Search

CN-224216805-U - Battery cell insulation testing device

CN224216805UCN 224216805 UCN224216805 UCN 224216805UCN-224216805-U

Abstract

The utility model provides an electric core insulation testing device which comprises a restraint tray and an insulation testing mechanism, wherein the restraint tray comprises a support, insulating pieces and metal pieces, the insulating pieces and the metal pieces are arranged between the support, the adjacent two insulating pieces are arranged at intervals to form a containing space for arranging an electric core to be tested, the metal pieces are positioned on one side of the insulating pieces, which is away from the containing space, of the insulating pieces, the electric core to be tested is firmly arranged in the containing space by the restraint tray to ensure the accuracy and stability of testing, the insulation testing mechanism comprises a tester, a first electric connecting piece and a second electric connecting piece, the first electric connecting piece is electrically connected with the tester, the first electric connecting piece is in contact with a shell of the electric core to be tested, the second electric connecting piece is in contact with the metal pieces, which are close to any side of the electric core to be tested, and the resistance or current between the shell of the electric core and the metal pieces can be measured rapidly and accurately, so that whether the insulation performance of the electric core is good can be judged, the insulation defect can be found timely, and the production efficiency and the product quality can be improved.

Inventors

  • WANG YUHAO
  • PENG YUHUI
  • YAN WEI

Assignees

  • 欣旺达动力科技股份有限公司

Dates

Publication Date
20260508
Application Date
20250401

Claims (10)

  1. 1. A cell insulation test device, comprising: The restraint tray (10), the restraint tray (10) comprises a bracket (101), and an insulating part (102) and a metal part (103) which are arranged between the bracket, wherein two adjacent insulating parts (102) are arranged at intervals to form a containing space for arranging a cell to be tested between the two insulating parts, and the metal part (103) is positioned at one side of the insulating part (102) away from the containing space; The insulation testing mechanism (20) comprises a tester (201) and a first electric connecting piece (202) and a second electric connecting piece (203) which are electrically connected with the tester (201), wherein the first electric connecting piece (202) is used for being in contact with the shell of the electric core (30) to be tested, and the second electric connecting piece (203) is used for being in contact with the metal piece (103) which is close to any side of the electric core (30) to be tested, so that the resistance or the current between the shell of the electric core to be tested and the metal piece (103) can be measured.
  2. 2. The cell insulation test device according to claim 1, further comprising a mounting frame (40) and a first driving mechanism (50) provided to the mounting frame (40); The first driving mechanism (50) is connected with the first electric connecting piece (202) and the second electric connecting piece (203) and is used for driving the first electric connecting piece (202) and the second electric connecting piece (203) to move towards the restraint tray (10) so as to be in contact with the shell of the battery cell (30) to be tested and the metal piece (103).
  3. 3. The device according to claim 2, further comprising at least one electrical connector holder (70), wherein the electrical connector holder (70) is connected to the first driving mechanism (50), and the first electrical connector (202) and the second electrical connector (203) are disposed on the electrical connector holder (70), so that the first driving mechanism (50) drives the electrical connector holder (70) to move towards the restraint tray (10), so that the first electrical connector (202) and the second electrical connector (203) are abutted to the housing of the electrical core (30) to be tested and the metal piece (103).
  4. 4. The cell insulation test device according to claim 2, further comprising a second driving mechanism (60), the second driving mechanism (60) being provided to the mounting frame (40); The second driving mechanism (60) is connected with the restraint tray (10), and is used for driving the restraint tray (10) to move towards the first electric connecting piece (202) and the second electric connecting piece (203) through the second driving mechanism (60), so that the shell of the battery cell (30) to be tested and the metal piece (103) are in contact with the first electric connecting piece (202) and the second electric connecting piece (203).
  5. 5. A cell insulation test device according to claim 3, characterized in that the cell insulation test device further comprises a third drive mechanism, which is provided to the mounting frame (40); the electric connector bracket (70) is connected with the third driving mechanism, and is used for driving the electric connector bracket (70) to translate along the bearing plane of the restraint tray (10) through the third driving mechanism so as to enable the first electric connector (202) to be in contact with the shells of the to-be-tested battery cells (30) at different positions.
  6. 6. The cell insulation testing device of claim 4, further comprising a jacking platform; the jacking platform is arranged on the mounting frame (40), the restraint tray (10) is arranged on the jacking platform, the second driving mechanism (60) is arranged on the mounting frame (40) and is in driving connection with the restraint tray (10), and the second driving mechanism (60) and the jacking platform are positioned on the same side of the restraint tray (10); The first driving mechanism (50) is arranged on the mounting frame (40) and is positioned on one side, deviating from the second driving mechanism (60), of the restraint tray (10), the first driving mechanism (50) is connected with the first electric connecting piece (202) and the second electric connecting piece (203) on one side, close to the restraint tray (10), of the first driving mechanism (50), and the first driving mechanism (50) is used for driving the first electric connecting piece (202) and the second electric connecting piece (203) to move towards the restraint tray (10).
  7. 7. The device according to any one of claims 1 to 6, wherein a side surface of the metal member (103) facing the insulating member (102) is a limiting surface, the limiting surface of the metal member (103) is provided with a limiting groove (1031), and a side surface of the insulating member (102) facing the limiting surface is convexly provided with a limiting block (1021) adapted to the limiting groove (1031); The two opposite ends of the metal piece (103) are provided with protruding portions (1032) towards the limiting surface, the protruding portions (1032) are provided with limiting portions (10321) on one side, away from the insulating piece (102), of the protruding portions (10321) and are parallel to the limiting surface, and the protruding portions (1032) and the limiting surface are used for wrapping the edge of the insulating piece (102).
  8. 8. The cell insulation test device according to any of claims 1 to 6, wherein the insulation test mechanism further comprises a channel switching plate (204), the channel switching plate (204) having an output interface (2041) and at least two acquisition interfaces (2042); the channel switching plate (204) is used for being electrically connected with the tester (201) through the output interface (2041); At least one acquisition interface (2042) is used for being electrically connected with one end of the first electric connecting piece (202), and the other end of the first electric connecting piece (202) is used for being abutted with the shell of the electric core (30) to be tested; At least one other collecting interface (2042) is used for being electrically connected with one end of the second electric connecting piece (203), and the other end of the second electric connecting piece (203) is used for being abutted with the metal piece (103).
  9. 9. The cell insulation test device according to claim 8, wherein the number of first electrical connectors (202) is at least one and the number of second electrical connectors (203) is at least two; The acquisition interface (2042) comprises at least one first acquisition interface (2042 a) and at least two second acquisition interfaces (2042 b), the first acquisition interface (2042 a) is used for being electrically connected with the first electrical connector (202), and the second acquisition interface (2042 b) is used for being electrically connected with the second electrical connector (203); When the first electric connecting piece (202) is abutted with the shell of the battery cell (30) to be tested, a first detection channel is formed when one second electric connecting piece (203) is abutted with the metal piece (103) on one side of the battery cell (30) to be tested; When the first electric connecting piece (202) is abutted with the shell of the battery cell (30) to be tested, a second detection channel is formed when the other second electric connecting piece (203) is abutted with the metal piece (103) on the other side of the battery cell (30) to be tested; The channel switching plate (204) is used for switching between the first detection channel and the second detection channel.
  10. 10. The cell insulation test device according to claim 8, wherein the cells (30) to be tested are arranged in an array of M rows by N columns on the restraint tray (10), wherein M is greater than or equal to 1, N is greater than or equal to 1; In each row, the number of the first electric connectors (202) is N, each first electric connector (202) is used for being arranged in one-to-one correspondence with each electric core (30) to be tested, and the number of the second electric connectors (203) is N+1 and is arranged at intervals with the first electric connectors (202); In each row, the collection interfaces comprise N first collection interfaces (2042 a) and n+1 second collection interfaces (2042 b), the first collection interfaces (2042 a) are used for being electrically connected with the first electrical connectors (202), and the second collection interfaces (2042 b) are used for being electrically connected with the second electrical connectors (203); The shell of any one of the to-be-tested battery cells (30) is used for being abutted against one of the first electric connecting pieces (202), when the metal piece (103) on any side of the to-be-tested battery cell (30) is used for being abutted against one of the second electric connecting pieces (203), a first detection channel is formed, and when the metal piece (103) on the other side of the to-be-tested battery cell (30) is used for being abutted against the other of the second electric connecting pieces (203), a second detection channel is formed; The number of the first detection channels is the same as the number of the battery cells (30) to be detected, and the number of the second detection channels is the same as the number of the battery cells (30) to be detected.

Description

Battery cell insulation testing device Technical Field The utility model belongs to the field of battery cell testing, and particularly relates to a battery cell insulation testing device. Background In the production process of the battery cell, the battery cell is batched into activated battery cells by adopting battery cell formation component testing equipment, namely, voltage is loaded between the positive electrode post and the negative electrode post of the battery cell by utilizing an external power supply, and the accurate and stable voltage and current can ensure that the inside of the battery cell is activated stably and fully to form stable benign circulation electrochemical reaction. In the process of forming and capacity division of the battery cell, if the battery cell shell is connected with an external supporting metal structure, the risk of short circuit easily exists. Disclosure of utility model The embodiment of the utility model provides a battery cell insulation testing device, which is used for solving the problem of short circuit smoke and fire of a metal layer plate and a battery cell shell caused by foreign matters when the battery cell is divided into components. In order to solve the technical problems, the utility model is realized as follows: the embodiment of the application provides a battery cell insulation testing device, which comprises a restraint tray, a battery cell insulation testing device and a battery cell insulation testing device, wherein the restraint tray comprises a bracket, insulating pieces and metal pieces, wherein the insulating pieces and the metal pieces are arranged between the bracket, two adjacent insulating pieces are arranged at intervals to form a containing space for arranging a battery cell to be tested between the two insulating pieces, and the metal pieces are positioned at one side, away from the containing space, of the insulating pieces; The insulation testing mechanism comprises a tester, a first electric connecting piece and a second electric connecting piece, wherein the first electric connecting piece and the second electric connecting piece are electrically connected with the tester, the first electric connecting piece is used for being in contact with the shell of the battery cell to be tested, and the second electric connecting piece is used for being in contact with the metal piece which is close to any side of the battery cell to be tested, so that the resistance or the current between the shell of the battery cell to be tested and the metal piece can be measured. Optionally, the cell insulation testing device further comprises a mounting frame and a first driving mechanism arranged on the mounting frame; the first driving mechanism is connected with the first electric connecting piece and the second electric connecting piece and is used for driving the first electric connecting piece and the second electric connecting piece to move towards the restraint tray so as to be contacted with the shell of the battery cell to be tested and the metal piece. Optionally, the electrical core insulation testing device further includes at least one electrical connector support, the electrical connector support connect in the first actuating mechanism, first electrical connector with the second electrical connector is located the electrical connector support, so that through the first actuating mechanism drives the electrical connector support is towards restraint tray motion, so that first electrical connector with the second electrical connector with the shell of electrical core that awaits measuring and metalwork butt. Optionally, the electrical core insulation testing device further comprises a second driving mechanism, and the second driving mechanism is arranged on the mounting frame; The second driving mechanism is connected with the restraint tray and is used for driving the restraint tray to move towards the first electric connecting piece and the second electric connecting piece through the second driving mechanism, so that the shell of the battery cell to be tested, the metal piece and the first electric connecting piece are contacted with the second electric connecting piece. Optionally, the electrical core insulation testing device further comprises a third driving mechanism, and the third driving mechanism is arranged on the mounting frame; The electric connector support is connected with the third driving mechanism and is used for driving the electric connector support to translate along the bearing plane of the restraint tray through the third driving mechanism so that the first electric connector is in contact with the outer shell of the battery cell to be tested at different positions. Optionally, the electrical core insulation testing device further comprises a jacking platform; The second driving mechanism is arranged on the mounting frame and is in driving connection with the restraint tray, and the second driving mechanism and