Battery aging system, method, device, equipment, storage medium and program product

Abstract

The invention relates to a battery aging system, method, device and equipment, a storage medium and a program product. The battery aging system comprises a high-voltage DC source and a control terminal. The high-voltage direct-current source is respectively connected with a power grid, a battery pack to be aged and the control terminal; the control terminal is connected with the battery pack; and the control terminal is used for controlling the high-voltage direct-current source and the battery pack so as to age the direct-current converter and the battery cell in the battery pack at the same time. By adopting the method, the aging process can be reduced, the time cost is saved, and the aging production efficiency is improved.

Description

Technical Field

[0001] This application relates to the technical field of battery manufacturing, and in particular to a battery aging system, method, device, equipment, storage medium and program product. Background Art

[0002] With the development of new energy technologies, battery packs are widely used in multiple fields. For example, new energy vehicles, intelligent robots, drones equipped with battery packs, and energy storage systems composed of battery packs.

[0003] Due to the changing battery requirements, higher-voltage battery packs are needed to support their high-power output and fast charging, so high-voltage battery packs have emerged. Such high-voltage battery packs are different from conventional battery packs in design. A high-voltage battery pack includes battery cells and a bidirectional DC-DC converter (Direct Current - Direct Current, DCDC). Due to its special design, when conducting product aging tests, the common method is to conduct aging tests on the battery cell part and the DCDC part separately, and then assemble them for factory shipment after passing the tests.

[0004] This way of aging in two steps and then assembling increases the aging steps and lengthens the total aging time, greatly reducing the aging efficiency. Summary of the Invention

[0005] Based on this, in view of the above technical problems, it is necessary to provide a battery aging system, method, device, equipment, storage medium and program product, which can reduce the aging process, save time costs, and improve the production efficiency of aging.

[0006] In a first aspect, this application provides a battery aging system. The battery aging system includes a high-voltage DC source and a control terminal; the high-voltage DC source is respectively connected to the power grid, the battery pack to be aged, and the control terminal; the control terminal is connected to the battery pack; the control terminal is used to control the high-voltage DC source and the battery pack to simultaneously age the DC converter and the battery cells in the battery pack.

[0007] In one embodiment, the battery aging system further includes an adapter box, and the adapter box is respectively connected to the high-voltage DC source, multiple battery packs, and the control terminal; the control terminal is used to control the adapter box to connect the high-voltage DC source to at least one battery pack.

[0008] In one embodiment, the adapter box includes an IO (In-Out) controller and a plurality of DC contactors. The IO controller is respectively connected to the control terminal and each DC contactor; each DC contactor is respectively connected to the high-voltage DC power source and a battery pack; the IO controller is configured to control the on / off of the DC contactor according to the on / off control instruction of the control terminal; the DC contactor is configured to connect or disconnect the connection between the high-voltage DC power source and the battery pack when conducting or cutting off.

[0009] In one embodiment, the adapter box further includes a low-voltage power supply, and the low-voltage power supply is respectively connected to each DC contactor and the IO controller; the low-voltage power supply is configured to supply power to each DC contactor and the IO controller.

[0010] In one embodiment, the battery aging system further includes a power meter; the power meter is connected to the battery pack through the adapter box, and the power meter is also connected to the control terminal; the power meter is configured to calculate the energy data of the battery pack according to the aging process data of the battery pack and transmit the energy data to the control terminal.

[0011] In one embodiment, the power meter includes a plurality of power channels, and the power channels are respectively connected to the battery pack through the adapter box in one-to-one correspondence.

[0012] In a second aspect, the present application provides a battery aging method, and the method includes:

[0013] Sending aging control instructions to the high-voltage DC power source and the battery pack to be aged in the battery aging system respectively; the aging control instruction is used to age the DC converter and the battery cells in the battery pack simultaneously; wherein, the battery aging system is as described in any one of the first aspect.

[0014] In one embodiment, the method further includes:

[0015] Sending an on / off control instruction to the adapter box of the battery aging system; the on / off control instruction is used to control the adapter box to connect or disconnect the connection between the high-voltage DC power source and at least one battery pack.

[0016] In one embodiment, the method further includes:

[0017] Receiving the energy data of the battery pack sent by the power meter;

[0018] Generating an aging result according to the energy data of the battery pack; the aging result is used to characterize whether the aging of the battery pack is qualified.

[0019] In a third aspect, the present application further provides a battery aging device, including:

[0020] The first instruction sending module is configured to send aging control instructions to the high-voltage DC power source of the battery aging system and the battery pack to be aged respectively; the aging control instructions are used to age the DC converter and the battery cells in the battery pack simultaneously; wherein, the battery aging system is as described in any one of the first aspects.

[0021] In a fourth aspect, the present application further provides a computer device, including a memory and a processor, where the memory stores a computer program, and when the processor executes the computer program, the steps described in any one of the second aspects are implemented.

[0022] In a fifth aspect, the present application further provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the steps described in any one of the second aspects are implemented.

[0023] In a sixth aspect, the present application further provides a computer program product, including a computer program, and when the computer program is executed by a processor, the steps described in any one of the second aspects are implemented.

[0024] For the above-mentioned battery aging system, method, device, equipment, storage medium and program product, the battery aging system includes a high-voltage DC power source and a control terminal; the control terminal controls the high-voltage DC power source and the battery pack to age the DC converter and the battery cells in the battery pack simultaneously. By using the battery aging system provided by the present application, while aging the battery cells in the battery pack, the DC converter in the battery pack is also controlled to work properly. Therefore, in this process, the DC converter is also aged, combining the two aging steps into one, reducing the aging process and saving time costs, and improving the production efficiency of aging. And since there is no need to additionally set up aging equipment for the DC converter and the battery cells, equipment costs can also be saved. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the following will briefly introduce the drawings required for use in the description of the embodiments or related technologies. Obviously, the drawings in the following description are only some embodiments of the present application, and those of ordinary skill in the art can obtain other drawings based on these drawings without creative efforts.

[0026] Figure 1 It is one of the schematic structural diagrams of the battery aging system in an embodiment;

[0027] Figure 2 It is the second schematic structural diagram of the battery aging system in an embodiment;

[0028] Figure 3 It is the third schematic structural diagram of the battery aging system in an embodiment;

[0029] Figure 4 It is the fourth structural schematic diagram of the battery aging system in an embodiment;

[0030] Figure 5 It is the fifth structural schematic diagram of the battery aging system in an embodiment;

[0031] Figure 6 It is the sixth structural schematic diagram of the battery aging system in an embodiment;

[0032] Figure 7 It is the flowchart of the steps for generating aging results in an embodiment;

[0033] Figure 8 It is the structural block diagram of the battery aging device in an embodiment;

[0034] Figure 9 It is the internal structure diagram of a computer device in an embodiment.

[0035] Reference numerals:

[0036] Battery aging system 10, power grid 20, battery pack 30, high-voltage DC source 11, control terminal 12

[0037] Adapter box 13, IO controller 131, DC contactor 132, low-voltage power supply 133

[0038] Interface T1, interface T2, interface T3, interface T4, power meter 14 Detailed implementation manners

[0039] In order to make the objectives, technical solutions and advantages of the present application clearer and more understandable, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0040] First, before specifically introducing the technical solutions of the embodiments of the present application, the technical background or the technical evolution context based on which the embodiments of the present application are introduced will be described first. With the development of new energy technologies, battery packs are widely used in multiple fields. For example, new energy vehicles equipped with battery packs, intelligent robots, drones, and energy storage systems composed of battery packs, etc. Due to the changing battery demand, a higher-voltage battery pack is required to support its high-power output and fast charging. Therefore, high-voltage battery packs have emerged. And this type of high-voltage battery pack is different from conventional battery packs in design. A high-voltage battery pack includes battery cells and a bidirectional DC-DC converter (DCDC). Due to its special design, when conducting product aging tests, the common method is to conduct aging tests on the battery cell part and the DCDC part separately, and then assemble them for factory shipment after passing the tests. This way of aging in two steps and then assembling increases the aging steps and lengthens the total aging time, greatly reducing the aging efficiency. In addition, when conducting aging tests, high-voltage battery packs involve higher voltages and currents, and have higher requirements for safety, stability, and complexity. The test equipment is required to be able to bear higher voltages and at the same time make more rigorous safety protection designs. Such an aging system has a high equipment price, and the cost far exceeds that of the aging system for ordinary battery packs.

[0041] In view of the above problems, the present application provides a battery aging system, which includes a high-voltage DC power source and a control terminal; the control terminal controls the high-voltage DC power source and the battery pack to simultaneously age the DC converter and the battery cells in the battery pack. By using the battery aging system provided by the present application, while aging the battery cells in the battery pack, the control terminal also controls the normal operation of the DC converter in the battery pack. Therefore, in this process, the DC converter also undergoes aging, combining the two-step aging into one, reducing the aging process and saving time costs, and improving the production efficiency of aging. Moreover, since there is no need to separately set up aging equipment for the DC converter and the battery cells, equipment costs can also be saved.

[0042] In an exemplary embodiment, as Figure 2 shown, the embodiments of the present application provide a battery aging system 10. The battery aging system 10 includes a high-voltage DC power source 11 and a control terminal 12; the high-voltage DC power source 11 is respectively connected to the power grid 20, the battery pack 30 to be aged, and the control terminal 12; the control terminal 12 is connected to the battery pack 30; the control terminal 12 is used to control the high-voltage DC power source 11 and the battery pack 30 to simultaneously age the DC converter and the battery cells in the battery pack 30. It should be noted that the solid lines in the figure represent the energy transmission routes, and the dashed lines represent the communication routes.

[0043] In an embodiment of the present application, the battery aging system 10 includes a high-voltage DC power source 11 and a control terminal 12. The battery pack 30 to be aged includes a DC converter and a battery cell assembly. The battery cell assembly includes a Battery Management System (BMS) and battery cells. The battery cells are respectively connected to the DC converter and the battery management system.

[0044] The control terminal 12 is respectively communicatively connected to the high-voltage DC power source 11, the DC converter in the battery pack 30, and the battery management system. The high-voltage DC power source 11 is electrically connected to the power grid 20 and the DC converter in the battery pack 30. During the aging process, the control terminal 12 controls the high-voltage DC power source 11 and the DC converter to form a power transmission path from the power grid 20 through the high-voltage DC power source 11, the DC converter to the battery cells, so that the power grid 20 charges the battery cells through the power transmission path, or the battery cells discharge to the power grid 20 through the power transmission path.

[0045] The battery cells are aged through charge and discharge cycles. At the same time, the DC converter operates normally, that is, the electronic devices in the DC converter are energized and run for a period of time to activate faults. Therefore, the DC converter is also aged.

[0046] The above high-voltage DC power source 11 can be replaced by a Power Conversion System (PCS). The power conversion system can play a role in voltage stabilization.

[0047] In the above embodiment, the battery aging system includes a high-voltage DC power source and a control terminal; the control terminal controls the high-voltage DC power source and the battery pack to age the DC converter and the battery cells in the battery pack simultaneously. By using the battery aging system provided by the present application, while aging the battery cells in the battery pack, the DC converter in the battery pack is also controlled to operate normally. Therefore, in this process, the DC converter is also aged, combining the two-step aging into one, reducing the aging process and saving time costs, and improving the production efficiency of aging. And since there is no need to additionally set up aging equipment for the DC converter and the battery cells, equipment costs can also be saved.

[0048] In an exemplary embodiment, as Figure 3 shown, the battery aging system 10 further includes a transfer box 13. The transfer box 13 is respectively connected to the high-voltage DC power source 11, a plurality of battery packs 30, and the control terminal 12; the control terminal 12 is used to control the transfer box 13 to connect the high-voltage DC power source 11 to at least one battery pack 30. It should be noted that the solid lines in the figure are energy transmission routes, and the dashed lines are communication routes.

[0049] In the embodiment of the present application, the battery aging system 10 further includes a junction box 13. The high-voltage DC power supply 11 is electrically connected to a plurality of battery packs 30 to be aged through the junction box 13. The control terminal 12 is communicatively connected to the high-voltage DC power supply 11, the junction box 13, and the plurality of battery packs 30 respectively.

[0050] During the aging process, the control terminal 12 controls the high-voltage DC power supply 11, the junction box 13, and the plurality of battery packs 30 respectively to form a power transmission path from the power grid 20 through the high-voltage DC power supply 11, the junction box 13 to the battery packs 30. Among them, the control of the junction box 13 by the control terminal 12 is to make the junction box 13 conduct the connection between the high-voltage DC power supply 11 and at least one battery pack 30. For example, when aging 1 battery pack 30, the control terminal 12 controls the junction box 13 to conduct the connection between the high-voltage DC power supply 11 and 1 battery pack 30; when aging 3 battery packs 30, the control terminal 12 controls the junction box 13 to conduct the connection between the high-voltage DC power supply 11 and 3 battery packs 30.

[0051] In some embodiments, the connection between the junction box 13 and the control terminal 12 can be realized through a CAN (Controller Area Network) bus.

[0052] In some embodiments, terminal resistors are provided at both the head and the tail of the CAN bus. The design of the anti-interference resistors at both ends of the CAN bus enables each battery pack 30 not to short-circuit the terminal resistor.

[0053] It can be understood that in the above manner, when any one of the plurality of battery packs 30 is aged, the connection between the high-voltage DC power supply 11 and this battery pack 30 can be cut off through the junction box 13, so as to remove this battery pack 30. After removal, a new battery pack 30 to be aged can be replaced and aged independently without affecting other battery packs 30 that are being aged.

[0054] Moreover, all the battery packs 30 are connected through the CAN bus, and the switching of a certain battery pack 30 does not affect the normal address allocation of other battery packs 30.

[0055] In the above embodiment, the battery aging system further includes a junction box, which is respectively connected to the high-voltage DC power supply, a plurality of battery packs, and the control terminal; the control terminal controls the junction box to connect the high-voltage DC power supply to at least one battery pack. In the embodiment of the present application, a junction box is provided between the high-voltage DC power supply and the battery pack. On the one hand, it can realize the simultaneous aging of multiple battery packs, thereby improving the production efficiency of aging. On the other hand, the aging of each battery pack is completed independently. When any one battery pack is removed after aging or when a problem occurs, it will not affect other battery packs that are being aged.

[0056] In an exemplary embodiment, such asFigure 3 As shown, the adapter box 13 includes an IO controller 131 and a plurality of DC contactors 132. The IO controller 131 is respectively connected to the control terminal 12 and each DC contactor 132; each DC contactor 132 is respectively connected to the high-voltage DC power source 11 and a battery pack 30; the IO controller 131 is configured to control the on / off of the DC contactor 132 according to the on / off control instruction of the control terminal 12; the DC contactor 132 is configured to conduct or cut off the connection between the high-voltage DC power source 11 and the battery pack 30. It should be noted that the solid lines in the figure are the energy transmission routes, and the dashed lines are the communication routes.

[0057] In the embodiment of the present application, the adapter box 13 includes an IO controller 131 and a plurality of DC contactors 132. The IO controller 131 is communicatively connected to the control terminal 12 and each DC contactor 132 respectively, and each DC contactor 132 is electrically connected to the high-voltage DC power source 11 and a battery pack 30 respectively. As Figure 3 shown, the DC contactor 132 is electrically connected to the battery pack 30 through interfaces T1, T2, and T3, and is electrically connected to the high-voltage DC power source 11 through interface T4.

[0058] In some embodiments, the on / off control instruction includes an on control instruction and an off control instruction.

[0059] During the aging process, the control terminal 12 sends an on control instruction to the IO controller 131; the IO controller 131 receives the on control instruction and controls the corresponding DC contactor 132 to conduct according to the on control instruction, and the DC contactor 132 can then conduct the connection between the high-voltage DC power source 11 and the battery pack 30. For example, after the IO controller 131 receives the on control instruction, it controls the DC contactor 132 connected to the first battery pack 30 to conduct, then the connection between the high-voltage DC power source 11 and the first battery pack 30 can be conducted; after the IO controller 131 receives the on control instruction, it controls the three DC contactors 132 connected to the three battery packs 30 to conduct, then the connection between the high-voltage DC power source 11 and the three battery packs 30 can be conducted.

[0060] When the control terminal 12 determines that the aging of the battery pack 30 is completed, it sends an off control instruction to the IO controller 131; the IO controller 131 receives the off control instruction and controls the corresponding DC contactor 132 to turn off according to the off control instruction, and the DC contactor 132 cuts off the connection between the high-voltage DC power source 11 and the battery pack 30. For example, after the IO controller 131 receives the off control instruction, it controls the DC contactor 132 connected to the first battery pack 30 to turn off, then the connection between the high-voltage DC power source 11 and the first battery pack 30 can be cut off;

[0061] The above DC contactor 132 may include an electromagnetic structure and a contact structure. The battery structure includes an iron core, an armature, and an electromagnetic coil, etc. The iron core and the armature are usually made of soft magnetic materials. When the electromagnetic coil is energized, a magnetic field is generated, causing the armature to overcome the spring force and be attracted, thereby driving the contacts to act. The contact structure includes main contacts and auxiliary contacts. The main contacts are used to connect and disconnect the main circuit and usually have a large rated current and arc extinguishing ability; the auxiliary contacts are used to control the circuit to achieve various control functions such as self-locking and interlocking.

[0062] After receiving the on-control instruction, the IO controller 131 can energize the electromagnetic coil of the DC contactor 132. The electromagnetic coil of the DC contactor 132 will generate a magnetic field, magnetize the iron core, and attract the armature. The armature moves under the action of the electromagnetic force, overcoming the reaction force of the spring, driving the contacts to close, thereby conducting the connection between the high-voltage DC source 11 and the battery pack 30. After receiving the off-control instruction, the IO controller 131 cuts off the power supply of the electromagnetic coil of the DC contactor 132, the magnetic field disappears, the armature returns to its original position under the action of the spring force, the contacts are disconnected, and the circuit is cut off.

[0063] In the above embodiment, the adapter box includes an IO controller and a plurality of DC contactors. The IO controller controls the on and off of the DC contactors according to the on-off control instructions of the control terminal; the DC contactors conduct or cut off the connection between the high-voltage DC source and the battery pack. In the embodiment of the present application, through the IO controller and the DC contactor, the on and off between the high-voltage DC source and the battery pack can be easily realized, so as to realize the independent aging of each battery pack, and further improve the safety and reliability of the battery aging system.

[0064] In an exemplary embodiment, as Figure 4 shown, the adapter box 13 further includes a low-voltage power supply 133. The low-voltage power supply 133 is respectively connected to each DC contactor 132 and the IO controller 131; the low-voltage power supply 133 is used to supply power to each DC contactor 132 and the IO controller 131. It should be noted that the solid lines in the figure are the energy transmission routes, and the dashed lines are the communication routes.

[0065] In some embodiments, the voltage of the low-voltage power supply 133 is 24V.

[0066] The embodiment of the present application uses a low-voltage power supply to supply power to each component in the adapter box, providing support for the normal operation of the adapter box.

[0067] In an exemplary embodiment, as Figure 5 shown, the battery aging system 10 further includes a power meter 14; the power meter 14 is connected to the battery pack 30 through the adapter box 13, and the power meter 14 is also connected to the control terminal 12; the power meter 14 is used to calculate the energy data of the battery pack 30 according to the aging process data of the battery pack 30 and transmit the energy data to the control terminal 12.

[0068] Among them, the aging process data includes data of various electrical parameters of the battery pack 30 during the aging process, including at least one of voltage data and current data.

[0069] In the embodiment of the present application, the battery aging system 10 includes a power meter 14. The power meter 14 is connected to the adapter box 13 and is connected to the battery pack 30 through the adapter box 13. During the aging process, the power meter 14 can collect the voltage data and current data of the battery pack 30, and calculate the energy data of the battery pack 30 according to the voltage data, current data, and the mapping relationship between voltage, current, and electric quantity.

[0070] For example, the voltage data includes charging voltage and discharging voltage, the current data includes charging current and discharging current, the energy data includes charging electric quantity and discharging electric quantity. The power meter 14 calculates the charging electric quantity of the battery pack 30 according to the charging voltage and charging current of the battery pack 30, and the power meter 14 calculates the discharging electric quantity of the battery pack 30 according to the discharging voltage and discharging current of the battery pack 30.

[0071] The power meter 14 is communicatively connected to the control terminal 12, and transmits the calculated energy data of the battery pack 30 to the control terminal 12. For example, the power meter 14 transmits the charging electric quantity of the battery pack 30 to the control terminal 12, and / or the power meter 14 transmits the discharging electric quantity of the battery pack 30 to the control terminal 12.

[0072] In the above embodiment, the power meter calculates the energy data of the battery pack according to the aging process data of the battery pack, and transmits the energy data to the control terminal. In the embodiment of the present application, the power meter is used to calculate the energy data of the battery pack, providing data support for the control terminal to determine whether the aging of the battery pack is qualified.

[0073] In an exemplary embodiment, as Figure 6 shown, the power meter 14 includes a plurality of power channels, and the power channels are connected to the battery pack 30 in one-to-one correspondence through the adapter box 13.

[0074] In the embodiment of the present application, the power meter 14 includes a plurality of power channels, and each power channel is connected to a battery pack 30 through the adapter box 13. For example, the power meter 14 includes 3 power channels. The first power channel is connected to the first battery pack 30 through the adapter box 13, the first power channel is connected to the second battery pack 30 through the adapter box 13, and the first power channel is connected to the third battery pack 30 through the adapter box 13.

[0075] Since the power channels are connected to the battery packs 30 in a one-to-one correspondence, the control terminal 12 can obtain the energy data of the corresponding battery pack 30 from the power channels. For example, the control terminal 12 can obtain the energy data of the first battery pack 30 from the first power channel, the control terminal 12 can obtain the energy data of the second battery pack 30 from the second power channel, and the control terminal 12 can obtain the energy data of the third battery pack 30 from the third power channel.

[0076] In the above embodiment, the power meter includes a plurality of power channels, and the power channels are connected to the battery packs in a one-to-one correspondence through an adapter box. In the embodiment of the present application, data of the battery pack connected correspondingly can be obtained through the power channels, and data acquisition, calculation and transmission can be carried out separately according to the power channels, so that the data processing processes of multiple battery packs do not affect each other, and the data processing efficiency is improved.

[0077] In an exemplary embodiment, a battery aging method is provided. Taking the method applied to the control terminal of the battery aging system in the above embodiment as an example, the method may include the following steps: the control terminal respectively sends aging control instructions to the high-voltage DC source and the battery pack to be aged in the battery aging system; the aging control instructions are used to age the DC converter and the battery cells in the battery pack simultaneously.

[0078] Wherein, the battery aging system includes a high-voltage DC source and a control terminal; the high-voltage DC source is respectively connected to the power grid, the battery pack to be aged and the control terminal; the control terminal is connected to the battery pack.

[0079] After the battery aging system and the battery pack to be tested are both turned on, the control terminal can detect the online status of each battery pack and whether there is a fault through the connection interface. After the detection result shows no abnormality, the control terminal can automatically establish a communication connection with the battery management system in the battery pack, or can establish a communication connection with the battery management system in the battery pack according to the trigger operation input by the user.

[0080] After the control terminal establishes a communication connection with the battery management system, it obtains battery pack information, where the battery pack information includes battery pack identification, battery pack address, battery pack type, etc. The control terminal can automatically select an aging process file according to the battery pack type, or can select an aging process file based on the selection operation input by the user. Then, the control terminal performs initialization processing, that is, sends process data to the battery pack according to the aging process file; the battery pack receives the process data and determines to enter the aging mode according to the process data.

[0081] After the battery pack enters the aging mode, the control terminal sends aging control instructions to the high-voltage DC source and the battery pack respectively. After receiving the aging control instruction, the high-voltage DC source conducts the connection between the power grid and the battery pack. After receiving the aging control instruction, the battery pack performs charge and discharge cycle processing according to the process step data to achieve the simultaneous aging of the DC converter and the battery cells.

[0082] The process step data may include the following:

[0083] Static process step: The battery pack stops operating, and the control terminal collects data of the battery pack during the static process step to obtain voltage data, current data, etc.

[0084] Constant current and constant voltage charging process step: Charge the battery cells in the battery pack with the preset charging voltage and charging current.

[0085] Constant current discharging process step: Discharge the battery cells in the battery pack with the preset discharging current.

[0086] One or more cut-off conditions are set for each process step, and the cut-off conditions are as follows:

[0087] Total voltage cut-off condition: Jump to the next process step when the voltage is lower than the set voltage value.

[0088] Battery current cut-off condition: Jump to the next process step when the current is less than the set current value (for the constant current and constant voltage process step).

[0089] Time cut-off condition: Jump to the next process step when the time reaches or exceeds the set time value.

[0090] Capacity cut-off condition: Jump to the next process step when the capacity (SOC, State of Charge) reaches or exceeds the set capacity value.

[0091] Exemplarily, the battery pack performs charge and discharge cycle processing according to the process step data:

[0092] (1) Stand still for 1 min and wait to enter the aging mode;

[0093] (2) Constant current discharge, and the discharge current can be 0.5C. The cut-off condition for this process step is that the total voltage is discharged to the cut-off point;

[0094] (3) Stand still for 10 min;

[0095] (4) Constant current and constant voltage charging, and the charging current can be 0.5C. The cut-off condition for this process step is that the charging current is less than or equal to 0.05C. And record the energy of this process step as the charging power.

[0096] (5) Stand still for 10 min.

[0097] (6) Constant current discharge, the discharge current can be 0.5C, and the cut-off condition of this step is that the total voltage is discharged to the cut-off point. In addition, the energy of this step is recorded as the discharge quantity.

[0098] (7) Let stand for 10 minutes.

[0099] In the above aging process, the battery cells in the battery pack are aged through charge and discharge cycles. At the same time, the DC converter in the battery pack operates normally. Even if the electronic devices in the DC converter are powered and run for a period of time, the fault is activated. Therefore, the DC converter is also aged.

[0100] In the above embodiment, the control terminal sends aging control instructions to the high-voltage DC source of the battery aging system and the battery pack to be aged respectively. The embodiment of the present application ages the DC converter while aging the battery cells in the battery pack. Therefore, the aging process can be reduced, time cost can be saved, and the aging production efficiency can be improved. In addition, since there is no need to set up additional aging equipment for the DC converter and the battery cells, equipment costs can also be saved.

[0101] In an exemplary embodiment, the battery aging system further includes a switching box, which is respectively connected to the high-voltage DC source, the plurality of battery packs, and the control terminal. The embodiment of the present application may also include: the control terminal sends an on-off control instruction to the switching box of the battery aging system; the on-off control instruction is used to control the switching box to conduct or disconnect the connection between the high-voltage DC source and at least one battery pack.

[0102] In some embodiments, the on-off control instruction includes an on-control instruction and an off-control instruction. After selecting the aging step file, the control terminal sends the on-control instruction to the adapter box; the adapter box conducts the connection between the high-voltage DC source and at least one battery pack according to the on-control instruction.

[0103] After the battery pack charge and discharge cycle, that is, after the last static step is completed, the control terminal sends a shutdown control instruction to the adapter box; the adapter box cuts off the connection between the high-voltage DC source and at least one battery pack according to the shutdown control instruction.

[0104] In some embodiments, the adapter box includes an IO controller and multiple DC contactors, and the IO controller is respectively connected to the control terminal and each DC contactor; each DC contactor is respectively connected to a high-voltage DC source and a battery pack.

[0105] After selecting the aging step file, the control terminal sends a connection control instruction to the IO controller of the adapter box; the IO controller controls the corresponding DC contactor to be turned on according to the connection control instruction, thereby connecting the high-voltage DC source to the battery pack corresponding to the DC contactor.

[0106] After the charge and discharge cycles of the battery pack, the control terminal sends a shutdown control instruction to the IO controller of the adapter box; the IO controller controls the corresponding DC contactor to shut down according to the shutdown control instruction, thereby cutting off the connection between the high-voltage DC source and the battery pack corresponding to the DC contactor.

[0107] In the above embodiment, the control terminal sends an on / off control instruction to the adapter box of the battery aging system. By setting the adapter box in the embodiments of the present application, simultaneous aging of multiple battery packs can be achieved, thereby improving the production efficiency of aging and realizing independent aging of the battery packs. Removing any battery pack will not affect other battery packs that are aging.

[0108] In an exemplary embodiment, the battery aging system further includes a power meter; the power meter is connected to the battery pack through the adapter box, and the power meter is also connected to the control terminal. As Figure 7 shown, the embodiments of the present application may further include the following steps:

[0109] Step 401, receiving the energy data of the battery pack sent by the power meter.

[0110] During the aging process, the power meter can collect data to obtain aging process data, and calculate the energy data of the battery pack according to the aging process data. For example, the power meter collects the voltage data and current data of the battery pack, and calculates the energy data of the battery pack according to the voltage data, current data, and the mapping relationship between voltage, current, and electric quantity.

[0111] The power meter sends the energy data of the battery pack to the control terminal, and the control terminal receives the energy data of the battery pack. For example, the control terminal receives the charging power of the battery pack sent by the power meter, and / or receives the discharging power of the battery pack sent by the power meter.

[0112] Step 402, generating an aging result according to the energy data of the battery pack; the aging result is used to characterize whether the aging of the battery pack is qualified.

[0113] An aging evaluation criterion is preset in the control terminal. Among them, the aging evaluation criterion may include at least one of the charging power being greater than a preset charging power threshold, the discharging power being greater than a preset discharging power threshold, the charging power being within a preset charging power range, and the discharging power being within a preset discharging power range.

[0114] After receiving the energy data of the battery pack, the control terminal determines whether the aging of the battery pack is qualified according to the energy data and the aging evaluation criterion, and obtains an aging result according to whether the aging is qualified.

[0115] For example, if the charged power of the battery pack is not within the preset charged power range, an aging result indicating that the aging of the battery pack is unqualified is obtained; if the charged power of the battery pack is within the preset charged power range and the discharged power of the battery pack is within the preset discharged power range, an aging result indicating that the aging of the battery pack is qualified is obtained.

[0116] It should be noted that the aging evaluation criteria are not limited to the above examples, and the method of generating the aging result based on the energy data is also not limited to the above examples.

[0117] In some embodiments, after the aging result is generated, the aging result can be archived, or an aging report can be generated based on the aging process data, energy data, aging result, etc. The aging report can be used to record, archive, evaluate, and trace back the aging result.

[0118] In the above embodiments, the energy data of the battery pack sent by the power meter is received; the aging result is generated based on the energy data of the battery pack. In the embodiments of the present application, the control terminal can automatically evaluate whether the aging of the battery pack is qualified and automatically generate an aging report, making the result of battery aging more intuitive and facilitating the recording, archiving, and tracing back of the battery aging process.

[0119] It should be understood that although the steps in the flowcharts involved in the above-described embodiments are sequentially shown according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless there is a clear description in this article, the execution of these steps has no strict order limit, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above-described embodiments may include multiple steps or multiple stages. These steps or stages are not necessarily executed at the same moment, but can be executed at different moments. The execution order of these steps or stages is not necessarily sequential, but can be executed alternately or in turn with at least a part of other steps or steps or stages in other steps.

[0120] Based on the same inventive concept, the embodiments of the present application also provide a battery aging device for implementing the battery aging method described above. The solution provided by this device to solve the problem is similar to the solution described in the above method. Therefore, the specific limitations in one or more of the following embodiments of the battery aging device can refer to the limitations on the battery aging method in the above text, and will not be repeated here.

[0121] In an exemplary embodiment, as Figure 8 shown, a battery aging device is provided, and the device includes:

[0122] The first instruction sending module 501 is configured to send aging control instructions to the high-voltage DC power source of the battery aging system and the battery pack to be aged respectively; the aging control instructions are used to age the DC converter and the battery cells in the battery pack simultaneously; wherein, the battery aging system is as described in any one of the first aspects.

[0123] In one embodiment, the device further includes:

[0124] The second instruction sending module is configured to send on / off control instructions to the adapter box of the battery aging system; the on / off control instructions are used to control the adapter box to conduct or disconnect the connection between the high-voltage DC power source and at least one battery pack.

[0125] In one embodiment, the device further includes:

[0126] The energy data receiving module is configured to receive the energy data of the battery pack sent by the power meter;

[0127] The aging result generating module is configured to generate an aging result according to the energy data of the battery pack; the aging result is used to characterize whether the aging of the battery pack is qualified.

[0128] Each module in the above battery aging device can be implemented in whole or in part by software, hardware, and their combination. The above modules can be embedded in the processor of the computer device in hardware form or independent of it, or stored in the memory of the computer device in software form, so that the processor can call and execute the operations corresponding to the above respective modules.

[0129] In an exemplary embodiment, a computer device is provided. The computer device can be a terminal, and its internal structure diagram can be as Figure 9As shown in the figure. The computer device includes a processor, a memory, an input / output interface, a communication interface, a display unit, and an input device. Among them, the processor, the memory, and the input / output interface are connected through a system bus, and the communication interface, the display unit, and the input device are connected to the system bus through the input / output interface. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The input / output interface of the computer device is used to exchange information between the processor and external devices. The communication interface of the computer device is used to communicate with external terminals in a wired or wireless manner, and the wireless manner can be implemented through WIFI, a mobile cellular network, NFC (Near Field Communication), or other technologies. The computer program, when executed by the processor, implements a battery aging method. The display unit of the computer device is used to form a visually visible picture, which can be a display screen, a projection device, or a virtual reality imaging device. The display screen can be a liquid crystal display screen or an electronic ink display screen. The input device of the computer device can be a touch layer covering the display screen, or a button, a trackball, or a touchpad provided on the housing of the computer device, or an external keyboard, touchpad, or mouse, etc.

[0130] Those skilled in the art can understand that Figure 9 the structure shown in the figure is only a block diagram of some structures related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.

[0131] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory including instructions. The above instructions can be executed by the processor of the electronic device to complete the above method. For example, the non-transitory computer-readable storage medium may be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, and an optical data storage device, etc.

[0132] In an exemplary embodiment, a computer program product is also provided. When the computer program is executed by the processor, the above method can be implemented. The computer program product includes one or more computer instructions. When these computer instructions are loaded and executed on a computer, the above method can be partially or fully implemented according to the process or function described in the embodiments of the present application.

[0133] Those of ordinary skill in the art can understand that all or part of the processes in the methods of the above embodiments can be completed by instructing relevant hardware through a computer program. The computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above methods. Among them, any reference to a memory, database, or other medium used in the embodiments provided in the present application can include at least one of non-volatile and volatile memories. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetoresistive random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM), etc. The databases involved in the embodiments provided in the present application can include at least one of relational databases and non-relational databases. Non-relational databases can include distributed databases based on blockchain, etc., without limitation. The processors involved in the embodiments provided in the present application can be general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logic devices, data processing logics based on quantum computing, etc., without limitation.

[0134] The technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0135] The above-described embodiments only represent several implementation manners of the present application. The description is relatively specific and detailed, but it should not be construed as a limitation on the patent scope of the present application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A battery aging system, characterized in that: The battery aging system includes a high-voltage direct current source and a control terminal; the high-voltage direct current source is connected to a power grid, a battery pack to be aged, and the control terminal respectively; the control terminal is connected to the battery pack; The control terminal is used to control the high-voltage DC source and the battery pack to simultaneously age the DC converter and the battery cells in the battery pack.

2. The battery aging system according to claim 1, characterized in that: The battery aging system further includes a switching box, which is respectively connected to the high-voltage DC source, the plurality of battery packs and the control terminal; The control terminal is used to control the adapter box to connect the high-voltage direct current source to at least one of the battery packs.

3. The battery aging system according to claim 2, characterized in that: The adapter box includes an IO controller and a plurality of DC contactors, wherein the IO controller is respectively connected to the control terminal and each of the DC contactors; each of the DC contactors is respectively connected to the high-voltage DC source and one of the battery packs; The IO controller is used to control the on and off of the DC contactor according to the on and off control instructions of the control terminal; The DC contactor is used to connect or disconnect the high-voltage DC source and the battery pack.

4. The battery aging system according to claim 3, characterized in that: The adapter box also includes a low-voltage power supply, which is connected to each of the DC contactors and the IO controller respectively; The low-voltage power supply is used to supply power to each of the DC contactors and the IO controller.

5. The battery aging system according to claim 2, characterized in that: The battery aging system further includes a power meter; the power meter is connected to the battery pack via the adapter box, and the power meter is also connected to the control terminal; The power meter is used to calculate the energy data of the battery pack according to the aging process data of the battery pack, and transmit the energy data to the control terminal.

6. The battery aging system according to claim 5, characterized in that: The power meter includes a plurality of power channels, and the power channels are connected to the battery packs in a one-to-one correspondence through the adapter box.

7. A battery aging method, characterized in that: The method comprises: Aging control instructions are sent to the high-voltage DC source of the battery aging system and the battery pack to be aged respectively; the aging control instructions are used to simultaneously age the DC converter and the battery cells in the battery pack; wherein the battery aging system is as described in any one of claims 1-6.

8. The method according to claim 7, characterized in that The method further comprises: Sending an on-off control instruction to the adapter box of the battery aging system; the on-off control instruction is used to control the adapter box to turn on or off the connection between the high-voltage direct current source and at least one of the battery packs.

9. The method according to claim 7, characterized in that: The method further comprises: Receive energy data of the battery pack sent by the power meter; An aging result is generated according to the energy data of the battery pack; the aging result is used to indicate whether the aging of the battery pack is qualified.

10. A battery aging device, characterized in that: The device comprises: A first instruction sending module is used to send aging control instructions to the high-voltage DC source of the battery aging system and the battery pack to be aged respectively; the aging control instructions are used to simultaneously age the DC converter and the battery cells in the battery pack; wherein the battery aging system is as described in any one of claims 1-6.

11. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the method according to any one of claims 7 to 8 are implemented.

12. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 7 to 8 are implemented.

13. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the steps of the method according to any one of claims 7 to 8 are implemented.

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