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

Abstract

The present invention provides a portable energy storage device capable of multi-port simultaneous charging and discharging and a charging and discharging power distribution method, wherein the energy storage device includes a power configuration unit, at least two power input ports, and at least two charging output ports, the power configuration unit is used to allocate power to the power input port connected to the charging device and the charging output port connected to the powered device, and the maximum allowable operating power of the energy storage device in the charging and discharging mode is defined as Pmax, the power configuration unit configures 1 / 2 of Pmax as the maximum allowable input power of the power input port, and configures the sum of the actual charging power of the power input port as the maximum total output power of the charging output port. The present invention enables the portable energy storage device to meet the requirements of simultaneous charging and simultaneous power supply by allocating power to the power input port and the charging output port, thereby ensuring a good user experience.

Description

Technical Field

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

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

[0003] Traditional portable energy storage devices can usually only realize the charging or discharging function of a single interface, and cannot meet the needs of charging or powering multiple devices at the same time. Although portable energy storage devices that can be connected to multiple devices at the same time have been developed in the prior art, how to reasonably allocate appropriate power to each device to avoid overloading or damaging the device is also an urgent problem to be solved.

[0004] In addition, when the portable energy storage device in the prior art is in the charging and discharging state at the same time, there is no appropriate charging and discharging power distribution rule, which causes the internal circuit board to be in a high-load state and easily generates high heat, thereby causing loss of battery performance of the portable energy storage device and may even damage the battery of the connected device due to voltage instability. Summary of the invention

[0005] In view of the defects in the prior art, the purpose of the present invention is to provide a portable energy storage device capable of simultaneous charging and discharging of multiple ports, and a corresponding charging and discharging power allocation method. Through the ingenious design of power allocation rules, the portable energy storage device can realize simultaneous charging and discharging, as well as simultaneous charging and discharging of multiple ports in a safe operating state.

[0006] In order to achieve the above-mentioned object of the invention, the present invention provides the following technical solutions:

[0007] According to a first aspect of the present invention, there is provided a portable energy storage device capable of multi-port simultaneous charging and discharging, comprising a power configuration unit, at least two power input ports, and at least two charging output ports, wherein the power configuration unit is used to configure power for the power input port connected to a charging device and the charging output port connected to a powered device, and a state when the power input port is connected to the charging device and the charging output port is also connected to the powered device is defined as a charging and discharging state;

[0008] The maximum allowable operating power of the portable energy storage device in the state of charging and discharging is defined as Pmax. The power configuration unit configures 1 / 2 of Pmax as the maximum allowable input power of the power input port, and configures the sum of the actual charging power of the power input port as the maximum total output power of the charging output port. The maximum allowable input power of the power input port is defined as Pmax_in, and the maximum total output power of the charging output port is defined as Pmax_out. Then Pmax_in=Pmax / 2, Pmax_out=the sum of the actual charging power of the power input port, and Pmax_out≤Pmax_in;

[0009] When the sum of the maximum allowable charging powers of the power input ports connected to the charging device is ≤Pmax_in, the power configuration unit configures all of the power input ports to operate at their maximum allowable charging powers, where the maximum allowable charging power is the smaller value of the preset maximum charging power of the power input port and the charging power that the charging device can provide after the charging device is plugged into the port; when the sum of the maximum allowable charging powers of the power input ports connected to the charging device is >Pmax_in, the power configuration unit configures the power input ports to use Pmax_in as the sum of the operating powers;

[0010] When the sum of the preset powers of the charging output ports connected to the powered device is ≤Pmax_out, the power configuration unit allocates the corresponding preset power to each charging output port connected to the powered device, and the preset power is the smaller value of the maximum output power of the charging output port and the load requested power; when the sum of the preset powers of the charging output ports connected to the powered device is >Pmax_out, the sum of the powers allocated to the charging output ports by the power configuration unit is Pmax_out.

[0011] Preferably, when the sum of the maximum allowed charging powers of the power input ports connected to the charging device is greater than Pmax_in, the power configuration unit configures the power input ports to use Pmax_in as the sum of the operating powers, and performs power configuration according to the following rules:

[0012] If the number of the power input port connected to the charging device is 1, the power configuration unit configures the power input port to use Pmax_in as the operating power;

[0013] If the number of power input ports connected to the charging device is N, where N is a positive integer and ≥ 2, then:

[0014] When the maximum allowable charging power of each power input port is greater than Pmax_in / N, the power configuration unit configures these power input ports to operate at Pmax_in / N;

[0015] When the maximum allowable charging power of some power input ports is ≤ Pmax_in / N, the power configuration unit performs the first power configuration for these power input ports, so that these power input ports operate at the maximum allowable charging power. Assuming that the total power occupied by these power input ports is B1, the remaining power that can be configured by the power configuration unit is P1=Pmax_in-B1, and the number of power input ports with remaining unallocated power is M1=N-the number of power input ports configured to operate at the maximum allowable charging power for the first time. Then, for the remaining M1 power input ports:

[0016] If the maximum allowable charging power is greater than P1 / M1, the power configuration unit makes the remaining M1 power input ports all operate at P1 / M1;

[0017] If the maximum allowable charging power of some power input ports is still ≤ P1 / M1, the power configuration unit configures the power according to the following rules. In the following rules, after the power configuration unit performs the kth power configuration, the total power occupied by the power input ports that are configured to operate at the maximum allowable charging power for the kth time is B k , the remaining power that can be configured by the power configuration unit is P k , the number of power input ports with remaining unallocated power is M k , k is a positive integer and k ≥ 1:

[0018] The remaining M k For the maximum allowable charging power ≤ P k / M k The power input ports of the power configuration unit perform the k+1th power configuration to make these power input ports operate at the maximum allowed charging power. Assuming that the power occupied by these power input ports is B k+1 , the remaining power that can be configured by the power configuration unit is P k+1 =Pmax_in-B1-…-B k+1 , the number of power input ports with remaining unallocated power M k+1 =M k −The number of power input ports that are configured to operate at the maximum allowed charging power for the k+1th time; in this rule, after the k+1th power configuration, the remaining M k+1 The maximum allowable charging power of each power input port is greater than P k+1 / M k+1 , that is, terminate the rule, and the power configuration unit makes the remaining M k+1 Each power input port is P k+1 / M k+1 For operating power.

[0019] Preferably, when the sum of the preset powers of the charging output ports connected to the powered device is greater than Pmax_out, the sum of the powers allocated to the charging output ports by the power configuration unit is Pmax_out, and the power configuration is performed according to the following rules:

[0020] The charging output ports are pre-configured with a priority order for power allocation, and each charging output port is pre-configured with a minimum output power and a maximum output power, 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 is ≤ the maximum output power of the port, and the maximum output power of each charging output port is ≤ Pmax_out;

[0021] If the sum of the minimum output powers of the charging output ports connected to the powered device = Pmax_out, the power configuration unit allocates the corresponding minimum output power to each charging output port connected to the powered device;

[0022] If the sum of the minimum output powers of the charging output ports connected to the powered device is less than Pmax_out and less than the sum of the preset powers of the charging output ports, the power configuration unit allocates the remaining power according to the priority order of the charging output ports after the minimum output powers of the charging output ports are met, and the remaining power = Pmax_out - the sum of the minimum output powers of the charging output ports.

[0023] Preferably, when the sum of the minimum output powers of the charging output ports connected to the powered device is less than Pmax_out and less than the sum of the preset powers of the charging output ports, the power configuration unit allocates the remaining power according to the priority order of the charging output ports according to the following rules after the minimum output powers of the charging output ports are met:

[0024] The number of charging output ports connected to the powered device is defined as Y. When Y ≥ 2 and the Y charging output ports have different priorities, the charging output ports are sorted from high to low in order of priority, and the charging output ports are defined as the first charging output port to the Yth charging output port in sequence, and their minimum output powers are defined as Pmin_c1 to Pmin_cY, respectively, and the smaller values ​​of their maximum output powers and the load requested powers are defined as the first preset power to the Yth preset power, respectively;

[0025] Define the initial amount of residual power as P 0_out , P 0_out =Pmax_out-(Pmin_c1+…+Pmin_cY), when performing the first round of remaining power allocation, the power allocation unit uses (Pmin_c1+remaining power P 0_out) and the first preset power is the smaller value as the total power obtained by the first charging output port. After the first round of residual power allocation, the residual power obtained by the first charging output port is defined as C1, C1=the total power obtained by the first charging output port allocation-Pmin_c1, and the residual power remaining after the first round of residual power allocation 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 to distribute the remaining power according to the following rules until the remaining remaining power P k_out = 0, thus ending the power allocation: In the kth round of remaining power allocation, the power allocation unit uses (Pmin_ck + remaining power P k-1_out ) and the kth preset power is the smaller value of the total power obtained by the kth charging output port. After the kth round of remaining power allocation is defined, the remaining power obtained by the kth charging output port is C k , C k = the total power obtained by the kth charging output port allocation - Pmin_ck, and the remaining power after the kth round of residual power allocation is defined as P k_out , P k_out =P 0_out -C1-…-C k , where k is a positive integer and k ≥ 2.

[0026] Preferably, when the sum of the minimum output powers of the charging output ports connected to the powered device is less than Pmax_out and less than the sum of the preset powers of the charging output ports, the power configuration unit allocates the remaining power according to the priority order of the charging output ports according to the following rules after the minimum output powers of the charging output ports are met:

[0027] Define the number of charging output ports connected to the powered device as Y. Among the Y charging output ports, the number of charging output ports with the same lowest priority is x, and the remaining Yx charging output ports have different priorities. Then:

[0028] When Y≥2 and Y=x, that is, the Y charging output ports all have the same lowest priority, the power configuration unit first satisfies the minimum output power of the charging output ports, and then evenly distributes the remaining power;

[0029] When Y≥3, and 2≤x<Y, the charging output ports are defined as the first charging output port to the Yth charging output port in descending order according to the priority, wherein the priorities of the Y-x+1th charging output port to the Yth charging output port are the same, and the minimum output powers of these charging output ports are defined as Pmin_c1 to Pmin_cY in order, and the smaller values ​​of their maximum output powers and the load request powers are defined as the first preset power to the Yth preset power; the initial amount of the remaining power is defined as P 0_out , P 0_out =Pmax_out-(Pmin_c1+…+Pmin_cY), the remaining power allocation rule is:

[0030] When performing the first round of remaining power allocation, the power allocation unit uses (Pmin_c1 + remaining power P 0_out ) and the first preset power is the smaller value as the total power obtained by the first charging output port. After the first round of residual power allocation, the residual power obtained by the first charging output port is defined as C1, C1=the total power obtained by the first charging output port allocation-Pmin_c1, and the residual power remaining after the first round of residual power allocation 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 yet allocated the remaining power, the power configuration unit will allocate the remaining power P 1_out Evenly distributed to these x charging output ports, the power distribution ends; if P 1_out > 0 and there are > x charging output ports to which the remaining power has not been allocated, the power configuration unit continues to allocate the remaining power according to the following remaining power allocation rule until condition 1 or condition 2 is met:

[0031] The remaining power allocation rule is: in the kth round of remaining power allocation, the power allocation unit is (Pmin_ck + remaining power P k-1_out ) and the kth preset power is the smaller value of the total power obtained by the kth charging output port. After the kth round of remaining power allocation is defined, the remaining power obtained by the kth charging output port is C k , C k = the total power obtained by the kth charging output port allocation - Pmin_ck, and the remaining power after the kth round of residual power allocation is defined as P k_out , P k_out =P 0_out -C1-…-C k ;

[0032] The first condition is: the remaining residual power P k_outis 0; the second condition is: the remaining residual power P k_out > 0 and at this time only x charging output ports have not yet allocated the remaining power; if the condition 1 is reached first, the power allocation ends; if the condition 2 is reached first, the remaining power P k_out The power is evenly distributed to the remaining x charging output ports, and the power allocation is completed, where k is a positive integer and k≥2.

[0033] Preferably, the number of the power input ports is 2, the number of the charging output ports is 4, the 2 power input ports are bidirectional ports capable of both charging and discharging, and 2 of the charging output ports are bidirectional ports.

[0034] 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 power input port and the charging output port are arranged on the circuit boards, and the power configuration unit is arranged on the main control board.

[0035] Preferably, the power configuration unit calculates the real-time power requirements of each power input port and charging output port by reading preset parameters of the power input port and the charging output port and configures the charging power and discharging power of each power input port and the charging output port accordingly, and the preset parameters include current and voltage.

[0036] Preferably, the charging and discharging interface circuit board and the main control board are both provided with protection circuits, and the protection circuits include 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.

[0037] According to a second aspect of the present invention, a charging and discharging power allocation method for a portable energy storage device is provided, which is applied to a portable energy storage device capable of simultaneously charging and discharging multiple ports, wherein the portable energy storage device comprises a power configuration unit, at least two power input ports, and at least two charging output ports, wherein the power configuration unit is used to configure power for the power input port connected to a charging device and the charging output port connected to a powered device, and defines a state when the power input port is connected to a charging device and the charging output port is also connected to a powered device as a charging and discharging state;

[0038] The charging and discharging power distribution method comprises:

[0039] The maximum allowable operating power of the portable energy storage device in the state of charging and discharging is defined as Pmax. The power configuration unit configures 1 / 2 of Pmax as the maximum allowable input power of the power input port, and configures the sum of the actual charging power of the power input port as the maximum total output power of the charging output port. The maximum allowable input power of the power input port is defined as Pmax_in, and the maximum total output power of the charging output port is defined as Pmax_out. Then Pmax_in=Pmax / 2, Pmax_out=the sum of the actual charging power of the power input port, and Pmax_out≤Pmax_in;

[0040] When the sum of the maximum allowable charging powers of the power input ports connected to the charging device is ≤Pmax_in, the power configuration unit configures all of the power input ports to operate at their maximum allowable charging powers, where the maximum allowable charging power is the smaller value of the preset maximum charging power of the power input port and the charging power that the charging device can provide after the charging device is plugged into the port; when the sum of the maximum allowable charging powers of the power input ports connected to the charging device is >Pmax_in, the power configuration unit configures the power input ports to use Pmax_in as the sum of the operating powers;

[0041] When the sum of the preset powers of the charging output ports connected to the powered device is ≤Pmax_out, the power configuration unit allocates the corresponding preset power to each charging output port connected to the powered device, and the preset power is the smaller value of the maximum output power of the charging output port and the load requested power; when the sum of the preset powers of the charging output ports connected to the powered device is >Pmax_out, the sum of the powers allocated to the charging output ports by the power configuration unit is Pmax_out.

[0042] Compared with the prior art, the present invention has the following beneficial effects:

[0043] The portable energy storage device capable of simultaneous multi-port charging and discharging and the charging and discharging power distribution method provided by the present invention distribute the power of the power input port and the charging output port, so that the portable energy storage device can meet the requirements of simultaneous charging and simultaneous power supply, thereby ensuring a good user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0045] Figure 1 Schematic diagram of the structure of the portable energy storage device according to the first embodiment of the present invention, in which the number of the power input port and the number of the charging output port are both 2;

[0046] Figure 2This is a partial structural diagram of a portable energy storage device according to a second embodiment of the present invention, in which the number of power input ports is 2;

[0047] Figure 3 This is a partial structural diagram of a portable energy storage device according to a second embodiment of the present invention, in which the number of power input ports is 3;

[0048] Figure 4 This is a partial structural diagram of a portable energy storage device according to a third embodiment of the present invention, in which the number of charging output ports is 2;

[0049] Figure 5 This is a partial structural diagram of a portable energy storage device according to a third embodiment of the present invention, in which the number of charging output ports is 3;

[0050] Figure 6 This is a partial structural diagram of a portable energy storage device according to a third embodiment of the present invention. In this diagram, there are four charging output ports.

[0051] The figure shows:

[0052] 101- first power input port;

[0053] 102- second power input port;

[0054] 103- third power input port;

[0055] 201-power configuration unit;

[0056] 301-first charging output port;

[0057] 302 - second charging output port;

[0058] 303- third charging output port;

[0059] 304-Fourth charging output port DETAILED DESCRIPTION

[0060] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0061] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0062] It should be noted that similar numbers and letters represent similar items in the following figures. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in the subsequent figures. In addition, all directional indications in this application (such as up, down, left, right, front, back, bottom...) are only used to explain the relative position relationship, movement, etc. between the components under a certain specific posture (as shown in the figures). If the specific posture changes, the directional indication will also change accordingly. Furthermore, the descriptions involving "first", "second", etc. in the application are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated.

[0063] In addition, in the present invention, the use of terms such as "those", "sum", and "evenly" does not require that the number of power input ports and charging output ports must be 2 or more, and also includes the case where the number of power input ports and charging output ports is 1. For example, "those power input ports" includes the case of "the one power input port", and "the sum of the maximum allowable charging powers of those power input ports" includes the case of "the maximum allowable charging power of the one power input port". Furthermore, in the present invention, when the two values ​​A and B are equal, either of them is regarded as a smaller value. For example, the so-called "the smaller value of A and B is the maximum allowable charging power" in this patent includes the case where A and B are equal.

[0064] Example 1

[0065] The present embodiment provides a portable energy storage device capable of charging and discharging multiple ports simultaneously. Structurally, the energy storage device is made of a lightweight, high-strength shell material as a whole, and is provided with one or more independent circuit boards inside. The circuit boards are provided with a power input port and a charging output port, and the circuit boards are connected to the main control board through wires. An intelligent control chip is embedded in the main control board, and the chip includes a power configuration unit 201 for executing a power allocation algorithm. The power configuration unit 201 calculates the real-time power demand of each port by reading the current, voltage and other parameters of each port, and adjusts the charging and discharging power of each port accordingly. In addition, circuit elements such as overcurrent protection, overvoltage protection, overtemperature protection and short-circuit protection are provided on the circuit board and the main control board. When an abnormal situation is detected, these protection circuits will respond quickly and cut off the power supply of the relevant circuits. Since the core of this embodiment lies in the power allocation logic of the energy storage device when it is in a charging and discharging mode, it is specifically explained as follows:

[0066] The portable energy storage device capable of multi-port simultaneous charging and discharging provided in this embodiment includes a power configuration unit 201, at least two power input ports, and at least two charging output ports (see Appendix 1). Figure 1 The case where there are two power input ports and two charging output ports is shown). The power input port is used to connect to an external charging device to charge the portable energy storage device itself, and the charging output port is used to connect to an external powered device to charge the powered device using the portable energy storage device. The charging device can be various types of power devices, and the powered device can be various types of electronic devices such as mobile phones, cameras, etc. The power configuration unit 201 is used to allocate power to the power input port connected to the charging device and the charging output port connected to the powered device (it can be understood that for the power input port that is not connected to the charging device and the charging output port that is not connected to the powered device, no power is allocated). The state when the power input port is connected to the charging device and the charging output port is also connected to the powered device is defined as the charging and discharging state. In the charging and discharging state, the maximum allowable operating power of the portable energy storage device is defined as Pmax.

[0067] The power configuration unit 201 configures 1 / 2 of the maximum allowable operating power Pmax of the portable energy storage device as the maximum allowable total input power of the power input port, and configures the total actual charging power of the power input port as the maximum total output power of the charging output port, defines the maximum allowable total input power of the power input port as Pmax_in, and defines the maximum total output power of the charging output port as Pmax_out. Then, when the power input port is connected to a charging device and the charging output port is also connected to a powered device, Pmax_in=Pmax / 2, Pmax_out=the total actual charging power of the power input port and Pmax_out≤Pmax_in, that is, Pmax_out≤Pmax / 2.

[0068] Furthermore, for the power input port:

[0069] 1. When the sum of the maximum allowable charging powers of the power input ports connected to the charging device is ≤ Pmax_in, the power configuration unit 201 configures all of the power input ports to operate at their maximum allowable charging powers (the maximum allowable charging power is the smaller value of the maximum charging power preset for the power input port and the charging power that the charging device can provide after the charging device is plugged into the port). For example:

[0070] (1) When only one power input port is plugged with a charging device, assuming that the charging power that the charging device can provide is 60 W, and the maximum charging power pre-set for the power input port is 70 W. Since the charging power that the charging device can provide is less than the maximum charging power pre-set for the power input port, the charging power that the charging device can provide is the maximum allowable charging power of the power input port, i.e., 60 W. Assuming that the maximum allowable input power Pmax_in of the portable energy storage device is 100 W, since the maximum allowable charging power of the port is less than Pmax_in, the power configuration unit 201 configures the power input port to operate at the maximum allowable charging power, i.e., 60 W.

[0071] (2) When charging devices are inserted into the two power input ports, the two power input ports are defined as the first power input port 101 and the second power input port 102 for the sake of distinction and convenience of expression, and the maximum allowable charging powers of the first power input port 101 and the second power input port 102 are defined as Pmax_c1_in and Pmax_c2_in, respectively. When the maximum allowable input power Pmax_in of the portable energy storage device is 120W, the maximum allowable charging power Pmax_c1_in of the first power input port 101 is 50W, and the maximum allowable charging power Pmax_c2_in of the second power input port 102 is 60W, because Pmax_c1_in+Pmax_c2_in is 110W, which is less than Pmax_in (i.e., 120W), the power configuration unit 201 configures the first power input port 101 to operate at Pmax_c1_in, i.e., 50W, and the second power input port 102 to operate at Pmax_c2_in, i.e., 60W.

[0072] 2. When the sum of the maximum allowed charging powers of the power input ports connected to the charging device is greater than Pmax_in, the power configuration unit 201 configures the power input ports to use Pmax_in as the sum of the operating powers. For example:

[0073] (1) When only one power input port is plugged into a charging device, assuming that the maximum allowable charging power of the power input port is 120 W and the maximum allowable input power Pmax_in of the portable energy storage device is 100 W, since the maximum allowable charging power of the port is greater than Pmax_in, the power configuration unit 201 configures the power input port to operate at Pmax_in, i.e., 100 W.

[0074] (2) When charging devices are plugged into the two power input ports, assuming that the maximum allowable input power Pmax_in of the portable energy storage device is 120 W, the maximum allowable charging power Pmax_c1_in of the first power input port 101 is 70 W, and the maximum allowable charging power Pmax_c2_in of the second power input port 102 is 60 W, since Pmax_c1_in+Pmax_c2_in is 130 W, which is greater than Pmax_in (i.e., 120 W), the power configuration unit 201 configures the first power input port 101 and the second power input port 102 to use Pmax_in (i.e., 120 W) as the sum of the operating powers.

[0075] By limiting the operating power of the power input port as above, it can be ensured that the sum of the operating powers of the power input ports can achieve maximum input under the premise of ≤Pmax_in.

[0076] Furthermore, for the charging output port:

[0077] 1. When the sum of the preset powers of the charging output ports connected to the powered device is ≤Pmax_out, the power configuration unit allocates the corresponding preset power to each charging output port connected to the powered device. The preset power is the smaller value between the maximum output power of the charging output port and the load request power (the so-called load request power refers to the power required by the powered device as a load under normal operation. The load request power will vary depending on the connected powered device. The so-called maximum output power refers to the maximum power allowed to be output by the charging output port, which is configured in advance). For example:

[0078] (1) When there is a charging output port connected to a powered device, assuming that the maximum total output power Pmax_out of the portable energy storage device is 100W, the load request power of the charging output port is 100W, and the maximum output power of the port is 50W. Since the load request power of the port is greater than the maximum output power of the port, the preset power of the port is its maximum output power, i.e., 50W. Since the preset power is less than Pmax_out, the power allocated by the power configuration unit to the charging output port is its preset power, i.e., 50W. Further, assuming that the maximum total output power Pmax_out of the portable energy storage device is 100W, the load request power of the charging output port is 50W, and the maximum output power of the port is 50W. Since the load request power of the port is equal to the maximum output power of the port, the preset power of the port is its maximum output power or load request power, i.e., 50W. Since the preset power is less than Pmax_out, the power allocated by the power configuration unit 201 to the charging output port is its preset power, i.e., 50W.

[0079] (2) When two charging output ports are connected to a powered device, assuming that the preset power of one charging output port is 50 W and the preset power of the other charging output port is 100 W, the maximum total output power Pmax_out of the portable energy storage device is 200 W. Since the sum of the preset powers of the two charging output ports is less than Pmax_out, the power configuration unit 201 allocates the powers of the two charging output ports to their preset powers, i.e., 50 W and 100 W, respectively.

[0080] 2. When the sum of the preset powers of the charging output ports connected to the powered device is greater than Pmax_out, the sum of the powers allocated by the power configuration unit to the charging output ports is Pmax_out.

[0081] (1) When there is a charging output port connected to a powered device, assuming that the maximum total output power Pmax_out of the portable energy storage device is 100W, the load request power of the charging output port is 150W, and the maximum output power of the port is 120W. Since the load request power of the port is greater than the maximum output power of the port, the preset power of the port is its maximum output power, i.e., 120W. Since the preset power is greater than Pmax_out, the power allocated to the charging output port by the power configuration unit is Pmax_out, i.e., 100W.

[0082] (2) When two charging output ports are connected to a powered device, assuming that the preset power of one charging output port is 150 W and the preset power of the other charging output port is 100 W, the maximum total output power Pmax_out of the portable energy storage device is 200 W. Since the sum of the preset powers of the two charging output ports is greater than Pmax_out, the sum of the powers allocated to the two charging output ports by the power configuration unit 201 is Pmax_out, i.e., 200 W.

[0083] By limiting the power of the charging output port as above, it can be ensured that the sum of the powers allocated to the charging output port can achieve maximum output under the premise of ≤Pmax_out.

[0084] The portable energy storage device capable of multi-port simultaneous charging and discharging provided in this embodiment ensures the safety of the portable energy storage device in the case of charging and discharging by limiting the maximum allocated power of the power input port and the charging output port. In addition, this embodiment configures the power of the power input port and the charging output port so that the power input port and the charging output port can respectively achieve the maximum input and maximum output while satisfying the aforementioned safety.

[0085] Example 2

[0086] This embodiment provides a portable energy storage device capable of simultaneous multi-port charging and discharging, which is basically the same as the portable energy storage device provided in Embodiment 1, except that this embodiment further elaborates on the power allocation rules of the power input ports therein, especially when the sum of the maximum allowable charging powers of the power input ports connected to the charging device is greater than Pmax_in, and the power configuration unit 201 configures these power input ports to use Pmax_in as the sum of the operating powers, the power allocation rules of these power input ports.

[0087] Based on the convenience of distinction and expression, when only one of the power input ports is plugged into a charging device, the port is defined as the first power input port 101; when two charging devices are plugged in, the first power input port 101 and the second power input port 102 are defined respectively; when three charging devices are plugged in, the first power input port 101, the second power input and the third power input port 103 are defined respectively, and so on. Assuming that the number of power input ports plugged into charging devices is N, the maximum allowable charging powers of the first power input port 101 to the Nth power input port are defined as Pmax_c1_in to Pmax_cN_in respectively. When an external charging device is used to charge the portable energy storage device provided in this embodiment, when the sum of the maximum allowable charging powers of the power input ports connected to the charging device is greater than Pmax_in, the power configuration unit 201 configures the power input ports to use Pmax_in as the sum of the operating powers, and:

[0088] (1) If the number of power input ports connected to the charging device is 1, the power configuration unit 201 configures the power input port to use Pmax_in as the operating power;

[0089] (2) If the number of power input ports connected to the charging device is N, N is a positive integer and N ≥ 2:

[0090] ① When the maximum allowable charging power of each power input port is greater than Pmax_in / N, the power configuration unit 201 configures these power input ports to operate at Pmax_in / N;

[0091] ② When the maximum allowable charging power of some of the N power input ports is ≤ Pmax_in / N, the power configuration unit 201 performs the first power configuration for these power input ports, so that these power input ports operate at the maximum allowable charging power. Assuming that the total power occupied by these power input ports is B1, the remaining power that can be configured by the power configuration unit 201 is P1=Pmax_in-B1, and the number of power input ports with remaining unallocated power is M1=N-the number of power input ports configured to operate at the maximum allowable charging power for the first time. Then, for the remaining M1 power input ports:

[0092] a. If the maximum allowable charging power is greater than P1 / M1, the power configuration unit 201 enables the remaining M1 power input ports to operate at P1 / M1;

[0093] b. If there are still some power input ports with a maximum allowable charging power ≤ P1 / M1, the power configuration unit 201 configures the power according to the following rules (the following rules are defined: after the power configuration unit 201 performs the kth power configuration, the total power occupied by the power input ports that are configured to operate at the maximum allowable charging power for the kth time is B k , the remaining power that can be configured by the power configuration unit 201 is P k , the number of power input ports with remaining unallocated power is M k , k is a positive integer and k ≥ 1):

[0094] The remaining M k For the maximum allowable charging power ≤ P k / M k The power input ports of the power configuration unit 201 perform the k+1th power configuration to make these power input ports operate at the maximum allowed charging power. Assuming that the power occupied by these power input ports is B k+1 , the remaining power P that can be configured by the power configuration unit 201 k+1 =Pmax_in-B1-…-Bk+1 , the number of power input ports with remaining unallocated power M k+1 =M k −The number of power input ports that are configured to operate at the maximum allowed charging power for the k+1th time; in this rule, after the k+1th power configuration, the remaining M k+1 The maximum allowable charging power of each power input port is greater than P k+1 / M k+1 , that is, terminate the rule, and the power configuration unit 201 makes the remaining M k+1 Each power input port is P k+1 / M k+1 run.

[0095] The following provides a better understanding of the technical solution provided in this embodiment by limiting the specific number of power input ports into which the charging device is inserted.

[0096] 1. If only the first power input port 101 is connected to the charging device, the power configuration unit 201 configures the first power input port 101 to operate at Pmax_in. For example, when the maximum allowable input power Pmax_in of the portable energy storage device is 120W, the maximum allowable charging power Pmax_c1_in of the first power input port 101 connected to the charging device is 130W. Since Pmax_c1_in>Pmax_in, the power configuration unit 201 configures the first power input port 101 to operate at Pmax_in, i.e., 120W.

[0097] 2. When the number of power input ports connected to the charging device is N and the maximum allowable charging power of each power input port is greater than Pmax_in / N, then:

[0098] (1) When N=2, Figure 2 As shown, when the first power input port 101 and the second power input port 102 are connected to the charging device, and the maximum allowable charging power of the first power input port 101 and the second power input port 102 are both greater than Pmax_in / 2, the power configuration unit 201 configures the first power input port 101 and the second power input port 102 to operate at Pmax_in / 2. For example, when the maximum allowable input power Pmax_in of the portable energy storage device is 120W, the maximum allowable charging power Pmax_c1_in of the first power input port 101 is 70W, and the maximum allowable charging power Pmax_c2_in of the second power input port 102 is 80W, because Pmax_c1_in and Pmax_c2_in are both greater than 1 / 2 of Pmax_in, that is, 60W, the power configuration unit 201 configures the first power input port 101 and the second power input port 102 to operate at 60W.

[0099] (2) When N=3, Figure 3 As shown, when the first power input port 101, the second power input port 102, and the third power input port 103 are connected to the charging device, and the maximum allowable charging power of the first power input port 101, the second power input port 102, and the third power input port 103 are all greater than Pmax_in / 3, the power configuration unit 201 configures the first power input port 101, the second power input port 102, and the third power input port 103 to operate at Pmax_in / 3. For example, when the maximum allowable input power Pmax_in of the portable energy storage device is 120W, the maximum allowable charging power Pmax_c1_in of the first power input port 101 is 70W, the maximum allowable charging power Pmax_c2_in of the second power input port 102 is 80W, and the maximum allowable charging power Pmax_c3_in of the third power input port 103 is 90W. Since Pmax_c1_in, Pmax_c2_in, and Pmax_c3_in are all greater than 1 / 3 of Pmax_in, i.e., 40W, the power configuration unit 201 configures the first power input port 101, the second power input port 102, and the third power input port 103 to operate at Pmax_in / 3, i.e., 40W.

[0100] 3. When the number of power input ports connected to the charging device is N and the maximum allowable charging power of some power input ports is ≤ Pmax_in / N, then:

[0101] (1) When N=2, Figure 2 As shown, when the first power input port 101 and the second power input port 102 are connected to the charging device, if the maximum allowable charging power of one of the power input ports is ≤Pmax_in / 2, then for the power input port, the power configuration unit 201 performs the first power configuration to make the power input port operate at the maximum allowable charging power. Assuming that the power occupied by the power input port is B1, the remaining power that can be configured by the power configuration unit 201 is P1=Pmax_in-B1, and the number of power input ports with remaining unallocated power is M1=N-the number of power input ports configured to operate at the maximum allowable charging power for the first time=2-1=1. For the remaining power input port, since its maximum allowable charging power +B1>Pmax_in, it must be greater than Pmax_in-B1, that is, it must be greater than P1, so its maximum allowable charging power must be greater than P1 / M1, so the power configuration unit 201 makes the remaining power input port operate at P1 / M1, that is, P1.

[0102] For example, when the maximum allowable input power Pmax_in of the portable energy storage device is 120W, the maximum allowable charging power Pmax_c1_in of the first power input port 101 is 50W, and the maximum allowable charging power Pmax_c2_in of the second power input port 102 is 80W, because Pmax_c1_in+Pmax_c2_in is 130W, which is greater than Pmax_in (i.e., 120W), the power configuration unit 201 configures the sum of the operating powers of the first power input port 101 and the second power input port 102 to be 120W. Since the maximum allowable charging power of the first power input port 101 is 50W, which is less than Pmax_in / 2 (i.e., 60W), the power configuration unit 201 performs the first power configuration for the first power input port 101, so that the first power input port 101 operates at the maximum allowable charging power Pmax_c1_in, i.e., 50W. The total power B1 occupied by the first power input port 101 is 50W. The remaining power that can be configured by the power configuration unit 201 is P1=Pmax_in-B1=120W-50W=70W. The number of power input ports with remaining unallocated power is M1=2−the number of power input ports configured to operate at the maximum allowable charging power for the first time=2-1=1. For the remaining power input port, i.e., the second power input port 102, since its maximum allowable charging power Pmax_c2_in is 80W, which is greater than P1 / M1 (i.e., 70W), the power configuration unit 201 configures the second power input port 102 to operate at 70W.

[0103] (2) When N=3, Figure 3 As shown, when the first power input port 101, the second power input port 102 and the third power input port 103 are all connected to the charging device:

[0104] ① If the maximum allowable charging power of two of the power input ports is ≤ Pmax_in / 3, then for the two power input ports, the power configuration unit 201 performs the first power configuration to make the two power input ports operate at the maximum allowable charging power. Assuming that the power occupied by the two power input ports is B1, the remaining power that can be configured by the power configuration unit 201 is P1=Pmax_in-B1, and the number of power input ports with remaining unallocated power is M1=3-the number of power input ports configured to operate at the maximum allowable charging power for the first time=3-2=1. For the remaining power input port, since its maximum allowable charging power +B1>Pmax_in, it must be greater than Pmax_in-B1 (that is, it must be greater than P1), so its maximum allowable charging power is greater than P1 / M1 (that is, P1). Therefore, the power configuration unit 201 makes the remaining power input port operate at P1 / M1 (that is, P1) as the power.

[0105] For example, when the maximum allowable input power Pmax_in of the portable energy storage device is 120W, the maximum allowable charging power Pmax_c1_in of the first power input port 101 is 30W, the maximum allowable charging power Pmax_c2_in of the second power input port 102 is 40W, and the maximum allowable charging power Pmax_c3_in of the third power input port 103 is 60W, because Pmax_c1_in+Pmax_c2_in+Pmax_c3_in is 130W, which is greater than Pmax_in (i.e., 120W), the power configuration unit 201 configures the sum of the operating powers of the first power input port 101, the second power input port 102, and the third power input port 103 to be 120W. Since the maximum allowable charging powers of the first power input port 101 and the second power input port 102 are 30W and 40W respectively, which are in the range of ≤Pmax_in / 3 (i.e. 40W), the power configuration unit 201 performs the first power configuration for the first power input port 101 and the second power input port 102, so that the first power input port 101 and the second power input port 102 operate at the maximum allowable charging powers Pmax_c1_in and Pmax_c2_in, i.e. 30W and 40W respectively. The first power input port 101 and the second power input port 102 occupy a total of The used power B1 is 70 W, and the remaining power that can be configured by the power configuration unit 201 is P1=Pmax_in-B1=120 W-70 W=50 W. The number of power input ports with remaining unallocated power is M1=3−the number of power input ports configured for the first time to operate with the maximum allowed charging power=3-2=1. For the remaining 1 power input port, i.e., the third power input port 103, since its maximum allowed charging power Pmax_c3_in is 60 W, which is greater than P1 / M1 (i.e., 50 W), the power configuration unit 201 configures the third power input port 103 to operate with 50 W.

[0106] ② If the maximum allowable charging power of only one of the power input ports is ≤ Pmax_in / 3, then for this power input port, the power configuration unit 201 performs the first power configuration to make the power input port operate at the maximum allowable charging power. Assuming that the total power occupied by the power input port is B1, the remaining power that can be configured by the power configuration unit 201 is P1=Pmax_in-B1, and the number of power input ports with remaining unallocated power is M1=3-the number of power input ports configured to operate at the maximum allowable charging power for the first time=3-1=2. For the remaining two power input ports, if their maximum allowable charging powers are both greater than P1 / M1, the power configuration unit 201 makes the remaining two power input ports operate at P1 / M1; if there is a power input port with a maximum allowable charging power ≤ P1 / M1, the power configuration unit 201 performs the second power configuration to make the power input port run at the maximum allowed charging power. Assuming that the total power occupied by the power input port is B2, the remaining power P2 that can be configured by the power configuration unit 201 = Pmax_in-B1-B2, and the number of power input ports with remaining unallocated power M2 = M1-the number of power input ports configured to run at the maximum allowed charging power in the second time = 2-1=1. Since the maximum allowed charging power of the remaining power input port + B1 + B2 > Pmax_in, it must be greater than Pmax_in-B1-B2 (that is, it must be greater than P2). Therefore, its maximum allowed charging power is greater than P2 / M2 (that is, P2). Therefore, the power configuration unit 201 makes the remaining power input port run at P2 / M2, that is, P2, as the operating power.

[0107] For example, when the maximum allowable input power Pmax_in of the portable energy storage device is 120W, the maximum allowable charging power Pmax_c1_in of the first power input port 101 is 30W, the maximum allowable charging power Pmax_c2_in of the second power input port 102 is 50W, and the maximum allowable charging power of the third power input port 103 is 60W, because Pmax_c1_in+Pmax_c2_in+Pmax_c3_in is 140W, which is greater than Pmax_in (i.e., 120W), the power configuration unit 201 configures the sum of the operating powers of the first power input port 101, the second power input port 102, and the third power input port 103 to be 120W. Since the maximum allowable charging power of only the first power input port 101 is 30W, which is less than Pmax_in / 3 (i.e., 40W), the power configuration unit 201 performs the first power configuration to make the first power input port 101 operate at its maximum allowable charging power Pmax_c1_in, i.e., 30W. The total power B1 occupied by the first power input port 101 is 30W, and the remaining power that can be configured by the power configuration unit 201 is P1=Pmax_in-B1=120W-30W=90W. The remaining power input port 101 that has not been allocated power is P1=Pmax_in-B1=120W-30W=90W. The number of ports is M1=3−the number of power input ports configured for the first time to operate with the maximum allowed charging power=3-1=2. For the remaining two power input ports, namely the second power input port 102 and the third power input port 103, since their maximum allowed charging powers Pmax_c2_in and Pmax_c3_in are 50W and 60W respectively, both greater than P1 / M1=45W, the power configuration unit 201 configures the second power input port 102 and the third power input port 103 to operate with P1 / M1, i.e. 45W.

[0108] For another example, when the maximum allowable input power Pmax_in of the portable energy storage device is 120W, the maximum allowable charging power Pmax_c1_in of the first power input port 101 is 30W, the maximum allowable charging power Pmax_c2_in of the second power input port 102 is 45W, and the maximum allowable charging power of the third power input port 103 is 60W, because Pmax_c1_in+Pmax_c2_in+Pmax_c3_in is 135W, which is greater than Pmax_in (i.e., 120W), the power configuration unit 201 configures the sum of the operating powers of the first power input port 101, the second power input port 102, and the third power input port 103 to be 120W. Since the maximum allowable charging power of the first power input port 101 is 30W, which is less than Pmax_in / 3 (i.e., 40W), the power configuration unit 201 performs the first power configuration for the first power input port 101, so that the first power input port 101 operates with its maximum allowable charging power Pmax_c1_in, i.e., 30W. The total power B1 occupied by the first power input port 101 is 30W. The remaining power that can be configured by the power configuration unit 201 is P1=Pmax_in-B1=120W-30W=90W. The number of power input ports with remaining unallocated power is M1=3−the number of power input ports configured to operate with the maximum allowable charging power for the first time=3-1=2. Therefore, for the remaining two power input ports, i.e., the second power input port 102 and the third power input port 103, due to the second power input port 102's The maximum allowable charging power Pmax_c2_in is 45W, which is within the range of ≤P1 / M1 (i.e., 45W). Therefore, the power configuration unit 201 performs the second power configuration to make the second power input port 102 operate at its maximum allowable charging power Pmax_c2_in, i.e., 45W. The power B2 occupied by the second power input port 102 is 45W. The remaining power P2 that can be configured by the power configuration unit 201 = Pmax_in-B1-B2 = 45W. The number of power input ports with remaining unallocated power M2 = M1-the number of power input ports that operate at the maximum allowable charging power in the second configuration = 1. Since the maximum allowable charging power of the third power input port 103 is 60W, which is greater than P2 / M2 (i.e., P2 = 45W), the power configuration unit 201 makes the remaining third power input port 103 operate at 45W.

[0109] The above provides the power distribution rules of the portable energy storage device provided in this embodiment when the number of power input ports plugged into the charging device is 1, 2, or 3. Based on the above examples, those skilled in the art can further deduce the relevant power distribution rules when the number of power input ports connected to the charging device is other, and this application will not go into details.

[0110] The portable energy storage device provided in this embodiment further achieves the following technical effects by further restricting the power allocation rules of the power input port: the power input ports can be used selectively or multiple at the same time. When one is used selectively, by comparing the relationship between the maximum allowable input power of the energy storage device and the maximum allowable charging power of the port, the energy storage device can achieve maximum charging power input under the premise of ensuring safety; when multiple power input ports are used simultaneously, the aforementioned power allocation logic is used to ensure that each power input channel can work evenly, avoiding the situation where one channel works at high power while other channels have very low power or do not work, resulting in internal heat being concentrated in one part, thereby improving the safety of the portable energy storage device during charging and extending its service life. In addition, the design also enables multiple charging devices that supply power to share power more evenly, thereby avoiding the charging device from working under full load, and thus greatly extending the service life of the charging device.

[0111] Example 3

[0112] This embodiment provides a portable energy storage device capable of simultaneously charging and discharging multiple ports, which is basically the same as the portable energy storage device provided in Embodiment 1, except that this embodiment further elaborates on the power allocation rule of the charging output ports, especially when the sum of the preset powers of the charging output ports connected to the powered device is greater than Pmax_out, and the sum of the powers allocated to the charging output ports by the power configuration unit 201 is Pmax_out, the power allocation rule of the charging output ports.

[0113] In this embodiment, the priority order of power allocation is pre-set for the charging output ports. For charging output ports with higher priority, the power configuration unit 201 will give priority to satisfying the required power of the charging output port when performing power configuration. Each charging output port is pre-set with a minimum output power and a maximum output power. The sum of the minimum output powers of the pre-configured charging output ports is ≤Pmax_out, and the minimum output power of each charging output port is ≤the maximum output power of the port, and the maximum output power of each charging output port is ≤Pmax_out. The number of charging output ports connected to the powered device is defined as Y. Since the maximum output power of each charging output port is ≤Pmax_out, when the sum of the preset powers of the charging output ports connected to the powered device is >Pmax_out, Y≥2.

[0114] 1. When the Y charging output ports have different priorities:

[0115] The priority is sorted from high to low, and the charging output ports are defined in sequence as the first charging output port 301 to the Yth charging output port, and their minimum output powers are defined in sequence as Pmin_c1 to Pmin_cY, and their maximum output powers and the smaller values ​​of the load request powers are defined in sequence as the first preset power to the Yth preset power.

[0116] 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 connected to the powered device, the power configuration unit allocates the corresponding minimum output power to each charging output port connected to the powered device.

[0117] If (Pmin_c1+…+Pmin_cY)<Pmax_out<(first preset power+…+first preset power), the power configuration unit first satisfies the minimum output power of the charging output ports (i.e., the power configuration unit first allocates the corresponding minimum output power to each charging output port), and then allocates the remaining power in order of priority, and defines the initial amount of the remaining power as P 0_out , P 0_out =Pmax_out-(Pmin_c1+…+Pmin_cY), the distribution rule of the remaining power is:

[0118] When performing the first round of remaining power allocation, the power allocation unit uses (Pmin_c1 + remaining power P 0_out ) and the first preset power is the smaller value as the total power obtained by the first charging output port. After the first round of residual power allocation, the residual power obtained by the first charging output port is defined as C1, C1=the total power obtained by the first charging output port allocation-Pmin_c1, and the residual power remaining after the first round of residual power allocation 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 to distribute the remaining power according to the following rules until the remaining remaining power P k_out = 0, thus ending the power allocation: In the kth round of remaining power allocation, the power allocation unit uses (Pmin_ck + remaining power P k-1_out ) and the kth preset power is the smaller value of the total power obtained by the kth charging output port. After the kth round of remaining power allocation is defined, the remaining power obtained by the kth charging output port is C k , C k = the total power obtained by the kth charging output port allocation - Pmin_ck, and the remaining power after the kth round of residual power allocation is defined as P k_out , Pk_out =P 0_out -C1-…-C k , where k is a positive integer and k ≥ 2.

[0119] It can be understood that when Y=2, that is, when two charging output ports with different priorities are connected to the powered device, such as Figure 4 As shown, the two charging output ports are defined as the first charging output port 301 and the second charging output port 302 in order of priority from high to low, and their minimum output powers are defined as Pmin_c1 and Pmin_c2 respectively, and the smaller value of their maximum output power and the load request power is the first preset power and the second preset power respectively.

[0120] If Pmax_out=(Pmin_c1+Pmin_c2), the power allocated by the power configuration unit 201 to the first charging output port 301 and the second charging output port 302 are their minimum output powers respectively.

[0121] If (Pmin_c1+Pmin_c2)<Pmax_out<(first preset power+second preset power), the power configuration unit 201 first satisfies the minimum output power of the first charging output port 301 and the second charging output port 302, and then allocates the remaining power in order of priority, defining the initial amount of the remaining power as P 0_out , P 0_out =Pmax_out-(Pmin_c1+Pmin_c2), the allocation rule is:

[0122] When performing the first round of remaining power allocation, the power configuration unit 201 uses (Pmin_c1+remaining power P 0_out ) and the first preset power is the total power allocated to the first charging output port 301. After the first round of residual power allocation, the residual power C1 obtained by the first charging output port 301 = the total power allocated to the first charging output port 301 - Pmin_c1. The residual power P remaining after the first round of residual power allocation 1_out =P 0_out -C1, if P 1_out =0, the power distribution ends, which means that the total power distributed to the first charging output port 301 is (Pmin_c1+remaining power P 0_out ), the total power allocated and obtained by the second charging output port 302 is the minimum output power.

[0123] 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, so the second round of surplus power allocation is performed. At this time, the power configuration unit 201 is based on (Pmin_c2 + surplus power P 1_out ) is the smaller value of the second preset power and the second preset power, and the total power allocated to the second charging output port 302. It can be understood that since Pmax_out<(first preset power+second preset power), (Pmin_c2+remaining power P 1_out ) must be less than the second preset power, so the power configuration unit 201 directly converts the remaining power P 1_out The total power allocated to the second charging output port 302 is (Pmin_c2+remaining power P 1_out ), 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 = the remaining power P 1_out , the remaining power P after the second round of remaining power allocation 2_out =P 0_out -C1-C2=0, power distribution ends, which means that the power distributed to the first charging output port 301 is the first preset power, and the power distributed to the second charging output port 302 is (Pmin_c2+remaining power P 1_out ).

[0124] Accordingly, when Y=3, that is, three charging output ports with different priorities are connected to the powered device, such as Figure 5 As shown, the charging output ports are defined in order from high to low priority 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 defined in order as Pmin_c1, Pmin_c2, and Pmin_c3, respectively, and the smaller values ​​of their maximum output power and the load request power are the first preset power, the second preset power, and the third preset power, respectively.

[0125] If Pmax_out=(Pmin_c1+Pmin_c2+Pmin_c3), the powers allocated by the power configuration unit 201 to the first, second and third charging output ports 301, 302 and 303 are their minimum output powers respectively.

[0126] If (Pmin_c1+Pmin_c2+Pmin_c3)<Pmax_out<(first preset power+second preset power+third preset power), the power configuration unit 201 first satisfies the minimum output power of the charging output ports, and then allocates the remaining power in order of priority, defining 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:

[0127] When performing the first round of remaining power allocation, the power configuration unit 201 uses (Pmin_c1+remaining power P 0_out ) and the first preset power is the total power allocated to the first charging output port 301. After the first round of residual power allocation, the residual power C1 obtained by the first charging output port 301 = the total power allocated to the first charging output port 301 - Pmin_c1. The residual power P remaining after the first round of residual power allocation 1_out =P 0_out -C1, if P 1_out =0, the power distribution ends, which means that the total power distributed to the first charging output port 301 is (Pmin_c1+remaining power P 0_out ), the total power allocated to the second charging output port 302 and the third charging output port 303 is the minimum output power.

[0128] 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, so the second round of remaining power allocation is performed. At this time, the power configuration unit 201 is based on (Pmin_c2 + remaining power P 1_out ) and the second preset power are smaller than the total power allocated to the second charging output port 302. 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 remaining power P after the second round of remaining power allocation 2_out =P 0_out -C1-C2, if P 2_out =0, the power distribution ends, which means that the total power distributed to the first charging output port 301 is the first preset power, and the total power distributed to the second charging output port 302 is (Pmin_c2+remaining power P 1_out ), the total power allocated and obtained by the third charging output port 303 is the minimum output power.

[0129] 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, so the third round of remaining power allocation is performed. At this time, the power configuration unit 201 is (Pmin_c3 + remaining power P 2_out ) and the third preset power is the smaller value of the total power allocated to the third charging output port 303. It can be understood that since Pmax_out<(first preset power+second preset power+third preset power), (Pmin_c3+remaining power P 2_out ) must be less than the third preset power, so the power configuration unit 201 directly converts the remaining power P 2_out The total power allocated to the third charging output port 303 is (Pmin_c3+remaining power P 2_out ), after the third round of remaining power distribution, 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 = the remaining power P 3_out , the remaining power P after the third round of remaining power allocation 3_out =P 0_out -C1-C2-C3=0, the remaining power distribution ends, which means that the total power distributed to the first charging output port 301 is the first preset power, the total power distributed to the second charging output port 302 is the second preset power, and the total power distributed to the third charging output port 303 is (Pmin_c3+remaining power P 2_out ).

[0130] When Y is other values, those skilled in the art can deduce the corresponding power allocation conditions according to the above description.

[0131] Specific numerical values ​​are substituted below to further illustrate the relevant power allocation rules when the charging output ports have different priorities, so as to enhance the understanding of the relevant technical solutions of this embodiment.

[0132] (1) When Y=2. According to the priority order of the charging output ports connected to the powered device, the two charging output ports are defined as the first charging output port 301 and the second charging output port 302, and the following presets are performed as shown in Table 1 below:

[0133] Table 1

[0134] Related parameters The first charging output port 301 Second charging output port 302 Minimum output power Pmin 20W 30W Maximum output power Pmax 40W 50W Load Request Power 30W 60W Preset power 30W 50W

[0135] Assuming that Pmax_out=100W, since Pmax_out>(first preset power+second preset power), the power allocated by the power configuration unit 201 to the first and second charging output ports 301 and 302 are their preset powers 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.

[0136] Assuming that 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 are their minimum output powers, 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.

[0137] Assuming Pmax_out=55W, since (Pmin_c1+Pmin_c2)<Pmax_out<(first preset power+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, firstly distributes power according to the minimum output power of the first and second charging output ports 301 and 302, and the remaining power P after distribution is 0_out =Pmax_out-(Pmin_c1+Pmin_c2)=55W-50W=5W. The allocation rule of the remaining 5W power is:

[0138] The first round of remaining power allocation is performed, and the power allocation unit 201 allocates (Pmin_c1+remaining power P 0_out ) and the first preset power is the smaller value of the total power allocated to the first charging output port 301, so (Pmin_c1+remaining power P 0_out )=25W, the first preset power is 30W, so the power configuration unit 201 uses 25W as the total power allocated to the first charging output port 301, 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=25W-20W=5W, and the remaining power P after the first round of residual power allocation is 1_out =P 0_out -C1=5W-5W=0, because P 1_out =0, the power distribution ends, which means that the total power distributed to the first charging output port 301 is (Pmin_c1+remaining power P 0_out ) is 25W, and the total power allocated to the second charging output port 302 is its minimum output power, that is, 30W.

[0139] Assuming Pmax_out=70W, since (Pmin_c1+Pmin_c2)<Pmax_out<(first preset power+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. The remaining power P at this time is 0_out =Pmax_out-(Pmin_c1+Pmin_c2)=70W-50W=20W. The allocation rule of the remaining 20W power is:

[0140] The first round of remaining power allocation is performed, and the power allocation unit 201 allocates (Pmin_c1+remaining power P 0_out ) and the first preset power is the smaller value of the total power allocated to the first charging output port 301, so (Pmin_c1+remaining power P 0_out ) = 40W, the first preset power is 30W, so the power configuration unit 201 uses 30W as the total power allocated to the first charging output port 301, 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, and the remaining power P after the first round of remaining power allocation is 1_out =P 0_out -C1=20W-10W=10W, because P 1_out > 0, so the second round of remaining power allocation is performed. At this time, the power allocation unit 201 allocates (Pmin_c2 + remaining power P 1_out ) is the smaller value of the second preset power and the second preset power, and the total power allocated to the second charging output port 302. It can be understood that since Pmax_out<(first preset power+second preset power), (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), so the power configuration unit 201 directly converts the remaining power P 1_out That is, 10W is allocated to the second charging output port 302 so that the total power allocated to the second charging output port 302 is (Pmin_c2+remaining power P 1_out ) is 40W. 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 = the remaining power P 1_out =10W, the remaining power P after the second round of remaining power allocation 2_out =P 0_out-C1-C2=20W-10W-10W=0, so the remaining power distribution ends, which means that the total power distributed to the first charging output port 301 is the first preset power, i.e., 30W, and the total power distributed to the second charging output port 302 is (Pmin_c2+remaining power P 1_out )That is 40W.

[0141] (2) When Y=3, the three 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 according to the priority order of the charging output ports connected to the powered device, and the following presets are performed as shown in Table 2 below:

[0142] Table 2

[0143] Related parameters The first charging output port 301 Second charging output port 302 The third charging output port 303 Minimum output power Pmin 20W 30W 40W Maximum output power Pmax 40W 50W 100W Load Request Power 30W 60W 100W Preset power 30W 50W 100W

[0144] Assuming that Pmax_out=180W, since Pmax_out=(first preset power+second preset power+third preset power), the power configuration unit 201 allocates the powers of the first, second and third charging output ports 301, 302, 303 to the preset powers of these ports respectively, that is, the power allocated to the first charging output port 301 is 30W, the power allocated to the second charging output port 302 is 50W, and the power allocated to the third charging output port 303 is 100W.

[0145] Assuming that Pmax_out=90W, since Pmax_out=(Pmin_c1+Pmin_c2+Pmin_c3), the power allocated by the power configuration unit 201 to the first, second and third charging output ports 301, 302, 303 is the minimum output power of these ports, that is, the power allocated to the first charging output port 301 is 20W, the power allocated to the second charging output port 302 is 30W, and the power allocated to the third charging output port 303 is 40W.

[0146] Assuming Pmax_out=150W, since (Pmin_c1+Pmin_c2+Pmin_c3)<Pmax_out<(first preset power+second preset power+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 is 0_out =Pmax_out-(Pmin_c1+Pmin_c2+Pmin_c3)=150W-90W=60W. The allocation rule of the remaining 60W power is:

[0147] When performing the first round of remaining power allocation, the power configuration unit 201 uses (Pmin_c1+remaining power P 0_out ) and the first preset power is the smaller value of the total power allocated to the first charging output port 301, so (Pmin_c1+remaining power P 0_out ) = 80W, the first preset power is 30W, because the first preset power < (Pmin_c1 + remaining power P 0_out ), therefore, the power configuration unit 201 uses the first preset power 30W as the total power allocated 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. The remaining remaining power P after the first round of remaining power allocation is 1_out =P 0_out -C1=60W-10W=50W, because P 1_out >0, so the second round of allocation of remaining power continues.

[0148] In the second round of remaining power allocation, the power configuration unit 201 allocates (Pmin_c2 + remaining power P 1_out ) and the smaller value of the second preset power is the total power allocated to the second charging output port 302, because (Pmin_c2+remaining power P 1_out )=80W, the second preset power is 50W, so the power configuration unit 201 uses the second preset power 50W as the total power allocated to the second charging output port 302. After the second round of residual power allocation, the residual power C2 obtained by the second charging output port 302=the total power allocated to the second charging output port 302-Pmin_c2=50W-30W=20W. The remaining residual power P after the second round of residual power allocation is 2_out =P 0_out -C1-C2=60W-10W-20W=30W, because P 2_out >0, so the third round of remaining power allocation continues.

[0149] In the third round of remaining power allocation, the power configuration unit 201 allocates (Pmin_c3 + remaining power P 2_out ) and the smaller value of the third preset power is the total power allocated to the third charging output port, because (Pmin_c3+remaining power P 2_out )=70W, the third preset power is 100W, so the power configuration unit 201 uses (Pmin_c3+remaining power P 2_out) That is, 70W is the total power allocated to the third charging output port 303. After the third round of remaining power allocation, the remaining power C3 obtained by the third charging output port 303 = the total power allocated to the third charging output port 303 - Pmin_c3 = 70W - 40W = 30W. The remaining remaining power P after the third round of remaining power allocation is 3_out =P 0_out -C1-C2-C3=60W-10W-20W-30W=0, because P 3_out =0, so the power configuration ends, which means that the total power allocated to the first charging output port 301 and the second charging output port 302 is their preset power, 30W and 50W respectively, and the total power allocated to the third charging output port 303 is (Pmin_c3 + remaining power P 2_out )That is 70W.

[0150] 2. When Y ≥ 3 and among the Y charging output ports, x charging output ports have the same priority and are the lowest priority, and Y>x ≥ 2 (in this case, the remaining Yx charging output ports have different priorities):

[0151] The charging output ports are defined in order from the first charging output port 301 to the Yth charging output port according to the priority from high to low, wherein the priorities of the Y-x+1th charging output port to the Yth charging output port are the same, so for these x charging output ports with the lowest priority, there is no restriction on their internal order. After sorting, the minimum output powers of these charging output ports are defined in order as Pmin_c1 to Pmin_cY, respectively, and the smaller values ​​of their maximum output powers and load requested powers are respectively the first preset power to the Yth preset power.

[0152] 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 powered device.

[0153] If (Pmin_c1+…+Pmin_cY)<Pmax_out<(first preset power+…+first preset power), the power configuration unit 201 first satisfies the minimum output power of the charging output ports (i.e., the power configuration unit first allocates the corresponding minimum output power to each charging output port connected to the powered device), and then allocates the remaining power in order of priority, and defines the initial amount of the remaining power as P 0_out , P 0_out =Pmax_out-(Pmin_c1+…+Pmin_cY), the allocation rule is:

[0154] When performing the first round of remaining power allocation, the power configuration unit 201 uses (Pmin_c1+remaining power P 0_out ) and the first preset power is the smaller value as the total power allocated to the first charging output port 301. After the first round of residual power allocation, the residual power obtained by the first charging output port 301 is defined as C1, C1=the total power allocated to the first charging output port 301-Pmin_c1. The residual power remaining after the first round of residual power allocation 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 yet allocated the remaining power, the power configuration unit 201 allocates the remaining power P 1_out Evenly distributed to these x charging output ports, the power distribution ends; if P 1_out > 0 and the number of charging output ports to which the remaining power has not been allocated is > x, the power configuration unit 201 continues to allocate the remaining power according to the following remaining power allocation rule until condition one or condition two is met:

[0155] The remaining power allocation rule is: in the kth round of remaining power allocation, the power configuration unit 201 is (Pmin_ck + remaining power P k-1_out ) and the kth preset power is the smaller value of the total power obtained by the kth charging output port. After the kth round of remaining power allocation is defined, the remaining power obtained by the kth charging output port is C k , C k = the total power obtained by the kth charging output port allocation - Pmin_ck, and the remaining power after the kth round of residual power allocation is defined as P k_out , P k_out =P 0_out -C1-…-C k ;

[0156] The first condition is: the remaining residual power P k_out is 0; the second condition is: the remaining residual power P k_out > 0 and the remaining power has not been allocated to the Y-x+1th to Y-th charging output ports; if the condition 1 is reached first, the power configuration ends; if the condition 2 is reached first, the remaining power P k_out The power distribution is evenly distributed to the Y-x+1th to Yth charging output ports, and the power distribution is completed, where k is a positive integer and 2≤k≤Yx.

[0157] 3. When Y ≥ 2 and among the Y charging output ports, x charging output ports have the same priority and the lowest priority, when Y = x, that is, when the Y charging output ports all have the same lowest priority, the power configuration unit first satisfies the minimum output power of these charging output ports, and then evenly distributes the remaining power.

[0158] To facilitate understanding of the above technical solution, specific values ​​are provided below for further explanation:

[0159] Assume that the portable energy storage device is provided with four charging output ports, which are defined as W port, A port, C1 port and C2 port respectively. The priority of these four charging output ports is set as: W port> A port> C1 port=C2 port (therefore, if Figure 6 As 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 the four charging output ports are connected to a powered device, the relevant power data is shown in Table 3 below:

[0160] Table 3

[0161] Related parameters W port Port A C1 port C2 port Minimum output power Pmin 20W 30W 50W 50W Maximum output power Pmax 40W 50W 70W 70W Load Request Power 30W 60W 80W 80W Preset power 30W 50W 70W 70W

[0162] ① If only the W port is connected to the powered device, the smaller value of its maximum output power and the load requested power is 30W, so the power allocated to the W port by the power configuration unit 201 is 30W; correspondingly, if only the C1 port is connected to the powered device, the smaller value of its maximum output power and the load requested power is 70W, so the power allocated to the C1 port by the power configuration unit 201 is 70W.

[0163] ② If only ports C1 and C2 are connected to powered devices, assuming Pmax_out = 110W, since Pmax_out < (C1 preset power + C2 preset power), the power configuration unit 201 first satisfies the minimum output power of ports C1 and C2. At this time, the remaining power = Pmax_out - (Pmin_C1 + Pmin_C2) = 10W. The power configuration unit 201 distributes the remaining power of 10W evenly to ports C1 and C2. Therefore, the total power finally obtained by ports C1 and C2 is 55W.

[0164] ③ If only W port, A port and C1 port are connected to the powered device, assuming Pmax_out = 140W, since (Pmin_W + Pmin_A + Pmin_C1) < Pmax_out < (W preset power + A preset power + C1 preset power), the power configuration unit 201 first satisfies the minimum output power of W port, A port and C1 port, and then allocates the remaining power in order of priority, and defines 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 allocation rule is:

[0165] When performing the first round of remaining power allocation, the power allocation unit 201 allocates (Pmin_W + remaining power P 0_out The smaller value of the preset power of ) and W is the total power obtained by the W port allocation, (Pmin_W + remaining power P 0_out ) is 60W, and the preset power of W is 30W. Since the preset power of W is smaller, the total power allocated to the W port by the power configuration unit 201 is 30W. After the first round of residual power allocation, the residual power C1 obtained by the W port = the total power obtained by the W port allocation - Pmin_W = 30W - 20W = 10W. The remaining residual power P after the first round of residual power allocation is 1_out =P 0_out -C1=40W-10W=30W.

[0166] Because P 1_out > 0, continue the second round of remaining power allocation. During the second round of remaining power allocation, the power configuration unit 201 uses (Pmin_A + remaining power P 1_out ) and the smaller value of the preset power of A is the total power allocated to port A, so (Pmin_A + remaining power P 1_out ) = 60W, the preset power of A is 50W, so the total power allocated to port A by the power configuration unit 201 is 50W. After the second round of remaining power allocation, the remaining power obtained by port A is C2, C2 = the total power obtained by the allocation of port A - Pmin_A = 50W - 30W = 20W. The remaining power after the second round of remaining power allocation is P 2_out , P 2_out =P 0_out -C1-C2=10W.

[0167] Because P 2_out > 0, continue the third round of remaining power allocation. During the third round of remaining power allocation, the power configuration unit 201 uses (Pmin_C1 + remaining power P 2_out ) and the smaller value of the preset power of C1 is the total power allocated to port C1, so (Pmin_C1 + remaining power P 2_out ) = 60W, the preset power of C1 is 70W, so the total power allocated to port C1 by the power configuration unit 201 is 60W. After the third round of remaining power allocation, the remaining power obtained by port C1 is C3, C3 = the total power allocated to port C1 - Pmin_C1 = 60W - 50W = 10W. The remaining power after the third round of remaining power allocation is P 3_out , P 3_out =P0_out -C1-C2=0, so the power sharing is finished.

[0168] ④ If only W port, C1 port, and C2 port are connected to the powered device, assuming Pmax_out = 130W, since (Pmin_W + Pmin_C1 + Pmin_C2) < Pmax_out < (W preset power + C1 preset power + C2 preset power), the power configuration unit 201 first satisfies the minimum output power of 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)=10W, the allocation rule is:

[0169] When performing the first round of remaining power allocation, the power allocation unit 201 allocates (Pmin_W + remaining power P 0_out The smaller value of the preset power of ) and W is the total power obtained by the W port allocation, (Pmin_W + remaining power P 0_out ) = 30W, the preset power of W is also 30W, so the total power allocated to port W by the power configuration unit 201 is 30W. After the first round of residual power allocation, the residual power obtained by port W is C1, C1 = the total power obtained by port W allocation - Pmin_W = 10W, and the remaining residual power P after the first round of residual power allocation is 1_out =P 0_out -C1=0, because P 1_out =0, so the power configuration is ended, which means that the total power allocated to port W is 30W, and the total power allocated to ports C1 and C2 is their minimum output power, which is 50W.

[0170] Assume that Pmax_out = 140W, because (Pmin_W + Pmin_C1 + Pmin_C2) < Pmax_out < (W preset power + C1 preset power + C2 preset power), the power configuration unit 201 first satisfies the minimum output power of W, 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, the allocation rule is:

[0171] When performing the first round of remaining power allocation, the power allocation unit 201 allocates (Pmin_W + remaining power P 0_out The smaller value of the preset power of ) and W is the total power obtained by the W port allocation, (Pmin_W + remaining power P 0_out) = 30W, the preset power of W is also 30W, so the total power allocated to port W by the power configuration unit 201 is 30W. After the first round of residual power allocation, the residual power obtained by port W is C1, C1 = the total power obtained by port W allocation - Pmin_W = 10W, and the remaining residual power P after the first round of residual power allocation is 1_out =P 0_out -C1=10W, because P 1_out >0 and at this time only the two charging output ports C1 and C2 have not yet allocated the remaining power, so the power configuration unit 201 allocates the remaining power P 1_out The power is evenly distributed to the second to third charging output ports 302 and 303, namely, C1 port and C2 port, 5W is allocated to each of C1 port and C2 port, and the power distribution ends, which means that the total power allocated to W port is 30W, and the total power allocated to C1 port and C2 port is 55W.

[0172] ⑤ If the W port, A port, C1 port, and C2 port are all connected to powered devices:

[0173] Assume that Pmax_out=250W, because Pmax_out>(W preset power+A preset power+C1 preset power+C2 preset power), the power allocated to port W, port A, port C1 and port C2 by the power configuration unit 201 are their preset powers respectively, that is, the power allocated to port W is 30W, the power allocated to port A is 50W, the power allocated to port C1 is 70W, and the power allocated to port C2 is 70W.

[0174] Assume that Pmax_out=150W, because Pmax_out=(Pmin_W+Pmin_A+Pmin_c1+Pmin_c2), the power allocated by the power configuration unit 201 to port W, port A, port C1 and port C2 are their minimum output powers, that is, the power allocated to port W is 20W, the power allocated to port A is 30W, the power allocated to port C1 is 50W, and the power allocated to port C2 is 50W.

[0175] Assume that Pmax_out=170W, because (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 power of W port, A port, C1 port and C2 port, and the remaining power P at this time is 0_out =Pmax_out-(Pmin_W+Pmin_A+Pmin_c1+Pmin_c2)=170W-150W=20W. The distribution rule of the remaining 20W power is:

[0176] The first round of remaining power allocation is performed, and the power configuration unit 201 allocates (Pmin_W + remaining power P 0_out ) and the smaller value of the preset power W is the total power allocated to the W port, so (Pmin_W + remaining power P 0_out ) = 40W, the preset power of W is 30W, so the total power allocated to port W by the power configuration unit 201 is 30W, the remaining power C1 obtained by port W = the total power obtained by port W - Pmin_W = 30W - 20W = 10W, and the remaining power P after the first round of remaining power allocation is 1_out =P 0_out -C1=20W-10W=10W, because P 1_out >0 and there are 3 charging output ports to 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 of remaining power allocation is performed.

[0177] In the second round of remaining power allocation, the power configuration unit 201 allocates (Pmin_A + remaining power P 1_out ) and the smaller value of the preset power of A is the total power allocated to port A, so (Pmin_A + remaining power P 1_out ) = 40W, the preset power of A is 50W, so the power configuration unit 201 uses (Pmin_A + remaining power P 1_out ) That is, 40W is the total power allocated to port A. After the second round of remaining power allocation, the remaining power obtained by port A is C2 = the total power allocated to port A - Pmin_A = 40W - 30W = 10W. The remaining remaining power P after the second round of remaining power allocation is 2_out =P 0_out -C1-C2=20W-10W-10W=0. Therefore, the remaining power P 2_out =0, the termination condition is reached, so the power allocation ends. This means that the total power allocated to port W is 30W, the total power allocated to port A is 40W, and the total power allocated to ports C1 and C2 is their minimum output power, which is 50W.

[0178] Assume that Pmax_out=200W, because (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 power of W port, A port, C1 port and C2 port, and the remaining power P at this time is 0_out =Pmax_out-(Pmin_W+Pmin_A+Pmin_c1+Pmin_c2)=200W-150W=50W. The distribution rule of the remaining 50W power is:

[0179] The first round of remaining power allocation is performed, and the power configuration unit 201 allocates (Pmin_W + remaining power P 0_out ) and the smaller value of the preset power W is the total power allocated to the W port, so (Pmin_W + remaining power P 0_out ) = 70W, the preset power of W is 30W, so the power configuration unit 201 uses 30W as the total power obtained by the W port allocation, and the remaining power C1 obtained by the W port = the total power obtained by the W port allocation - Pmin_w = 30W - 20W = 10W. The remaining power P after the first round of remaining power allocation is 1_out =P 0_out -C1=50W-10W=40W, because P 1_out >0 and there are 3 charging output ports to 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 of remaining power allocation is performed.

[0180] In the second round of remaining power allocation, the power configuration unit 201 allocates (Pmin_A + remaining power P 1_out ) and the smaller value of the preset power of A is the total power allocated to port A, so (Pmin_A + remaining power P 1_out ) = 70W, the preset power of A is 50W, so the power configuration unit 201 uses the preset power of A 50W as the total power obtained by the A port after allocation. After the second round of remaining power allocation, the remaining power C2 obtained by the A port = the total power obtained by the A port - Pmin_A = 50W - 30W = 20W. The remaining remaining power P after the second round of remaining power allocation is 2_out =P 0_out -C1-C2=50W-10W-20W=20W.

[0181] Because P 2_out > 0 and only the two lowest priority ports C1 and C2 have not yet been allocated the remaining power, so the aforementioned remaining power allocation rule is terminated and the remaining power P 2_out It is evenly distributed to port C1 and port C2, with port C1 and port C2 receiving 10W respectively. Therefore, with the minimum output power, the total power obtained by port C1 is 60W, and the total power obtained by port C2 is also 60W. At this time, the power configuration ends. The maximum output power of the portable energy storage device is 200W, port W obtains 30W, port A obtains 50W, and port C1 and port C2 obtain 60W respectively.

[0182] In particular, among the W port, A port, C1 port and 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. In this scenario, the portable energy storage device provided in this embodiment can have 2 power input ports and 4 charging output ports, wherein the 2 power input ports are the C1 port and the C2 port, and the 4 charging output ports are the W port, the A port, the C1 port and the C2 port.

[0183] The portable energy storage device provided in this embodiment can ensure that when there are powered devices on multiple charging output ports and the sum of the powers of the powered devices is greater than the maximum power that the device can provide, it can ensure that all ports can work according to the set minimum power. Further, when multiple charging output ports are connected to powered devices and power configuration is performed according to the above rules, if during operation, the powered device of a charging output port is removed, so that the charging output port connected to the powered device changes, then according to the above rules, the power is redistributed according to the number of charging output ports currently connected to the powered device, so that the power released by a port due to the removal of the powered device can be allocated to the port of the powered device that has not been removed, so that the portable energy storage device can output the maximum power it can provide as much as possible, and achieve the effect of dynamic adjustment. In addition, in the portable energy storage device provided in this embodiment, all or part of the charging output ports have different priorities and the priorities are set in advance, so when the user uses the device, the priority order of multiple powered devices can be determined according to the actual situation.

[0184] Example 4

[0185] This embodiment provides a charging and discharging power allocation method for a portable energy storage device, which is applied to the portable energy storage device capable of multi-port simultaneous charging and discharging as described in any one of Embodiments 1 to 3, wherein the portable energy storage device includes a power configuration unit, at least two power input ports, and at least two charging output ports, wherein the power configuration unit is used to configure power for the power input port connected to the charging device and the charging output port connected to the powered device, and defines a state when the power input port is connected to the charging device and the charging output port is also connected to the powered device as a charging and discharging state;

[0186] The charging and discharging power distribution method comprises:

[0187] The maximum allowable operating power of the portable energy storage device in the state of charging and discharging is defined as Pmax. The power configuration unit configures 1 / 2 of Pmax as the maximum allowable input power of the power input port, and configures the sum of the actual charging power of the power input port as the maximum total output power of the charging output port. The maximum allowable input power of the power input port is defined as Pmax_in, and the maximum total output power of the charging output port is defined as Pmax_out. Then Pmax_in=Pmax / 2, Pmax_out=the sum of the actual charging power of the power input port, and Pmax_out≤Pmax_in;

[0188] When the sum of the maximum allowable charging powers of the power input ports connected to the charging device is ≤Pmax_in, the power configuration unit configures all of the power input ports to operate at their maximum allowable charging powers, where the maximum allowable charging power is the smaller value of the preset maximum charging power of the power input port and the charging power that the charging device can provide after the charging device is plugged into the port; when the sum of the maximum allowable charging powers of the power input ports connected to the charging device is >Pmax_in, the power configuration unit configures the power input ports to use Pmax_in as the sum of the operating powers;

[0189] When the sum of the preset powers of the charging output ports connected to the powered device is ≤Pmax_out, the power configuration unit allocates the corresponding preset power to each charging output port connected to the powered device, and the preset power is the smaller value of the maximum output power of the charging output port and the load requested power; when the sum of the preset powers of the charging output ports connected to the powered device is >Pmax_out, the sum of the powers allocated to the charging output ports by the power configuration unit is Pmax_out.

[0190] It should be noted that, in the present invention, the power allocated to a power input port is its operating power. For example, when it is mentioned that a power input port has an operating power of 50W, it means that the power configured by the power configuration unit to the power input port is 50W; and the total power allocated to a charging output port is usually also the operating power of the port, but there are two special cases: one is that after the remaining power is evenly distributed to several charging output ports with the lowest priority, if the total power allocated to a port is (remaining power + minimum output power) ≥ the preset power of the port, then the port will eventually use the preset power as the operating power; the second is that the total power obtained by a port is the minimum output power of the port. If the minimum output power is greater than the load request power of the port, then the port will eventually use the load request power as the operating power.

[0191] The above describes the specific embodiments of the present invention. Based on the above description, relevant personnel can make various changes and modifications without departing from the technical concept of the present invention.

Claims

1. A portable energy storage device capable of multiple ports being charged and discharged simultaneously, characterized in that: It includes a power configuration unit, at least two power input ports, and at least two charging output ports, wherein the power configuration unit is used to configure power for the power input port connected to the charging device and the charging output port connected to the powered device, and defines a state when the power input port is connected to the charging device and the charging output port is also connected to the powered device as a charging and discharging state; The maximum allowable operating power of the portable energy storage device in the state of charging and discharging is defined as Pmax. The power configuration unit configures 1 / 2 of Pmax as the maximum allowable input power of the power input port, and configures the sum of the actual charging power of the power input port as the maximum total output power of the charging output port. The maximum allowable input power of the power input port is defined as Pmax_in, and the maximum total output power of the charging output port is defined as Pmax_out. Then Pmax_in=Pmax / 2, Pmax_out=the sum of the actual charging power of the power input port, and Pmax_out≤Pmax_in; When the sum of the maximum allowable charging powers of the power input ports connected to the charging device is ≤Pmax_in, the power configuration unit configures all of the power input ports to operate at their maximum allowable charging powers, where the maximum allowable charging power is the smaller value of the preset maximum charging power of the power input port and the charging power that the charging device can provide after the charging device is plugged into the port; when the sum of the maximum allowable charging powers of the power input ports connected to the charging device is >Pmax_in, the power configuration unit configures the power input ports to use Pmax_in as the sum of the operating powers; When the sum of the preset powers of the charging output ports connected to the powered device is ≤Pmax_out, the power configuration unit allocates the corresponding preset power to each charging output port connected to the powered device, and the preset power is the smaller value of the maximum output power of the charging output port and the load requested power; when the sum of the preset powers of the charging output ports connected to the powered device is >Pmax_out, the sum of the powers allocated to the charging output ports by the power configuration unit is Pmax_out.

2. The portable energy storage device capable of multiple ports being charged and discharged simultaneously according to claim 1, characterized in that: When the sum of the maximum allowed charging powers of the power input ports connected to the charging device is greater than Pmax_in, the power configuration unit configures the power input ports to use Pmax_in as the sum of the operating powers and performs power configuration according to the following rules: If the number of power input ports connected to the charging device is 1, the power configuration unit configures the power input port to use Pmax_in as the operating power; If the number of power input ports connected to the charging device is N, where N is a positive integer and ≥ 2, then: When the maximum allowable charging power of each power input port is greater than Pmax_in / N, the power configuration unit configures these power input ports to operate at Pmax_in / N; When the maximum allowable charging power of some power input ports is ≤ Pmax_in / N, the power configuration unit performs the first power configuration for these power input ports, so that these power input ports operate at the maximum allowable charging power. Assuming that the total power occupied by these power input ports is B1, the remaining power that can be configured by the power configuration unit is P1=Pmax_in-B1, and the number of power input ports with remaining unallocated power is M1=N-the number of power input ports configured to operate at the maximum allowable charging power for the first time. Then, for the remaining M1 power input ports: If the maximum allowable charging power is greater than P1 / M1, the power configuration unit makes the remaining M1 power input ports all operate at P1 / M1; If the maximum allowable charging power of some power input ports is still ≤ P1 / M1, the power configuration unit configures the power according to the following rules. In the following rules, after the power configuration unit performs the kth power configuration, the total power occupied by the power input ports that are configured to operate at the maximum allowable charging power for the kth time is B k , the remaining power that can be configured by the power configuration unit is P k , the number of power input ports with remaining unallocated power is M k , k is a positive integer and k ≥ 1: The remaining M k For the maximum allowable charging power ≤ P k / M k The power input ports of the power configuration unit perform the k+1th power configuration to make these power input ports operate at the maximum allowed charging power. Assuming that the power occupied by these power input ports is B k+1 , the remaining power that can be configured by the power configuration unit is P k+1 =Pmax_in-B1-…-B k+1 , the number of power input ports with remaining unallocated power M k+1 =M k −The number of power input ports that are configured to operate at the maximum allowed charging power for the k+1th time; in this rule, after the k+1th power configuration, the remaining M k+1 The maximum allowable charging power of each power input port is greater than P k+1 / M k+1 , that is, terminate the rule, and the power configuration unit makes the remaining M k+1 Each power input port is P k+1 / M k+1 For operating power.

3. The portable energy storage device capable of multiple ports being charged and discharged simultaneously according to claim 1, characterized in that: When the sum of the preset powers of the charging output ports connected to the powered device is greater than Pmax_out, the sum of the powers allocated by the power configuration unit to the charging output ports is Pmax_out, and the power allocation is performed according to the following rules: The charging output ports are pre-configured with a priority order for power allocation, and each charging output port is pre-configured with a minimum output power and a maximum output power, 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 is ≤ the maximum output power of the port, and the maximum output power of each charging output port is ≤ Pmax_out; If the sum of the minimum output powers of the charging output ports connected to the powered device = Pmax_out, the power configuration unit allocates the corresponding minimum output power to each charging output port connected to the powered device; If the sum of the minimum output powers of the charging output ports connected to the powered device is less than Pmax_out and less than the sum of the preset powers of the charging output ports, the power configuration unit allocates the remaining power according to the priority order of the charging output ports after the minimum output powers of the charging output ports are met, and the remaining power = Pmax_out - the sum of the minimum output powers of the charging output ports.

4. The portable energy storage device capable of multiple ports being charged and discharged simultaneously according to claim 3, characterized in that: When the sum of the minimum output powers of the charging output ports connected to the powered device is less than Pmax_out and less than the sum of the preset powers of the charging output ports, the power configuration unit allocates the remaining power according to the priority order of the charging output ports after the minimum output powers of the charging output ports are met according to the following rules: The number of charging output ports connected to the powered device is defined as Y. When Y ≥ 2 and the Y charging output ports have different priorities, the charging output ports are sorted from high to low in order of priority, and the charging output ports are defined as the first charging output port to the Yth charging output port in sequence, and their minimum output powers are defined as Pmin_c1 to Pmin_cY, respectively, and the smaller values ​​of their maximum output powers and the load requested powers are defined as the first preset power to the Yth preset power, respectively; Define the initial amount of residual power as P 0_out , P 0_out =Pmax_out-(Pmin_c1+…+Pmin_cY), when performing the first round of remaining power allocation, the power allocation unit uses (Pmin_c1+remaining power P 0_out ) and the first preset power is the smaller value as the total power obtained by the first charging output port. After the first round of residual power allocation, the residual power obtained by the first charging output port is defined as C1, C1=the total power obtained by the first charging output port allocation-Pmin_c1, and the residual power remaining after the first round of residual power allocation 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 to distribute the remaining power according to the following rules until the remaining remaining power P k_out = 0, thus ending the power allocation: In the kth round of remaining power allocation, the power allocation unit uses (Pmin_ck + remaining power P k-1_out ) and the kth preset power is the smaller value of the total power obtained by the kth charging output port. After the kth round of remaining power allocation is defined, the remaining power obtained by the kth charging output port is C k , C k = the total power obtained by the kth charging output port allocation - Pmin_ck, and the remaining power after the kth round of remaining power allocation is defined as P k_out , P k_out =P 0_out -C1-…-C k , where k is a positive integer and k ≥ 2.

5. The portable energy storage device capable of multiple ports being charged and discharged simultaneously according to claim 3, characterized in that: When the sum of the minimum output powers of the charging output ports connected to the powered device is less than Pmax_out and less than the sum of the preset powers of the charging output ports, the power configuration unit allocates the remaining power according to the priority order of the charging output ports after the minimum output powers of the charging output ports are met according to the following rules: Define the number of charging output ports connected to the powered device as Y. Among the Y charging output ports, the number of charging output ports with the same lowest priority is x, and the remaining Yx charging output ports have different priorities. Then: When Y≥2 and Y=x, that is, the Y charging output ports all have the same lowest priority, the power configuration unit first satisfies the minimum output power of the charging output ports, and then evenly distributes the remaining power; When Y≥3, and 2≤x<Y, the charging output ports are defined as the first charging output port to the Yth charging output port in descending order according to the priority, wherein the priorities of the Y-x+1th charging output port to the Yth charging output port are the same, and the minimum output powers of these charging output ports are defined as Pmin_c1 to Pmin_cY in order, and the smaller values ​​of their maximum output powers and the load request powers are defined as the first preset power to the Yth preset power; the initial amount of the remaining power is defined as P 0_out , P 0_out =Pmax_out-(Pmin_c1+…+Pmin_cY), the remaining power allocation rule is: When performing the first round of remaining power allocation, the power allocation unit uses (Pmin_c1 + remaining power P 0_out ) and the first preset power is the smaller value as the total power obtained by the first charging output port. After the first round of residual power allocation, the residual power obtained by the first charging output port is defined as C1, C1=the total power obtained by the first charging output port allocation-Pmin_c1, and the residual power remaining after the first round of residual power allocation 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 yet allocated the remaining power, the power configuration unit will allocate the remaining power P 1_out Evenly distributed to these x charging output ports, the power distribution ends; if P 1_out > 0 and there are > x charging output ports to which the remaining power has not been allocated, the power configuration unit continues to allocate the remaining power according to the following remaining power allocation rule until condition 1 or condition 2 is met: The remaining power allocation rule is: in the kth round of remaining power allocation, the power allocation unit is (Pmin_ck + remaining power P k-1_out ) and the kth preset power is the smaller value of the total power obtained by the kth charging output port. After the kth round of remaining power allocation is defined, the remaining power obtained by the kth charging output port is C k , C k = the total power obtained by the kth charging output port allocation - Pmin_ck, and the remaining power after the kth round of remaining power allocation is defined as P k_out , P k_out =P 0_out -C1-…-C k ; The first condition is: the remaining residual power P k_out is 0; the second condition is: the remaining residual power P k_out > 0 and at this time only x charging output ports have not yet allocated the remaining power; if the condition 1 is reached first, the power allocation ends; if the condition 2 is reached first, the remaining power P k_out The power is evenly distributed to the remaining x charging output ports, and the power allocation is completed, where k is a positive integer and k≥2.

6. The portable energy storage device capable of multiple ports being charged and discharged simultaneously according to claim 1, characterized in that: The number of the power input ports is 2, and the number of the charging output ports is 4. The 2 power input ports are bidirectional ports capable of both charging and discharging, and 2 of the charging output ports are bidirectional ports.

7. The portable energy storage device capable of multi-port simultaneous charging and discharging according to claim 1, characterized in that: 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, a power input port and a charging output port are arranged on the circuit boards, and a power configuration unit is arranged on the main control board.

8. The portable energy storage device capable of multiple ports being charged and discharged simultaneously according to claim 7, characterized in that: The power configuration unit calculates the real-time power requirements of each power input port and charging output port by reading preset parameters of the power input port and the charging output port, and configures the charging power and discharging power of each power input port and the charging output port accordingly, wherein the preset parameters include current and voltage.

9. The portable energy storage device capable of multi-port simultaneous charging and discharging according to claim 7, characterized in that: The charging and discharging interface circuit board and the main control board are both provided with protection circuits, which include 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.

10. A charging and discharging power distribution method for a portable energy storage device, applied to a portable energy storage device capable of simultaneously charging and discharging multiple ports, characterized in that: The portable energy storage device comprises a power configuration unit, at least two power input ports, and at least two charging output ports, wherein the power configuration unit is used to configure power for the power input port connected to the charging device and the charging output port connected to the powered device, and defines a state when the power input port is connected to the charging device and the charging output port is also connected to the powered device as a charging and discharging state; The charging and discharging power distribution method comprises: The maximum allowable operating power of the portable energy storage device in the state of charging and discharging is defined as Pmax. The power configuration unit configures 1 / 2 of Pmax as the maximum allowable input power of the power input port, and configures the sum of the actual charging power of the power input port as the maximum total output power of the charging output port. The maximum allowable input power of the power input port is defined as Pmax_in, and the maximum total output power of the charging output port is defined as Pmax_out. Then Pmax_in=Pmax / 2, Pmax_out=the sum of the actual charging power of the power input port, and Pmax_out≤Pmax_in; When the sum of the maximum allowable charging powers of the power input ports connected to the charging device is ≤Pmax_in, the power configuration unit configures all of the power input ports to operate at their maximum allowable charging powers, where the maximum allowable charging power is the smaller value of the preset maximum charging power of the power input port and the charging power that the charging device can provide after the charging device is plugged into the port; when the sum of the maximum allowable charging powers of the power input ports connected to the charging device is >Pmax_in, the power configuration unit configures the power input ports to use Pmax_in as the sum of the operating powers; When the sum of the preset powers of the charging output ports connected to the powered device is ≤Pmax_out, the power configuration unit allocates the corresponding preset power to each charging output port connected to the powered device, and the preset power is the smaller value of the maximum output power of the charging output port and the load requested power; when the sum of the preset powers of the charging output ports connected to the powered device is >Pmax_out, the sum of the powers allocated to the charging output ports by the power configuration unit is Pmax_out.

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