Battery charging mechanism

Abstract

The utility model provides a battery charging mechanism suitable for simultaneously pre-charging a plurality of batteries, comprising a jig (1) in which a plurality of battery jars (11) are arranged and can accommodate a plurality of batteries (5); a charging assembly (2) which is at least provided with a needle plate (23), and a plurality of needle-shaped charging terminals (21) are fixed on the needle plate (23); the air cylinder (3) is located above the charging assembly (2); and a bottom plate (4) which is provided with more than two positioning baffle plates (42, 44), and is characterized in that the jig (1) is positioned on the surface of the bottom plate (4) through the positioning baffle plates (42, 44), and the charging assembly (2) can move downwards relative to the jig (1) under the driving of the air cylinder (3), so that the battery (5) is charged through the charging terminal (21).

Description

Technical Field

[0001] The utility model relates to a battery charging mechanism, in particular to a battery charging mechanism suitable for charging a plurality of batteries simultaneously. Background Art

[0002] In the large-scale production process of batteries, it is often necessary to pre-charge multiple newly manufactured batteries at the same time and test the battery's charging and discharging performance and safety.

[0003] In the prior art, commonly used battery charging mechanisms are as follows Figure 8 As shown, a plurality of newly manufactured batteries (5) are placed in a jig (1), and the jig (1) is sent to the bottom of the charging assembly (2) by a sliding trolley (4'); then, the jig (1) and the trolley (4') are lifted as a whole by a lifting cylinder (not shown) so that the batteries (5) therein contact with the charging terminals (21) in the charging assembly (2); the jig (1) is clamped by a claw (3') rotatably connected to the charging assembly (2), and the lifting cylinder is retracted at the same time; then, the charging terminals (21) pre-charge the plurality of batteries (5), and at the same time, the trolley (4') moves to the previous process to prepare for the pre-charging of the next group of batteries. By using such a battery charging mechanism, a plurality of batteries (5) can be pre-charged at the same time, thereby improving the production efficiency of the battery.

[0004] However, since the position of the jig (1) placed on the trolley (4') is not fixed, and the heights of the multiple batteries (5) in the jig (1) are different from each other, the position of the battery (5) is offset or tilted to the left or right, and sometimes it is impossible to accurately position it. When the jig rises, if the battery is tilted or offset, the battery will become stuck, or the charging terminal will not be consistent with the center of the battery, resulting in poor contact, affecting the stability of charging. Utility Model Content

[0005] The utility model aims to provide a battery charging mechanism suitable for charging a plurality of batteries simultaneously.

[0006] The battery charging mechanism of the utility model is characterized in that it has:

[0007] A fixture (1) having a plurality of battery slots (11) therein, which can accommodate a plurality of batteries (5);

[0008] The charging assembly (2) comprises at least a needle plate (23), and a plurality of needle-shaped charging terminals (21) are fixed on the needle plate (23);

[0009] A cylinder (3) located above the charging assembly (2); and

[0010] The bottom plate (4) has two or more positioning baffles (42, 44).

[0011] It is characterized in that

[0012] The jig (1) is positioned on the surface of the base plate (4) through the positioning baffles (42, 44).

[0013] Driven by the air cylinder (3), the charging assembly (2) can move downward relative to the fixture (1), thereby charging the battery (5) through the charging terminal (21).

[0014] Preferably, the charging assembly (2) is provided with a guide plate (22) below the needle plate (23), and the lower end of the charging terminal (21) extends into a plurality of guide grooves (22a) provided on the guide plate (22).

[0015] Preferably, the guide groove (22a) has an upper notch (22c) and a guide slope (22b) that slopes downward from the notch (22c) and outward, and the size of the notch (22c) matches the size of the battery end face of the battery (5).

[0016] Preferably, the charging assembly (2) is provided with a connecting plate (24) above the needle plate (23), and the charging assembly (2) is connected to the cylinder (3) via the connecting plate (24).

[0017] Preferably, the base plate (4) is fixed on the workbench via a fixing bracket (43).

[0018] Preferably, two parallel positioning baffles (42) are arranged along the length direction of the bottom plate (4), and one positioning baffle (44) is arranged along the width direction of the bottom plate (4).

[0019] Preferably, the charging terminal (21) has a charging needle (21a) located at the top and a spring (21b) located above the charging needle (21a).

[0020] Preferably, the charging assembly (2) has a positioning pin (25) which can be engaged with a positioning hole (12) provided in the fixture (1).

[0021] Preferably, the battery charging mechanism is used for pre-charging the battery (5).

[0022] Preferably, the battery (5) is a square lithium battery.

[0023] Utility Model Effect

[0024] In the battery charging mechanism of the utility model, by positioning the jig equipped with the battery on the surface of the bottom plate, keeping the position relatively fixed with the charging assembly, and moving the charging assembly downward under the drive of the cylinder, it is possible to ensure that the center position of the battery and the charging terminal are consistent, which solves the problem of battery deviation. In addition, by setting a guide plate in the charging assembly, the positioning accuracy of the battery and the charging terminal can be further improved; by setting a spring in the charging terminal, the poor contact problem caused by the unevenness of the battery end surface can be eliminated, thereby ensuring full contact between the battery and the charging terminal, and achieving the effect of stably charging multiple batteries at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram showing the structure of the battery charging mechanism of the utility model, (A) a stereoscopic view; (B) a side view.

[0026] Figure 2 It is a schematic diagram showing the use state of the battery charging mechanism of the utility model, (A) initial state; (B) state in which a jig equipped with a battery is placed on the surface of a bottom plate; (C) state in which the charging mechanism descends to charge the battery.

[0027] Figure 3 It is a schematic diagram showing the structure of a bottom plate in the battery charging mechanism of the present invention.

[0028] Figure 4 It is a schematic diagram showing a state where a battery-equipped fixture of the present invention is placed on the surface of a base plate, (A) a stereoscopic view; (B) a top view.

[0029] Figure 5 It is a schematic diagram showing the structure of the guide plate in the battery charging mechanism of the utility model, (A) a stereoscopic view; (B) a top view, and (C) a side view.

[0030] Figure 6 It is a schematic diagram showing the state of contact between the charging terminal and the battery in the battery charging mechanism of the utility model, (A) a cross-sectional view; (B) a partial enlarged view.

[0031] Figure 7 It is a schematic diagram showing the structure of the charging terminal in the battery charging mechanism of the present invention.

[0032] Figure 8 It is a schematic diagram showing the structure of a battery charging mechanism in the prior art. DETAILED DESCRIPTION

[0033] The specific form of the battery charging mechanism of the present utility model is described below in conjunction with the accompanying drawings.

[0034] Figure 1It is a schematic diagram showing the structure of the battery charging mechanism of the utility model, (A) a stereoscopic view; (B) a side view.

[0035] like Figure 1 As shown, the battery charging mechanism of the utility model comprises: a jig (1) having a plurality of battery slots (11) for accommodating a plurality of batteries (5); a charging assembly (2) having at least a needle plate (23) on which a plurality of needle-shaped charging terminals (21) are fixed; a cylinder (3) located above the charging assembly (2); and a base plate (4) having at least two positioning baffles (42, 44), characterized in that the jig (1) is positioned on the surface of the base plate (4) by the positioning baffles (42, 44); and under the drive of the cylinder (3), the charging assembly (2) can move downward relative to the jig (1), thereby charging the battery (5) through the charging terminals (21).

[0036] In the battery charging mechanism of the utility model, the jig with the battery is positioned on the surface of the bottom plate through the positioning baffle, so that the position of the jig and the charging assembly can be kept relatively fixed. In addition, by moving the charging assembly downward under the drive of the cylinder, the shaking of the battery can be avoided, ensuring that the center position of the battery and the charging terminal is basically consistent, which well solves the problem of battery deviation.

[0037] When designing the overall structure, the bottom plate where the battery is located is taken as a reference, and a centrally symmetrical structural design is adopted, so as to ensure that the charging needle is aligned with the center of the battery during charging, and the charging needle is in full contact with the end face of the battery, thereby achieving a stable charging effect.

[0038] In addition, if Figure 1 As shown in (B), the charging assembly (2) may be provided with a connecting plate (24) above the needle plate (23), and the charging assembly (2) is connected to the cylinder (3) via the connecting plate (24).

[0039] Around the charging assembly (2), the needle plate (23) and the connecting plate (24) are connected via positioning pins (25), and the positioning pins (25) can stabilize the overall structure of the charging assembly (2).

[0040] When the cylinder (3) is started, the entire charging assembly (2) together with the needle plate (23) is driven to move downward a specified distance, so that the charging terminal (21) is fully in contact with the end face of the battery (5) in the fixture (1) located below, and charging and discharging are performed.

[0041] Figure 2It is a schematic diagram showing the use state of the battery charging mechanism of the utility model, (A) initial state; (B) state in which a jig equipped with a battery is placed on the surface of a bottom plate; (C) state in which the charging mechanism descends to charge the battery.

[0042] like Figure 2 As shown, the charging assembly (2) is preferably further provided with a guide plate (22) below the needle plate (23), and the lower ends of a plurality of charging terminals (21) fixed on the needle plate (23) extend into a plurality of guide grooves (22a) provided on the guide plate (22).

[0043] In this way, Figure 2 As shown in (C), when the cylinder (3) is used to press down the charging assembly (2) as a whole and drive the needle plate (23) to descend, the battery (5) that may have been deviated can be corrected through the guide groove (22a), and the battery end face of the battery (5) can be positioned in the guide groove (22a), so that the center position of the battery (5) and the charging terminal (21) can be ensured to be consistent, thereby improving the positioning accuracy and better solving the problem of left-right deviation of the battery.

[0044] In addition, if Figure 2 As shown, the charging assembly (2) may also be provided with positioning pins (25) on the four sides of the guide plate (22) located at the bottom, and the positioning pins (25) may be engaged with the positioning holes (12) located on the four sides of the fixture (1) to improve the positioning accuracy.

[0045] Figure 3 It is a schematic diagram showing the structure of a bottom plate in the battery charging mechanism of the present invention. Figure 4 It is a schematic diagram showing a state where a battery-equipped fixture of the present invention is placed on the surface of a base plate, (A) a stereoscopic view; (B) a top view.

[0046] like Figure 3 As shown, the bottom plate (4) has a flat bottom surface (41) and is fixed to the workbench by a fixing bracket (43) located on one side of the bottom surface (41). Preferably, two mutually parallel positioning baffles (42) are provided on the bottom surface (41) along the length direction of the bottom plate (4), and the spacing between the two mutually parallel positioning baffles (42) is preferably equal to the width of the fixture (1).

[0047] In addition, it is also preferred that a positioning baffle (44) is provided on the bottom surface (41) of the bottom plate (4) along the width direction of the bottom plate (4) and is perpendicular to the positioning baffle (42). Figure 4 It can be seen that the positioning baffle (44) and the two positioning baffles (42) form a rectangular frame with one side open, and its size is comparable to the size of the outer frame of the fixture (1), so as to more accurately position the fixture (1) and keep its position stable.

[0048] Figure 5 It is a schematic diagram showing the structure of the guide plate in the battery charging mechanism of the utility model, (A) a stereoscopic view; (B) a top view, and (C) a side view.

[0049] like Figure 5 As shown, the guide groove (22a) of the guide plate (22) preferably has an upper notch (22c) and a guide slope (22b) that slopes downwardly and outwardly from the notch (22c).

[0050] The notch (22c) is located above the guide groove (22a), that is, close to the direction of the needle plate (23). In this way, when the charging mechanism (2) descends, the battery (5) passes through the guide slope (22b) and reaches the notch (22c), and fully contacts the top of the charging terminal (21) located in the guide groove (22a), that is, the charging needle. The size of the notch (22c) matches the size of the battery end surface of the battery (5).

[0051] Figure 6 This is a schematic diagram showing the state of contact between the charging terminal and the battery in the battery charging mechanism of the utility model, (A) a cross-sectional view; (B) a partial enlarged view. For the sake of simplicity, Figure 6 Not all charging terminals are shown.

[0052] from Figure 6 It can be seen from the partial enlarged view that in the battery charging mechanism of the utility model, by utilizing the precise guiding method of the guiding inclined surface (22b) in the guide plate (22), the offset battery (5) can be further corrected to ensure that the center of the battery (5) is consistent with the center of the charging terminal (21).

[0053] Figure 7 It is a schematic diagram showing the structure of the charging terminal in the battery charging mechanism of the present invention.

[0054] like Figure 7 As shown, the charging terminal (21) preferably has a charging needle (21a) located at the top (bottom) and a spring (21b) located above the charging needle (21a). The spring in the charging terminal can be pre-compressed by 2 to 3 mm, and the downward force can be controlled by the compression amount of the spring, so as to abut against the end surface of the battery.

[0055] Through the above structure of the charging terminal (21), the spring (21b) in the terminal can be used to absorb the height difference between batteries, further ensuring that the charging needle (21a) is completely in contact with the battery end surface, thereby increasing the charging stability.

[0056] The battery charging mechanism of the utility model can be used for charging a plurality of batteries (5), preferably for pre-charging batteries produced in batches. The type of battery is not particularly limited, and can be a square battery or a cylindrical battery, preferably a lithium battery.

[0057] The battery charging mechanism of the utility model adopts a novel structure with a fixed bottom and a movable top, that is, the fixed structure at the bottom is: the battery fixture is positioned on the fixed base surface, and its movable space is limited by the positioning baffle plate to ensure that the battery end face is consistent with the center of the charging terminal on the needle plate; the movable structure at the top is: the cylinder drives the needle plate and the guide plate to move downward, so that the battery first contacts the guide plate for deviation correction, and after correction, the battery end face fully contacts the charging terminal, and then the battery is supported by the spring in the terminal, and the downward force is controlled by the compression amount so that the charging terminal is completely fitted with the battery end face, thereby achieving the technical effect of being able to stably pre-charge multiple batteries at the same time, greatly improving production efficiency.

[0058] The battery charging mechanism of the present invention has been described above through the accompanying drawings and specific embodiments, but the present invention is not limited to the above-mentioned specific embodiments. Various deformations or element changes can be made without departing from the main purpose of the present invention, and these deformations or element changes are also included in the protection scope of the present invention.

Claims

1. A battery charging mechanism comprising: A fixture (1) having a plurality of battery slots (11) therein, which can accommodate a plurality of batteries (5); The charging assembly (2) comprises at least a needle plate (23), and a plurality of needle-shaped charging terminals (21) are fixed on the needle plate (23); A cylinder (3) located above the charging assembly (2); and The bottom plate (4) has two or more positioning baffles (42, 44). It is characterized in that The jig (1) is positioned on the surface of the base plate (4) through the positioning baffles (42, 44). Driven by the air cylinder (3), the charging assembly (2) can move downward relative to the fixture (1), thereby charging the battery (5) through the charging terminal (21).

2. The battery charging mechanism according to claim 1, characterized in that: The charging assembly (2) is provided with a guide plate (22) below the needle plate (23), and the lower end of the charging terminal (21) extends into a plurality of guide grooves (22a) provided on the guide plate (22).

3. The battery charging mechanism according to claim 2, characterized in that: The guide groove (22a) has an upper notch (22c) and a guide slope (22b) which starts from the notch (22c) and slopes downwardly outwardly, and the size of the notch (22c) matches the size of the battery end face of the battery (5).

4. The battery charging mechanism according to claim 1 or 2, characterized in that: The charging assembly (2) is provided with a connecting plate (24) above the needle plate (23), and the charging assembly (2) is connected to the cylinder (3) via the connecting plate (24).

5. The battery charging mechanism according to claim 1 or 2, characterized in that: The bottom plate (4) is fixed on the workbench via a fixing bracket (43).

6. The battery charging mechanism according to claim 1 or 2, characterized in that: Two parallel positioning baffles (42) are arranged along the length direction of the bottom plate (4), and one positioning baffle (44) is arranged along the width direction of the bottom plate (4).

7. The battery charging mechanism according to claim 1 or 2, characterized in that: The charging terminal (21) has a charging needle (21a) located at the top and a spring (21b) located above the charging needle (21a).

8. The battery charging mechanism according to claim 1 or 2, characterized in that: The charging assembly (2) is provided with a positioning pin (25) which can be engaged with a positioning hole (12) provided in the fixture (1).

9. The battery charging mechanism according to claim 1 or 2, characterized in that: The battery charging mechanism is used for pre-charging the battery (5).

10. The battery charging mechanism according to claim 9, characterized in that: The battery (5) is a square lithium battery.

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