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CN-121983673-A - Solid electrolyte battery clamp, clamping tool with same and clamping method

CN121983673ACN 121983673 ACN121983673 ACN 121983673ACN-121983673-A

Abstract

The invention discloses a solid electrolyte battery clamp, a clamping tool with the same and a clamping method, and relates to the technical field of solid electrolyte batteries; the clamp comprises a clamp body and an elastic restoration part, wherein the clamp body is provided with a clamping surface for clamping a battery, the elastic restoration part is arranged at the clamping surface of the clamp body, the clamp body clamps the battery through the elastic restoration part, the clamp body is provided with a connecting hole around the elastic restoration part, and the connecting hole is used for connecting the two clamp bodies together. The elastic recovery part is arranged on the clamping surface of the clamp body, so that the deformation of the clamp body can be absorbed through the deformation of the elastic recovery part, and the pressure on the battery is ensured to be uniform.

Inventors

  • WANG WEIWEI
  • MA SITIAN
  • ZHANG YING
  • HU GUANG
  • KANG YAO

Assignees

  • 浙江绿色智行科创有限公司
  • 浙江吉利控股集团有限公司

Dates

Publication Date
20260505
Application Date
20260122

Claims (10)

  1. 1. A solid electrolyte battery clamp is characterized by comprising a clamp body (10) and an elastic recovery portion (20), wherein the clamp body (10) is provided with a clamping surface for clamping a battery, the elastic recovery portion (20) is arranged at the clamping surface of the clamp body (10), the clamp body (10) clamps the battery through the elastic recovery portion (20), a connecting hole (70) is formed in the clamp body (10) around the elastic recovery portion (20), and the connecting hole (70) is used for connecting the two clamp bodies (10) together.
  2. 2. The solid electrolyte battery clamp according to claim 1, wherein the elastic restoring portion (20) comprises a plurality of enclosing portions (21) and an embedding portion (22), wherein a through hole is formed in the middle of each enclosing portion (21), the sizes of the enclosing portions (21) are gradually reduced, the two enclosing portions (21) with adjacent sizes are smaller, the enclosing portion (21) with the smaller size is arranged in the through hole of the enclosing portion (21) with the larger size, the embedding portion (22) is arranged in the through hole of the enclosing portion (21) with the smallest size, the enclosing portion (21) and the embedding portion (22) can be elastically deformed and restored under the self rebound effect, and the hardness of each embedding portion (22) is larger than that of the enclosing portion (21), and the larger size of the enclosing portion (21) is smaller.
  3. 3. The solid electrolyte battery clamp according to claim 2, further comprising a clamping plate (30), wherein a clamping hole is formed in the middle of the clamping plate (30), the elastic restoring portion (20) is clamped in the clamping hole, and the elastic restoring portion (20) is connected with the clamp body (10) through the clamping plate (30).
  4. 4. The solid electrolyte battery clamp according to claim 1, further comprising a pressing plate (40), wherein the pressing plate (40) is for abutting against the elastic restoring portion (20), the clamp body (10) clamps a battery by the pressing plate (40), and the pressing plate (40) is movable toward a direction approaching or away from the clamp body (10).
  5. 5. The solid electrolyte battery clamp according to claim 4, wherein the clamp body (10) and the pressing plate (40) are provided with coaxial assembly holes (80), and the clamp body (10) and the pressing plate (40) are connected together through the assembly holes (80).
  6. 6. The solid electrolyte battery clamp according to claim 5, further comprising a connecting post penetrating through fitting holes (80) of the clamp body (10) and the pressing plate (40), the connecting post holding the clamp body (10) and the pressing plate (40) relatively fixed in a radial direction, the pressing plate (40) being movable relative to the clamp body (10) in an axial direction of the connecting post, and opposite ends of the connecting post having stopper portions that stopper the clamp body (10) and the pressing plate (40) in the axial direction of the connecting post.
  7. 7. A solid electrolyte battery clamping tool, comprising a bolt (50), a nut (60) and two solid electrolyte battery clamps according to any one of claims 1 to 6, wherein the two clamp bodies (10) clamp a battery through the elastic restoring part (20), and the bolt (50) is inserted into the connecting holes (70) of the two clamp bodies (10) and locked through the nut (60) so as to fix the two clamp bodies (10) together.
  8. 8. The solid electrolyte battery clamping tool according to claim 7, further comprising a pressing member for pressing one of the jig bodies (10) in a direction approaching the other jig body (10), the pressing member having a pressing surface, the jig body (10) having a pressing surface opposite to the clamping surface, the pressing member pressing the pressing surface of the jig body (10) through the pressing surface, an area of the pressing surface being smaller than an area of the pressing surface and not smaller than a cross-sectional area of the elastic restoring portion (20).
  9. 9. A solid electrolyte battery clamping method applied to the solid electrolyte battery clamping tool as claimed in claim 8, comprising the following steps: Clamping a battery between the elastic restoration parts (20) at the clamping surfaces of the two clamp bodies (10), penetrating the bolts (50) into the connecting holes (70) of the clamp bodies (10), and pre-tightening nuts (60) on the bolts (50); after the pressing piece applies pressure to one of the clamp bodies (10), the nut (60) is screwed on the bolt (50) with a certain locking torque force; And the pressing piece is used for removing the pressure applied by the pressing piece to the clamp body (10), and the clamp body (10) provides pressure for a battery through the pretensioning of the nut (60).
  10. 10. The solid electrolyte battery clamping method according to claim 9, wherein: when the battery is clamped between the two clamp bodies (10), a pressure sensor is arranged between the elastic restoring part (20) and the battery; The pressing piece applies pressure to one of the clamp bodies (10) according to target pressure, and then locks the nut (60) with a certain locking torque force; After the pressure applied by the pressing piece to the clamp body (10) is withdrawn, reading the display value of the pressure sensor, if the display value of the pressure sensor is different from the target pressure value, continuously applying pressure to the clamp body (10) by the pressing piece according to the target pressure, tightening the nut (60) by using the locking torque of another value, withdrawing the pressure applied by the pressing piece to the clamp body (10) after tightening, reading the display value of the pressure sensor until the display value of the pressure sensor is the target pressure value after withdrawing the pressure of the pressing piece, and recording the locking torque at the moment; and establishing a corresponding relation between the locking torsion value and the target pressure value under the pressure of the target pressure.

Description

Solid electrolyte battery clamp, clamping tool with same and clamping method Technical Field The invention relates to the technical field of solid electrolyte batteries, in particular to a solid electrolyte battery clamp, a clamping tool with the same and a clamping method. Background All-solid-state batteries adopt a route in which solid-state electrolyte replaces electrolyte and a diaphragm of a liquid battery to carry out lithium ion transmission and electronic insulation, and the greatest problem of the route is that the ion conductivity of the solid-state electrolyte and the interface contact between the solid-state electrolyte and the anode and the cathode are adopted. The solid electrolyte is contacted with the anode and the cathode in a solid-solid contact way, so that the problems of poor contact effect and high interface impedance exist, and a clamp is required to continuously apply high pressure (more than 60T) in the charge and discharge process so as to ensure that the battery is contacted well. The current clamping mode is to clamp an all-solid-state battery between two clamping plates, the two clamping plates are connected together by bolts and nuts, and the nuts are screwed down by a certain locking torque force, so that pressure is provided for the battery. However, under high pressure, excessive tightening of the nut can cause bending deformation of the clamping plate, further cause structural problems of partial overpressure caused by uneven surface stress of the battery, and the solid-state battery is extremely easy to short. Disclosure of Invention In view of the above, the present invention provides a solid electrolyte battery clamp, a clamping tool and a clamping method thereof, so as to solve the above technical problems. The invention provides a solid electrolyte battery clamp which comprises a clamp body and an elastic restoration part, wherein the clamp body is provided with a clamping surface for clamping a battery, the elastic restoration part is arranged at the clamping surface of the clamp body, the clamp body clamps the battery through the elastic restoration part, the clamp body is provided with a connecting hole around the elastic restoration part, and the connecting hole is used for connecting the two clamp bodies together. Optionally, the elastic restoring portion includes a plurality of enclosing portions and an engagement portion, the middle of the enclosing portion is provided with a through hole, the sizes of the plurality of enclosing portions gradually decrease, and among two enclosing portions with adjacent sizes, the enclosing portion with smaller size is arranged in the through hole of the enclosing portion with larger size, the scarf joint portion is arranged in the perforation of the enclosing portion with the minimum size, the enclosing portion and the scarf joint portion can be elastically deformed and restored under the self rebound effect, the hardness of the scarf joint portion is larger than that of the enclosing portion, and the larger the size of the enclosing portion is, the smaller the hardness of the enclosing portion is. Optionally, the clamping device further comprises a clamping plate, a clamping hole is formed in the middle of the clamping plate, the elastic restoring portion is clamped in the clamping hole, and the elastic restoring portion is connected with the clamp body through the clamping plate. Optionally, the clamp further comprises a pressing plate, wherein the pressing plate is used for propping against the elastic restoring part, the clamp body clamps the battery through the pressing plate, and the pressing plate can move towards a direction approaching to or away from the clamp body. Optionally, the clamp body and the pressing plate are provided with coaxial assembly holes, and the clamp body and the pressing plate are connected together through the assembly holes. Optionally, the device further comprises a connecting column, wherein the connecting column penetrates through the assembly holes of the clamp body and the pressing plate, the connecting column is used for keeping the clamp body and the pressing plate relatively fixed in the radial direction, the pressing plate can move relative to the clamp body in the axial direction of the connecting column, and the two opposite ends of the connecting column are provided with limiting parts for limiting the clamp body and the pressing plate in the axial direction of the connecting column. The invention also provides a solid electrolyte battery clamping tool which comprises a bolt, a nut and two solid electrolyte battery clamps, wherein the two clamp bodies clamp a battery through the elastic recovery part, and the bolt is penetrated in the connecting hole of the clamp body and is locked through the nut. The clamp comprises a clamp body, clamping faces, pressing pieces and an elastic restoration part, wherein the clamping faces are arranged on the clamp body, the pressing pieces are used