A charging method, device, charging equipment, and charging system

Abstract

Embodiments of the present invention relate to the field of charging technology, and in particular, to a charging method, device, charging equipment, and charging system. The charging method is used to charge a battery, and the method includes: obtaining the number of charging cycles and the charging temperature of the battery; determining target charging parameters according to the number of charging cycles and the charging temperature; and charging the battery according to the target charging parameters. In the above manner, the embodiment of the present invention can determine the target charging parameters for charging the battery in real time according to the different aging degrees and temperature states of the battery, thereby improving the safety of charging.

Description

Technical Field

[0001] The embodiments of the present invention relate to the field of charging technology, and in particular to a charging method, a charging device, a charging equipment, and a charging system. Background Art

[0002] Lithium battery is a battery that uses lithium metal or lithium alloy as positive and negative electrode materials and non-aqueous electrolyte solution. It has sensitive temperature characteristics. If the lithium battery is charged with the same charging current under different temperature conditions, it is easy to cause the lithium battery to catch fire or explode, posing a safety hazard. Summary of the invention

[0003] The embodiments of the present invention aim to provide a charging method, a device, a charging equipment, and a charging system, which can determine the target charging parameters for charging a battery in real time according to the different aging degrees and temperature states of the battery, thereby improving the safety of charging.

[0004] In order to solve the above technical problems, a technical solution adopted in an embodiment of the present invention is: providing a charging method for charging a battery, the method comprising:

[0005] Obtaining the number of charging cycles and charging temperature of the battery;

[0006] determining a target charging parameter according to the number of charging cycles and the charging temperature;

[0007] The battery is charged according to the target charging parameter.

[0008] Optionally, determining a target charging parameter according to the number of charging cycles and the charging temperature includes:

[0009] Selecting either the number of charging cycles or the charging temperature as a first index value and the other as a second index value, each index value being used to select a corresponding preset index interval;

[0010] Determine, in a first preset index interval corresponding to the first index value, a second preset index interval corresponding to the second index value;

[0011] The preset charging parameter corresponding to the second preset index interval is determined as the target charging parameter.

[0012] Optionally, the type of the second preset index interval includes a unidirectional current adjustment type interval and a current and voltage adjustment type interval;

[0013] If the type of the second preset index interval is a unidirectional current adjustment interval, the preset charging parameter corresponding to the second preset index interval includes a current parameter;

[0014] If the type of the second preset index interval is a current and voltage adjustment interval, the preset charging parameters corresponding to the second preset index interval include a current parameter and a voltage parameter.

[0015] Optionally, the current parameter is a preset charging rate;

[0016] The voltage parameter is a preset voltage multiple, wherein the preset voltage multiple is less than 1.

[0017] Optionally, when the determined target charging parameter is a preset charging rate, charging the battery according to the target charging parameter includes:

[0018] Determining the actual charging current according to the preset charging rate;

[0019] The battery is charged with the actual charging current and the highest charging voltage of the battery.

[0020] Optionally, the actual charging current is the product of the battery capacity of the battery and a preset charging rate.

[0021] Optionally, when the determined target charging parameters are a preset charging rate and a preset voltage multiple, charging the battery according to the target charging parameters includes:

[0022] Determining the actual charging current according to the preset charging rate;

[0023] Determining the actual charging voltage according to the preset voltage multiple;

[0024] The battery is charged with the actual charging current and the actual charging voltage.

[0025] Optionally, the actual charging voltage is the product of the maximum charging voltage of the battery and a preset voltage multiple.

[0026] Optionally, before determining the target charging parameter according to the number of charging cycles and the charging temperature, the method further includes:

[0027] Determining whether the number of charging cycles and / or the charging temperature meet a preset charging condition;

[0028] If yes, determining a target charging parameter according to the number of charging cycles and the charging temperature;

[0029] If not, stop charging.

[0030] Optionally, the determining whether the number of charging cycles and / or the charging temperature meets a preset charging condition includes:

[0031] It is determined whether the number of charging cycles is greater than a preset number threshold, and / or whether the charging temperature is within a preset normal temperature range.

[0032] Optionally, obtaining the number of charging cycles and the charging temperature of the battery includes:

[0033] establishing a communication port with the battery;

[0034] Based on the communication port, the number of charging cycles and the charging temperature of the battery are obtained.

[0035] In order to solve the above technical problems, another technical solution adopted by the embodiment of the present invention is: providing a charging device for charging a battery, the device comprising:

[0036] An acquisition module, the acquisition module is used to acquire the number of charging cycles and charging temperature of the battery;

[0037] A determination module, the determination module is used to determine a target charging parameter according to the number of charging cycles and the charging temperature;

[0038] A charging module is used to charge the battery according to the target charging parameter.

[0039] Optionally, the determining module is specifically used to:

[0040] Selecting either the number of charging cycles or the charging temperature as a first index value and the other as a second index value, each index value being used to select a corresponding preset index interval;

[0041] Determine, in a first preset index interval corresponding to the first index value, a second preset index interval corresponding to the second index value;

[0042] The preset charging parameter corresponding to the second preset index interval is determined as the target charging parameter.

[0043] Optionally, the type of the second preset index interval includes a unidirectional current adjustment type interval and a current and voltage adjustment type interval;

[0044] If the type of the second preset index interval is a unidirectional current adjustment interval, the preset charging parameter corresponding to the second preset index interval includes a current parameter;

[0045] If the type of the second preset index interval is a current and voltage adjustment interval, the preset charging parameters corresponding to the second preset index interval include a current parameter and a voltage parameter.

[0046] Optionally, the current parameter is a preset charging rate;

[0047] The voltage parameter is a preset voltage multiple, wherein the preset voltage multiple is less than 1.

[0048] Optionally, when the determined target charging parameter is a preset charging rate, the charging module is specifically configured to:

[0049] Determining the actual charging current according to the preset charging rate;

[0050] The battery is charged with the actual charging current and the highest charging voltage of the battery.

[0051] Optionally, the actual charging current is the product of the battery capacity of the battery and a preset charging rate.

[0052] Optionally, when the determined target charging parameters are a preset charging rate and a preset voltage multiple, the charging module is specifically configured to:

[0053] Determining the actual charging current according to the preset charging rate;

[0054] Determining the actual charging voltage according to the preset voltage multiple;

[0055] The battery is charged with the actual charging current and the actual charging voltage.

[0056] Optionally, the actual charging voltage is the product of the maximum charging voltage of the battery and a preset voltage multiple.

[0057] Optionally, the device further comprises:

[0058] A judgment module, the judgment module is used to judge whether the number of charging cycles and / or the charging temperature meet a preset charging condition;

[0059] If yes, determining a target charging parameter according to the number of charging cycles and the charging temperature;

[0060] If not, stop charging.

[0061] Optionally, the judging module is specifically used for:

[0062] It is determined whether the number of charging cycles is greater than a preset number threshold, and / or whether the charging temperature is within a preset normal temperature range.

[0063] Optionally, the acquisition module is specifically used for:

[0064] establishing a communication port with the battery;

[0065] Based on the communication port, the number of charging cycles and the charging temperature of the battery are obtained.

[0066] In order to solve the above technical problems, another technical solution adopted by the embodiment of the present invention is: to provide a charging device, including:

[0067] at least one processor; and

[0068] A memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can be used to execute the charging method described above.

[0069] In order to solve the above technical problems, another technical solution adopted by the embodiment of the present invention is: to provide a charging system, comprising:

[0070] Batteries; and

[0071] The charging device described above;

[0072] The charging device communicates with the battery via a communication port.

[0073] To solve the above technical problems, another technical solution adopted by an embodiment of the present invention is: providing a non-volatile computer-readable storage medium, wherein the non-volatile computer-readable storage medium stores computer-executable instructions, and the computer-executable instructions are used to enable a charging device to execute the charging method described above.

[0074] The beneficial effect of the embodiments of the present invention is as follows: Different from the prior art, the embodiments of the present invention provide a charging method, a device, a charging equipment, and a charging system. In the charging method, the number of charging cycles and the charging temperature of the battery are obtained, and the target charging parameters for charging the battery are determined based on the obtained number of charging cycles and the charging temperature. The determined target charging parameters can be adapted to the aging degree and temperature state of the battery, and are more accurate, thereby improving the safety of charging. BRIEF DESCRIPTION OF THE DRAWINGS

[0075] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0076] Figure 1 is a structural schematic diagram of a charging system provided by an embodiment of the present invention;

[0077] Figure 2 is a structural schematic diagram of a charging system provided by another embodiment of the present invention;

[0078] Figure 3is a structural schematic diagram of a charging system provided by another embodiment of the present invention;

[0079] Figure 4a is a structural schematic diagram of a charging system provided by another embodiment of the present invention;

[0080] Figure 4b yes Figure 4a The schematic diagram of the structure of the amplifier circuit, the filter circuit and the voltage follower in the charging system shown;

[0081] Figure 5 is a structural schematic diagram of a charging system provided by another embodiment of the present invention;

[0082] Figure 6 is a structural schematic diagram of a charging system provided by another embodiment of the present invention;

[0083] Figure 7 is a flow chart of a charging method provided by an embodiment of the present invention;

[0084] Figure 8 is a schematic flow chart of a charging method provided by another embodiment of the present invention;

[0085] Fig. 9 is a schematic structural diagram of a charging device provided by an embodiment of the present invention;

[0086] Fig.10 is a structural schematic diagram of a charging device provided by another embodiment of the present invention;

[0087] Fig.11 It is a schematic diagram of the hardware structure of a charging device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0088] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0089] It should be noted that when an element is described as being "fixed to" another element, it may be directly on the other element, or one or more elements may be located therebetween. When an element is described as being "connected to" another element, it may be directly connected to the other element, or one or more elements may be located therebetween. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this specification are for illustrative purposes only.

[0090] In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0091] The present invention provides a charging method and device. The method and device are applied to a charging device, so that when the charging device is charging a battery, it can determine the target charging parameters for charging the battery in real time according to the charging temperature and the number of charging cycles of the battery, so that the determined target charging parameters are adapted to the aging degree and temperature state of the battery, thereby improving the safety of charging.

[0092] The charging device in the present invention can be an independent device, such as a charger, etc.; or it can be a circuit module that can be integrated into a device. When the charging device is electrically connected to the battery, the charging device can charge the battery. The present invention will be described below through specific embodiments.

[0093] Embodiment 1

[0094] See also Figure 1 , is a charging system provided by one embodiment of the present invention, including a battery 10 and a charging device 20, the charging device 20 is electrically connected to the battery 10 to charge the battery 10, and the charging device 20 and the battery 10 communicate through a communication port.

[0095] Specifically, the battery 10 includes a first power port 11, a first main circuit switch 12, a lithium battery pack 13 and a first control circuit 14, one end of the first main circuit switch 12 is electrically connected to the first power port 11, the other end of the first main circuit switch 12 is electrically connected to the lithium battery pack 13, the control end of the first main circuit switch 12 is electrically connected to the first control circuit 14, and the first control circuit 14 is electrically connected to the lithium battery pack 13.

[0096] The first power port 11 is preferably a USB port, and the first power port 11 is used to be electrically connected to the charging device 20 so that the charging device 20 inputs charging current and charging voltage to the battery 10 through the first power port 11 to achieve charging.

[0097] The lithium battery pack 13 is composed of rechargeable lithium-ion batteries, which include but are not limited to lithium polymer batteries, ternary polymer lithium batteries, etc.

[0098] When the charging device 20 charges the battery 10 through the first power port 11 , the charging device 20 charges the lithium battery pack 13 to store electricity in the lithium battery pack 13 .

[0099] The electricity in the lithium battery pack 13 is used to supply power to the first power port 11 , the first main circuit switch 12 and the first control circuit 14 to ensure that the battery 10 can work normally.

[0100] The first main circuit switch 12 may be an N-type metal oxide semiconductor (NMOS), or a P-type metal oxide semiconductor (PMOS), or an insulated gate bipolar transistor (IGBT), or a transistor.

[0101] The on / off state of the first main circuit switch 12 can control the connection / disconnection state of the first power port 11 and the lithium battery pack 13. When the first main circuit switch 12 is closed, the first power port 11 is connected to the lithium battery pack 13. At this time, if the first power port 11 is electrically connected to the charging device 20, the charging device 20 can input the charging current and charging voltage to the lithium battery pack 13; when the first main circuit switch 12 is opened, the first power port 11 is disconnected from the lithium battery pack 13. At this time, if the first power port 11 is electrically connected to the charging device 20, the charging device 20 cannot input the charging current and charging voltage to the lithium battery pack 13.

[0102] The on / off state of the first main circuit switch 12 is controlled by the first control circuit 14 .

[0103] The first control circuit 14 is also used to obtain the charging temperature and charging cycle number of the battery. In the embodiment of the present invention, the charging temperature and charging cycle number obtained by the first control circuit 14 are actually the charging temperature and charging cycle number of the lithium battery pack 13. Among them, the charging temperature is the surface temperature of the lithium battery pack 13, and the charging temperature can be the average value of the surface temperature of each lithium battery, or the maximum value of the surface temperature; the charging cycle number is the total number of all and partial discharge cycles of the lithium battery pack 13, and the charging cycle number represents the aging degree of the lithium battery pack 13. The greater the number of charging cycles, the greater the aging degree of the lithium battery pack 13, and the smaller the charging current and charging voltage allowed when the lithium battery pack 13 is charged.

[0104] The first control circuit 14 includes electronic components such as a controller that can coordinate and direct the work of the system.

[0105] Furthermore, the charging device 20 includes a second power port 21, a second main circuit switch 22, a power supply component 23 and a second control circuit 24, one end of the second main circuit switch 22 is electrically connected to the second power port 21, the other end of the second main circuit switch 22 is electrically connected to the power supply component 23, the control end of the second main circuit switch 22 is electrically connected to the second control circuit 24, and the second control circuit 24 is electrically connected to the power supply component 23.

[0106] The power supply assembly 23 is the power supply of the charging device 20, and the charging device 20 supplies power to the battery 10 through the power supply assembly 23. At the same time, the power supply assembly 23 is also used to supply power to the second power port 21, the second main circuit switch 22 and the second control circuit 24 to ensure that the charging device 20 can work normally.

[0107] See also Figure 2 The power supply component 23 includes an AC power supply 231, a rectifier circuit 232 and a DC-DC circuit 233. The input end of the rectifier circuit 232 is electrically connected to the AC power supply 231, the output end of the rectifier circuit 232 is electrically connected to the input end of the DC-DC circuit 233, the output end of the DC-DC circuit 233 is electrically connected to the second main circuit switch 22, and the control end of the DC-DC circuit 233 is electrically connected to the second control circuit 24.

[0108] Among them, the AC power supply 231 is used to provide an AC charging current and an AC charging voltage; the rectifier circuit 232 is used to convert AC power into DC power, including converting the AC charging current into a DC charging current and converting the AC charging voltage into a DC charging voltage; the DC-DC circuit 233 is used to adjust the converted charging current and / or charging voltage, and output the charging current and charging voltage. For example: when the DC-DC circuit 233 only adjusts the converted charging current, the DC-DC circuit 233 still outputs the charging current and charging voltage. At this time, the charging current output by the DC-DC circuit 233 is the adjusted charging current, and the output charging voltage is the unadjusted charging voltage; when the DC-DC circuit 233 adjusts the converted charging current and charging voltage, the DC-DC circuit 233 outputs the charging current and charging voltage, and the charging current output by the DC-DC circuit 233 is the adjusted charging current, and the output charging voltage is the adjusted charging voltage.

[0109] The power supply component 23 adjusts the charging current and / or charging voltage through the DC-DC circuit 233 before supplying power to the second power port 21 , the second main circuit switch 22 and the second control circuit 24 to ensure that the charging device 20 can work normally.

[0110] Preferably, the DC-DC circuit 233 is a step-up / step-down circuit, which can increase the charging current and / or the charging voltage, and can also decrease the charging current and / or the charging voltage.

[0111] Of course, in some alternative embodiments, the DC-DC circuit 233 may be a boost circuit that can only increase the charging current and / or the charging voltage; or, the DC-DC circuit 233 may be a buck circuit that can only decrease the charging current and / or the charging voltage.

[0112] Of course, see Figure 3In some other alternative embodiments, when the AC power supply 231 is replaced by a DC power supply, the power supply assembly 23 can remove the rectifier circuit 232. At this time, the input end of the DC-DC circuit 233 is electrically connected to the DC power supply 231, the output end of the DC-DC circuit 233 is electrically connected to the second main circuit switch 22, and the control end of the DC-DC circuit 233 is electrically connected to the second control circuit 24. The DC power supply 231 is used to provide a DC charging current and a DC charging voltage; the DC-DC circuit 233 is used to adjust the charging current and / or charging voltage.

[0113] The second power port 21 is preferably a USB port, and the charging device 20 is electrically connected to the first power port 11 of the battery 10 through the second power port 21 to input charging current and charging voltage to the battery 10 to charge the battery 10 .

[0114] The second main loop switch 22 may be an N-type metal oxide semiconductor (NMOS), or a P-type metal oxide semiconductor (PMOS), or an insulated gate bipolar transistor (IGBT), or a transistor, etc.

[0115] The on / off state of the second main circuit switch 22 can control the connection / disconnection state of the second power port 21 and the DC-DC circuit 233. When the second main circuit switch 22 is closed, the second power port 21 is connected to the DC-DC circuit 233. At this time, if the second power port 21 is electrically connected to the first power port 11, the charging current and charging voltage output by the DC-DC circuit 233 can be input to the first power port 11 through the second power port 21; when the second main circuit switch 22 is opened, the second power port 21 is disconnected from the DC-DC circuit 233. At this time, if the second power port 21 is electrically connected to the first power port 11, the charging current and charging voltage output by the DC-DC circuit 233 cannot be input to the first power port 11 through the second power port 21.

[0116] The on / off state of the second main circuit switch 22 is controlled by the second control circuit 24 , and the DC-DC circuit 233 adjusts the charging current and / or charging voltage also through the second control circuit 24 .

[0117] The second control circuit 24 includes electronic components such as a controller that can coordinate and direct the work of the system.

[0118] After the first power port 11 is electrically connected to the second power port 21, the second control circuit 24 establishes a communication port with the battery 10. Specifically, the second control circuit 24 establishes a communication port with the first control circuit 14 to communicate with the first control circuit 14 through the communication port, that is, the communication between the charging device 20 and the battery 10 is performed through the second control circuit 24 and the first control circuit 14. At this time, the second control circuit 24 executes the charging method described in the present invention so that the charging device 20 can determine the target charging parameters for charging the battery 10 in real time. Among them, the second control circuit 24 controls the closing / opening of the second main circuit switch 22, controls the DC-DC circuit 233 to adjust the charging current and / or charging voltage, and controls the first control circuit 14 to control the closing / opening of the first main circuit switch 12 according to the charging method executed.

[0119] Specifically, the second control circuit 24 obtains the charging temperature and the number of charging cycles of the battery based on the communication port.

[0120] Since the first control circuit 14 in the battery 10 has obtained the charging temperature and the number of charging cycles of the lithium battery pack 13, the second control circuit 24 can directly obtain the charging temperature and the number of charging cycles of the battery from the first control circuit 14 through the communication port after being connected to the first control circuit 14 for communication.

[0121] Further, after acquiring the charging temperature and the number of charging cycles of the battery, the second control circuit 24 determines whether the acquired number of charging cycles and / or charging temperature meet a preset charging condition.

[0122] Wherein, judging whether the acquired number of charging cycles and / or charging temperature meets the preset charging condition includes: judging whether the number of charging cycles is greater than a preset number threshold, and / or whether the charging temperature is within a preset normal temperature range.

[0123] If the number of charging cycles is greater than a preset number threshold, and / or the charging temperature is not within a preset normal temperature range, it is determined that the preset charging condition is not met.

[0124] If the number of charging cycles is not greater than a preset number threshold, and / or the charging temperature is within a preset normal temperature range, it is determined that the preset charging condition is met.

[0125] The preset number threshold is the maximum number of cycles that the lithium battery pack can allow, which is related to the characteristics of the lithium battery pack. Different lithium battery packs have different preset number thresholds. The user can store the preset number threshold in advance by looking up the user manual of the lithium battery.

[0126] The preset normal temperature range is the temperature at which the lithium battery pack can work, and the preset normal temperature range is the temperature range pre-stored by the user according to the lithium battery manual. Preferably, the preset normal temperature range is -10°C-45°C, including the two endpoints of -10°C and 45°C. Based on this, when the charging temperature is less than -10°C or greater than 45°C, it is determined that the charging temperature is not within the preset normal temperature range; when the charging temperature is not less than -10°C and not greater than 45°C, it is determined that the charging temperature is within the preset normal temperature range.

[0127] When the second control circuit 24 determines that the acquired number of charging cycles and / or charging temperature meet the preset charging conditions, the target charging parameters are determined according to the number of charging cycles and the charging temperature, and the battery 10 is charged according to the determined target charging parameters.

[0128] Among them, determining the target charging parameters according to the number of charging cycles and the charging temperature specifically includes: the second control circuit 24 selects either the number of charging cycles or the charging temperature as the first index value, and the other as the second index value, each index value is used to select a corresponding preset index interval, and then under the first preset index interval corresponding to the first index value, determine the second preset index interval corresponding to the second index value, and determine the preset charging parameters corresponding to the second preset index interval as the target charging parameters.

[0129] The preset index interval includes a number index interval and a temperature index interval, and the number index interval corresponds to the temperature index interval. Specifically, each number index interval corresponds to all temperature index intervals, each temperature index interval also corresponds to all number index intervals, and a number index interval and a temperature index interval jointly determine the preset charging parameters.

[0130] For example, when the number index interval includes N<50, 50≤N<100, and the temperature index interval includes -10℃≤T<0℃, 0℃≤T<10℃, and 10℃≤T<40℃, the temperature index interval corresponding to the number index interval N<50 includes -10℃≤T<0℃, 0℃≤T<10℃, and 10℃≤T<40℃, and the temperature index interval corresponding to the number index interval 50≤N<100 includes -10℃≤T<0℃, 0℃≤T<10℃, and 10℃≤T<40℃; at the same time, the number index interval corresponding to the temperature index interval -10℃≤T<0℃ includes N<50, 50≤N<100, the number index interval corresponding to the temperature index interval 0℃≤T<10℃ includes N<50, 50≤N<100, and the number index interval corresponding to the temperature index interval 10℃≤T<40℃ includes N<50, 50≤N<100.

[0131] When the index value is the number of charging cycles, a corresponding preset index interval is selected in the number index interval; when the index value is the charging temperature, a corresponding preset index interval is selected in the temperature index interval.

[0132] Based on this, when determining the target charging parameter according to the number of charging cycles and the charging temperature, it is necessary to set an index order for the number of charging cycles and the charging temperature.

[0133] Specifically, the first index value is an index value used to first determine the preset index interval, and the second index value is an index value used to determine the preset index interval after the preset index interval is determined by the first index value.

[0134] When the number of charging cycles is selected as the first index value, the charging temperature is the second index value. At this time, after determining the first preset index interval in the number index interval according to the number of charging cycles, the second preset index interval is determined in the temperature index interval corresponding to the first preset index interval according to the charging temperature. The preset charging parameter corresponding to the second preset index interval is the preset charging parameter jointly determined by a number index interval and a temperature index interval, that is, the target charging parameter.

[0135] For example: when the number of charging cycles obtained by the second control circuit 24 is 20 and the charging temperature is 15°C, the second control circuit 24 determines that the first preset index interval is N<50 in the number index interval based on the number of charging cycles of 20 times, and determines that the temperature index interval corresponding to the first preset index interval includes -10°C≤T<0°C, 0°C≤T<10°C, and 10°C≤T<40°C. Then the second control circuit 24 determines that the second preset index interval is 10°C≤T<40°C in -10°C≤T<0°C, 0°C≤T<10°C, and 10°C≤T<40°C based on the charging temperature of 15°C. At this time, the preset charging parameter corresponding to 10°C≤T<40°C is 0.2C, and 0.2C is determined as the target charging parameter.

[0136] At this time, the first preset index interval is the number index interval, and the second preset index interval is the temperature index interval corresponding to the first preset index interval.

[0137] When the charging temperature is selected as the first index value, the number of charging cycles is the second index value. At this time, after determining the first preset index interval in the temperature index interval according to the charging temperature, the second preset index interval is determined in the number index interval corresponding to the first preset index interval according to the number of charging cycles. The preset charging parameter corresponding to the second preset index interval is the preset charging parameter determined by a number index interval and a temperature index interval, that is, the target charging parameter.

[0138] For example: when the number of charging cycles obtained by the second control circuit 24 is 20 and the charging temperature is 15°C, the second control circuit 24 determines that the first preset index interval is 10°C≤T<40°C in the temperature index interval based on the charging temperature of 15°C, and determines that the number index interval corresponding to the first preset index interval includes N<50, 50≤N<100, and then the second control circuit 24 determines that the second preset index interval is N<50 in N<50, 50≤N<100 based on the number of charging cycles of 20 times. At this time, the preset charging parameter corresponding to N<50 is 0.2C, and 0.2C is determined as the target charging parameter.

[0139] At this time, the first preset index interval is the temperature index interval, and the second preset index interval is the number index interval corresponding to the first preset index interval.

[0140] It can be understood that the second preset index interval is an interval that can directly determine the target charging parameter, and the types of the second preset index interval include a unidirectional current adjustment type interval and a current and voltage adjustment type interval.

[0141] If the type of the second preset index interval is a unidirectional current adjustment interval, the preset charging parameter corresponding to the second preset index interval includes a current parameter;

[0142] If the type of the second preset index interval is a current and voltage adjustment interval, the preset charging parameters corresponding to the second preset index interval include a current parameter and a voltage parameter.

[0143] Among them, the current parameter is a preset charging rate; the voltage parameter is a preset voltage multiple, and the preset voltage multiple is less than 1.

[0144] For example, when the charging temperature is the second index value, if the second preset index interval determined according to the charging temperature is 40°C ≤ T < 45°C, and the type of the second preset index interval is a current and voltage adjustment interval, then the corresponding preset charging parameters include current parameters and voltage parameters. By setting the current parameters and voltage parameters under high temperature conditions, the second control circuit can charge the battery with a lower voltage parameter when the charging temperature is too high to prevent circuit damage.

[0145] Further, when the determined target charging parameter is a preset charging rate, charging the battery 10 according to the target charging parameter specifically includes:

[0146] The actual charging current is determined according to the preset charging rate, and the battery 10 is charged with the actual charging current and the maximum charging voltage of the battery 10. At this time, the charging current becomes the actual charging current, and the charging voltage is still the maximum charging voltage of the battery.

[0147] The actual charging current is the product of the battery capacity of the battery 10 and the preset charging rate. Based on this, determining the actual charging current according to the preset charging rate includes:

[0148] The second control circuit 24 obtains the battery capacity from the battery 10 , and calculates the actual charging current according to the obtained battery capacity and the determined preset charging rate.

[0149] The maximum charging voltage of the battery 10 is determined by the battery 10 .

[0150] Among them, since the charging current becomes the actual charging current, the charging voltage is still the highest charging voltage of the battery. Therefore, when the battery 10 is charged with the actual charging current and the highest charging voltage of the battery 10, the second control circuit 24 controls the DC-DC circuit 233 to adjust the charging current to the actual charging current, but does not adjust the charging voltage, so that the charging voltage remains at the highest charging voltage of the battery; then the second control circuit 24 controls the second main circuit switch 22 to close, so that the charging voltage and the charging current adjusted by the DC-DC circuit 233 can be input to the first power port 11 through the second power port 21; the second control circuit 24 also sends a control command to the first control circuit 14, so that the first control circuit 14 controls the first main circuit switch 12 to close, so that the charging current and charging voltage input to the first power port 11 are input to the lithium battery pack 13, thereby charging the battery 10.

[0151] When the determined target charging parameters are a preset charging rate and a preset voltage multiple, charging the battery according to the target charging parameters specifically includes:

[0152] The actual charging current is determined according to the preset charging rate, the actual charging voltage is determined according to the preset voltage multiple, and the actual charging current and the actual charging voltage are used to charge the battery 10. At this time, the charging current becomes the actual charging current, and the charging voltage becomes the actual charging voltage.

[0153] The actual charging current is the product of the battery capacity of the battery 10 and the preset charging rate. Based on this, determining the actual charging current according to the preset charging rate includes:

[0154] The second control circuit 24 obtains the battery capacity from the battery 10 , and calculates the actual charging current according to the obtained battery capacity and the determined preset charging rate.

[0155] The actual charging voltage is the product of the maximum charging voltage of the battery 10 and the preset voltage multiple. Based on this, determining the actual charging voltage according to the preset voltage multiple includes:

[0156] The second control circuit 24 determines the maximum charging voltage of the battery 10 and calculates the actual charging voltage according to the determined maximum charging voltage and a preset voltage multiple.

[0157] Among them, since the charging current becomes the actual charging current and the charging voltage becomes the actual charging voltage, charging the battery 10 with the actual charging current and the actual charging voltage includes: the second control circuit 24 controls the DC-DC circuit 233 to adjust the charging current to the actual charging current and the charging voltage to the actual charging voltage; then the second control circuit 24 controls the second main circuit switch 22 to be closed, so that the charging current and charging voltage adjusted by the DC-DC circuit 233 can be input into the first power port 11 through the second power port 21; the second control circuit 24 also sends a control command to the first control circuit 14, so that the first control circuit 14 controls the first main circuit switch 12 to be closed, so that the charging current and charging voltage input into the first power port 11 are input into the lithium battery pack 13, so as to realize charging of the battery 10.

[0158] When the second control circuit 24 determines that the acquired number of charging cycles and / or charging temperature do not meet the preset charging conditions, charging is stopped.

[0159] Specifically, the second control circuit 24 controls the second main circuit switch 12 to be disconnected, so as to prohibit the charging device 20 from outputting the charging current and the charging voltage, thereby stopping charging.

[0160] For further information, see Figure 4a In some embodiments, the charging device 20 further includes an amplifier circuit 25, a filter circuit 26 and a voltage follower 27, the input end of the amplifier circuit 25 is electrically connected to the second control circuit 24, the output end of the amplifier circuit 25 is electrically connected to the input end of the filter circuit 26, the output end of the filter circuit 26 is electrically connected to the input end of the voltage follower 27, and the output end of the voltage follower 27 is electrically connected to the second main circuit switch 22.

[0161] Specifically, see Figure 4b The amplifier circuit 25 includes a first operational amplifier, a first resistor R1, a second resistor R2 and a third resistor R3. One end of the first resistor R1 is electrically connected to the second control circuit 24, and the other end is electrically connected to the non-inverting input terminal of the first operational amplifier; one end of the second resistor R2 is grounded, and the other end is electrically connected to the inverting input terminal of the first operational amplifier and one end of the third resistor R3; the other end of the third resistor R3 is electrically connected to the output terminal of the first operational amplifier.

[0162] The filter circuit 26 includes a first capacitor C1 and a second capacitor C2. One end of the first capacitor C1 is electrically connected to the other end of the third resistor R3 and the output end of the first operational amplifier. The other end of the first capacitor C1 is electrically connected to one end of the second capacitor C2. The other end of the second capacitor C2 is grounded.

[0163] The voltage follower 27 includes a fourth resistor R4, a second operational amplifier and a fifth resistor R5. One end of the fourth resistor R4 is electrically connected to the other end of the third resistor R3, the output end of the first operational amplifier and one end of the first capacitor C1, and the other end is electrically connected to the non-inverting input end of the second operational amplifier; one end of the fifth resistor R5 is electrically connected to the inverting input end of the second operational amplifier, and the other end is electrically connected to the output end of the second operational amplifier.

[0164] The amplifier circuit 25 is used to amplify the signal output by the second control circuit 24 ; the filter circuit 26 is used to filter the signal amplified by the amplifier circuit 25 ; and the voltage follower 27 is used to stabilize the signal input to the second main circuit switch 22 .

[0165] The switching rate can be increased by the amplifier circuit 25, the filter circuit 26 and the voltage follower 27, so that the second control circuit 24 can quickly control the charging device 20 to stop charging, thereby improving the safety of charging.

[0166] Of course, the circuit composed of the amplifier circuit 25, the filter circuit 26 and the voltage follower 27 described in this embodiment is only one example of achieving an increase in the switching rate, and any other circuit combination that can achieve the same effect is included in the patent protection scope of the present invention. The circuit structure of the amplifier circuit 25, the filter circuit 26 and the voltage follower 27 is not limited to the structure described in this embodiment.

[0167] See also Figure 5 In some other alternative embodiments, the battery 10 may not include the first main circuit switch 12. In this case, the lithium battery pack 13 is electrically connected to the first power port 11 and the first control circuit 14. The charging current and charging voltage input to the first power port 11 can be directly input to the lithium battery pack 13 without the need for control by the first control circuit 14.

[0168] See also Figure 6 In other alternative embodiments, the charging device 20 may not include the second main circuit switch 22. In this case, the power supply component 23 is electrically connected to the second power port 21 and the second control circuit 24 respectively. The charging current and charging voltage output by the power supply component 23 can be directly input to the first power port 11 through the second power port 21, without the need for the second control circuit 24 to control. At the same time, the second control circuit 24 cannot control the charging device 20 to stop charging when the charging temperature is not within the preset normal temperature range.

[0169] In an embodiment of the present invention, the charging device determines the target charging parameters for charging the battery in real time by acquiring the charging temperature and the number of charging cycles from the battery, so that the determined target charging parameters are adapted to the aging degree and temperature state of the battery, thereby improving the safety of charging.

[0170] Embodiment 2

[0171] See also Figure 7 , is a flow chart of a charging method provided by one embodiment of the present invention, which is applied to a charging device for charging a battery. The charging device is the charging device 20 described in the above embodiment, and the method provided by the embodiment of the present invention is executed by the above second control circuit 24, and is used to determine the target charging parameters for charging the battery in real time. The charging method includes:

[0172] S100: Obtaining the number of charging cycles and charging temperature of the battery.

[0173] In the embodiment of the present invention, the charging temperature is the surface temperature of the lithium battery pack in the battery, and the charging temperature may be an average value of the surface temperature of each lithium battery cell, or may be a maximum value of the surface temperature.

[0174] The number of charging cycles is the total number of full and partial discharge cycles of the lithium battery pack, which represents the degree of aging of the lithium battery pack in the battery. The greater the number of charging cycles, the greater the degree of aging of the lithium battery pack, and the smaller the charging current and charging voltage allowed when charging the lithium battery pack.

[0175] Acquiring the number of charging cycles and the charging temperature of the battery specifically includes: establishing a communication port with the battery, and acquiring the charging temperature and the number of charging cycles of the battery based on the communication port.

[0176] S300: Determine a target charging parameter according to the number of charging cycles and the charging temperature.

[0177] Among them, determining the target charging parameters according to the number of charging cycles and the charging temperature specifically includes: selecting either the number of charging cycles or the charging temperature as the first index value, and the other as the second index value, each index value is used to select a corresponding preset index interval, and then under the first preset index interval corresponding to the first index value, determining the second preset index interval corresponding to the second index value, and determining the preset charging parameters corresponding to the second preset index interval as the target charging parameters.

[0178] The preset index interval includes a number index interval and a temperature index interval, and the number index interval corresponds to the temperature index interval. Specifically, each number index interval corresponds to all temperature index intervals, each temperature index interval also corresponds to all number index intervals, and a number index interval and a temperature index interval jointly determine the preset charging parameters.

[0179] For example, when the number index interval includes N<50, 50≤N<100, and the temperature index interval includes -10℃≤T<0℃, 0℃≤T<10℃, and 10℃≤T<40℃, the temperature index interval corresponding to the number index interval N<50 includes -10℃≤T<0℃, 0℃≤T<10℃, and 10℃≤T<40℃, and the temperature index interval corresponding to the number index interval 50≤N<100 includes -10℃≤T<0℃, 0℃≤T<10℃, and 10℃≤T<40℃; at the same time, the number index interval corresponding to the temperature index interval -10℃≤T<0℃ includes N<50, 50≤N<100, the number index interval corresponding to the temperature index interval 0℃≤T<10℃ includes N<50, 50≤N<100, and the number index interval corresponding to the temperature index interval 10℃≤T<40℃ includes N<50, 50≤N<100.

[0180] When the index value is the number of charging cycles, a corresponding preset index interval is selected in the number index interval; when the index value is the charging temperature, a corresponding preset index interval is selected in the temperature index interval.

[0181] Based on this, when determining the target charging parameter according to the number of charging cycles and the charging temperature, it is necessary to set an index order for the number of charging cycles and the charging temperature.

[0182] Specifically, the first index value is an index value used to first determine the preset index interval, and the second index value is an index value used to determine the preset index interval after the preset index interval is determined by the first index value.

[0183] When the number of charging cycles is selected as the first index value, the charging temperature is the second index value. At this time, after determining the first preset index interval in the number index interval according to the number of charging cycles, the second preset index interval is determined in the temperature index interval corresponding to the first preset index interval according to the charging temperature. The preset charging parameter corresponding to the second preset index interval is the preset charging parameter jointly determined by a number index interval and a temperature index interval, that is, the target charging parameter.

[0184] For example: when the number of charging cycles obtained by the second control circuit 24 is 20 and the charging temperature is 15°C, the second control circuit 24 determines that the first preset index interval is N<50 in the number index interval based on the number of charging cycles of 20 times, and determines that the temperature index interval corresponding to the first preset index interval includes -10°C≤T<0°C, 0°C≤T<10°C, and 10°C≤T<40°C. Then the second control circuit 24 determines that the second preset index interval is 10°C≤T<40°C in -10°C≤T<0°C, 0°C≤T<10°C, and 10°C≤T<40°C based on the charging temperature of 15°C. At this time, the preset charging parameter corresponding to 10°C≤T<40°C is 0.2C, and 0.2C is determined as the target charging parameter.

[0185] At this time, the first preset index interval is the number index interval, and the second preset index interval is the temperature index interval corresponding to the first preset index interval.

[0186] When the charging temperature is selected as the first index value, the number of charging cycles is the second index value. At this time, after determining the first preset index interval in the temperature index interval according to the charging temperature, the second preset index interval is determined in the number index interval corresponding to the first preset index interval according to the number of charging cycles. The preset charging parameter corresponding to the second preset index interval is the preset charging parameter determined by a number index interval and a temperature index interval, that is, the target charging parameter.

[0187] For example: when the number of charging cycles obtained by the second control circuit 24 is 20 and the charging temperature is 15°C, the second control circuit 24 determines that the first preset index interval is 10°C≤T<40°C in the temperature index interval based on the charging temperature of 15°C, and determines that the number index interval corresponding to the first preset index interval includes N<50, 50≤N<100, and then the second control circuit 24 determines that the second preset index interval is N<50 in N<50, 50≤N<100 based on the number of charging cycles of 20 times. At this time, the preset charging parameter corresponding to N<50 is 0.2C, and 0.2C is determined as the target charging parameter.

[0188] At this time, the first preset index interval is the temperature index interval, and the second preset index interval is the number index interval corresponding to the first preset index interval.

[0189] It can be understood that the second preset index interval is an interval that can directly determine the target charging parameter, and the types of the second preset index interval include a unidirectional current adjustment type interval and a current and voltage adjustment type interval.

[0190] If the type of the second preset index interval is a unidirectional current adjustment interval, the preset charging parameter corresponding to the second preset index interval includes a current parameter;

[0191] If the type of the second preset index interval is a current and voltage adjustment interval, the preset charging parameters corresponding to the second preset index interval include a current parameter and a voltage parameter.

[0192] Among them, the current parameter is a preset charging rate; the voltage parameter is a preset voltage multiple, and the preset voltage multiple is less than 1.

[0193] For example, when the charging temperature is the second index value, if the second preset index interval determined according to the charging temperature is 40°C ≤ T < 45°C, and the type of the second preset index interval is a current and voltage adjustment interval, then the corresponding preset charging parameters include current parameters and voltage parameters. By setting the current parameters and voltage parameters under high temperature conditions, the second control circuit can charge the battery with a lower voltage parameter when the charging temperature is too high to prevent circuit damage.

[0194] S400: Charging the battery according to the target charging parameter.

[0195] When the determined target charging parameter is a preset charging rate, charging the battery according to the target charging parameter includes: determining an actual charging current according to the preset charging rate, and charging the battery with the actual charging current and the maximum charging voltage of the battery. At this time, the charging current becomes the actual charging current, and the charging voltage is still the maximum charging voltage of the battery.

[0196] Wherein, determining the actual charging current according to the preset charging rate includes: obtaining a battery capacity from the battery, and calculating the actual charging current according to the obtained battery capacity and the determined preset charging rate.

[0197] The actual charging current is the product of the battery capacity and the preset charging rate; the maximum charging voltage of the battery is determined by the battery.

[0198] Among them, since the charging current becomes the actual charging current, the charging voltage is still the maximum charging voltage of the battery. Therefore, when the battery is charged with the actual charging current and the maximum charging voltage of the battery, the DC-DC circuit 233 is controlled to adjust the charging current to the actual charging current, but the charging voltage is not adjusted, so that the charging voltage remains at the maximum charging voltage of the battery; then the second main circuit switch 22 is controlled to be closed, so that the charging voltage and the charging current adjusted by the DC-DC circuit 233 can be input into the first power port 11 through the second power port 21; and a control command is sent to the first control circuit 14 so that the first control circuit 14 controls the first main circuit switch 12 to be closed, so that the charging current and charging voltage input into the first power port 11 are input into the lithium battery pack 13, so as to charge the battery.

[0199] When the determined target charging parameters are a preset charging rate and a preset voltage multiple, charging the battery according to the target charging parameters includes: determining an actual charging current according to the preset charging rate, determining an actual charging voltage according to the preset voltage multiple, and charging the battery with the actual charging current and the actual charging voltage. At this time, the charging current becomes the actual charging current, and the charging voltage becomes the actual charging voltage.

[0200] Wherein, determining the actual charging current according to the preset charging rate includes: obtaining a battery capacity from the battery, and calculating the actual charging current according to the obtained battery capacity and the determined preset charging rate.

[0201] The actual charging current is the product of the battery capacity and the preset charging rate.

[0202] Wherein, determining the actual charging voltage according to the preset voltage multiple includes: determining the maximum charging voltage of the battery, and calculating the actual charging voltage according to the determined maximum charging voltage and the preset voltage multiple.

[0203] The actual charging voltage is the product of the maximum charging voltage of the battery and the preset voltage multiple; the maximum charging voltage of the battery is determined by the battery.

[0204] Among them, since the charging current becomes the actual charging current and the charging voltage becomes the actual charging voltage, when the battery is charged with the actual charging current and the actual charging voltage, the DC-DC circuit 233 is controlled to adjust the charging current to the actual charging current and the charging voltage to the actual charging voltage; then the second main circuit switch 22 is controlled to be closed, so that the charging current and charging voltage adjusted by the DC-DC circuit 233 can be input into the first power port 11 through the second power port 21; and a control command is also sent to the first control circuit 14, so that the first control circuit 14 controls the first main circuit switch 12 to be closed, so that the charging current and charging voltage input into the first power port 11 are input into the lithium battery pack 13, so as to realize charging of the battery.

[0205] For further information, see Figure 8 In some embodiments, when the temperature is too low or too high to determine the target charging parameter, in order to prevent the battery from being damaged by charging the battery when the temperature is too high or too low, before determining the target charging parameter according to the number of charging cycles and the charging temperature, the charging method further includes:

[0206] S200: Determine whether the number of charging cycles and / or the charging temperature meet a preset charging condition. If so, proceed to step S300; if not, proceed to step S500.

[0207] Wherein, judging whether the acquired number of charging cycles and / or charging temperature meets the preset charging condition includes: judging whether the number of charging cycles is greater than a preset number threshold, and / or whether the charging temperature is within a preset normal temperature range.

[0208] If the number of charging cycles is greater than a preset number threshold, and / or the charging temperature is not within a preset normal temperature range, it is determined that the preset charging condition is not met.

[0209] If the number of charging cycles is not greater than a preset number threshold, and / or the charging temperature is within a preset normal temperature range, it is determined that the preset charging condition is met.

[0210] The preset number threshold is the maximum number of cycles that the lithium battery pack can allow, which is related to the characteristics of the lithium battery pack. Different lithium battery packs have different preset number thresholds. The user can store the preset number threshold in advance by looking up the user manual of the lithium battery.

[0211] The preset normal temperature range is the temperature at which the lithium battery pack can work, and the preset normal temperature range is the temperature range pre-stored by the user according to the lithium battery manual. Preferably, the preset normal temperature range is -10°C-45°C, including the two endpoints of -10°C and 45°C. Based on this, when the charging temperature is less than -10°C or greater than 45°C, it is determined that the charging temperature is not within the preset normal temperature range; when the charging temperature is not less than -10°C and not greater than 45°C, it is determined that the charging temperature is within the preset normal temperature range.

[0212] S300: Determine a target charging parameter according to the number of charging cycles and the charging temperature.

[0213] This step is Figure 7 The steps S300 are the same as those shown, and will not be described in detail here.

[0214] S500: Stop charging.

[0215] Specifically, the second main circuit switch 12 is controlled to be disconnected to prohibit the charging device from outputting the charging current and the charging voltage, thereby stopping charging.

[0216] In an embodiment of the present invention, the target charging parameters for charging the battery are determined in real time by acquiring the charging temperature and the number of charging cycles from the battery, so that the determined target charging parameters are adapted to the aging degree and temperature state of the battery, thereby improving the safety of charging.

[0217] Embodiment 3

[0218] The term "module" used below refers to a combination of software and / or hardware that can implement a predetermined function. Although the devices described in the following embodiments can be implemented in software, implementation in hardware, or a combination of software and hardware, is also conceivable.

[0219] See also Fig. 9 , is a charging device provided by one embodiment of the present invention, the device is applied to a charging device for charging a battery, the charging device is the charging device 20 described in the above embodiment, and the functions of each module of the device provided by the embodiment of the present invention are performed by the above second control circuit 24, which is used to determine the target charging parameters for charging the battery in real time, the charging device includes:

[0220] An acquisition module 100, the acquisition module 100 is used to acquire the number of charging cycles and charging temperature of the battery;

[0221] A determination module 200, the determination module 200 is used to determine a target charging parameter according to the number of charging cycles and the charging temperature;

[0222] The charging module 300 is used to charge the battery according to the target charging parameter.

[0223] Furthermore, the acquisition module 100 is specifically used for:

[0224] establishing a communication port with the battery;

[0225] Based on the communication port, the number of charging cycles and the charging temperature of the battery are obtained.

[0226] Further, the determination module 200 is specifically used for:

[0227] Selecting either the number of charging cycles or the charging temperature as a first index value and the other as a second index value, each index value being used to select a corresponding preset index interval;

[0228] Determine, in a first preset index interval corresponding to the first index value, a second preset index interval corresponding to the second index value;

[0229] The preset charging parameter corresponding to the second preset index interval is determined as the target charging parameter.

[0230] Wherein, the types of the second preset index interval include a unidirectional current adjustment type interval and a current and voltage adjustment type interval;

[0231] If the type of the second preset index interval is a unidirectional current adjustment interval, the preset charging parameter corresponding to the second preset index interval includes a current parameter;

[0232] If the type of the second preset index interval is a current and voltage adjustment interval, the preset charging parameters corresponding to the second preset index interval include a current parameter and a voltage parameter.

[0233] Wherein, the current parameter is a preset charging rate;

[0234] The voltage parameter is a preset voltage multiple, wherein the preset voltage multiple is less than 1.

[0235] Further, when the determined target charging parameter is a preset charging rate, the charging module 300 is specifically used to:

[0236] Determining the actual charging current according to the preset charging rate;

[0237] The battery is charged with the actual charging current and the highest charging voltage of the battery.

[0238] The actual charging current is the product of the battery capacity of the battery and the preset charging rate.

[0239] Further, when the determined target charging parameters are a preset charging rate and a preset voltage multiple, the charging module 300 is specifically used to:

[0240] Determining the actual charging current according to the preset charging rate;

[0241] Determining the actual charging voltage according to the preset voltage multiple;

[0242] The battery is charged with the actual charging current and the actual charging voltage.

[0243] The actual charging voltage is the product of the maximum charging voltage of the battery and a preset voltage multiple.

[0244] For further information, see Fig.10 , the charging device also includes:

[0245] A judgment module 400, the judgment module 400 is used to judge whether the number of charging cycles and / or the charging temperature meet a preset charging condition;

[0246] If yes, determining a target charging parameter according to the number of charging cycles and the charging temperature;

[0247] If not, stop charging.

[0248] Furthermore, the determination module 400 is specifically used for:

[0249] It is determined whether the number of charging cycles is greater than a preset number threshold, and / or whether the charging temperature is within a preset normal temperature range.

[0250] Of course, in some other alternative embodiments, the acquisition module 100, the determination module 200, the charging module 300 and the judgment module 400 may be control chips.

[0251] Since the device embodiment and the method embodiment are based on the same concept, the content of the device embodiment may refer to the method embodiment under the premise that the contents do not conflict with each other, and they will not be described one by one here.

[0252] In an embodiment of the present invention, the target charging parameters for charging the battery are determined in real time by acquiring the charging temperature and the number of charging cycles from the battery, so that the determined target charging parameters are adapted to the aging degree and temperature state of the battery, thereby improving the safety of charging.

[0253] Embodiment 4

[0254] See also Fig.11 , is a schematic diagram of the hardware structure of a charging device provided by one embodiment of the present invention. The hardware module provided by the embodiment of the present invention can be integrated into the second control circuit 24 described in the above embodiment, and can also be directly set in the charging device as the second control circuit 24, so that the charging device can execute a charging method described in the above embodiment, and can also realize the functions of each module of a charging device described in the above embodiment. The charging device 20 includes:

[0255] One or more processors 241 and memory 242. Among them, Fig.11 A processor 241 is taken as an example.

[0256] The processor 241 and the memory 242 may be connected via a bus or other means. Fig.11 The example of connecting through bus is taken in the following.

[0257] The memory 242, as a non-volatile computer-readable storage medium, can be used to store non-volatile software programs, non-volatile computer executable programs and modules, such as program instructions corresponding to a charging method in the above-mentioned embodiment of the present invention and modules corresponding to a charging device (for example, acquisition module 100, determination module 200 and charging module 300, etc.). The processor 241 executes various functional applications and data processing of a charging method by running the non-volatile software programs, instructions and modules stored in the memory 242, that is, realizes the functions of a charging method in the above-mentioned method embodiment and each module in the above-mentioned device embodiment.

[0258] The memory 242 may include a program storage area and a data storage area, wherein the program storage area may store an operating system and application programs required for at least one function; the data storage area may store data created according to the use of a charging device, etc.

[0259] The data storage area also stores preset data, including preset index intervals, preset charging parameters, preset charging conditions, preset times thresholds, preset normal temperature ranges, etc.

[0260] In addition, the memory 242 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other non-volatile solid-state storage devices. In some embodiments, the memory 242 may optionally include a memory remotely arranged relative to the processor 241, and these remote memories may be connected to the processor 241 via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0261] The program instructions and one or more modules are stored in the memory 242. When executed by the one or more processors 241, the steps of a charging method in any of the above-mentioned method embodiments are performed, or the functions of each module of a charging device in any of the above-mentioned device embodiments are realized.

[0262] The above product can execute the method provided by the above embodiment of the present invention, and has the corresponding functional modules and beneficial effects of the execution method. For technical details not described in detail in this embodiment, please refer to the method provided by the above embodiment of the present invention.

[0263] The embodiment of the present invention further provides a non-volatile computer-readable storage medium, wherein the computer-readable storage medium stores computer-executable instructions, and the computer-executable instructions are executed by one or more processors, such as Fig.11 A processor 241 in the computer may enable the computer to execute each step of a charging method in any of the above method embodiments, or implement the functions of each module of a charging device in any of the above device embodiments.

[0264] An embodiment of the present invention further provides a computer program product, the computer program product comprising a computer program stored on a non-volatile computer-readable storage medium, the computer program comprising program instructions, when the program instructions are executed by one or more processors, for example Fig.11 A processor 241 in the computer may enable the computer to execute each step of a charging method in any of the above method embodiments, or implement the functions of each module of a charging device in any of the above device embodiments.

[0265] The device embodiments described above are merely illustrative, wherein the modules described as separate components may or may not be physically separated, and the components displayed as modules may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0266] Through the description of the above embodiments, a person of ordinary skill in the art can clearly understand that each embodiment can be implemented by means of software plus a general hardware platform, and of course, can also be implemented by hardware. A person of ordinary skill in the art can understand that all or part of the processes in the above embodiment methods can be completed by hardware related to computer program instructions, and the program can be stored in a computer-readable storage medium, and when the program is executed, it can include the processes of the implementation methods of the above methods. Among them, the storage medium can be a disk, an optical disk, a read-only memory (ROM) or a random access memory (RAM), etc.

[0267] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A charging method, the charging method is applied to a charging device, the charging device is used to charge a battery, characterized in that: The method comprises: Obtaining the number of charging cycles and charging temperature of the battery; determining a target charging parameter according to the number of charging cycles and the charging temperature; charging the battery according to the target charging parameter; The determining a target charging parameter according to the number of charging cycles and the charging temperature includes: Selecting either the number of charging cycles or the charging temperature as a first index value and the other as a second index value, each index value being used to select a corresponding preset index interval; In a first preset index interval corresponding to the first index value, determining a second preset index interval corresponding to the second index value, the first preset index interval corresponding to the second preset index interval; Determine a preset charging parameter corresponding to the second preset index interval as a target charging parameter; the type of the second preset index interval includes a unidirectional current adjustment interval and a current and voltage adjustment interval; If the type of the second preset index interval is a unidirectional current adjustment interval, the preset charging parameter corresponding to the second preset index interval includes a current parameter; If the type of the second preset index interval is a current and voltage adjustment interval, the preset charging parameters corresponding to the second preset index interval include a current parameter and a voltage parameter; The current parameter is a preset charging rate; The voltage parameter is a preset voltage multiple, wherein the preset voltage multiple is less than 1; When the determined target charging parameter is a preset charging rate, charging the battery according to the target charging parameter includes: Determining the actual charging current according to the preset charging rate; charging the battery with the actual charging current and the maximum charging voltage of the battery; When the determined target charging parameters are a preset charging rate and a preset voltage multiple, charging the battery according to the target charging parameters includes: Determining the actual charging current according to the preset charging rate; Determining the actual charging voltage according to the preset voltage multiple; The battery is charged with the actual charging current and the actual charging voltage.

2. The charging method according to claim 1, characterized in that: The actual charging current is the product of the battery capacity of the battery and the preset charging rate.

3. The charging method according to claim 1, characterized in that: The actual charging voltage is the product of the maximum charging voltage of the battery and a preset voltage multiple.

4. The charging method according to any one of claims 1 to 3, characterized in that: Before determining the target charging parameter according to the number of charging cycles and the charging temperature, the method further includes: Determining whether the number of charging cycles and / or the charging temperature meet a preset charging condition; If yes, determining a target charging parameter according to the number of charging cycles and the charging temperature; If not, stop charging.

5. The charging method according to claim 4, characterized in that: The determining whether the number of charging cycles and / or the charging temperature meets a preset charging condition includes: It is determined whether the number of charging cycles is greater than a preset number threshold, and / or whether the charging temperature is within a preset normal temperature range.

6. The charging method according to any one of claims 1 to 3, characterized in that: The obtaining of the number of charging cycles and the charging temperature of the battery includes: establishing a communication port with the battery; Based on the communication port, the number of charging cycles and the charging temperature of the battery are obtained.

7. A charging device for charging a battery, characterized in that: The device comprises: An acquisition module, the acquisition module is used to acquire the number of charging cycles and charging temperature of the battery; A determination module, the determination module is used to determine a target charging parameter according to the number of charging cycles and the charging temperature; a charging module, the charging module being used to charge the battery according to the target charging parameter; The determination module is specifically used for: Selecting either the number of charging cycles or the charging temperature as a first index value and the other as a second index value, each index value being used to select a corresponding preset index interval; Determine, in a first preset index interval corresponding to the first index value, a second preset index interval corresponding to the second index value; Determining a preset charging parameter corresponding to the second preset index interval as a target charging parameter; The types of the second preset index interval include a unidirectional current adjustment type interval and a current and voltage adjustment type interval; If the type of the second preset index interval is a unidirectional current adjustment interval, the preset charging parameter corresponding to the second preset index interval includes a current parameter; If the type of the second preset index interval is a current and voltage adjustment interval, the preset charging parameters corresponding to the second preset index interval include a current parameter and a voltage parameter; The current parameter is a preset charging rate; The voltage parameter is a preset voltage multiple, wherein the preset voltage multiple is less than 1; When the determined target charging parameter is a preset charging rate, the charging module is specifically used to: Determining the actual charging current according to the preset charging rate; charging the battery with the actual charging current and the maximum charging voltage of the battery; When the determined target charging parameters are a preset charging rate and a preset voltage multiple, the charging module is specifically used to: Determining the actual charging current according to the preset charging rate; Determining the actual charging voltage according to the preset voltage multiple; The battery is charged with the actual charging current and the actual charging voltage.

8. The charging device according to claim 7, characterized in that: The actual charging current is the product of the battery capacity of the battery and the preset charging rate.

9. The charging device according to claim 7, characterized in that: The actual charging voltage is the product of the maximum charging voltage of the battery and a preset voltage multiple.

10. The charging device according to any one of claims 7 to 9, characterized in that: The device also includes: A judgment module, the judgment module is used to judge whether the number of charging cycles and / or the charging temperature meet a preset charging condition; If yes, determining a target charging parameter according to the number of charging cycles and the charging temperature; If not, stop charging.

11. The charging device according to claim 10, characterized in that: The judgment module is specifically used for: It is determined whether the number of charging cycles is greater than a preset number threshold, and / or whether the charging temperature is within a preset normal temperature range.

12. The charging device according to any one of claims 7 to 9, characterized in that: The acquisition module is specifically used for: establishing a communication port with the battery; Based on the communication port, the number of charging cycles and the charging temperature of the battery are obtained.

13. A charging device, characterized in that: include: at least one processor; as well as A memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, the instructions being executed by the at least one processor so that the at least one processor can be used to execute the charging method as described in any one of claims 1-6.

14. A charging system, characterized in that: include: Battery; as well as The charging device as claimed in claim 13; The charging device communicates with the battery via a communication port.

15. A non-volatile computer-readable storage medium, characterized in that: The non-volatile computer-readable storage medium stores computer-executable instructions, and the computer-executable instructions are used to enable a charging device to execute the charging method according to any one of claims 1 to 6.

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