Novel lithium battery liquid injection pump

Abstract

The utility model relates to the technical field of lithium ion battery production equipment, in particular to a novel lithium battery liquid injection pump which comprises a pump body and a pump base, the pump base comprises a first installation base and a second installation base, and the first installation base can be installed at the bottom of the pump body through a first bolt. The first installation base can be installed on the second installation base through the second bolt, when the liquid injection pump is installed, the pump body is connected with the first installation base firstly, then the first installation base is connected with the second installation base, when the liquid injection pump is disassembled, the first installation base is disassembled from the second installation base firstly, then the pump body is disassembled from the first installation base, and then the pump body is disassembled from the second installation base. And all the steps are carried out under the visual condition, so that the difficulty and the required time of disassembly and maintenance of the liquid injection pump are reduced, and the efficiency of disassembly and maintenance of the liquid injection pump is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of lithium-ion battery production equipment, specifically to a novel lithium battery injection pump. Background Technology

[0002] Currently, lithium battery filling pumps consist of two parts: the pump body and the base. The pump body is fixed to the base by four M4X10 screws with countersunk holes at the bottom. Since the connecting screws between the pump body and the base are located on the back of the base, i.e., the bottom, the screw positions are determined by touch when disassembling and assembling the pump body, which is inefficient and difficult. Disassembly is also difficult and tedious when the filling pump is stuck, resulting in long repair times (approximately 36 minutes). Furthermore, due to the vibration of the pump body during operation, the screws connecting the pump body and the base are prone to loosening, causing each device to experience a reduced filling frequency once a month, resulting in the degradation of a batch of batteries. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a new type of lithium battery injection pump, which facilitates the disassembly and assembly of the pump body and the pump base, and can avoid the loosening of the connection structure due to pump body vibration.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: a novel lithium battery injection pump, including a pump body and a pump base. The bottom of the pump body is provided with a mounting hole suitable for connection with the pump base. The pump base includes a first mounting seat and a second mounting seat. The first mounting seat is provided with a first connecting hole. The first mounting seat is located at the bottom of the pump body. The first connecting hole corresponds to and communicates with the mounting hole of the pump body. A first bolt passing through the first connecting hole is connected to the mounting hole and connects the pump body to the first mounting seat. The first mounting seat is also provided with a second connecting hole. The second mounting seat is provided with a third connecting hole. The first mounting seat is located on the second mounting seat. The second connecting hole corresponds to and communicates with the third connecting hole. The first mounting seat is connected to the second mounting seat by a second bolt passing through the second connecting hole and the third mounting hole. When installing the pump body, first connect the first mounting base to the pump body, and then connect the first mounting base to the second mounting base. When disassembling the pump body, first remove the first mounting base from the second mounting base, and then remove the pump body from the first mounting base. Compared with the existing structure, the disassembly and assembly of the pump body can be carried out under visual conditions, which effectively reduces the difficulty of disassembly and assembly of the pump body.

[0005] As an optional solution, a limiting structure is provided between the first mounting base and the second mounting base. This limiting structure prevents positional misalignment between the first and second mounting bases caused by vibrations during pump operation.

[0006] As an optional solution, the limiting structure includes a limiting protrusion and a limiting slot. The bottom of the first mounting base is provided with a limiting protrusion, and the first connecting hole passes through the limiting protrusion. The top of the second mounting base is provided with a limiting slot. When the first mounting base and the second mounting base are connected, the limiting protrusion is embedded in the limiting slot.

[0007] As an optional solution, the limiting structure includes a limiting protrusion and a limiting slot. The bottom of the first mounting base is provided with a limiting slot, and the first connecting hole passes through the limiting slot. The top of the second mounting base is provided with a limiting protrusion. When the first mounting base and the second mounting base are connected, the limiting protrusion is embedded in the limiting slot.

[0008] As an optional solution, the second bolt is equipped with a spring washer. The spring washer on the second bolt prevents it from loosening due to pump body vibration.

[0009] As an optional solution, the first connecting hole is a countersunk hole, and the countersunk portion of the first connecting hole is located at the bottom of the first mounting base.

[0010] As an optional solution, the second mounting base is also provided with a fourth connecting hole, and an arc-shaped waist hole is provided on the second mounting base with the fourth connecting hole as the center.

[0011] As an optional solution, the fourth connecting hole and the arc-shaped waist hole are located on both sides of the first mounting base.

[0012] Compared with the prior art, the present invention has the following advantages: the lithium battery injection pump of this application can be disassembled and assembled under visual conditions, which reduces the difficulty and time required for disassembly and assembly of the pump body compared with the existing structure, and improves the efficiency of pump body disassembly and maintenance. Moreover, through the limiting structure and the spring washer configured with the second bolt, the loosening of bolts due to pump body vibration during use is effectively avoided, thus improving the stability of the injection pump. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the injection pump.

[0015] Figure 2 An exploded view of the injection pump from one perspective;

[0016] Figure 3An exploded view of the injection pump from another perspective;

[0017] Figure 4 A schematic diagram showing the installation and use of the injection pump;

[0018] In the diagram: 1. Pump body, 2. First mounting base, 3. Second mounting base, 4. Second bolt, 5. Limiting protrusion, 6. Limiting slot, 7. Spring washer, 8. Fourth connecting hole, 9. Arc-shaped waist hole. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example

[0020] like Figures 1-4 As shown, a novel lithium battery injection pump includes a pump body 1 and a pump base. The pump body 1 has the existing structure of an injection pump, and a mounting hole is provided at the bottom of the pump body 1. The mounting hole is a threaded hole. The pump base includes a first mounting seat 2 and a second mounting seat 3. The first mounting seat 2 is provided with a first connecting hole. The pump body 1 is mounted on the first mounting seat 2, and each mounting hole communicates with each corresponding first connecting hole. A first bolt passing through the first connecting hole is connected to the mounting hole, thereby connecting the pump body 1 to the first mounting seat 2.

[0021] The first mounting base 2 is provided with a second connecting hole, and the second mounting base 3 is provided with a third connecting hole. The first mounting base 2 is mounted on the second mounting base, and each second connecting hole communicates with each third connecting hole. The first mounting base 2 is connected to the second mounting base 3 by a second bolt 4 passing through the second connecting hole and the third mounting hole. The third connecting hole can be a threaded hole, through which the second bolt 4 passes and connects to the third connecting hole, thereby connecting the first mounting base 2 and the second mounting base 3. Alternatively, the third connecting hole can be a through hole or a threaded hole with a diameter larger than that of the second bolt 4, through which the second bolt 4 passes and engages with a nut to connect the first mounting base 2 and the second mounting base 3.

[0022] The first bolt extends from the bottom of the first mounting base 2 into the first connecting hole to connect the pump body 1 to the first mounting base 2. The second bolt 4 then passes through the second and third connecting holes from the top of the first mounting base 2 to install the first mounting base 2 onto the second mounting base 3. When the pump body 1 needs to be disassembled for maintenance, the first mounting base 2 is removed from the second mounting base 3, and then the pump body 1 is removed from the first mounting base 2. When installing the pump body 1, the pump body 1 is first installed onto the first mounting base 2, and then the first mounting base 2 is installed onto the second mounting base 3. Compared with the structure of the prior art, the disassembly process of the pump body 1 is visible, avoiding operation from the bottom or back blind spot of the pump base, reducing the difficulty of disassembling and assembling the pump body 1, and improving the disassembly and assembly efficiency of the injection pump.

[0023] In a preferred embodiment, the first connecting hole is a countersunk hole, with the countersunk portion at the bottom of the first mounting base 2. When the first bolt connects the pump body 1 to the first mounting base 2, the end of the first bolt is at the countersunk portion of the countersunk hole, thus avoiding affecting the fit between the first mounting base 2 and the second mounting base 3.

[0024] To prevent positional misalignment between the first mounting base 2 and the second mounting base 3 during use, a limiting structure is provided between them. This limiting structure includes a limiting protrusion 5 and a limiting groove 6. (See also...) Figures 1-4 In some embodiments, the bottom of the first mounting base 2 is provided with a limiting protrusion 5, and the first connecting hole is opened at the position corresponding to the limiting protrusion 5 and passes through the limiting protrusion 5. The top of the second mounting base 3 is provided with a limiting groove 6. When the first mounting base 2 and the second mounting base 3 are connected, the first mounting base 2 is placed on the second mounting base 3 and the limiting protrusion 5 is embedded in the limiting groove 6. Then, the first mounting base 2 and the second mounting base 3 are connected by the second bolt 4, effectively preventing positional displacement between the first mounting base 2 and the second mounting base 3. Of course, the limiting protrusion 5 can also be placed at the top of the second mounting base 3, and the limiting groove 6 can be placed at the bottom of the first mounting base 2. The first connecting hole is placed in the area corresponding to the limiting groove 6 and passes through the limiting groove 6. When the first mounting base 2 and the second mounting base 3 are connected, the limiting protrusion 5 is embedded in the limiting groove 6.

[0025] In a further embodiment, the second bolt 4 is equipped with a spring washer 7. The spring washer 7 improves the connection effect of the second bolt 4 between the first mounting base 2 and the second mounting base 3, preventing the second bolt 4 from loosening due to vibration during pump body 1 operation, and reducing the frequency of loosening of the injection pump. Of course, the first bolt can also be equipped with a spring washer 7.

[0026] The second mounting base 3 is also provided with a fourth connecting hole 8 and an arc-shaped waist hole 9. The arc-shaped waist hole 9 is set with the fourth connecting hole 8 as the center. Using the third bolt passing through the arc-shaped waist hole 9 and the fourth bolt passing through the fourth connecting hole 8, the second mounting base 3 can be installed onto a structure such as a machine base. Moreover, after loosening the third and fourth bolts, the second mounting base 3 can also be rotated around the fourth connecting hole 8 to adjust its position, thereby adjusting the installation orientation of the injection pump. Preferably, the fourth connecting hole 8 and the arc-shaped waist hole 9 are respectively set on both sides of the first mounting base 2 to avoid the pump body 1 affecting the third and fourth bolts.

[0027] After applying the patented solution to the workshop, the applicant observed and statistically verified that the injection pump's injection volume adjustment and injection stability met the equipment's process requirements. From June 2023 to June 2024, there were no issues of over- or under-injection caused by the injection pump's structure. The injection pump's maintenance time was reduced from approximately 36 minutes to approximately 16 minutes, improving maintenance efficiency by 50%. From June 2023 to June 2024, there were no instances of battery degradation caused by a loose injection pump in the workshop.

[0028] In this specification, the terms "an embodiment," "example," "specific example," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0029] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A novel lithium battery liquid injection pump characterized by: The pump body (1) and the pump base are included, the bottom of the pump body (1) is provided with a mounting hole suitable for connecting with the pump base, the pump base includes a first mounting seat (2) and a second mounting seat (3), the first mounting seat (2) is provided with a first connecting hole, the first mounting seat (2) is arranged at the bottom of the pump body (1), the first connecting hole is communicated with the mounting hole in correspondence, the first bolt arranged through the first connecting hole is connected with the mounting hole and connects the pump body (1) with the first mounting seat (2), the first mounting seat (2) is further provided with a second connecting hole, the second mounting seat (3) is provided with a third connecting hole, the first mounting seat (2) is arranged on the second mounting seat (3), the second connecting hole is communicated with the third connecting hole in correspondence, and the first mounting seat (2) is connected with the second mounting seat (3) through the second bolt (4) arranged through the second connecting hole and the third connecting hole.

2. The novel lithium battery liquid injection pump according to claim 1, characterized in that: The first mounting seat (2) and the second mounting seat (3) are provided with a limiting structure.

3. The novel lithium battery liquid injection pump according to claim 2, characterized in that: The limiting structure includes a limiting protrusion (5) and a limiting clamping groove (6), the bottom of the first mounting seat (2) is provided with the limiting protrusion (5), the first connecting hole is arranged through the limiting protrusion (5), and the top of the second mounting seat (3) is provided with the limiting clamping groove (6); when the first mounting seat (2) is connected with the second mounting seat (3), the limiting protrusion (5) is embedded into the limiting clamping groove (6).

4. The novel lithium battery liquid injection pump according to claim 2, characterized in that: The limiting structure includes a limiting protrusion (5) and a limiting clamping groove (6), the bottom of the first mounting seat (2) is provided with the limiting clamping groove (6), the first connecting hole is arranged through the limiting clamping groove (6), and the top of the second mounting seat (3) is provided with the limiting protrusion (5); when the first mounting seat (2) is connected with the second mounting seat (3), the limiting protrusion (5) is embedded into the limiting clamping groove (6).

5. The novel lithium battery liquid injection pump according to claim 3 or 4, characterized in that: The second bolt (4) is provided with a spring washer (7).

6. The novel lithium battery liquid injection pump according to claim 3 or 4, characterized in that: The first connecting hole is a counterbore hole, and the counterbore part of the first connecting hole is arranged at the bottom of the first mounting seat (2).

7. The novel lithium battery liquid injection pump according to claim 2, characterized in that: The second mounting seat (3) is further provided with a fourth connecting hole (8), and the second mounting seat (3) is provided with an arc waist hole (9) with the fourth connecting hole (8) as the center.

8. The novel lithium battery liquid injection pump according to claim 7, characterized in that: The fourth connecting hole (8) and the arc waist hole (9) are respectively arranged on the two sides of the first mounting seat (2).

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