Charging test system and method for power management module of intelligent robot

Abstract

The invention relates to an intelligent robot power management module charging test system and method, and the system comprises a programmable DC power supply which is used for simulating the charging voltage of a battery; the programmable electronic load is used for simulating the charging current of the battery; the computer is used for importing a voltage parameter of battery charging into the programmable direct current power supply and importing a current parameter of battery charging into the programmable electronic load when the power management module is tested and the charger is not connected to the power management module; after the power management module is connected to the charger, the voltage output by the programmable direct-current power supply is controlled to be gradually increased along with time, and the input current of the programmable electronic load is controlled to be gradually reduced until simulation charging is completed. The problems of discharging after the battery test and the service life of the battery pack do not need to be considered, the test consistency, safety and efficiency are high, the whole process is automatic, the workload of personnel is reduced, and the difficulty of the charging test is greatly reduced.

Description

Technical Field

[0001] The present application relates to the field of robotics technology, and in particular to a charging test system and method for a power management module of an intelligent robot. Background Art

[0002] At present, the main energy source of mobile intelligent robots is power batteries. Power batteries can be divided into lithium batteries and lead-acid batteries according to their materials. Usually, lithium batteries have a protection board inside to monitor the status of the battery cells, while lead-acid batteries require an external metering board to achieve this. In order to increase compatibility with different batteries and improve the safety and reliability of the robot, additional power management modules are usually added.

[0003] The main functions of the power management module are to control the energy distribution of the whole machine, monitor the battery status, monitor the electrical status of each circuit, and act as an additional insurance in case of electrical failure. Therefore, it needs to pass a higher reliability verification, and the discharge-related tests are easier to implement, and the test equipment is directly used as the input source.

[0004] However, the implementation of the charging test is poor. Ordinary DC power supplies cannot directly absorb the charging current. A special battery simulation system must be used or the battery must be used directly as the input source, which makes the test difficult. The battery needs to be charged and discharged in advance according to demand before use. If the test is terminated or ended, it needs to be charged and discharged again, which affects the efficiency of the experiment. If different batteries are used, consistency cannot be guaranteed. Batteries have a limited service life, and there is capacity decay after a certain number of cycles. Frequent testing will aggravate battery loss, and lithium batteries also have the risk of thermal runaway, which is difficult to extinguish after runaway. The battery simulation system has a high cost, a single application scenario, and poor scalability. Summary of the invention

[0005] In view of the above problems, the present application provides a charging test system and method for the power management module of an intelligent robot to solve the problem that the charging test of the power management module of the existing intelligent robot is poorly implementable, the ordinary DC power supply cannot directly absorb the charging current, and a special battery simulation system must be used or the battery must be directly used as the input source, which makes the test difficult.

[0006] To achieve the above purpose, the inventor provides a charging test system for a power management module of an intelligent robot, comprising:

[0007] A programmable DC power supply, wherein the programmable DC power supply is used to simulate a charging voltage of a battery;

[0008] A programmable electronic load, wherein a power supply terminal of the programmable electronic load is connected to a power supply terminal of the programmable DC power supply, and the programmable electronic load is used to simulate a charging current of a battery;

[0009] A computer is connected to a programmable DC power supply and a programmable electronic load. The computer is used to import the voltage parameters of battery charging into the programmable DC power supply and the current parameters of battery charging into the programmable electronic load when the power management module is not connected to the charger when testing the power management module; when the power management module is connected to the charger, the voltage output by the programmable DC power supply is controlled to increase gradually over time, and the input current of the programmable electronic load is controlled to decrease gradually until the simulated charging is completed.

[0010] In some embodiments, it also includes:

[0011] A power meter is used to obtain voltage parameters and current parameters when the battery pack is charging.

[0012] In some embodiments, the power meter is used to record the voltage data and current data during the charging process multiple times to obtain the voltage parameters and current parameters of the battery under charging.

[0013] In some embodiments, the voltage parameter is half of the sum of the charger output voltage and the current voltage of the battery pack.

[0014] In some embodiments, it also includes:

[0015] A high-power diode is arranged at the positive electrode of the power supply end of the programmable DC power supply.

[0016] Another technical solution is also provided, a charging test method for a power management module of an intelligent robot, which is applied to the charging test system for the power management module of an intelligent robot as described above, and the method comprises the following steps:

[0017] Connect the power management unit to be tested to a programmable DC power supply, output power, and start the power management unit to be tested;

[0018] Import voltage parameters into a programmable DC power supply and current parameters into a programmable electronic load;

[0019] The power management unit to be tested is connected to the charger. The voltage output by the programmable power supply gradually increases over time, and the input current of the programmable electronic load gradually decreases until the simulated charging is completed.

[0020] In some embodiments, the following steps are also included:

[0021] The voltage and current parameters during battery charging are obtained through a power meter.

[0022] In some embodiments, obtaining the voltage parameters and current parameters of the battery during charging by using a power meter specifically includes the following steps:

[0023] The power meter records the voltage data and current data during the charging process multiple times to obtain the voltage parameters and current parameters of the battery under charging.

[0024] In some embodiments, the voltage parameter is half of the sum of the charger output voltage and the current voltage of the battery pack.

[0025] In some embodiments, the following steps are also included:

[0026] When the high-power diode at the positive electrode of the power supply terminal of the programmable DC power supply is used to prevent the current from flowing back, the voltage parameter of the programmable DC power supply is compensated.

[0027] Different from the prior art, the above technical scheme, when the power management module of the intelligent robot is charged and tested, the power management module to be tested is connected to a programmable DC power supply. When the power management module is not connected to the charger, the computer imports the voltage parameters of the battery charging into the programmable DC power supply, and imports the current parameters of the battery charging into the programmable electronic load. Then the power management module is connected to the charger, and the voltage output by the programmable DC power supply is controlled to gradually increase over time, and the input current of the programmable electronic load is controlled to gradually decrease until the simulated charging of the power management module of the intelligent robot is completed, thereby realizing the charging test of the power management module of the intelligent robot. The programmable DC power supply and the programmable electronic load are used to simulate the battery voltage and charging current respectively to replace the battery pack. There is no need to consider the discharge of the battery after the test and the life of the battery pack. The test has high consistency, safety and efficiency, and is fully automated, which reduces the workload of personnel and greatly reduces the difficulty of the charging test.

[0028] The above-mentioned records related to the invention content are only an overview of the technical solution of the present application. In order to enable ordinary technicians in the field to more clearly understand the technical solution of the present application, and then implement it according to the text of the specification and the contents recorded in the drawings, and to make the above-mentioned purpose and other purposes, features and advantages of the present application easier to understand, the following is an explanation in combination with the specific implementation mode and drawings of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The drawings are only used to illustrate the principles, implementation methods, applications, characteristics and effects of the specific embodiments of the present application and other related contents, and shall not be considered as limitations of the present application.

[0030] In the drawings of the specification:

[0031] Figure 1 A structural schematic diagram of a charging test system for a power management module of an intelligent robot described in a specific implementation manner;

[0032] Figure 2 It is a schematic diagram of connecting a power meter to a battery pack according to a specific implementation method;

[0033] Figure 3 Another structural schematic diagram of the intelligent robot power management module charging test system described in the specific implementation method;

[0034] Figure 4 A schematic diagram of the current flow direction of the intelligent robot power management module charging test system when the charger is not connected to the specific implementation method;

[0035] Figure 5 A schematic diagram of the current flow when the intelligent robot power management module charging test system described in the specific implementation method is connected to a charger;

[0036] Figure 6 Schematic diagram of the operation process of the intelligent robot power management module charging test system described in the specific implementation method

[0037] Figure 7 A schematic diagram of a flow chart of a charging test of a power management module of an intelligent robot according to a specific implementation method.

[0038] The reference numerals in the above drawings are described as follows:

[0039] 110. Programmable DC power supply,

[0040] 120. Programmable electronic load,

[0041] 130. Computer,

[0042] 140. Power meter,

[0043] 150. High power diode,

[0044] 200. Power management module. DETAILED DESCRIPTION

[0045] In order to explain in detail the possible application scenarios, technical principles, specific schemes that can be implemented, and the purposes and effects that can be achieved, the following is a detailed description of the specific embodiments listed in conjunction with the accompanying drawings. The embodiments described herein are only used to more clearly illustrate the technical solutions of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0046] Reference to "embodiment" herein means that the specific features, structures or characteristics described in conjunction with the embodiment may be included in at least one embodiment of the present application. The term "embodiment" appearing in various places in the specification does not necessarily refer to the same embodiment, nor does it particularly limit its independence or association with other embodiments. In principle, in the present application, as long as there is no technical contradiction or conflict, the various technical features mentioned in the embodiments can be combined in any way to form a corresponding implementable technical solution.

[0047] Unless otherwise defined, the technical terms used in this document have the same meanings as those generally understood by those skilled in the art to which this application belongs; the use of relevant terms in this document is only for describing specific embodiments and is not intended to limit this application.

[0048] In the description of this application, the term "and / or" is an expression used to describe the logical relationship between objects, indicating that three relationships may exist, for example, A and / or B, which means: A exists, B exists, and A and B exist at the same time. In addition, the character " / " in this article generally indicates that the objects before and after are in an "or" logical relationship.

[0049] In the present application, terms such as “first” and “second” are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship of quantity, priority or sequence between these entities or operations.

[0050] Without further limitations, in this application, the words "include", "comprises", "has" or other similar expressions used in the sentences are intended to cover non-exclusive inclusion. These expressions do not exclude the presence of additional elements in the process, method or product including the elements, so that the process, method or product including a series of elements may include not only those limited elements, but also other elements not explicitly listed, or also include elements inherent to such process, method or product.

[0051] Similar to the understanding in the Examination Guidelines, in this application, expressions such as "greater than", "less than", "exceed" and the like are understood to exclude the number itself; expressions such as "above", "below", "within" and the like are understood to include the number itself. In addition, in the description of the embodiments of this application, "multiple" means more than two (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups", "multiple times", etc., unless otherwise clearly and specifically limited.

[0052] In the description of the embodiments of the present application, space-related expressions used, such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "vertical", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or position relationship based on the orientation or position relationship shown in the specific embodiments or drawings, and are only for the convenience of describing the specific embodiments of the present application or facilitating the reader's understanding, and do not indicate or imply that the referred device or component must have a specific position, a specific orientation, or be constructed or operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0053] Unless otherwise expressly specified or limited, in the description of the embodiments of the present application, the terms such as "install", "connect", "connect", "fix", "set", etc. used should be understood in a broad sense. For example, the "connection" can be a fixed connection, a detachable connection, or an integrated setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For technicians in the technical field to which the present application belongs, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0054] See also Figure 1 , this embodiment provides a charging test system for an intelligent robot power management module, including:

[0055] A programmable DC power supply 110, wherein the programmable DC power supply 110 is used to simulate a charging voltage of a battery;

[0056] A programmable electronic load 120, wherein a power supply terminal of the programmable electronic load 120 is connected to a power supply terminal of the programmable DC power supply 110, and the programmable electronic load 120 is used to simulate a charging current of a battery;

[0057] A computer 130, wherein the computer 130 is connected to the programmable DC power supply 110 and the programmable electronic load 120. The computer 130 is used to import the voltage parameters of battery charging into the programmable DC power supply 110 and the current parameters of battery charging into the programmable electronic load 120 when the power management module 200 is not connected to the charger when testing the power management module 200; when the power management module 200 is connected to the charger, the voltage output by the programmable DC power supply 110 is controlled to increase gradually over time, and the input current of the programmable electronic load 120 is controlled to decrease gradually until the simulated charging is completed.

[0058] When the power management module 200 of the intelligent robot is charged and tested, the power management module 200 to be tested is connected to the programmable DC power supply 110. When the power management module 200 is not connected to the charger, the computer 130 imports the voltage parameters of the battery charging into the programmable DC power supply 110, and imports the current parameters of the battery charging into the programmable electronic load 120. Then the power management module 200 is connected to the charger, and the voltage output by the programmable DC power supply 110 is controlled to gradually increase over time, and the input current of the programmable electronic load 120 is controlled to gradually decrease until the simulated charging of the power management module 200 of the intelligent robot is completed. The charging test of the power management module 200 of the intelligent robot is realized. The programmable DC power supply 110 and the programmable electronic load 120 are used to simulate the battery voltage and charging current respectively to replace the battery pack. There is no need to consider the discharge of the battery after the test and the life of the battery pack. The test has high consistency, safety and efficiency, and is fully automated, which reduces the workload of personnel and greatly reduces the difficulty of the charging test.

[0059] In some embodiments, it also includes:

[0060] The power meter 140 is used to obtain voltage parameters and current parameters when the battery pack is charged.

[0061] In order to accurately obtain the voltage and current parameters of the power battery pack during the charging process, before the experiment, the battery pack is first discharged to the low power threshold, and then Figure 2 The schematic diagram of the power meter 140 connected to the battery pack is shown. The battery pack, the charger and the power meter 140 are connected. The charger is connected to the mains and starts to charge the battery pack. Until the battery is charged, the power meter 140 records the voltage parameters and current parameters of the battery during charging. After the power meter 140 records the voltage parameters and current parameters of the battery pack during charging, it sends them to the computer 130. In order to further obtain more accurate voltage parameters and current parameters of the battery pack during charging, the power meter 140 is used to record the voltage data and current data during the charging process for multiple times to obtain the voltage parameters and current parameters of the battery during charging. The power meter 140 repeatedly measures the current data and voltage parameters of the battery pack during charging, such as 3-5 times, and integrates the multiple measurement data to obtain the voltage parameters and current parameters of the battery pack during charging.

[0062] In some embodiments, the voltage parameter is half of the sum of the charger output voltage and the current voltage of the battery pack.

[0063] The power meter 140 measures a voltage value: Umea = (Ubat + Ucha) / 2. Without considering line loss, the measured value is half of the sum of the charger output voltage and the current battery voltage. From this, the change in battery voltage during the charging process can be calculated, and the current is the actual charging current.

[0064] In some embodiments, it also includes:

[0065] The high power diode 150 is arranged at the positive electrode of the power supply end of the programmable DC power supply 110 .

[0066] like Figure 3 As shown, before the experiment, the programmable DC power supply 110 and the programmable electronic load 120 are connected to the computer 130 through the communication line, and the positive and negative leads are connected to the power management module 200 to be tested. In order to consider that the programmable DC power supply 110 cannot tolerate reverse voltage, a high-power diode 150 needs to be connected in series at its positive electrode to prevent damage caused by backflow of current. Since the diode has a forward voltage drop, the voltage parameters need to be compensated. If the programmable DC power supply 110 supports reverse voltage, it is not necessary to connect the high-power diode 150 in series. When reverse current is generated, it is necessary to input current into the programmable electronic load 120 for compensation.

[0067] During the experiment, the programmable DC power supply 110 and the programmable electronic load 120 simulate the voltage and charging current of the battery pack respectively. Under the premise that the power management module 200 is not connected to the charger and the current input of the programmable electronic load 120 is turned on, the current flow direction of the system when the charger is not connected is as follows: Figure 4 When the charger is connected, since the charger voltage is greater than the voltage of the programmable DC power supply 110, a potential difference is formed between the two. When the computer 130 runs the programming program, the current input of the programmable electronic load 120 is turned on, and the current flow direction of the system changes. The current flow direction when the system is connected to the charger is as shown in FIG. Figure 5 As shown, at this time, the power management module 200 enters the charging mode.

[0068] like Figure 6The operation flow shown is as follows: connect the power management module 200 to the programmable DC power supply 110, turn on the power output, turn on the power management module 200, and check the working condition of the equipment; turn on the programmable electronic load 120, use the programming software in the computer 130 to connect the programmable DC power supply 110 and the programmable electronic load 120, import the voltage parameters into the programmable DC power supply 110, and import the current parameters into the programmable electronic load 120; connect the power management module 200 to the charger, and the computer 130 runs the programming program. The output voltage of the programmable DC power supply 110 gradually increases over time according to the program, and the input current of the programmable electronic load 120 gradually decreases according to the program. The programming program ends and the simulated charging is completed.

[0069] The use of this system for testing can completely replace the battery pack, and there is no need to consider the discharge of the battery pack after the test and the life of the battery pack. The test consistency, safety and efficiency are high, and the whole process is automated, which reduces the workload of personnel. At the same time, this system has strong compatibility. Batteries of different materials and voltages can be simulated after completing the preliminary parameter collection. At the same time, this system has low cost and strong scalability. Each device can be used independently and can be disassembled for other tests on a daily basis. It is temporarily built during the test and the wiring is simple. If there is a large current demand, the current can be increased by simply connecting the programmable electronic load 120 in parallel.

[0070] See also Figure 7 In another embodiment, a charging test method for a power management module of an intelligent robot is applied to a charging test system for a power management module of an intelligent robot as in the above embodiment, and the method comprises the following steps:

[0071] Step S710: connecting the power management unit to be tested to a programmable DC power supply, outputting power, and turning on the power management unit to be tested;

[0072] Step S720: importing voltage parameters into a programmable DC power supply, and importing current parameters into a programmable electronic load;

[0073] Step S730: Connect the power management unit to be tested to the charger, the voltage output by the programmable power supply gradually increases over time, and the input current of the programmable electronic load gradually decreases until the simulated charging is completed.

[0074] When the power management module of the intelligent robot is charged and tested, the power management module to be tested is connected to a programmable DC power supply. When the power management module is not connected to the charger, the computer imports the voltage parameters of the battery charging into the programmable DC power supply, and imports the current parameters of the battery charging into the programmable electronic load. Then the power management module is connected to the charger, and the voltage output by the programmable DC power supply is controlled to increase gradually over time, and the input current of the programmable electronic load is controlled to decrease gradually, until the simulated charging of the power management module of the intelligent robot is completed, thereby realizing the charging test of the power management module of the intelligent robot. The programmable DC power supply and the programmable electronic load are used to simulate the battery voltage and the charging current respectively to replace the battery pack. There is no need to consider the discharge of the battery after the test and the life of the battery pack. The test has high consistency, safety and efficiency, and is fully automated, which reduces the workload of personnel and greatly reduces the difficulty of the charging test.

[0075] In some embodiments, the following steps are also included:

[0076] The voltage and current parameters during battery charging are obtained through a power meter.

[0077] In order to accurately obtain the voltage parameters and current parameters of the power battery pack during the charging process, before the experiment, the battery pack is first discharged to a low electrical threshold, and then the battery pack, charger and power meter are connected according to the schematic diagram of the power meter connecting the battery pack shown in the figure. The charger is connected to the mains and starts charging the battery pack until the battery is charged. The power meter records the voltage parameters and current parameters during the battery charging process. After the power meter records the voltage parameters and current parameters during the battery pack charging process, it sends them to the computer. Among them, in order to further obtain more accurate voltage parameters and current parameters during the battery pack charging process, the voltage parameters and current parameters obtained during the battery charging process by the power meter specifically include the following steps:

[0078] The power meter records the voltage data and current data during the charging process multiple times to obtain the voltage parameters and current parameters of the battery under charging.

[0079] The power meter repeatedly measures the current data and voltage parameters of the battery pack during charging, such as 3-5 times, and integrates the multiple measurement data to obtain the voltage parameters and current parameters of the battery pack during charging.

[0080] In some embodiments, the voltage parameter is half of the sum of the charger output voltage and the current voltage of the battery pack.

[0081] The power meter measures the voltage value: Umea = (Ubat + Ucha) / 2. Without considering line loss, the measured value is half of the sum of the charger output voltage Ucha and the battery's current voltage Ubat. From this, the change in battery voltage during the charging process can be calculated, and the current is the actual charging current.

[0082] In some embodiments, the following steps are also included:

[0083] When the current backflow is prevented by the high-power diode at the positive electrode of the power supply end of the programmable direct current power supply, the voltage parameter of the programmable direct current power supply is compensated.

[0084] Before the experiment, the programmable DC power supply and programmable electronic load are connected to the computer through the communication line, and the positive and negative leads are connected to the power management module to be tested. In order to consider that the programmable DC power supply cannot tolerate reverse voltage, a high-power diode needs to be connected in series at its positive pole to prevent damage caused by backflow of current. Since the diode has a forward voltage drop, the voltage parameters need to be compensated. If the programmable DC power supply supports reverse voltage, there is no need to connect a high-power diode in series. When reverse current is generated, the input current of the programmable electronic load needs to be compensated.

[0085] Finally, it should be noted that although the above embodiments have been described in the specification and drawings of this application, this does not limit the scope of patent protection of this application. All technical solutions generated by replacing or modifying equivalent structures or equivalent processes based on the essential concept of this application using the contents recorded in the specification and drawings of this application, as well as directly or indirectly implementing the technical solutions of the above embodiments in other related technical fields, are included in the scope of patent protection of this application.

Claims

1. An intelligent robot power management module charging test system, characterized in that: include: A programmable DC power supply, wherein the programmable DC power supply is used to simulate a charging voltage of a battery; A programmable electronic load, wherein a power supply terminal of the programmable electronic load is connected to a power supply terminal of the programmable DC power supply, and the programmable electronic load is used to simulate a charging current of a battery; A computer is connected to a programmable DC power supply and a programmable electronic load. The computer is used to import the voltage parameters of battery charging into the programmable DC power supply and the current parameters of battery charging into the programmable electronic load when the power management module is not connected to the charger when testing the power management module; when the power management module is connected to the charger, the voltage output by the programmable DC power supply is controlled to increase gradually over time, and the input current of the programmable electronic load is controlled to decrease gradually until the simulated charging is completed.

2. The intelligent robot power management module charging test system according to claim 1, characterized in that: Also includes: A power meter is used to obtain voltage parameters and current parameters when the battery pack is charging.

3. The intelligent robot power management module charging test system according to claim 2, characterized in that: The power meter is used to record the voltage data and current data during the charging process for multiple times to obtain the voltage parameters and current parameters of the battery under charging.

4. The intelligent robot power management module charging test system according to claim 2, characterized in that: The voltage parameter is half of the sum of the charger output voltage and the current voltage of the battery pack.

5. The intelligent robot power management module charging test system according to claim 1, characterized in that: Also includes: A high-power diode is arranged at the positive electrode of the power supply end of the programmable DC power supply.

6. A charging test method for a power management module of an intelligent robot, applied to the charging test system for a power management module of an intelligent robot as claimed in claim 1, characterized in that: The method comprises the following steps: Connect the power management unit to be tested to a programmable DC power supply, output power, and start the power management unit to be tested; Import voltage parameters into a programmable DC power supply and current parameters into a programmable electronic load; The power management unit to be tested is connected to the charger. The voltage output by the programmable power supply gradually increases over time, and the input current of the programmable electronic load gradually decreases until the simulated charging is completed.

7. The intelligent robot power management module charging test method according to claim 6, characterized in that: The following steps are also included: The voltage and current parameters during battery charging are obtained through a power meter.

8. The intelligent robot power management module charging test method according to claim 7, characterized in that: The method of obtaining the voltage parameters and current parameters of the battery during charging by means of a power meter specifically comprises the following steps: The power meter records the voltage data and current data during the charging process multiple times to obtain the voltage parameters and current parameters of the battery under charging.

9. The intelligent robot power management module charging test method according to claim 7, characterized in that: The voltage parameter is half of the sum of the charger output voltage and the current voltage of the battery pack.

10. The intelligent robot power management module charging test method according to claim 7, characterized in that: The following steps are also included: When the current backflow is prevented by the high-power diode at the positive electrode of the power supply end of the programmable direct current power supply, the voltage parameter of the programmable direct current power supply is compensated.

Images