CN117054877A

CN117054877A - Offline testing system of battery, battery production line and testing method

Info

Publication number: CN117054877A
Application number: CN202311302822.0A
Authority: CN
Inventors: 邱世平
Original assignee: Contemporary Amperex Technology Co Ltd
Current assignee: Contemporary Amperex Technology Co Ltd
Priority date: 2023-10-10
Filing date: 2023-10-10
Publication date: 2023-11-14

Abstract

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

Description

Offline testing system of battery, battery production line and testing method

Technical Field

The present application relates to the field of battery production technologies, and in particular, to a battery offline test system, a battery production line, and a test method.

Background

New energy batteries are increasingly used in life and industry, for example, new energy automobiles having a battery mounted therein have been widely used, and in addition, batteries are increasingly used in the field of energy storage and the like.

When a battery is tested in an End Of Line (EOL), adjustment Of a test mode is generally required, and in the related art, an operator manually connects a Line to switch the test mode, which is time-consuming and prone to error.

Disclosure of Invention

In order to solve the technical problems, the application aims to provide a battery offline test system, a battery production line and a battery testing method.

The application is realized by the following technical scheme.

The first aspect of the application provides a battery offline test system, which comprises a host and test equipment, wherein the host is used for responding to a test starting signal, determining a test mode of a battery to be tested, sending a control instruction to the test equipment according to the test mode, and receiving a test result sent by the test equipment; the testing equipment is provided with a switching device, and each circuit between the testing equipment and the battery is electrically connected through the switching device; the test equipment is used for responding to the control instruction and controlling the switching device to connect or disconnect the circuit between the switching device and the battery; and testing the battery based on the test pattern; and transmitting the test result to the host in response to the test completion signal.

In the technical scheme of the embodiment of the application, the host can respond to the test starting signal to determine the test mode of the battery to be tested, and send a control instruction to the test equipment according to the test mode so as to test the battery to be tested by the test equipment, and after the test equipment tests the battery based on the test mode, the host can respond to the test completion signal to send the test result to the host, and the host is also used for receiving the test result sent by the test equipment. On the basis, a switching device is arranged on the test equipment, each line between the test equipment and the battery is electrically connected through the switching device, namely, the wire harnesses corresponding to each line between the test equipment and the battery are connected, the test equipment is used for responding to a control instruction to control the connection or disconnection of the switching device and the line between the batteries, namely, the test equipment responds to the control instruction to connect the line required by the test mode through the switching device, and disconnect the line not required by the test mode through the switching device, so that the operation of manually connecting or disconnecting the line by an operator when the test mode is switched is omitted, on one hand, the time is saved, and the test efficiency of the test system is improved; on the other hand, the probability of line connection errors can be reduced by adopting the automatic control of the connection or disconnection of the switching device.

In some embodiments of the present application, the number of switching devices and lines is plural, the switching devices and lines are in one-to-one correspondence, wherein: the host computer is also used for determining a group of lines to be communicated between the test equipment and the battery and a corresponding communication sequence of the group of lines according to the test mode; determining a set of switching devices controlling a set of line connections; generating control instructions based on a set of switching devices and a communication sequence; and sending a control instruction to the test equipment; the test equipment is also used for controlling the communication of a group of switching devices according to the communication sequence based on the control instruction; and in the case where a group of switching devices is on, controlling the remaining switching devices to be off. After a group of switching devices to be communicated and a communication sequence are determined, the host computer sends the switching devices to the testing equipment, the testing equipment responds to a control instruction, the circuits required by the testing mode are communicated through the switching devices, and the circuits not required by the testing mode are disconnected through the switching devices.

In some embodiments of the application, the circuit includes a first wire harness electrically connected to the test device, and a second wire harness electrically connected to the battery; the at least two first wire bundles are respectively and electrically connected with the second wire bundle through the switching device; or at least two second wire harnesses are electrically connected with the first wire harness through the switching device respectively. Here, at least two first pencil pass through switching device electric connection second pencil respectively, can realize the multiplexing of second pencil in different test modes, and correspondingly, at least two second pencil pass through switching device electric connection first pencil respectively, can realize the multiplexing of first pencil in different test modes to practice thrift the pencil, save material also can reduce the space occupation of pencil, thereby reduce test equipment's volume.

In some embodiments of the application, the switching device is a relay or a contactor. Here, the relay has advantages such as mechanical strength is big as switching device, stable in structure, is difficult for receiving external interference, and the contactor has advantages such as long service life as controlling device, reliable and stable, the maintenance of being convenient for.

In some embodiments of the present application, the battery offline test system further includes a connection device, where the connection device includes a first interface and a second interface that are 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 is electrically connected to the battery through the first interface and the second interface. Here, through setting up first interface and dismantling the connection test equipment, the battery can be dismantled to the second interface, can conveniently maintain the circuit, has improved the convenience of use of the test system that rolls off production line of battery.

In some embodiments of the present application, the system for testing battery offline further comprises an identifier, wherein the identifier is electrically connected with the host, and the identifier is as follows: the identifier is used for acquiring the type parameter of the battery and sending the type parameter to the host; the host is used for receiving the type parameter sent by the identifier and determining the test mode of the battery according to the type parameter. Here, by setting the identifier, the type parameter of the battery can be conveniently obtained, so that the host computer can determine the test mode of the battery according to the type parameter, and the test equipment is controlled to adjust the switching device according to the test mode of the battery.

In some embodiments of the present application, the battery offline testing system further includes a housing device for housing a wire harness and/or an operating tool, the wire harness being used to form the line. Here, the storage device can store or regulate the wire harness, the operation tool and the like, so that the battery off-line test system is tidier, the wire harness and the like stored therein can be protected, the possibility of damage to the wire harness is reduced, and the safety is improved.

In some embodiments of the present application, the system for testing battery offline further includes an interaction device, wherein the interaction device is electrically connected to the host, and the interaction device at least includes one or more of an input component, a display component, and an alarm component. Here, the input component in the interaction equipment can be convenient for an operator to control the host computer and/or the test equipment, and the display component and the alarm component can timely feed back the relevant test information to the operator and can remind the operator to timely process when the test fails.

In some embodiments of the application, the battery offline testing system further comprises a carrier to which the testing device and the interaction device are connected. Here, the carrier may facilitate placement of the test equipment and the interactive equipment to provide an equipment layout that is convenient for an operator to handle.

In some embodiments of the application, the host is further configured to send a diversion instruction to the diversion apparatus in response to receiving the test result, so that the diversion apparatus diverts the battery to the target station according to the diversion instruction.

A second aspect of the present application provides a battery production line including a production apparatus for producing a battery to be tested, a transfer apparatus for taking out the battery to be tested from the production apparatus and placing it in the battery's offline test system, or taking out the battery that has completed the test from the offline test system and transferring it to a target station, and an offline test system for the battery of any one of the first aspects.

A third aspect of the present application provides a method for testing a battery offline, which is applied to a system for testing a battery offline, including: the method comprises the steps that a host responds to a test starting signal, a test mode of a battery to be tested is determined, and a control instruction is sent to test equipment according to the test mode; the testing equipment responds to the control instruction, controls the switching device to connect or disconnect a circuit between the switching device and the battery, tests the battery based on a testing mode and sends a testing result to the host; and the host receives the test result sent by the test equipment.

In the technical scheme of the embodiment of the application, the switching device is arranged on the test equipment, and the host computer indirectly controls the test equipment to communicate the switching device which is required to be communicated by the test mode based on the control instruction by sending the control instruction corresponding to the test mode to the test equipment after determining the test mode which is required by the battery to be tested, so that the technical problem of reduced test efficiency caused by plugging and unplugging the circuit when different test modes are switched for different types of batteries is avoided, and meanwhile, the probability of circuit connection error caused by manually plugging and unplugging the wire harness is also reduced.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the application. Also, like reference numerals are used to designate like parts throughout the accompanying drawings. In the drawings:

fig. 1 is a schematic diagram of a system for testing battery offline according to an embodiment of the present application;

fig. 2 is a schematic structural diagram of a test device in a battery offline test system according to an embodiment of the present application;

Fig. 3 is a schematic connection diagram of a second wire harness and a plurality of first wire harnesses in the battery offline testing system according to the embodiment of the present application;

fig. 4 is a schematic connection diagram of a first wire harness and a plurality of second wire harnesses in a battery offline testing system according to an embodiment of the present application;

fig. 5 is a schematic structural diagram of a connection device in the battery offline test system according to the embodiment of the present application;

fig. 6 is a schematic structural diagram (isometric view) of a system for testing battery offline according to an embodiment of the present application;

FIG. 7 is an enlarged view of a portion of FIG. 6A, provided by an embodiment of the present application;

fig. 8 is a schematic diagram (front view) of a system for testing a battery in an offline state according to an embodiment of the present application;

fig. 9 is a schematic diagram (left view) of a system for testing battery offline according to an embodiment of the present application;

fig. 10 is a schematic diagram (top view) of a system for testing a battery in an offline state according to an embodiment of the present application;

fig. 11 is a flowchart of a method for testing battery offline according to an embodiment of the present application;

fig. 12 is a flowchart illustrating an exemplary method for testing a battery in a down line according to an embodiment of the present application.

Description of the reference numerals

1-a host; 11-a power supply box; 2-a test device; 21-a switching device; 3-wiring; 31-a first wire harness; 32-a second harness; 4-connecting the devices; 41-a box body; 42-a first interface; 43-second interface; 5-an identifier; 6-a storage device; 61-a storage cabinet; 62-reel; 63-a work tray; 7-an interaction device; 71-an input assembly; 72-a display assembly; 73-an alarm assembly; 8-a carrier; 81-supporting columns; 82-supporting beams; 83-a workbench; 84-hanging bracket; 85-a protective net; 9-battery.

Detailed Description

Embodiments of the technical scheme of the present application will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present application, and thus are merely examples, and are not intended to limit the scope of the present application.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having" and any variations thereof in the description of the application and in the description of the drawings above are intended to cover non-exclusive inclusions.

In the description of embodiments of the present application, the technical terms "first," "second," "third," etc. are used merely to distinguish between different objects and should not be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, a particular order or a primary or secondary relationship. In the description of the embodiments of the present application, the meaning of "plurality" is two or more unless explicitly defined otherwise.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

In the description of the embodiments of the present application, the term "and/or" is merely an association relationship describing an association object, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist together, and B exists alone. In this context, the character "/" generally indicates that the associated object is an "or" relationship.

In the description of the embodiments of the present application, the orientation or positional relationship indicated by the technical terms "length", "width", "thickness", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are orientation or positional relationship based on the drawings, merely for convenience of describing the embodiments of the present application and for simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific orientation, be configured, operated, or used in a specific orientation, and thus should not be construed as limiting the embodiments of the present application.

In the description of the embodiments of the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured" and the like should be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; or may be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present application will be understood by those of ordinary skill in the art according to specific circumstances.

In the description of the embodiments of the present application, unless explicitly specified and limited otherwise, the term "contact" is to be understood in a broad sense as either direct contact or contact across an intermediate layer, as either contact with substantially no interaction force between the two in contact or contact with interaction force between the two in contact.

The present application will be described in detail below.

In the production manufacturing process of the battery, particularly when the battery pack is subjected to the offline test, the content of the test required by different battery packs is different, a plurality of corresponding test modes exist, in the different test modes, the electrical connection modes of the test equipment and the battery packs are different, in the related art, a plurality of interfaces are arranged on the wiring cabinet, an operator selects the corresponding wiring harness to be connected to the interfaces according to the test mode corresponding to the battery pack, the process needs to consume more time, the test efficiency is influenced, and the operator is easy to make mistakes when carrying out the manual plugging operation, so that the test result is influenced.

The present application has been made in view of the above-mentioned problems occurring in the related art, and proposes a battery offline test system, referring to fig. 1 and 2, which includes a host 1 and a test device 2, the host 1 being configured to determine a test mode of a battery 9 to be tested in response to a test start signal, send a control instruction to the test device 2 according to the test mode, and receive a test result sent by the test device 2; the test equipment 2 is provided with a switching device 21, and each circuit 3 between the test equipment 2 and the battery 9 is electrically connected through the switching device 21; the test device 2 is used for responding to a control instruction and controlling the switching device 21 to connect or disconnect the line 3 between the battery 9; and testing the battery 9 based on the test mode; in response to the test completion signal, the test result is transmitted to the host 1.

In the embodiment of the present application, the battery 9 may refer to a battery cell or a battery pack, and taking the battery 9 as an example, the battery 9 is formed by connecting a plurality of battery cells in series, parallel or series-parallel, and the battery 9 may further include a current collecting component for implementing electrical connection between the plurality of battery cells.

In the embodiment of the application, the battery cell can be a secondary battery, and the secondary battery refers to a battery cell which can activate the active material in a charging mode to continue to use after the battery cell discharges. The battery cell may be a lithium 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 storage battery cell, etc., which is not limited by the embodiment of the application.

In the embodiment of the application, the host 1 may be a computer, an industrial personal computer, or the like, and the host 1 may determine a test mode of the battery 9 to be tested in response to the test start signal, send a control instruction to the test device 2 according to the test mode, and receive a test result sent by the test device 2.

In the embodiment of the present application, the testing device 2 may include a plurality of components for testing different performances of the battery 9, for example, the testing device 2 includes a module total voltage testing component, a cell voltage testing component, a module temperature testing component, a module differential voltage testing component, a module internal resistance testing component, an insulation voltage withstanding testing component, and the like.

In the embodiment of the present application, the switching device 21 is a device connected in the line 3 and capable of connecting or disconnecting the electrical connection between the test device 2 and the battery 9 at two ends of the line 3, and 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, electrical 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 via a certain line 3 is broken by the switching device 21, no electrical energy and/or signals can be transmitted between the test device 2 and the battery 9 via that line 3.

According to the battery offline test system provided by the embodiment of the application, the host 1 can respond to the test start signal to determine the test mode of the battery 9 to be tested, and send a control instruction to the test equipment 2 according to the test mode, so that the test equipment 2 tests the battery 9 to be tested, after the test equipment 2 tests the battery 9 based on the test mode, the test result is sent to the host 1 in response to the test completion signal, and the host 1 is also used for receiving the test result sent by the test equipment 2.

On the basis, a switching device 21 is arranged on the test equipment 2, each line 3 between the test equipment 2 and the battery 9 is electrically connected through the switching device 21, namely, the wire harness corresponding to each line 3 between the test equipment 2 and the battery 9 is connected, the test equipment 2 is used for controlling the connection or disconnection of the switching device 21 and the line 3 between the battery 9 in response to a control instruction, namely, the test equipment 2 is used for connecting the line 3 required by a test mode through the switching device 21 in response to the control instruction, and disconnecting the line 3 not required by the test mode through the switching device 21.

The arrangement avoids the operation of manually connecting or disconnecting the circuit 3 by an operator when switching the test mode, on one hand, saves time, and improves the test efficiency of the battery offline test system; on the other hand, with the automatic control of the on-off of the switching device 21, the probability of the line 3 on-error can be reduced.

Referring to fig. 2, in some embodiments of the present application, the number of switching devices 21 and lines 3 is plural, and the switching devices 21 and the lines 3 are in one-to-one correspondence, wherein: the host 1 is further configured to determine a group of lines 3 to be connected with the test device 2 and a connection sequence corresponding to the group of lines 3 according to the test mode; determining a set of switching devices 21 controlling the communication of a set of lines 3; generating a control instruction based on a set of switching devices 21 and a communication order; and sends a control instruction to the test device 2; the test apparatus 2 is further configured to control the communication of the group of switching devices 21 in the communication order based on the control instruction; and controls the remaining switching devices 21 to be turned off in the case where the switching devices 21 are turned on.

Since the different types of batteries 9 have different corresponding items to be tested, that is, different test modes exist, after determining the test mode required by the battery 9 to be tested, the host 1 also needs to determine a group of lines 3 which are required to be communicated with the battery 9 to be tested when the test equipment 2 performs the test mode on the battery 9 to be tested, and since a plurality of test interfaces corresponding to a plurality of components for testing the battery 9 with different performances exist on the test equipment 2, the different test interfaces are connected with the different lines 3, and therefore, when the test mode corresponding to the test equipment 2 needs to use a certain test interface according to the test sequence, the corresponding lines 3 need to be communicated.

On the basis, after determining the line 3 to be communicated between the testing device 2 and the battery 9 to be tested, the host 1 determines a group of switching devices 21 for controlling the connection of a group of lines 3, and one switching device 21 correspondingly controls the connection or disconnection of one line 3; the host 1 may then generate control instructions based on the identification and connectivity order of the set of switching devices 21 to send to the test apparatus 2.

Referring to fig. 3 and 4, in some embodiments of the present application, the circuit 3 includes a first harness 31 electrically connected to the test device 2, and a second harness 32 electrically connected to the battery 9; at least two first wire harnesses 31 are provided, and the at least two first wire harnesses 31 are respectively electrically connected with the second wire harness 32 through the switching device 21; or, at least two second wire harnesses 32 are provided, and at least two second wire harnesses 32 are electrically connected to the first wire harness 31 through the switching device 21, respectively.

In the embodiment of the application, the line 3 is formed by interconnecting at least two wire harnesses, wherein the wire harnesses can be a low-voltage wire harness, a high-voltage wire harness and the like, and the wire harnesses can be wire harnesses for transmitting electric energy and wire harnesses for transmitting signals.

In the embodiment of the present application, at least two first wire harnesses 31 may be connected to one second wire harness 32 through the switching device 21, and with continued reference to fig. 3, the two first wire harnesses 31 are a charging wire harness and a discharging wire harness, respectively, the charging wire harness is used for transmitting electric energy from the test device 2 to the battery 9, the discharging wire harness is used for transmitting electric energy from the battery 9 to the test device 2, and the discharging wire harness and the charging wire harness are connected to the same second wire harness 32 through the switching device 21, respectively.

On the basis, when the test equipment 2 is required to charge the battery 9, the host 1 controls the switching device 21 connected with the charging wire harness to connect the charging wire harness with the corresponding second wire harness 32, and controls the switching device 21 connected with the discharging wire harness to disconnect the discharging wire harness from the second wire harness 32; accordingly, when the test device 2 is required to discharge the battery 9, the host 1 controls the switching device 21 to which the discharge harness is connected to connect the discharge harness and the corresponding second harness 32, and controls the switching device 21 to which the charge harness is connected to disconnect the charge harness from the second harness 32.

In the embodiment of the present application, at least two second wire harnesses 32 may be connected to one first wire harness 31 through the switching device 21, and with continued reference to fig. 4, the two second wire harnesses 32 are respectively a module voltage wire harness and a cell voltage wire harness, the module voltage wire harness is used for testing the total voltage of the battery 9, the cell voltage wire harness is used for testing the voltage of a single cell, and the module voltage wire harness and the cell voltage wire harness are connected to the same first wire harness 31.

On the basis, when the test equipment 2 is required to test the total voltage of the battery 9, the host 1 controls the switching device 21 connected with the module voltage wire harness to connect the module voltage wire harness with the corresponding first wire harness 31, and controls the switching device 21 connected with the battery cell voltage wire harness to disconnect the battery cell voltage wire harness from the first wire harness 31; accordingly, when the test apparatus 2 is required to test the voltage of a single cell, the host 1 controls the switching device 21 to which the module voltage harness is connected to disconnect the module voltage harness from the corresponding first wire harness 31, and controls the switching device 21 to which the cell voltage harness is connected to connect the cell voltage harness to the first wire harness 31.

According to the battery offline test system provided by the embodiment of the application, at least two first wire harnesses 31 are respectively and electrically connected with the second wire harnesses 32 through the switch device 21, so that multiplexing of the second wire harnesses 32 in different test modes can be realized, correspondingly, at least two second wire harnesses 32 are respectively and electrically connected with the first wire harnesses 31 through the switch device 21, multiplexing of the first wire harnesses 31 in different test modes can be realized, and therefore wire harnesses are saved, materials are saved, space occupation of the wire harnesses can be reduced, and the volume of the test equipment 2 is reduced.

In some embodiments of the application, the switching device 21 is a relay or a contactor.

In the embodiment of the application, the relay can be an electromagnetic relay, a voltage relay, a time relay, a pressure relay, a solid-state relay and the like, and the embodiment of the application is not limited to the above.

In the embodiment of the application, the contactor can be an electromagnetic contactor or an electric air contactor, and the contactor can be a monopole contactor or a multipole contactor.

The battery offline test system provided by the embodiment of the application has the advantages of large mechanical strength, stable structure, difficult external interference and the like when being used as the switch device 21, and has the advantages of long service life, stability, reliability, convenient maintenance and the like when being used as the control device.

Referring to fig. 5, in some embodiments of the present application, the battery offline test system further includes a connection device 4, where the connection device 4 includes a first interface 42 and a second interface 43 connected in a one-to-one correspondence, the first interface 42 is detachably connected to the test device 2, and the second interface 43 is detachably connected to the battery 9, so as to electrically connect the test device 2 and the battery 9.

In the embodiment of the present application, the connection device 4 may be a wire harness adapter box, where the connection device 4 includes a box 41 and an interface disposed on a side wall of the box 41, and the wire harness may be plugged into and pulled out of the interface and fixed on the connection device 4 by a clamping connection, a fastening connection, and other manners.

Specifically, the interfaces include a first interface 42 and a second interface 43, the wire harness of the test device 2 is connected to the connection device 4 through the first interface 42, and then connected to the battery 9 through the wire harness connected to the corresponding second interface 43, so that when the wire harness needs maintenance, the wire harness can be conveniently removed from the connection device 4 for maintenance.

According to the battery offline test system provided by the embodiment of the application, the first interface 42 is arranged to be detachably connected with the test equipment 2, and the second interface 43 is arranged to be detachably connected with the battery 9, so that the line 3 can be conveniently maintained, and the use convenience of the battery offline test system is improved.

Referring to fig. 6, 7 and 8, in some embodiments of the present application, the system for testing battery offline further includes a identifier 5, wherein the identifier 5 is electrically connected to the host 1, and wherein: the identifier 5 is used for acquiring the type parameter of the battery 9 and sending the type parameter to the host 1; the host 1 is configured to receive the type parameter sent by the identifier 5, and determine a test mode of the battery 9 according to the type parameter.

In the embodiment of the present application, the identifier 5 may be a camera, a code scanner, a radio frequency sensor, an infrared sensor, etc. Illustratively, the identifier 5 is a camera, which may collect image information of the battery 9, and the host 1 determines a test mode to be performed on the battery 9 according to the image information.

For another example, the identifier 5 is a code scanner, each battery 9 is provided with a two-dimensional code, a dot matrix code, and the like for identification, and the host 1 determines a test mode to be performed on the battery 9 according to information contained in the two-dimensional code or the dot matrix code.

According to the battery offline test system provided by the embodiment of the application, the type parameters of the battery 9 can be conveniently obtained by arranging the identifier 5, so that the host 1 can conveniently determine the test mode of the battery 9 according to the type parameters, and the test equipment 2 is controlled to adjust the switching device 21 according to the test mode of the battery 9.

Referring to fig. 6, 7, 8 and 10, in some embodiments of the present application, the battery offline testing system further includes a housing device 6, the housing device 6 for housing a wire harness and/or an operation tool, the wire harness for forming the wire harness 3.

In the embodiment of the present application, the storage device 6 may include a storage cabinet 61, where the storage cabinet 61 has an accommodating space, and an idle or standby wire harness may be stored in the accommodating space of the storage cabinet 61, where the storage cabinet 61 is disposed at the testing device 2, so that an operator can quickly pick and place the wire harness.

In the embodiment of the present application, the storage device 6 may further include a wire reel 62, the wire harness connected between the test device 2 and the battery 9 may be disposed on the wire reel 62, the wire reel 62 may wind up the wire harness therein to prevent the redundant wire harness from being leaked outside, so as to provide protection for the wire harness, and the wire reel 62 may be a manual wire reel or an electric wire reel, which is not limited in the embodiment of the present application.

In the embodiment of the present application, the storage device 6 may also be a working tray 63, where the working tray 63 may be used for placing an operating tool commonly used by an operator, such as a screwdriver, an insulating glove, etc., so that the operator may quickly pick and place the operating tool.

According to the battery offline testing system provided by the embodiment of the application, the containing equipment 6 can contain or regulate the wire harness, the operation tool and the like, so that the battery offline testing system is tidier, the wire harness contained therein can be protected, the possibility of damaging the wire harness is reduced, and the safety is improved.

Referring to fig. 6, 7 and 8, in some embodiments of the present application, the battery offline testing system further includes an interaction device 7, where the interaction device 7 is electrically connected to the host 1, and the interaction device 7 includes at least one or more of an input component 71, a display component 72 and an alarm component 73.

In the embodiment of the present application, the input component 71 may be a keyboard, a station button, a touch pad, a recording device, etc., where the keyboard may facilitate an operator to input information to the host 1 so as to control the host 1, the station button may be used to send a start signal or a stop signal to the host 1, and the host 1 responds to the stop signal to suspend the test of the current battery 9 by the test device 2.

In the embodiment of the present application, the display component 72 may be a display, an indicator light, etc., where the display may conveniently display the relevant information of the test, the operation interface, etc. on the host 1 to the operator, and the indicator light may be used to prompt the test condition, such as starting the test, suspending the test, completing the test, etc.

In the embodiment of the present application, the alarm component 73 may send an alarm to an operator in the case of a fault or the like in the test, the alarm component 73 may include a warning light, such as a tri-color warning light, which may send out a conspicuous light beam to prompt the operator, and the alarm component 73 may further include a buzzer, which may send out a beeping sound to prompt the operator.

According to the battery offline test system provided by the embodiment of the application, the input component 71 in the interaction device 7 can facilitate an operator to control the host 1 and/or the test device 2, the display component 72 and the alarm component 73 can timely feed back relevant test information to the operator, and the operator can be reminded of timely processing when a test fails.

Referring to fig. 6, 8, 9 and 10, in some embodiments of the present application, the battery offline testing system further includes a carrier 8, and the testing device 2 and the interaction device 7 are connected to the carrier 8.

In the embodiment of the application, the bearing frame 8 may include a support column 81 and a support beam 82, the support column 81 is vertically arranged, the support beam 82 is horizontally arranged, 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 adopting clamping, welding, fastening members and the like, and in order to improve the connection strength between the support column 81 and the support beam 82, oblique pull beams may be further arranged between the support column 81 and the support beam 82 to form a truss structure together.

In the embodiment of the present application, the carrying frame 8 may further include a workbench 83, where the workbench 83 is disposed in a truss structure formed by connecting the support columns 81 and the support beams 82, and the workbench 83 may be used for placing the battery 9 to be tested, so as to facilitate the operation of an operator.

In the embodiment of the present application, the carrier 8 may further include a hanger 84, where the hanger 84 is fixedly connected to a side of the supporting beam 82 facing the table 83, the hanger 84 is disposed above or beside the table 83, and the interaction device 7 and the like may be fixed on the hanger 84, so as to facilitate the operation of the user.

Illustratively, a first hanger is provided above the work table 83, on which a connection device 4, a station button, a work tray 63, a three-color warning lamp, a power box 11, a main body 1, etc. are provided, and a reel 62 is connected to the support beam 82 and located laterally of the first hanger. The power supply box 11 may be an uninterruptible power supply (Uninterruptible Power Supply, UPS) for stably supplying power to the host 1 so that the host 1 can stably operate.

Illustratively, a second hanger is provided on the side of the table 83, on which the display assembly 72, the keyboard, the identifier 5 are provided, the display assembly 72, the identifier 5, etc. on the second hanger being convenient for the operator to operate.

It should be noted that, in the system for testing the battery offline according to the present application, a plurality of work tables 83 may be provided to test a plurality of batteries 9, and accordingly, each work table 83 is correspondingly provided with a first hanger, and a host 1, a station button, etc. connected to the first hanger, and a second hanger may be provided at an entrance of the truss structure, and a corresponding identifier 5 is provided on the second hanger corresponding to each work table 83.

In the embodiment of the present application, the carrier 8 may further include a protection net 85, where the protection net 85 is disposed on the outer side of the truss structure, so as to provide protection for the battery's offline testing system.

According to the battery offline testing system provided by the embodiment of the application, the bearing frame 8 can facilitate the placement of the testing equipment 2 and the interaction equipment 7 so as to provide equipment layout which is convenient for an operator to operate.

In some embodiments of the present application, the host 1 is further configured to send a diversion instruction to the diversion apparatus in response to receiving the test result, so that the diversion apparatus diverts the battery 9 to the target station according to the diversion instruction.

The embodiment of the application provides a battery offline test system, which comprises a host 1 and test equipment 2, wherein the host 1 is used for responding to a test starting signal, determining a test mode of a battery 9 to be tested, sending a control instruction to the test equipment 2 according to the test mode, and receiving a test result sent by the test equipment 2; the test equipment 2 is provided with a switching device 21, and each circuit 3 between the test equipment 2 and the battery 9 is electrically connected through the switching device 21; the test device 2 is used for responding to a control instruction and controlling the switching device 21 to connect or disconnect the line 3 between the battery 9; and testing the battery 9 based on the test mode; transmitting a test result to the host 1 in response to the test completion signal; by adopting the implementation scheme, the operation of manually connecting or disconnecting the circuit by an operator when switching the test mode is omitted, on one hand, the time is saved, and the test efficiency of the test system is improved; on the other hand, the probability of line connection errors can be reduced by adopting the automatic control of the connection or disconnection of the switching device.

In addition, the embodiment of the application also provides a battery production line, which comprises production equipment, transfer equipment and a battery off-line test system, wherein the production equipment is used for producing the battery 9 to be tested, the transfer equipment is used for taking out the battery 9 to be tested from the production equipment and placing the battery 9 to be tested in the battery off-line test system, or taking out the battery 9 which is subjected to the test from the off-line test system and transferring the battery 9 to a target station.

In the embodiment of the present application, the production device is used for producing the battery 9, for example, the production device may be an assembly device for assembling the battery cells in the housing, or the production device may be a welding device for connecting a plurality of battery cells in the housing, and according to different process sequences, the production device may have various possible forms.

In the embodiment of the application, the transferring equipment has various possible forms, for example, the transferring equipment is a conveyor belt, the conveyor belt has a simple structure and high transportation efficiency, and for example, the transferring equipment is an arm type robot, and the arm type robot can realize more complex operation.

In the embodiment of the application, the target station is possible, for example, the target station may be an assembly station of the battery 9, specifically, the cover plate in the shell is not installed before the test, and the battery 9 after the test is transported to the target position by the transporting device for installing the cover plate; for another example, the target station is a test station, such as vibration test, high temperature test, etc.; for another example, the target station is a recovery station, and when the test result of the battery 9 is not qualified, the transfer apparatus transfers it to the recovery station.

Based on the above embodiment, in another embodiment of the present application, a method for testing a battery offline is provided, which is applied to a system for testing a battery offline, referring to fig. 1, the system for testing a battery offline includes a host 1 and a testing device 2, and fig. 11 is a schematic flowchart of a method for testing a battery offline according to an embodiment of the present application, and the specific method includes steps S101 to S103 as follows:

step S101, the host responds to a test starting signal, determines a test mode of a battery to be tested, and sends a control instruction to test equipment according to the test mode.

In the embodiment of the application, the host 1 responds to the test start signal to determine the test mode of the battery 9 to be tested, and sends a control instruction to the test equipment 2 according to the test mode.

In the embodiment of the present application, the test start signal may be sent by a lower computer or a programmable logic controller (Programmable Logic Controller, PLC) to the host 1, and when the battery 9 to be tested is placed on the test station, the lower computer or the PLC sends the test start signal to the host 1, where the test of the battery 9 to be tested may be started.

In the embodiment of the present application, referring to fig. 7, the system for testing the battery offline further includes a identifier 5, where the identifier 5 is electrically connected with the host 1, and determining a test mode of the battery to be tested includes: the identifier 5 acquires the type parameter of the battery and sends the type parameter to the host 1; the host 1 receives the type parameter transmitted from the identifier 5 and determines a test mode of the battery according to the type parameter.

Specifically, after receiving the test start signal, the host 1 may send an instruction for acquiring the type parameter to the identifier 5 due to the electrical connection with the identifier 5, and after receiving the instruction, the identifier 5 acquires the type parameter of the battery 9 to be tested according to the instruction, and then sends the acquired type parameter to the host 1, and after receiving the type parameter sent by the identifier 5, the host 1 determines a test mode required by the battery 9 to be tested currently according to the type parameter.

In the embodiment of the present application, the type parameter is the part number or part number of the battery 9. The type parameter is illustratively a Part Number (PN) code.

In the embodiment of the present application, referring to fig. 2, the number of switching devices 21 is plural, the number of lines 3 is plural, the switching devices 21 and the lines 3 are in one-to-one correspondence, and the host sends a control instruction to the test device 2 according to a test mode, including: the host determines a group of lines 3 to be communicated between the test equipment 2 and the battery 9 and a corresponding communication sequence of the group of lines 3 according to the test mode; determining a set of switching devices 21 controlling the communication of a set of lines 3; the host 1 generates control instructions based on a set of switching devices 21 and the communication order; and sends control instructions to the test device 2.

Specifically, the different types of batteries 9 have different corresponding items to be tested, that is, the test modes have different, so after the host 1 determines the test mode required by the battery 9 to be tested according to the type parameter sent by the identifier 5, the host 1 also needs to determine a group of lines 3 which need to be communicated with the battery 9 to be tested when the test equipment 2 performs the test mode on the battery 9 to be tested, and because a plurality of test interfaces corresponding to a plurality of components for testing different performances of the battery 9 exist on the test equipment 2, the different test interfaces are connected with the different lines 3, and when the test mode corresponding to the test equipment 2 needs to use a certain test interface according to the test sequence, the corresponding lines 3 need to be communicated.

For example, the test mode corresponding to the first battery 9 to be tested needs to use P, Q and O test interfaces on the test device 2, at this time, the test device 2 needs to be connected with the line 3 corresponding to the O test interface and P, Q between the test device 2 and the first battery 9, and if the test sequence is that the P test interface is used first, then the Q test interface is used, and finally the O test interface is used, at this time, the line 3 corresponding to the P test interface needs to be connected first, then the line 3 corresponding to the Q test interface is connected, and finally the test sequence of the line 3 corresponding to the O test interface is connected with the line 3 corresponding to the different test interfaces in sequence.

In an alternative embodiment, it may sometimes be the case that multiple test interfaces on the test equipment 2 need to be used simultaneously. The circuit 3 corresponding to the P test interface and the circuit 3 corresponding to the Q test interface are connected simultaneously, then the circuit 3 corresponding to the P test interface and the circuit 3 corresponding to the O test interface are connected simultaneously, and finally the circuit 3 corresponding to the Q test interface and the circuit 3 corresponding to the O test interface are connected simultaneously.

In the embodiment of the application, after determining the line 3 to be communicated between the testing device 2 and the battery 9 to be tested, the host 1 determines a group of switching devices 21 for controlling the connection of a group of lines 3, and one switching device 21 correspondingly controls the connection or disconnection of one line 3; the host 1 may generate control instructions based on the identification and the connection order of the group of switching devices 21 and send the control instructions to the test apparatus 2.

Step S102, the testing equipment responds to the control instruction, controls the switching device to connect or disconnect a line between the switching device and the battery, tests the battery based on the testing mode, and sends a testing result to the host.

In the 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 to control the switching 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 the embodiment of the present application, the test device 2 controls the switching device 21 to connect or disconnect the line 3 with the battery 9, and includes: the test device 2 controls the communication of a group of switching devices 21 in the communication order based on the control instruction so that a group of lines 3 to be communicated with the battery 9 are communicated in the communication order; and in the case where one set of switching devices 21 is on, the remaining switching devices 21 are controlled to be off.

Specifically, after receiving the control instruction sent by the host 1, the test apparatus 2 carries the identifier of the group of switching devices 21 that need to be connected between the test apparatus 2 and the battery 9 and the connection sequence, so the test apparatus 2 can control the connection of the group of switching devices 21 according to the connection sequence, and at the same time, control the remaining switching devices 21 to be disconnected in the case that the switching devices 21 are connected.

For example, the test apparatus 2 includes a total of 5 test interfaces, namely P, Q, O, M and N test interfaces, P, Q, O, M and N test interfaces, the corresponding lines 3 are controlled by the P1, Q1, O1, M1 and N1 switching devices 21, and the group of switching devices 21 to be connected included in the control command is P1, Q1 and O1, and at this time, if the connection sequence is that the switching devices 21P1 and Q1 are connected first, all O1, M1 and N1 except P1 and Q1 in the P1, Q1, O1 and N1 switching devices 21 need to be disconnected.

Step S103, the host receives the test result sent by the test equipment.

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.

Specifically, the test device 2 performs the offline test for 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.

In the embodiment of the application, the test equipment 2 responds to the test completion signal and sends a test result to the host 1; in response to the received test results, the host 1 sends a diversion instruction to the diversion apparatus for the diversion apparatus to divert the battery 9 to the target station according to the diversion instruction.

In the embodiment of the present application, the test completion signal may be sent by a lower computer or a PLC to the test device 2, and when the wire harness between the battery 9 to be tested and the test device 2 is pulled out, the lower computer or the PLC sends the test completion signal of ending the test to the test device 2.

In the embodiment of the application, the transferring equipment has various possible forms, for example, the transferring equipment is a conveyor belt, the conveyor belt has a simple structure and high transportation efficiency, and for example, the transferring equipment is an arm type robot, and the arm type robot can realize more complex operation. Illustratively, the host 1 sends a transfer instruction to the arm robot, and the arm robot transfers the battery 9 to a target station corresponding to the next process after removing the battery.

Fig. 12 is a flowchart of an exemplary battery offline testing method according to an embodiment of the present application, and the specific method includes steps S201 to S207 as follows:

step S201, the battery flows into a testing station.

When the battery needs to be subjected to EOL test through the battery offline test system, the transfer equipment transfers the battery to be tested to the test station.

Step S202, patch cord bundle tooling.

And connecting the battery to be tested with test equipment in the battery offline test system through a wire harness.

Step S203, checking PN codes of the batteries.

The PN code of the battery is checked by a manufacturing execution system (Manufacturing Execution System, MES) to determine the test mode of the battery.

Step S204, EOL test is performed.

And carrying out EOL test of the corresponding test mode on the battery through the test equipment.

And step 205, removing the tool wire harness.

After the EOL test on the battery is completed, the harness connected between the battery to be tested and the test equipment is released.

Step S206, uploading test data.

And uploading test data corresponding to the test result to the MES.

Step S207, the battery is transferred out of the testing station.

And transferring the battery subjected to the test out of the test station through the transfer equipment.

The embodiment of the application provides a battery offline testing method, which comprises the following steps: the method comprises the steps that a host responds to a test starting signal, a test mode of a battery to be tested is determined, and a control instruction is sent to test equipment according to the test mode; the testing equipment responds to the control instruction, controls the switching device to connect or disconnect a circuit between the switching device and the battery, tests the battery based on a testing mode and sends a testing result to the host; the host receives a test result sent by the test equipment; by adopting the implementation scheme, as the switching device is arranged on the testing equipment, after the host computer determines the testing mode required by the battery to be tested, the host computer indirectly controls the testing equipment to communicate the switching device which is required to be communicated with the testing mode based on the control instruction by sending the control instruction corresponding to the testing mode to the testing equipment, so that the technical problem that the testing efficiency is reduced due to the fact that the circuit is plugged and unplugged when different testing modes are switched for different types of batteries is avoided, and meanwhile, the probability of circuit connection errors due to the fact that the wiring harness is plugged and unplugged manually can be reduced.

The above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the application, and they should be included in the scope of the present application. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the application.

Claims

1. A battery offline test system, comprising:

the host is used for responding to a test starting signal, determining a test mode of a battery to be tested, sending a control instruction to test equipment according to the test mode, and receiving a test result sent by the test equipment;

the testing equipment is provided with a switching device, and each circuit between the testing equipment and the battery is electrically connected through the switching device;

the testing equipment is used for responding to the control instruction and controlling the switching device to connect or disconnect a line between the switching device and the battery; and testing the battery based on the test pattern; and transmitting the test result to the host in response to a test completion signal.

2. The battery offline test system according to claim 1, wherein the number of the switching devices and the lines is plural, the switching devices and the lines are in one-to-one correspondence, wherein:

the host is further used for determining a group of lines to be communicated between the test equipment and the battery and a communication sequence corresponding to the group of lines according to the test mode; determining a set of switching devices controlling the set of line connections; generating a control instruction based on the set of switching devices and the communication order; and sending the control instruction to the test equipment;

The test equipment is further used for controlling the communication of the group of switching devices according to the communication sequence based on the control instruction; and controlling the rest of the switching devices to be disconnected under the condition that the group of switching devices are communicated.

3. The battery off-line testing system of claim 2, wherein the circuit comprises a first wire harness electrically connected to the testing device and a second wire harness electrically connected to the battery;

the number of the first wire bundles is at least two, and the at least two first wire bundles are respectively and electrically connected with the second wire bundles through the switch device; or alternatively, the first and second heat exchangers may be,

the number of the second wire harnesses is at least two, and the at least two second wire harnesses are electrically connected with the first wire harness through the switching device respectively.

4. The battery off-line testing system according to claim 1, wherein the switching device is a relay or a contactor.

5. The battery off-line testing system according to any one of claims 1 to 4, further comprising a connection device including a first interface and a second interface connected in one-to-one correspondence, the first interface being detachably connected to the testing device, the second interface being detachably connected to the battery, the testing device and the battery being electrically connected through the first interface and the second interface.

6. The battery offline test system according to any one of claims 1-4, further comprising an identifier electrically connected to the host, wherein:

the identifier is used for acquiring the type parameter of the battery and sending the type parameter to the host;

the host is used for receiving the type parameter sent by the identifier and determining the test mode of the battery according to the type parameter.

7. The battery off-line testing system according to any one of claims 1 to 4, further comprising a housing device for housing a wire harness and/or an operation tool, the wire harness being used to form the line.

8. The battery off-line testing system of any one of claims 1-4, further comprising an interactive device electrically connected to the host, the interactive device comprising at least one or more of an input component, a display component, and an alert component.

9. The battery off-line testing system of claim 8, further comprising a carrier to which the testing device and the interactive device are connected.

10. The battery offline test system according to any one of claims 1-4, wherein the host is further configured to send a diversion instruction to a diversion device in response to receiving the test result, for the diversion device to divert the battery to a target station according to the diversion instruction.

11. A battery production line, comprising:

at least one battery off-line testing system according to any one of claims 1 to 10;

the production equipment is used for producing the battery to be tested;

and the transferring equipment is used for taking the battery to be tested out of the production equipment and placing the battery in an offline testing system of the battery, or taking the battery which is tested out of the offline testing system and transferring the battery to a target station.

12. The battery offline test method is characterized by being applied to a battery offline test system and comprising the following steps of:

the method comprises the steps that a host responds to a test starting signal, a test mode of a battery to be tested is determined, and a control instruction is sent to test equipment according to the test mode;

the test equipment responds to the control instruction, controls a switching device to connect or disconnect a circuit between the switching device and the battery, tests the battery based on the test mode, and sends a test result to the host;

And the host receives the test result sent by the test equipment.

13. The method of battery offline testing according to claim 12, further comprising:

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 method for testing the battery offline according to claim 12, wherein the number of the switching devices is plural, the number of the lines is plural, the switching devices and the lines are in one-to-one correspondence, and the sending the control command to the testing device according to the test mode includes:

the host determines a group of lines to be communicated between the test equipment and the battery and a communication sequence corresponding to the group of lines according to the test mode; determining a set of switching devices controlling the set of line connections;

the host generates control instructions based on the set of switching devices and the communication order; and sending the control instruction to the test equipment.

15. The method of claim 14, wherein the controlling the switching device to connect or disconnect the line with the battery comprises:

the testing equipment controls the communication of the group of switching devices according to the communication sequence based on the control instruction so as to enable the group of lines to be communicated with the battery to be communicated according to the communication sequence; and controlling the rest of the switching devices to be turned off under the condition that the group of switching devices are communicated.

16. The method of battery offline testing according to claim 12, further comprising:

the test equipment responds to a test completion signal and sends the test result to the host;

and the host responds to the received test result and sends a transfer instruction to the transfer equipment so that the transfer equipment transfers the battery to a target station according to the transfer instruction.

17. The method of claim 13, wherein the type parameter is a part number or a part number of the battery.