CN218240364U

CN218240364U - Battery cover plate detection device

Info

Publication number: CN218240364U
Application number: CN202222014514.5U
Authority: CN
Inventors: 罗北宋
Original assignee: Dongguan Jusheng Intelligent Machinery Co ltd
Current assignee: Dongguan Jusheng Intelligent Machinery Co ltd
Priority date: 2022-08-01
Filing date: 2022-08-01
Publication date: 2023-01-06
Anticipated expiration: 2032-08-01

Abstract

The utility model belongs to the technical field of battery production equipment, in particular to a battery cover plate detection device, which comprises a jig body and a detection mechanism; the jig body is provided with a positioning cavity; two first conductive contacts are arranged in the positioning cavity and are respectively used for being conducted with the positive electrode and the negative electrode of the battery cover plate; the cross section of the first conductive contact is smaller than that of the battery cover plate pole mounting hole, two second conductive contacts extending out of the jig body are further arranged on the jig body, and the first conductive contact is communicated with the second conductive contact; the detection mechanism comprises a pressing mechanism and two groups of power connection mechanisms arranged at the bottom end of the pressing mechanism and used for detecting the electrical property of the positive electrode and the negative electrode of the battery cover plate respectively; the power connection mechanism comprises two groups of probe sets, wherein one group of probe sets, the first conductive contact, the second conductive contact and the electrical property detection system form a detection circuit, and the other group of probe sets, the positive pole or the negative pole of the battery cover plate, the surface of the battery cover plate and the electrical property detection system form another detection circuit.

Description

Battery cover plate detection device

Technical Field

The utility model belongs to the technical field of the battery detects, especially, relate to battery apron detection device.

Background

Batteries are used to store electricity and can discharge electrical energy. Power batteries are generally classified into pouch batteries, cylindrical batteries, and square-case batteries. The square-shell battery is characterized in that a battery core is arranged in a square aluminum shell, and then a top cover is covered on the opening of the square shell. Chinese patent publication No. CN216720098U discloses a battery cover plate, a battery cell, a battery, and an electric device. Wherein specifically disclose a battery apron, include: the top cover plate is provided with an outer side face and an inner side face which are opposite in the thickness direction, the inner side face is provided with a first side and a second side which are opposite in the central line direction L, the central line divides the first side into two first short sides and divides the second side into two second short sides, and first connecting parts are arranged on each first short side and each second short side; at least one first connecting part on one short side is staggered with at least one first connecting part on the other short side along the direction X perpendicular to the central line on the two first short sides or the two second short sides; the insulation board is provided with second connecting parts which are connected with the first connecting parts in a one-to-one correspondence mode. The top cover plate may be provided with functional components such as electrode terminals. The electrode terminals may be used to electrically connect with the electric core assembly for outputting or inputting electric energy of the battery cells. In some embodiments, a pressure relief mechanism for relieving the internal pressure of the battery cell when the internal pressure or temperature of the battery cell reaches a threshold value may be further disposed on the top cover plate. The top cover plate may be made of various materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., which are not limited in this embodiment. In some embodiments, an insulating plate may be further disposed on the inner side of the top cover plate 111, and the insulating plate may be used to isolate the electrical connection components inside the housing from the top cover plate, so as to reduce the risk of short circuit. Illustratively, the insulating plate may be plastic, rubber, or the like. Specifically, the top cover plate is provided with a stamping electrode mounting hole, and then the electrode can be assembled and welded on the top cover plate in sequence.

However, the hole on the top cover plate is formed by stamping, burrs and flanges are formed by stamping, after the electrode and the top cover plate are combined, the flanges and the burrs in the hole of the top cover plate can contact with the electrode, the burrs are initially not conducted with the electrode, and after the battery is assembled with the battery core, the burrs are conducted with the pole. Therefore, the electrode is conducted with the top cover plate, and the problem of potential safety hazard is caused. At present, whether the top cover plate is conducted with the electrode or not is not detected or even difficult.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a battery apron detection device solves the problem whether burr in the lamina tecti that hardly detects the battery at present switches on with the electrode.

In order to achieve the above object, an embodiment of the present invention provides a battery cover plate detection device, which includes a jig body and a detection mechanism; the jig body is provided with a positioning cavity for positioning the battery cover plate; two first conductive contacts are arranged in the positioning cavity and are respectively used for being conducted with the positive electrode and the negative electrode of the battery cover plate; the cross section of the first conductive contact is smaller than that of the battery cover plate pole mounting hole, two second conductive contacts extending out of the jig body are further arranged on the jig body, and the first conductive contact is communicated with the second conductive contact; the detection mechanism comprises a pressing mechanism and two groups of power connection mechanisms arranged at the bottom end of the pressing mechanism and used for detecting the electrical property of the positive electrode and the negative electrode of the battery cover plate respectively; the power connection mechanism comprises two groups of probe sets, wherein one group of probe sets, the first conductive contact, the second conductive contact and the electrical property detection system form a detection circuit, and the other group of probe sets, the positive pole or the negative pole of the battery cover plate, the surface of the battery cover plate and the electrical property detection system form another detection circuit.

Furthermore, the probe group, the first conductive contact, the second conductive contact and the current detection system form a current detection circuit, and the other probe group, the positive pole or the negative pole of the battery cover plate, the surface of the battery cover plate and the high-voltage detector form a voltage detection circuit.

Furthermore, the pressing mechanism comprises a first lifting mechanism and a second lifting mechanism, and the probe group in the voltage detection circuit is arranged at the bottom end of the first lifting mechanism; the second lifting mechanism comprises a lifting piece and a connecting plate, the connecting plate extends to the upper end of the jig body, and a probe in a probe assembly in the current detection system is connected to the bottom end of the connecting plate.

Furthermore, the first conductive contact extends into the pole mounting hole of the battery cover plate to form a gap of 0.05 mm-0.3 mm.

Further, a wire slot is formed in the jig body, and a conductor for connecting the first conductive contact and the second conductive contact is arranged in the wire slot.

Furthermore, the jig body is provided with two positioning cavities, two first conductive contacts are arranged in each positioning cavity, and each first conductive contact is connected with a second conductive contact.

Further, this internal stepped hole that is provided with of tool, the downthehole compression spring that is provided with of stepped, first conductive contact stretch into the stepped hole, and with compression spring butt, the lower extreme of first conductive contact is provided with spacing step spacing in the stepped hole.

The embodiment of the utility model provides an above-mentioned one or more technical scheme in the battery apron detection device have following technological effect at least:

1. the battery cover plate is positioned in the positioning cavity, the positive electrode and the negative electrode of the battery cover plate are respectively connected with the two first conductive contacts, the pressing mechanism of the detection mechanism drives the power connection mechanism to press down, so that the two probes in one probe set are respectively in contact with the second conductive contact and the positive electrode or the negative electrode of the battery cover plate, when the detection circuit detects that the probe set is open, the battery cover plate is bad, when a complete current loop can be detected, whether the positive electrode or the negative electrode is conducted with the top cover plate or not can be detected through the other detection circuit, if the probe set is conducted, conductors such as flanging burrs and the like are formed in the through hole of the top cover plate, and therefore, the problem whether the flanging burrs exist in the battery cover plate or not can be detected.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.

Fig. 1 is a structural diagram of a battery cover plate detection device provided by an embodiment of the present invention.

Fig. 2 is a structural diagram of a positioning jig of a battery cover plate detection device according to an embodiment of the present invention.

Fig. 3 is a cross-sectional view of a positioning jig of a battery cover plate detection device provided by the embodiment of the present invention.

Fig. 4 is a structural diagram of a detection mechanism of a battery cover plate detection device according to an embodiment of the present invention.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and intended to explain the embodiments of the present invention and are not to be construed as limiting the present invention.

In the description of the embodiments of the present invention, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings, which is only for convenience in describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element so indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly, e.g., as fixed or detachable connections or as an integral part; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the embodiments of the present invention can be understood by those skilled in the art according to specific situations.

In an embodiment of the present invention, referring to fig. 1 to 4, the battery cover plate detection device is applied to a battery cover plate assembly welding line. It includes a jig body 100 and a detection mechanism 200. The jig body 100 is provided with a positioning cavity 101 for positioning the battery cover plate. Two first conductive contacts 110 are disposed in the positioning cavity 101, and are respectively used for conducting with the positive electrode and the negative electrode of the battery cover plate. The cross-section of the first conductive contact 110 is smaller than the cross-section of the battery cover post mounting hole, so that the first conductive contact 110 can extend into the battery cover post mounting hole. The fixture body 100 is further provided with two second conductive contacts 120 extending out of the fixture body, wherein one of the first conductive contacts 110 is conducted with one of the second conductive contacts 120. The detection mechanism 200 includes a pressing mechanism 210 and two sets of power connection mechanisms 220 disposed at the bottom end of the pressing mechanism 210, and are respectively used for detecting the electrical properties of the positive electrode and the negative electrode of the battery cover plate. The power connection mechanism 220 includes two sets of probe sets 221, wherein one set of probe set 221 forms a detection circuit with the first conductive contact 110 and the second conductive contact 120, and the electrical detection system (not shown) and the other set of probe set 221 forms another detection circuit with the positive or negative post of the battery cover, the surface of the battery cover, and the electrical detection system (not shown). In this embodiment, after the assembly and welding of the battery top cover plate are completed, the insulation performance between the positive and negative poles in the battery top cover plate and the surface of the top cover plate needs to be detected. Specifically, the battery cover plate is positioned in the positioning cavity 101, the positive electrode and the negative electrode of the battery cover plate are respectively connected with the two first conductive contacts 110, the pressing mechanism 210 of the detection mechanism 200 drives the power connection mechanism 220 to press down, so that the two probes in the probe set 221 in one group are respectively contacted with the second conductive contact 120 and the positive electrode or the negative electrode of the battery cover plate, when an open circuit is detected in the detection circuit, the battery cover plate is bad, or an insulating object is arranged on the inner surfaces of the positive electrode and the negative electrode. When a complete current loop is detected. If the current loop is complete, whether the anode or the cathode is conducted with the top cover plate can be detected through another detection circuit. If the hole of lamina tecti has turn-ups and burr, then burr and turn-ups can contact with first conductive contact 110, then can detect it through electrical property detection system and be switched on, if do not have burr and turn-ups, the lamina tecti is with first conductive contact 110 disconnection, then the battery lamina tecti is qualified, consequently can detect out the problem that whether there is the turn-ups burr in the lamina tecti through battery cover detection device. In addition, the first group of electrical property detection system can detect whether the first conductive contact 110 is conducted with the positive and negative poles, and can detect whether burrs and flanges contacted with the first conductive contact 110 exist in the hole of the battery top cover plate.

Further, referring to fig. 1 and 4, a set of probe sets 221 forms a current sensing circuit with the first conductive contact 110 and the second conductive contact 120, and the current sensing system. Therefore, whether the positive pole post or the negative pole post of the battery cover plate and the first conductive contact 110 and the second conductive contact 120 form a complete current loop is detected through the current detection system, if the complete current loop can be detected, the current loop is conducted, otherwise, the current loop is open. The other set of probe sets 221 forms a voltage detection circuit with the positive or negative post of the battery cover plate, the surface of the battery cover plate, and the high voltage detector. High voltage is applied through a high voltage detector, and if the first conductive contact 110 and the battery top cover plate can be broken down to form a current loop, burrs and flanging exist in the inner hole of the top cover plate.

Further, referring to fig. 4, the pressing mechanism 210 includes a first elevating mechanism 211 and a second elevating mechanism 212, and the probe set in the voltage detection circuit is disposed at the bottom end of the first elevating mechanism 211. The second elevating mechanism 212 includes an elevating member (not shown in the drawings) and a connecting plate extending to the upper end of the jig body 100, and a probe of the probe group 221 in the current detection system is connected to the bottom end of the connecting plate. In this embodiment, the detection is that the first lifting mechanism 211 and the second lifting mechanism 212 can be lowered simultaneously, so that the detection of current conduction can be realized, and after the current detection is completed, the second lifting mechanism 212 can be lifted upwards, so that the detection of voltage can be completed, and mutual interference can be avoided.

Further, the first conductive contact 110 extends into the pole mounting hole of the battery cover plate, and a gap of 0.05mm to 0.3mm is formed. In this embodiment, the burr formed by stamping the top cover plate can directly contact the first conductive contact 110, so as to improve the accuracy of detection.

Further, a wire groove (not shown) is formed in the jig body 100, and a conductor connecting the first conductive contact 110 and the second conductive contact 120 is disposed in the wire groove.

Further, referring to fig. 2, the fixture body 110 is provided with two positioning cavities 101, two first conductive contacts 110 are disposed in each positioning cavity 101, and each first conductive contact 110 is connected to a second conductive contact 120. Therefore, the detection of the battery top cover plate can be simultaneously performed, and the detection efficiency is improved.

Further, referring to fig. 3, a stepped hole 103 is formed in the jig body 100, a compression spring 104 is arranged in the stepped hole 103, the first conductive contact 110 extends into the stepped hole 103 and abuts against the compression spring 104, and a limiting step limited in the stepped hole 103 is arranged at the lower end of the first conductive contact 110. During detection, the lifting mechanism 210 can drive the power connection mechanism 220 to press down, so that the compression spring 104 can be compressed, and the first conductive contact 110 can be better contacted with the positive and negative poles of the battery top cover plate to be conducted.

The present invention is not limited to the above preferred embodiments, and any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. A battery cover plate detection device comprises a jig body and a detection mechanism; the jig body is provided with a positioning cavity for positioning the battery cover plate; the battery cover plate is characterized in that two first conductive contacts are arranged in the positioning cavity and are respectively used for being conducted with the positive electrode and the negative electrode of the battery cover plate; the cross section of the first conductive contact is smaller than that of the battery cover plate pole mounting hole, two second conductive contacts extending out of the jig body are further arranged on the jig body, and one first conductive contact is communicated with one second conductive contact; the detection mechanism comprises a pressing mechanism and two groups of power connection mechanisms arranged at the bottom end of the pressing mechanism and used for detecting the electrical property of the positive electrode and the negative electrode of the battery cover plate respectively; the power connection mechanism comprises two groups of probe groups, wherein one group of probe groups, the first conductive contact, the second conductive contact and the electrical detection system form a detection circuit, and the other group of probe groups, the positive pole or the negative pole of the battery cover plate, the surface of the battery cover plate and the electrical detection system form another detection circuit.

2. The battery cover plate detection device according to claim 1, wherein: the probe set, the first conductive contact, the second conductive contact and the current detection system form a current detection circuit, and the other probe set, the positive pole or the negative pole of the battery cover plate, the surface of the battery cover plate and the high-voltage detector form a voltage detection circuit.

3. The battery cover plate detection device according to claim 2, wherein: the pressing mechanism comprises a first lifting mechanism and a second lifting mechanism, and the probe group in the voltage detection circuit is arranged at the bottom end of the first lifting mechanism; the second lifting mechanism comprises a lifting piece and a connecting plate, the connecting plate extends to the upper end of the jig body, and one probe in the probe group in the current detection system is connected to the bottom end of the connecting plate.

4. The battery cover plate detection device according to claim 1, wherein: the first conductive contact extends into the pole mounting hole of the battery cover plate to form a gap of 0.05-0.3 mm.

5. The battery cover plate detection device according to any one of claims 1 to 4, characterized in that: the jig is characterized in that a wire groove is formed in the jig body, and a conductor for connecting the first conductive contact and the second conductive contact is arranged in the wire groove.

6. The battery cover plate detection device according to any one of claims 1 to 4, characterized in that: the jig body is provided with two positioning cavities, two first conductive contacts are arranged in each positioning cavity, and each first conductive contact is connected with one second conductive contact.

7. The battery cover plate detection device according to any one of claims 1 to 4, characterized in that: the jig is characterized in that a step hole is formed in the jig body, a compression spring is arranged in the step hole, the first conductive contact extends into the step hole and is abutted against the compression spring, and a limiting step which is limited in the step hole is arranged at the lower end of the first conductive contact.