A novel expansion force tooling fixture structure with visually assessable balance
By introducing scale lines and spring structures into the expansion force clamp, combined with the design of the clamping blocks and slots, the problem that existing expansion force clamps cannot be directly visually inspected for balance is solved, thus achieving uniform force distribution and accurate measurement.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 江苏远航锦锂新能源科技有限公司
- Filing Date
- 2025-05-16
- Publication Date
- 2026-05-26
AI Technical Summary
Existing expansion force clamps cannot be visually inspected to determine whether they are in a balanced state, resulting in uneven force on the battery cells, which may lead to loosening.
The structure includes a base plate, guide post, top plate, first spring, pad, and scale line. The stress is visually reflected by the scale value of the descending pad, and the cooperation between the locking block and the locking slot ensures stability and uniformity.
It achieves uniformity and accuracy in stress distribution, improves the convenience and accuracy of expansion force measurement, and avoids the problem of uneven stress distribution on the battery cell.
Smart Images
Figure CN224286944U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of lithium battery testing equipment technology, specifically to a novel expansion force tooling fixture structure that allows for visual assessment of balance. Background Technology
[0002] Lithium-ion batteries are batteries that use lithium metal or lithium compounds as the positive electrode material. They are currently widely used as important energy storage devices in portable electronic devices (such as mobile phones and laptops), as well as electric vehicles and drones. Compared to traditional nickel-cadmium and nickel-metal hydride batteries, lithium-ion batteries have many advantages, such as higher energy density, longer lifespan, lower self-discharge rate, and smaller size and weight. Lithium-ion batteries also have lower internal resistance, allowing them to provide higher discharge current, giving them a significant advantage in high-performance devices and applications.
[0003] Lithium-ion batteries exhibit a periodic expansion effect during charge-discharge cycles. For lithium-ion batteries about to be installed in modules, measuring the changes in expansion force during these cycles is essential. Existing expansion force clamps use four guide posts for positioning, but it's impossible to visually assess their balance during use, which can easily lead to uneven stress on the cells and even loosening over time. Therefore, these problems urgently need to be addressed. Utility Model Content
[0004] The technical problem to be solved by this utility model is to provide a novel expansion force tooling fixture structure that can be visually balanced. Through the cooperation of the first spring, the pad block and the scale line, the uniformity of the force can be intuitively reflected by the scale value of the pad block falling. This process is convenient, quick and easy, and saves time and effort, thereby greatly improving the uniformity of the four corners.
[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: The present invention provides a novel expansion force tooling fixture structure with visually assessable balance. Its innovation lies in: including a base plate, guide pillars, a top plate, a first spring, pads, and scale lines; the top plate and the base plate are horizontally parallel and aligned vertically at intervals, and guide pillars are vertically symmetrically arranged at the four right angles between them; the lower end of each guide pillar is fixedly connected to the corresponding position on the upper surface of the base plate, and its upper end extends vertically upwards beyond the top plate. The upper surface of the guide post is vertically slidably connected to the top plate; a matching pad is also slidably sleeved on the guide post near the lower surface of the top plate, and a first spring is also slidably sleeved on the guide post relative to the pad and the bottom plate, and the spring force of the first spring ensures that the upper end surface of the pad is tightly abutted against the lower surface of the top plate; a scale line is also provided vertically on one side of the outer circumference of each guide post, and the descent scale value of the pad can be visually observed through the scale line as the pad descends with the force of the top plate.
[0006] Preferably, each of the pads is a ring-shaped structure that matches the guide post, and its cross-section is T-shaped; the upper end of each pad is a large-diameter end, and the end face of its large-diameter end is tightly fitted to the corresponding position of the lower surface of the top plate, and the inner diameter of its large-diameter end is consistent with the inner diameter of its small-diameter end.
[0007] Preferably, each of the first springs is coaxially spaced and sleeved on the corresponding guide post, and its lower end is fixedly connected to the corresponding position on the upper surface of the base plate, and its upper end is fixedly connected to the small-diameter end face of the corresponding pad, so that the pad is compressed by the pad descending as the top plate is subjected to force.
[0008] Preferably, the four first springs have the same specifications, and the spring force of each first spring must ensure that, when it is in its normal state, the large-diameter end face of each pad is in close contact with the corresponding position of the lower surface of the top plate.
[0009] Preferably, each scale line is set on the outer side of the outer circumference of the corresponding guide post, and is set in the upper half region of the corresponding guide post. The four scale lines are aligned, and the length of each scale line must be sufficient to visually measure the displacement of the corresponding pad under force.
[0010] Preferably, a sliding groove is vertically embedded through the upper surface of the top plate relative to each guide post position. Each sliding groove is coaxially arranged with the corresponding guide post and matches the corresponding guide post, so that the top plate descends along the guide post under force through the sliding groove.
[0011] Preferably, it also includes a locking block; a circular locking block is coaxially provided on the end face of the large diameter end of each pad block, the outer diameter of each locking block is smaller than the outer diameter of the large diameter end of the corresponding pad block, and its inner diameter is consistent with the inner diameter of the large diameter end of the corresponding pad block, and the two are integrally formed.
[0012] Preferably, the thickness of each of the card blocks is less than half the thickness of the top plate, and each card block is coaxially sleeved on the corresponding guide post together with the corresponding pad block; a circular card groove matching the card block is also vertically embedded on the lower surface of each of the top plates relative to the position of each card block. The diameter and depth of each card groove are consistent with the outer diameter and thickness of the corresponding card block, and each card groove is connected to the corresponding slide groove. Thus, the stability of the pad block and the top plate being tightly fitted is ensured through the card groove and the card block engaging.
[0013] The beneficial effects of this utility model are:
[0014] (1) This utility model, through the cooperation of the first spring, the pad and the scale line, can make the uniformity of the force condition intuitively reflected by the scale value of the pad falling. This process is convenient and quick, and saves time and effort, thereby greatly improving the uniformity of the four corners.
[0015] (2) This utility model adopts an integral molding design of the card block and the pad block. Through the cooperation of the card block and the card slot, it can not only ensure the stability of the upper plate for the pad block, but also ensure that the lower end face of the four pad blocks is in the same horizontal plane, thereby improving the accuracy of confirming the uniformity of the force by the descent scale value of the pad block. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 This is a schematic diagram of a novel expansion force tooling fixture structure that allows for visual measurement of balance according to this utility model.
[0018] Figure 2 for Figure 1 An enlarged schematic diagram of part A in the middle.
[0019] Among them, 1-base plate; 2-guide post; 3-top plate; 4-first spring; 5-scale line; 6-block; 7-pad; 8-slide groove. Detailed Implementation
[0020] The technical solution of this utility model will be clearly and completely described below through specific embodiments.
[0021] This utility model discloses a novel expansion force tooling fixture structure with visually assessable balance, comprising a base plate 1, guide pillars 2, a top plate 3, a first spring 4, a pad 7, and scale lines 5; the specific structure is as follows: Figure 1 , Figure 2As shown, the top plate 3 and the bottom plate 1 are horizontally parallel and aligned with each other at intervals. At the four right angles between them, guide posts 2 are vertically symmetrically arranged. The lower end of each guide post 2 is fixedly connected to the corresponding position on the upper surface of the bottom plate 1, and its upper end extends vertically upwards beyond the upper surface of the top plate 3, and slides vertically with the top plate 3. A matching pad 7 is coaxially sleeved and slidably mounted on each guide post 2 near the lower surface of the top plate 3. A first spring 4 is coaxially sleeved on the pad 7 relative to the bottom plate 1, and the spring force of the first spring 4 ensures that the upper surface of the pad 7 is tightly abutted against the lower surface of the top plate 3. A scale line 5 is vertically arranged on one side of the outer circumference of each guide post 2, and the descent value of the pad 7 can be visually observed through the scale line 5 as the pad 7 descends under the force of the top plate 3.
[0022] like Figure 1 , Figure 2 As shown, each pad 7 is a ring-shaped structure that matches the guide post 2, and its cross-section is T-shaped; the upper end of each pad 7 is the large diameter end, and the end face of its large diameter end is tightly fitted to the corresponding position of the lower surface of the top plate 3, and the inner diameter of its large diameter end is consistent with the inner diameter of its small diameter end.
[0023] like Figure 1 , Figure 2 As shown, each first spring 4 is coaxially spaced and sleeved on the corresponding guide post 2, and its lower end is fixedly connected to the corresponding position on the upper surface of the base plate 1, and its upper end is fixedly connected to the small diameter end face of the corresponding pad 7. Thus, the pad 7 is compressed by the corresponding first spring 4 as the top plate 3 is subjected to force and descends.
[0024] like Figure 1 , Figure 2 As shown, the specifications of the four first springs 4 are all the same, and the spring force of each first spring 4 must ensure that when it is in normal condition, the large diameter end face of each pad 7 is tightly abutted against the corresponding position of the lower surface of the top plate 3.
[0025] like Figure 1 , Figure 2 As shown, each scale line 5 is set on the outer side of the outer circumference of the corresponding guide post 2, and is set in the upper half area of the corresponding guide post 2. The four scale lines 5 are aligned, and the length of each scale line 5 must be sufficient to visually measure the displacement of the corresponding pad 7 under force.
[0026] like Figure 1 , Figure 2 As shown, a sliding groove 8 is vertically embedded and penetrated on the upper surface of the top plate 3 relative to each guide post 2. Each sliding groove 8 is coaxially arranged with the corresponding guide post 2 and is matched with the corresponding guide post 2, so that the top plate 3 is subjected to force and descends along the guide post 2 through the sliding groove 8.
[0027] like Figure 1 , Figure 2 As shown, a circular locking block 6 is coaxially provided on the large diameter end face of each pad 7. The outer diameter of each locking block 6 is smaller than the outer diameter of the large diameter end of the corresponding pad 7, and its inner diameter is consistent with the inner diameter of the large diameter end of the corresponding pad 7. The two are integrally formed.
[0028] like Figure 1 , Figure 2 As shown, the thickness of each locking block 6 is less than half the thickness of the top plate 3, and they are coaxially sleeved on the corresponding guide post 2 together with the corresponding pad block 7. A circular locking groove matching the locking block 6 is also vertically embedded on the lower surface of each top plate 3 relative to the position of each locking block 6. The diameter and opening depth of each locking groove are consistent with the outer diameter and thickness of the corresponding locking block 6, and they are connected to the corresponding sliding groove 8. Thus, the locking groove and the locking block 6 are engaged to ensure the stability of the pad block 7 and the top plate 3 in close contact.
[0029] The working principle of this utility model is as follows: During use, the top plate 3 descends along the guide post 2 due to the force applied. At this time, the four pads 7 descend synchronously with the top plate 3 and compress the corresponding first spring 4 respectively. During this process, the uniformity of the force can be directly visually measured by the cooperation between the lower end face of each pad 7 and the corresponding scale line 5, thereby ensuring balance.
[0030] The beneficial effects of this utility model are:
[0031] (1) By combining the first spring 4, the pad 7 and the scale line 5, the uniformity of the force can be intuitively reflected by the scale value of the drop of the pad 7. This process is convenient and quick, and saves time and effort, thereby greatly improving the uniformity of the four corners.
[0032] (2) This utility model adopts an integral molding design of the card block 6 and the pad block 7. Through the cooperation of the card block 6 and the card slot, it can not only ensure the stability of the upper plate 3 to the pad block 7, but also ensure that the lower end face of the four pad blocks 7 is in the same horizontal plane, thereby improving the accuracy of confirming the uniformity of the force by the descending scale value of the pad block 7.
[0033] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the concept and scope of the present utility model. Without departing from the design concept of the present utility model, all modifications and improvements made by those skilled in the art to the technical solutions of the present utility model should fall within the protection scope of the present utility model. The technical content for which protection is sought in the present utility model has been fully recorded in the technical requirements.
Claims
1. A new type of expansion force tooling fixture structure that is visually balanced, characterized by: The system includes a base plate, guide pillars, a top plate, a first spring, pads, and scale lines. The top plate and the base plate are horizontally aligned with each other at intervals, and guide pillars are vertically symmetrically arranged at the four right angles between them. The lower end of each guide pillar is fixedly connected to the upper surface of the base plate at a corresponding position, and its upper end extends vertically upward beyond the upper surface of the top plate and slides vertically with the top plate. A matching pad is slidably fitted on each guide pillar near the lower surface of the top plate, and a first spring is slidably fitted on the pad relative to the base plate, ensuring that the upper end of the pad is tightly abutted against the lower surface of the top plate by the spring force of the first spring. A scale line is also provided vertically on one side of the outer circumference of each guide pillar, and the descent value of the pad can be visually observed through the scale line as the pad descends with the force of the top plate.
2. A new type of expansion force fixture clamp structure that can be visually balanced according to claim 1, characterized in that: Each of the pads is a ring-shaped structure that matches the guide post, and its cross-section is T-shaped; the upper end of each pad is a large-diameter end, and the end face of its large-diameter end is tightly fitted to the corresponding position of the lower surface of the top plate, and the inner diameter of its large-diameter end is consistent with the inner diameter of its small-diameter end.
3. A new type of expansion force fixture clamp structure that can be visually balanced according to claim 2, characterized in that: Each of the first springs is coaxially spaced and sleeved on the corresponding guide post, and its lower end is fixedly connected to the corresponding position on the upper surface of the base plate, and its upper end is fixedly connected to the small diameter end face of the corresponding pad. Thus, the pad descends as the top plate is subjected to force, thereby compressing the corresponding first spring.
4. A new type of expansion force fixture clamp structure that can be visually balanced according to claim 3, characterized in that: All four first springs have the same specifications, and the spring force of each first spring must ensure that, when in normal condition, the large-diameter end face of each pad is in close contact with the corresponding position on the lower surface of the top plate.
5. A new type of expansion force fixture clamp structure that can be visually balanced according to claim 1, characterized in that: Each of the aforementioned scale lines is set on the outer side of the outer circumference of the corresponding guide post, and is set in the upper half region of the corresponding guide post. The four scale lines are aligned, and the length of each scale line must be sufficient to visually measure the displacement of the corresponding pad under force.
6. A new type of expansion force fixture clamp structure that can be visually balanced according to claim 2, characterized in that: A sliding groove is vertically embedded through the upper surface of the top plate relative to each guide post position. Each sliding groove is coaxially arranged with the corresponding guide post and matches the corresponding guide post, so that the top plate descends along the guide post through the sliding groove.
7. The novel expansion force tooling fixture structure with visually assessable balance according to claim 6, characterized in that: It also includes a locking block; a circular locking block is coaxially provided on the end face of the large diameter end of each of the pad blocks, the outer diameter of each locking block is smaller than the outer diameter of the large diameter end of the corresponding pad block, and its inner diameter is consistent with the inner diameter of the large diameter end of the corresponding pad block, and the two are integrally formed.
8. The novel expansion force tooling fixture structure with visually assessable balance according to claim 7, characterized in that: Each of the aforementioned card blocks has a thickness less than half the thickness of the top plate, and is coaxially sleeved on the corresponding guide post together with the corresponding pad block; a circular card groove matching the card block is also vertically embedded on the lower surface of each of the top plates relative to the position of each card block. The diameter and depth of each card groove are consistent with the outer diameter and thickness of the corresponding card block, and are respectively connected to the corresponding sliding groove. Thus, the stability of the pad block and the top plate being tightly fitted is ensured through the card groove and the card block engaging.