Storage battery box assembly and processing technology

Abstract

The invention relates to the technical field of storage batteries, in particular to a storage battery box assembly and a processing technology, the storage battery box assembly comprises a shell with an upward opening, and a storage battery assembly is arranged in the shell through the opening; the bottom plate is arranged at the bottom of the shell; the end cover covers the opening end of the shell, and a liquid adding hole is formed in the end cover; the cover plate can completely cover the liquid adding hole; and the liquid adding unit is detachably installed on the cover plate, a flow channel is formed in the cover plate, and the liquid adding unit supplements liquid into the shell through the flow channel and the liquid adding hole. By means of the arrangement of the liquid adding unit, the cover plate and the like, when distilled water needs to be supplemented, the distilled water in the liquid storage bottle can enter the plug body through the capillary holes by pressing the liquid storage bottle and further drops onto the liquid adding hole through the flow channel and the dripping hole to achieve liquid adding, and due to the fact that the cover plate does not need to be opened in the liquid adding process, the distilled water can be conveniently added. Dust and other impurity particles are prevented from entering, operation is easy and convenient, and time and labor are saved.

Description

Technical Field

[0001] The present application relates to the technical field of batteries, and in particular to a battery box assembly and a processing technology. Background Art

[0002] The electrolyte of the battery is made of sulfuric acid and distilled water mixed in proportion. During use, due to the increase in battery temperature and frequent charging and discharging, the electrolyte ratio may be unbalanced or even the sulfuric acid concentration may increase, causing corrosion. Therefore, it is necessary to regularly add an appropriate amount of distilled water to maintain the normal charging and discharging function of the electrolyte and extend the service life of the battery.

[0003] In the related art, for non-maintenance-free batteries, the main method of adding distilled water to the battery is to use a syringe or a dropper to extract a certain amount of distilled water, then use a tool to open the filling cap on the battery box, align the outlet end of the syringe or dropper with the filling hole to add distilled water, and then re-secure the filling cap after the filling is completed.

[0004] The problem with the related art is that, since the filling cap needs to be opened to expose the filling hole during filling, dust and other particulate impurities may enter due to the influence of the external environment, affecting the performance of the battery. In addition, in order to ensure the stability of the overall structure of the battery box and prevent some components of the battery box from loosening due to external vibrations, the filling cap is fixed with glue. This fixing method makes it very labor-intensive to disassemble and assemble the filling cap when filling is required. Summary of the invention

[0005] In order to facilitate the filling of batteries and reduce the contamination of the interior of the batteries by external dust particles, the present application provides a battery box assembly and a processing technology.

[0006] On the one hand, the present application provides a battery box assembly, which adopts the following technical solution:

[0007] A battery box assembly, comprising:

[0008] The housing has an upward opening, and the battery assembly is installed in the housing through the opening;

[0009] A bottom plate, mounted on the bottom of the shell;

[0010] An end cover, covering the open end of the shell, and provided with a liquid adding hole;

[0011] A cover plate, detachably mounted on the end cover and capable of completely covering the liquid filling hole;

[0012] The liquid adding unit is detachably mounted on the cover plate. A flow channel is provided in the cover plate. The liquid adding unit replenishes liquid into the shell through the flow channel and the liquid adding hole.

[0013] Optionally, the liquid adding unit comprises:

[0014] The liquid storage bottle contains liquid and has a liquid outlet on its surface that communicates with the interior;

[0015] A liquid outlet assembly, installed at the liquid outlet, used to control the liquid to flow out of the liquid outlet or to close the liquid outlet;

[0016] A mounting seat is formed on the cover plate. The mounting seat is a hollow tubular structure and one end of the mounting seat is connected to the flow channel. The liquid adding unit is fixed to the cover plate through the mounting seat.

[0017] Optionally, a sealing ring extending toward the inside of the liquid storage bottle is provided at the liquid outlet, and the liquid outlet assembly includes:

[0018] A plug body is slidably arranged inside the sealing ring, the plug body is hollow and has capillary holes on its surface, and the capillary holes communicate with the outside and the inside of the plug body;

[0019] A lower end plate, fixed in an annular shape to an end of the plug body away from the liquid storage bottle;

[0020] An elastic member, which is sleeved on the outer side of the plug body and has one end abutting against the liquid storage bottle and the other end abutting against the lower end plate;

[0021] The capillary holes are formed on the outer peripheral surface of the portion of the plug body extending into the liquid storage bottle.

[0022] Optionally, a ring is provided on the side of the lower end plate facing the liquid storage bottle, the elastic member is arranged in the space surrounded by the ring, a ferrule is clamped on the outer side of the ring, and a notch is formed on one side of the ferrule, through which the ferrule can be clamped between the liquid storage bottle and the stopper body, or the ferrule can be removed from between the liquid storage bottle and the stopper body.

[0023] Optionally, an internal thread is formed on the inner wall of the end of the plug away from the liquid storage bottle, the mounting seat is a threaded mounting seat, and the plug is screwed onto the threaded mounting seat via the internal thread to connect the plug, the mounting seat and the flow channel.

[0024] Optionally, a drip hole connected to the flow channel is opened on one side of the cover plate facing the end cover, the drip hole is correspondingly arranged above the liquid adding hole, the surface of the cover plate is recessed to form a drip groove, and the drip hole is formed in the drip groove.

[0025] Optionally, an embedding groove is formed on the end cover, the liquid adding holes are distributed in the embedding groove, and the cover plate includes:

[0026] The main body is clamped in the embedding groove and covers the liquid filling hole;

[0027] A side plate is arranged at at least one end of the main body;.

[0028] A movable plate is installed on one side of the bottom plate facing the shell, and a connecting component is arranged between the movable plate and the side plate.

[0029] Optionally, the connection component includes:

[0030] A first rigid connection portion, wherein an end of the side plate away from the main body portion is formed with an axial hole, and the first rigid connection portion is inserted into the axial hole and extends toward the movable plate;

[0031] A second rigid connection part, wherein the movable plate is provided with an axial hole, and the second rigid connection part is movably arranged in the axial hole and extends toward the side plate;

[0032] An elastic connection part has one end connected to the first rigid connection part and the other end connected to the second rigid connection part, and the elastic connection part can be extended and retracted in a vertical direction.

[0033] Optionally, two ends of the elastic connection part are rotatably connected to the first rigid connection part and the second rigid connection part respectively, so that the second rigid connection part can move in the lateral direction.

[0034] On the other hand, the present application also provides a processing technology for a battery box assembly, which adopts the following technical solution:

[0035] A processing technology for a battery box assembly includes the following steps:

[0036] S1. Pre-drying the raw materials for production to remove moisture and impurities;

[0037] S2. The raw materials are molded by injection molding, die casting and machining steps to obtain the components;

[0038] S3. The formed bottom plate is heat-sealed to the bottom of the housing;

[0039] S4. The formed end cap is fixed to the top of the housing by adhesive bonding;

[0040] S5. The main body of the cover is mounted in the mounting groove, and the side panel is connected to the movable panel by a connecting assembly;

[0041] S6. Install the liquid adding unit on the cover plate.

[0042] In summary, the present application includes at least one of the following beneficial technical effects:

[0043] 1. By using the settings of the liquid adding unit and the cover plate, when distilled water needs to be added, the liquid storage bottle can be pressed to allow the internal distilled water to enter the plug body through the capillary pores, and further drip onto the liquid adding hole through the flow channel and the drip hole to achieve liquid addition. Since the cover plate does not need to be opened during the liquid addition process, dust and other impurities are prevented from entering, and the operation is simple and convenient, saving time and effort;

[0044] 2. By using the setting of the card sleeve, after the liquid addition is completed or when the liquid addition is not needed, the position of the liquid storage bottle can be fixed by installing the card sleeve between the liquid storage bottle and the plug body, so as to prevent the liquid storage bottle from shaking when the battery is affected by external vibrations, thereby causing the distilled water to leak out;

[0045] 3. By utilizing the setting of the connecting assembly, when the side plate is connected to the movable plate, the elastic connecting portion is deformed and a reaction force is applied to the side plate and the movable plate at the same time, thereby firmly connecting the cover plate and the bottom plate, improving the stability of the overall structure of the battery box assembly, and making the cover plate fit closely with the end cover, thereby improving the sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 It is a schematic diagram of the side cross-sectional structure of an embodiment of the present application.

[0047] Figure 2 yes Figure 1 A schematic diagram of the enlarged structure at point A in the middle.

[0048] Figure 3 It is a schematic diagram of the front cross-sectional structure of an embodiment of the present application.

[0049] Figure 4 1. A side view structural schematic diagram of an embodiment of the present application.

[0050] Figure numerals: 1. shell; 2. bottom plate; 21. movable plate; 3. end cover; 4. cover plate; 41. flow channel; 42. mounting seat; 43. drip hole; 44. drip groove; 45. main body; 46. side plate; 5. liquid adding hole; 6. liquid adding unit; 61. liquid storage bottle; 611. sealing ring; 62. liquid outlet assembly; 621. plug body; 6211. capillary hole; 622. lower end plate; 6221. sleeve ring; 623. elastic member; 7. ferrule; 8. connecting assembly; 81. first rigid connecting part; 82. second rigid connecting part; 83. elastic connecting part. DETAILED DESCRIPTION

[0051] The following is combined with Figure 1-4 This application is described in further detail.

[0052] The present application embodiment discloses a battery box assembly. Figure 1A battery box assembly includes a shell 1, which is a hollow square box body with an upward opening. The shell 1 is used to provide installation space for other components of the battery and protect the components. The other components are specifically the plates, separators, electrolytes, etc. arranged in the shell 1. Since they are common knowledge, they are not described here.

[0053] The opening at the upper end of the housing 1 is mounted on the end cap 3, which is used to seal the opening. A liquid filling hole 5 is provided on the end cap 3, through which the user can add distilled water to the housing 1 to ensure battery performance and extend the service life. In addition, other accessories such as positive and negative electrode connectors should also be provided on the end cap 3. There are multiple liquid filling holes 5, and the specific number is determined according to the number of battery assemblies installed in the housing 1. The multiple liquid filling holes 5 are arranged at intervals along the length direction of the end cap 3.

[0054] Reference Figure 1 The end cover 3 is provided with an embedding groove, which is a rectangular groove body, and its width is greater than the outer diameter of the liquid adding hole 5. The multiple liquid adding holes 5 are arranged in the embedding groove. A cover plate 4 is detachably installed in the embedding groove, and the cover plate 4 completely covers the multiple liquid adding holes 5 to maintain sealing. A liquid adding unit 6 is detachably installed on the cover plate 4, and a flow channel 41 is provided in the cover plate 4. The liquid adding unit 6 replenishes distilled water into the housing 1 through the flow channel 41 and the liquid adding holes 5.

[0055] The main body of the flow channel 41 should be arranged to extend along the arrangement direction of the multiple liquid adding holes 5, and a drip hole 43 is opened at the position above the cover plate 4 corresponding to each liquid adding hole 5. The drip hole 43 is connected to the flow channel 41. The above-mentioned liquid adding unit 6 can introduce distilled water into the flow channel 41. The distilled water flows along the flow channel 41 and is discharged through the drip hole 43, and drips from the top of the liquid adding hole 5 for liquid replenishment.

[0056] Reference Figure 1 and Figure 2 Furthermore, the liquid adding unit 6 includes a liquid storage bottle 61 and a liquid outlet assembly 62. The liquid storage bottle 61 contains distilled water. A liquid outlet connected to the inside of the liquid storage bottle 61 is provided on one side of the liquid storage bottle 61 facing the cover plate 4. The liquid outlet assembly 62 is installed at the liquid outlet to control the distilled water to flow out of the liquid outlet or to close the liquid outlet. A mounting seat 42 is formed on the cover plate 4. The mounting seat 42 is configured as a hollow tubular structure and is connected to the flow channel 41. The distilled water flowing out of the liquid outlet through the liquid outlet assembly 62 enters the mounting seat 42 and then enters the flow channel 41 to achieve liquid addition.

[0057] Furthermore, a sealing ring 611 extending inward is provided at the liquid outlet of the liquid storage bottle 61, and the above-mentioned liquid outlet component 62 includes a plug body 621 which is slidably inserted into the sealing ring 611 and extends to the inside of the liquid storage bottle 61, and the other end of the plug body 621 is located on the outside of the liquid storage bottle 61; the liquid outlet component 62 also includes a lower end plate 622 fixed to the end of the plug body 621 away from the liquid storage bottle 61, and an elastic member 623 arranged between the plug body 621 and the liquid storage bottle 61.

[0058] Specifically, the plug body 621 is a hollow tubular structure, one end of which extends into the liquid storage bottle 61 and is closed, and the other end is open. A capillary pore 6211 is provided on the outer peripheral surface of the portion of the plug body 621 extending into the liquid storage bottle 61. The capillary pore 6211 connects the inside and outside of the plug body 621. When the elastic member 623 is in a naturally extended state, the sealing ring 611 closes the capillary pore 6211, and distilled water cannot enter the plug body 621 at this time; when the user presses the liquid storage bottle 61 to cause the plug body 621 and the liquid storage bottle 61 to be relatively displaced, the capillary pore 6211 and the sealing ring 611 are staggered, and the distilled water in the liquid storage bottle 61 enters the plug body 621 through the capillary pore 6211, and then flows out from the lower port of the plug body 621.

[0059] It should be noted that the specific structure of the elastic member 623 arranged between the liquid storage bottle 61 and the plug body 621 is: the elastic member 623 is a linear spring, and the linear spring is sleeved on the outside of the plug body 621. By setting the lower end plate 622 to have an outer diameter larger than the outer diameter of the plug body 621, the lower end plate 622 can provide a supporting position for the linear spring, and one end of the linear spring abuts against the outer surface of the liquid storage bottle 61, and the other end abuts against the lower end plate 622.

[0060] Reference Figure 2 The mounting seat 42 arranged on the cover plate 4 is a threaded mounting seat 42, and an internal thread is formed on the inner wall of the end of the plug body 621 away from the liquid storage bottle 61. The plug body 621 is screwed onto the mounting seat 42 through the internal thread. At this time, the plug body 621 and the cover plate 4 remain relatively still, and the internal spaces of the two are interconnected. At this time, when the liquid storage bottle 61 is pressed, since the plug body 621 remains still, the capillary pore 6211 and the sealing ring 611 are staggered, so that distilled water can enter the internal space of the plug body 621 through the capillary pore 6211, and then the distilled water continues to flow downward, enters the flow channel 41 through the internal space of the mounting seat 42, flows along the flow channel 41 and drips onto the liquid adding hole 5 through the drip hole 43 to complete the liquid adding.

[0061] In addition, a ring 6221 is provided on the side of the lower end plate 622 facing the liquid storage bottle 61, the elastic member 623 is arranged in the space surrounded by the ring 6221, and a sleeve 7 is clamped on the outer side of the ring 6221. The sleeve 7 is used to fix the relative positions of the liquid storage bottle 61 and the plug body 621 to prevent the liquid storage bottle 61 from shaking due to the influence of the external environment during the normal operation of the battery, so as to avoid the distilled water in the liquid storage bottle 61 from leaking through the capillary 6211.

[0062] To facilitate the disassembly and assembly of the ferrule 7, the ferrule 7 can be set as a rubber material support and a notch can be opened on one side thereof. When a horizontal external force is applied to the ferrule 7, the side of the ferrule 7 with the notch applies pressure to the ring 6221. Since the ring 6221 remains fixed with the plug body 621, the ferrule 7 itself is deformed to expand the notch so that the ferrule 7 can be removed. The same is true during installation, which will not be elaborated here.

[0063] Reference Figure 3 Specifically, the cover plate 4 includes a main body 45 and a side plate 46. The main body 45 is clamped in the mounting groove and covers the liquid filling hole 5. The side plate 46 is arranged at at least one end of the main body 45. Preferably, two side plates 46 are provided, which are respectively arranged at the two ends of the main body 45 and the plane where the side plates 46 are located is perpendicular to the main body 45, that is, the side plates 46 are parallel to the side of the shell 1. A movable plate 21 is installed on the side of the bottom plate 2 facing the shell 1. There are four movable plates 21. The four movable plates 21 are distributed on both sides of the shell 1 in pairs. The two movable plates 21 on the same side are in the same plane with one of the side plates 46. With this plane as a reference surface, the two movable plates 21 are symmetrically distributed along the center line of the side plate 46.

[0064] A connection assembly 8 is provided between the movable plate 21 and the side plate 46, and the connection assembly 8 includes a first rigid connection part 81, a second rigid connection part 82 and an elastic connection part 83, wherein the first rigid connection part 81 is mounted on the side plate 46 and extends to the movable plate 21, the second rigid connection part 82 is mounted on the movable plate 21 and extends to the side plate 46, and one end of the elastic connection part 83 is connected to the first rigid connection part 81, and the other end is connected to the second rigid connection part 82. When the movable plate 21 and the side plate 46 are connected by the connection assembly 8, the elastic connection part 83 is in a deformed state, and it applies a reaction force to the first rigid connection part 81 and the second rigid connection part 82 at the same time, the first rigid connection part 81 transmits the reaction force to the end cover 3 through the cover plate 4, and the second rigid connection part 82 transmits the reaction force to the shell 1 through the bottom plate 2, so that the connection between the cover plate 4, the end cover 3, the shell 1 and the bottom is more stable and tight.

[0065] Reference Figure 4When two side panels 46 are provided and four movable panels 21 are provided, two groups of connecting components 8 are provided accordingly. Each group of connecting components 8 connects two movable panels 21 and one side panel 46 located on the same side. The specific connection structure is as follows:

[0066] The first rigid connection part 81 installed on the side plate 46 is an inverted U-shaped structure, and an axial hole is opened on the side plate 46. The horizontal part of the inverted U-shaped first rigid connection part 81 can be rotatably inserted into the axial hole, and the two ends of the horizontal part extend to the two sides of the first rigid connection part 81. The vertical part is integrally formed at the two ends of the horizontal part and extends downward; the second rigid connection part 82 installed on the movable plate 21 is an L-shaped structure, and an axial hole is also opened on the two movable plates 21. The horizontal part of the L-shaped second rigid connection part 82 is inserted into the axial hole, and the vertical part is integrally formed at one end of the horizontal part facing the other movable plate 21 and extends upward, so that the vertical part of the first rigid connection part 81 and the vertical part of the second rigid connection part 82 are in the same straight line, and the elastic connection part is fixed to the first rigid connection part 81 at one end after being stretched, and the other end is fixed to the second rigid connection part 82.

[0067] For easy disassembly and assembly, the second rigid connection part 82 is configured to be separable from the movable plate 21. Specifically, the two ends of the elastic connection piece are rotatably connected to the first rigid connection part 81 and the second rigid connection part 82, respectively, so that the horizontal part of the second rigid connection part 82 can move along the extension direction of the shaft hole and can be removed from the shaft hole to achieve separation; when installing, the horizontal part of the second rigid connection part 82 can be inserted into the shaft hole.

[0068] The implementation principle of a battery box assembly in an embodiment of the present application is as follows: when the battery is working, the sleeve 7 is clamped between the liquid storage bottle 61 and the plug body 621 to keep the two relatively still. When distilled water needs to be added to the battery box, the sleeve 7 is removed, and the liquid storage bottle 61 is pressed to make the capillary pores 6211 of the plug body 621 staggered with the sealing ring 611. At this time, the distilled water in the liquid storage bottle 61 enters the internal space of the plug body 621 through the capillary pores 6211, and further flows downward, enters the flow channel 41 through the internal space of the mounting seat 42, and as the distilled water continues to flow, it is discharged when passing through the drip hole 43, drips downward onto the liquid filling hole 5, and flows into the battery box through the liquid filling hole 5 to complete the liquid filling. After the liquid filling is completed, the sleeve 7 can be installed.

[0069] In addition, the present application also discloses a processing technology for the above-mentioned battery box assembly, comprising the following steps:

[0070] S1. Pre-drying the raw materials for production to remove moisture and impurities;

[0071] S2. Add the raw materials into the injection molding machine, heat them, and then inject them into the mold to obtain the components;

[0072] S3. The formed bottom plate 2 is heat-sealed to the bottom of the housing 1;

[0073] S4. The formed end cap 3 is fixed to the top of the housing 1 by adhesive bonding;

[0074] S5. The main body 45 of the cover plate 4 is mounted in the mounting groove, and the side plate 46 is connected to the movable plate 21 by the connecting assembly 8;

[0075] S6. Install the liquid adding unit 6 on the cover plate 4.

[0076] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A battery box assembly, characterized in that: include: A housing (1) having an upward opening, and a storage battery assembly is installed in the housing (1) through the opening; A bottom plate (2) mounted on the bottom of the housing (1); An end cover (3) is covered on the open end of the housing (1), and a liquid adding hole (5) is provided on the end cover (3); A cover plate (4) is detachably mounted on the end cover (3) and is capable of completely covering the liquid adding hole (5); The liquid adding unit (6) is detachably mounted on the cover plate (4), a flow channel (41) is provided in the cover plate (4), and the liquid adding unit (6) replenishes liquid into the housing (1) through the flow channel (41) and the liquid adding hole (5).

2. A battery box assembly according to claim 1, characterized in that: The liquid adding unit (6) comprises: A liquid storage bottle (61) containing liquid inside and having a liquid outlet on its surface communicating with the inside thereof; A liquid outlet assembly (62) is installed at the liquid outlet and is used to control the liquid to flow out of the liquid outlet or to close the liquid outlet; A mounting seat (42) is formed on the cover plate (4); the mounting seat (42) is a hollow tubular structure and one end of the mounting seat is connected to the flow channel (41); the liquid adding unit (6) is fixed to the cover plate (4) via the mounting seat (42).

3. A battery box assembly according to claim 2, characterized in that: The liquid outlet is provided with a sealing ring (611) extending toward the interior of the liquid storage bottle (61), and the liquid outlet assembly (62) comprises: A plug body (621) is slidably arranged inside the sealing ring (611); the plug body (621) is hollow and has capillary holes (6211) on its surface; the capillary holes (6211) communicate with the outside and the inside of the plug body (621); A lower end plate (622) is annularly fixed to an end of the plug body (621) away from the liquid storage bottle (61); An elastic member (623) is sleeved on the outside of the plug body (621) and has one end abutting against the liquid storage bottle (61) and the other end abutting against the lower end plate (622); The capillary holes (6211) are formed on the outer peripheral surface of the portion of the plug body (621) extending into the liquid storage bottle (61).

4. A battery box assembly according to claim 3, characterized in that: A collar (6221) is provided on one side of the lower end plate (622) facing the liquid storage bottle (61), and the elastic member (623) is arranged in a space surrounded by the collar (6221). A sleeve (7) is clamped on the outer side of the collar (6221), and a notch is formed on one side of the sleeve (7). Through the notch, the sleeve (7) can be clamped between the liquid storage bottle (61) and the plug body (621), or the sleeve (7) can be removed from between the liquid storage bottle (61) and the plug body (621).

5. A battery box assembly according to claim 2, characterized in that: An internal thread is formed on the inner wall of the plug body (621) at one end away from the liquid storage bottle (61); the mounting seat (42) is a threaded mounting seat (42); the plug body (621) is screwed onto the threaded mounting seat (42) via the internal thread, so as to connect the plug body (621), the mounting seat (42) and the flow channel (41).

6. A battery box assembly according to claim 1, characterized in that: A drip hole (43) communicating with the flow channel (41) is provided on one side of the cover plate (4) facing the end cover (3); the drip hole (43) is correspondingly arranged above the liquid adding hole (5); the surface of the cover plate (4) is recessed to form a drip groove (44); and the drip hole (43) is formed in the drip groove (44).

7. A battery box assembly according to claim 1, characterized in that: The end cover (3) is formed with an embedding groove, the liquid adding holes (5) are distributed in the embedding groove, and the cover plate (4) comprises: The main body (45) is clamped in the embedding groove and covers the liquid filling hole (5); A side plate (46) is arranged on at least one end of the main body (45). A movable plate (21) is installed on the side of the bottom plate (2) facing the shell (1), and a connecting component (8) is provided between the movable plate (21) and the side plate (46).

8. A battery box assembly according to claim 7, characterized in that: The connecting component (8) comprises: A first rigid connection portion (81), wherein an end of the side plate (46) away from the main body portion (45) is formed with an axial hole, and the first rigid connection portion (81) is inserted into the axial hole and extends toward the movable plate (21); A second rigid connection part (82), wherein an axial hole is provided on the movable plate (21), and the second rigid connection part (82) can be movably inserted into the axial hole and extends toward the side plate (46); An elastic connection part (83) has one end connected to the first rigid connection part (81) and the other end connected to the second rigid connection part (82), and the elastic connection part (83) can be extended and retracted in a vertical direction.

9. A battery box assembly according to claim 8, characterized in that: The two ends of the elastic connection part (83) are rotatably connected to the first rigid connection part (81) and the second rigid connection part (82) respectively, so that the second rigid connection part (82) can move in the lateral direction.

10. A processing technology for a battery box assembly, used for manufacturing the battery box assembly as claimed in any one of claims 7 to 9, comprising the following steps: S1. Pre-drying the raw materials for production to remove moisture and impurities; S2. Add the raw materials into the injection molding machine, heat them, and then inject them into the mold to obtain the components; S3. The formed bottom plate (2) is heat-sealed to the bottom of the housing (1); S4. The formed end cap (3) is fixed to the top of the housing (1) by adhesive bonding; S5. The main body (45) of the cover plate (4) is clamped in the mounting groove, and the side plate (46) is connected to the movable plate (21) through the connecting assembly (8); S6. Install the liquid adding unit (6) on the cover plate (4).

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