P 2_out ) = 70W and the third preset power is 100W, the power configuration unit 201 distributes the total obtained power to the third charging output port 303 with (Pmin_c3 + remaining power P 2_out ) i.e., 70W. After the distribution of the remaining power in the third round, the remaining power C3 obtained by the third charging output port 303 = the total power obtained by the third charging output port 303 - Pmin_c3 = 70W - 40W = 30W. After the distribution of the remaining power in the third round, the remaining remaining power P 3_out = P 0_out - C1 - C2 - C3 = 60W - 10W - 20W - 30W = 0. Since P 3_out = 0, the power configuration is completed. This means that the total powers obtained by the first charging output port 301 and the second charging output port 302 are their preset powers, which are 30W and 50W respectively, and the total power obtained by the third charging output port 303 is (Pmin_c3 + remaining power P 2_out ) i.e., 70W.

[0101] Embodiment 2

[0102] This embodiment provides a portable energy storage device capable of discharging simultaneously through multiple ports. Its structural design and power distribution logic are basically the same as those of Embodiment 1. The main difference is that for the portable energy storage device provided in Embodiment 1, its charging output ports have different priority orders, while for the portable energy storage device provided in this embodiment, there are at least two charging output ports with the lowest priority. For these charging output ports with the lowest priority, when the remaining power is distributed, since they have the same priority, the remaining power will be evenly distributed. Specifically:

[0103] The portable energy storage device provided in this embodiment includes at least three charging output ports and a power configuration unit 201. The power configuration unit 201 is used to allocate power to the charging output ports connected to the power-receiving devices (it can be understood that when a charging output port is not connected to a power-receiving device, no power will be allocated to this charging output port). The power-receiving device referred to in the present invention means a device to be charged, such as a mobile phone, a camera, etc.

[0104] The charging output ports are pre-set with a priority order for power distribution. For the charging output ports with a higher priority, when the power configuration unit 201 performs power distribution, it will first consider meeting the required power of this charging output port. For the charging output ports with the same lowest priority, if there is remaining power available for allocation, the power configuration unit 201 will evenly distribute the remaining power. Each charging output port is pre-set with a minimum output power and a maximum output power. The so-called minimum output power refers to the minimum power that the power configuration unit will allocate to this port, and the maximum output power refers to the maximum power that the power configuration unit will allocate to this port.

[0105] Define the maximum output total power of the portable energy storage device provided in this embodiment as Pmax_out. It is pre-set that the sum of the minimum output powers of each charging output port ≤ Pmax_out, and the minimum output power of each charging output port ≤ the maximum output power of this port, and the maximum output power of each charging output port ≤ Pmax_out; define the number of charging output ports connected to the power-receiving devices as Y. Among these Y charging output ports, there are x charging output ports with the same priority and the lowest priority, and the remaining Y - k charging output ports have different priorities. Then:

[0106] ① When Y = 1, that is, only one charging output port is connected to the power-receiving device. Whether this charging output port has the lowest priority or other priorities, the power allocated by the power configuration unit 201 to this charging output port is the corresponding preset power. The so-called preset power refers to the smaller value between the maximum output power corresponding to this port and the power requested by the load.

[0107] ② When Y≥2 and these charging output ports have different priorities, for these charging output ports, the power distribution rule is the same as that in Embodiment 1. That is:

[0108] Sort them in descending order of priority, and sequentially define these charging output ports as the first charging output port to the Yth charging output port, and sequentially define their minimum output powers as Pmin_c1 to Pmin_cY respectively, and the smaller values among their maximum output powers and the load request powers as the first preset power to the Yth preset power respectively;

[0109] If Pmax_out=(Pmin_c1+…+Pmin_cY), the power configuration unit allocates the corresponding minimum output power to each charging output port connected to the power receiving device.

[0110] If Pmax_out≥(the first preset power+…+the Yth preset power), the power configuration unit allocates the corresponding preset power to each charging output port connected to the power receiving device.

[0111] If (Pmin_c1+…+Pmin_cY)<Pmax_out<(the first preset power+…+the Yth preset power), the power configuration unit 201 first satisfies the minimum output powers of these charging output ports, and then sequentially distributes the remaining power in the order of priority. Define the initial amount of the remaining power as P 0_out ,P 0_out =Pmax_out-(Pmin_c1+…+Pmin_cY), and the distribution rule is:

[0112] When performing the first round of remaining power distribution, the power configuration unit distributes the total power obtained by the first charging output port with the smaller value of (Pmin_c1+remaining power P 0_out ) and the first preset power. Define that after the first round of remaining power distribution, the remaining power obtained by the first charging output port is C1, C1 = the total power obtained by the first charging output port - Pmin_c1. Define the remaining remaining power after the first round of remaining power distribution as P 1_out ,P 1_out =P 0_out -C1. If P 1_out =0, the power distribution ends; if P 1_out >0, continue to perform the remaining power distribution according to the following rules until the remaining remaining power P k_out =0, thereby ending the power distribution:

[0113] When performing the kth round of remaining power distribution, the power distribution unit uses (Pmin_ck+remaining power P k-1_outThe smaller value of () and the k-th preset power is the total power obtained by allocating to the k-th charging output port. After the remaining power allocation in the k-th round, the remaining power obtained by the k-th charging output port is defined as C k , C k = The total power obtained by allocating to the k-th charging output port - Pmin_ck. After the remaining power allocation in the k-th round, the remaining remaining power is defined as P k_out , P k_out = P 0_out - C1 - … - C k , where k is a positive integer and 2 ≤ k ≤ Y.

[0114] ③ When Y ≥ 2 and among these Y charging output ports, x charging output ports have the same priority and are the lowest priority. When Y = x: If Pmax_out ≥ the sum of the preset powers of these Y charging output ports, the power configuration unit allocates the corresponding preset power to each charging output port connected to the power receiving device; if Pmax_out < the sum of the preset powers of these charging output ports, the power configuration unit first satisfies the minimum output power of these charging output ports, and then evenly distributes the remaining power.

[0115] ④ When Y ≥ 3 and among these Y charging output ports, x charging output ports have the same priority and are the lowest priority, Y > x ≥ 2 (in this case, the remaining Y - x charging output ports have different priorities):

[0116] Sort in descending order of priority. The charging output ports are sequentially defined as the first charging output port to the Y-th charging output port. Among them, the Y - x + 1-th charging output port to the Y-th charging output port have the same priority. Therefore, for these x lowest-priority charging output ports, there is no restriction on their internal order. After sorting by priority, the minimum output powers of these charging output ports are sequentially defined as Pmin_c1 to Pmin_cY, and the smaller values of their maximum output powers and load request powers are respectively defined as the first preset power to the Y-th preset power.

[0117] If Pmax_out = (Pmin_c1 + … + Pmin_cY), the power configuration unit allocates the corresponding minimum output power to each charging output port connected to the power receiving device.

[0118] If Pmax_out ≥ (the first preset power + … + the Y-th preset power), the power configuration unit allocates the corresponding preset power to each charging output port connected to the power receiving device.

[0119] If (Pmin_c1 + … + Pmin_cY) < Pmax_out < (the first preset power + … + the Y-th preset power), the power configuration unit 201 first satisfies the minimum output power of these charging output ports (that is, the power configuration unit first allocates the corresponding minimum output power to each charging output port connected to the power receiving device), and then allocates the remaining power in sequence according to the priority order. Define the initial amount of the remaining power as P 0_out , P 0_out = Pmax_out - (Pmin_c1 + … + Pmin_cY). The allocation rule is as follows:

[0120] When performing the first round of remaining power allocation, the power configuration unit 201 allocates the total power obtained to the first charging output port 301 with the smaller value of (Pmin_c1 + the remaining power P 0_out ) and the first preset power. Define that after the first round of remaining power allocation, the remaining power obtained by the first charging output port 301 is C1, C1 = the total power allocated to the first charging output port 301 - Pmin_c1. Define the remaining remaining power after the first round of remaining power allocation as P 1_out , P 1_out = P 0_out - C1. If P 1_out = 0, the power allocation ends; if P 1_out > 0 and at this time only x charging output ports have not been allocated the remaining power, the power configuration unit 201 evenly distributes the remaining power P 1_out to these x charging output ports, and the power allocation ends; if P 1_out > 0 and the number of charging output ports that have not been allocated the remaining power > x, the power configuration unit 201 continues to perform the remaining power allocation according to the following remaining power allocation rule until condition one or condition two is reached:

[0121] The remaining power allocation rule is: when performing the k-th round of remaining power allocation, the power configuration unit 201 allocates the total power obtained to the k-th charging output port with the smaller value of (Pmin_ck + the remaining power P k-1_out ) and the k-th preset power. Define that after the k-th round of remaining power allocation, the remaining power obtained by the k-th charging output port is C k , C k = the total power allocated to the k-th charging output port - Pmin_ck. Define the remaining remaining power after the k-th round of remaining power allocation as P k_out , P k_out = P 0_out - C1 - … - C k ;

[0122] The condition one is: the remaining remaining power P k_outis 0; the second condition is: the remaining surplus power P k_out > 0 and the remaining power has not been allocated to the (Y - x + 1)-th to Y-th charging output ports; if the first condition is met first, the power configuration ends; if the second condition is met first, then the remaining power P k_out is evenly allocated to the (Y - x + 1)-th to Y-th charging output ports, and the power allocation ends, where k is a positive integer and 2 ≤ k ≤ Y - x. It should be noted here that after the remaining power is evenly allocated to the (Y - x + 1)-th to Y-th charging output ports, if the (remaining power + minimum output power) obtained by a certain port ≥ its preset power, then the port finally operates at the preset power; if the (remaining power + minimum output power) obtained by a certain port < its preset power, then the port finally operates at (the remaining power + minimum output power).

[0123] The portable energy storage device provided in this embodiment can ensure that when there are power-consuming devices connected to multiple charging output ports and the sum of the required powers of the power-consuming devices is greater than the maximum power that this device can provide, all ports can operate at the set minimum power. Further, when power-consuming devices are connected to multiple charging output ports and power is allocated according to the above rules, if during operation, the power-consuming device on a certain charging output port is removed, causing a change in the charging output ports to which the power-consuming devices are connected, then power is reallocated according to the above rules based on the number of charging output ports to which the currently connected power-consuming devices are connected, so that the power released due to the removal of the power-consuming device on a certain port can be allocated to the ports where the power-consuming devices have not been removed, thereby enabling the portable energy storage device to output at the maximum power it can provide as much as possible and achieving the effect of dynamic adjustment. Moreover, for the portable energy storage device provided in this embodiment, except that the lowest priority has at least 2 charging output ports, the remaining charging output ports have different priorities and the priorities are set in advance. Therefore, when the user uses this device, they can determine the priority order of multiple power-consuming devices according to the actual requirements.

[0124] To facilitate understanding of the technical solution provided in this embodiment, specific values are provided below for further elaboration:

[0125] Assume that the portable energy storage device is provided with 4 charging output ports, which are respectively defined as the W port, the A port, the C1 port, and the C2 port. The priorities of these four charging output ports are set as: W port > A port > C1 port = C2 port (therefore, as Figure 3 shown, if defined in order, the W port is the first charging output port 301, the A port is the second charging output port 302, the C1 port is the third charging output port 303, and the C2 port is the fourth charging output port 304). When power-consuming devices are connected to these four charging output ports, the relevant power data is as shown in Table 3 below:

[0126] Table 3

[0127]

[0128] ① If only the W port is connected to the powered device, since the smaller value between its maximum output power and the load-requested power is 30W, the power configuration unit 201 allocates 30W of power to the W port; correspondingly, if only the C1 port is connected to the powered device, since the smaller value between its maximum output power and the load-requested power is 70W, the power configuration unit 201 allocates 70W of power to the C1 port.

[0129] ② If only the C1 port and the C2 port are connected to the powered device, assuming Pmax_out = 110W, because Pmax_out < (the preset power of C1 + the preset power of C2), the power configuration unit 201 first satisfies the minimum output power of the C1 port and the C2 port. At this time, the remaining power = Pmax_out - (Pmin_C1 + Pmin_C2) = 10W. The power configuration unit 201 evenly distributes the remaining 10W of power to the C1 port and the C2 port. Therefore, the total power finally obtained by the C1 port and the C2 port is 55W each.

[0130] ③ If only the W port, the A port, and the C1 port are connected to the powered device, assuming Pmax_out = 140W, because (Pmin_W + Pmin_A + Pmin_C1) < Pmax_out < (the preset power of W + the preset power of A + the preset power of C1), the power configuration unit 201 first satisfies the minimum output power of the W port, the A port, and the C1 port, and then distributes the remaining power in the order of priority. Define the initial amount of the remaining power as P 0_out ,P 0_out = Pmax_out - (Pmin_W + Pmin_A + Pmin_C1) = 140W - 100W = 40W. The distribution rule is:

[0131] When performing the first-round remaining power distribution, the power configuration unit 201 allocates the total power obtained by the W port with the smaller value between (Pmin_W + the remaining power P 0_out ) and the preset power of W. (Pmin_W + the remaining power P 0_out ) is 60W, and the preset power of W is 30W. Since the preset power of W is smaller, the power configuration unit 201 allocates 30W of total power to the W port. After the first-round remaining power distribution, the remaining power of the W port C1 = the total power allocated to the W port - Pmin_W = 30W - 20W = 10W. After the first-round remaining power distribution, the remaining remaining power P 1_out = P 0_out - C1 = 40W - 10W = 30W.

[0132] Because P 1_out> 0, continue with the second-round remaining power allocation. During the second-round remaining power allocation, the power configuration unit 201 uses the smaller value between (Pmin_A + remaining power P 1_out ) and the preset power of A as the total power obtained for the allocation of port A. Since (Pmin_A + remaining power P 1_out ) = 60W and the preset power of A is 50W, the total power allocated by the power configuration unit 201 to port A is 50W. After the second-round remaining power allocation, the remaining power obtained by port A is C2, and C2 = total power obtained for the allocation of port A - Pmin_A = 50W - 30W = 20W. The remaining remaining power after the second-round remaining power allocation is P 2_out , P 2_out = P 0_out - C1 - C2 = 10W.

[0133] Since P 2_out > 0, continue with the third-round remaining power allocation. During the third-round remaining power allocation, the power configuration unit 201 uses the smaller value between (Pmin_C1 + remaining power P 2_out ) and the preset power of C1 as the total power obtained for the allocation of port C1. Since (Pmin_C1 + remaining power P 2_out ) = 60W and the preset power of C1 is 70W, the total power allocated by the power configuration unit 201 to port C1 is 60W. After the third-round remaining power allocation, the remaining power obtained by port C1 is C3, and C3 = total power obtained for the allocation of port C1 - Pmin_C1 = 60W - 50W = 10W. The remaining remaining power after the third-round remaining power allocation is P 3_out , P 3_out = P 0_out - C1 - C2 = 0, so the power allocation ends.

[0134] ④ If only the W port, C1, and C2 ports are connected to the powered devices, assuming Pmax_out = 130W, since (Pmin_W + Pmin_C1 + Pmin_C2) < Pmax_out < (preset power of W + preset power of C1 + preset power of C2), the power configuration unit 201 first satisfies the minimum output powers of the W port, C1, and C2, and then sequentially performs the remaining power allocation according to the priority order. The initial amount of the remaining power P 0_out = Pmax_out - (Pmin_W + Pmin_C1 + Pmin_C2) = 10W, and the allocation rule is:

[0135] During the first-round remaining power allocation, the power configuration unit 201 uses the smaller value between (Pmin_W + remaining power P 0_out ) and the preset power of W as the total power obtained for the allocation of port W. (Pmin_W + remaining power P 0_out) = 30W, the preset power of W is also 30W. Therefore, the total power allocated by the power configuration unit 201 to the W port is 30W. After the first-round remaining power allocation, the remaining power obtained by the W port is C1, and C1 = the total power obtained by the W port allocation - Pmin_W = 10W. After the first-round remaining power allocation, the remaining remaining power P 1_out = P 0_out - C1 = 0. Since P 1_out = 0, the power configuration ends. This means that the total power obtained by the W port allocation is 30W, and the total power obtained by the C1 port and the C2 port allocations is their minimum output power, i.e., 50W.

[0136] Assume Pmax_out = 140W. Since (Pmin_W + Pmin_C1 + Pmin_C2) < Pmax_out < (the preset power of W + the preset power of C1 + the preset power of C2), the power configuration unit 201 first satisfies the minimum output powers of the W port, C1, and C2, and then allocates the remaining power in order of priority. The initial amount of the remaining power P 0_out = Pmax_out - (Pmin_W + Pmin_C1 + Pmin_C2) = 20W, and the allocation rule is:

[0137] When performing the first-round remaining power allocation, the power configuration unit 201 uses the smaller value between (Pmin_W + the remaining power P 0_out ) and the preset power of W as the total power obtained by the W port allocation. (Pmin_W + the remaining power P 0_out ) = 30W, and the preset power of W is also 30W. Therefore, the total power allocated by the power configuration unit 201 to the W port is 30W. After the first-round remaining power allocation, the remaining power obtained by the W port is C1, and C1 = the total power obtained by the W port allocation - Pmin_W = 10W. After the first-round remaining power allocation, the remaining remaining power P 1_out = P 0_out - C1 = 10W. Since P 1_out > 0 and at this time only the two charging output ports C1 and C2 have not been allocated the remaining power, the power configuration unit 201 evenly distributes the remaining power P 1_out to the second to third charging output ports 302 and 303, i.e., the C1 port and the C2 port. Each of the C1 port and the C2 port is allocated 5W, and the power allocation ends. This means that the total power obtained by the W port allocation is 30W, and the total power obtained by the C1 port and the C2 port allocations is 55W each.

[0138] ④ If power receiving devices are connected to the W port, the A port, the C1 port, and the C2 port:

[0139] Assume Pmax_out = 250W. Since Pmax_out > (preset power of W + preset power of A + preset power of C1 + preset power of C2), the power configuration unit 201 allocates the power to ports W, A, C1, and C2 as their preset powers respectively. That is, the power obtained by port W is 30W, the power obtained by port A is 50W, the power obtained by port C1 is 70W, and the power obtained by port C2 is 70W.

[0140] Assume Pmax_out = 150W. Since Pmax_out = (Pmin_W + Pmin_A + Pmin_c1 + Pmin_c2), the power configuration unit 201 allocates the power to ports W, A, C1, and C2 as their minimum output powers respectively. That is, the power obtained by port W is 20W, the power obtained by port A is 30W, the power obtained by port C1 is 50W, and the power obtained by port C2 is 50W.

[0141] Assume Pmax_out = 170W. Since (Pmin_W + Pmin_A + Pmin_c1 + Pmin_c2) < Pmax_out < (preset power of W + preset power of A + preset power of C1 + preset power of C2), the power configuration unit 201 first satisfies the minimum output powers of ports W, A, C1, and C2. At this time, the remaining power P 0_out = Pmax_out - (Pmin_W + Pmin_A + Pmin_c1 + Pmin_c2) = 170W - 150W = 20W. The allocation rule for this 20W of remaining power is as follows:

[0142] For the first round of remaining power allocation, the power configuration unit 201 allocates the total power to port W as the smaller value between (Pmin_W + remaining power P 0_out ) and the preset power of W. Since (Pmin_W + remaining power P 0_out ) = 40W and the preset power of W is 30W, the power configuration unit 201 allocates 30W as the total power to port W. The remaining power C1 obtained by port W = total power allocated to port W - Pmin_W = 30W - 20W = 10W. After the first round of remaining power allocation, the remaining remaining power P 1_out = P 0_out - C1 = 20W - 10W = 10W. Since P 1_out > 0 and there are 3 charging output ports that have not been allocated remaining power at this time, and the number of charging output ports with the same lowest priority is 2, so the second round of remaining power allocation is carried out.

[0143] During the second round of remaining power allocation, the power configuration unit 201 takes (Pmin_A + remaining power P 1_out) and the smaller value of the A preset power is the total power obtained by allocating to Port A. Since (Pmin_A + remaining power P 1_out ) = 40W and the A preset power is 50W, the power configuration unit 201 allocates the total power of 40W (i.e., Pmin_A + remaining power P 1_out ) to Port A. After the second-round remaining power allocation, the remaining power C2 obtained by Port A = the total power obtained by allocating to Port A - Pmin_A = 40W - 30W = 10W. After the second-round remaining power allocation, the remaining remaining power P 2_out = P 0_out - C1 - C2 = 20W - 10W - 10W = 0. Since the remaining remaining power P 2_out = 0 at this time, the termination condition is reached, so the power allocation ends. This means that the total power obtained by allocating to Port W is 30W, the total power obtained by allocating to Port A is 40W, and the total powers obtained by allocating to Port C1 and Port C2 are their minimum output powers, i.e., 50W respectively.

[0144] Assume Pmax_out = 200W. Since (Pmin_W + Pmin_A + Pmin_c1 + Pmin_c2) < Pmax_out < (W preset power + A preset power + C1 preset power + C2 preset power), the power configuration unit 201 first satisfies the minimum output powers of Port W, Port A, Port C1, and Port C2. At this time, the remaining power P 0_out = Pmax_out - (Pmin_W + Pmin_A + Pmin_c1 + Pmin_c2) = 200W - 150W = 50W. The allocation rule for this 50W of remaining power is:

[0145] For the first-round remaining power allocation, the power configuration unit 201 allocates the total power obtained by allocating to Port W with the smaller value of (Pmin_W + remaining power P 0_out ) and the W preset power. Since (Pmin_W + remaining power P 0_out ) = 70W and the W preset power is 30W, the power configuration unit 201 uses 30W as the total power obtained by allocating to Port W. The remaining power C1 obtained by Port W = the total power obtained by allocating to Port W - Pmin_w = 30W - 20W = 10W. After the first-round remaining power allocation, the remaining remaining power P 1_out = P 0_out - C1 = 50W - 10W = 40W. Since P 1_out > 0 and there are 3 charging output ports for which the remaining power has not been allocated at this time, and the number of charging output ports with the same lowest priority is 2, so the second-round remaining power allocation is performed.

[0146] During the second-round remaining power allocation, the power configuration unit 201 uses (Pmin_A + remaining power P1_out ), and the smaller value of the A preset power is the total power obtained by allocating to the A port. Because (Pmin_A + remaining power P 1_out ) = 70W, the A preset power is 50W. Therefore, the power configuration unit 201 uses the A preset power of 50W as the total power obtained by allocating to the A port. After the second-round remaining power allocation, the remaining power C2 obtained by the A port = the total power obtained by allocating to the A port - Pmin_A = 50W - 30W = 20W. After the second-round remaining power allocation, the remaining remaining power P 2_out = P 0_out - C1 - C2 = 50W - 10W - 20W = 20W.

[0147] Because P 2_out > 0 and only the two lowest-priority ports C1 and C2 have not been allocated the remaining power. Therefore, the foregoing remaining power allocation rule ends, and instead the remaining power P 2_out is evenly distributed to the C1 port and the C2 port. The C1 port and the C2 port each obtain 10W. Therefore, adding the minimum output power, the total power obtained by the C1 port is 60W, and the total power obtained by the C2 port is also 60W. At this time, the power configuration ends. For the maximum output power of the 200W portable energy storage device, the W port obtains 30W, the A port obtains 50W, and the C1 port and the C2 port each obtain 60W.

[0148] Specifically, among the W port, the A port, the C1 port, and the C2 port, the W port and the A port can be unidirectional ports that can only discharge, and the C1 port and the C2 port can be bidirectional ports that can both charge and discharge.

[0149] Embodiment 3

[0150] This embodiment provides a power allocation method for a portable energy storage device, which is applied to the portable energy storage device described in Embodiment 1. The structure of the portable energy storage device is as shown in Embodiment 1, which includes at least two charging output ports and a power configuration unit. The power configuration unit is used to allocate power to the charging output ports accessing the power-consuming device. The charging output ports are pre-configured with a priority order during power allocation, and each charging output port is pre-configured with a minimum output power and a maximum output power.

[0151] Define the maximum output total power of the portable energy storage device as Pmax_out (in this application, the sum of the minimum output powers of each charging output port is ≤ Pmax_out, and the minimum output power of each charging output port ≤ the maximum output power of this port, and the maximum output power of each charging output port ≤ Pmax_out). Define the number of charging output ports connecting the power-consuming device as Y; the power allocation method includes:

[0152] When Y = 1, the power configuration unit allocates power based on the smaller value between the maximum output power of the charging output port and the load-requested power.

[0153] When Y ≥ 2 and the Y charging output ports have different priorities, then for these charging output ports, sort them in descending order of priority, and sequentially define these charging output ports as the first charging output port to the Y-th charging output port, and sequentially define their minimum output powers as Pmin_c1 to Pmin_cY, and the smaller values between their maximum output powers and the load-requested powers as the first preset power to the Y-th preset power respectively;

[0154] If Pmax_out = (Pmin_c1 + … + Pmin_cY), then the power configuration unit allocates the corresponding minimum output power to each charging output port connected to the power-receiving device;

[0155] If Pmax_out ≥ (the first preset power + … + the Y-th preset power), then the power configuration unit allocates the corresponding preset power to each charging output port connected to the power-receiving device;

[0156] If (Pmin_c1 + … + Pmin_cY) < Pmax_out < (the first preset power + … + the Y-th preset power), then the power configuration unit first satisfies the minimum output powers of these charging output ports, and then sequentially allocates the remaining power in the order of priority. Define the initial amount of the remaining power as P 0_out , P 0_out = Pmax_out - (Pmin_c1 + … + Pmin_cY), and the allocation rule is:

[0157] When performing the first round of remaining power allocation, the power configuration unit allocates the total power obtained for the first charging output port based on the smaller value between (Pmin_c1 + the remaining power P 0_out ) and the first preset power. After the first round of remaining power allocation, define the remaining power obtained by the first charging output port as C1, C1 = the total power obtained by the first charging output port - Pmin_c1. After the first round of remaining power allocation, define the remaining remaining power as P 1_out , P 1_out = P 0_out - C1. If P 1_out = 0, then the power allocation ends; if P 1_out > 0, continue the remaining power allocation according to the following rules until the remaining remaining power P k_out = 0, thereby ending the power allocation:

[0158] When performing the k-th round of remaining power allocation, the power configuration unit uses (Pmin_ck + the remaining power P k-1_outThe smaller value between () and the k-th preset power is the total power obtained by allocating to the k-th charging output port. After the remaining power allocation in the k-th round, the remaining power obtained by the k-th charging output port is defined as C k , C k = The total power obtained by allocating to the k-th charging output port - Pmin_ck. After the remaining power allocation in the k-th round, the remaining remaining power is defined as P k_out , P k_out = P 0_out - C1 - … - C k , where k is a positive integer and k ≥ 2.

[0159] Embodiment 4

[0160] This embodiment provides a power allocation method for a portable energy storage device, which is applied to the portable energy storage device described in Embodiment 2. As described in Embodiment 2, the portable energy storage device includes at least three charging output ports and a power configuration unit. The power configuration unit is used to allocate power to the charging output ports accessing the power receiving device. The charging output ports are pre-configured with a priority order during power allocation, and each charging output port is pre-configured with a minimum output power and a maximum output power.

[0161] Define the maximum output total power of the portable energy storage device as Pmax_out. It is pre-set that the sum of the minimum output powers of each charging output port ≤ Pmax_out, and the minimum output power of each charging output port ≤ the maximum output power of this port, and the maximum output power of each charging output port ≤ Pmax_out; define the number of charging output ports connected to the power receiving device as Y. Among these Y charging output ports, the number of charging output ports with the same lowest priority is x, and the remaining Y - x charging output ports have different priorities;

[0162] The method includes:

[0163] When Y = 1, that is, only one charging output port is connected to the power receiving device, regardless of whether this charging output port is the lowest priority (at this time x = 1, Y - x = 0) or other priorities (at this time x = 0, Y - x = 1), the power configuration unit allocates the smaller value between the maximum output power of this charging output port and the load request power as the allocated power.

[0164] When Y ≥ 2 and Y = x, that is, all these Y charging output ports have the same lowest priority. If Pmax_out ≥ the sum of the preset powers of these Y charging output ports, the power configuration unit allocates the corresponding preset power to each charging output port connected to the power receiving device; if Pmax_out < the sum of the preset powers of these charging output ports, the power configuration unit first satisfies the minimum output powers of these charging output ports, and then evenly allocates the remaining power.

[0165] When Y≥2 and x = 1, that is, the Y charging output ports have different priorities. Then, the discharge power allocation is performed according to the method described in Embodiment 3, which will not be elaborated here.

[0166] When Y≥3 and 2≤x<Y, sort in descending order of priority. Define the charging output ports in sequence as the first charging output port to the Yth charging output port. Among them, the priorities of the (Y - x + 1)th charging output port to the Yth charging output port are the same. Define the minimum output powers of these charging output ports as Pmin_c1 to Pmin_cY respectively, and the smaller values of their maximum output powers and the load request powers as the first preset power to the Yth preset power;

[0167] If Pmax_out=(Pmin_c1+…+Pmin_cY), the power configuration unit allocates the corresponding minimum output power to each charging output port connected to the power receiving device;

[0168] If Pmax_out≥(the first preset power+…+the Yth preset power), the power configuration unit allocates the corresponding preset power to each charging output port connected to the power receiving device;

[0169] If (Pmin_c1+…+Pmin_cY)<Pmax_out<(the first preset power+…+the Yth preset power), the power configuration unit first satisfies the minimum output powers of these charging output ports, and then allocates the remaining power in sequence according to the priority order. Define the initial amount of the remaining power as P 0_out ,P 0_out =Pmax_out-(Pmin_c1+…+Pmin_cY). The allocation rule is:

[0170] When performing the first round of remaining power allocation, the power configuration unit allocates the total power obtained by the first charging output port with the smaller value of (Pmin_c1 + the remaining power P 0_out ) and the first preset power. After the first round of remaining power allocation, define the remaining power obtained by the first charging output port as C1, C1 = the total power obtained by the first charging output port - Pmin_c1. Define the remaining remaining power after the first round of remaining power allocation as P 1_out ,P 1_out =P 0_out -C1. If P 1_out =0, the power allocation ends; if P 1_out >0 and at this time only x charging output ports have not been allocated the remaining power, the power configuration unit evenly distributes the remaining power P 1_out to these x charging output ports, and the power allocation ends; if P 1_outIf there are > 0 charging output ports that have not been allocated the remaining power and > x such ports, the power configuration unit continues the allocation according to the following remaining power allocation rules until condition one or condition two is met:

[0171] The remaining power allocation rule is: in the k-th round of remaining power allocation, the power configuration unit allocates the total power obtained by the k-th charging output port as the smaller value of (Pmin_ck + the remaining power P k-1_out ). After the k-th round of remaining power allocation, define the remaining power obtained by the k-th charging output port as C k , C k = the total power allocated to the k-th charging output port - Pmin_ck. After the k-th round of remaining power allocation, define the remaining remaining power as P k_out , P k_out = P 0_out - C1 - … - C k ;

[0172] Condition one is: the remaining remaining power P k_out is 0; Condition two is: the remaining remaining power P k_out > 0 and at this time only x charging output ports have not been allocated the remaining power; if condition one is reached first, the power allocation ends; if condition two is reached first, then the remaining power P k_out is evenly allocated to the remaining x charging output ports, and the power allocation ends, where k is a positive integer and k ≥ 2.

[0173] The types of the charging output ports mentioned above in the present invention are not limited. The multiple charging output ports can be charging output ports of the same type or different types. And in the present invention, the total power allocated to a certain charging output port is usually also the operating power of this port, but there are two special cases: one is that after the remaining power is evenly allocated to several charging output ports with the lowest priority, if the total power allocated to a certain port is (the remaining power + the minimum output power) ≥ the preset power of this port, then this port will finally use the preset power as the operating power; the other is that the total power obtained by a certain port is the minimum output power of this port, if this minimum output power > the load request power of this port, then this port will finally use the load request power as the operating power.

[0174] The specific embodiments of the present invention are described above. Through the above description, relevant staff can make various changes and modifications completely within the scope of not deviating from the technical idea of this invention.

Claims

1. A portable energy storage device capable of discharging simultaneously through multiple ports, characterized in that, It includes a power configuration unit and at least two charging output ports. The power configuration unit is used to allocate power to the charging output ports of the connected power receiving devices. Each charging output port is pre-configured with the priority of power allocation and the minimum and maximum output powers; define the maximum total output power of the energy storage device as Pmax_out and the number of charging output ports connected to the power receiving device as Y. Define these ports as the first to the Yth charging output ports in descending order of priority, their minimum output powers as Pmin_c1 to Pmin_cY, and the smaller value between their maximum output power and the load request power as the first to the Yth preset powers; when Y≥2 and these Y charging output ports have different priorities, then: If (Pmin_c1 + … + Pmin_cY) < Pmax_out < (the first preset power + … + the Y-th preset power), the power configuration unit first satisfies the minimum output power of these ports, and then sequentially distributes the remaining power in the order of priority. Define the initial amount of the remaining power as P 0_out , and the remaining power distribution rule is: When performing the remaining power distribution in the first round, the power configuration unit allocates the total obtained power to the first charging output port with the smaller value of (Pmin_c1 + remaining power P 0_out ). After the first-round remaining power distribution, the remaining power obtained by the first charging output port is defined as C1, C1 = the total power allocated to the first charging output port - Pmin_c1. After the first-round remaining power distribution, the remaining remaining power is defined as P 1_out , P 1_out = P 0_out - C1. If P 1_out = 0, the power distribution ends; if P 1_out > 0, continue the remaining power distribution according to the following rules until the remaining remaining power P k_out = 0, thus ending the power distribution: When performing the remaining power distribution in the kth round, the power configuration unit allocates the total obtained power to the kth charging output port with the smaller value of (Pmin_ck + remaining power P k-1_out ). After the kth-round remaining power distribution, the remaining power obtained by the kth charging output port is defined as C k , C k = the total power allocated to the kth charging output port - Pmin_ck. After the kth-round remaining power distribution, the remaining remaining power is defined as P k_out , P k_out = P 0_out - C1 - … - C k , where k is a positive integer and k ≥ 2.

2. The portable energy storage device capable of discharging simultaneously through multiple ports according to claim 1, wherein When Y≥2 and these Y charging output ports all have the same lowest priority, then: If Pmax_out < the sum of the preset powers of these ports, the power configuration unit first satisfies the minimum output powers of these ports, and then evenly distributes the remaining power.

3. The portable energy storage device capable of discharging simultaneously through multiple ports according to claim 1, characterized in that, When Y≥3 and among these Y charging output ports, there are x ports with the same lowest priority and the remaining Y - x ports have different priorities, where 2≤x<Y, then: If (Pmin_c1 + … + Pmin_cY) < Pmax_out < (the first preset power + … + the Y-th preset power), the power configuration unit first satisfies the minimum output power of these ports, and then distributes the remaining power in order of priority. Define the initial amount of the remaining power as P 0_out , and the distribution rule is: When performing the remaining power distribution in the first round, the power configuration unit allocates the total obtained power to the first charging output port with the smaller value of (Pmin_c1 + remaining power P 0_out ). After the first-round remaining power distribution, the remaining power obtained by the first charging output port is defined as C1, C1 = the total power allocated to the first charging output port - Pmin_c1. After the first-round remaining power distribution, the remaining remaining power is defined as P 1_out , P 1_out = P 0_out - C1. If P 1_out = 0, the power distribution ends; if P 1_out > 0 and at this time only x charging output ports have not been allocated the remaining power, the power configuration unit evenly distributes the remaining power P 1_out to these x charging output ports, and the power distribution ends; if P 1_out > 0 and the number of charging output ports that have not been allocated the remaining power is greater than x, the power configuration unit continues to allocate according to the following remaining power distribution rules until condition one or condition two is met: The remaining power distribution rule is as follows: during the remaining power distribution in the k-th round, the power configuration unit allocates the total power obtained for the k-th charging output port as the smaller value between (Pmin_ck + the remaining power P k-1_out ) and the k-th preset power. After the remaining power distribution in the k-th round, define the remaining power obtained by the k-th charging output port as C k , and the remaining remaining power is P k_out , C k = the total power allocated to the k-th charging output port - Pmin_ck, P k_out = P 0_out - C1 - … - C k ; The first condition is that the remaining residual power P k_out is 0; the second condition is that the remaining residual power P k_out > 0 and at this time only x charging output ports have not been allocated the residual power; if the first condition is reached first, the power distribution ends; if the second condition is reached first, the residual power P k_out is evenly distributed to the remaining x charging output ports, and the power distribution ends, where k is a positive integer and k ≥ 2.

4. The portable energy storage device capable of discharging simultaneously through multiple ports according to any one of claims 1 to 3, wherein If Pmax_out=(Pmin_c1+…+Pmin_cY), the power configuration unit allocates the corresponding minimum output power to each charging output port connected to the power receiving device; if Pmax_out≥(the first preset power+…+the Yth preset power), the power configuration unit allocates the corresponding preset power to each charging output port connected to the power receiving device.

5. The portable energy storage device capable of discharging simultaneously through multiple ports according to any one of claims 1 to 3, characterized in that When Y = 1, the power configuration unit allocates power with the smaller value between the maximum output power of this charging output port and the load request power.

6. The portable energy storage device capable of simultaneous multi-port discharging according to claim 1, wherein Inside the portable energy storage device, there is a main control board and one or more independent circuit boards connected to the main control board. The charging output ports are arranged on the circuit boards, and the power configuration unit is arranged on the main control board.

7. The portable energy storage device capable of discharging simultaneously through multiple ports according to claim 6, wherein, The power configuration unit calculates the real-time power requirements of each charging output port by reading the preset parameters of the charging output ports and configures the discharge power of each charging output port accordingly. The preset parameters include current and voltage.

8. The portable energy storage device capable of discharging simultaneously through multiple ports according to claim 6, wherein Protection circuits are provided on both the circuit board and the main control board. The protection circuit includes any one or more of an overcurrent protection circuit, an overvoltage protection circuit, an over-temperature protection circuit, and a short-circuit protection circuit. When an abnormal situation is detected, the protection circuit responds and cuts off the power supply of the relevant circuit.

9. A power distribution method for a portable energy storage device, characterized in that, Applied to the portable energy storage device according to claim 1, the method includes: When the number of charging output ports Y for connecting the power receiving device is ≥ 2 and the Y charging output ports have different priorities, then: If (Pmin_c1 + … + Pmin_cY) < Pmax_out < (the first preset power + … + the Y-th preset power), the power configuration unit first satisfies the minimum output power of these charging output ports, and then distributes the remaining power in order of priority. Define the initial amount of the remaining power as P 0_out , and the distribution rule is: When performing the remaining power distribution in the first round, the power configuration unit allocates the total obtained power to the first charging output port with the smaller value between (Pmin_c1 + remaining power P 0_out ) and the first preset power. After the remaining power distribution in the first round, define the remaining power obtained by the first charging output port as C1, C1 = the total power allocated to the first charging output port - Pmin_c1. Define the remaining remaining power after the remaining power distribution in the first round as P 1_out , P 1_out = P 0_out - C1. If P 1_out = 0, the power distribution ends; if P 1_out > 0, continue the remaining power distribution according to the following rules until the remaining remaining power P k_out = 0, thereby ending the power distribution: When performing the remaining power distribution in the k-th round, the power configuration unit allocates the total obtained power to the k-th charging output port with the smaller value between (Pmin_ck + remaining power P k-1_out ) and the k-th preset power. After the remaining power distribution in the k-th round, define the remaining power obtained by the k-th charging output port as C k , C k = the total power allocated to the k-th charging output port - Pmin_ck. Define the remaining remaining power after the remaining power distribution in the k-th round as P k_out , P k_out = P 0_out - C1 - … - C k , where k is a positive integer and k ≥ 2.

10. The power distribution method of the portable energy storage device according to claim 9, characterized in that, When the number of charging output ports Y connected to the power receiving device is ≥2 and these Y charging output ports all have the same lowest priority, then: If Pmax_out < the sum of the preset powers of these charging output ports, the power configuration unit first satisfies the minimum output powers of these charging output ports, and then evenly distributes the remaining power; When the number Y of charging output ports connecting the power receiving device is ≥ 3, and there are x ports with the same lowest priority among these Y charging output ports, and the remaining Y - x ports have different priorities, where 2 ≤ x < Y, then: If (Pmin_c1 + … + Pmin_cY) < Pmax_out < (the first preset power + … + the Y-th preset power), the power configuration unit first satisfies the minimum output power of these charging output ports, and then distributes the remaining power in order of priority. Define the initial amount of the remaining power as P 0_out , and the distribution rule is: When performing the remaining power distribution in the first round, the power configuration unit distributes the total obtained power to the first charging output port with the smaller value of (Pmin_c1 + remaining power P 0_out ). After the remaining power distribution in the first round, the remaining power obtained by the first charging output port is defined as C1, C1 = the total power obtained by the first charging output port - Pmin_c1. The remaining remaining power after the remaining power distribution in the first round is defined as P 1_out , P 1_out = P 0_out - C1. If P 1_out = 0, the power distribution ends; if P 1_out > 0 and at this time only x charging output ports have not been allocated the remaining power, the power configuration unit evenly distributes the remaining power P 1_out to these x charging output ports, and the power distribution ends; if P 1_out > 0 and the number of charging output ports that have not been allocated the remaining power > x, the power configuration unit continues to distribute according to the following remaining power distribution rules until condition one or condition two is met: The remaining power distribution rule is as follows: during the remaining power distribution in the k-th round, the power configuration unit allocates the total power obtained for the k-th charging output port with the smaller value of (Pmin_ck + remaining power P k-1_out ) and the k-th preset power. After the remaining power distribution in the k-th round, the remaining power obtained by the k-th charging output port is defined as C k , C k = the total power allocated to the k-th charging output port - Pmin_ck. After the remaining power distribution in the k-th round, the remaining remaining power is defined as P k_out , P k_out = P 0_out - C1 - … - C k ; The first condition is that the remaining residual power P k_out is 0; the second condition is that the remaining residual power P k_out > 0 and at this time only x charging output ports have not been allocated the residual power; if the first condition is reached first, the power allocation ends; if the second condition is reached first, the residual power P k_out is evenly allocated to the remaining x charging output ports, and the power allocation ends, where k is a positive integer and k ≥ 2.

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