CN218498329U

CN218498329U - Battery liquid injection device

Info

Publication number: CN218498329U
Application number: CN202222329259.3U
Authority: CN
Inventors: 宋东亮; 胡金; 张春建; 曾建伟
Original assignee: Shenzhen Lianpeng Intelligent Equipment Technology Co ltd
Current assignee: Shenzhen Lianpeng Intelligent Equipment Technology Co ltd
Priority date: 2022-09-01
Filing date: 2022-09-01
Publication date: 2023-02-17
Anticipated expiration: 2032-09-01

Abstract

The utility model relates to a battery priming device. The battery liquid filling device comprises: a support; the rotating assembly is arranged on the bracket; the battery positioning assembly is arranged on the rotating assembly, the rotating assembly drives the battery positioning assembly to rotate around a first axis, and the battery positioning assembly is used for fixing a battery; the liquid injector is provided with a first end and a second end which are arranged oppositely, the first end of the liquid injector is communicated with the battery, the liquid injector can rotate along with the battery, and the liquid injector is positioned on one side of the battery close to the first axis. By adopting the technical scheme, the electrolyte in the electrolyte injector is injected into the battery by the centrifugal force, and the electrolyte in the electrolyte injection hole of the battery can flow into the battery by the centrifugal force, so that when the electrolyte is injected into the battery, the electrolyte cannot be remained in the electrolyte injection hole of the battery, the electrolyte injection hole of the battery does not need to be wiped, the electrolyte injection efficiency of the battery is improved, and the waste of the electrolyte is prevented.

Description

Battery liquid injection device

Technical Field

The utility model relates to a battery filling technical field especially relates to battery filling device.

Background

In the prior art, in a battery electrolyte injection device, electrolyte in the battery electrolyte injection device is generally injected into a battery through air pressure difference, and the speed of the battery for absorbing the electrolyte is low, so that the electrolyte is easy to accumulate in an electrolyte injection hole of the battery, and further the electrolyte is left in the electrolyte injection hole of the battery. And electrolyte influences the sealed of notes liquid hole after annotating the downthehole crystallization of liquid, consequently needs to use electrolyte wiping arrangement to clear up the notes liquid hole of battery, has reduced the production efficiency of battery, and wastes electrolyte.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide a battery electrolyte injection device for solving the problem that electrolyte is likely to remain in a battery electrolyte injection hole in the process of injecting electrolyte into a battery.

A battery liquid filling device. The battery liquid filling device comprises: a support; the rotating assembly is arranged on the bracket; the battery positioning assembly is arranged on the rotating assembly, the rotating assembly drives the battery positioning assembly to rotate around a first axis, and the battery positioning assembly is used for fixing a battery; the liquid injector is communicated with the battery and can rotate along with the battery, and the liquid injector is positioned on one side, close to the first axis, of the battery.

In one embodiment, the battery liquid injection device further comprises a liquid injection tank, the liquid injection tank is arranged on the bracket and provided with a first end and a second end which are arranged oppositely, the first end of the liquid injection device is communicated with the battery, and the liquid injection tank is communicated with the second end of the liquid injection device.

In one embodiment, the liquid injection tank is provided with a liquid inlet and a gas circulation port, the liquid inlet is provided with a liquid inlet valve, the liquid inlet is connected with the liquid supplementing device, the gas circulation port is provided with a control valve, the gas circulation port is connected with a vacuum pump, and the gas circulation port is connected with the inflating device.

In one embodiment, the battery liquid injection device further comprises a connecting assembly, the connecting assembly comprises a connecting portion and a rotating portion, the rotating portion is rotatably connected to the connecting portion, the connecting portion is fixedly connected to the support, a first channel is arranged in the connecting portion, a second channel is arranged in the rotating portion, the first channel is communicated with the second channel, the first channel is communicated with the liquid injection tank, the second channel is communicated with the second end of the liquid injector, and the rotating portion rotates along with the second end of the liquid injector.

In one embodiment, the battery positioning assembly and the liquid injector are provided with a plurality of batteries, the plurality of battery positioning assemblies are arranged around the first axial line in an annular array, the plurality of liquid injectors are arranged around the first axial line in an annular array, the battery positioning assemblies are arranged in one-to-one correspondence with the batteries, and the batteries are arranged in one-to-one correspondence with the liquid injectors; the liquid injection tank is provided with a plurality of first channels, the connecting part is internally provided with a plurality of second channels, the first channels are arranged in a one-to-one correspondence manner with the second channels, the liquid injection tank is arranged in a one-to-one correspondence manner with the first channels, and the liquid injection device is arranged in a one-to-one correspondence manner with the second channels.

In one embodiment, a battery positioning assembly includes: the supporting part is fixedly connected to the rotating assembly; a battery positioning part, one side of which is rotatably connected to the supporting part, and the battery is arranged on the battery positioning part; the battery positioning part is provided with a first position and a second position relative to the supporting part, when the rotating assembly is static, the battery positioning part is positioned at the first position, and when the rotating assembly rotates, the battery positioning part is positioned at the second position; when the battery positioning portion is at the second position, the axis of the liquid injection hole of the battery is in the horizontal direction, and when the battery positioning portion is at the first position, the liquid injection hole of the battery faces upward.

In one embodiment, the battery positioning portion rotates relative to the support portion about a second axis perpendicular to the first axis, and the second axis is perpendicular to the direction of centrifugal force of the rotating assembly.

In one embodiment, the battery positioning part further includes a buffer part disposed between the support part and the battery positioning part.

In one embodiment, the battery positioning portion includes: the positioning box is provided with an accommodating cavity and an opening, the opening is communicated with the accommodating cavity, the battery is arranged in the accommodating cavity, and the inner wall of the accommodating cavity is attached to the battery; the lid, the lid is used for the shutoff opening, and the lid is laminated with the battery mutually, is provided with the through-hole on the lid, is provided with the connecting piece in the through-hole, and the one end and the battery intercommunication of connecting piece, the other end of connecting piece and the first end intercommunication of notes liquid ware.

In one embodiment, the rotating assembly comprises: the battery positioning assembly is arranged on the turntable, and a central shaft of the turntable is a first axis; the driving piece is in driving connection with the turntable.

Above-mentioned battery priming device, runner assembly set up on the support, and battery locating component sets up on runner assembly, and the connection can be dismantled on battery locating component to the battery, and runner assembly drives battery locating component and annotates the liquid ware and rotates around the primary axis, annotates the one side that is close to the primary axis that the liquid ware is located the battery, annotates liquid ware and battery intercommunication, has electrolyte in the liquid ware. Adopt above-mentioned technical scheme, the runner assembly can drive battery locating component and rotate, thereby drive the battery and annotate the liquid ware and rotate, annotate liquid ware and battery pivoted in-process, centrifugal force makes the electrolyte in the notes liquid ware inject the battery fast in, and centrifugal force can make the downthehole electrolyte of battery notes liquid flow to the battery inside, when pouring into electrolyte into the battery like this, the speed of battery absorption electrolyte has been accelerated, the downthehole electrolyte that can not remain of battery notes liquid, need not to clean the battery and annotate the liquid hole, thereby the battery notes liquid efficiency has been improved, and the waste of electrolyte has been prevented. In addition, above-mentioned battery priming device pours into the electrolyte in the notes liquid ware into the battery through centrifugal force, and easy operation is quick to the production efficiency of battery has been improved. The battery liquid injection device also has the advantages of simple structure, low manufacturing cost and the like.

Drawings

Fig. 1 is a schematic structural diagram of a battery liquid injection device according to an embodiment at a first viewing angle;

fig. 2 is a schematic structural diagram of a battery liquid injection device according to a second viewing angle;

fig. 3 is a schematic structural diagram of a battery positioning assembly according to an embodiment.

Wherein the following reference numerals are included in the above figures:

10. a support;

20. injecting a liquid tank; 21. a liquid inlet valve; 22. a control valve;

30. a rotating assembly; 31. a turntable; 32. a drive member;

40. a battery positioning assembly; 41. a support portion; 42. a battery positioning portion; 421. a positioning box; 422. a cover body; 4221. a connecting member; 43. a rotating shaft; 44. a buffer section;

50. a liquid injector; 51. a first end of a syringe; 52. a second end of the injector;

60. a connection assembly; 61. a connecting portion; 62. a rotating part.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless explicitly defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

In the present application, unless expressly stated or limited otherwise, a first feature "on" or "under" a second feature may be directly contacting the second feature or the first and second features may be indirectly contacting the second feature through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature "under," "beneath," and "under" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. As used herein, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are for purposes of illustration only and do not denote a single embodiment.

Referring to fig. 1 and 2, an embodiment of the present invention provides a battery filling device, which includes a bracket 10, a rotating assembly 30, a battery positioning assembly 40, and a filling device 50. The rotating assembly 30 is arranged on the bracket 10; the battery positioning assembly 40 is arranged on the rotating assembly 30, the rotating assembly 30 drives the battery positioning assembly 40 to rotate around a first axis, and the battery positioning assembly 40 is used for fixing a battery; the syringe 50 is in communication with the battery, the syringe 50 being rotatable with the battery, the syringe 50 being located on a side of the battery adjacent the first axis. Electrolyte is arranged in the liquid injector 50, the liquid injector 50 is injected into the battery along with the rotation of the rotating component 30 under the action of centrifugal force, and the electrolyte can be completely injected into the battery under the action of centrifugal force, so that the electrolyte in the liquid injector 50 is prevented from remaining in the liquid injection hole of the battery. The syringe 50 may be of tubular construction with the end of the syringe 50 remote from the battery being higher than the end of the syringe 50 adjacent to the battery to facilitate the injection of electrolyte from the syringe 50 into the battery. In actual operation, the battery is detached after the battery is filled, the battery to be filled is mounted on the battery positioning assembly 40, a certain amount of electrolyte can be supplemented into the liquid filling device 50 in the process that the rotating assembly 30 drives the battery to rotate, and the certain amount of electrolyte in the liquid filling device 50 is filled into the battery through centrifugal force.

Above-mentioned battery priming device, rotating assembly 30 set up on support 10, and battery locating component 40 sets up on rotating assembly 30, and the connection can be dismantled on battery locating component 40 to the battery, and rotating assembly 30 drives battery locating component 40 and annotates liquid ware 50 and rotates around the primary axis, annotates one side that liquid ware 50 is located being close to the primary axis of battery, annotates liquid ware 50 and battery intercommunication, annotates and has electrolyte in the liquid ware 50. Adopt above-mentioned technical scheme, rotating assembly 30 can drive battery locating component 40 and rotate, thereby drive the battery and annotate liquid ware 50 and rotate, annotate liquid ware 50 and battery pivoted in-process, centrifugal force makes the electrolyte in annotating liquid ware 50 inject the battery fast in, and centrifugal force can make the downthehole electrolyte of battery notes liquid flow to inside the battery, when pouring into electrolyte into the battery like this, accelerated the speed that the battery absorbed electrolyte, the downthehole electrolyte that can not remain of battery notes liquid, need not to clean the battery and annotate the liquid hole, thereby improved battery notes liquid efficiency, and prevented the waste of electrolyte. In addition, according to the technical scheme, the electrolyte in the electrolyte injector 50 is injected into the battery through centrifugal force, the operation is simple and quick, and therefore the production efficiency of the battery is improved.

Referring to fig. 1 and 2, in one embodiment, the rotating assembly 30 includes a rotating disc 31 and a driving member 32. The rotary disc 31 is rotationally connected to the bracket 10, the battery positioning assembly 40 is arranged on the rotary disc 31, and the central shaft of the rotary disc 31 is a first axis; the driving member 32 is in driving connection with the turntable 31 to drive the turntable 31 to rotate. The driving member 32 drives the turntable 31 to rotate, thereby driving the battery positioning assembly 40 to rotate around the central axis of the turntable 31. The turntable 31 can better support the battery positioning assembly 40, so that the motion stability of the battery positioning assembly 40 can be improved.

Referring to fig. 1 and 2, in one embodiment, the battery filling device further includes a filling tank 20, the filling tank 20 is disposed on the bracket 10, the filling device 50 has a first end and a second end disposed opposite to each other, the first end 51 of the filling device is communicated with the battery, and the filling tank 20 is communicated with the second end 52 of the filling device. Specifically, the injection tank 20 may be higher than the injector 50 so that the electrolyte in the injection tank 20 smoothly flows into the injector 50. The electrolyte is contained in the electrolyte injection tank 20, and the electrolyte in the electrolyte injection tank 20 flows into the electrolyte injector 50 through the second end 52 of the electrolyte injector to replenish the electrolyte into the electrolyte injector 50. Generally, the amount of electrolyte injected into the battery is large, and the filler 50 cannot contain all of the electrolyte, and the electrolyte injection tank 20 is provided to continuously replenish the electrolyte into the filler 50.

Referring to fig. 1 and fig. 2, in one embodiment, a liquid inlet is provided on the liquid injection tank 20, a liquid inlet valve 21 is provided at the liquid inlet, and the liquid inlet is connected with the liquid replenishing device. In actual operation, before the battery is filled with electrolyte, the electrolyte supplementing device injects a fixed amount of electrolyte into the electrolyte injection tank 20, and the electrolyte in the electrolyte injection tank 20 is completely injected into the battery through the electrolyte injector 50, so that the fixed amount of electrolyte is injected into the battery. The liquid injection tank 20 is provided with a gas circulation port, the gas circulation port is provided with a control valve 22, and the gas circulation port is connected with a vacuum pump. So set up, the vacuum pump can take out the air in annotating liquid jar 20, can accelerate the fluid infusion equipment like this to annotate the fluid infusion speed in liquid jar 20 to can improve battery production efficiency. The gas flow opening is connected with the aeration equipment, and the aeration equipment can be aerifyd in annotating liquid jar 20 like this, and the electrolyte flow direction that atmospheric pressure difference made in annotating the liquid jar 20 annotates liquid ware 50 and battery, so sets up, annotates liquid to the battery simultaneously through atmospheric pressure difference and centrifugal force, can make like this annotate the quantitative electrolyte in the liquid jar 20 and annotate in the battery to the great degree to improve the production precision of battery, in addition, still can improve the production efficiency of battery.

Referring to FIG. 2, in one embodiment, the battery priming device further includes a connection assembly 60, the connection assembly 60 being configured to connect the priming applicator 50 to the priming canister 20. Coupling assembling 60 includes connecting portion 61 and rotation portion 62, and rotation portion 62 rotates to be connected on connecting portion 61, and connecting portion 61 fixed connection has first passageway in the connecting portion 61 on support 10, has the second passageway in the rotation portion 62, first passageway and second passageway intercommunication, first passageway and notes liquid jar 20 intercommunication, the second passageway communicates with the second end 52 of annotating the liquid ware, and rotation portion 62 rotates along with the second end 52 of annotating the liquid ware. By adopting the above technical scheme, the rotating part 62 rotates along with the second end 52 of the injector, so that the rotating component 30 drives the battery to rotate, the battery drives the injector 50 to rotate, and the injector 50 drives the rotating part 62 to rotate, that is, the battery and the injector 50 can completely rotate along with the rotating component 30, thereby the electrolyte in the injector 50 can be injected into the battery to a greater extent under the action of centrifugal force.

In other embodiments, the connection assembly 60 is not required to be provided, and both the liquid injection tank 20 and the liquid injector 50 can rotate along with the rotating assembly 30, specifically, the liquid injection tank 20 is fixed on the rotating assembly 30, so that the liquid injection tank 20 does not prevent the second end 52 of the liquid injector from rotating, the liquid injector 50 can be completely rotated, and the electrolyte in the liquid injector 50 can be injected into the battery to a greater extent under the action of centrifugal force. Centrifugal force causes the electrolyte in the electrolyte tank 20 and the electrolyte injector 50 to flow into the battery.

Referring to FIGS. 1 and 2, in one embodiment, the battery positioning assembly 40 and the injector 50 are provided in plurality, the plurality of battery positioning assemblies 40 are arranged in an annular array about a first axis, the plurality of injectors 50 are arranged in an annular array about the first axis, the battery positioning assemblies 40 are arranged in a one-to-one correspondence with the batteries, and the batteries are arranged in a one-to-one correspondence with the injectors 50. Thus, when the rotating assembly 30 rotates, the electrolyte can be injected into the plurality of cells at the same time, thereby improving the processing efficiency of the cells. Annotate liquid jar 20 and have a plurality ofly, have a plurality of first passageways in the connecting portion 61, have a plurality of second passageways in the rotation part 62, first passageway and second passageway one-to-one set up, annotate liquid jar 20 and first passageway one-to-one setting, annotate liquid ware 50 and second passageway one-to-one setting. Alternatively, the connection assembly 60 may be a multi-way swivel. With the above structure, the liquid injection tanks 20 and the liquid injectors 50 are arranged in one-to-one correspondence, so that a fixed amount of electrolyte in each liquid injection tank 20 can be injected into one battery through the liquid injectors 50, and the manufacturing accuracy of the battery can be improved.

Referring to fig. 1 and 3, in one embodiment, the battery positioning assembly 40 includes a supporting portion 41 and a battery positioning portion 42. The support 41 is fixedly connected to the rotating assembly 30, and the support 41 is fixed to the turntable 31. One side of the battery positioning portion 42 is rotatably coupled to the support portion 41, and the battery is detachably coupled to the battery positioning portion 42. The battery positioning portion 42 has a first position and a second position relative to the support portion 41, the first position being the battery positioning portion 42 when the rotating assembly 30 is stationary, and the first position being the battery positioning portion 42 under the action of gravity when the rotating assembly 30 is rotated and the second position being the battery positioning portion 42 when the rotating assembly 30 is stationary. When the rotating assembly 30 rotates, the other side of the battery positioning portion 42 rotates upward around the support portion 41 by the centrifugal force, so that the battery positioning portion 42 is switched from the first position to the second position. When the rotating assembly 30 rotates and the battery positioning part 42 is at the second position, the axis of the electrolyte filling hole of the battery is in the horizontal direction, so that the electrolyte in the electrolyte filling device 50 can smoothly enter the battery from the electrolyte filling hole under the action of centrifugal force. When the battery positioning portion 42 is in the first position, the liquid inlet of the battery faces upward, so that the electrolyte inside the battery does not leak when the battery is removed from the battery positioning portion 42.

Referring to fig. 3, in one embodiment, the battery positioning portion 42 rotates around a second axis relative to the supporting portion 41, the second axis is perpendicular to the first axis, and the second axis is perpendicular to the centrifugal force direction of the rotating assembly 30. With this arrangement, when the rotating assembly 30 rotates and the battery positioning portion 42 is subjected to centrifugal force, the other side of the battery positioning portion 42 can rotate around the second axis to a large extent, so that the battery positioning portion 42 can be held at the second position in a stable manner, and the axis of the liquid inlet of the battery can be made to be horizontal. Alternatively, the battery positioning portion 42 is rotatably coupled to the support portion 41 by a rotating shaft 43.

Referring to fig. 1, in one embodiment, the battery positioning portion 42 further includes a buffering portion 44, and the buffering portion 44 is disposed between the supporting portion 41 and the battery positioning portion 42. When the battery positioning portion 42 is switched from the second position to the first position, the buffering portion 44 is used for buffering the battery positioning portion 42, so as to prevent the battery positioning portion 42 from shaking to a large extent, which may result in leakage of the electrolyte inside the battery.

Referring to fig. 3, in one embodiment, the battery positioning portion 42 includes a positioning box 421 and a cover 422. The positioning box 421 has an accommodating cavity and an opening, the opening is communicated with the accommodating cavity, the battery is arranged in the accommodating cavity, and the inner wall of the accommodating cavity is attached to the battery; the cover 422 is used for sealing the opening, and the cover 422 is attached to the battery. With this arrangement, the battery can be locked in the positioning box 421, and when the positioning box 421 is sealed by the cover 422, the battery can be stably fixed in the positioning box 421. The cover 422 is provided with a through hole, a connecting piece 4221 is arranged in the through hole, one end of the connecting piece 4221 is communicated with the battery, and the other end of the connecting piece 4221 is communicated with the first end 51 of the liquid injector. Thus, when the cover 422 blocks the positioning box 421, the battery is communicated with the connecting piece 4221, i.e. the first end 51 of the liquid injector is communicated with the battery, and the connection of the battery and the first end 51 of the liquid injector is facilitated. Above-mentioned structure, the installation of battery and dismantlement are simple and convenient, have improved battery machining efficiency.

All possible combinations of the technical features in the above embodiments may not be described for the sake of brevity, but should be considered as being within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features.

The above examples only represent some embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A battery liquid filling device, characterized in that, the battery liquid filling device includes:

a support (10);

a rotating assembly (30) arranged on the bracket (10);

the battery positioning assembly (40) is arranged on the rotating assembly (30), the rotating assembly (30) drives the battery positioning assembly (40) to rotate around a first axis, and the battery positioning assembly (40) is used for fixing a battery;

the liquid injector (50) is communicated with the battery, the liquid injector (50) can rotate along with the battery, and the liquid injector (50) is located on one side, close to the first axis, of the battery.

2. The battery priming device of claim 1, further comprising a priming tank (20), wherein the priming tank (20) is disposed on the holder (10), wherein the priming device (50) has a first end and a second end disposed opposite to each other, wherein the first end (51) of the priming device is in communication with the battery, and wherein the priming tank (20) is in communication with the second end (52) of the priming device.

3. The battery liquid injection device according to claim 2, wherein a liquid inlet and a gas flow port are arranged on the liquid injection tank (20), a liquid inlet valve (21) is arranged at the liquid inlet, the liquid inlet is connected with a liquid supplementing device, a control valve (22) is arranged at the gas flow port, the gas flow port is connected with a vacuum pump, and the gas flow port is connected with an inflating device.

4. The battery electrolyte injection device according to claim 2, further comprising a connection assembly (60), wherein the connection assembly (60) comprises a connection portion (61) and a rotation portion (62), the rotation portion (62) is rotatably connected to the connection portion (61), the connection portion (61) is fixedly connected to the support (10), a first passage is provided in the connection portion (61), a second passage is provided in the rotation portion (62), the first passage is communicated with the second passage, the first passage is communicated with the electrolyte injection tank (20), the second passage is communicated with the second end (52) of the electrolyte injector, and the rotation portion (62) rotates along with the second end (52) of the electrolyte injector.

5. The battery filling device according to claim 4,

the battery positioning components (40) and the liquid injector (50) are provided with a plurality of batteries, the battery positioning components (40) are arranged around the first axial line in an annular array, the liquid injectors (50) are arranged around the first axial line in an annular array, the battery positioning components (40) and the batteries are arranged in a one-to-one correspondence mode, and the batteries and the liquid injector (50) are arranged in a one-to-one correspondence mode;

the liquid injection tank (20) is provided with a plurality of liquid injection tanks, a plurality of first channels are arranged in the connecting part (61), a plurality of second channels are arranged in the rotating part (62), the first channels and the second channels are arranged in a one-to-one correspondence mode, the liquid injection tanks (20) and the first channels are arranged in a one-to-one correspondence mode, and the liquid injection devices (50) and the second channels are arranged in a one-to-one correspondence mode.

6. The battery filling device according to claim 1, wherein the battery positioning assembly (40) comprises:

a support part (41) fixedly connected to the rotating assembly (30);

a battery positioning portion (42), one side of the battery positioning portion (42) being rotatably connected to the support portion (41), the battery being disposed on the battery positioning portion (42); the battery positioning part (42) has a first position and a second position relative to the support part (41), the battery positioning part (42) is at the first position when the rotating assembly (30) is static, and the battery positioning part (42) is at the second position when the rotating assembly (30) rotates; when the battery positioning part (42) is at the second position, the axis of the liquid injection hole of the battery is along the horizontal direction, and when the battery positioning part (42) is at the first position, the liquid injection hole of the battery faces upwards.

7. The battery electrolyte injection apparatus according to claim 6, wherein the battery positioning portion (42) rotates relative to the support portion (41) about a second axis that is perpendicular to the first axis, and the second axis is perpendicular to a centrifugal force direction of the rotating assembly (30).

8. The battery liquid injection device according to claim 6, wherein the battery positioning portion (42) further includes a buffer portion (44), and the buffer portion (44) is provided between the support portion (41) and the battery positioning portion (42).

9. The battery electrolyte injection apparatus according to claim 6, wherein the battery positioning portion (42) includes:

the positioning box (421) is provided with an accommodating cavity and an opening, the opening is communicated with the accommodating cavity, the battery is arranged in the accommodating cavity, and the inner wall of the accommodating cavity is attached to the battery;

the cover body (422), the cover body (422) is used for plugging the opening, the cover body (422) is attached to the battery, a through hole is formed in the cover body (422), a connecting piece (4221) is arranged in the through hole, one end of the connecting piece (4221) is communicated with the liquid injection hole of the battery, and the other end of the connecting piece (4221) is communicated with the first end (51) of the liquid injector.

10. The battery filling device according to claim 1, wherein the rotating assembly (30) comprises:

the rotary table (31) is rotatably connected to the support (10), the battery positioning assembly (40) is arranged on the rotary table (31), and the central shaft of the rotary table (31) is the first axis;

the driving part (32), the driving part (32) is in driving connection with the turntable (31).