Battery switchgear, power supply system, battery pack testing method and device

Abstract

The present disclosure relates to the technical field of battery, and particularly relates to a battery switch cabinet, a power supply system, a battery pack testing method and device. The battery switch cabinet comprises a switch, a diode and a first battery pack, and the first battery pack comprises at least one first battery. The negative electrode of the first battery pack and the connection end of the positive electrode of the diode are the negative electrode of the battery switch cabinet, the positive electrode of the first battery pack is connected with the first end of the switch, and the second end of the switch and the connection end of the negative electrode of the diode are the positive electrode of the battery switch cabinet. The safety and convenience of the power supply system can be improved by using the present disclosure.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of batteries, and in particular to a battery switch cabinet, a power supply system, and a battery pack testing method and device. BACKGROUND

[0002] A power supply system is a whole composed of rectifying equipment, direct current distribution equipment, battery packs, direct current converters, rack power supply equipment and related distribution lines. The power supply system can provide various high and low frequency alternating and direct current power supplies for various devices to maintain the smooth operation of the devices.

[0003] The battery packs in the power supply system can be connected to a direct current output bus through corresponding battery switch cabinets. However, in the related art, the battery switch cabinet only includes one circuit breaker switch. When a single string battery pack in the power supply system independently discharges a load, the circuit breakers in the non-discharging battery packs are disconnected. If the discharging battery pack fails, neither the discharging battery pack nor the non-discharging battery pack can discharge the load, and the power supply system will stop supplying power to the load, which causes adverse effects on the load, thereby reducing the safety and convenience of the power supply system in use. SUMMARY

[0004] The present disclosure provides a battery switch cabinet, a power supply system, and a battery pack testing method and device to at least solve the problem of low safety and convenience of the power supply system in use in the related art. The technical solutions of the present disclosure are as follows:

[0005] According to a first aspect of an embodiment of the present disclosure, a battery switch cabinet is provided, comprising: a switch, a diode, and a first battery pack, the first battery pack comprising at least one first battery; wherein,

[0006] The negative electrode of the first battery pack and the connection end of the positive electrode of the diode are the negative electrode of the battery switch cabinet, the positive electrode of the first battery pack is connected with the first end of the switch, and the second end of the switch and the connection end of the negative electrode of the diode are the positive electrode of the battery switch cabinet.

[0007] Optionally, the first battery pack comprises at least two first batteries, and the at least two first batteries are connected in series.

[0008] According to a second aspect of an embodiment of the present disclosure, a power supply system is provided, comprising: a rectifying module and at least two groups of second battery packs, each second battery pack comprising a battery switch cabinet and at least one second battery, the battery switch cabinet being as described in any one of the preceding aspects; wherein,

[0009] The battery switch cabinet and the at least one second battery are connected in series;

[0010] The AC end of the rectifier module is the input end of the power supply system, the DC positive pole of the rectifier module and the connection end of the positive pole of the at least two groups of second battery groups are the DC positive output end of the power supply system, and the DC negative pole of the rectifier module and the connection end of the negative pole of the at least two groups of second battery groups are the DC negative output end of the power supply system.

[0011] Optionally, the at least one second battery is connected in series to form a third battery group.

[0012] The DC positive pole of the rectifier module is connected with the positive pole of the battery switch cabinet, the negative pole of the battery switch cabinet is connected with the positive pole of the third battery group, and the negative pole of the third battery group is connected with the DC negative pole of the rectifier module.

[0013] Alternatively,

[0014] The DC positive pole of the rectifier module is connected with the positive pole of the third battery group, the negative pole of the third battery group is connected with the positive pole of the battery switch cabinet, and the negative pole of the battery switch cabinet is connected with the DC negative pole of the rectifier module.

[0015] Optionally, a first number of second batteries in the at least one second battery are connected in series to form a fourth battery group, and a second number of second batteries in the at least one second battery are connected in series to form a fifth battery group.

[0016] The sum of the first number and the second number is the total number of batteries corresponding to the at least one second battery.

[0017] The DC positive pole of the rectifier module is connected with the positive pole of the fourth battery group, the negative pole of the fourth battery group is connected with the positive pole of the battery switch cabinet, the negative pole of the battery switch cabinet is connected with the positive pole of the fifth battery group, and the negative pole of the fifth battery group is connected with the DC negative pole of the rectifier module.

[0018] Optionally, the power supply system further comprises an inverter module, wherein,

[0019] The DC positive pole of the inverter module is connected with the DC positive pole of the rectifier module and the positive pole of the at least two groups of battery groups, and the DC negative pole of the inverter module is connected with the DC negative pole of the rectifier module and the negative pole of the at least two groups of battery groups.

[0020] The AC end of the inverter module is the AC output end of the power supply system.

[0021] Optionally, the rectifier module is a rectifier or a charger.

[0022] According to a third aspect of the embodiments of the present disclosure, a battery pack testing method is provided, applied to the power supply system in any of the preceding aspects, comprising:

[0023] in response to a test instruction for the sixth battery pack, controlling the rectifier module to be in a non-working state, controlling the first switch in the sixth battery pack to be closed, and controlling the second switch in the seventh battery pack to be opened, wherein the sixth battery pack is any one of the at least two groups of second battery packs, and the seventh battery pack is the second battery pack other than the sixth battery pack in the at least two groups of second battery packs;

[0024] if the sixth battery pack meets the discharge condition, controlling the sixth battery pack to supply power to the load, to obtain a discharge parameter corresponding to the sixth battery pack;

[0025] determining the performance of the sixth battery pack according to the discharge parameter.

[0026] Optionally, before the response to the test instruction for the sixth battery pack, the control of the rectifier module to be in the non-working state, the control of the first switch in the sixth battery pack to be closed, and the control of the second switch in the seventh battery pack to be opened, the method further comprises:

[0027] controlling the rectifier module to be in a working state, and controlling the switches in the at least two groups of second battery packs to be closed, to control the rectifier module to charge the at least two groups of second battery packs in the power supply system, and to control the rectifier module to supply power to the load.

[0028] Optionally, after the response to the test instruction for the sixth battery pack, the control of the rectifier module to be in the non-working state, the control of the first switch in the sixth battery pack to be closed, and the control of the second switch in the seventh battery pack to be opened, the method further comprises:

[0029] if the sixth battery pack does not meet the discharge condition, at least one second battery pack in the seventh battery pack supplies power to the load through the diode in the seventh battery pack.

[0030] According to a fourth aspect of the embodiments of the present disclosure, a battery pack testing device is provided, comprising:

[0031] a battery testing unit configured to perform the response to the test instruction for the sixth battery pack, the control of the rectifier module to be in the non-working state, the control of the first switch in the sixth battery pack to be closed, and the control of the second switch in the seventh battery pack to be opened, wherein the sixth battery pack is any one of the at least two groups of second battery packs, and the seventh battery pack is the second battery pack other than the sixth battery pack in the at least two groups of second battery packs;

[0032] The parameter acquisition unit is configured to perform, if the sixth battery pack meets a discharge condition, controlling the sixth battery pack to supply power to the load, to obtain a discharge parameter corresponding to the sixth battery pack.

[0033] The performance determination unit is configured to perform, according to the discharge parameter, determining the performance of the sixth battery pack.

[0034] Optionally, the battery pack testing apparatus further includes a battery charging unit configured to perform, before the rectifier module is controlled to be in a non-working state, the first switch in the sixth battery pack is controlled to be closed, and the second switch in the seventh battery pack is controlled to be opened in response to the test instruction for the sixth battery pack:

[0035] The battery charging unit is configured to perform, controlling the rectifier module to be in a working state, and controlling the switches in the at least two groups of second battery packs to be closed, to control the rectifier module to charge the at least two groups of second battery packs in the power supply system, and to control the rectifier module to supply power to the load.

[0036] Optionally, the battery pack testing apparatus further includes a battery charging unit configured to perform, before the rectifier module is controlled to be in a non-working state, the first switch in the sixth battery pack is controlled to be closed, and the second switch in the seventh battery pack is controlled to be opened in response to the test instruction for the sixth battery pack:

[0037] The battery charging unit is configured to perform, if the sixth battery pack does not meet the discharge condition, at least one second battery in the seventh battery pack supplies power to the load through a diode in the seventh battery pack.

[0038] According to a fifth aspect of the embodiments of the present disclosure, a power supply system is provided, including:

[0039] a processor;

[0040] a memory for storing instructions executable by the processor;

[0041] The processor is configured to execute the instructions to implement the battery pack testing method according to any one of the preceding aspects.

[0042] According to a sixth aspect of the present disclosure, a storage medium is provided, when instructions in the storage medium are executed by a processor of an electronic device, the electronic device is enabled to perform the battery pack testing method according to any one of the preceding aspects.

[0043] According to a seventh aspect of the present disclosure, a computer program product is provided, including a computer program, when the computer program is executed by a processor, the method according to any one of the preceding aspects is implemented.

[0044] The embodiments of the present disclosure provide at least the following beneficial effects:

[0045] In some or related embodiments, the battery switch cabinet comprises a switch, a diode and a first battery pack, the first battery pack comprising at least one first battery; wherein the negative pole of the first battery pack and the connection end of the positive pole of the diode are the negative pole of the battery switch cabinet, the positive pole of the first battery pack is connected with the first end of the switch, and the second end of the switch and the connection end of the negative pole of the diode are the positive pole of the battery switch cabinet. Therefore, by connecting the diode in parallel with the switch, the un-discharged battery pack connected with the battery switch cabinet can be kept in an online standby state, and when the discharged battery pack fails, the un-discharged battery pack can provide power supply for the load through the forward conduction of the diode, which can improve the redundancy of the power supply system during discharge, reduce the situation that the power supply system stops supplying power to the load and causes adverse effects on the load, and improve the safety and convenience of the power supply system in use.

[0046] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0047] The accompanying drawings incorporated in the specification and forming a part of it illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the disclosure without imposing undue limitation on the disclosure.

[0048] Figure 1 is a background schematic diagram of a power supply system according to an exemplary embodiment;

[0049] Figure 2 is a structural schematic diagram of a battery switch cabinet according to an exemplary embodiment;

[0050] Figure 3 is a structural schematic diagram of a first power supply system according to an exemplary embodiment;

[0051] Figure 4 is a structural schematic diagram of a second power supply system according to an exemplary embodiment;

[0052] Figure 5 is a structural schematic diagram of a third power supply system according to an exemplary embodiment;

[0053] Figure 6 is a structural schematic diagram of a fourth power supply system according to an exemplary embodiment;

[0054] Figure 7 is a flowchart of a first battery pack testing method according to an exemplary embodiment;

[0055] Figure 8 This is a schematic diagram illustrating a process of powering a sixth battery pack according to an exemplary embodiment;

[0056] Figure 9 This is a flowchart illustrating a second battery pack testing method according to an exemplary embodiment;

[0057] Figure 10 This is a schematic diagram illustrating a battery pack charging process according to an exemplary embodiment;

[0058] Figure 11 This is a schematic diagram illustrating a battery pack power supply process according to an exemplary embodiment;

[0059] Figure 12 This is a schematic diagram illustrating a power supply process for a seventh battery pack according to an exemplary embodiment;

[0060] Figure 13 This is a block diagram of a first type of battery pack testing apparatus according to an exemplary embodiment;

[0061] Figure 14 This is a block diagram of a second type of battery pack testing apparatus according to an exemplary embodiment;

[0062] Figure 15 This is a block diagram of a third battery pack testing apparatus according to an exemplary embodiment;

[0063] Figure 16 This is a block diagram illustrating a power supply system according to an exemplary embodiment. Detailed Implementation

[0064] To enable those skilled in the art to better understand the technical solutions of this disclosure, the technical solutions in the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings.

[0065] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this disclosure described herein can be implemented in orders other than those illustrated or described herein. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0066] Power System is a whole composed of rectifier equipment, DC power distribution equipment, battery pack, DC converter, rack power supply equipment and related distribution lines. Power System can provide various high and low frequency AC and DC power for various equipment, and maintain the smooth operation of the equipment. At the same time, the battery is a mature power storage method, which is widely used in the form of backup power in data centers, communications, medical treatment, industrial production and other fields with high requirements for power continuity. In the case of abnormal main power supply, the uninterrupted power supply to the load can be maintained through the discharge of the battery.

[0067] According to some embodiments, Figure 1 is a background schematic diagram of a power system according to an exemplary embodiment. Wherein, Figure 1 (a) is a DC power supply system; Figure 1 (b) is an AC power supply system.

[0068] In some embodiments, as shown in Figure 1 (a), the DC power supply system includes a rectifier module, two battery packs and two battery switch cabinets, the battery pack includes at least one series-connected battery, and the battery switch cabinet includes a circuit breaker, wherein the first end of the circuit breaker is connected with the positive pole of the rectifier module and the positive pole of the load respectively, the second end of the circuit breaker is connected with the positive pole of the battery pack, and the negative pole of the battery pack is connected with the negative pole of the rectifier module and the negative pole of the load respectively, so that the DC power supply system can perform high-voltage direct current (HVDC) power transmission to the load.

[0069] In some embodiments, as shown in Figure 1 (b), an inverter module is added on the basis of the DC power supply system, which can invert the DC power output by the DC power supply system into AC power, and then provide the AC uninterrupted power supply (UPS) for the load.

[0070] According to some embodiments, the discharge capacity of the battery pack is the most critical joint for the power system to ensure uninterrupted power supply. The main means to ensure the health and availability of the power system after commissioning and operation usually include online monitoring of voltage / internal resistance / temperature, daily inspection, periodic discharge test, replacement of abnormal batteries, etc. Although these operation and maintenance measures are adopted, the events of power supply interruption of the load caused by insufficient discharge capacity of the battery still occur from time to time, one of the important reasons for which is that the battery discharge test in the running stage is affected by the actual load rate and cannot fully verify the discharge performance of the battery.

[0071] In some embodiments, as shown in Figure 1(a) as shown, when it carries out the battery discharge test, the rectifier module needs to be closed, the control breaker F1 and the breaker F2 are closed to realize the battery pack B1 and the battery pack B2 directly discharging the load as a whole, and the rectifier module is started after the discharge is completed.

[0072] It is easy to understand that when the battery discharge test is carried out by using the discharge mode of directly discharging the load as a whole, the battery discharge power and intensity are completely determined by the load rate, and the battery discharge performance cannot be fully verified. For example, in the 2N power supply architecture, when the IT load rate is 100%, the battery discharge power can reach a maximum of 50%, and the full-load discharge performance of the battery cannot be effectively tested.

[0073] In some embodiments, the rectifier module can be closed, the control breaker F1 is closed, and the control breaker F2 is opened to realize that the battery pack B1 independently discharges the load, but the discharge power and intensity are twice that of the battery pack B1 and the battery pack B2 discharging the load at the same time. If the battery pack B1 fails during discharge, the battery pack B1 and the battery pack B2 cannot protect the load and cannot supply power to the load.

[0074] It is easy to understand that although the test effect of discharging the load independently in the string is better than that of discharging the load directly as a whole, the redundancy of the power supply system is reduced during discharge, and the probability of inducing load power interruption increases when the main power supply fails, thereby reducing the safety and convenience of the power supply system during use.

[0075] Figure 2 It is a structural schematic diagram of a battery switch cabinet according to an exemplary embodiment. As shown in the figure, Figure 2 The battery switch cabinet includes a switch F, a diode D, and a first battery pack B3 including at least one first battery; wherein,

[0076] The negative electrode of the first battery pack B3 and the connection end of the positive electrode of the diode D are the negative electrode of the battery switch cabinet, the positive electrode of the first battery pack B3 is connected with the first end of the switch F, and the second end of the switch F and the connection end of the negative electrode of the diode D are the positive electrode of the battery switch cabinet.

[0077] According to some embodiments, the switch F is not a specific fixed switch. The switch F includes but is not limited to a relay, a breaker, a contactor, etc.

[0078] Optionally, the first battery pack B3 includes at least two first batteries, and the at least two first batteries are connected in series.

[0079] In summary, the battery switch cabinet provided by the embodiments of the present disclosure includes a switch, a diode, and a first battery pack, the first battery pack includes at least one first battery; wherein the negative electrode of the first battery pack and the connection end of the positive electrode of the diode are the negative electrode of the battery switch cabinet, the positive electrode of the first battery pack is connected with the first end of the switch, and the second end of the switch and the connection end of the negative electrode of the diode are the positive electrode of the battery switch cabinet. Therefore, by connecting the diode in parallel with the switch, the un-discharged battery pack connected with the battery switch cabinet can be kept in an online standby state, and when the discharged battery pack fails, the un-discharged battery pack can provide power supply for the load through the forward conduction of the diode, the redundancy of the power supply system during discharging can be improved, the situation that the power supply system stops supplying power to the load and causes adverse effects on the load can be reduced, and the safety and convenience of the power supply system during use can be improved.

[0080] Figure 3 is a structural schematic diagram of a first power supply system according to an exemplary embodiment. As shown in Figure 3 , the power supply system includes a rectifier module and at least two groups of second battery packs, the second battery pack includes a battery switch cabinet and at least one second battery as shown in Figure 2 , wherein

[0081] the battery switch cabinet and the at least one second battery are connected in series;

[0082] the alternating current end of the rectifier module is the input end of the power supply system, the direct current positive electrode of the rectifier module and the connection end of the positive electrode of the at least two groups of second battery packs are the direct current positive output end of the power supply system, and the direct current negative electrode of the rectifier module and the connection end of the negative electrode of the at least two groups of second battery packs are the direct current negative output end of the power supply system.

[0083] According to some embodiments, the rectifier module refers to a module for converting alternating current into direct current. The rectifier module does not refer to a fixed module. The rectifier module includes but is not limited to a rectifier, a charger, etc.

[0084] According to some embodiments, the battery model of the at least one second battery in the second battery pack can be the same as the battery model of the at least one first battery in the battery switch cabinet.

[0085] In some embodiments, when the positive electrode of the load is connected with the direct current positive output end of the power supply system and the negative electrode of the load is connected with the direct current negative output end of the power supply system, the power supply system can provide direct current power supply for the load.

[0086] In the embodiments of the present disclosure, the connection sequence of the battery switch cabinet and the at least one second battery connected in series is not limited. That is, the battery switch cabinet can be arranged at the positive electrode, the negative electrode, or the middle of the at least one second battery.

[0087] In some embodiments, Figure 4is a structural schematic diagram of a second power supply system according to an exemplary embodiment. As shown in Figure 4 at least one second battery is connected in series to form a third battery pack; wherein,

[0088] the positive pole of the direct current of the rectifier module is connected to the positive pole of the battery switch cabinet, the negative pole of the battery switch cabinet is connected to the positive pole of the third battery pack, and the negative pole of the third battery pack is connected to the negative pole of the direct current of the rectifier module, as shown in Figure 4 (a);

[0089] Alternatively,

[0090] the positive pole of the direct current of the rectifier module is connected to the positive pole of the third battery pack, the negative pole of the third battery pack is connected to the positive pole of the battery switch cabinet, and the negative pole of the battery switch cabinet is connected to the negative pole of the direct current of the rectifier module, as shown in Figure 4 (b).

[0091] In some embodiments, Figure 5 is a structural schematic diagram of a third power supply system according to an exemplary embodiment. As shown in Figure 5 at least one second battery is connected in series to form a fourth battery pack, and at least one second battery is connected in series to form a fifth battery pack; wherein,

[0092] the sum of the first number and the second number is the total number of batteries corresponding to the at least one second battery;

[0093] the positive pole of the direct current of the rectifier module is connected to the positive pole of the fourth battery pack, the negative pole of the fourth battery pack is connected to the positive pole of the battery switch cabinet, the negative pole of the battery switch cabinet is connected to the positive pole of the fifth battery pack, and the negative pole of the fifth battery pack is connected to the negative pole of the direct current of the rectifier module.

[0094] According to some embodiments, the first number and the second number are positive integers.

[0095] It is easy to understand that the connection order of the battery switch cabinet and the at least one second battery connected in series can be adjusted according to needs, so as to improve the flexibility of the power supply system in use.

[0096] In the embodiments of the present disclosure, Figure 6 is a structural schematic diagram of a fourth power supply system according to an exemplary embodiment. As shown in Figure 6 the power supply system further comprises an inverter module, wherein,

[0097] the positive pole of the direct current of the inverter module is connected to the positive pole of the direct current of the rectifier module and the positive pole of the at least two second battery packs, respectively, and the negative pole of the direct current of the inverter module is connected to the negative pole of the direct current of the rectifier module and the negative pole of the at least two second battery packs, respectively;

[0098] The AC end of the inverter module is an AC output end of the power supply system.

[0099] According to some embodiments, the inverter module refers to a module for converting direct current into alternating current. The inverter module is not particularly limited to a fixed module. The inverter module includes but is not limited to inverters and the like.

[0100] In some embodiments, the AC end of the load is connected to the AC output end of the power supply system, so that the power supply system can provide AC power for the load.

[0101] In the embodiments of the present disclosure, the power supply system can further include an input switch and an output switch; wherein,

[0102] The first end of the input switch is connected to the positive DC end of the rectifier module, the second end of the input switch is respectively connected to the positive end of the at least two groups of battery banks and the first end of the output switch, and the second end of the output switch is a DC positive output end of the power supply system.

[0103] It is easy to understand that the input switch and the output switch are provided to provide safety of the power supply system. At the same time, when it is needed to control the rectifier module to be in a non-working state and control the battery bank to be discharged for testing, the rectifier module can be controlled to be in a non-working state by disconnecting the input switch, without the need to control the internal switch of the rectifier module to make the rectifier module closed. Therefore, the convenience of using the power supply system can be improved.

[0104] In summary, the power supply system provided by the embodiments of the present disclosure includes a rectifier module and at least two groups of second battery banks, the second battery bank includes a battery switch cabinet and at least one second battery; wherein, the battery switch cabinet and the at least one second battery are connected in series; the AC end of the rectifier module is an input end of the power supply system, the positive DC end of the rectifier module and the connection end of the positive end of the at least two groups of second battery banks are a DC positive output end of the power supply system, and the negative DC end of the rectifier module and the connection end of the negative end of the at least two groups of second battery banks are a DC negative output end of the power supply system. Therefore, by connecting a diode in parallel with the switch, the un-discharged battery bank connected with the battery switch cabinet can be kept in an online standby state, and when the discharged battery bank fails, the un-discharged battery bank can provide power for the load through the forward conduction of the diode, the redundancy of the power supply system during discharging can be improved, the situation that the power supply system stops supplying power to the load and causes adverse effects on the load can be reduced, and the safety and convenience of using the power supply system can be improved.

[0105] Figure 7 is a flow chart of a first battery bank test method according to an exemplary embodiment, as shown in Figure 7 the battery bank test method can be applied to Figures 2 to 6 any of the power supply systems shown, including the following steps:

[0106] In step S11, in response to a test instruction for the sixth battery pack, the rectifier module is controlled to be in a non-working state, the first switch in the sixth battery pack is controlled to be closed, and the second switch in the seventh battery pack is controlled to be opened.

[0107] According to some embodiments, the sixth battery pack refers to any one of the at least two second battery packs in the power supply system.

[0108] In some embodiments, the seventh battery pack refers to a second battery pack in the power supply system other than the sixth battery pack. The number of the seventh battery pack can be at least one.

[0109] In some embodiments, the first switch refers to a switch in the battery switch cabinet of the sixth battery pack. The second switch refers to a switch in the battery switch cabinet of the seventh battery pack. The number of the second switch can be at least one.

[0110] According to some embodiments, the test instruction refers to an instruction used when discharging test is performed on the battery pack in the power supply system. The test instruction is not limited to a specific instruction. For example, the test instruction can be changed when a modification instruction for the test instruction is obtained.

[0111] It is easy to understand that when the power supply system performs battery pack test, in response to a test instruction for the sixth battery pack, the power supply system can control the rectifier module to be in a non-working state, control the first switch in the sixth battery pack to be closed, and control the second switch in the seventh battery pack to be opened.

[0112] In step S12, if the sixth battery pack meets a discharge condition, the sixth battery pack is controlled to supply power to the load, and a discharge parameter corresponding to the sixth battery pack is obtained.

[0113] According to some embodiments, the discharge condition refers to a condition used by the power supply system to determine that the sixth battery pack can be discharged. The discharge condition is not limited to a specific condition. For example, the discharge condition can be that the sixth battery pack is in a non-fault state.

[0114] In some embodiments, the discharge parameter refers to a parameter monitored by the power supply system when the sixth battery pack supplies power to the load. The discharge parameter includes but is not limited to discharge duration, discharge current size, discharge power, etc.

[0115] It is easy to understand that, Figure 8 is a flowchart of a sixth battery pack power supply according to an exemplary embodiment, as Figure 8As shown, when the power system controls the rectifier module to be in a non-working state, controls the first switch in the sixth battery pack to be closed, and controls the second switch in the seventh battery pack to be opened, if the power system judges that the sixth battery pack meets the discharge condition, the power system can control the sixth battery pack to supply power to the load, and obtain the discharge parameter corresponding to the sixth battery pack. At the same time, since the voltage output by the first battery pack and the third battery pack in the sixth battery pack is greater than the voltage output by the third battery pack in the seventh battery pack, the diode in the seventh battery pack cannot obtain a forward voltage and cannot be automatically turned on.

[0116] In step S13, the performance of the sixth battery pack is determined according to the discharge parameter.

[0117] For example, when the discharge parameter indicates that the discharge duration is lower than the normal duration threshold, it can be determined that the performance of the sixth battery pack is reduced. If the discharge parameter indicates that the discharge duration is lower than the normal duration threshold, and the difference between the discharge duration and the normal duration threshold is greater than the difference threshold, it can be determined that the sixth battery pack is an abnormal battery pack, and battery abnormal information is sent to process the abnormal battery pack.

[0118] As can be easily understood, when the discharge parameter corresponding to the sixth battery pack is obtained, the performance of the sixth battery pack can be determined according to the discharge parameter.

[0119] In summary, the method provided by the embodiments of the present disclosure can control the rectifier module to be in a non-working state, control the first switch in the sixth battery pack to be closed, and control the second switch in the seventh battery pack to be opened in response to the test instruction for the sixth battery pack. If the sixth battery pack meets the discharge condition, the sixth battery pack is controlled to supply power to the load, and the discharge parameter corresponding to the sixth battery pack is obtained. The performance of the sixth battery pack is determined according to the discharge parameter. Therefore, the function of discharging a single string battery to a load independently can be realized, the discharge intensity can be increased, the battery performance can be fully verified in battery maintenance testing, and abnormal batteries or battery packs can be found and processed in time. At the same time, by connecting a diode in parallel with the switch, the un-discharged battery pack connected with the battery switch cabinet can be kept in an online backup state. When the discharged battery pack fails, the un-discharged battery pack can be automatically put into use when the discharged battery pack fails, the redundancy of the power system during discharging can be improved, the situation that the power system stops supplying power to the load and causes adverse effects on the load can be reduced, and the safety and convenience of the power system during use can be improved.

[0120] Figure 9 is a flow chart of a second battery pack test method according to an exemplary embodiment, as Figure 9 shown, the battery pack test method is applied to Figures 2 to 6 any of the power systems shown, including the following steps:

[0121] In step S21, the control rectifier module is in working state, and the control switch in at least two groups of second battery groups is closed to control the rectifier module to charge at least two groups of second battery groups in the power supply system, and control the rectifier module to supply power to the load.

[0122] As can be easily understood, when the power supply system is running normally, the power supply system can control the rectifier module to be in working state, and control the switch in at least two groups of second battery groups to be closed to control the rectifier module to charge at least two groups of second battery groups in the power supply system, and control the rectifier module to supply power to the load, as shown in FIG. 4. Figure 10 As can be easily understood, when the power supply system is running normally, the power supply system can control the rectifier module to be in working state, and control the switch in at least two groups of second battery groups to be closed to control the rectifier module to charge at least two groups of second battery groups in the power supply system, and control the rectifier module to supply power to the load, as shown in FIG. 4. Figure 11

[0123] In step S22, in response to the test instruction for the sixth battery group, the control rectifier module is in non-working state, the control first switch in the sixth battery group is closed, and the control second switch in the seventh battery group is opened.

[0124] As can be easily understood, when the power supply system is running normally, the power supply system can control the rectifier module to be in working state, and control the switch in at least two groups of second battery groups to be closed to control the rectifier module to charge at least two groups of second battery groups in the power supply system, and control the rectifier module to supply power to the load, as shown in FIG. 4.

[0125] In step S23, if the sixth battery group does not meet the discharge condition, at least one second battery in the seventh battery group supplies power to the load through the diode in the seventh battery group.

[0126] As can be easily understood, when the power supply system is running normally, the power supply system can control the rectifier module to be in working state, and control the switch in at least two groups of second battery groups to be closed to control the rectifier module to charge at least two groups of second battery groups in the power supply system, and control the rectifier module to supply power to the load, as shown in FIG. 4. Figure 12

[0127] ​​In summary, the method provided by the embodiments of the present disclosure controls the rectifier module to be in a working state, controls the on-off switches in the at least two groups of second battery groups to be turned on, controls the rectifier module to charge the at least two groups of second battery groups in the power supply system, and controls the rectifier module to supply power to the load. In response to a test instruction for the sixth battery group, the rectifier module is controlled to be in a non-working state, the first on-off switch in the sixth battery group is controlled to be turned on, and the second on-off switch in the seventh battery group is controlled to be turned off. If the sixth battery group does not meet the discharge condition, at least one second battery in the seventh battery group supplies power to the load through the diode in the seventh battery group. Therefore, by connecting the diode in parallel with the switch, the un-discharged battery group connected with the battery switch cabinet can be kept in an online standby state, and when the discharged battery group fails, the un-discharged battery group can be automatically put into use when the discharged battery group fails, the redundancy of the power supply system during discharge can be improved, the situation that the power supply system stops supplying power to the load and causes adverse effects on the load can be reduced, and the safety and convenience of the power supply system during use can be improved.

[0128] Figure 13 FIG. 1 is a first battery group test device block diagram according to an exemplary embodiment. Referring to FIG. 1, Figure 13 The device 1300 includes a battery test unit 1301, a parameter acquisition unit 1302, and a performance determination unit 1303.

[0129] The battery test unit 1301 is configured to perform, in response to a test instruction for the sixth battery group, control the rectifier module to be in a non-working state, control the first on-off switch in the sixth battery group to be turned on, and control the second on-off switch in the seventh battery group to be turned off, wherein the sixth battery group is any one of the at least two groups of second battery groups, and the seventh battery group is a second battery group other than the sixth battery group in the at least two groups of second battery groups.

[0130] The parameter acquisition unit 1302 is configured to perform, if the sixth battery group meets the discharge condition, control the sixth battery group to supply power to the load, and obtain the discharge parameter corresponding to the sixth battery group.

[0131] The performance determination unit 1303 is configured to perform, according to the discharge parameter, determine the performance of the sixth battery group.

[0132] According to some embodiments, Figure 14 FIG. 2 is a second battery group test device block diagram according to an exemplary embodiment. Referring to FIG. 2, Figure 14 The battery group test device 1300 further includes a battery charging unit 1304 configured to perform, before the response to the test instruction for the sixth battery group, control the rectifier module to be in a non-working state, control the first on-off switch in the sixth battery group to be turned on, and control the second on-off switch in the seventh battery group to be turned off:

[0133] The battery charging unit 1304 is configured to control the rectifier module to be in the working state and control the switches in the at least two groups of second battery groups to be closed, so as to control the rectifier module to charge the at least two groups of second battery groups in the power supply system and control the rectifier module to supply power to the load.

[0134] According to some embodiments, Figure 15 is a third battery group test device block diagram according to an exemplary embodiment. Referring to Figure 15 The battery group test device 1300 further includes a battery power supply unit 1305 configured to perform, in response to a test instruction for the sixth battery group:

[0135] The battery power supply unit 1305 is configured to perform, if the sixth battery group does not meet the discharge condition, at least one second battery in the seventh battery group supplies power to the load through the diode in the seventh battery group.

[0136] As to the device in the above embodiments, the specific manner in which each module performs the operation has been described in detail in the embodiments related to the method, and will not be described in detail here.

[0137] In summary, the device provided by the embodiments of the present disclosure controls the rectifier module to be in the non-working state and controls the first switch in the sixth battery group to be closed and the second switch in the seventh battery group to be opened in response to a test instruction for the sixth battery group, wherein the sixth battery group is any one of the at least two groups of second battery groups, and the seventh battery group is a second battery group other than the sixth battery group among the at least two groups of second battery groups; the parameter acquisition unit controls the sixth battery group to supply power to the load if the sixth battery group meets the discharge condition, to obtain the discharge parameter corresponding to the sixth battery group; and the performance determination unit determines the performance of the sixth battery group according to the discharge parameter. Therefore, the function of single-string battery independent discharge to the load can be realized, the discharge intensity can be increased, the battery performance can be fully verified in battery maintenance testing, and abnormal batteries or battery groups can be found and handled in time. At the same time, by connecting the diode in parallel with the switch, the un-discharged battery group connected with the battery switch cabinet can be kept in an online backup state, the un-discharged battery group can be automatically put into use when the discharged battery group fails, the redundancy of the power supply system during discharge can be improved, the situation that the power supply system stops supplying power to the load to cause adverse effects on the load can be reduced, and the safety and convenience of the power supply system during use can be improved.

[0138] Figure 16 is a block diagram of a power supply system 1600 for battery group testing according to an exemplary embodiment.

[0139] Referring to Figure 16 The power system 1600 can include one or more of the following components: a processing component 1602, a memory 1604, a power component 1606, a multimedia component 1608, an audio component 1610, an input / output (I / O) interface 1612, a sensor component 1614, and a communication component 1616.

[0140] The processing component 1602 usually controls the overall operations of the power system 1600, such as operations associated with display, telephone calling, data communication, camera operation and recording operation. The processing component 1602 can include one or more processors 1620 to execute instructions to complete all or part of steps of the methods described above. In addition, the processing component 1602 can include one or more modules to facilitate the interaction between the processing component 1602 and other components. For example, the processing component 1602 can include a multimedia module to facilitate the interaction between the multimedia component 1608 and the processing component 1602.

[0141] The memory 1604 is configured to store various types of data to support operations of the power system 1600. Examples of these data include instructions for any application or method operating on the power system 1600, contact data, phonebook data, messages, pictures, videos, etc. The memory 1604 can be implemented by any type of volatile or non-volatile storage devices or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk or optical disk.

[0142] The power component 1606 provides power to various components of the power system 1600. The power component 1606 can include a power management system, one or more power supplies, and other components associated with generating, managing and distributing power for the power system 1600.

[0143] The multimedia component 1608 includes a screen providing an output interface between the power supply system 1600 and a user. In some embodiments, the screen can include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen can be implemented as a touch screen to receive input signals from a user. The touch panel includes one or more touch sensors to sense touch, slide and gestures on the touch panel. The touch sensor can not only sense a boundary of a touching or sliding action, but also detect duration and pressure related to the touching or sliding action. In some embodiments, the multimedia component 1608 includes a front camera and / or a rear camera. When the power supply system 1600 is in an operation mode, such as a shooting mode or a video mode, the front camera and / or the rear camera can receive external multimedia data. Each of the front and rear cameras can be a fixed optical lens system or have a focal length and optical zoom capability.

[0144] The audio component 1610 is configured to output and / or input audio signals. For example, the audio component 1610 includes a microphone (MIC) that is configured to receive external audio signals when the power supply system 1600 is in an operation mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals can be further stored in the memory 1604 or transmitted via the communication component 1616. In some embodiments, the audio component 1610 also includes a speaker for outputting audio signals.

[0145] The I / O interface 1612 provides an interface between the processing component 1602 and peripheral interface modules, which can be a keyboard, a click wheel, a button, and the like. The buttons can include, but are not limited to, a home button, a volume button, a start button, and a lock button.

[0146] The sensor component 1614 includes one or more sensors to provide status assessments of various aspects of the power system 1600. For example, the sensor component 1614 can detect an on / off status of the power system 1600, relative positioning of components, such as a display and keypad of the power system 1600, a change in position of the power system 1600 or a component of the power system 1600, the presence or absence of user contact with the power system 1600, orientation or acceleration / deceleration of the power system 1600, and a change in temperature of the power system 1600. The sensor component 1614 can include a proximity sensor configured to detect the presence of a nearby object without any physical contact. The sensor component 1614 can also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor component 1614 can also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0147] The communication component 1616 is configured to facilitate wired or wireless communication between the power system 1600 and other devices. The power system 1600 can access wireless networks based on communication standards, such as WiFi, operator networks (e.g., 2G, 3G, 4G, or 5G), or a combination thereof. In an example embodiment, the communication component 1616 receives broadcast signals or broadcast-related information from an external broadcast management system via a broadcast channel. In an example embodiment, the communication component 1616 also includes a Near Field Communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on Radio Frequency Identification (RFID) technology, Infrared Data Association (IrDA) technology, Ultra-WideBand (UWB) technology, Bluetooth (BT) technology, and other technologies.

[0148] In example embodiments, the power system 1600 can be implemented with one or more Application-Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic elements to perform the above-described methods.

[0149] In example embodiments, a non-transitory computer-readable storage medium including instructions, such as the memory 1604 including instructions, is also provided, which can be executed by the processor 1620 of the power system 1600 to complete the above-described methods. For example, the non-transitory computer-readable storage medium can be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disc, and an optical data storage device, etc.

[0150] Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the features disclosed herein. It is intended that the disclosure be construed as including any paterns of this disclosure that can be derived from the description and illustrations presented herein without departing from the scope and spirit of the disclosure. The specification and examples given are considered exemplary only, and the true scope and spirit of the disclosure are indicated by the following claims.

[0151] It is to be understood that the disclosure is not limited to the precise construction described above and shown in the attached drawings, and that various modifications and changes can be made without departing from the scope thereof. The scope of the disclosure is limited only by the claims that follow.

Claims

1. A battery pack testing method, characterized in that, An application is made in a power supply system, the power supply system comprising: a rectifier module and at least two sets of second battery packs, the second battery packs comprising a battery switch cabinet and at least one second battery; wherein, the battery switch cabinet comprises a switch, a diode, and a first battery pack, the connection terminal of the negative terminal of the first battery pack and the positive terminal of the diode is the negative terminal of the battery switch cabinet, the positive terminal of the first battery pack is connected to a first terminal of the switch, and the connection terminal of the second terminal of the switch and the negative terminal of the diode is the positive terminal of the battery switch cabinet; the first battery pack comprises at least two first batteries, the at least two first batteries being connected in series; the battery switch cabinet and the at least one second battery are connected in series; the AC terminal of the rectifier module is the input terminal of the power supply system, the connection terminal of the DC positive terminal of the rectifier module and the positive terminals of the at least two sets of second battery packs is the DC positive output terminal of the power supply system, and the connection terminal of the DC negative terminal of the rectifier module and the negative terminals of the at least two sets of second battery packs is the DC negative output terminal of the power supply system; the method includes: In response to a test command for the sixth battery pack, the rectifier module is controlled to be in a non-operating state, the first switch in the sixth battery pack is controlled to be closed, and the second switch in the seventh battery pack is controlled to be open. The sixth battery pack is any one of at least two second battery packs, and the seventh battery pack is a second battery pack other than the sixth battery pack among the at least two second battery packs. If the sixth battery pack meets the discharge conditions, then the sixth battery pack is controlled to supply power to the load, and the discharge parameters corresponding to the sixth battery pack are obtained. The performance of the sixth battery pack is determined based on the discharge parameters.

2. The method according to claim 1, characterized in that, Before responding to the test command for the sixth battery pack, controlling the rectifier module to be in a non-operating state, controlling the first switch in the sixth battery pack to be closed, and controlling the second switch in the seventh battery pack to be opened, the method further includes: The rectifier module is controlled to be in working state, and the switches in at least two sets of second battery packs are controlled to be closed, so as to control the rectifier module to charge at least two sets of second battery packs in the power system and to control the rectifier module to supply power to the load.

3. The method according to claim 1, characterized in that, After responding to the test command for the sixth battery pack, controlling the rectifier module to be in a non-operating state, controlling the first switch in the sixth battery pack to be closed, and controlling the second switch in the seventh battery pack to be opened, the method further includes: If the sixth battery pack does not meet the discharge conditions, at least one second battery in the seventh battery pack supplies power to the load through a diode in the seventh battery pack.

4. A battery pack testing device, characterized in that, The battery pack testing device is applied to a power system, which includes: a rectifier module and at least two sets of second battery packs. Each second battery pack includes a battery switch cabinet and at least one second battery. The battery switch cabinet includes a switch, a diode, and a first battery pack. The connection between the negative terminal of the first battery pack and the positive terminal of the diode is the negative terminal of the battery switch cabinet. The positive terminal of the first battery pack is connected to a first terminal of the switch, and the connection between the second terminal of the switch and the negative terminal of the diode is the positive terminal of the battery switch cabinet. The first battery pack includes at least two first batteries connected in series. The battery switch cabinet and the at least one second battery are connected in series. The AC terminal of the rectifier module is the input terminal of the power system. The connection between the DC positive terminal of the rectifier module and the positive terminals of the at least two sets of second battery packs is the DC positive output terminal of the power system, and the connection between the DC negative terminal of the rectifier module and the negative terminals of the at least two sets of second battery packs is the DC negative output terminal of the power system. The battery pack testing device includes: The battery testing unit is configured to execute a test command in response to the sixth battery pack, control the rectifier module to be in a non-operating state, control the first switch in the sixth battery pack to be closed, and control the second switch in the seventh battery pack to be open, wherein the sixth battery pack is any one of at least two second battery packs, and the seventh battery pack is a second battery pack other than the sixth battery pack among the at least two second battery packs. The parameter acquisition unit is configured to control the sixth battery pack to supply power to the load if the sixth battery pack meets the discharge conditions, thereby obtaining the discharge parameters corresponding to the sixth battery pack. The performance determination unit is configured to determine the performance of the sixth battery pack based on the discharge parameters.

5. A power supply system, characterized in that, include: processor; Memory used to store the processor's executable instructions; The processor is configured to execute the instructions to implement the battery pack testing method as described in any one of claims 1 to 3.

6. A storage medium, wherein instructions in the storage medium, when executed by a processor of an electronic device, enable the electronic device to perform the battery pack testing method as described in any one of claims 1 to 3.

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