Battery offline test system, battery production line and test method

Abstract

The invention discloses a battery off-line test system, a battery production line and a test method.The battery off-line test system comprises a host and a test device, the host is used for responding to a test start signal, determining a test mode of a to-be-tested battery and sending a control instruction to the test device according to the test mode, receiving a test result sent by the test equipment; the test equipment is provided with a switching device, and each line between the test equipment and the battery is electrically connected through the switching device; the test equipment is used for controlling the switching device to connect or disconnect a circuit with the battery in response to the control instruction; and testing the battery based on the test mode, and in response to the test completion signal, sending a test result to the host. According to the technical scheme provided by the embodiment of the invention, the off-line test of the battery can be efficiently and accurately carried out.

Description

[0001] Description of the case

[0002] This application is a divisional application of a Chinese patent with an application date of October 10, 2023, application number 202311302822.0, and invention name “A battery off-line testing system, battery production line and testing method”. Technical Field

[0003] The present application relates to the field of battery production technology, and in particular to a battery off-line testing system, a battery production line and a testing method. Background Art

[0004] New energy batteries are being used more and more widely in life and industry. For example, new energy vehicles equipped with batteries have been widely used. In addition, batteries are also being increasingly used in areas such as energy storage.

[0005] When a battery is undergoing an End Of Line (EOL) test, it is usually necessary to adjust the test mode. In the related art, an operator manually connects lines to switch the test mode, which is time-consuming and prone to errors. Summary of the invention

[0006] In order to solve the above technical problems, the purpose of this application is to provide a battery off-line testing system, a battery production line and a testing method.

[0007] This application is implemented through the following technical solutions.

[0008] The first aspect of the present application provides a battery offline test system, including a host and a test device, wherein the host is used to respond to a test start signal, determine a test mode of a battery to be tested, send a control instruction to the test device according to the test mode, and receive a test result sent by the test device; a switch device is provided on the test device, and each line between the test device and the battery is electrically connected through the switch device; the test device is used to respond to the control instruction, control the switch device to connect or disconnect the line with the battery; and test the battery based on the test mode; and send the test result to the host in response to a test completion signal.

[0009] In the technical solution of the embodiment of the present application, the host can determine the test mode of the battery to be tested in response to the test start signal, and send a control instruction to the test device according to the test mode, so that the test device tests the battery to be tested. After the test device tests the battery based on the test mode, it will respond to the test completion signal and send the test result to the host. The host is also used to receive the test result sent by the test device. On this basis, a switch device is provided on the test device, and each line between the test device and the battery is electrically connected through the switch device, that is, the wiring harness corresponding to each line of the test device and the battery is connected. The test device is used to respond to the control instruction to control the connection or disconnection of the switch device with the line between the battery, that is, the test device responds to the control instruction to connect the line required by the test mode through the switch device, and disconnect the line not required by the test mode through the switch device. Such a setting eliminates the operator's manual connection or disconnection of the line when switching the test mode. On the one hand, it saves time, thereby improving the test efficiency of the test system; on the other hand, the use of automatic control of the connection or disconnection of the switch device can reduce the probability of line connection errors.

[0010] In some embodiments of the present application, there are multiple switch devices and circuits, and the switch devices and circuits correspond one to one, wherein: the host is also used to determine a group of circuits to be connected between the test device and the battery according to the test mode, and the connection order corresponding to the group of circuits; determine a group of switch devices that control the connection of a group of circuits; generate control instructions based on a group of switch devices and the connection order; and send the control instructions to the test device; the test device is also used to control the connection of a group of switch devices according to the connection order based on the control instructions; and when a group of switch devices is connected, control the remaining switch devices to be disconnected. Here, after the host determines the group of switch devices to be connected and the connection order, it sends it to the test device. The test device responds to the control instructions to connect the circuits required by the test mode through the switch devices, and disconnect the circuits not required by the test mode through the switch devices. Such a setting eliminates the need for the operator to manually connect or disconnect the circuits when switching the test mode.

[0011] In some embodiments of the present application, the circuit includes a first wiring harness electrically connected to the test equipment, and a second wiring harness electrically connected to the battery; there are at least two first wiring harnesses, and at least two first wiring harnesses are electrically connected to the second wiring harnesses through switch devices; or, there are at least two second wiring harnesses, and at least two second wiring harnesses are electrically connected to the first wiring harness through switch devices. Here, at least two first wiring harnesses are electrically connected to the second wiring harnesses through switch devices, respectively, so that the second wiring harness can be reused in different test modes. Correspondingly, at least two second wiring harnesses are electrically connected to the first wiring harness through switch devices, respectively, so that the first wiring harness can be reused in different test modes, thereby saving wiring harnesses and materials, and reducing the space occupied by the wiring harness, thereby reducing the volume of the test equipment.

[0012] In some embodiments of the present application, the switch device is a relay or a contactor. Here, the relay as a switch device has the advantages of high mechanical strength, stable structure, and not easily affected by external interference, while the contactor as a control device has the advantages of long service life, stability and reliability, and easy maintenance.

[0013] In some embodiments of the present application, the offline test system of the battery also includes a connection device, the connection device includes a first interface and a second interface connected in a one-to-one correspondence, the first interface is detachably connected to the test device, the second interface is detachably connected to the battery, and the test device and the battery are electrically connected through the first interface and the second interface. Here, by setting the first interface to be detachably connected to the test device and the second interface to be detachably connected to the battery, the line can be easily maintained, thereby improving the convenience of use of the offline test system of the battery.

[0014] In some embodiments of the present application, the offline test system of the battery also includes an identifier, which is electrically connected to the host, wherein: the identifier is used to obtain the type parameters of the battery and send the type parameters to the host; the host is used to receive the type parameters sent by the identifier and determine the test mode of the battery according to the type parameters. Here, by setting the identifier, the type parameters of the battery can be easily obtained, so that the host can determine the test mode of the battery according to the type parameters, thereby controlling the test equipment to adjust the switch device according to the test mode of the battery.

[0015] In some embodiments of the present application, the battery offline test system further includes a storage device, which is used to store a wiring harness and / or an operating tool, and the wiring harness is used to form a circuit. Here, the storage device can store or organize the wiring harness and the operating tool, etc., so as to make the battery offline test system more tidy, and can also provide protection for the wiring harness stored therein, reduce the possibility of damage to the wiring harness, and improve safety.

[0016] In some embodiments of the present application, the battery offline test system also includes an interactive device, which is electrically connected to the host, and the interactive device includes at least one or more of an input component, a display component, and an alarm component. Here, the input component in the interactive device can facilitate the operator to manipulate the host and / or the test device, and the display component and the alarm component can timely feedback the test-related information to the operator, and can remind the operator to handle the test in a timely manner when a fault occurs.

[0017] In some embodiments of the present application, the battery offline test system further includes a carrier, and the test equipment and the interactive equipment are connected to the carrier. Here, the carrier can facilitate the placement of the test equipment and the interactive equipment to provide an equipment layout that is convenient for the operator to operate.

[0018] In some embodiments of the present application, the host is further configured to send a transfer instruction to the transfer device in response to receiving the test result, so that the transfer device transfers the battery to the target workstation according to the transfer instruction.

[0019] The second aspect of the present application provides a battery production line, comprising production equipment, transfer equipment and an off-line test system for the battery of any one of the first aspects, the production equipment being used to produce batteries to be tested, the transfer equipment being used to take the batteries to be tested out of the production equipment and place them in the off-line test system for the battery, or, to take the batteries that have completed the test out of the off-line test system and transfer them to a target workstation.

[0020] The third aspect of the present application provides a battery offline testing method, which is applied to a battery offline testing system, including: a host responds to a test start signal, determines a test mode of a battery to be tested, and sends a control instruction to a test device according to the test mode; the test device responds to the control instruction, controls a switch device to connect or disconnect a line with the battery, and tests the battery based on the test mode, and sends the test result to the host; the host receives the test result sent by the test device.

[0021] In the technical solution of the embodiment of the present application, since a switching device is provided on the test equipment, after the host determines the test mode required for the battery to be tested, the host indirectly controls the test equipment to connect the switching device required to be connected for the test mode based on the control instruction by sending a control instruction corresponding to the test mode to the test equipment. This avoids the technical problem of reduced test efficiency due to plugging and unplugging lines when switching different test modes for different types of batteries, and also reduces the probability of line connection errors caused by manual plugging and unplugging of wiring harnesses. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Moreover, the same reference numerals are used throughout the drawings to represent the same components. In the drawings:

[0023] Figure 1 A schematic diagram of the composition of a battery offline test system provided in an embodiment of the present application;

[0024] Figure 2 A schematic diagram of the structure of a test device in a battery offline test system provided in an embodiment of the present application;

[0025] Figure 3 A schematic diagram of the connection between a second wiring harness and a plurality of first wiring harnesses in a battery offline test system provided in an embodiment of the present application;

[0026] Figure 4 A schematic diagram of the connection between a first wiring harness and a plurality of second wiring harnesses in a battery offline test system provided in an embodiment of the present application;

[0027] Figure 5 A schematic diagram of the structure of the connection device in the offline test system of the battery provided in the embodiment of the present application;

[0028] Figure 6 A schematic diagram of the structure of a battery offline test system provided in an embodiment of the present application (axonometric view);

[0029] Figure 7 Provided in the embodiments of this application Figure 6 A partial enlarged view of point A in the middle;

[0030] Figure 8 A schematic diagram of the structure of a battery offline test system provided in an embodiment of the present application (front view);

[0031] Fig. 9 A schematic diagram of the structure of the battery offline test system provided in the embodiment of the present application (left view);

[0032] Fig.10 A schematic diagram of the structure of a battery offline test system provided in an embodiment of the present application (top view);

[0033] Fig.11 A schematic flow chart of an off-line testing method for a battery provided in an embodiment of the present application;

[0034] Fig.12 A schematic flow chart of an exemplary battery end-of-line testing method provided in an embodiment of the present application.

[0035] Description of Reference Numerals

[0036] 1-host; 11-power box; 2-test equipment; 21-switching device; 3-line; 31-first wiring harness; 32-second wiring harness; 4-connecting device; 41-box body; 42-first interface; 43-second interface; 5-identifier; 6-storage device; 61-storage cabinet; 62-reel; 63-work tray; 7-interactive device; 71-input component; 72-display component; 73-alarm component; 8-carrying frame; 81-support column; 82-support beam; 83-workbench; 84-hanging bracket; 85-protective net; 9-battery. DETAILED DESCRIPTION

[0037] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution 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.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification of this application and the above-mentioned drawings and any variations thereof are intended to cover non-exclusive inclusions.

[0039] In the description of the embodiments of the present application, the technical terms "first", "second", "third", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0040] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0041] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0042] In the description of the embodiments of the present application, the orientation or position relationship indicated by technical terms such as "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the orientation or position relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed, operated or used in a specific orientation. Therefore, they should not be understood as limitations on the embodiments of the present application.

[0043] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0044] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, the technical term "contact" should be understood in a broad sense, and may be direct contact or contact through an intermediate medium layer. It may be contact with essentially no interaction force between the two contacting parties, or it may be contact with interaction force between the two contacting parties.

[0045] Below, this application is described in detail.

[0046] In the production and manufacturing process of batteries, especially when conducting off-line testing on battery packs, different battery packs require different tests and there are multiple corresponding test modes. In different test modes, the electrical connection methods between the test equipment and the battery pack are not the same. In the related art, a wiring cabinet is set up with multiple interfaces. The operator selects the corresponding wiring harness and connects it to the interface according to the test mode corresponding to the battery pack. This process takes a lot of time, affecting the test efficiency, and the operator is prone to errors when performing manual plugging and unplugging operations, affecting the test results.

[0047] In view of the problems existing in the above-mentioned related technologies, this application proposes a battery offline testing system. Figure 1 and Figure 2The off-line test system of the battery includes a host 1 and a test device 2. The host 1 is used to respond to a test start signal, determine the test mode of the battery 9 to be tested, send a control instruction to the test device 2 according to the test mode, and receive the test result sent by the test device 2; a switch device 21 is set on the test device 2, and each line 3 between the test device 2 and the battery 9 is electrically connected through the switch device 21; the test device 2 is used to respond to the control instruction, control the switch device 21 to connect or disconnect the line 3 with the battery 9; and test the battery 9 based on the test mode; and send the test result to the host 1 in response to a test completion signal.

[0048] In the embodiment of the present application, battery 9 may refer to a battery cell or a battery pack, etc. Taking battery 9 as an example, battery 9 is composed of multiple battery cells connected in series, in parallel or in mixed connection. Battery 9 may also include a busbar component for realizing electrical connection between multiple battery cells.

[0049] In the embodiment of the present application, the battery cell may be a secondary battery, which refers to a battery cell that can be used continuously by activating the active material by charging after the battery cell is discharged. The battery cell may be a lithium-ion battery cell, a sodium-ion battery cell, a sodium-lithium-ion battery cell, a lithium metal battery cell, a sodium metal battery cell, a lithium-sulfur battery cell, a magnesium-ion battery cell, a nickel-hydrogen battery cell, a nickel-cadmium battery cell, a lead-acid battery cell, etc., and the embodiment of the present application does not limit this.

[0050] In an embodiment of the present application, the host 1 can be a computer, an industrial computer, etc. The host 1 can respond to a test start signal, determine the test mode of the battery 9 to be tested, send control instructions to the test device 2 according to the test mode, and receive the test results sent by the test device 2.

[0051] In an embodiment of the present application, the test device 2 may include multiple components, which are used to test different performances of the battery 9. For example, the test device 2 includes a module total voltage test component, a battery cell voltage test component, a module temperature test component, a module pressure difference test component, a module internal resistance test component, an insulation withstand voltage test component, etc. The embodiment of the present application does not limit this.

[0052] In an embodiment of the present application, the switching device 21 refers to a device connected in the line 3, which can connect or disconnect the electrical connection between the test device 2 and the battery 9 at both ends of the line 3. When the test device 2 and the battery 9 are connected by the switching device 21 through the electrical connection of a certain line 3, electric energy and / or signals can be transmitted between the test device 2 and the battery 9 through the line 3; when the electrical connection between the test device 2 and the battery 9 through a certain line 3 is disconnected by the switching device 21, electric energy and / or signals will not be able to be transmitted between the test device 2 and the battery 9 through the line 3.

[0053] In the offline testing system for batteries provided in the embodiment of the present application, the host 1 can determine the test mode of the battery 9 to be tested in response to a test start signal, and send a control instruction to the test device 2 according to the test mode, so that the test device 2 tests the battery 9 to be tested. After the test device 2 tests the battery 9 based on the test mode, it will respond to a test completion signal and send the test result to the host 1. The host 1 is also used to receive the test result sent by the test device 2.

[0054] On this basis, a switch device 21 is provided on the test equipment 2, and each line 3 between the test equipment 2 and the battery 9 is electrically connected through the switch device 21, that is, the wiring harness corresponding to each line 3 of the test equipment 2 and the battery 9 is connected, and the test equipment 2 is used to respond to the control instruction to control the connection or disconnection of the switch device 21 with the line 3 between the battery 9, that is, the test equipment 2 responds to the control instruction to connect the line 3 required for the test mode through the switch device 21, and disconnect the line 3 not required for the test mode through the switch device 21.

[0055] Such a configuration eliminates the need for the operator to manually connect or disconnect line 3 when switching the test mode. On the one hand, this saves time, thereby improving the test efficiency of the battery offline test system. On the other hand, the use of automatic control of the connection or disconnection of the switch device 21 can reduce the probability of connection errors in line 3.

[0056] Reference Figure 2 In some embodiments of the present application, there are multiple switch devices 21 and lines 3, and the switch devices 21 and lines 3 correspond one to one, wherein: the host 1 is also used to determine a group of lines 3 to be connected with the test device 2 and a connection order corresponding to a group of lines 3 according to the test mode; determine a group of switch devices 21 that control the connection of a group of lines 3; generate a control instruction based on a group of switch devices 21 and the connection order; and send the control instruction to the test device 2; the test device 2 is also used to control the connection of a group of switch devices 21 according to the connection order based on the control instruction; and when the switch device 21 is connected, control the remaining switch devices 21 to be disconnected.

[0057] Since different types of batteries 9 correspond to different items that need to be tested, that is, there are differences in the test modes. Therefore, after the host 1 determines the test mode required for the battery 9 to be tested, it is also necessary to determine a group of lines 3 that need to be connected to the battery 9 to be tested when the test device 2 performs the test mode on the battery 9 to be tested. Since there are multiple test interfaces corresponding to components for testing different performances of the battery 9 on the test device 2, different test interfaces are connected to different lines 3. Therefore, when the test mode corresponding to the test device 2 needs to use a certain test interface according to the test sequence, the corresponding line 3 needs to be connected.

[0058] On this basis, after determining the line 3 that needs to be connected between the test equipment 2 and the battery 9 to be tested, the host 1 determines a group of switching devices 21 that control the connection of a group of lines 3, and one switching device 21 controls the connection or disconnection of one line 3; then the host 1 can generate a control instruction based on the identification and connection sequence of a group of switching devices 21 and send it to the test equipment 2.

[0059] Reference Figure 3 and Figure 4 In some embodiments of the present application, the circuit 3 includes a first wiring harness 31 electrically connected to the test equipment 2, and a second wiring harness 32 electrically connected to the battery 9; there are at least two first wiring harnesses 31, and at least two first wiring harnesses 31 are electrically connected to the second wiring harness 32 through the switching device 21 respectively; or, there are at least two second wiring harnesses 32, and at least two second wiring harnesses 32 are electrically connected to the first wiring harness 31 through the switching device 21 respectively.

[0060] In the embodiment of the present application, line 3 is formed by at least two wire harnesses connected to each other, wherein the wire harness may be a low-voltage wire harness, a high-voltage wire harness, etc. The wire harness may be a wire harness for transmitting electric energy or a wire harness for transmitting signals.

[0061] In the embodiment of the present application, at least two first wiring harnesses 31 can be connected to a second wiring harness 32 through the switch device 21, and continue to refer to Figure 3 The two first harnesses 31 are respectively a charging harness and a discharging harness. The charging harness is used to transmit electric energy from the test equipment 2 to the battery 9, and the discharging harness is used to transmit electric energy from the battery 9 to the test equipment 2. The discharging harness and the charging harness are respectively connected to the same second harness 32 through the switching device 21.

[0062] On this basis, when the test equipment 2 needs to charge the battery 9, the host 1 controls the switch device 21 connected to the charging harness to connect the charging harness and the corresponding second harness 32, and controls the switch device 21 connected to the discharge harness to disconnect the discharge harness and the second harness 32; accordingly, when the test equipment 2 needs to discharge the battery 9, the host 1 controls the switch device 21 connected to the discharge harness to connect the discharge harness and the corresponding second harness 32, and controls the switch device 21 connected to the charging harness to disconnect the charging harness and the second harness 32.

[0063] In the embodiment of the present application, at least two second wiring harnesses 32 may be connected to one first wiring harness 31 through the switch device 21, and further reference is made to Figure 4 The two second wiring harnesses 32 are respectively a module voltage wiring harness and a cell voltage wiring harness. The module voltage wiring harness is used to test the total voltage of the battery 9, and the cell voltage wiring harness is used to test the voltage of a single cell. The module voltage wiring harness and the cell voltage wiring harness are connected to the same first wiring harness 31.

[0064] On this basis, when the test equipment 2 is needed to test the total voltage of the battery 9, the host 1 controls the switch device 21 connected to the module voltage harness to connect the module voltage harness and the corresponding first harness 31, and controls the switch device 21 connected to the cell voltage harness to disconnect the cell voltage harness and the first harness 31; accordingly, when the test equipment 2 is needed to test the voltage of a single cell, the host 1 controls the switch device 21 connected to the module voltage harness to disconnect the module voltage harness and the corresponding first harness 31, and controls the switch device 21 connected to the cell voltage harness to connect the cell voltage harness and the first harness 31.

[0065] In the battery offline test system provided in the embodiment of the present application, at least two first wiring harnesses 31 are electrically connected to the second wiring harness 32 through the switching device 21, respectively, so that the second wiring harness 32 can be reused in different test modes. Correspondingly, at least two second wiring harnesses 32 are electrically connected to the first wiring harness 31 through the switching device 21, respectively, so that the first wiring harness 31 can be reused in different test modes, thereby saving wiring harnesses, saving materials, and reducing the space occupied by the wiring harnesses, thereby reducing the volume of the test equipment 2.

[0066] In some implementations of the present application, the switch device 21 is a relay or a contactor.

[0067] In the embodiment of the present application, the relay may be an electromagnetic relay, a voltage relay, a time relay, a pressure relay, a solid-state relay, etc., and the embodiment of the present application does not limit this.

[0068] In the embodiment of the present application, the contactor may be an electromagnetic contactor or an electro-pneumatic contactor, and the contactor may be a single-pole contactor or a multi-pole contactor, which is not limited in the embodiment of the present application.

[0069] In the battery offline test system provided in the embodiment of the present application, the relay as the switching device 21 has the advantages of high mechanical strength, stable structure, and not susceptible to external interference, and the contactor as the control device has the advantages of long service life, stability and reliability, and easy maintenance.

[0070] Reference Figure 5 In some embodiments of the present application, the battery offline test system also includes a connecting device 4, which includes a first interface 42 and a second interface 43 that are connected one to one. The first interface 42 is detachably connected to the test device 2, and the second interface 43 is detachably connected to the battery 9 to electrically connect the test device 2 and the battery 9.

[0071] In an embodiment of the present application, the connection device 4 can be a wiring harness adapter box, which includes a box body 41 and an interface arranged on the side wall of the box body 41. The wiring harness can be plugged in and out relative to the interface and fixed to the connection device 4 by means of snap-on connection, fastener connection, etc.

[0072] Specifically, the interface includes a first interface 42 and a second interface 43. The wiring harness of the test device 2 is connected to the connecting device 4 through the first interface 42, and then connected to the battery 9 through the wiring harness connected to the corresponding second interface 43. When the wiring harness needs maintenance, it can be easily removed from the connecting device 4 for maintenance.

[0073] The battery offline test system provided in the embodiment of the present application can facilitate maintenance of the line 3 by providing a first interface 42 for detachably connecting the test equipment 2 and a second interface 43 for detachably connecting the battery 9, thereby improving the ease of use of the battery offline test system.

[0074] Reference Figure 6 , Figure 7 and Figure 8 In some embodiments of the present application, the battery offline testing system also includes an identifier 5, which is electrically connected to the host 1, wherein: the identifier 5 is used to obtain the type parameters of the battery 9 and send the type parameters to the host 1; the host 1 is used to receive the type parameters sent by the identifier 5, and determine the test mode of the battery 9 according to the type parameters.

[0075] In the embodiment of the present application, the identifier 5 can be a camera, a barcode scanner, a radio frequency sensor, an infrared sensor, etc. For example, the identifier 5 is a camera, which can collect image information of the battery 9, and the host 1 determines the test mode required for the battery 9 according to the image information.

[0076] For another example, the identifier 5 is a barcode scanner, and each battery 9 is provided with an identifiable QR code, dot matrix code, etc. The host 1 determines the test mode required for the battery 9 according to the information contained in the QR code or dot matrix code.

[0077] The battery offline testing system provided in the embodiment of the present application can conveniently obtain the type parameters of the battery 9 by setting the identifier 5, so that the host 1 can determine the test mode of the battery 9 according to the type parameters, thereby controlling the test equipment 2 to adjust the switch device 21 according to the test mode of the battery 9.

[0078] Reference Figure 6 , Figure 7 , Figure 8 and Fig.10 In some embodiments of the present application, the battery off-line testing system further includes a storage device 6 , which is used to store a wiring harness and / or an operating tool, and the wiring harness is used to form a circuit 3 .

[0079] In an embodiment of the present application, the storage device 6 may include a storage cabinet 61, which has a storage space. Idle or spare wiring harnesses can be stored in the storage space of the storage cabinet 61. The storage cabinet 61 is set at the test equipment 2 to facilitate the operator to quickly take and place the wiring harnesses.

[0080] In an embodiment of the present application, the storage device 6 may further include a cable reel 62. The wiring harness connected between the test device 2 and the battery 9 may be arranged on the cable reel 62. The cable reel 62 may be retracted to retract the wiring harness therein to prevent redundant wiring harnesses from being exposed, thereby providing protection for the wiring harness. The cable reel 62 may be a manual cable reel or an electric cable reel, and the embodiment of the present application does not impose any limitation on this.

[0081] In the embodiment of the present application, the storage device 6 can also be a work tray 63, which can be used to place operating tools commonly used by the operator, such as screwdrivers, insulating gloves, etc., so that the operator can quickly take and place the operating tools.

[0082] In the battery offline test system provided in the embodiment of the present application, the storage device 6 can store or organize the wiring harness and operating tools, etc. to make the battery offline test system more tidy, and can also provide protection for the wiring harness etc. stored therein, reduce the possibility of damage to the wiring harness, and improve safety.

[0083] Reference Figure 6 , Figure 7 and Figure 8 In some embodiments of the present application, the battery offline test system also includes an interactive device 7, which is electrically connected to the host 1. The interactive device 7 includes at least one or more of an input component 71, a display component 72, and an alarm component 73.

[0084] In an embodiment of the present application, the input component 71 can be a keyboard, a workstation button, a touchpad, a recording device, etc., wherein the keyboard can facilitate the operator to input information to the host 1 in order to operate the host 1, and the workstation button can be used to send a start signal or a stop signal to the host 1, etc. The host 1 responds to the stop signal to pause the test of the current battery 9 by the test device 2.

[0085] In the embodiment of the present application, the display component 72 can be a display, an indicator light, etc. The display can conveniently display the test-related information, operation interface, etc. on the host 1 to the operator, and the indicator light can be used to prompt the test conditions, such as starting the test, pausing the test, completing the test, etc.

[0086] In an embodiment of the present application, the alarm component 73 can issue an alarm to the operator in the event of a test failure, etc. The alarm component 73 may include a warning light, such as a three-color warning light, which can emit a conspicuous light beam to prompt the operator. The alarm component 73 may also include a buzzer, which can emit a buzzing sound to prompt the operator.

[0087] In the offline test system for batteries provided in the embodiment of the present application, the input component 71 in the interactive device 7 can facilitate the operator to control the host 1 and / or the test device 2, and the display component 72 and the alarm component 73 can promptly feedback the test-related information to the operator and remind the operator to handle the problem in a timely manner when a test failure occurs.

[0088] Reference Figure 6 , Figure 8 , Fig. 9 and Fig.10 In some embodiments of the present application, the battery offline testing system further includes a carrier frame 8 , and the testing device 2 and the interactive device 7 are connected to the carrier frame 8 .

[0089] In the embodiment of the present application, the load-bearing frame 8 may include a support column 81 and a support beam 82. The support column 81 is arranged vertically, and the support beam 82 is arranged horizontally. The support beam 82 is fixedly connected to the upper end of the support column 81. The support column 81 and the support beam 82 may be connected by clamping, welding, fasteners, etc. In order to improve the connection strength between the two, a cable-stayed beam may be arranged between the support column 81 and the support beam 82 to form a truss structure together.

[0090] In the embodiment of the present application, the carrier frame 8 may further include a workbench 83, which is disposed in a truss structure formed by connecting the support column 81 and the support beam 82. The workbench 83 may be used to place the battery 9 to be tested to facilitate operation by the operator.

[0091] In an embodiment of the present application, the support frame 8 may further include a hanger 84, which is fixedly connected to the side of the support beam 82 facing the workbench 83. The hanger 84 is arranged above or to the side of the workbench 83, and the interactive device 7, etc. can be fixed on the hanger 84 to facilitate user operation.

[0092] For example, the first hanger is arranged above the workbench 83, and the first hanger is provided with the connection device 4, the work station button, the work tray 63, the three-color warning light, the power box 11, the host 1, etc., and the cable reel 62 is connected to the support beam 82 and is located on the side of the first hanger. Among them, the power box 11 can be an uninterruptible power supply (UPS) for providing stable power supply to the host 1 so that the host 1 can run stably.

[0093] For example, the second hanger is arranged on the side of the workbench 83, and a display component 72, a keyboard, and an identifier 5 are arranged on the second hanger. The display component 72, the identifier 5, etc. on the second hanger facilitate the operator to operate.

[0094] It should be noted that the battery offline testing system of the present application can be equipped with multiple workbenches 83 to test multiple batteries 9. Accordingly, each workbench 83 is correspondingly provided with a first hanger, and a main unit 1, a workstation button, etc. connected to the first hanger. The second hanger can be set at the entrance of the truss structure, and a corresponding identifier 5 is provided on the second hanger corresponding to each workbench 83.

[0095] In the embodiment of the present application, the support frame 8 may further include a protective net 85, which is disposed on the outside of the truss structure and may provide protection for the offline test system of the battery.

[0096] In the battery offline testing system provided in the embodiment of the present application, the carrier 8 can facilitate the placement of the testing device 2 and the interactive device 7 to provide a device layout that is convenient for the operator to operate.

[0097] In some embodiments of the present application, the host 1 is further configured to send a transfer instruction to the transfer device in response to receiving the test result, so that the transfer device transfers the battery 9 to the target workstation according to the transfer instruction.

[0098] An embodiment of the present application provides a battery offline test system, including a host 1 and a test device 2, wherein the host 1 is used to respond to a test start signal, determine the test mode of the battery 9 to be tested, send a control instruction to the test device 2 according to the test mode, and receive the test result sent by the test device 2; a switch device 21 is set on the test device 2, and each line 3 between the test device 2 and the battery 9 is electrically connected through the switch device 21; the test device 2 is used to respond to the control instruction, control the switch device 21 to connect or disconnect the line 3 between the battery 9; and test the battery 9 based on the test mode; in response to a test completion signal, the test result is sent to the host 1; the above implementation scheme eliminates the need for the operator to manually connect or disconnect the line when switching the test mode. On the one hand, time is saved, thereby improving the test efficiency of the test system; on the other hand, the use of automatic control of the connection or disconnection of the switch device can reduce the probability of line connection errors.

[0099] In addition, an embodiment of the present application also provides a battery production line, which includes production equipment, transfer equipment and a battery offline testing system. The production equipment is used to produce batteries 9 to be tested, and the transfer equipment is used to take out the batteries 9 to be tested from the production equipment and place them in the battery offline testing system, or, to take out the tested batteries 9 from the offline testing system and transfer them to the target workstation.

[0100] In an embodiment of the present application, the production equipment is used to produce battery 9. For example, the production equipment may be an assembly device for assembling battery cells in a housing, or the production equipment may be a welding device for connecting multiple battery cells in a housing. Depending on the process sequence, the production equipment has multiple possible forms.

[0101] In the embodiments of the present application, the transfer equipment has many possible forms. For example, the transfer equipment is a conveyor belt, which has a simple structure and high transportation efficiency. For another example, the transfer equipment is an arm-type robot, which can perform more complex operations.

[0102] In the embodiment of the present application, there are many possibilities for the target station. For example, the target station may be an assembly station for the battery 9. Specifically, the cover in the outer shell is not installed before the test, and the battery 9 that has completed the test will be transferred by the transfer equipment to the target position for installation of the cover. For another example, the target station is a testing station, such as a vibration test, a high temperature test, etc. For another example, the target station is a recycling station. When the test result of the battery 9 is unqualified, the transfer equipment will transfer it to the recycling station.

[0103] Based on the above embodiment, in another embodiment of the present application, a battery offline test method is provided, which is applied to a battery offline test system, referring to Figure 1 The battery offline test system includes a host 1 and a test device 2. Fig.11 The present invention provides a schematic flow chart of a battery offline testing method according to an embodiment of the present invention. The specific method includes the following steps S101 to S103:

[0104] Step S101: In response to a test start signal, the host determines a test mode of a battery to be tested, and sends a control instruction to a test device according to the test mode.

[0105] In the embodiment of the present application, the host 1 determines the test mode of the battery 9 to be tested in response to the test start signal, and sends a control instruction to the test device 2 according to the test mode.

[0106] In the embodiment of the present application, the test start signal can be sent by the lower computer or programmable logic controller (PLC) to the host 1. When the battery 9 to be tested is placed on the test station, the lower computer or PLC sends a test start signal to the host 1 to start testing the battery 9 to be tested.

[0107] In the present application examples, reference Figure 7The battery offline test system also includes an identifier 5, which is electrically connected to the host 1 to determine the test mode of the battery to be tested, including: the identifier 5 obtains the type parameters of the battery and sends the type parameters to the host 1; the host 1 receives the type parameters sent by the identifier 5, and determines the test mode of the battery according to the type parameters.

[0108] Specifically, after receiving the test start signal, the host 1 can send an instruction to obtain type parameters to the identifier 5 because it is electrically connected to the identifier 5. After receiving the instruction, the identifier 5 obtains the type parameters of the battery 9 to be tested according to the instruction, and then sends the obtained type parameters to the host 1. After receiving the type parameters sent by the identifier 5, the host 1 determines the test mode required for the battery 9 to be tested according to the type parameters.

[0109] In the embodiment of the present application, the type parameter is the part number or component number of the battery 9. Exemplarily, the type parameter is a part number (PN) code.

[0110] In the present application examples, reference Figure 2 , there are multiple switch devices 21, there are multiple lines 3, the switch devices 21 and the lines 3 correspond one to one, and the host sends a control instruction to the test device 2 according to the test mode, including: the host determines a group of lines 3 to be connected between the test device 2 and the battery 9 according to the test mode, and a connection sequence corresponding to a group of lines 3; determines a group of switch devices 21 that control the connection of a group of lines 3; the host 1 generates a control instruction based on a group of switch devices 21 and the connection sequence; and sends the control instruction to the test device 2.

[0111] Specifically, different types of batteries 9 correspond to different items that need to be tested, that is, there are differences in the test modes. Therefore, after the host 1 determines the test mode required by the battery 9 to be tested according to the type parameters sent by the identifier 5, it is also necessary to determine a group of lines 3 that need to be connected to the battery 9 to be tested when the test device 2 performs the test mode on the battery 9 to be tested. Since there are multiple test interfaces corresponding to components for testing different performances of the battery 9 on the test device 2, different test interfaces are connected to different lines 3. Therefore, when the test mode corresponding to the test device 2 needs to use a certain test interface according to the test sequence, the corresponding line 3 needs to be connected.

[0112] Exemplarily, the test mode corresponding to the first battery 9 to be tested requires the use of the P, Q and O test interfaces on the test device 2. At this time, the lines 3 corresponding to the P, Q and O test interfaces need to be connected between the test device 2 and the first battery 9, and if the test sequence is to use the P test interface first, then the Q test interface, and finally the O test interface, at this time, the lines 3 corresponding to different test interfaces need to be connected in sequence according to the test sequence of first connecting the line 3 corresponding to the P test interface, then connecting the line 3 corresponding to the Q test interface, and finally connecting the line 3 corresponding to the O test interface.

[0113] In another optional embodiment, sometimes there is a need to use multiple test interfaces on the test device 2 at the same time. Exemplarily, first connect the line 3 corresponding to the P test interface and the line 3 corresponding to the Q test interface at the same time, then connect the line 3 corresponding to the P test interface and the line 3 corresponding to the O test interface at the same time, and finally connect the line 3 corresponding to the Q test interface and the line 3 corresponding to the O test interface at the same time.

[0114] In an embodiment of the present application, after determining that a line 3 needs to be connected between the test device 2 and the battery 9 to be tested, the host 1 determines a group of switching devices 21 that control the connection of a group of lines 3, and one switching device 21 controls the connection or disconnection of one line 3; the host 1 can generate a control instruction based on the identification and connection sequence of a group of switching devices 21 and send it to the test device 2.

[0115] Step S102: The testing device controls the switch device to connect or disconnect the line with the battery in response to the control instruction, and tests the battery based on the test mode, and sends the test result to the host.

[0116] In an embodiment of the present application, after the host 1 sends a control instruction to the test device 2 according to the test mode, the test device 2 responds to the control instruction, controls the switch device 21 to connect or disconnect the line 3 between the battery 9, and tests the battery 9 based on the test mode, and sends the test results to the host 1.

[0117] In an embodiment of the present application, the test device 2 controls the switch device 21 to connect or disconnect the line 3 between the battery 9, including: the test device 2 controls the connection of a group of switch devices 21 according to the connection sequence based on the control instruction, so that a group of lines 3 to be connected with the battery 9 are connected according to the connection sequence; and when a group of switch devices 21 are connected, the remaining switch devices 21 are controlled to be disconnected.

[0118] Specifically, after the test device 2 receives the control instruction sent by the host 1, since the control instruction carries the identification of a group of switch devices 21 that need to be connected between the test device 2 and the battery 9, as well as the connection sequence, the test device 2 can control the connection of a group of switch devices 21 according to the connection sequence, and at the same time, when the switch device 21 is connected, control the remaining switch devices 21 to be disconnected.

[0119] Exemplarily, the test device 2 includes a total of 5 test interfaces, namely P, Q, O, M and N test interfaces. The lines 3 corresponding to the P, Q, O, M and N test interfaces are respectively controlled by P1, Q1, O1, M1 and N1 switch devices 21. The control instruction includes a group of switch devices 21 that need to be connected, namely P1, Q1 and O1. At this time, if the connection sequence is to connect the switch devices 21P1 and Q1 first, then, among the P1, Q1, O1, M1 and N1 switch devices 21, except P1 and Q1, O1, M1 and N1 need to be disconnected.

[0120] Step S103: The host receives the test result sent by the test device.

[0121] In the embodiment of the present application, after the test device 2 sends the test result to the host 1 , the host 1 receives the test result sent by the test device 2 .

[0122] Specifically, the test device 2 performs an offline test on the battery 9 to be tested based on the test mode, obtains the test result, and sends the test result to the host 1 , and the host 1 receives the test result sent by the test device 2 .

[0123] In an embodiment of the present application, the testing device 2 sends the test result to the host 1 in response to the test completion signal; the host 1 sends a transfer instruction to the transfer device in response to the received test result, so that the transfer device transfers the battery 9 to the target workstation according to the transfer instruction.

[0124] In an embodiment of the present application, the test completion signal can be sent by the lower computer or PLC to the test device 2. When the wiring harness between the battery 9 to be tested and the test device 2 is unplugged, the lower computer or PLC sends a test completion signal to the test device 2 indicating the end of the test.

[0125] In the embodiment of the present application, the transfer device has many possible forms, for example, the transfer device is a conveyor belt, which has a simple structure and high transportation efficiency, and another example is an arm-type robot, which can perform more complex operations. Exemplarily, the host 1 sends a transfer instruction to the arm-type robot, and the arm-type robot removes the battery 9 and transfers it to the target station corresponding to the next process.

[0126] Fig.12The present invention provides an exemplary battery end-of-line test method flow chart, the specific method includes the following steps S201 to S207:

[0127] Step S201, batteries flow into a testing station.

[0128] When the battery needs to undergo EOL testing through the battery end-of-line testing system, the transfer equipment transfers the battery to be tested to the testing station.

[0129] Step S202, connecting the wiring harness tooling.

[0130] The battery to be tested is connected to the test equipment in the battery offline test system through a wiring harness.

[0131] Step S203: verify the PN code of the battery.

[0132] The PN code of the battery is verified through the Manufacturing Execution System (MES) to determine the test mode of the battery.

[0133] Step S204: perform EOL test.

[0134] Perform EOL test on the battery in the corresponding test mode through the test equipment.

[0135] Step S205, releasing the tooling harness.

[0136] After the EOL test of the battery is completed, the wiring harness connecting the battery to be tested and the test equipment is disconnected.

[0137] Step S206: Upload test data.

[0138] Upload the test data corresponding to the test results to MES.

[0139] Step S207: The battery is moved out of the testing station.

[0140] The tested batteries are moved out of the testing station through the transfer equipment.

[0141] An embodiment of the present application provides a battery offline testing method, the method comprising: a host determines a test mode of a battery to be tested in response to a test start signal, and sends a control instruction to a test device according to the test mode; the test device controls a switch device to connect or disconnect a line with the battery in response to the control instruction, and tests the battery based on the test mode, and sends the test result to the host; the host receives the test result sent by the test device; with the above implementation scheme, since a switch device is provided on the test device, after the host determines the test mode required for the battery to be tested, the host indirectly controls the test device to connect the switch device required to be connected for the test mode based on the control instruction by sending a control instruction corresponding to the test mode to the test device, thereby avoiding the technical problem of reduced test efficiency due to plugging and unplugging lines when switching different test modes for different types of batteries, and also reduces the probability of line connection errors due to manual plugging and unplugging of wiring harnesses.

[0142] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application is described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the application documents.

Claims

1. A battery offline testing system, characterized in that: include: A host and a test device, wherein a switch device is provided on the test device, the test device comprises a plurality of components, and each circuit between the test device and the battery to be tested is electrically connected through the switch device; The host is used to determine the test mode of the battery in response to the test start signal, and determine the target component corresponding to the test mode and a group of circuits corresponding to the target component from the multiple components, and generate a control instruction according to the test mode and the group of circuits and send it to the test device; The testing device is used to control the switch device to connect or disconnect the set of lines between the battery in response to the control instruction; And testing the battery based on the test mode.

2. The battery end-of-line test system according to claim 1, characterized in that: There are multiple switch devices and multiple circuits, and the switch devices and the circuits correspond one to one, wherein: The host is further used to determine the group of lines corresponding to the target component to be connected between the test device and the battery, and the connection sequence corresponding to the group of lines; determine a group of switch devices that control the connection of the group of lines; generate a control instruction based on the test mode, the group of switch devices and the connection sequence, and send it to the test device; The test device is further used to control the connectivity of the group of switch devices according to the connectivity sequence based on the control instruction; and to control the remaining switch devices to be disconnected when the group of switch devices are connected.

3. The battery offline testing system according to claim 2, characterized in that: The circuit includes a first wiring harness electrically connected to the test equipment, and a second wiring harness electrically connected to the battery; There are at least two first wiring harnesses, and at least two of the first wiring harnesses are electrically connected to the second wiring harness through the switch device respectively; or, There are at least two second wiring harnesses, and at least two of the second wiring harnesses are electrically connected to the first wiring harness through the switch device respectively.

4. The battery end-of-line test system according to claim 1, characterized in that: The switching device is a relay or a contactor.

5. The battery end-of-line testing system according to any one of claims 1 to 4, characterized in that: It also includes a connecting device, which includes a first interface and a second interface connected in a one-to-one correspondence. The first interface is detachably connected to the test device, and the second interface is detachably connected to the battery. The test device and the battery are electrically connected through the first interface and the second interface.

6. The battery end-of-line testing system according to any one of claims 1 to 4, characterized in that: Also included is an identifier, the identifier is electrically connected to the host, wherein: The identifier is used to obtain the type parameter of the battery and send the type parameter to the host; The host is used to receive the type parameter sent by the identifier and determine the test mode of the battery according to the type parameter.

7. The battery end-of-line testing system according to any one of claims 1 to 4, characterized in that: Also included is a storage device for storing a wire harness and / or an operating tool, wherein the wire harness is used to form the line.

8. The battery end-of-line testing system according to any one of claims 1 to 4, characterized in that: It also includes an interactive device, which is electrically connected to the host and includes at least one or more of an input component, a display component, and an alarm component.

9. The battery end-of-line testing system according to claim 8, characterized in that: It also includes a supporting frame, and the testing device and the interactive device are connected to the supporting frame.

10. The battery end-of-line testing system according to any one of claims 1 to 4, characterized in that: The host is also used to send a transfer instruction to the transfer equipment in response to receiving the test result, so that the transfer equipment can transfer the battery to the target workstation according to the transfer instruction.

11. A battery production line, characterized in that: include: At least one end-of-line test system for a battery according to any one of claims 1 to 10; Production equipment for producing the batteries to be tested; The transfer equipment is used to take out the battery to be tested from the production equipment and place it in the battery's offline test system, or to take out the battery that has completed the test from the offline test system and transfer it to a target workstation.

12. A battery end-of-line testing method, characterized in that: End-of-line test system for batteries, including: The host determines the test mode of the battery to be tested in response to the test start signal, and sends a control instruction to the test device according to the test mode; The testing device controls the switch device to connect or disconnect the line with the battery in response to the control instruction, and tests the battery based on the test mode, and sends the test result to the host; The host receives the test result sent by the test device.

13. The battery end-of-line testing method according to claim 12, characterized in that: The method further comprises: The identifier obtains the type parameter of the battery and sends the type parameter to the host; The host receives the type parameter sent by the identifier, and determines the test mode of the battery according to the type parameter.

14. The battery end-of-line testing method according to claim 12, characterized in that: The number of the switch devices is multiple, the number of the circuits is multiple, the switch devices correspond to the circuits one by one, and the sending of control instructions to the test device according to the test mode includes: The host determines a group of lines to be connected between the test device and the battery and a connection order corresponding to the group of lines according to the test mode; and determines a group of switch devices for controlling the connection of the group of lines; The host generates a control instruction based on the group of switch devices and the connection sequence; and sends the control instruction to the test device.

15. The battery end-of-line testing method according to claim 14, characterized in that: The control switch device connects or disconnects the line between the battery and the battery, including: Based on the control instruction, the test device controls the connection of the group of switching devices in accordance with the connection sequence, so that the group of lines to be connected with the battery are connected in accordance with the connection sequence; and when the group of switching devices are connected, the remaining switching devices are controlled to be disconnected.

16. The battery end-of-line testing method according to claim 12, characterized in that: The method further comprises: The test device sends the test result to the host in response to the test completion signal; In response to the received test result, the host sends a transfer instruction to the transfer equipment, so that the transfer equipment transfers the battery to the target workstation according to the transfer instruction.

17. The battery end-of-line testing method according to claim 13, characterized in that: The type parameter is the part number or component number of the battery.

Images