Voltage and internal resistance detection tool and device for battery cell
By designing a voltage internal resistance detection tooling and device for battery cells, using elastic resistance and spring to control pressure, the problem of difficulty in controlling the pressure of the pen tip when manually detecting the internal resistance of the battery cells in the prior art is solved, and the protection of the battery cells is achieved Effect.
Patent Information
- Application Number
- CN202420936759.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-30
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2034-04-30
AI Technical Summary
In the prior art, when manually using a voltage internal resistance detection pen to detect the internal resistance of the battery cell, it is difficult to control the pressure of the detection pen tip and the positive and negative electrodes of the battery cell, which easily leads to damage to the positive and negative electrodes of the battery cell.
Design a voltage internal resistance detection tool and device for battery cells. By floating the internal resistance detection pen on the first tool plate and the second tool plate, the detection pen and the positive and negative poles of the battery cells are elastically inconsistent, and the detection pen is controlled by spring control. The pressure of the pen to the positive and negative electrodes of the battery cell.
It realizes that under manual operation, the pressure of the internal resistance detection pen tip on the positive and negative electrodes of the battery cell is reduced, and the positive and negative electrodes of the battery cell are protected from damage, while also convenient for operation.
Smart Images
Figure CN222506391U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of battery core internal resistance detection, and in particular relates to a battery core voltage internal resistance detection tool and device. Background Art
[0002] The voltage internal resistance sorting test of the battery cell is the first incoming material inspection link. In the past, it was inconvenient to use both hands to hold the voltage internal resistance test pen for testing. Therefore, in order to avoid many uncontrollable factors, it is difficult to control the downward pressure of the internal resistance test pen tip on the positive and negative electrodes of the battery cell when the voltage internal resistance test pen tip contacts the positive and negative electrodes of the battery cell, which is very easy to cause damage to the positive and negative surfaces of the battery cell.
[0003] Therefore, there is an urgent need for a battery cell voltage internal resistance detection tool and device that can assist manual use of a voltage internal resistance detection pen to detect the internal resistance of a battery cell, and can control the contact pressure between the voltage internal resistance detection pen and the positive and negative poles of the battery cell. Utility Model Content
[0004] The purpose of the utility model is to overcome the deficiencies in the prior art and to provide a voltage internal resistance detection tool and device for a battery cell. By floatingly mounting an internal resistance detection pen on a first tooling plate and a second tooling plate that can be docked, the internal resistance detection pen can elastically contact the positive and negative electrodes of the battery cell, thereby controlling the pressure of the internal resistance detection pen on the positive and negative electrodes of the battery cell and preventing damage to the positive and negative electrodes of the battery cell.
[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a voltage internal resistance detection tool for a battery cell, comprising a fixing kit that can be clamped and fixed on the outer periphery of the internal resistance detection pen, and a group of first tooling plates and second tooling plates that can be clamped together; wherein, a mounting base is provided on the first tooling plate, a first bolt that can be screwed to the mounting base is movably penetrated through the fixing kit, and the first bolt is sleeved with a spring whose two ends are respectively elastically abutted against the mounting base and the fixing kit; and a contoured limit plate for clamping the battery cell is provided on the second tooling plate.
[0006] Optionally, the fixing kit includes a concave block and a convex block that can be docked; the concave block and the convex block are both provided with a contoured portion on one side that abuts against the internal resistance detection pen, and the concave block and the convex block can be connected by a second bolt.
[0007] Optionally, the mounting base includes a base plate connected to the first tooling plate, and a plurality of U-shaped blocks arranged on the base plate and corresponding to the concave blocks respectively; the first bolt is movably passed through the concave block and threadedly connected to the U-shaped block, and the number of first bolts arranged between the corresponding U-shaped blocks and the concave blocks is at least two, and the first bolts are symmetrically distributed along the internal resistance detection pen.
[0008] Optionally, the base plate is provided with a plurality of groups of positioning holes arranged in a linear array, and the U-shaped block is provided with a round hole, and the U-shaped block is provided with a third bolt which can be threadedly connected to the positioning hole through the round hole.
[0009] Optionally, rounded corners are provided on both sides of one end of the first tooling plate that is clamped with the second tooling plate.
[0010] Optionally, a plurality of symmetrically distributed bull's eye wheels are provided on the bottom side of the second tooling plate.
[0011] Optionally, a handle for holding is provided on the second tooling plate.
[0012] A voltage internal resistance detection device for a battery cell, comprising the aforementioned battery cell voltage internal resistance detection tooling and a mounting seat, wherein the first tooling plate is arranged on the mounting seat, and the mounting seat is provided with a plurality of groups of slide grooves corresponding to the bull's eye wheel, the slide grooves are linear, and the bull's eye wheel is slidably embedded in the slide grooves;
[0013] The second tooling plate can move along the slide groove to dock with the first tooling plate.
[0014] Compared with the prior art, the beneficial effects achieved by the utility model are as follows: the battery cell is placed on the contoured limit plate, and the internal resistance detection pen is floatingly mounted on the first tooling plate through a fixing kit and a mounting base; when the first tooling plate is docked with the second tooling plate, the tip of the internal resistance detection pen can elastically contact the positive and negative poles of the battery cell, which is convenient for manual operation and can also reduce the pressure of the internal resistance detection pen tip on the positive and negative poles of the battery cell, thereby protecting the positive and negative poles of the battery cell from damage. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] The utility model is further described below in conjunction with the accompanying drawings and embodiments.
[0016] Figure 1 It is a schematic diagram of the oblique structure of the voltage internal resistance detection tool in the preferred embodiment of the utility model;
[0017] Figure 2 It is a schematic diagram of the top view of the voltage internal resistance detection tooling in the preferred embodiment of the utility model;
[0018] Figure 3 It is a side view structural schematic diagram of the voltage internal resistance detection tooling in the preferred embodiment of the utility model;
[0019] Figure 4 It is a structural schematic diagram of a preferred embodiment of the utility model when a battery cell is placed on a voltage internal resistance detection tool;
[0020] Figure 5It is a structural schematic diagram of the first tooling plate, the mounting base, and the fixing kit in the preferred embodiment of the utility model;
[0021] Figure 6 It is a structural schematic diagram of the voltage internal resistance detection tool installed on the mounting base in the preferred embodiment of the utility model;
[0022] Among them, 1. fixing kit; 101. concave block; 102. convex block; 2. first tooling plate; 3. second tooling plate; 4. mounting base; 401. base plate; 4011. positioning hole; 402. U-shaped block; 4021. circular hole; 5. first bolt; 6. spring; 7. contoured limit plate; 8. second bolt; 9. third bolt; 10. bull's eye wheel; 11. handle; 12. mounting seat; 1201. slide groove. DETAILED DESCRIPTION
[0023] The present invention will now be further described in detail in conjunction with the accompanying drawings and embodiments. These drawings are simplified schematic diagrams that only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.
[0024] It should be noted that if there are directional indications (such as up, down, bottom, top, etc.) involved in this embodiment, the directional indication is only used to explain the relative position relationship, movement, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly. The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. Unless otherwise clearly specified and defined, the terms "set", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances. Embodiment 1
[0025] like Figure 1-Figure 5 As shown, a voltage internal resistance detection tool for a battery cell includes a fixing kit 1 that can be clamped and fixed on the outer periphery of an internal resistance detection pen, and a set of a first tooling plate 2 and a second tooling plate 3 that can be clamped together;
[0026] Among them, a mounting base 4 is provided on the first tooling plate 2, a first bolt 5 which can be screwed with the mounting base 4 is movably penetrated on the fixing kit 1, and a spring 6 is sleeved on the first bolt 5, whose two ends elastically abut against the mounting base 4 and the fixing kit 1 respectively; a contoured limit plate 7 for clamping the battery cell is provided on the second tooling plate 3.
[0027] Specifically, the battery cell is placed on the contoured limit plate 7, and the internal resistance detection pen is connected to the first tooling board 2 through the fixing kit 1 and the mounting base 4. When the first tooling board 2 is docked with the second tooling board 3, the tip of the internal resistance detection pen can contact the positive and negative electrodes of the battery cell, which is convenient for operators to use. In this process, the pressure of the internal resistance detection pen tip on the positive and negative electrodes of the battery cell is provided by the spring 6 to prevent the internal resistance detection pen from causing damage to the positive and negative electrodes of the battery cell.
[0028] The above, such as Figure 4 As shown, the shape and structure of the contour limiting plate 7 can refer to the shape of the battery cell. Preferably, for square battery cells, a U-shaped structure is formed between the contour limiting plate 7 and the second tooling plate 3 to limit and locate the position of the battery cell.
[0029] The above, such as Figure 5 As shown, the fixing kit 1 includes a concave block 101 and a convex block 102 that can be docked; the concave block 101 and the convex block 102 are both provided with a profiling portion on one side that abuts against the internal resistance detection pen, so as to increase the contact area between the concave block 101, the convex block 102 and the internal resistance detection pen, prevent the internal resistance detection pen from slipping off the fixing kit 1, and also prevent the pressure of the concave block 101 and the convex block 102 on the internal resistance detection pen from being too concentrated, thereby causing damage to the internal resistance detection pen. The concave block 101 and the convex block 102 can be connected by a second bolt 8. When disassembling, the voltage internal resistance detection pen can be taken out by simply removing the convex block 102 through the second bolt 8, which is convenient for replacement and use.
[0030] The above, such as Figure 3 As shown, the mounting base 4 includes a base plate 401 connected to the first tooling plate 2, and a plurality of U-shaped blocks 402 arranged on the base plate 401 and corresponding to the concave blocks 101 respectively; the mounting base 4 adopts a split structure, which can reduce the manufacturing cost. The first bolt 5 is movably arranged on the concave block 101 and is threadedly connected to the U-shaped block 402. The number of the first bolts 5 arranged between the corresponding U-shaped block 402 and the concave block 101 is at least two, and the first bolts 5 are symmetrically distributed along the internal resistance detection pen, so that when the internal resistance detection pen elastically conflicts with the positive and negative electrodes of the battery cell, it is ensured that the internal resistance detection pen can slide along a fixed track to prevent jamming, so that the first bolt 5 slides more smoothly on the U-shaped block 402.
[0031] In this embodiment, if Figure 3As shown, the base plate 401 is provided with a plurality of groups of positioning holes 4011 arranged in a linear array, and the U-shaped block 402 is provided with a round hole 4021, and the U-shaped block 402 is penetrated by a third bolt 9 which can be threadedly connected with the positioning hole 4011 through the round hole 4021. The position of the voltage internal resistance detection pen can be adjusted horizontally according to the distance between the positive and negative electrodes of the battery cell, so as to adapt to the diversity of the battery cell with the variability of the tooling.
[0032] The above, such as Figure 2 As shown, rounded corners are provided at both sides of one end of the first tooling plate 2 that is clamped with the second tooling plate 3 , so as to facilitate docking between the first tooling plate 2 and the second tooling plate 3 .
[0033] Further, such as Figure 3 As shown, a plurality of symmetrically distributed bull's eye wheels 10 are provided on the bottom side of the second tooling plate 3 so that the second tooling plate 3 can slide on the working platform. At the same time, a handle 11 for holding is provided on the second tooling plate 3 to facilitate manual operation. Embodiment 2
[0034] like Figure 1-Figure 6 As shown, a voltage internal resistance detection device for a battery cell is implemented by the aforementioned voltage internal resistance detection tooling, including a voltage internal resistance detection tooling for a battery cell and a mounting seat 12, a first tooling plate 2 is arranged on the mounting seat 12, and a plurality of groups of slide grooves 1201 corresponding to the bull's eye wheel 10 are arranged on the mounting seat 12, the slide grooves 1201 are linear, and the bull's eye wheel 10 is slidably embedded in the slide grooves 1201; the second tooling plate 3 can be moved along the slide grooves 1201 to dock with the first tooling plate 2. When in use, it is only necessary to place the battery cell on the contoured limit plate 7 on the voltage internal resistance detection tooling, and then push the second tooling plate 3 along the slide grooves 1201 toward the first tooling plate 2 through the handle 11, without manually adjusting the docking angle between the first tooling plate 2 and the second tooling plate 3, and the operation is more convenient.
[0035] Working principle: When in use, the battery cell is placed on the contoured limit plate 7, and the internal resistance detection pen is floatingly installed on the first tooling plate 2 through the fixing kit 1 and the mounting base 4. When the first tooling plate 2 is docked with the second tooling plate 3, the tip of the internal resistance detection pen can elastically contact the positive and negative poles of the battery cell, which is convenient for manual operation and can also reduce the pressure of the internal resistance detection pen tip on the positive and negative poles of the battery cell, protecting the positive and negative poles of the battery cell from damage.
[0036] The above is based on the ideal embodiment of the utility model. Through the above description, relevant personnel can make various changes and modifications without deviating from the technical concept of the utility model. The technical scope of this utility model is not limited to the content in the specification, and the technical scope must be determined according to the scope of the claims.
Claims
1. A voltage internal resistance detection tool for a battery cell, characterized in that: It comprises a fixing kit (1) capable of being clamped and fixed on the outer periphery of an internal resistance detection pen, and a set of a first tooling plate (2) and a second tooling plate (3) capable of being clamped together; The first tooling plate (2) is provided with a mounting base (4), the fixing kit (1) is movably provided with a first bolt (5) capable of being screwed to the mounting base (4), and the first bolt (5) is sleeved with a spring (6) with two ends elastically abutting against the mounting base (4) and the fixing kit (1) respectively; The second tooling plate (3) is provided with a contoured limiting plate (7) for clamping the battery core.
2. The battery cell voltage internal resistance detection tool according to claim 1, characterized in that: The fixing kit (1) comprises a concave block (101) and a convex block (102) capable of docking; The concave block (101) and the convex block (102) are both provided with a profiling portion on one side thereof that abuts against the internal resistance detection pen, and the concave block (101) and the convex block (102) can be connected via a second bolt (8).
3. The battery cell voltage internal resistance detection tool according to claim 2, characterized in that: The mounting base (4) comprises a base plate (401) connected to the first tooling plate (2), and a plurality of U-shaped blocks (402) arranged on the base plate (401) and respectively corresponding to the concave blocks (101); The first bolts (5) are movably inserted into the concave block (101) and are threadedly connected to the U-shaped block (402); the number of first bolts (5) arranged between the U-shaped block (402) and the concave block (101) is at least two, and the first bolts (5) are symmetrically distributed along the internal resistance detection pen.
4. The battery cell voltage internal resistance detection tool according to claim 3, characterized in that: The base plate (401) is provided with a plurality of groups of positioning holes (4011) arranged in a linear array, and the U-shaped block (402) is provided with a round hole (4021), and the U-shaped block (402) is provided with a third bolt (9) threadably connected to the positioning hole (4011) through the round hole (4021).
5. The battery cell voltage internal resistance detection tool according to claim 1, characterized in that: Rounded corners are provided at both sides of one end of the first tooling plate (2) that is clamped with the second tooling plate (3).
6. The battery cell voltage internal resistance detection tool according to claim 1, characterized in that: A plurality of symmetrically distributed bull's eye wheels (10) are provided on the bottom side of the second tooling plate (3).
7. The battery cell voltage internal resistance detection tool according to claim 1, characterized in that: The second tooling plate (3) is provided with a handle (11) for holding.
8. A voltage internal resistance detection device for a battery cell, characterized in that: The invention comprises a battery cell voltage internal resistance detection tool and a mounting seat (12) as claimed in any one of claims 1 to 7, wherein the first tool plate (2) is arranged on the mounting seat (12), and the mounting seat (12) is provided with a plurality of groups of slide grooves (1201) corresponding to the bull's eye wheel (10), the slide grooves (1201) are linear, and the bull's eye wheel (10) is slidably embedded in the slide grooves (1201); The second tooling plate (3) can move along the slide groove (1201) to dock with the first tooling plate (2).