Power battery OCV test assembly

Abstract

The utility model belongs to the technical field of power battery open circuit voltage test, and especially relates to a power battery OCV test assembly comprising an installation pressing plate and a plurality of probe seats, one side of the installation pressing plate close to the probe seats is provided with a support step in an inward extending manner, and the support step is provided with a plurality of probe seats. The support step is provided with a plurality of clamping grooves corresponding to the probe seats along the length direction, the side parts of the probe seats extend outwards to form bosses, the bosses are provided with clamping blocks matched with the clamping grooves, and the probe seats are separably fixed on the mounting pressing plate through the clamping blocks. The plurality of probe seats are clamped and matched with the clamping grooves through the clamping blocks and are separably fixed on the mounting pressing plate, and screw connection is replaced by clamping connection, so that on one hand, the probe seats are prevented from being damaged in a screw loosening and tightening process, and on the other hand, the height error between the adjacent probe seats is reduced, thereby improving the disassembly and assembly efficiency of the probe seats, and improving the assembly and disassembly efficiency of the probe seats. The method is especially suitable for a large-scale test scene.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of power battery open circuit voltage test, especially relates to power battery OCV test subassembly. BACKGROUND

[0002] OCV test (open circuit voltage test) is used for evaluating the health state, capacity and whether there is internal short circuit of battery and the like. In the prior art, the probe base is detachably fixed on the mounting pressure plate through screws, and this mounting mode has the following disadvantages: the probe base is easily damaged when the screw is loosened or tightened, and the mounting efficiency is low. UTILITY MODEL CONTENTS

[0003] The utility model discloses a power battery OCV test subassembly, which aims to solve the technical problem of low mounting efficiency in the prior art.

[0004] To achieve the above object, the power battery OCV test subassembly provided by the utility model embodiment comprises a mounting pressure plate and a plurality of probe bases, the mounting pressure plate is provided with a support step inwardly on one side close to the probe base, the support step is provided with a clamping groove corresponding to the plurality of probe bases along the length direction, the side part of the probe base is provided outwardly with a boss, the boss is provided with a clamping block matched with the clamping groove, and the probe base is detachably fixed on the mounting pressure plate through the clamping block.

[0005] Optionally, the mounting pressure plate is provided in a pair, the two sides of the probe base are respectively provided with the boss, and the pair of mounting pressure plates provide vertical upward supporting force for the probe base.

[0006] Optionally, the plurality of clamping grooves are arranged on the support step in a linear equidistant manner.

[0007] Optionally, the probe base is provided with a test probe, and the test probe is used for detecting the current of the power battery.

[0008] Optionally, the test probe comprises a pair of semicircular probes, the semicircular probes are connected with the probe base through two needle rods, the needle rods are coaxially provided with springs, the top end of the spring abuts against the probe base, and the top end abuts against the semicircular probe.

[0009] Optionally, the utility model further comprises an insulating sheath, the insulating sheath is provided with a through hole corresponding to the needle rod one by one, and the insulating sheath is provided on the end of the needle rod close to the semicircular probe.

[0010] Optionally, the utility model further comprises a sampling needle arranged on the probe base, and the sampling needle is used for detecting the voltage of the power battery.

[0011] Optionally, the mounting pressure plate is provided with an assembly hole.

[0012] The power battery OCV test assembly provided by the embodiment of the utility model has at least one of the following technical effects: the plurality of probe bases are fixed on the mounting pressing plate through the clamping block and the clamping groove in a detachable manner, the screw connection is replaced by the clamping connection, on the one hand, the probe base is prevented from being damaged in the process of loosening and tightening the screw, on the other hand, the height error between the adjacent probe bases is reduced, thereby the dismounting efficiency of the probe base is improved, and the utility model is especially suitable for large-scale test scenes; the support step extending inwardly provides support force for the plurality of probe bases in the vertical direction, and the stability of the utility model in the lifting process is improved. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description, obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0014] Fig. 1 The structure diagram of the power battery OCV test assembly provided by the embodiment of the utility model.

[0015] Fig. 2 The component exploded view of the power battery OCV test assembly provided by the embodiment of the utility model.

[0016] Fig. 3 The schematic diagram of the use state of the power battery OCV test assembly provided by the embodiment of the utility model.

[0017] In the drawings, various reference signs represent:

[0018] 1 - mounting pressing plate, 11 - support step, 12 - clamping groove;

[0019] 2 - probe base, 21 - boss, 22 - clamping block, 23 - test probe, 231 - semicircular probe head, 232 - insulating sheath, 24 - sampling needle;

[0020] 3 - module rack;

[0021] 4 - battery pole. DETAILED DESCRIPTION

[0022] The embodiments of the utility model will be described in detail below, and the examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the embodiments of the utility model, and cannot be understood as limiting the utility model.

[0023] In the description of the embodiments of the present application, it should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0024] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the embodiments of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0025] In the embodiments of the present application, unless otherwise specifically defined and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0026] In one embodiment of the present application, as Figs. 1-3As shown, the power battery OCV test assembly is provided with a mounting pressing plate 1 and a plurality of probe bases 2, the mounting pressing plate 1 is provided with a support step 11 inwardly on one side close to the probe bases 2, the support step 11 is provided with a plurality of clamping grooves 12 corresponding to the plurality of probe bases 2 along the length direction, the side of the probe base 2 is provided outwardly with a boss 21, the boss 21 is provided with a clamping block 22 matched with the clamping groove 12, and the probe base 2 is detachably fixed to the mounting pressing plate 1 through the clamping block 22. Specifically, the test device comprises a conveying mechanism for conveying the power battery along the arrangement direction of the plurality of probe bases 2, two module racks 3 provided on the conveying mechanism, the two module racks 3 are connected with the mounting pressing plates 1 of the two power battery OCV test assemblies respectively and can drive the probe bases 2 to move relative to the battery pole 4, wherein when the module rack 3 drives the battery OCV test assembly to press down to one end close to the power battery in the vertical direction, the probes of one group of power battery OCV test assemblies are pressed against the positive pole of the power battery, and the probes of the other group of power battery OCV test assemblies are pressed against the negative pole of the power battery, so that the purpose of power battery OCV test is achieved.

[0027] In an embodiment of the present application, as shown in Figs. 1-2 The mounting pressing plate 1 is provided with a pair of bosses 21 on both sides of the probe base 2, and the pair of mounting pressing plates 1 provide vertical upward support force for the probe bases 2. Specifically, the pair of support steps 11 are respectively provided with first guide surfaces arranged upwardly inclined, and the pair of bosses 21 are respectively provided with second guide surfaces arranged upwardly inclined, and the opposite first guide surfaces are arranged in mirror image. When assembling, the pair of mounting pressing plates 1 provide support force for the plurality of probe bases 2 from bottom to top and press tightly to one end close to the module rack 3. During the pressing process, the first guide surface and the second guide surface are used for sliding cooperation, so that the bottom of the boss 21 on the plurality of probe bases 2 can be in contact with the bottom of the support step 11, and the height error between the adjacent probe bases 2 is further reduced. The two bosses 21 are respectively connected with the clamping grooves 12 on the corresponding side through the clamping blocks 22, so as to improve the uniformity of the stress on both sides of the probe base 2.

[0028] In an embodiment of the present application, as shown in Fig. 2 The plurality of clamping grooves 12 are arranged on the support step 11 in a straight line and equidistant manner.

[0029] In an embodiment of the present application, as shown in Figs. 1-2 The probe base 2 is provided with a test probe 23, and the test probe 23 is used for detecting the current of the power battery.

[0030] In an embodiment of the present application, as shown in Figs. 1-2As shown, the test probe 23 comprises a pair of semicircular probes 231, the semicircular probes 231 are connected with the probe base 2 through two needle rods, the needle rods are coaxially sleeved with springs, the top end of the spring abuts against the probe base 2 and the top end abuts against the semicircular probe 231.

[0031] In an embodiment of the present application, as shown in Figs. 1-2 As shown, it further comprises an insulating sheath 232, the insulating sheath 232 is provided with a through hole corresponding to the needle rod one by one and is sleeved on the end of the needle rod close to the semicircular probe 231. The insulating sheath 232 is used to keep the four needle rods balanced during the pressing process, the gap between the inner wall of the through hole and the outer wall of the needle rod can keep a certain angle of deflection, improve the smoothness of pressing, and prevent the short circuit caused by the inclination of the needle rod during the pressing process.

[0032] In an embodiment of the present application, as shown in Fig. 3 As shown, it further comprises a sampling needle 24 arranged on the probe base 2, the sampling needle 24 is used to detect the voltage of the power battery. Specifically, the two semicircular probes 231 in one test assembly and the probe of the sampling needle 24 are pressed against the positive pole of the power battery, the two semicircular probes 231 in another test assembly and the probe of the sampling needle 24 are pressed against the negative pole of the power battery, by increasing the sampling needle 24, the voltage performance of the battery under different states can be directly understood.

[0033] In an embodiment of the present application, the mounting pressing plate 1 is provided with an assembly hole (not shown in the figure). Specifically, the mounting pressing plate 1 is fixedly connected with the module rack 3 of the test device through screws, and the assembly hole is used for the screws to pass through.

[0034] The above only describes the preferred embodiments of the present application and is not used to limit the present application, any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A power cell OCV test assembly, characterized by: The mounting press plate is provided with a support step inwardly extended on one side close to the probe seats, and the support step is provided with clamping grooves corresponding to the probe seats along the length direction.

2. The power battery OCV test assembly according to claim 1, wherein: The mounting press plate is provided with a support step inwardly extended on one side close to the probe seats, and the support step is provided with clamping grooves corresponding to the probe seats along the length direction.

3. The power cell OCV test assembly of claim 1, wherein: The mounting press plate is provided with a support step inwardly extended on one side close to the probe seats, and the support step is provided with clamping grooves corresponding to the probe seats along the length direction.

4. The power cell OCV test assembly of claim 1, wherein: The probe seat is provided with a test probe for detecting the current of the power battery.

5. The power cell OCV test assembly of claim 4, wherein: The test probe comprises a pair of semicircular probes connected to the probe seat through two needle rods, and the needle rods are coaxially provided with springs.

6. The power cell OCV test assembly of claim 5, wherein: The mounting press plate is provided with a support step inwardly extended on one side close to the probe seats, and the support step is provided with clamping grooves corresponding to the probe seats along the length direction.

7. The power cell OCV test assembly of claim 4, wherein: The mounting press plate is provided with a support step inwardly extended on one side close to the probe seats, and the support step is provided with clamping grooves corresponding to the probe seats along the length direction.

8. The power cell OCV test assembly of claim 1, wherein: ​

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