Battery parallel formation test system and switching circuit board thereof
Technical Field
The utility model relates to a lithium ion battery production facility technical field, concretely relates to battery parallelly connected formation test system and switching circuit board thereof.
Background
In the production process of the lithium ion battery, formation is an extremely important process. The formation refers to the process of first charge and discharge of the battery after liquid injection, and the main function of the formation is to form a compact SEI film on the surface of the negative electrode through the electrochemical reaction in the first charge, and simultaneously eliminate the gas generated in the process of forming the SEI film, so as to prevent the battery from generating bad phenomena such as gas expansion and shell bulging. The voltage of the battery needs to be tested before and after the battery is formed, so that the battery which does not meet the requirement can be taken out, and the defective products are prevented from flowing into the next process.
At present, in order to improve the efficiency of formation, the common method is to place a plurality of batteries on a tray, adopt the mode of connecting in parallel to form a plurality of batteries, because the anodal same positive polar line of all connecting of a plurality of batteries, the negative pole all connects in same negative pole line, such tray structure only is fit for forming the use, need take off the battery from the tray when needs detect battery voltage, then test one by one, influence production efficiency and production quality.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to the disappearance that prior art exists, provide a parallelly connected formation of battery test system and switching circuit board thereof, its batchization that can realize the battery becomes and voltage detection in batches, the production efficiency of very big improvement battery reduces the cost of labor.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a battery parallelization formation test system, comprising:
the battery protection device comprises a tray for placing batteries, wherein at least one switching circuit board is arranged on the tray, the switching circuit board is provided with a plugging end, the plugging end is provided with a first switching terminal and a plurality of second switching terminals, the switching circuit board is provided with a plurality of groups of first contacts and second contacts which are used for being electrically connected with tabs of the batteries, the first contacts are electrically connected with the first switching terminal through first wiring, and the first contacts are respectively and electrically connected with the corresponding second switching terminals through independent second wiring;
the formation interface is electrically connected with the formation cabinet, a first formation terminal corresponding to the first switching terminal and a plurality of second formation terminals corresponding to the second switching terminals are arranged in the formation interface, the first formation terminal is electrically connected with a first electrode of the formation cabinet, and the plurality of second formation terminals are electrically connected with a second electrode of the formation cabinet;
the voltage testing device comprises a testing interface electrically connected with voltage testing equipment, wherein a first testing terminal corresponding to a first switching terminal and a plurality of second testing terminals corresponding to second switching terminals are arranged in the testing interface, the voltage testing equipment is provided with a plurality of testing channels, and the plurality of second testing terminals are respectively electrically connected with the corresponding testing channels.
As an optimal scheme, the switching circuit board is provided with a plurality of switching circuit boards, the switching circuit boards are arranged on the tray along the length direction of the switching circuit boards at parallel intervals, and the plugging ends of the switching circuit boards extend out towards the same side.
As a preferred scheme, a plurality of battery placing positions are arranged on the tray on one side of the switching circuit board, and each battery placing position corresponds to one group of the first contact and the second contact.
As a preferred scheme, every the one end that the position was put to the battery all is equipped with a set of utmost point ear clamp, and the utmost point ear clamp of the same group all includes first utmost point ear clamp and the second utmost point ear clamp that sets up side by side, and the orientation of the opening of the first utmost point ear clamp of the same group and second utmost point ear clamp is all the same, every all be equipped with first conducting block in the first utmost point ear clamp, every all be equipped with the second conducting block in the second utmost point ear clamp, first conducting block and second conducting block are connected with corresponding first contact and second contact electricity respectively.
As a preferred scheme, a switching circuit board mounting groove is formed in the tray, and the switching circuit board is fixedly mounted in the switching circuit board mounting groove through a fixing screw.
As a preferred scheme, a plurality of mounting through holes are formed in the switching circuit board, a plurality of fixing holes corresponding to the mounting through holes are formed in the mounting grooves of the switching circuit board, and the switching circuit board sequentially penetrates through the mounting through holes and the fixing holes through screws to be mounted on the tray.
As a preferable scheme, a handle is arranged on one end side face of the tray.
As a preferable scheme, the first switching terminal, the first formation terminal and the first test terminal are all negative terminals, the second switching terminal, the second formation terminal and the second test terminal are all positive terminals, the first contact is a negative contact, the second contact is a positive contact, the first electrode is a negative power supply electrode, and the second electrode is a positive power supply electrode.
As a preferable scheme, the first switching terminal, the first formation terminal and the first test terminal are all positive terminals, the second switching terminal, the second formation terminal and the second test terminal are all negative terminals, the first contact is a positive contact, the second contact is a negative contact, the first electrode is a positive power supply electrode, and the second electrode is a negative power supply electrode.
The switching circuit board is provided with a plug end, the plug end is provided with a first switching terminal and a plurality of second switching terminals, a plurality of groups of first contacts and second contacts which are used for being electrically connected with tabs of batteries are arranged on the switching circuit board, the first contacts are electrically connected with the first switching terminal through first wiring, and the first contacts are respectively electrically connected with the corresponding second switching terminals through independent second wiring.
The utility model discloses the working process is as follows:
firstly, the battery to be formed is clamped on the tray through the tab clamp, so that the plug-in end of the switching circuit board on the tray is connected to a test interface of the voltage test equipment, the corresponding battery is respectively detected through a test channel on the voltage test equipment, the test result of each battery is directly displayed through the voltage test equipment, and a worker can take out the battery which is unqualified in test according to the test result and replace the battery with another battery to be tested, so that the battery which is unqualified in test flows into the forming process, and the bad conditions of gas expansion, even explosion and the like in the forming process of the battery which is unqualified are avoided; then, the qualified battery is connected to a formation interface electrically connected with the formation cabinet through a plug-in end of a switching circuit board on the tray, so that batch formation is realized; and finally, the battery after formation is accessed to a test interface of the voltage test equipment through the plug-in end of the adapter circuit board on the tray again, the voltage test is carried out on the battery after formation, and the battery which is unqualified in formation is prevented from flowing into the next procedure, so that the shipment quality of the battery is improved.
Compared with the prior art, the utility model obvious advantage and beneficial effect have, particularly speaking, it sets up a first switching terminal and a plurality of second switching terminal to hold through the grafting at the switching circuit board, make the second contact on the switching circuit board all be connected with first switching terminal electricity, first contact is connected with the second switching terminal electricity that corresponds through independent second wiring respectively, thereby can become to set up the formation interface that corresponds with the grafting end on the cabinet, set up the test interface that corresponds with the grafting end on voltage test equipment, thereby make the tray both can be used to the batched formation of battery, also can be used to the batch voltage detection of battery, very big improvement the formation of battery, efficiency of software testing, the production efficiency of battery is improved, the labor cost is reduced, the shipment quality of battery is improved.
To more clearly illustrate the structural features and technical means of the present invention and the specific objects and functions achieved thereby, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments:
drawings
Fig. 1 is a schematic view of a tray assembly structure according to an embodiment of the present invention;
FIG. 2 is an exploded view of the tray according to the embodiment of the present invention;
FIG. 3 is an enlarged schematic view at A in FIG. 2;
fig. 4 is a schematic diagram of a wiring structure of the patch panel according to an embodiment of the present invention;
fig. 5 is an enlarged schematic view at B in fig. 4.
The attached drawings indicate the following:
10. bottom plate 11, battery placing position 12 and adapter circuit board mounting groove
13. Fixing hole 14, first polar ear clip 15 and second polar ear clip
16. Insulating pad 17, handle 20, adapter circuit board
21. Mounting through hole 22, plug-in terminal 23, first contact
24. Second contact 25, first wiring 26, and second wiring
27. First transfer terminal 28, second transfer terminal 30, and formation interface
31. First and second chemical conversion terminals 32 and 33, and first electrode
34. Second electrode 40, test interface 41, first test terminal
42. Second test terminal 43, test channel
Detailed Description
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the indicated position or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood as appropriate by those of ordinary skill in the art.
First, referring to fig. 1 to 5, a battery parallel formation testing system includes a tray 10 for placing batteries, a formation interface 30 electrically connected to a formation cabinet, and a testing interface 40 electrically connected to a voltage testing device.
As shown in fig. 1 to 3, a plurality of adapter circuit boards 20 are disposed on the tray 10, the adapter circuit boards 20 are disposed on the tray 10 at intervals along the length direction, the insertion ends 22 of the adapter circuit boards 20 extend out toward the same side, the tray 10 is disposed with an adapter circuit board mounting groove 12, and the adapter circuit boards 20 are fixedly mounted in the adapter circuit board mounting groove 12 by fixing screws. Specifically, be equipped with a plurality of mounting hole 21 on the switching circuit board 20, be equipped with a plurality of fixed orificess 13 that correspond with mounting hole 21 in the switching circuit board mounting groove 12, switching circuit board 20 passes mounting hole 21 and fixed orifices 13 through the screw in proper order and installs on tray 10. In this embodiment, eight switching circuit boards 20 are disposed on the tray 10, and it should be understood that one or more switching circuit boards 20 may be disposed as required. In order to facilitate the taking and placing of the tray 10, a handle 17 is arranged on one end side of the tray 10. The tray 10 on one side of the switching circuit board 20 is provided with a plurality of battery placing positions 11, and the battery placing positions 11 are provided with insulating pads 16.
As shown in fig. 4-5, the adaptor circuit board 20 has a plug end 22, the plug end 22 is provided with a first adaptor terminal 27 and a plurality of second adaptor terminals 28, the adaptor circuit board 20 is provided with a plurality of sets of first contacts 23 and second contacts 24 for electrically connecting with tabs of a battery, the first contacts 23 are electrically connected with the first adaptor terminals 27 through first wires 25, and the first contacts 23 are electrically connected with the corresponding second adaptor terminals 28 through independent second wires 26. One end of each battery placing position 11 is provided with a group of pole ear clips, the pole ear clips in the same group comprise a first pole ear clip 14 and a second pole ear clip 15 which are arranged side by side, the directions of openings of the first pole ear clip 14 and the second pole ear clip 15 in the same group are the same, a first conductive block is arranged in each first pole ear clip 14, a second conductive block is arranged in each second pole ear clip 15, and the first conductive block and the second conductive block are respectively and electrically connected with a corresponding first contact 23 and a corresponding second contact 24;
a first formation terminal 31 corresponding to the first switching terminal 27 and a plurality of second formation terminals 32 corresponding to the second switching terminal 28 are arranged in the formation interface 30, the first formation terminal 31 is electrically connected with a first electrode 33 of the formation cabinet, and the plurality of second formation terminals 32 are electrically connected with a second electrode 34 of the formation cabinet;
the test interface 40 is provided with a first test terminal 41 corresponding to the first adapter terminal 27 and a plurality of second test terminals 42 corresponding to the second adapter terminal 28, the voltage test equipment has a plurality of test channels 43, and the plurality of second test terminals 42 are electrically connected to the corresponding test channels 43 respectively.
The utility model also provides a battery connects in parallel becomes switching circuit board 20 for test system, switching circuit board 20 has grafting end 22, grafting end 22 is equipped with a first switching terminal 27 and a plurality of second switching terminal 28, be equipped with the multiunit on the switching circuit board 20 and be used for the first contact 23 and the second contact 24 of being connected with the utmost point ear electricity of battery, first contact 23 all with first switching terminal 27 electric connection through first wiring 25, first contact 23 through independent second wiring 26 respectively with the second switching terminal 28 electric connection that corresponds.
In this embodiment, the first transfer terminal 27, the first formation terminal 31, and the first test terminal 41 are both negative terminals, the second transfer terminal 28, the second formation terminal 32, and the second test terminal 42 are both positive terminals, the first contact 23 is a negative contact, the second contact 24 is a positive contact, the first electrode 33 is a power negative electrode, the second electrode 34 is a power positive electrode, the first tab clip 14 is a negative tab clip, the second tab clip 15 is a positive tab clip, the first conductive piece is a negative conductive piece, and the second conductive piece is a positive conductive piece.
It should be noted that, the present invention can also be configured as follows: first switching terminal 27, first formation terminal 31 and first test terminal 41 are positive terminals, second switching terminal 28, second formation terminal 32 and second test terminal 42 are negative terminals, first contact 23 is the positive contact, second contact 24 is the negative contact, first electrode 33 is the power positive pole, second electrode 34 is the power negative pole, first utmost point ear presss from both sides 14 and is the anodal ear clamp, second utmost point ear presss from both sides 15 and is the anodal ear clamp, first conducting block is anodal conducting block, the second conducting block is the negative pole conducting block.
The utility model discloses the working process is as follows:
firstly, the battery to be formed is clamped on the tray 10 through the tab clamp, so that the insertion end 22 of the switching circuit board 20 on the tray 10 is connected to the test interface 40 of the voltage test equipment, the corresponding battery is respectively detected through the test channel 43 on the voltage test equipment, the test result of each battery is directly displayed through the voltage test equipment, and a worker can take out the battery which is unqualified in test according to the test result and replace the battery with another battery to be tested, so that the battery which is unqualified in test is prevented from flowing into the forming process, and the battery which is unqualified is prevented from generating bad conditions such as gas expansion and even explosion in the forming process; then, the qualified battery is connected to the formation interface 30 electrically connected with the formation cabinet through the plug-in end 22 of the switching circuit board 20 on the tray 10, so as to realize batch formation; finally, the battery after formation is connected to the test interface 40 of the voltage test equipment through the plug-in end 22 of the adapter circuit board 20 on the tray 10 again, the voltage test is performed on the battery after formation, and the battery which is not qualified in formation is prevented from flowing into the next procedure, so that the shipment quality of the battery is improved.
To sum up, the utility model discloses an end 22 of pegging graft at switching circuit board 20 sets up a first switching terminal 27 and a plurality of second switching terminal 28, make second contact 24 on the switching circuit board 20 all be connected with first switching terminal 27 electricity, first contact 23 is connected with second switching terminal 28 electricity that corresponds through independent second wiring 26 respectively, thereby can become to set up formation interface 30 that corresponds with grafting end 22 on the cupboard, set up test interface 40 that corresponds with grafting end 22 on voltage test equipment, thereby make tray 10 both can be used to the batched one-tenth of battery, also can be used to the batch voltage detection of battery, very big improvement the formation of battery, efficiency of software testing, the production efficiency of battery is improved, the cost of labor is reduced, the shipment quality of battery is improved.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, so any modifications, equivalent replacements, improvements, etc. made to the above embodiments by the technology of the present invention are all within the scope of the technical solution of the present invention.