Automatic grouping method for power battery used in electric vehicle

Abstract

An automatic grouping method for a power battery used in an electric vehicle, comprising the following steps: step 1, battery data collection; step 2, data storage and aggregation; step 3, battery information grouping: a computer groups batteries on the basis of a grouping condition and labels a termination voltage, discharge time, grouping information, and a date of each battery, and a battery meeting a screening condition is directly excluded; step 4, barcode printing and attachment; and step 5, battery screening and grouping. The batteries sequentially pass through a testing device to obtain the battery information; and the computer groups the batteries on the basis of the grouping condition, and divides the batteries into a plurality of large groups on the basis of the termination voltage data, and batteries in the same large group are divided into a plurality of small groups on the basis of the discharge time. By means of automatically grouping and attaching labels to the batteries by a machine device, the difficulty in battery grouping can be reduced, and the working efficiency of battery grouping is improved, thereby improving the battery production efficiency.

Description

Automatic matching method of power battery for electric vehicle

[0001] Related applications

[0002] The present application claims priority from the Chinese patent application No. 202410449597.1 filed on April 15, 2024 and entitled "Automatic matching method of power battery for electric vehicle". TECHNICAL FIELD

[0003] The present application belongs to the technical field of batteries, and particularly relates to an automatic matching method of power battery for electric vehicle. BACKGROUND

[0004] With the continuous development of the new energy industry, batteries, as a safe, energy-saving and environmentally friendly product, are widely used in electric vehicles, electric mopeds, electric road vehicles, hybrid electric vehicles, sightseeing vehicles, electric patrol vehicles, electric flatbed vehicles, municipal engineering vehicles, property maintenance vehicles, electric buses and other fields. In order to make the power battery have a high voltage and current, the batteries are usually first connected in series according to a certain order to form a series battery, and then multiple series batteries are connected in parallel to form the required power battery.

[0005] The consistency of each battery in the power battery is the key to improving the service life of the assembled battery. When the discharge time and termination voltage of a certain battery in the power battery are lower than those of other batteries, the service life of the entire battery will be greatly shortened. Therefore, before assembling the power battery, the batteries need to be detected. Due to the complexity of the matching requirements of the power battery, the difficulty and workload of manual matching are large, which makes the matching work efficiency low and affects the production efficiency of the power battery.

[0006] SUMMARY

[0007] The present application proposes the following technical solutions to solve the problem of low matching work efficiency caused by the large difficulty and workload of manual matching of power batteries in the prior art.

[0008] An automatic matching method of power battery for electric vehicle, comprising the following steps:

[0009] Step one, battery data acquisition;

[0010] The main belt conveyor transmits multiple batteries in turn through the detection equipment, and the detection equipment contacts the positive and negative electrodes of the batteries to obtain battery information;

[0011] Step two, data storage and summary;

[0012] The detection equipment transmits the battery information data to the connected computer, and the computer stores the battery information in a designated data table;

[0013] Step three, battery information grouping;

[0014] The computer sorts the batteries by the sorting condition, and labels the end voltage, discharge time, grouping information and date of the batteries, and the batteries within the screening condition are directly rejected;

[0015] Step four, printing the bar code and attaching;

[0016] The computer prints the label information on the label by the bar code printing device connected with the computer, and the label attaching device connected with the computer attaches the label on the corresponding battery;

[0017] Step five, battery screening and grouping;

[0018] The mechanical arm connected with the computer places the battery on the corresponding sub-belt conveyor according to the label information, and the batteries in the same group are processed and assembled into a complete power battery.

[0019] As a preferred embodiment of the above technical solution, the sorting condition in step three is that the end voltage data starting value is set, and the batteries are sequentially divided into N large groups by a specific end voltage data interval, the discharge time data starting value is set in the same large group, and the batteries are sequentially divided into N small groups by a specific discharge time data interval, the computer divides the batteries into the corresponding small groups of the corresponding large groups according to the end voltage and discharge time, and N is a natural number greater than 1.

[0020] As a preferred embodiment of the above technical solution, the sorting condition in step three is that the end voltage data starting value is set, and the batteries are sequentially divided into N large groups by a specific end voltage data interval, the discharge time data starting value is set in the same large group, and the batteries are sequentially divided into M small groups by a specific discharge time data interval, the computer divides the batteries into the corresponding small groups of the corresponding large groups according to the end voltage and discharge time, and N and M are natural numbers greater than 1, and N and M are different.

[0021] As a preferred embodiment of the above technical solution, the screening condition in step three is that the end voltage data of the battery is lower than the end voltage data starting value, or the discharge time of the battery is lower than the discharge time data starting value.

[0022] As a preferred embodiment of the above technical solution, the label attaching device comprises a power assembly, a connecting assembly and a suction head, the connecting assembly is used to connect the power assembly and the suction head, the connecting assembly comprises a mounting shell and a telescopic rod, one end of the telescopic rod is movably inserted into the mounting shell in the vertical direction, and a return spring is fixedly connected between the telescopic rod and the mounting shell, the power assembly drives the suction head to take the label from the label paper through the connecting assembly, and the suction head attaches the label to the surface of the battery to push the telescopic rod upward.

[0023] As the preferred technical scheme of the above, the first end of the telescopic rod is located inside the mounting shell, the second end of the telescopic rod is located outside the mounting shell, the first end is connected with the return spring, and the second end is connected with the adsorption head.

[0024] As the preferred technical scheme of the above, the connecting assembly further comprises a smoothing component, the smoothing component comprises a connecting part and two smoothing rollers, and the connecting part moves the two smoothing rollers towards or reversely by reciprocating movement of the telescopic rod in the vertical direction.

[0025] As the preferred technical scheme of the above, the two smoothing rollers are respectively located on both sides of the telescopic rod.

[0026] As the preferred technical scheme of the above, the connecting part comprises a driving gear, the surface of the telescopic rod is provided with a tooth surface matched with the driving gear, coaxial first bevel gears are arranged at both ends of the driving gear, a second bevel gear is meshingly connected on one side of the first bevel gear, a driven gear is coaxially arranged at one end of the second bevel gear, a straight rack is meshingly connected on one side of the driven gear, and a mounting frame is fixedly connected at one end of the straight rack.

[0027] As the preferred technical scheme of the above, the connecting part is symmetrically arranged relative to the middle part of the telescopic rod, and the telescopic rod is not meshed with the driving gear when located at the bottommost position.

[0028] As the preferred technical scheme of the above, one end of the smoothing roller is rotatably inserted into the inside of the mounting frame, and the smoothing roller is rolling matched with the surface of the battery.

[0029] As the preferred technical scheme of the above, after the telescopic rod moves upward by a distance, the tooth surface of the telescopic rod is in meshing contact with the driving gear, the telescopic rod pushes the driving gear to rotate, the driving gear drives the two first bevel gears to rotate, the two first bevel gears respectively drive the corresponding second bevel gears to rotate, the second bevel gears drive the driven gear to rotate and make the straight rack move, and the two straight racks drive the two smoothing rollers to reversely move through the mounting frame.

[0030] The beneficial effects of the present application are:

[0031] 1. The batteries pass through the detection equipment to obtain battery information in sequence, the computer groups the batteries according to grouping conditions, divides the batteries into a plurality of large groups through termination voltage data, and divides the batteries in the same large group into a plurality of small groups through discharge time, and the batteries are automatically grouped and labeled by the machine equipment, so that the difficulty of battery grouping is reduced, the work efficiency of battery grouping is improved, and the battery production efficiency is improved.

[0032] 2. The battery can be divided into a certain large group by the termination voltage data and into a certain small group by the discharge time data, so that the grouping is more simple and convenient;

[0033] 3. The connecting assembly can be partially retracted during the process of attaching the label to the adsorption head, so that the adsorption head and the battery surface are not in excessive contact, and the label is more stably attached to the battery surface;

[0034] 4. The connecting part can move the two flattening rollers in opposite directions by moving the telescopic rod upward, so that the flattening rollers on the label surface roll along the curved surface of the battery to flatten the two ends of the label that are not in contact with the battery surface due to the curved surface of the battery, so that the label is not folded or dropped due to other factors and cannot be normally grouped. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 shows the workflow of the embodiment;

[0036] Figure 2 shows the overall structure of the connecting assembly in the embodiment;

[0037] Figure 3 shows the front view of the connecting assembly in the embodiment;

[0038] Figure 4 shows the working state diagram of the connecting part in the embodiment.

[0039] In the figure: 10, adsorption head; 20, connecting assembly; 21, mounting shell; 22, telescopic rod; 23, return spring; 24, flattening roller; 251, driving gear; 252, first bevel gear; 253, second bevel gear; 254, driven gear; 255, straight rack; 26, mounting bracket. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical scheme and advantages of the embodiment of the present application more clear, the technical scheme of the present application will be described clearly and completely below in combination with the embodiment and the drawings of the specification.

[0041] EMBODIMENT

[0042] In Figure 1, an automatic grouping method for a power battery for an electric vehicle includes the following steps:

[0043] Step 1, battery data acquisition;

[0044] The main belt conveyor transmits a plurality of batteries in turn through the detection equipment, and the detection equipment contacts the positive and negative electrodes of the battery to obtain the battery information;

[0045] Step 2, data storage and summary;

[0046] The detection device transmits the battery information data to the connected computer, and the computer stores the battery information into a designated data table;

[0047] Step three, battery information grouping;

[0048] The computer groups the batteries according to the grouping condition, and labels the end voltage, discharge time, grouping information and date of the batteries, and the batteries within the screening condition are directly rejected;

[0049] Step four, printing barcode and attaching;

[0050] The computer prints the labeled information on the label by the barcode printing device connected with the computer, and the labeling device connected with the computer attaches the label on the corresponding battery;

[0051] Step five, battery screening and grouping;

[0052] The mechanical arm connected with the computer places the batteries on the corresponding secondary belt conveyor according to the label information, and the batteries within the same group are processed and assembled into complete power batteries.

[0053] The batteries sequentially pass through the detection device to obtain battery information, the computer groups the batteries according to the grouping condition, divides the batteries into multiple large groups through the end voltage data, and divides the batteries within the same large group into multiple small groups through the discharge time data, and the batteries are automatically grouped and labeled by the mechanical device, which can reduce the difficulty of battery grouping, improve the work efficiency of battery grouping, and thus improve the production efficiency of batteries.

[0054] In FIG. 1, the grouping condition in step three is that the starting value of the end voltage data is set, the batteries are sequentially divided into N large groups according to a specific end voltage data interval, the starting value of the discharge time data is set within the same large group, and the batteries are sequentially divided into N small groups according to a specific discharge time data interval, the computer divides the batteries into the corresponding small groups of the corresponding large groups according to the end voltage and the discharge time, and N is a natural number greater than 1.

[0055] Alternatively, the grouping condition in step three is that the starting value of the end voltage data is set, the batteries are sequentially divided into N large groups according to a specific end voltage data interval, the starting value of the discharge time data is set within the same large group, and the batteries are sequentially divided into M small groups according to a specific discharge time data interval, the computer divides the batteries into the corresponding small groups of the corresponding large groups according to the end voltage and the discharge time, N and M are both natural numbers greater than 1, and N and M are different.

[0056] The grouping condition can first divide the batteries into a specific large group through the end voltage data, and divide the batteries into a specific small group through the discharge time data, so that the grouping is more simple and convenient.

[0057] In FIG. 1, the screening condition in step three is that the end voltage data of the battery is lower than the initial value of the end voltage data, or the discharge time of the battery is lower than the initial value of the discharge time data.

[0058] The set screening condition can screen out the batteries that do not meet the matching condition. After the information of the batteries that do not meet the matching condition is summarized, the battery production is adjusted through the information summary data, so as to reduce the proportion of the batteries that do not meet the matching condition.

[0059] In FIGS. 2-3, the labeling device comprises a power assembly, a connecting assembly 20 and a suction head 10. The connecting assembly 20 is used to connect the power assembly and the suction head 10. The connecting assembly 20 comprises a mounting shell 21 and a telescopic rod 22. One end of the telescopic rod 22 is movably inserted into the mounting shell 21 in the vertical direction. A return spring 23 is fixedly connected between the telescopic rod 22 and the mounting shell 21. The power assembly drives the suction head 10 to take the label off the label paper through the connecting assembly 20. The suction head 10 pushes the telescopic rod 22 upward to attach the label to the surface of the battery.

[0060] The first end of the telescopic rod 22 is located in the mounting shell 21, and the second end of the telescopic rod 22 is located outside the mounting shell 21. The first end is connected to the return spring 23, and the second end is connected to the suction head 10. As shown in FIG. 3, the first end of the telescopic rod 22 is, for example, the upper end, and the second end is, for example, the lower end.

[0061] When the power assembly drives the suction head 10 to move through the connecting assembly 20, the suction head 10 first moves above the label paper to take the label off, and then moves above the battery to which the label needs to be attached for labeling. When the suction head 10 moves downward to take the label or attach the label, the label paper or the battery pushes the suction head 10 in the opposite direction, so that the telescopic rod 22 moves upward, and the return spring 23 is retracted, so as to avoid excessive contact between the suction head 10 and the label paper or the battery.

[0062] The set connecting assembly 20 can retract part of the suction head 10 during the labeling process, so as to avoid excessive contact between the suction head 10 and the surface of the battery and to prevent the surface of the battery from being deformed by being pressed. After the suction head 10 is retracted, the contact time between the label and the surface of the battery can be increased, so that the label is more stably attached to the surface of the battery.

[0063] In FIGS. 2-4, the connecting assembly 20 further comprises a smoothing component. The smoothing component comprises a connecting part and two smoothing rollers 24. The connecting part moves the two smoothing rollers 24 towards or away from each other through the reciprocating movement of the telescopic rod 22 in the vertical direction. The two smoothing rollers 24 are located on both sides of the telescopic rod 22.

[0064] The connecting part comprises a driving gear 251, the telescopic rod 22 is provided with a tooth surface matched with the driving gear 251, the driving gear 251 is coaxially provided with a first bevel gear 252 at two ends, the first bevel gear 252 is connected with a second bevel gear 253 on one side in meshing, the second bevel gear 253 is coaxially provided with a driven gear 254 at one end, the driven gear 254 is connected with a straight rack 255 on one side in meshing, and the straight rack 255 is fixedly connected with the mounting frame 26 at one end.

[0065] When the telescopic rod 22 moves upward, the smoothing roller 24 gradually pushes the label into contact with the surface of the battery under the adsorption head 10, then the telescopic rod 22 contacts and pushes the driving gear 251 to rotate, the two first bevel gears 252 rotate and drive the corresponding second bevel gears 253 to rotate, the second bevel gears 253 rotate and drive the driven gear 254 to rotate and make the straight rack 255 move, the two straight racks 255 drive the two smoothing rollers 24 to move reversely through the mounting frame 26, and the smoothing rollers 24 move along the arc surface of the battery to smooth the label.

[0066] The connecting part is arranged to reversely move the two smoothing rollers 24 through the upward movement of the telescopic rod 22, the smoothing roller 24 in contact with the label surface rolls along the arc surface of the battery to smooth the label at the two ends that are lifted up due to the arc surface of the battery not being in contact with the surface of the battery, and the label is prevented from being folded or falling due to other factors to fail to be normally matched.

[0067] In FIGS. 3-4, the connecting part is symmetrically arranged relative to the middle part of the telescopic rod 22, and the telescopic rod 22 is located at the bottommost position and is not in meshing with the driving gear 251.

[0068] The telescopic rod 22 is in meshing with the driving gear 251 after moving upward by a distance, the smoothing roller 24 can be in contact with the surface of the battery in advance, and moves to one side when the telescopic rod 22 continues to contract, so that the smoothing roller 24 moves along the arc surface of the battery and pushes the label.

[0069] In FIGS. 2-4, the smoothing roller 24 is rotatably inserted into the mounting frame 26 at one end, and the smoothing roller 24 rolls in cooperation with the surface of the battery.

[0070] The rotating smoothing roller 24 can change the sliding friction with the arc surface of the battery into rolling friction, can reduce the influence on the label, and can prevent the label surface information from being scratched to cause a condition that the label cannot be normally matched.

[0071] The above embodiments are only used to illustrate the technical solutions of the present application, and not limit the same.

Claims

1. An automatic matching method for power batteries of electric vehicles, characterized in that, The method comprises the following steps: Step one, battery data collection; The main belt conveyor transports the batteries through the detection equipment one by one, and the detection equipment contacts the positive and negative electrodes of the batteries to obtain the battery information; Step two, data storage and collection; The detection equipment transmits the battery information data to the connected computer, and the computer stores the battery information in the designated data table; Step three, battery information grouping; The computer groups the batteries according to the grouping conditions, and labels the end voltage, discharge time, grouping information and date of the batteries, and the batteries within the screening conditions are directly removed; Step four, printing bar code and attaching; The computer prints the label on the label through the bar code printing equipment connected with the computer, and the labeling equipment connected with the computer attaches the label to the corresponding battery; Step five, battery screening and grouping; The robot connected with the computer places the batteries on the corresponding sub-belt conveyor according to the label information, and the batteries in the same group are processed and assembled into complete power batteries.

2. The automatic grouping method of power battery for electric vehicle according to claim 1, characterized in that, In step three, the grouping conditions are: setting the starting value of the end voltage data, and dividing the batteries into N large groups according to the specific end voltage data interval, setting the starting value of the discharge time data in the same large group, and dividing the batteries into N small groups according to the specific discharge time data interval, and the computer divides the batteries into the corresponding small groups in the corresponding large groups according to the end voltage and discharge time, and N is a natural number greater than 1.

3. The automatic grouping method of power battery for electric vehicle according to claim 1, characterized in that, In step three, the grouping conditions are: setting the starting value of the end voltage data, and dividing the batteries into N large groups according to the specific end voltage data interval, setting the starting value of the discharge time data in the same large group, and dividing the batteries into M small groups according to the specific discharge time data interval, and the computer divides the batteries into the corresponding small groups in the corresponding large groups according to the end voltage and discharge time, and N and M are natural numbers greater than 1, and N and M are different.

4. The automatic grouping method of power batteries for electric vehicles according to claim 2 or 3, characterized in that, In step three, the screening conditions are: the end voltage data of the battery is lower than the starting value of the end voltage data, or the discharge time of the battery is lower than the starting value of the discharge time data.

5. The automatic grouping method of power battery for electric vehicle according to claim 1, characterized in that, The labeling equipment comprises a power assembly, a connecting assembly (20) and a suction head (10), the connecting assembly (20) is used for connecting the power assembly and the suction head (10), the connecting assembly (20) comprises a mounting shell (21) and a telescopic rod (22), one end of the telescopic rod (22) is movably inserted into the mounting shell (21) in the vertical direction, and a return spring (23) is fixedly connected between the telescopic rod (22) and the mounting shell (21), the power assembly drives the suction head (10) to take the label off the label paper through the connecting assembly (20), and the suction head (10) attaches the label to the surface of the battery to push the telescopic rod (22) upward.

6. The automatic grouping method of power battery for electric vehicle according to claim 5, characterized in that, The first end of the telescopic rod (22) is located in the mounting shell (21), the second end of the telescopic rod (22) is located outside the mounting shell (21), the first end is connected with the return spring (23), and the second end is connected with the suction head (10).

7. The automatic grouping method of power battery for electric vehicle according to claim 5, characterized in that, The connecting assembly (20) further comprises a smoothing component, which comprises a connecting part and two smoothing rollers (24), and the two smoothing rollers (24) are moved towards or away from each other through the reciprocating movement of the connecting part in the vertical direction by means of the telescopic rod (22).

8. The automatic grouping method of power battery for electric vehicle according to claim 7, characterized in that, The two smoothing rollers (24) are respectively located on both sides of the telescopic rod (22).

9. The automatic grouping method of power battery for electric vehicle according to claim 7, characterized in that, The connecting part comprises a driving gear (251), the surface of the telescopic rod (22) is provided with a tooth surface matched with the driving gear (251), coaxial first bevel gears (252) are arranged at both ends of the driving gear (251), a second bevel gear (253) is meshed and connected on one side of each first bevel gear (252), a driven gear (254) is coaxially arranged at one end of the second bevel gear (253), and a straight rack (255) is meshed and connected on one side of the driven gear (254), and one end of the straight rack (255) is fixedly connected with a mounting frame (26).

10. The automatic grouping method of power battery for electric vehicle according to claim 9, characterized in that, The connecting part is symmetrically arranged relative to the middle part of the telescopic rod (22), and the telescopic rod (22) is not meshed with the driving gear (251) when located at the bottommost position.

11. The automatic grouping method of power battery for electric vehicle according to claim 9, characterized in that, One end of the smoothing roller (24) is rotatably inserted into the mounting frame (26), and the smoothing roller (24) is rolling matched with the surface of the battery.

12. The automatic grouping method of power batteries for electric vehicles according to claim 11, characterized in that, After the telescopic rod (22) moves upward by a distance, the tooth surface of the telescopic rod (22) is in meshing contact with the driving gear (251), the telescopic rod (22) drives the driving gear (251) to rotate, the driving gear (251) drives the two first bevel gears (252) to rotate, the two first bevel gears (252) drive the corresponding second bevel gears (253) to rotate respectively, the second bevel gears (253) drive the driven gear (254) to rotate and make the straight rack (255) move, and the two straight racks (255) drive the two smoothing rollers (24) to move away from each other through the mounting frame (26).

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