Battery liquid injection device

Abstract

The utility model provides a battery liquid injection device which comprises a battery holder provided with an inner cavity for placing a battery; the liquid injection cup is arranged on the battery holder, the liquid injection cup is provided with a liquid storage cavity for storing electrolyte, the liquid storage cavity is aligned and communicated with the inner cavity, and the liquid injection cup is also provided with a limiting bulge extending outwards; the locking rod is arranged on the outer side of the battery holder and hinged to the battery holder, and the locking rod rotates relative to the battery holder and is used for being connected with the limiting protrusion in a clamped mode or loosening the limiting protrusion. According to the battery liquid injection device, a battery is placed through the battery holder, the stability of the battery is kept, then the liquid injection cup and the battery holder are locked through the locking rod, the stability of the liquid injection process is guaranteed, pure mechanical design is adopted in the whole device, the structure is simple, and the cost is saved.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery production technical field especially relates to a battery liquid injection device. BACKGROUND

[0002] With the rapid development of the battery industry, the application scenarios of batteries gradually increase. In order to enable the battery to cope with various different scene requirements, the research and development personnel need to develop corresponding batteries for various application scenarios. In the design process, the size of the battery may change, thereby making the corresponding battery production equipment also change.

[0003] Among them, the battery is injected, which is an important step in the battery production process. Usually, the battery is injected by using the battery liquid injection device matched with the size of the battery. Therefore, when the size of the battery changes, the original battery liquid injection device cannot be used, and the battery liquid injection device corresponding to the size of the new battery needs to be replaced. The battery liquid injection device usually includes a motor, a cylinder and other driving equipment, and the cost of this type of equipment is high. Therefore, when the battery liquid injection device is replaced, the cost investment is greatly increased. UTILITY MODEL CONTENTS

[0004] The utility model provides a battery liquid injection device to solve the problem of high cost of replacing the battery liquid injection device in the prior art.

[0005] The utility model provides a battery liquid injection device, which comprises:

[0006] A battery seat is provided with an inner cavity for placing a battery;

[0007] A liquid injection cup is arranged on the battery seat, and the liquid injection cup is provided with a liquid storage cavity for storing electrolyte. The liquid storage cavity is in alignment and communication with the inner cavity. The liquid injection cup is also provided with a limiting protrusion extending outward.

[0008] A locking rod is arranged on the outer side of the battery seat and is hingedly connected with the battery seat. The locking rod rotates relative to the battery seat, and is used for clamping or releasing the limiting protrusion.

[0009] According to the battery liquid injection device provided by the utility model, the battery liquid injection device further comprises a pin shaft, the pin shaft is arranged on the outer side of the battery seat, and the locking rod is connected with the battery seat through the pin shaft.

[0010] The utility model provides a kind of battery liquid injection device, the locking rod includes first rod section, second rod section and clamping part, the first rod section and the second rod section are respectively arranged at the both sides of the pin shaft and rotate around the pin shaft, the clamping part is arranged at the one end of the first rod section away from the pin shaft, the second rod section is used to drive the first rod section rotation, to drive the clamping part and the limiting protrusion clamping.

[0011] According to the battery liquid injection device provided by the utility model, the pin shaft is arranged along a direction tangent to the side surface of the battery seat.

[0012] According to the battery liquid injection device provided by the utility model, the battery liquid injection device further includes a first elastic member, the first elastic member is connected to the one end of the second rod section away from the pin shaft, and is used to drive the clamping part to rotate around the pin shaft.

[0013] According to the battery liquid injection device provided by the utility model, the pin shaft is arranged along a direction perpendicular to the side surface of the battery seat.

[0014] According to the battery liquid injection device provided by the utility model, the battery liquid injection device further includes a second elastic member, the second elastic member is arranged at the bottom of the inner cavity, and is used to support the battery.

[0015] According to the battery liquid injection device provided by the utility model, the battery liquid injection device further includes a gasket, the gasket is connected to the one end of the second elastic member towards the battery, and the second elastic member abuts against the battery through the gasket.

[0016] According to the battery liquid injection device provided by the utility model, the gasket is arranged along the outer circle of the bottom of the battery.

[0017] According to the battery liquid injection device provided by the utility model, the battery liquid injection device further includes a sealing member, the sealing member is arranged at the one end of the liquid injection cup towards the inner cavity, and the sealing member abuts against the locking part of the battery.

[0018] The utility model provides a kind of battery liquid injection device, inner cavity is set in battery holder, make battery put into inner cavity, guarantee the stability of battery by battery holder. When battery is put into inner cavity, liquid injection cup is aligned with battery in inner cavity, and inner cavity is sealed by liquid injection cup. Because locking rod is equipped outside battery holder, by locking rod and the abutment of limiting protrusion on liquid injection cup, it can be clamped on battery holder, ensure that liquid injection cup remains stable during liquid injection. The whole battery liquid injection device realizes the stability of liquid injection process by mechanical structure, ensure that liquid injection cup can smoothly carry out liquid injection, compared with the mode of additional driving equipment in prior art, it can save cost, and make structure more simple. Because the battery liquid injection device provided by the utility model is pure mechanical structure, it is more convenient to replace and repair when part is damaged. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme of the utility model or the prior art, the following will be a simple introduction to the drawings needed to be used in the embodiment or the prior art description, obviously, the drawings in the following description are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating labor.

[0020] Figure 1 It is the structure schematic diagram of the battery liquid injection device provided by the utility model.

[0021] Figure 2 It is the front view of the battery liquid injection device provided by the utility model.

[0022] Figure 3 It is the section view of the battery liquid injection device provided by the utility model.

[0023] Figure 4 It is the structure schematic diagram of locking rod provided by the utility model.

[0024] Figure 5 It is Figure 3 The enlarged view of A in

[0025] Reference signs:

[0026] 1, battery holder;11, inner cavity;

[0027] 2, liquid injection cup;21, liquid storage cavity;22, limiting protrusion;

[0028] 3, locking rod;31, first rod segment;32, second rod segment;33, clamping part;

[0029] 4, pin shaft;

[0030] 5, first elastic member;

[0031] 6. Second elastic element;

[0032] 7. Gaskets;

[0033] 8. Seals;

[0034] 9. Battery; 91. Locking part. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0036] The following is combined with Figure 1 This invention describes a battery electrolyte filling device, comprising: a battery holder 1, an electrolyte filling cup 2, and a locking rod 3. The battery holder 1 has an inner cavity 11 for placing a battery 9. The electrolyte filling cup 2 is disposed on the battery holder 1 and has a storage chamber 21 for storing electrolyte. The storage chamber 21 is aligned and communicates with the inner cavity 11. The electrolyte filling cup 2 also has an outwardly extending limiting protrusion 22. The locking rod 3 is disposed on the outside of the battery holder 1 and hinged to it. The locking rod 3 rotates relative to the battery holder 1 to engage or disengage with the limiting protrusion 22.

[0037] Please refer to the above as well. Figures 1 to 3 In this embodiment, a cylindrical battery is used, so the battery holder 1 is cylindrical, and a cylindrical inner cavity 11 is formed inside the battery holder 1, so that the axis of the inner cavity 11 is collinear with the axis of the battery holder 1, that is, the inner cavity 11 is coaxial with the battery holder 1, which can position the inner cavity 11 at the same time as positioning the battery holder 1. In different embodiments, the battery holder 1 can also be designed as a cuboid or other shapes.

[0038] In this embodiment, the battery holder 1 is designed as a cylinder, and the diameter of the inner cavity 11 is designed to correspond to the diameter of the battery 9, meaning that the battery 9 can be placed exactly in the inner cavity 11, and the battery 9 is in contact with the inner wall of the inner cavity 11. Therefore, after inserting the cylindrical battery 9 into the inner cavity 11, the battery 9 is coaxial with the inner cavity 11, and the inner cavity 11 is coaxial with the battery holder 1. This coaxiality allows for better positioning of the battery 9.

[0039] Then the injection cup 2 is inverted on the inner cavity 11, the injection cup 2 stores electrolyte through the storage cavity 21, the storage cavity 21 of the injection cup 2 is aligned with and communicated with the inner cavity 11. Because the battery 9 is arranged in the inner cavity 11, the storage cavity 21 is communicated with the battery 9. Then the battery 9 can be injected through the storage cavity 21, and the electrolyte flows into the battery 9.

[0040] Because the electrolyte in the injection cup 2 flows during the injection process, the injection cup 2 may shake, thereby affecting the stability of the injection cup 2. Therefore, in the embodiment, the locking rod 3 is arranged on the outer side of the battery holder 1, and the locking rod 3 is hinged to the battery holder 1. In order to make the force more uniform, two locking rods 3 are taken as an example in the embodiment, and the two locking rods 3 are symmetrically arranged. In different embodiments, the number and arrangement direction of the locking rod 3 can be adjusted. For example, three locking rods 3 are arranged at the positions of the three vertices of a triangle. And the like, which will not be repeated here.

[0041] Corresponding to the locking rod 3, the limiting protrusion 22 is arranged on the injection cup 2. When the injection cup 2 is installed above the battery holder 1 and aligned with the inner cavity 11, the locking rod 3 is rotated to be above the limiting protrusion 22 and abuts against the limiting protrusion 22. The limiting protrusion 22 is pressed downward by the locking rod 3, thereby driving the injection cup 2 to be pressed downward. Because the battery holder 1 is fixedly arranged below the injection cup 2, the injection cup 2 is pressed downward on the battery holder 1 by the locking rod 3, so that the injection cup 2 is kept stable. And the limiting protrusion 22 is arranged on the side of the injection cup 2 close to the battery holder 1, so that the distance between the locking rod 3 and the limiting protrusion 22 is shortened, thereby shortening the length of the locking rod 3, and making the locking rod 3 easier to lock the limiting protrusion 22.

[0042] In the embodiment, the inner cavity 11 is first arranged in the battery holder 1 to stably install the battery 9, then the locking rod 3 is designed on the side of the battery holder 1, and the limiting protrusion 22 is designed on the side of the injection cup 2, and the stability of the injection cup 2 is ensured by the abutment of the locking rod 3 and the limiting protrusion 22. The whole device does not need to use additional power elements, and the structure is simple and the cost is low. And because the locking rod 3 is hinged to the battery holder 1, and the locking rod 3 abuts against the injection cup 2, the overall connection mode is simple, so that the subsequent maintenance of the whole device is also more simple and convenient.

[0043] When the size of the battery to be injected changes, directly replacing the battery injection device provided by the application will not cause high cost. At the same time, the battery holder 1, the injection cup 2 and the locking rod 3 in the battery injection device can also be selected for corresponding part replacement, which can also reduce the cost.

[0044] In an embodiment, the battery injection device further comprises a pin shaft 4, the pin shaft 4 is arranged on the outer side of the battery holder 1, and the locking rod 3 is connected to the battery holder 1 through the pin shaft 4.

[0045] As shown in Figure 1 , a pin shaft 4 is arranged outside the battery holder 1, and the pin shaft 4 penetrates the battery holder 1 and the locking rod 3 at the same time, so that the battery holder 1 and the locking rod 3 are connected, and the locking rod 3 can rotate relative to the battery holder 1. The pin shaft 4 is used to hinge the battery holder 1 and the locking rod 3, so that the installation is more simple and convenient. In different embodiments, other hinging methods such as hinges can also be used.

[0046] In an embodiment, the locking rod 3 includes a first rod segment 31, a second rod segment 32, and a clamping portion 33. The first rod segment 31 and the second rod segment 32 are respectively arranged on the two sides of the pin shaft 4 and rotate around the pin shaft 4. The clamping portion 33 is arranged at one end of the first rod segment 31 away from the pin shaft 4. The second rod segment 32 is used to drive the first rod segment 31 to rotate, so as to drive the clamping portion 33 to clamp with the limiting protrusion 22.

[0047] Please refer to Figures 1 to 4 , the locking rod 3 is divided into the first rod segment 31 and the second rod segment 32, and the pin shaft 4 is located at the connection position of the first rod segment 31 and the second rod segment 32. According to the principle of the lever, when one of the first rod segment 31 and the second rod segment 32 rotates, the other one can be driven to rotate. In this embodiment, the clamping portion 33 is arranged at one end of the first rod segment 31 away from the pin shaft 4, so the first rod segment 31 needs to be driven to rotate by the second rod segment 32. Similarly, according to the principle of the lever, the farther the distance between the clamping portion 33 and the pin shaft 4, the greater the force arm between the clamping portion 33 and the pin shaft 4, and the greater the torque generated.

[0048] In this embodiment, the pin shaft 4 is arranged at the middle part of the locking rod 3, so that the pin shaft 4 and the locking rod 3 form a lever, and a larger torque can be generated in the first rod segment 31 by driving the second rod segment 32, so that the first rod segment 31 drives the clamping portion 33 to press the liquid injection cup 2 more tightly.

[0049] In an embodiment, the pin shaft 4 is arranged along a direction tangent to the side surface of the battery holder 1. In an embodiment, the battery liquid injection device further includes a first elastic member 5 connected to one end of the second rod segment 32 away from the pin shaft 4, and used to drive the clamping portion 33 to rotate around the pin shaft 4.

[0050] Please refer to Figures 1 to 3 , in this embodiment, the battery holder 1 is cylindrical, and the pin shaft 4 is tangent to the battery holder 1. In different embodiments, when the battery holder 1 has other shapes, the pin shaft 4 is tangent to the battery holder 1, that is, the pin shaft 4 is parallel to the side surface of the battery holder 1, and the pin shaft 4 is arranged in a horizontal direction. After the locking rod 3 is installed on the pin shaft 4, the locking rod 3 rotates around the axis of the pin shaft 4 as the rotation center.

[0051] The length of the locking rod 3 and the height position of the limiting protrusion 22 are adjusted, so that the limiting protrusion 22 is located on the rotating route of the clamping part 33, and the limiting protrusion 22 is not located at the vertex of the rotating route of the clamping part 33. Then, the clamping part 33 can be rotated by driving the second rod segment 32, so that the clamping part 33 rotates from top to bottom to the position of abutting against the limiting protrusion 22. Because the limiting protrusion 22 is located on the rotating route of the clamping part 33, after the clamping part 33 abuts against the limiting protrusion 22, the limiting protrusion 22 blocks the rotation of the clamping part 33, so that the clamping part 33 cannot continue to rotate, but the limiting protrusion 22 is pressed tightly.

[0052] In order to make the driving of the second rod segment 32 more simple and convenient, the first elastic member 5 is arranged at the end of the second rod segment 32 away from the pin shaft 4. In the embodiment, the first elastic member 5 is selected as a spring, and the spring is a compression spring, that is, the first elastic member 5 provides a force of pushing to both ends. In different embodiments, the first elastic member 5 can also be selected as a part with elasticity such as silica gel, and also needs to provide a force of pushing to both ends.

[0053] Because one end of the first elastic member 5 is connected with the battery holder 1, and the battery holder 1 is fixedly arranged, the force of pushing to both ends generated by the first elastic member 5 can only drive the second rod segment 32 to rotate after the other end is connected with the second rod segment 32, so that the clamping part 33 presses the limiting protrusion 22 tightly. When it is needed to take out the liquid injection cup 2, the pressing of the clamping part 33 needs to be contacted first. At this time, the second rod segment 32 is close to the center by manually pressing the first elastic member 5, so that the clamping part 33 on the first rod segment 31 is rotated to the outside, thereby unlocking the liquid injection cup 2.

[0054] In the embodiment, the liquid injection cup 2 is arranged on the battery holder 1 and is aligned with the inner cavity 11 at the center of the battery holder 1. The locking rod 3 is arranged on the outside of the battery holder 1, so that the locking rod 3 is driven to close to the center, thereby pressing the liquid injection cup 2 tightly.

[0055] In the embodiment, the locking of the locking rod 3 is realized by the first elastic member 5, so that the structure of the whole device is simpler and the operation is more convenient.

[0056] In an embodiment, the pin shaft 4 is arranged along the direction perpendicular to the side surface of the battery holder 1.

[0057] In the embodiment, another arrangement of the pin shaft 4 is provided (not shown in the figure). Because the battery holder 1 is cylindrical in the embodiment, the direction perpendicular to the side surface of the battery holder 1 is that the pin shaft 4 is arranged along the radial direction of the battery holder 1 in the plane where the pin shaft 4 is located. At this time, the locking rod 3 only needs to include the first rod segment 31 and the clamping part 33. In the unlocked state, the first rod segment 31 is rotated to the lower side around the pin shaft 4 due to the gravity of the clamping part 33.

[0058] In this embodiment, the length of the first rod segment 31 is designed to be equal to the vertical distance between the limiting protrusion 22 and the pin 4 after the injection cup 2 is placed on the battery holder 1. One end of the first rod segment 31 is connected to the pin 4, and the other end of the first rod segment 31 is provided with a locking part 33. Therefore, when it is necessary to lock the injection cup 2, the first rod segment 31 is rotated so that the locking part 33 rotates above the limiting protrusion 22. At this time, the locking part 33 just presses down against the limiting protrusion 22, thereby locking the injection cup 2.

[0059] In one embodiment, the battery electrolyte filling device further includes a second elastic member 6, which is disposed at the bottom of the inner cavity 11 for supporting the battery 9. In another embodiment, the battery electrolyte filling device further includes a gasket 7, which is connected to the end of the second elastic member 6 facing the battery 9, and the second elastic member 6 abuts against the battery 9 through the gasket 7. In one embodiment, the gasket 7 is arranged along the outer ring of the bottom of the battery 9.

[0060] like Figure 3 As shown, a second elastic element 6 is provided at the bottom of the inner cavity 11, preferably a compression spring. When the battery 9 is inserted into the inner cavity 11, the battery 9 abuts against the second elastic element 6. When the height of the battery 9 is normal, the battery 9 compresses the second elastic element 6 downwards, so that the upper end of the battery 9 is flush with the upper end of the inner cavity 11, thereby allowing the liquid filling cup 2 to connect normally with the battery 9. When the height of the battery 9 is insufficient, the second elastic element 6 can be used to push the battery 9 upwards, so that the battery 9 is still in a position where its upper end is flush with the upper end of the inner cavity 11.

[0061] Furthermore, since the casing of battery 9 is metal, and the second elastic member 6 is also metal, a gasket 7 is provided at the contact point between the second elastic member 6 and battery 9 to prevent the second elastic member 6 from scratching the battery 9. The gasket 7 increases the contact area with the battery 9, thereby protecting the casing of battery 9.

[0062] Preferably, the bottom of the battery 9 casing has lower strength near the center, while the area where the outer ring of the bottom of the battery 9 casing connects to the side has higher strength. Therefore, in this embodiment, the gasket 7 is arranged along the outer ring of the bottom of the battery 9, so that the battery 9 is supported by the stronger outer ring bottom.

[0063] In one embodiment, the battery filling device further includes a sealing member 8, which is disposed at one end of the filling cup 2 facing the inner cavity 11. The sealing member 8 abuts against the locking part 91 of the battery 9 to seal the connection between the filling cup 2 and the battery 9.

[0064] During the liquid filling process of the liquid filling cup 2, it is necessary to maintain a seal between the liquid filling cup 2 and the battery 9. For example... Figure 3As shown, the top of the battery 9 in the embodiment is provided with an inwardly recessed locking portion 91, and then the end of the liquid injection cup 2 is provided with a sealing member 8. The locking portion 91 is a structural feature common to this type of square shell cylindrical battery, and will not be described here. In the embodiment, the locking portion 91 is in the shape of a U, and the opening of the locking portion 91 is arranged horizontally outwardly, so that the top of the locking portion 91 is a flat end face, and the outermost side of the locking portion 91 continues to extend upwardly. When the liquid injection cup 2 is installed above the battery seat 1 and aligned with the battery 9 in the inner cavity 11, the sealing member 8 is brought into abutment with the locking portion 91 of the battery 9. The outer wall of the sealing member 8 is in abutment with the shell of the battery 9, and the bottom of the sealing member 8 is in abutment with the upper end face of the locking portion 91, thereby achieving sealing.

[0065] In the embodiment, the battery 9 is sealed by abutting the sealing member 8 against the locking portion 91, so that crystallization is avoided above the locking portion 91 due to contact with the electrolyte, and crystallization is avoided, which can improve the quality and service life of the battery 9. In different embodiments, a sealing ring or other sealing methods can also be selected.

[0066] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A battery liquid injection device, characterized by comprising: The battery liquid injection device comprises a battery seat (1) provided with an inner cavity (11) for placing a battery (9); a liquid injection cup (2) arranged on the battery seat (1), the liquid injection cup (2) is provided with a liquid storage cavity (21) for storing electrolyte, the liquid storage cavity (21) is in alignment and communication with the inner cavity (11), the liquid injection cup (2) is further provided with a limiting protrusion (22) extending outward; a locking rod (3) arranged on the outer side of the battery seat (1) and hinged with the battery seat (1), the locking rod (3) rotates relative to the battery seat (1) to be in clamping connection with the limiting protrusion (22) or to release the limiting protrusion (22). The battery liquid injection device further comprises a pin shaft (4) arranged on the outer side of the battery seat (1), and the locking rod (3) is connected with the battery seat (1) through the pin shaft (4). The locking rod (3) comprises a first rod segment (31), a second rod segment (32) and a clamping part (33), the first rod segment (31) and the second rod segment (32) are respectively arranged on both sides of the pin shaft (4) and rotate around the pin shaft (4), the clamping part (33) is arranged at one end of the first rod segment (31) away from the pin shaft (4), and the second rod segment (32) is used to drive the first rod segment (31) to rotate, so as to drive the clamping part (33) to clamp the limiting protrusion (22). The pin shaft (4) is arranged along a direction tangent to the side surface of the battery seat (1).

2. The battery liquid injecting apparatus according to claim 1, wherein The battery liquid injection device further comprises a first elastic member (5) connected to one end of the second rod segment (32) away from the pin shaft (4), which is used to drive the clamping part (33) to rotate around the pin shaft (4).

3. The battery liquid injecting apparatus according to claim 2, wherein The pin shaft (4) is arranged along a direction perpendicular to the side surface of the battery seat (1).

4. The battery liquid injecting apparatus according to claim 2, wherein The battery liquid injection device further comprises a second elastic member (6) arranged at the bottom of the inner cavity (11) and used to support the battery (9).

5. The battery liquid injecting apparatus according to claim 3, wherein The battery liquid injection device further comprises a gasket (7) connected to one end of the second elastic member (6) facing the battery (9), and the second elastic member (6) abuts against the battery (9) through the gasket (7).

6. The battery liquid injecting apparatus according to claim 2, wherein The gasket (7) is arranged along the outer circle of the bottom of the battery (9).

7. The battery liquid injecting apparatus according to claim 1, wherein The battery liquid injection device further comprises a sealing member (8) arranged at one end of the liquid injection cup (2) facing the inner cavity (11), and the sealing member (8) abuts against the locking part (91) of the battery (9).

8. The battery liquid injecting apparatus according to claim 7, wherein ​ 9. The battery liquid injecting apparatus according to claim 8, wherein ​ 10. The battery liquid injecting apparatus according to claim 1, wherein ​

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