Hot plug test fixture and method thereof

Abstract

The application provides a hot plug test tool and a test method thereof. The hot plug test tool comprises a plurality of gating branches, a plurality of discharge branches and a controller. The plurality of gating branches are connected with a battery module and a battery information collector. The plurality of discharge branches are connected with the plurality of gating branches. The controller is connected with the plurality of gating branches and the plurality of discharge branches. The controller is used for controlling at least two gating branches in the plurality of gating branches to be closed and opened once, and controlling all the gating branches to be closed and opened once as a working condition test, so as to test the working condition of the battery collector corresponding to the port of the battery module. The controller is also used for controlling the discharge branch to be closed after each working condition test, so that the discharge branch discharges the capacitor connected with the port of the battery information collector. The application simulates the artificial plug test, improves the plug efficiency, shortens the verification time, improves the reliability of the product, reduces the later version, and reduces the maintenance cost.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hot plug testing, in particular to a hot plug testing tool and a testing method thereof. BACKGROUND

[0002] Battery information collector plug-in refers to that after the collector is plugged in and out of the battery module for multiple times, the transient voltage generated thereby does not damage the electronic devices in the battery information collector and does not affect the subsequent use. With the popularization of electric vehicles, the delivery volume of the battery information collector increases, the iteration speed of the battery information collector accelerates, and the development time is shortened, resulting in reduced product reliability. If the hot plug verification of the battery information collector is insufficient, it may cause the risk of burning the battery module during trial production, resulting in a large loss of manpower and material resources. In the related art, the hot plug verification of the battery information collector is performed by manually plugging in and out multiple times or grabbing the channel current waveform by single plugging in, which may cause the following problems: (1) the test sample size is small, which is quite troublesome, time-consuming and labor-intensive; (2) the pins of the connector cannot be flush, and it is impossible to ensure that each pin is contacted during manual plugging in, which cannot cover the plugging conditions of all pins. SUMMARY

[0003] The present application provides a hot plug testing tool and a testing method thereof, which can improve the plugging efficiency and shorten the verification time.

[0004] The present application provides a hot plug testing tool connected between a battery module and a battery information collector, which comprises:

[0005] A plurality of gating branches connected with the battery module and the battery information collector;

[0006] A plurality of discharge branches connected with any two of the gating branches in the plurality of gating branches;

[0007] A controller connected with the plurality of gating branches and the plurality of discharge branches; the controller is configured to control at least two of the gating branches in the plurality of gating branches to be closed and disconnected once, and control all of the gating branches to be closed and disconnected once as a working condition test, so as to test the working condition of the battery collector corresponding to the port of the battery module when the battery collector is hot-plugged into the battery module, and control the discharge branch to be closed after each working condition test, so that the discharge branch discharges the capacitance connected with the port of the battery information collector.

[0008] Optionally, the plurality of gating branches comprise a plurality of pass-through switches, and the controller is configured to control at least two of the pass-through switches to be closed and opened once, and control all of the pass-through switches to be closed and opened once as a test of one working condition, and perform a plurality of tests of working conditions according to a sequence number of the pass-through switches in ascending order to complete the port hot plug of the battery information collector into all of the cells corresponding to the battery.

[0009] Optionally, the controller is configured to control all of the discharge branches to be closed to discharge the capacitance connected to the port of the battery information collector after each test of working condition.

[0010] Optionally, the battery module comprises a first cell, a second cell and a third cell, the gating branches comprise a first gating branch, a second gating branch, a third gating branch and a fourth gating branch, one end of the first gating branch is connected to a negative electrode of the first cell, and the other end is connected to the battery information collector, one end of the second gating branch is connected between a positive electrode of the first cell and a negative electrode of the second cell, and the other end is connected to the battery information collector, one end of the third gating branch is connected between a positive electrode of the second cell and a negative electrode of the third cell, and the other end is connected to the battery information collector, one end of the fourth gating branch is connected to a positive electrode of the third cell, and the other end is connected to the battery information collector, the discharge branches comprise a first discharge branch, a second discharge branch and a third discharge branch, the first discharge branch is connected between the second gating branch and the first gating branch, the second discharge branch is connected between the third gating branch and the first gating branch, and the third discharge branch is connected between the fourth gating branch and the first gating branch.

[0011] Optionally, the discharge branch comprises a discharge switch and a discharge resistor connected to the discharge switch, the discharge switch is connected to the controller, and the controller is configured to control the discharge switch to be closed and discharge the capacitance connected to the port of the battery information collector by using the discharge resistor after each test of working condition.

[0012] Optionally, the plurality of gating branches and the plurality of discharge branches are integrated on the same circuit board.

[0013] The application also provides a hot plug test method for testing working conditions of a battery collector hot plugged into a battery module by using a hot plug test tool, the hot plug test tool comprises a plurality of gating branches, a plurality of discharge branches and a controller, the controller is connected to the plurality of gating branches and the plurality of discharge branches, and the hot plug test method comprises:

[0014] The plurality of gating branches are provided for gating the connection of the battery cells of the battery module and the ports of the battery information collector;

[0015] The plurality of discharge branches are provided for discharging the capacitance connected to the ports of the battery information collector; and

[0016] The controller is configured to control at least two of the gating branches to be closed and opened once, and control all of the gating branches to be closed and opened once as a working condition test for testing the working condition of the ports of the battery collector being hot-plugged into the battery cells of the battery module, and control the discharge branches to be closed to discharge the capacitance connected to the ports of the battery information collector after each working condition test.

[0017] Optionally, the plurality of gating branches comprises a plurality of path switches; and the controller is configured to control at least two of the gating branches to be turned on to test the working condition of the ports of the battery collector being hot-plugged into the battery cells of the battery module, comprising:

[0018] The controller is configured to control at least two of the path switches to be closed and opened once, and control all of the path switches to be closed and opened once as a working condition test, and perform multiple working condition tests according to the increasing sequence of the arrangement numbers of the path switches to complete all working conditions of the ports of the battery information collector being hot-plugged into the battery cells of the battery module.

[0019] Optionally, the controller is configured to control the discharge branches to be closed to discharge the capacitance connected to the ports of the battery information collector after each working condition test, comprising:

[0020] The controller is further configured to control all of the discharge branches to be closed to discharge the capacitance connected to the ports of the battery information collector after each working condition test.

[0021] Optionally, the discharge branch comprises a discharge switch and a discharge resistor connected to the discharge switch, and the discharge switch is connected to the controller; and the controller is configured to control the discharge branch to be closed to discharge the capacitance connected to the ports of the battery information collector after each working condition test, comprising:

[0022] The controller is configured to control the discharge switch to be closed and discharge the capacitance connected to the ports of the battery information collector by using the discharge resistor after each working condition test.

[0023] Optionally, the plurality of gating branches and the plurality of discharge branches are integrated on the same circuit board.

[0024] The hot plug test tool of the embodiment of the application is connected between the battery module and the battery information collector, and is used for testing the working condition of the port of the battery collector hot plugging into the battery cell of the battery module. The hot plug test tool comprises a plurality of gating branches, a plurality of discharge branches and a controller. The controller is connected with the plurality of gating branches and the plurality of discharge branches. The controller is used for controlling at least two gating branches in the plurality of gating branches to be closed and opened once, and controlling all the gating branches to be closed and opened once as a working condition test, so as to test the working condition of the port of the battery collector hot plugging into the battery cell of the battery module. The controller is also used for controlling the discharge branch to be closed after each working condition test, so that the discharge branch discharges the capacitor connected with the port of the battery information collector. In this way, the controller controls at least two gating branches in the plurality of gating branches to be closed and opened once, and controls all the gating branches to be closed and opened once as a working condition test, and the working condition test is repeated for multiple times, so as to simulate the manual plug test, verify the hot plug capability of the battery collector in the full working condition, improve the plug efficiency, shorten the verification time, improve the reliability of the product, and reduce the maintenance cost in the later period.

[0025] It should be understood that the foregoing general description and the following detailed description are only exemplary and explanatory, and cannot limit the application. BRIEF DESCRIPTION OF DRAWINGS

[0026] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and serve to explain the principles of the application together with the specification.

[0027] Figure 1 Fig. 1 shows a structure schematic diagram of one embodiment of the hot plug test tool of the application.

[0028] Figure 2 Fig. 2 shows a step flow chart of one embodiment of the hot plug test method of the application. DETAILED DESCRIPTION

[0029] The exemplary embodiments will be described in detail herein with reference to the attached drawings. The following description is only exemplary and explanatory, and cannot limit the application. The same reference numbers in different drawings represent the same or similar elements.

[0030] The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. Unless otherwise defined, all terms of art used herein have the same meaning as commonly understood by one of ordinary skill in the art in the field of the application. As used in this application, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising", or "includes" and / or "including" when used in this specification, specify the presence of stated features, regions, integers, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, regions, integers, steps, operations, elements, components, and / or groups thereof.

[0031] The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising", or "includes" and / or "including" when used in this specification, specify the presence of stated features, regions, integers, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, regions, integers, steps, operations, elements, components, and / or groups thereof.

[0032] The application provides a hot plug test tool and a test method thereof. The hot plug test tool is connected between a battery module and a battery information collector, and is used for testing the hot plug capability of the battery collector. The hot plug test tool comprises a plurality of gating branches, a plurality of discharge branches and a controller. The plurality of gating branches are connected between the battery module and the battery information collector. The plurality of discharge branches are connected between any two gating branches of the plurality of gating branches. The controller is connected with the plurality of gating branches and the plurality of discharge branches. The controller is used for controlling at least two gating branches of the plurality of gating branches to be closed and opened once, and controlling all the gating branches to be closed and opened once as a working condition test, so as to test the working condition of the battery collector corresponding to the port of the battery module. The controller is also used for controlling the discharge branch to be closed after each working condition test, so that the discharge branch discharges the capacitance connected with the port of the battery information collector. In this way, the controller is used for controlling at least two gating branches of the plurality of gating branches to be closed and opened once, and controlling all the gating branches to be closed and opened once as a working condition test, and the working condition test is repeated for multiple times, so as to simulate the human plug test, verify the hot plug capability of the battery collector in all working conditions, improve the plug efficiency, shorten the verification time, improve the reliability of the product, reduce the later version, and reduce the maintenance cost.

[0033] Figure 1 The structure diagram of one embodiment of the hot plug test tool 1 is shown. As Figure 1As shown, the hot plug test tool 1 is connected between the battery module 2 and the battery information collector 3, and is used to test the hot plug capability of the battery collector 3 hot plugging into the battery module 2. The hot plug test tool 1 comprises a plurality of gating branches 11, a plurality of discharge branches 12 and a controller 13. The plurality of gating branches 11 are connected between the battery module 2 and the battery information collector 3. In this embodiment, the plurality of gating branches 11 are connected in parallel between the battery cell 201 of the battery module 2 and the port 301 of the battery information collector 3. The plurality of discharge branches 12 are connected with the plurality of gating branches 11. In this embodiment, one discharge branch 12 is connected between two gating branches 11, and forms a discharge loop with the capacitor (not shown) of the port of the battery collector 3. The controller 13 is connected with the plurality of gating branches 11 and the plurality of discharge branches 12. The controller 13 is used to control at least two gating branches 11 in the plurality of gating branches 11 to be closed and opened once, and control all the gating branches 11 to be closed and opened once as a working condition test, so as to test the working condition of the corresponding port 301 of the battery collector 3 hot plugging into the battery cell 201 of the battery module 2, and control the discharge branch 12 to be closed after each working condition test, so as to discharge the capacitor connected with the port of the battery information collector 3. In this embodiment, the controller 13 is used to control at least two gating branches 11 in the plurality of gating branches 11 to be closed and opened once, and control all the gating branches 11 to be closed and opened once as a working condition test. In some embodiments, the controller 13 controls two or more gating branches 11 in the plurality of gating branches 11 to be closed and opened once, and controls all the gating branches 11 to be closed and opened once as a working condition test. After one working condition test, the discharge branch 12 is closed, and forms a discharge loop with the capacitor connected with the port of the battery information collector 3, so as to discharge the voltage of the capacitor connected with the port of the battery information collector 3 by using the discharge branch 12. In this way, the controller 13 is used to control at least two gating branches 11 in the plurality of gating branches 11 to be closed and opened once, and control all the gating branches 11 to be closed and opened once as a working condition test, and the working condition test is repeated for multiple times, so as to simulate the human plug test, verify the hot plug capability of the battery collector 3 in all working conditions, improve the plug efficiency, shorten the verification time, improve the reliability of the product, and reduce the later revision and maintenance cost.

[0034] In Figure 1In the illustrated embodiment, the plurality of gating branches 11 includes a plurality of pass-through switches 111, and the controller 13 is configured to control at least two pass-through switches 111 to be closed and opened once, and control all pass-through switches 111 to be closed and opened once as a test of one working condition, and perform a plurality of tests of working conditions according to the sequence number of the pass-through switches 111 in ascending order to complete all working conditions of the battery information collector 3. In some embodiments, the controller 13 is configured to control two or more pass-through switches 111 to be closed and opened once, and control all pass-through switches 111 to be closed and opened once as a test of one working condition. The controller 13 performs a plurality of tests of working conditions according to the sequence number of the pass-through switches 111 in ascending order. For example, first, two pass-through switches 111 that can be combined in the plurality of pass-through switches 111 are controlled to be turned on in ascending order according to their sequence numbers, then three pass-through switches 111 that can be combined in the plurality of pass-through switches 111 are controlled to be closed and opened once, and all pass-through switches 111 are controlled to be closed and opened once, and then turned on in ascending order according to their sequence numbers, and then sequentially traversed, and finally all pass-through switches 111 are closed and opened once, so as to complete all working conditions of the battery information collector 3. In this way, the controller 13 is used to control at least two gating branches 11 in the plurality of gating branches 11 to be closed and opened once, and control all pass-through switches 111 to be closed and opened once as a test of one working condition, and perform a plurality of tests of working conditions to simulate human plugging and unplugging tests, verify the hot plugging and unplugging capability of the battery information collector 3 in all working conditions, improve the plugging and unplugging efficiency, shorten the verification time, improve the reliability of the product, and reduce the maintenance cost in the later version.

[0035] In Figure 1 In the illustrated embodiment, the controller 13 is configured to control all discharge branches 12 to be closed after each test of working conditions to discharge the capacitance connected to the port of the battery information collector 3 by the discharge branches 12. Since the closing time of the discharge branches 12 is short, all discharge branches 12 are closed after each test of working conditions to improve the discharge efficiency and facilitate operation.

[0036] In Figure 1In the shown embodiment, the discharge branch 12 comprises a discharge switch 121 and a discharge resistor 122 connected to the discharge switch 121, and the discharge switch 121 is connected to the controller 13, and the controller 13 is configured to control the discharge switch 121 to be closed after each test of the working condition, and to discharge the capacitor connected to the port 301 of the battery information collector 3 by using the discharge resistor 122. In the embodiment, the controller 13 is configured to control the discharge switch 121 to be closed after each test of the working condition, and to discharge the capacitor connected to the port 301 of the battery information collector 3 by using the discharge resistor 122. In this way, the controller 13 controls the discharge switch 121 to be closed, so that the discharge resistor 122 and the capacitor connected to the port 301 of the battery information collector 3 form a discharge circuit, to discharge the voltage of the capacitor connected to the port 301 of the battery information collector 3, which is safe and reliable.

[0037] In Figure 1 In the shown embodiment, the plurality of gating branches 11 and the plurality of discharge branches 12 are integrated on the same circuit board. In this way, the plurality of gating branches 11 and the plurality of discharge branches 12 are integrated on the same circuit board, which has high integration degree, small size and simple structure.

[0038] In the embodiment, the battery module 2 comprises a first battery cell 202, a second battery cell 203 and a third battery cell. The gating branch 11 comprises a first gating branch 112, a second gating branch 113, a third gating branch and a fourth gating branch. One end of the first gating branch 112 is connected to the negative electrode of the first battery cell 202, and the other end is connected to the battery information collector 3. One end of the second gating branch 113 is connected between the positive electrode of the first battery cell 202 and the negative electrode of the second battery cell 203, and the other end is connected to the battery information collector 3. One end of the third gating branch is connected between the positive electrode of the second battery cell 203 and the negative electrode of the third battery cell, and the other end is connected to the battery information collector 3. One end of the fourth gating branch is connected to the positive electrode of the third battery cell, and the other end is connected to the battery information collector 3. The discharge branch 12 comprises a first discharge branch 123, a second discharge branch and a third discharge branch. The first discharge branch 123 is connected between the second gating branch 113 and the first gating branch 112. The second discharge branch is connected between the third gating branch and the first gating branch 112. The third discharge branch is connected between the fourth gating branch and the first gating branch 112. Figure 1In the illustrated embodiment, the plurality of pass switches 111 includes pass switches S0, S1, S2,..., Sn-1, Sn. The first gating branch 112 includes pass switch S0. Similarly, the second gating branch 113 includes pass switch S1. The third gating branch includes pass switch S2. The fourth gating branch includes pass switch S3. The plurality of bleed switches 121 includes bleed switches K0, K1, K2,..., Kn-1, Kn. The plurality of bleed resistors 122 includes bleed resistors R0, R1, R2,..., Rn-1, Rn. The first bleed branch 123 includes bleed switch K0 and bleed resistor R0. Similarly, the second bleed branch includes bleed switch K1 and bleed resistor R1. The third bleed branch includes bleed switch K2 and bleed resistor R2.

[0039] In actual working condition tests, in some embodiments, the controller 13 can control at least two pass switches 111 in the plurality of pass switches 111 to be closed and opened once, and control all pass switches 111 to be closed and opened once, which can be regarded as a working condition test. The controller 13 can sequentially increase the serial numbers of the pass switches 111 to control two pass switches 111 to be closed, complete a plurality of working condition tests of two pass switches 111 being closed, and thus test the working condition of the port 301 of the battery information collector 3 corresponding to the thermal insertion of one cell 201 of the battery module 2.

[0040] First, the controller 13 can control two pass switches S0 and S1 to be closed and opened once, and control all pass switches S0, S1, S2,..., Sn-1, Sn to be closed and opened once, which can be regarded as a working condition test. After the working condition test, all bleed switches K0, K1, K2,..., Kn-1, Kn are controlled to be closed, and the capacitor connected to the port 301 of the battery information collector 3 is discharged by using the bleed resistor R0 connected to the two pass switches S0 and S1. In this process, the bleed switch K0 is closed, the two pass switches S0 and S1 are connected to the bleed resistor R0, and the capacitor connected to the port 301 of the battery information collector 3 forms a discharge loop, mainly using the bleed resistor R0 to discharge.

[0041] After the second time, the controller 13 can also control the two passage switches S0, S2 to be closed and opened once, and control all the passage switches S0, S1, S2,..., Sn-1, Sn to be closed and opened once, which can be used as the n time working condition test. After the n time working condition test, the controller 13 controls all the bleed switches K0, K1, K2,..., Kn-1, Kn to be closed, and uses the bleed resistor Rn connected with the two passage switches S0, Sn to discharge the capacitor connected with the port 301 of the battery information collector 3. In this process, the bleed switch Kn is closed, so that the two passage switches S0, Sn are connected with the bleed resistor Rn, and the capacitor connected with the port 301 of the battery information collector 3 forms a discharge loop, mainly using the bleed resistor Rn to discharge.

[0042] Then, the controller 13 can also control the two passage switches S0, Sn to be closed and opened once, and control all the passage switches S0, S1, S2,..., Sn-1, Sn to be closed and opened once, which can be used as the n time working condition test. After the n time working condition test, the controller 13 controls all the bleed switches K0, K1, K2,..., Kn-1, Kn to be closed, and uses the bleed resistor Rn connected with the two passage switches S0, Sn to discharge the capacitor connected with the port 301 of the battery information collector 3. In this process, the bleed switch Kn is closed, so that the two passage switches S0, Sn are connected with the bleed resistor Rn, and the capacitor connected with the port 301 of the battery information collector 3 forms a discharge loop, mainly using the bleed resistor Rn to discharge.

[0043] Then, the controller 13 can also control the two passage switches S0, Sn to be closed and opened once, and control all the passage switches S0, S1, S2,..., Sn-1, Sn to be closed and opened once, which can be used as the n time working condition test. After the n time working condition test, the controller 13 controls all the bleed switches K0, K1, K2,..., Kn-1, Kn to be closed, and uses the bleed resistor Rn connected with the two passage switches S0, Sn to discharge the capacitor connected with the port 301 of the battery information collector 3. In this process, the bleed switch Kn is closed, so that the two passage switches S0, Sn are connected with the bleed resistor Rn, and the capacitor connected with the port 301 of the battery information collector 3 forms a discharge loop, mainly using the bleed resistor Rn to discharge.

[0044] Then, according to the sequence number of the path switch 111, the controller 13 can control the three path switches S0, S1, S2 to be closed and opened once, and control all the path switches S0, S1, S2,..., Sn-1, Sn to be closed and opened once, which can be used as a working condition test. After the working condition test, the controller 13 controls all the discharge switches K0, K1, K2,..., Kn-1, Kn to be closed, and discharges the capacitor connected to the port 301 of the battery information collector 3. Then, the controller 13 can control the three path switches S0, S1, S3 to be closed and opened once, and control all the path switches S0, S1, S2,..., Sn-1, Sn to be closed and opened once, which can be used as a working condition test. After the working condition test, the controller 13 controls all the discharge switches K0, K1, K2,..., Kn-1, Kn to be closed, and discharges the capacitor connected to the port 301 of the battery information collector 3. In this way, the increment traversal is performed until the test of all the three path switches 111 in the plurality of path switches 111 is completed.

[0045] Then, according to the sequence number of the path switch 111, the controller 13 can control the three path switches S0, S1, S2 to be closed and opened once, and control all the path switches S0, S1, S2,..., Sn-1, Sn to be closed and opened once, which can be used as a working condition test. After the working condition test, the controller 13 controls all the discharge switches K0, K1, K2,..., Kn-1, Kn to be closed, and discharges the capacitor connected to the port 301 of the battery information collector 3. Then, the controller 13 can control the three path switches S0, S1, S3 to be closed and opened once, and control all the path switches S0, S1, S2,..., Sn-1, Sn to be closed and opened once, which can be used as a working condition test. After the working condition test, the controller 13 controls all the discharge switches K0, K1, K2,..., Kn-1, Kn to be closed, and discharges the capacitor connected to the port 301 of the battery information collector 3. In this way, the increment traversal is performed until the test of all the three path switches 111 in the plurality of path switches 111 is completed.

[0046] The hot plug test tool 1 of the embodiment is used to control at least two gating branches 11 in the plurality of gating branches 11 to be closed and opened once, and control all the gating branches to be closed and opened once, which can be used as a working condition test. The hot plug test tool 1 is used to simulate the human plug test, verify the hot plug capability of the battery collector 3 in all working conditions, improve the plug efficiency, shorten the verification time, improve the reliability of the product, and reduce the maintenance cost in the later version.

[0047] Figure 2 The embodiment of the hot plug test method of the application is shown in the step flow chart. The hot plug test method uses Figure 1 The hot plug test tool 1 shown in the embodiment is used to test the working condition of the battery collector 3 hot-plugged into the battery module 2. In the embodiment, the hot plug test method uses Figure 1 The hot plug test tool 1 shown in the embodiment is used to test the working condition of the battery collector 3 hot-plugged into the battery module 2. In the embodiment, the hot plug test method uses Figure 2 In the embodiment, the hot plug test method includes steps S1 to S3. In the embodiment, the hot plug test method includes steps S1 to S3.

[0048] Step S1, providing a plurality of gating branches 11 for gating the connection of the battery cell 201 of the battery module 2 and the port 301 of the battery information collector 3. In Figure 1 In the embodiment shown, the plurality of gating branches 11 are connected between the battery module 2 and the battery information collector 3. In this embodiment, the plurality of gating branches 11 are connected in parallel between the battery cell 201 of the battery module 2 and the port 301 of the battery information collector 3.

[0049] Step S2, providing a plurality of discharge branches 12 for discharging the capacitance connected to the port 301 of the battery information collector 3. In Figure 1 In the embodiment shown, the plurality of discharge branches 12 are connected between any two of the plurality of gating branches 11. In this embodiment, one discharge branch 12 is connected between any two of the plurality of gating branches 11, and the discharge branch 12 forms a discharge loop with the capacitance (not shown) of the port of the battery collector 3.

[0050] Step S3, providing a controller 13 for controlling at least two of the plurality of gating branches 11 to be closed and opened once, and controlling all the gating branches to be closed and opened once as a working condition test to test the working condition of the corresponding port 301 of the battery information collector 33 to hot plug the battery cell 201 of the battery module 2, and for controlling the discharge branch 12 to be closed to discharge the capacitance connected to the port 301 of the battery information collector 3 after each working condition test. In this embodiment, the controller 13 is used to control at least two of the plurality of gating branches 11 to be closed and opened once, and control all the gating branches 11 to be closed and opened once as a working condition test. In some embodiments, the controller 13 controls two or more of the plurality of gating branches 11 to be closed and opened once, and controls all the gating branches 11 to be closed and opened once as a working condition test. After a working condition test, the discharge branch 12 is closed, and the discharge branch 12 forms a discharge loop with the capacitance connected to the port of the battery information collector 3, and the voltage of the capacitance connected to the port of the battery information collector 3 is discharged by the discharge branch 12. In this way, the controller 13 is used to control at least two of the plurality of gating branches 11 to be closed and opened once, and control all the gating branches 11 to be closed and opened once as a working condition test, and the working condition test is repeated multiple times to simulate human plugging and unplugging tests to verify the full working condition hot plugging capability of the battery collector 3, improve plugging efficiency, shorten verification time, improve product reliability, and reduce later version modification and maintenance costs.

[0051] In some embodiments, the plurality of gating branches 11 includes a plurality of pass-through switches 111, and the controller 13 is configured to control at least two pass-through switches 111 to be closed and opened once, and control all pass-through switches 111 to be closed and opened once as a test of one working condition, and perform a plurality of tests of working conditions according to the sequence number of the pass-through switches 111 in ascending order to complete all working conditions of the battery information collector 3. In some embodiments, the controller 13 is configured to control two or more pass-through switches 111 to be closed and opened once, and control all pass-through switches 111 to be closed and opened once as a test of one working condition. The controller 13 performs a plurality of tests of working conditions according to the sequence number of the pass-through switches 111 in ascending order. For example, first, two pass-through switches 111 that can be combined in the plurality of pass-through switches 111 are controlled to be turned on in ascending order of the sequence number, then three pass-through switches 111 that can be combined in the plurality of pass-through switches 111 are controlled to be closed and opened once, and all pass-through switches 111 are controlled to be closed and opened once, and then turned on in ascending order of the sequence number, and then sequentially traversed, and finally all pass-through switches 111 are controlled to be closed and opened once, so as to complete all working conditions of the battery information collector 3. In this way, the controller 13 is configured to control at least two gating branches 11 in the plurality of gating branches 11 to be closed and opened once, and control all pass-through switches 111 to be closed and opened once as a test of one working condition, and perform a plurality of tests of working conditions to simulate human plugging and unplugging tests, verify the hot plugging and unplugging capability of the battery information collector 3 in all working conditions, improve the plugging and unplugging efficiency, shorten the verification time, improve the reliability of the product, and reduce the maintenance cost in the later period.

[0052] In some embodiments, the controller 13 is configured to control the discharge branch 12 to be closed after each test of working conditions to discharge the capacitance connected to the port 301 of the battery information collector 3, and the controller 13 is further configured to control all discharge branches 12 to be closed after each test of working conditions to discharge the capacitance connected to the port 301 of the battery information collector 3. Since the discharge branch 12 is closed for a short time, all discharge branches 12 are closed after each test of working conditions to improve the discharge efficiency and facilitate operation.

[0053] In some embodiments, the bleed branch 12 comprises a bleed switch 121 and a bleed resistor 122 connected to the bleed switch 121, and the bleed switch 121 is connected to the controller 13; the controller 13 is configured to control the bleed branch 12 to be closed after each test of the working condition, so as to discharge the capacitor connected to the port 301 of the battery information collector 3, comprising: the controller 13 is configured to control the bleed switch 121 to be closed after each test of the working condition, and discharge the capacitor connected to the port 301 of the battery information collector 3 by using the bleed resistor 122. In this embodiment, the controller 13 is configured to control the bleed switch 121 to be completely closed after each test of the working condition, and discharge the capacitor connected to the port 301 of the battery information collector 3 by using the bleed resistor 122. In this way, the controller 13 controls the bleed switch 121 to be closed, so that the bleed resistor 122 and the capacitor connected to the port 301 of the battery information collector 3 form a discharge loop, so as to discharge the voltage of the capacitor connected to the port 301 of the battery information collector 3, which is safe and reliable.

[0054] In this embodiment, the battery module 2 comprises a first electric core 202, a second electric core 203 and a third electric core. The gating branch 11 comprises a first gating branch 112, a second gating branch 113, a third gating branch and a fourth gating branch. One end of the first gating branch 112 is connected to the negative electrode of the first electric core 202, and the other end is connected to the battery information collector 3. One end of the second gating branch 113 is connected between the positive electrode of the first electric core 202 and the negative electrode of the second electric core 203, and the other end is connected to the battery information collector 3. One end of the third gating branch is connected between the positive electrode of the second electric core 203 and the negative electrode of the third electric core, and the other end is connected to the battery information collector 3. One end of the fourth gating branch is connected to the positive electrode of the third electric core, and the other end is connected to the battery information collector 3. The bleed branch 12 comprises a first bleed branch 123, a second bleed branch and a third bleed branch. The first bleed branch 123 is connected between the second gating branch 113 and the first gating branch 112. The second bleed branch is connected between the third gating branch and the first gating branch 112. The third bleed branch is connected between the fourth gating branch and the first gating branch 112. Figure 1In the illustrated embodiment, the plurality of pass-through switches 111 includes pass-through switches S0, S1, S2,..., Sn-1, Sn. The first gating branch 112 includes pass-through switch S0. The second gating branch 113 includes pass-through switch S1. The third gating branch includes pass-through switch S2. The fourth gating branch includes pass-through switch S3. The plurality of bleeder switches 121 includes bleeder switches K0, K1, K2,..., Kn-1, Kn. The plurality of bleeder resistors 122 includes bleeder resistors R0, R1, R2,..., Rn-1, Rn. The first bleeder branch 123 includes bleeder switch K0 and bleeder resistor R0. The second bleeder branch includes bleeder switch K1 and bleeder resistor R1. The third bleeder branch includes bleeder switch K2 and bleeder resistor R2.

[0055] In actual working condition tests, in some embodiments, the controller 13 can control at least two pass-through switches 111 in the plurality of pass-through switches 111 to be closed and opened once, and control all pass-through switches 111 to be closed and opened once, which can be regarded as a working condition test. The controller 13 can sequentially increase the serial numbers of the pass-through switches 111 to control two pass-through switches 111 to be closed, complete a plurality of working condition tests of two pass-through switches 111 being closed, and thus test the working condition of the port 301 of the battery information collector 3 to insert a cell 201 of the battery module 2.

[0056] First, the controller 13 can control two pass-through switches S0 and S1 to be closed and opened once, and control all pass-through switches S0, S1, S2,..., Sn-1, Sn to be closed and opened once, which can be regarded as a working condition test. After the working condition test, the controller 13 controls all bleeder switches K0, K1, K2,..., Kn-1, Kn to be closed, and uses the bleeder resistor R0 connected with the two pass-through switches S0 and S1 to discharge the capacitor connected with the port 301 of the battery information collector 3. In this process, the bleeder switch K0 is closed, the two pass-through switches S0 and S1 are connected with the bleeder resistor R0, and a bleeder loop is formed between the two pass-through switches S0 and S1 and the capacitor connected with the port 301 of the battery information collector 3, mainly using the bleeder resistor R0 to discharge.

[0057] After the second time, the controller 13 can also control the two passage switches S0, S2 to be closed and opened once, and control all the passage switches S0, S1, S2,..., Sn-1, Sn to be closed and opened once, which can be used as the n time working condition test. After the n time working condition test, the controller 13 controls all the bleed switches K0, K1, K2,..., Kn-1, Kn to be closed, and uses the bleed resistor Rn connected with the two passage switches S0, Sn to discharge the capacitor connected with the port 301 of the battery information collector 3. In this process, the bleed switch Kn is closed, so that the two passage switches S0, Sn are connected with the bleed resistor Rn, and the capacitor connected with the port 301 of the battery information collector 3 forms a discharge loop, mainly using the bleed resistor Rn to discharge.

[0058] Then, the controller 13 can also control the two passage switches S0, Sn to be closed and opened once, and control all the passage switches S0, S1, S2,..., Sn-1, Sn to be closed and opened once, which can be used as the n time working condition test. After the n time working condition test, the controller 13 controls all the bleed switches K0, K1, K2,..., Kn-1, Kn to be closed, and uses the bleed resistor Rn connected with the two passage switches S0, Sn to discharge the capacitor connected with the port 301 of the battery information collector 3. In this process, the bleed switch Kn is closed, so that the two passage switches S0, Sn are connected with the bleed resistor Rn, and the capacitor connected with the port 301 of the battery information collector 3 forms a discharge loop, mainly using the bleed resistor Rn to discharge.

[0059] Then, the controller 13 can also control the two passage switches S0, Sn to be closed and opened once, and control all the passage switches S0, S1, S2,..., Sn-1, Sn to be closed and opened once, which can be used as the n time working condition test. After the n time working condition test, the controller 13 controls all the bleed switches K0, K1, K2,..., Kn-1, Kn to be closed, and uses the bleed resistor Rn connected with the two passage switches S0, Sn to discharge the capacitor connected with the port 301 of the battery information collector 3. In this process, the bleed switch Kn is closed, so that the two passage switches S0, Sn are connected with the bleed resistor Rn, and the capacitor connected with the port 301 of the battery information collector 3 forms a discharge loop, mainly using the bleed resistor Rn to discharge.

[0060] Then, according to the sequence number of the path switch 111, the controller 13 can control the three path switches S0, S1, S2 to be closed and opened once, and control all the path switches S0, S1, S2,..., Sn-1, Sn to be closed and opened once, which can be used as a working condition test. After the working condition test, the controller 13 controls all the discharge switches K0, K1, K2,..., Kn-1, Kn to be closed, and discharges the capacitor connected to the port 301 of the battery information collector 3. Then, the controller 13 can control the three path switches S0, S1, S3 to be closed and opened once, and control all the path switches S0, S1, S2,..., Sn-1, Sn to be closed and opened once, which can be used as a working condition test. After the working condition test, the controller 13 controls all the discharge switches K0, K1, K2,..., Kn-1, Kn to be closed, and discharges the capacitor connected to the port 301 of the battery information collector 3. The above process is repeated until the test of all the three path switches 111 in the plurality of path switches 111 is completed.

[0061] Then, according to the sequence number of the path switch 111, the controller 13 can control the three path switches S0, S1, S2 to be closed and opened once, and control all the path switches S0, S1, S2,..., Sn-1, Sn to be closed and opened once, which can be used as a working condition test. After the working condition test, the controller 13 controls all the discharge switches K0, K1, K2,..., Kn-1, Kn to be closed, and discharges the capacitor connected to the port 301 of the battery information collector 3. Then, the controller 13 can control the three path switches S0, S1, S3 to be closed and opened once, and control all the path switches S0, S1, S2,..., Sn-1, Sn to be closed and opened once, which can be used as a working condition test. After the working condition test, the controller 13 controls all the discharge switches K0, K1, K2,..., Kn-1, Kn to be closed, and discharges the capacitor connected to the port 301 of the battery information collector 3. The above process is repeated until the test of all the three path switches 111 in the plurality of path switches 111 is completed.

[0062] In the hot plug test method of the embodiment, the controller 13 controls at least two gating branches 11 in the plurality of gating branches 11 to be closed and opened once, and controls all the gating branches to be closed and opened once, which is used as a working condition test and is repeated for multiple times, so as to simulate the human plug test, verify the hot plug capability of the battery collector 3 in all working conditions, improve the plug efficiency, shorten the verification time, improve the reliability of the product, and reduce the later version and maintenance cost.

[0063] The controller 13 of the embodiment can also be a host computer, which is mainly used to issue the control instructions of the on / off of the path switch 111 and the discharge switch 121. The battery information collector 3 can be connected with the battery module 2 and the controller 13. The battery information collector 3 is used to collect the battery information of the battery module 2 and transmit the data to the controller 13. It should be noted that when the number of channels is large, the time consumed by this method can be long. The software strategy can be changed or the plug test can be performed according to the related parameters of the product, which is not limited in the present application.

[0064] Other embodiments of the application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. It is intended that the specification and examples be considered as exemplary only, with the true scope and spirit of the application being indicated by the following claims.

[0065] It is to be understood that the application is not limited to the precise construction herein described and as shown in the attached drawings, and that various modifications and changes can be made by those skilled in the art without departing from the scope of the application. The scope of the application is to be indicated by the appended claims, rather than the description.

Claims

1. A hot-swap testing fixture, characterized in that, Connecting the battery module and the battery information collector, the hot-swap test fixture includes: Multiple selectable branches are connected to the battery module and the battery information collector; Multiple discharge branches, connected to the multiple gate branches; and A controller is connected to the plurality of gated branches and the plurality of discharge branches. The controller is used to first control at least two of the plurality of gated branches to close and open once, and then control all the gated branches to close and open once, as a working condition test to test the working condition of the battery cell of the battery module being hot-inserted into the port corresponding to the battery collector. After each working condition test, the controller is also used to control the discharge branch to close, so that the discharge branch discharges the capacitor connected to the port of the battery information collector.

2. The hot-swap testing fixture according to claim 1, characterized in that, The multiple selected branches include multiple access switches. The controller is used to control at least two of the access switches to close and open once, and to control all the access switches to close and open once, as one working condition test. Multiple working condition tests are performed according to the sequential number of the access switches, so as to complete all working conditions of the port hot-insertion of the battery corresponding to the battery cell of the battery information collector.

3. The hot-swap test fixture according to claim 1 or 2, characterized in that, The controller is used to close all the discharge branches after each operating condition test, so that the discharge branches discharge the capacitor connected to the port of the battery information collector.

4. The hot-swap test fixture according to claim 1 or 2, characterized in that, The battery module includes a first cell, a second cell, and a third cell; the selection branch includes a first selection branch, a second selection branch, a third selection branch, and a fourth selection branch. One end of the first selection branch is connected to the negative terminal of the first cell, and the other end is connected to the battery information collector. One end of the second selection branch is connected between the positive terminal of the first cell and the negative terminal of the second cell, and the other end is connected to the battery information collector. One end of the third selection branch is connected between the positive terminal of the second cell and the negative terminal of the third cell. One end of the fourth gate branch is connected to the positive terminal of the third cell, and the other end is connected to the battery information collector. The discharge branch includes a first discharge branch, a second discharge branch, and a third discharge branch. The first discharge branch is connected between the second gate branch and the first gate branch; the second discharge branch is connected between the third gate branch and the first gate branch; and the third discharge branch is connected between the fourth gate branch and the first gate branch. And / or The discharge branch includes a discharge switch and a discharge resistor connected to the discharge switch. The discharge switch is connected to the controller. The controller is used to control the discharge switch to close after each operating condition test and to discharge the capacitor connected to the port of the battery information collector using the discharge resistor.

5. The hot-swap test fixture according to claim 1, characterized in that, The multiple selection branches and the multiple discharge branches are integrated on the same circuit board.

6. A hot-plug testing method, characterized in that, A hot-swap test fixture is used to test the operation of a battery acquisition device hot-swapping a battery module; the hot-swap test fixture includes multiple gate branches, multiple discharge branches, and a controller, the controller being connected to the multiple gate branches and the multiple discharge branches; The hot-plug test method includes: The plurality of selection branches are provided for selecting the ports connecting the battery cells of the battery module and the battery information collector. Provide the plurality of discharge branches for discharging the capacitors connected to the ports of the battery information collector; and The controller is provided to first control at least two of the plurality of selected branches to close and open once, and then control all the selected branches to close and open once as a working condition test to test the working condition of the battery cell of the battery module being hot-inserted into the port corresponding to the battery collector, and to control the discharge branch to close after each working condition test, so that the discharge branch discharges the capacitor connected to the port of the battery information collector.

7. The hot-plug testing method according to claim 6, characterized in that, The plurality of gated branches include a plurality of path switches; the controller is used to control at least two of the plurality of gated branches to be turned on, in order to test the operating condition of the battery cell of the battery module being hot-inserted into the port corresponding to the battery collector, including: The controller is used to control at least two of the access switches to close and open once, and to control all the access switches to close and open once, as one working condition test. Multiple working condition tests are performed according to the sequential number of the access switches, so as to complete all working conditions of the battery information collector port hot-inserting the corresponding battery cell.

8. The hot-plug test method according to claim 6 or 7, characterized in that, The controller is used to close the discharge branch after each operating condition test, so that the discharge branch discharges the capacitor connected to the port of the battery information collector, including: The controller is also used to close all the discharge branches after each operating condition test, so that the discharge branches discharge the capacitor connected to the port of the battery information collector.

9. The hot-plug test method according to claim 6 or 7, characterized in that, The discharge branch includes a discharge switch and a discharge resistor connected to the discharge switch, the discharge switch being connected to the controller; the controller is used to control the discharge branch to close after each operating condition test, causing the discharge branch to discharge the capacitor connected to the port of the battery information collector, including: The controller is used to close the discharge switch after each operating condition test and to discharge the capacitor connected to the port of the battery information collector using the discharge resistor.

10. The hot-plug testing method according to claim 6, characterized in that, The multiple selection branches and the multiple discharge branches are integrated on the same circuit board.

Images