CN215375730U

CN215375730U - Detection device for short circuit pole group

Info

Publication number: CN215375730U
Application number: CN202121713283.6U
Authority: CN
Inventors: 于晓东; 王康
Original assignee: Svolt Energy Technology Co Ltd
Current assignee: Svolt Energy Technology Co Ltd
Priority date: 2021-07-26
Filing date: 2021-07-26
Publication date: 2021-12-31
Anticipated expiration: 2031-07-26

Abstract

The utility model relates to a detection device for short circuit utmost point group, short circuit utmost point group includes anodal ear and negative pole ear, detection device is including separating portion, electric connector and electric signal detector, separate the portion including a plurality of division boards, a plurality of division boards are used for separating one in anodal ear and the negative pole ear for a plurality of solitary partially of waiting to detect, electric connector's first end links to each other with the division board, the second end of electricity connection is used for being connected with another in anodal ear and the negative pole ear, electric signal detector sets up on electric connector. The method for separating the pole groups can quickly screen the pole pieces, so that the pole pieces with short-circuit faults in the pole groups can be found out, the repeated work of disassembling the pole groups and detecting the pole pieces one by one is avoided, the detection efficiency is improved, the operation is simpler, and the production stopping time of a production line due to product detection problems is reduced. When the short circuit pole group is in micro short circuit, the pole piece with short circuit can still be locked by the auxiliary device, and the detection accuracy is improved.

Description

Detection device for short circuit pole group

Technical Field

The disclosure relates to the technical field of lithium battery manufacturing, in particular to a detection device for a short-circuit pole group.

Background

At present, the application of lithium batteries in new energy equipment such as electric vehicles and the like is more and more extensive, and the market demand for lithium battery products with over-hard quality is also more and more increased.

In the process of producing the lithium battery, the main procedures comprise welding of a battery end cover, air tightness test of the lithium battery, short circuit test of the lithium battery, laser marking of the lithium battery, rejection of unqualified products and the like, and in the process of short circuit test of the lithium battery, the short circuit of a pole group and a battery core often occurs. When the short circuit is abnormal, the finished lithium battery needs to be disassembled, and when the lithium battery products are abnormal in batch, a large amount of disassembly is needed to find whether the short circuit fault is regular or not so as to find the defects in the production process, but the disassembly process needs to spend a large amount of time so that the period of analysis abnormity is prolonged, and the production line is forced to stop production. In addition, when the short-circuit pole group is a micro short circuit, a short-circuit point is not obvious, the position of the short-circuit pole piece can not be locked by visual observation during manual disassembly, and accurate and effective test analysis can not be carried out.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a detection device for short circuit utmost point group, this detection device can fix a position the pole piece that short circuit fault belongs to fast, can promote the efficiency and the rate of accuracy that detect.

In order to achieve the above object, the present disclosure provides a detection device for a short circuit pole group, the short circuit pole group includes a positive tab and a negative tab, the detection device includes a partition portion, an electrical connection member and an electrical signal detector, the partition portion includes a plurality of partition plates, the plurality of partition plates are used for partitioning one of the positive tab and the negative tab into a plurality of individual parts to be detected, a first end of the electrical connection member is connected with the partition plate, a second end of the electrical connection member is used for being connected with the other one of the positive tab and the negative tab, and the electrical signal detector is disposed on the electrical connection member.

Optionally, each of the partition plates includes a conductive layer and an insulating layer, the conductive layer being in contact with the corresponding portion to be detected.

Optionally, the partition portion further includes a support column and a base, the lower end of the support column is connected to the base, and the upper end of the support column is connected to the partition plate located at the lowest position among the plurality of partition plates.

Optionally, the partition part further includes a guide post, a lower end of the guide post is connected to a lowest partition plate of the plurality of partition plates, and an upper end of the guide post extends upward and passes through the remaining partition plates.

Optionally, the insulating layer is a polyvinyl chloride layer, a polyethylene layer, or a rubber layer.

Optionally, the first end of the electrical connector is formed with a plurality of individual connectors, and the number of the connectors is equal to the number of the partition plates and connected in a one-to-one correspondence.

Optionally, a shift switch is further disposed on the electrical connector, the shift switch has a plurality of shift positions, and each shift position is connected to a corresponding partition plate.

Optionally, the electrical connection is a wire.

Optionally, the electrical signal detector is a multimeter.

Through the technical scheme, the pole pieces can be rapidly screened by a method for separating the pole groups, so that the part of the pole groups with short-circuit faults is found out, the repeated work of disassembling the pole groups and detecting the pole pieces one by one is avoided, the operation is simpler, the detection efficiency is improved, and the production stopping time of a production line due to the product detection problem is reduced. In addition, when the short circuit pole group takes place the short circuit a little, can lock the pole piece that takes place the short circuit through this auxiliary device, compare in artifical manual scheme of visual observation when disassembling, this disclosure adopts the signal of telecommunication detector to detect each pole piece of pole group, can avoid the false retrieval, is favorable to improving the rate of accuracy that detects.

Additional features and advantages of the disclosure will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:

fig. 1 is a schematic perspective view of a detection device for a short-circuit pole group provided in an embodiment of the present disclosure, wherein a partition plate is in an unfolded state;

fig. 2 is a schematic perspective view of a detection device for a short-circuit pole group according to an embodiment of the present disclosure, wherein a separation plate is in a folded state;

fig. 3 is a schematic structural diagram of a partition plate of a detection device for a short-circuited electrode group according to an embodiment of the present disclosure;

fig. 4 is a schematic perspective view of a short-circuit pole group according to an embodiment of the present disclosure.

Description of the reference numerals

1-a partition; 11-a partition plate; 111-a conductive layer; 112-an insulating layer; 12-a support column; 13-a base; 14-guide posts; 2-an electrical connection; 21-a first end; 211-a linker; 22-a second end; 3-gear switch; 4-clamping jaw; 5-an electrical signal detector; 6-pole ear; 61-positive tab; 62-negative tab.

Detailed Description

The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.

In the present disclosure, unless otherwise specified, directional terms such as "upper, lower, left and right" are generally defined with reference to the drawing plane directions of the corresponding drawings. "inner and outer" refer to the inner and outer of the profile of the respective component.

Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

As shown in fig. 1 to 4, the present disclosure provides a short circuit electrode group detection device, the short circuit electrode group includes a positive electrode tab 61 and a negative electrode tab 62, the detection device includes a partition portion 1, an electrical connection member 2, and an electrical signal detector 5, the partition portion 1 includes a plurality of partition plates 11, the plurality of partition plates 11 are used for partitioning one of the positive electrode tab 61 and the negative electrode tab 62 into a plurality of individual parts to be detected, a first end 21 of the electrical connection member 2 is connected to the partition plate 11, a second end 22 of the electrical connection member is used for being connected to the other of the positive electrode tab 61 and the negative electrode tab 62, and the electrical signal detector 5 is disposed on the electrical connection member 2.

When the short-circuited pole group needs to be detected, one tab 6 of the short-circuited pole group is placed on the separating part 1, the tab 6 is separated into a plurality of parts to be detected by the separating plate 11, the condition of the short circuit of which part is detected is judged according to the indication number displayed by the electric signal detector 5 through detection of different parts to be detected, the part is separated for continuous detection, and the steps are repeated until the pole piece with the short circuit is detected.

The detection device for the short-circuit pole group mainly detects the internal resistance of the short-circuit pole group, so that the short-circuit condition of the pole group is deduced according to the resistance number, the normal pole group resistance standard is larger than 15 MOmega at normal temperature, the resistance is abnormal when the normal pole group resistance standard is smaller than 15 MOmega, and the short-circuit resistance is about 0.

When the detector is used for carrying out short circuit pole group repeating, the gear range can be 2-20M omega, when a normal product is measured, no data is displayed due to over-range generally, and when a short circuit product is measured, the displayed resistance value is smaller and is in the range of 1-8 k omega, so that whether the part to be detected is short-circuited or not is judged.

Through the technical scheme, the pole pieces can be rapidly screened by a method for separating the pole groups, so that the part of the pole groups with short-circuit faults is found out, the repeated work of disassembling the pole groups and detecting the pole pieces one by one is avoided, the operation is simpler, the detection efficiency is improved, and the production stopping time of a production line due to the product detection problem is reduced. Especially, when the number of detection layers is large, the thickness is large, and the area of a product is large, the rate can be obviously improved. In addition, when the short circuit pole group takes place the short circuit a little, can lock the pole piece that takes place the short circuit through this auxiliary device, compare in artifical manual scheme of visual observation when disassembling, this disclosure adopts the signal of telecommunication detector to detect each pole piece of pole group, can avoid the false retrieval, is favorable to improving the rate of accuracy that detects.

Alternatively, as an embodiment of the present disclosure, as shown in fig. 3, each of the partition plates 11 may include a conductive layer 111 and an insulating layer 112, the conductive layer 111 being in contact with the corresponding portion to be detected. When the separator 11 separates the short-circuit electrode group, the conductive layer 111 of the separator 11 contacts with the corresponding part to be detected, the insulating layer 112 contacts with the other part of the lower layer of the separator 11, so as to isolate the two parts to be detected, and the tab 6 to be detected contacting with the conductive layer 111 is connected with the other tab 6 through the conductive layer 111 and the electric connector 2, so that the separation and detection functions are unified.

Alternatively, as an embodiment of the present disclosure, as shown in fig. 1, the partition 1 may further include a supporting column 12 and a base 13, a lower end of the supporting column 12 is connected to the base 13, and an upper end of the supporting column 12 is connected to the partition 11 located at the lowest position among the plurality of partitions 11. Set up support column 12 and base 13 in the below of division board 11 and make division board 11 can keep certain distance with the operation mesa, because the short circuit utmost point group has certain thickness, so need certain height can cooperate better with utmost point group at the detection device that detects whether the utmost point group is short circuited, accomplish the separation of treating the utmost point ear 6 of detecting utmost point group.

Optionally, as an embodiment of the present disclosure, as shown in fig. 1 and fig. 2, the partition part 1 further includes a guide pillar 14, a lower end of the guide pillar 14 is connected to a separator 11 located at the lowest among the plurality of separators 11, an upper end of the guide pillar 14 extends upward and passes through the remaining separators 11, the separators 11 are disposed on the guide pillar 14 in a penetrating manner, when the detection device is not in use, the separators 11 can be slid along the guide pillar 14 to a fitted state, and when the detection device is in use, a gap between the separators 11 can be adjusted at any time to adapt to the tabs 6 with different thicknesses, so as to ensure that the tabs 6 to be detected can be sufficiently contacted with the conductive layer 111 of the separators 11. Meanwhile, the arrangement of the guide pillars 14 also plays a role in positioning, so that the partition plates 11 are prevented from sliding relatively in the use process, the edges of the partition plates 11 are kept flush, and errors caused by equipment reasons in the detection process are avoided.

Alternatively, as an embodiment of the present disclosure, the insulating layer 112 is a polyvinyl chloride layer, a polyethylene layer, or a rubber layer. The insulating layer 112 adopts a polyvinyl chloride layer, a polyethylene layer or a rubber layer, so that the insulating and separating effect on the pole lug 6 of the pole group is ensured, and the above materials are soft, so that the pole lug 6 can be protected from being damaged due to external force when the pole lug 6 is separated.

Alternatively, as an embodiment of the present disclosure, as shown in fig. 1 and 2, the first end 21 of the electrical connector 2 is formed with a plurality of individual contacts 211, and the number of the contacts 211 is equal to the number of the partition plates 11 and is connected in a one-to-one correspondence. Since there are a plurality of separators 11 in the present disclosure, and the tab 6 is divided into different portions by the plurality of separators 11, each separator 11 is designed as a separate line in order to be able to detect the different portions, so that different separators 11 can be connected to detect different portions of the tab 6, and find out the pole piece where the short-circuit fault is located.

As another embodiment of the present disclosure, the first end 21 of the electrical connector 2 is provided with the clamping jaw 4, and when the tab 6 to be detected on different partition plates 11 needs to be detected, the clamping jaw 4 can be clamped on the corresponding partition plate 11, so as to connect a circuit on the partition plate 11, and complete the detection of a part of the tab 6 connected with the partition plate 11.

Optionally, as an embodiment of the present disclosure, as shown in fig. 1 and 2, a shift switch 3 is further disposed on the electrical connector 2, the shift switch 3 has a plurality of shift positions, and each shift position engages with the corresponding partition plate 11. Since the detection needs to be performed for different parts of the tab 6, in addition to providing a plurality of individual contacts 211 at the first end 21 of the electrical connector 2, a shift switch 3 is provided on the electrical connector 2 to cooperate with the plurality of individual contacts 211 at the first end 21 of the electrical connector 2, and different shifts correspond to different lines formed by the partition plates 11, so that the switching between different partition plates 11 is performed by one switch.

Optionally, as an embodiment of the present disclosure, as shown in fig. 1 and 2, the second end 22 of the electrical connector 2 is provided with a clamping jaw 4 for clamping the positive tab 61 or the negative tab 62. The clamping jaw 4 is arranged at the second end 22 of the electric connector 2, and due to the structure of the clamping jaw 4, one end of the electric connector 2 can be conveniently connected with the lug 6 through the opening and closing of the clamping jaw 4 and the resetting force of the torsion spring, and the switching between the lugs 6 in different pole groups is completed. Meanwhile, the size of the opening of the clamping jaw 4 can be changed along with the thickness of the tab 6, so that the clamping jaw 4 can be well adapted to different tabs 6, always keeps a clamping state and is not easy to separate.

Alternatively, as an embodiment of the present disclosure, as shown in fig. 1 and 2, the electrical connector 2 is a wire. According to the needs and the working method of utmost point group short circuit detection work, because the material of wire is softer, electric connection piece 2 uses the wire can satisfy the compound mode of more nimble division board 11 and utmost point group, guarantees under various circumstances, can both accomplish the detection to utmost point ear 6 through each part of wire switch-on detection device.

Alternatively, as an embodiment of the present disclosure, as shown in fig. 1 and 2, the electrical signal detector 5 may be a multimeter. The universal meter is used as a multifunctional circuit detector and is widely applied to all aspects of production and life, the resistance value of the short circuit electrode group can be easily detected through the universal meter, and the measured value is clear at a glance.

As another embodiment of the present disclosure, the electrical signal detector 5 may also be an ohmmeter. In the disclosure, the staff judges the short circuit condition of the short circuit electrode group according to the measured resistance values of different parts of the short circuit electrode group, and the ohmmeter with more concentrated use function has a larger measured range and more accurate data aiming at the measurement of the single resistance value condition.

The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. In order to avoid unnecessary repetition, various possible combinations will not be separately described in this disclosure.

In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.

Claims

1. A detection device for a short-circuit pole group, the short-circuit pole group includes anodal ear and negative pole ear, characterized in that, detection device includes partition portion (1), electric connector (2) and electric signal detector (5), partition portion (1) includes a plurality of division boards (11), a plurality of division boards (11) are used for with anodal ear (61) with one of negative pole ear (62) is separated for a plurality of solitary wait to detect the part, first end (21) of electric connector (2) with division board (11) link to each other, the second end (22) of electricity connection be used for with anodal ear (61) with another one of negative pole ear (62) is connected, electric signal detector (5) set up on electric connector (2).

2. The detection device according to claim 1, characterized in that each of the separation plates (11) comprises a conductive layer (111) and an insulating layer (112), the conductive layer (111) being in contact with the corresponding portion to be detected.

3. The detecting device according to claim 1, wherein the partition (1) further comprises a support column (12) and a base (13), a lower end of the support column (12) is connected to the base (13), and an upper end of the support column (12) is connected to a partition (11) positioned lowermost among the plurality of partitions (11).

4. The detecting device according to claim 3, characterized in that the partition (1) further comprises a guide post (14), the lower end of the guide post (14) is connected to the partition (11) positioned lowermost among the plurality of partitions (11), and the upper end of the guide post (14) extends upward and passes through the remaining partitions (11).

5. The detection apparatus according to claim 2, wherein the insulating layer (112) is a polyvinyl chloride layer, a polyethylene layer, or a rubber layer.

6. Detection device according to any one of claims 1 to 5, characterised in that said first end (21) of said electrical connection (2) is formed with a plurality of individual contacts (211), and in that the number of said contacts (211) is equal to the number of said partitions (11) and connected in a one-to-one correspondence.

7. The detection device according to claim 6, characterized in that an index switch (3) is further arranged on the electrical connection member (2), the index switch (3) having a plurality of index positions, each index position engaging a corresponding separation plate (11).

8. A testing device according to any one of claims 1-5, characterized in that the second end (22) of the electrical connector (2) is provided with a clamping jaw (4) for clamping the positive tab (61) or the negative tab (62).

9. A testing device according to any one of claims 1-5, characterized in that the electrical connection (2) is a wire.

10. Detection apparatus according to any one of claims 1 to 5, characterized in that the electrical signal detector (5) is a multimeter.