Battery voltage internal resistance test auxiliary clamp based on internal resistance instrument

Abstract

The utility model belongs to the field of battery testing, and particularly relates to a battery voltage internal resistance testing auxiliary clamp based on an internal resistance instrument, which comprises a first clamp, the first clamp comprises an upper clamping part and a lower clamping part positioned below the lower clamping part, and the first ends of the upper clamping part and the lower clamping part are connected to form an elastic connecting end; the second ends of the upper clamping part and the lower clamping part are contacted to form a clamping end; the upper clamping part is provided with a test gap. According to the utility model, the test gap indicates the clamping position of the test fixture of the internal resistance instrument, the test position can be standardized, and the uncertainty of artificial errors is eliminated, so that the standard, unity and scientificity of the test are achieved; the auxiliary clamp is small in size, light in weight and portable, can be directly clamped on a tab to be positioned through a test gap, and has good operability and practicability; the device is simple in structure, easy to manufacture, low in cost and convenient to popularize and use.

Description

TECHNICAL FIELD

[0001] The utility model belongs to battery test technical field, concretely relates to a battery voltage internal resistance test auxiliary fixture based on ohmmeter. BACKGROUND

[0002] In the soft package battery manufacturing process, in addition to process control, various test results also reflect the quality of the final battery. Among the many test results, the voltage and internal resistance test results of the final product battery are particularly important, which reflects whether the battery performance is consistent.

[0003] The current common battery internal resistance test is through an ohmmeter and its test fixture, the test fixture is clamped on the pole ear, and then the test result is obtained by reading the number on the meter. However, it is found that the test result is different when the test fixture is clamped at different positions of the pole ear, so it is particularly important to unify the test position. The test position of the test fixture is measured by the naked eye, and it is difficult to maintain a unified test position among different test personnel.

[0004] Therefore, it is necessary to provide an improved technical solution for the above-mentioned prior art. UTILITY MODEL CONTENT

[0005] The utility model aims at overcoming the deficiencies of the prior art and providing a battery voltage internal resistance test auxiliary fixture based on an ohmmeter, which can standardize the test position and obtain stable test data.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0007] A battery voltage internal resistance test auxiliary fixture based on an ohmmeter, comprising a first fixture, the first fixture comprises an upper clamp part and a lower clamp part below the lower clamp part, the first end of the upper clamp part and the lower clamp part is connected to form a flexible connecting end, and the second end of the upper clamp part and the lower clamp part is connected to form a clamping end; a test gap is formed on the upper clamp part.

[0008] Further, the test gap penetrates the lower clamp part downward.

[0009] Further, the length of the test gap is 0.5-1.5 cm, and the width is 0.4-2 cm.

[0010] Further, the opposite surface of the upper clamp part and / or the lower clamp part is provided with a convex, wave or rib for anti-skid at the position corresponding to the clamping end.

[0011] Further, the lower clamp part is provided with an inner stop block at the position close to the connecting end.

[0012] Further, one side of the lower clamping part is fixed with a side stop, and the upper clamping part is not in contact with the side stop or only the side surface of the upper clamping part is in contact with the inner side surface of the side stop.

[0013] Further, the battery voltage internal resistance test auxiliary fixture based on the internal resistance tester is made of insulating material; the length of the first clamp is 3-6 cm, and the width is 2-4 cm.

[0014] In one embodiment, the battery voltage internal resistance test auxiliary fixture based on the internal resistance tester further comprises a second clamp, and the first clamp and the second clamp are connected into an integral whole through a connecting rod; and the interval between the first clamp and the second clamp is arranged according to the interval between the two pole lugs of the soft package battery.

[0015] Further, a plurality of locking pieces are fixed on the connecting rod, two locking pieces form a limiting space, the first clamp and the second clamp are arranged on the connecting rod and positioned in the limiting space, and the first clamp and the second clamp are clamped and fixed by the locking pieces on both sides.

[0016] In another embodiment, a sleeve is arranged on the connecting rod, the first clamp and the second clamp are arranged on the connecting rod and the sleeve is arranged between the first clamp and the second clamp; one end of the connecting rod is fixed with a large head part abutting against the side surface of the second clamp, and the other end of the connecting rod is provided with a locking piece abutting against the side surface of the first clamp.

[0017] The utility model discloses the beneficial effect is:

[0018] The test gap of the utility model discloses the clamping position of the test fixture of internal resistance tester, can standardize test position, eliminate the uncertainty of artificial error, reach the standardization, unity, scientific nature of test, its body is small, and the weight is light, and can be carried, and the auxiliary fixture is clamped on the pole lug directly, and the positioning can be carried out through the test gap, and good operability and practicality are possessed, and its simple structure is easy to prepare, and the cost is low, and the use is convenient. BRIEF DESCRIPTION OF DRAWINGS

[0019] The drawings accompanying the specification provide further understanding of the utility model, and the schematic embodiment of the utility model and the explanation thereof are used to explain the utility model, and do not constitute improper limitation to the utility model. Among them:

[0020] Figure 1 It is the structure schematic view of the first clamp of one embodiment of the utility model.

[0021] Figure 2 It is the structure schematic view of the first clamp of another embodiment of the utility model.

[0022] Figure 3The structure schematic view of the first clamp of still another embodiment of the utility model.

[0023] Figure 4 The structure schematic view of the first clamp of still another embodiment of the utility model.

[0024] Figure 5 The assembly schematic view of the sleeve of the embodiment of the utility model.

[0025] Figure 6 The use state schematic view of the embodiment of the utility model applied to the long strip-shaped tab.

[0026] Figure 7 The use state schematic view of the embodiment of the utility model applied to the flat tab.

[0027] In the drawing: 1 - lower clamping part, 2 - inner stop block, 3 - upper clamping part, 4 - test gap, 5 - lifting part, 6 - perforation, 7 - side stop block, 8 - connecting rod, 9 - sleeve, 10 - locking piece, 11 - large head part, 100 - clamping end, 200 - connecting end, 300 - first clamp, 400 - second clamp, 500 - tab. DETAILED DESCRIPTION

[0028] The technical scheme in the embodiments of the utility model will be described clearly and completely below, obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art belong to the protection scope of the utility model.

[0029] In the description of the utility model, the orientation or position relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" and the like is the orientation or position relationship shown in the drawing, which is only for the convenience of describing the utility model and does not require the utility model to be constructed and operated in a particular orientation, therefore, it cannot be understood as the limitation of the utility model. The terms "connected", "connected" used in the utility model should be understood broadly, for example, it can be fixed connection, also can be detachable connection, can be directly connected, also can be indirectly connected through the intermediate part, for the person skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0030] The utility model will be described in detail below with reference to the drawings and in combination with the embodiments. It should be noted that the embodiments in the utility model and the features in the embodiments can be combined with each other without conflict.

[0031] As Figures 1 to 7As shown, a battery voltage and internal resistance test auxiliary fixture based on an internal resistance meter includes a first fixture 300, the first fixture 300 includes an upper clamping part 3 and a lower clamping part 1 located below the lower clamping part 1, the first ends of the upper clamping part 3 and the lower clamping part 1 are connected to form a connecting end 200 with elasticity, and the second ends of the upper clamping part 3 and the lower clamping part 1 are connected to form a clamping end 100; The upper clamping part 3 is provided with an upwardly curved part 5 corresponding to the position of the clamping end, so as to facilitate the entry of the tab 500 into the clamping end;

[0032] A test gap 4 is formed on the upper clamping part 3; The working principle of the battery voltage and internal resistance test auxiliary fixture based on the internal resistance meter is similar to that of a bookmark holder and a shirt holder, which utilizes the characteristics of the material itself to clamp the tab 500; The battery voltage and internal resistance test auxiliary fixture based on the internal resistance meter is an insulator material, such as a plastic material, wood, etc.

[0033] For the test gap 4, if the internal resistance meter is matched with a pen (internal resistance meter test pen), the test gap 4 only needs to be opened on the upper clamping part 3; If the internal resistance meter is matched with a test clamp, the test gap 4 needs to be opened on the upper clamping part 3 and the lower clamping part 1; The position of the test gap 4 should not be opened on the connecting end 200, and can be opened on the position slightly away from the connecting end 200 and the clamping end 100. For example, Figure 1 、 Figure 4 In the above, only the test gap 4 is opened on the upper clamping part 3, which is suitable for the internal resistance meter test pen; Figure 2 、 Figure 3 The test gap 4 is opened on the upper clamping part 3 and the lower clamping part 1, which is suitable for the internal resistance meter test clamp. For example, Figure 4 The first fixture 300 in the above is similar to the shirt holder in the prior art, and the clamping ends 100 of 2-3 shirt holders can be cut off after purchasing the shirt holders, and then the cut-off shirt holders are aligned and bonded with other shirt holders of the same shape and size, so as to obtain an internal resistance test auxiliary fixture which can be used for the internal resistance meter test pen.

[0034] In a preferred embodiment, the opposite surfaces of the upper clamping part 3 and / or the lower clamping part 1 are provided with protrusions, waves or ridges for anti-skid at positions corresponding to the clamping end 100, which can be the material of the first fixture 300 and integrally formed with the upper clamping part 3 and the lower clamping part 1, or can be processed by point gluing, patching or other ways after the integral forming of the upper clamping part 3 and the lower clamping part 1 is completed.

[0035] In a preferred embodiment, for example, Figure 1 、 Figure 2 、 Figure 5As shown, the lower clamp part 1 is provided with an inner stop block 2 near the connecting end 200, which serves as a limiting part for the tab 500; after the first clamp 300 is clamped to the long strip-shaped tab, the top end of the long strip-shaped tab lightly rests on the stop block; after the first clamp 300 is clamped to the flat tab, the side edge of the flat tab lightly rests on the inner stop block 2.

[0036] In a preferred embodiment, as shown in Figure 3 , Figure 5 , Figure 6 and Figure 7 , one side of the lower clamp part 1 is fixed with a side stop block 7, which serves as a limiting part for the tab 500; the upper clamp part 3 does not contact the side stop block 7, or only the side surface of the upper clamp part 3 contacts the inner side surface of the side stop block 7; after the first clamp 300 is clamped to the long strip-shaped tab, the side edge of the long strip-shaped tab lightly rests on the stop block; after the first clamp 300 is clamped to the flat tab, the top end of the flat tab lightly rests on the stop block.

[0037] The long strip-shaped and flat tab 500 of the soft package battery produced by the company; the size of the long strip-shaped tab is 45mm×30mm, 65mm×30mm, 90mm×30mm, 45mm×40.5mm; the size of the flat tab is 10mm×31mm, 15mm×36mm, 20mm×37mm, 45mm×45mm; the length of the first clamp 300 is 3cm-6cm, the width is 2cm-4cm, the length of the test gap 4 is 0.5cm-1.5cm, the width is 0.4cm-2cm, the width of the test gap 4 is not more than half of the width of the first clamp 300; the principle of the size of the first clamp 300 is that after the tab 500 is clamped on the connecting end 200 / inner stop block 2 / side stop block 7, it should not contact the outer skin of the soft package battery; since the first clamp 300 is lightly clamped on the tab 500, this principle is to prevent the outer skin of the soft package battery from knocking the first clamp 300.

[0038] Since the soft package battery has two tabs 500, for the long strip-shaped tab, in order to position the two tabs 500 at the same time, a second clamp 400 is added, and the first clamp 300 and the second clamp 400 are connected into a whole through a connecting rod 8, and the spacing between the first clamp 300 and the second clamp 400 corresponds to the spacing between the two long strip-shaped tabs; as shown in Figure 5 , Figure 6 In this embodiment, the first clamp 300 and the second clamp 400 both have an inner stop block 2, and the inner stop block 2 is provided with a perforation 6 for mounting the connecting rod 8; the second clamp 400 has the same or similar structure as the first clamp 300, and a side stop block 7 can also be provided on the side edge of the first clamp 300 or the second clamp 400 to limit the long strip-shaped tab from the side.

[0039] In one embodiment, the two ends of the connecting rod 8 are provided with external threaded segments, the through holes 6 of the inner blocks 2 of the first clamp 300 and the second clamp 400 are provided with internal threaded segments, and the two ends of the connecting rod 8 are screwed into the inner blocks 2 of the first clamp 300 and the second clamp 400 respectively.

[0040] In another embodiment, a plurality of locking members 10 are fixed on the connecting rod 8, two locking members 10 form a limiting space in each group, the first clamp 300 and the second clamp 400 are arranged on the connecting rod 8 and positioned in the limiting space, and are clamped and fixed by the locking members 10 on both sides of the first clamp 300 and the second clamp 400; the locking member 10 is a light rod or a screw rod, the locking member 10 matched with the light rod is a fastening clamp, and a tape can also be wound on the light rod for fixing; the locking member 10 matched with the screw rod includes a circlip, a fastening clamp, and a nut.

[0041] In another embodiment, as shown in Figure 6 , a sleeve 9 is sleeved on the connecting rod 8, the first clamp 300 and the second clamp 400 are arranged on the connecting rod 8 and the sleeve 9 is located between the first clamp 300 and the second clamp 400, and the sleeve 9 with different lengths can be replaced according to the distance between the two tabs 500; one end of the connecting rod 8 is fixed with a large head part 11 abutting against the side surface of the second clamp 400, and the other end of the connecting rod 8 is provided with a locking member 10 abutting against the side surface of the first clamp 300; the connecting rod 8 and the large head part 11 can adopt a long screw, and the locking member 10 adopts a nut; the sleeve 9 can be made by cutting a plastic pipe such as a straw or a pen core pipe.

[0042] The use method of the utility model is:

[0043] 1. Clamping the auxiliary clamp on the battery tab 500, so that one side of the tab 500 abuts against the connecting end 200 inside / inner block 2 / side block 7 of the auxiliary clamp;

[0044] 2. Clamping the test clamp on the inner resistance instrument on the tab 500 through the test gap 4 on the auxiliary clamp; if it is an inner resistance instrument test pen, the pen is pointed on the tab 500 of the test gap 4;

[0045] 3. The final voltage and internal resistance reading of the battery are obtained by the data displayed by the inner resistance instrument.

[0046] The shape of the tab 500 can be mainly divided into a strip shape and a flat type. For the strip-shaped tab, as shown in Figure 6 , two first clamps 300 or a first clamp 300+second clamp 400 connected as a whole can be used to clamp the strip-shaped tab; Figure 6In the figure, preferably, the first clamp 300 and the second clamp 400 are used as a whole, and at least one of the first clamp 300 and the second clamp 400 is provided with the inner stop block 2, and the right side of the second clamp 400 is provided with the side stop strip, so that the right side of the long strip-shaped tab on the right side in the figure is attached to the side stop strip, and meanwhile, the top ends of the two long strip-shaped tabs are respectively stopped on the inner stop block 2 of the first clamp 300 and the second clamp 400, so that the precise positioning of the test notch 4 is realized.

[0047] For the flat tab, as shown in the figure, the preferred first clamp 300 is taken as an example for description, and the first clamp 300 is provided with the inner stop block 2 and the side stop strip, so that the top end of the flat tab in the figure is stopped on the side stop strip, and the side of the flat tab is stopped on the inner stop block 2, so that the precise positioning of the test notch 4 is realized. Figure 7 Two first clamps 300 are used to clamp and position the test notch 4 of the two flat tabs of the same soft-pack battery, and the two first clamps 300 can be independent of each other or connected into a whole through other connecting measures.

[0048] The utility model can provide a position-unified test notch 4 for each size of tab 500, standardize the test position of the internal resistance meter, achieve the standardization and uniformity of the test, and has the advantages of simple structure, easy manufacturing and low cost.

[0049] The above description is only the preferred embodiment of the utility model, and does not limit the utility model, and any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model are within the protection scope of the utility model.

Claims

1. An auxiliary fixture for testing the internal resistance of battery voltage based on an internal resistance meter, characterized in that: The first clamp (300) includes an upper clamp (3) and a lower clamp (1) located below the lower clamp (1). The first ends of the upper clamp (3) and the lower clamp (1) are connected to form an elastic connecting end (200). The second ends of the upper clamp (3) and the lower clamp (1) contact each other to form a clamping end (100). A test notch (4) is provided on the upper clamp (3).

2. The auxiliary fixture for testing battery voltage internal resistance based on an internal resistance meter according to claim 1, characterized in that: The test notch (4) extends downward through the lower clamp (1).

3. The auxiliary fixture for testing battery voltage internal resistance based on an internal resistance meter according to claim 1, characterized in that: The length of the test notch (4) is 0.5 to 1.5 cm and the width is 0.4 to 2 cm.

4. The auxiliary fixture for testing battery voltage internal resistance based on an internal resistance meter according to claim 1, characterized in that: The upper clamping part (3) and / or the lower clamping part (1) are provided with protrusions, waves or ribs for anti-slip at the positions of the opposite clamping ends (100).

5. The auxiliary fixture for testing battery voltage internal resistance based on an internal resistance meter according to claim 1, characterized in that: A side stop block (7) is fixed on one side of the lower clamp (1), and the upper clamp (3) does not contact the side stop block (7), or the upper clamp (3) only contacts the inner side of the side stop block (7).

6. The auxiliary fixture for testing battery voltage internal resistance based on an internal resistance meter according to claim 1, characterized in that: An inner stop block (2) is provided on the lower clamp (1) near the connecting end (200).

7. The auxiliary fixture for testing battery voltage internal resistance based on an internal resistance meter according to claim 6, characterized in that: The battery voltage internal resistance test auxiliary fixture based on the internal resistance meter also includes a second fixture (400), and the first fixture (300) and the second fixture (400) are connected as a whole by a connecting rod (8).

8. The auxiliary fixture for testing battery voltage internal resistance based on an internal resistance meter according to claim 7, characterized in that: A number of locking parts (10) are fixed on the connecting rod (8). The locking parts (10) are in groups of two, and a limiting space is formed between the two locking parts (10) in each group. The first clamp (300) and the second clamp (400) are inserted on the connecting rod (8) and positioned in the limiting space, and are clamped and fixed by the locking parts (10) on both sides of the first clamp (300) and the second clamp (400).

9. The auxiliary fixture for testing battery voltage internal resistance based on an internal resistance meter according to claim 7, characterized in that: A sleeve (9) is fitted on the connecting rod (8), the first clamp (300) and the second clamp (400) are inserted on the connecting rod (8) and the sleeve (9) is located between the first clamp (300) and the second clamp (400); one end of the connecting rod (8) is fixed with a large head (11) abutting against the side of the second clamp (400), and the other end of the connecting rod (8) is fitted with a locking member (10) abutting against the side of the first clamp (300).

10. The auxiliary fixture for testing battery voltage internal resistance based on an internal resistance meter according to claim 1, characterized in that: The auxiliary fixture for testing the internal resistance of battery voltage based on the internal resistance meter is made of an insulating material; the length of the first fixture (300) is 3-6 cm and the width is 2-4 cm.

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