An ink cartridge, a replacement chip for an ink cartridge, and an ink filling device

Abstract

The present application relates to printer consumables technical field, disclose a kind of ink cartridge, ink cartridge replacement chip and ink filling device.The ink cartridge includes ink cartridge body assembly and replacement chip, ink cartridge body assembly includes cartridge body and fixed chip, cartridge body is provided with the containing cavity for containing ink, fixed chip is connected on cartridge body;Replacement chip can at least store the remaining information of the ink in the containing cavity, and replacement chip is detachably connected with ink cartridge body assembly.The ink cartridge of the present application is convenient to realize reuse after the ink is used up, and is easy to operate and low in cost.The replacement chip of the present application ink cartridge can be easily mechanically connected and electrically connected with the ink cartridge, so that the ink cartridge can be reused.The ink filling device of the present application can conveniently make the ink cartridge reusable by setting the above-mentioned replacement chip.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of printer consumables, and particularly relates to an ink cartridge, a replacement chip for the ink cartridge and an ink filling device. BACKGROUND

[0002] In imaging equipment such as copiers, printers and fax machines, an ink cartridge is arranged. Taking an inkjet printer as an example, a chip capable of contacting the imaging equipment and performing data communication is arranged on the ink cartridge. The chip records information such as the model of the ink cartridge, the number of imaging pages, the type, color and remaining amount of ink in the ink cartridge.

[0003] However, in the prior art, after the ink in the ink cartridge is used up, the user / other manufacturer is difficult to directly reset and rewrite the chip due to the limitation of the original manufacturer of the imaging equipment in technical means, so that even if the ink in the ink cartridge is replenished, the ink cartridge cannot continue to be used. The entire replacement chip needs to overcome technical difficulties in circuit design, decryption verification and the like. That is, the existing ink cartridge has a large difficulty in realizing reuse after the ink is used up.

[0004] Therefore, there is an urgent need for an ink cartridge, a replacement chip for the ink cartridge, i.e. an ink filling device, to solve the above technical problems. SUMMARY

[0005] A first object of the present application is to provide an ink cartridge which is convenient to reuse after the ink is used up, and is easy to operate and low in cost.

[0006] A second object of the present application is to provide a replacement chip for the ink cartridge, which can be easily mechanically and electrically connected with the ink cartridge, so that the ink cartridge can be reused.

[0007] A third object of the present application is to provide an ink filling device which can conveniently make the ink cartridge reusable by arranging the above-mentioned replacement chip.

[0008] To achieve the above objects, the present application adopts the following technical solutions:

[0009] An ink cartridge comprises:

[0010] An ink cartridge body assembly comprises a cartridge body and a fixed chip, the cartridge body is provided with a containing cavity for containing ink, and the fixed chip is connected to the cartridge body;

[0011] A replacement chip can at least store the remaining amount information of the ink in the containing cavity, and the replacement chip is detachably connected with the ink cartridge body assembly.

[0012] Optionally, the ink cartridge comprises a connecting piece which is connected with the ink cartridge body assembly, and the replacement chip is detachably connected with the connecting piece.

[0013] Optionally, the cartridge body is provided with a card slot, the fixed chip is at least partially arranged in the card slot, the connecting piece is a replacement module, the replacement chip is detachably connected to a side of the replacement module facing the card slot, the replacement module cooperates with the card slot, and the replacement chip is connected to the fixed chip.

[0014] Optionally, the card slot is provided with an insertion slide on each of the opposite side walls, and the replacement module is provided with a protruding part at each of the opposite ends, each of the protruding parts being inserted into one of the insertion slides.

[0015] Optionally, the cartridge body comprises a lower cartridge part and an upper cartridge cover, the lower cartridge part is provided with a recess capable of containing ink, and the upper cartridge cover covers the lower cartridge part to form the containing cavity.

[0016] The card slot is arranged on the upper cartridge cover or the lower cartridge part.

[0017] Optionally, the side of the replacement module facing the card slot is provided with a positioning slot, and the shape and size of the positioning slot match the shape and size of the replacement chip.

[0018] Optionally, the connecting piece is a chip connector, the chip connector is connected to the fixed chip, and the replacement chip is detachably connected to the chip connector.

[0019] Optionally, the chip connector is provided with a first interface and a second interface electrically connected, the first interface is electrically connected to the fixed chip, and when the replacement chip is connected to the chip connector, the second interface is electrically connected to the replacement chip.

[0020] Optionally, the cartridge body is provided with a relief groove, and the chip connector, at least part of the fixed chip and at least part of the replacement chip are contained in the relief groove.

[0021] Optionally, the cartridge body comprises a lower cartridge part and an upper cartridge cover, the lower cartridge part is provided with a recess capable of containing ink, and the upper cartridge cover covers the lower cartridge part to form the containing cavity.

[0022] The relief groove is arranged on the upper cartridge cover or the lower cartridge part.

[0023] Optionally, the cartridge body is provided with an ink injection port, the ink injection port is capable of communicating with the containing cavity, and the ink injection port is configured to cooperate with the bottle mouth of an ink bottle.

[0024] Optionally, the ink injection port is provided with an ink injection needle, one end of the ink injection needle extends into the containing cavity, and the other end of the ink injection needle can extend into the ink bottle, so that the ink bottle and the containing cavity are in communication.

[0025] A replacement chip is provided in the ink cartridge, and the replacement chip can store at least the residual information of the ink in the accommodating cavity.

[0026] An ink filling device comprises the ink bottle and the replacement chip, and the bottle mouth of the ink bottle is connected with the cartridge body and communicates with the accommodating cavity.

[0027] The present application has the following advantages:

[0028] The ink cartridge of the present application can be refilled with ink by the ink filling device when the ink in the cartridge body is used up, and the original replacement chip of the ink cartridge is removed from the cartridge body, and a replacement chip storing the information corresponding to the amount of ink to be filled is installed on the cartridge body, so that the ink cartridge can be reused, and the operation is convenient, and the fixed chip and the cartridge body do not need to be replaced, thereby reducing the use cost of the printer.

[0029] The replacement chip of the present application can store the ink amount information, and for the ink cartridge with used-up ink, the replacement chip can be conveniently replaced after refilling the ink into the accommodating cavity, so that the ink amount information stored in the replacement chip corresponds to the actual amount of ink contained in the ink cartridge, and the ink cartridge can be reused, and the operation is convenient and the replacement efficiency is high.

[0030] The ink filling device of the present application can conveniently restore the printing function of the ink cartridge, and the cost is low. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 is a structural schematic view of the ink cartridge and ink bottle provided by the first embodiment of the present application;

[0032] Figure 2 is an exploded structural schematic view of the ink bottle and ink cartridge provided by the first embodiment of the present application;

[0033] Figure 3 is a structural schematic view of the cartridge cover provided by the first embodiment of the present application;

[0034] Figure 4 is a structural schematic view of the exchange module and replacement chip provided by the first embodiment of the present application;

[0035] Figure 5 is Figure 2 is an enlarged view of A in

[0036] Figure 6is a structural schematic diagram of an ink cartridge provided by the second embodiment of the present application;

[0037] Figure 7 is an exploded structural schematic diagram of the ink cartridge provided by the second embodiment of the present application.

[0038] in the figure:

[0039] 100-ink bottle;

[0040] 11-cartridge body; 111-upper cartridge cover; 112-lower cartridge part; 113-clamping slot; 114-ink injection port; 115-ink injection needle; 116-avoidance slot; 117-insertion sliding way; 12-fixed chip; 121-first contact point;

[0041] 21-exchange module; 211-protruding part; 212-positioning slot; 22-chip connector;

[0042] 3-replacement chip; 31-second contact point. DETAILED DESCRIPTION

[0043] The present application will be further described below in conjunction with the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present application, but not to limit the present application. In addition, it should be noted that, for the convenience of description, only the parts related to the present application are shown in the drawings, but not all the structures.

[0044] In the description of the present application, unless explicitly defined and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0045] In the present application, unless explicitly defined and limited, the first feature "on" or "under" the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0046] In the description of the present embodiment, the terms "upper", "lower", "right", "left", and the like, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of description and simplification of operation, 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 cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0047] Embodiment one

[0048] The present embodiment provides an ink cartridge, belonging to the technical field of printer consumables, specifically, Figure 1 and Figure 2 As shown, the ink cartridge comprises an ink cartridge body assembly and a replacement chip 3, wherein the ink cartridge body assembly comprises a cartridge body 11 and a fixed chip 12, the fixed chip 12 is arranged on the cartridge body 11, the fixed chip 12 is provided with a first storage circuit, the first storage circuit is used to store related data which is difficult to be rewritten or decrypted by the ink cartridge, including but not limited to encryption mode, hardware parameter information, etc., the fixed chip 12 can enable the ink cartridge to perform a printing job, the cartridge body 11 is provided with a containing cavity for containing ink, the fixed chip 12 is connected to the cartridge body 11, the replacement chip 3 is provided with a second storage circuit, the second storage circuit can at least store the remaining information of the ink in the containing cavity, the replacement chip 3 is detachably connected with the ink cartridge body assembly, when the replacement chip 3 is mechanically connected with the ink cartridge body assembly, the replacement chip 3 is also electrically connected with the fixed chip 12. It should be noted that the detachable connection of the replacement chip 3 with the ink cartridge body assembly includes that the replacement chip 3 is directly detachably connected with the ink cartridge body assembly, or the replacement chip 3 is indirectly detachably connected with the ink cartridge body assembly through a connecting piece.

[0049] The ink cartridge of the present embodiment can replenish ink into the containing cavity by means of an ink filling device when the ink in the cartridge body 11 is used up, at the same time, the original replacement chip 3 carried by the ink cartridge is removed from the ink cartridge body assembly, and the replacement chip 3 storing the amount of ink corresponding to this time is installed on the ink cartridge body assembly, at this time, the ink amount information stored by the ink cartridge corresponds to the actual ink amount contained therein, so that the ink cartridge can be reused, the operation process is convenient, and the fixed chip 12 and the cartridge body 11 do not need to be replaced, thereby reducing the use cost of the printer; the technical difficulty to be overcome based on the information stored by the replacement chip 3 is low, so the corresponding development cost is low.

[0050] Specifically, in the embodiment, the ink cartridge further comprises a nozzle for performing image printing, the nozzle is capable of communicating with the accommodating cavity, and the nozzle is electrically connected with the fixed chip 12 through the native chip. When the ink cartridge is connected with the printer and is in a working state, the printer can make the nozzle perform image printing by the fixed chip 12. Further, the first storage circuit can further store relevant information such as production date, model, and color of the accommodated ink, and the second storage circuit of the replacement chip 3 can further store other information that can change with the change of the amount of ink in the ink cartridge, which is not limited herein.

[0051] Preferably, as shown in Figure 1 The box body 11 comprises a lower box part 112 and an upper box cover 111, the lower box part 112 is provided with a recess capable of accommodating ink, and the upper box cover 111 is arranged on the lower box part 112 to form the accommodating cavity. The box body 11 is arranged in two parts, which is convenient for opening the box body 11 to clean the accommodating cavity.

[0052] Preferably, as shown in Figure 1 and Figure 2 The box body 11 is provided with an ink filling port 114, the ink filling port 114 is capable of communicating with the accommodating cavity, and the ink filling port 114 is configured to cooperate with the bottle mouth of the ink bottle 100. When it is needed to fill ink into the accommodating cavity, the ink bottle 100 is directly inserted into the ink filling port 114, and the ink filling port 114 can limit and support the ink bottle 100, so that the ink bottle 100 can be not manually supported when filling ink into the accommodating cavity, and the filling operation is simple and convenient. Further, as shown in Figure 3 The ink filling port 114 is provided with an ink filling needle 115, one end of the ink filling needle 115 extends into the accommodating cavity, and the other end of the ink filling needle 115 extends into the ink bottle 100 from the bottle mouth of the ink bottle 100, so that the ink bottle 100 and the accommodating cavity are communicated, and then the ink in the ink bottle 100 can flow into the accommodating cavity through the ink filling needle 115, which further facilitates the ink filling process.

[0053] In the embodiment, as shown in Figure 2As shown, the ink injection port 114 is arranged on the upper box cover 111, and when the ink bottle 100 is inserted into the ink injection port 114, the opening of the ink bottle 100 faces downward, so that the ink in the ink bottle 100 can automatically flow into the containing cavity by gravity, further simplifying the ink injection operation. Of course, in other embodiments, the ink injection port 114 can also be arranged on the side wall of the lower box part 112, at which time external force may be needed to assist in extrusion to enable the ink in the ink bottle 100 to smoothly enter the containing cavity, and the specific arrangement position of the ink injection port 114 can be selected according to actual needs, which is not limited herein. Optionally, the box body 11 can include one containing cavity or multiple containing cavities, and the multiple containing cavities can be used to contain different colors of ink respectively, and when the box body 11 is arranged with multiple containing cavities, one ink injection port 114 and one ink injection needle 115 are arranged corresponding to each containing cavity, and the replacement chip 3 needs to store the ink amount corresponding to the three containing cavities, and when the replacement chip 3 is replaced, it is necessary to ensure that the ink amount information stored by the replacement chip 3 corresponds to the ink amount information in the multiple containing cavities.

[0054] Specifically, as shown in Figure 2 , Figure 4 and Figure 5 , the box body 11 is arranged with a clamping groove 113, and the fixed chip 12 is at least partially arranged in the clamping groove 113. In this embodiment, the ink cartridge further includes a connecting piece, which is a replacement module 21, the replacement chip 3 and the side of the replacement module 21 facing the clamping groove 113 are detachably connected, the replacement module 21 cooperates with the clamping groove 113 and connects the replacement chip 3 and the fixed chip 12. When the replacement chip 3 needs to be replaced, the replacement module 21 is taken out of the clamping groove 113, a new replacement chip 3 is installed on the replacement module 21, and then the replacement module 21 is reinstalled in the clamping groove 113. At this time, the replacement chip 3 realizes mechanical connection with the box body 11, and the replacement chip 3 and the part of the fixed chip 12 located in the clamping groove 113 abut, thereby realizing electrical connection, making the replacement operation of the replacement chip 3 more convenient.

[0055] Specifically, as shown in Figure 4 and Figure 5 , the fixed chip 12 is arranged with a first contact 121, and the side of the replacement chip 3 facing the fixed chip 12 is arranged with a second contact 31 after the replacement chip 3 is installed on the replacement module 21. When the replacement chip cooperates with the clamping groove 113, the first contact 121 and the second contact 31 abut, thereby realizing electrical connection of the replacement chip 3 and the fixed chip 12. Preferably, as shown in Figure 4 , the side of the replacement module 21 facing the clamping groove 113 is arranged with a positioning groove 212, the shape and size of the positioning groove 212 match the shape and size of the replacement chip 3, the positioning groove 212 plays a clamping and positioning role on the position of the replacement chip 3, thereby ensuring that when the replacement module 21 is installed in the clamping groove 113, the first contact 121 and the second contact 31 can be accurately connected.

[0056] Optionally, such as Figure 2 As shown, in this embodiment, the card slot 113 is disposed on the upper cover 111 and located at the edge of the upper cover 111. The fixing chip 12 includes two vertically connected parts, one part of which is parallel to the upper cover 111 and accommodated in the card slot 113. The replacement module 21 presses the replacement chip 3 into the card slot 113 so that the replacement chip 3 is electrically connected to the fixing chip 12. The other part of the fixing chip 12 is attached to the side of the lower cartridge 112 and is used to connect with the original chip of the ink cartridge. In other embodiments, the card slot 113 can also be disposed on the side wall of the lower cartridge 112. In this case, the fixing chip 12 is a plate-shaped structure and can be completely accommodated in the card slot 113. The replacement module 21 presses the replacement chip 3 into the card slot 113 so that the replacement chip 3 is electrically connected to the fixing chip 12. The specific setting position of the card slot 113 can be selected according to actual needs and is not specifically limited here.

[0057] Preferably, such as Figure 5 As shown, the card slot 113 has insertion slides 117 on its opposite sidewalls, and the replacement module 21 has protrusions 211 at its opposite ends. Each protrusion 211 is inserted into a corresponding insertion slide 117. Through the cooperation between the protrusions 211 and the insertion slides 117, the replacement module 21 can be precisely fixed in the card slot 113, and can be removed by pulling, further facilitating the replacement of the chip 3. Of course, in other embodiments, the replacement module 21 can also be fixed in the card slot 113 by fasteners, or a spring clip can be provided on the replacement module 21 to engage with the card slot 113, etc., which is not limited here.

[0058] This embodiment also provides an ink refilling device, which includes an ink bottle 100 and the aforementioned replacement chip 3. The bottle opening of the ink bottle 100 can be connected to the ink filling port 114 on the cartridge body 11 and communicates with the receiving cavity of the ink cartridge through the ink filling needle 115. The replacement chip 3 can be detachably connected to the connector of the ink cartridge. When the replacement chip 3 is connected to the connector, the replacement chip 3 is electrically connected to the fixing chip 12. Therefore, after the ink in the ink cartridge is used up, the ink bottle 100 containing ink can be installed at the ink filling port 114 to refill the receiving cavity, and the replacement chip 3 corresponding to the stored ink volume information and the injected ink volume can be installed on the connector of the ink cartridge for fixation. The ink refilling device of the present invention can easily restore the printing function of the ink cartridge and is low in cost.

[0059] Example 2

[0060] The embodiment provides an ink cartridge, which comprises an ink cartridge body assembly, a connecting piece and a replacement chip 3, the ink cartridge body assembly comprises a cartridge body 11 and a fixed chip 12, the specific structure of the cartridge body 11, the storage content of the fixed chip 12 and the replacement chip 3 of the embodiment are basically the same as those of the first embodiment, and details are not repeated here, and the difference mainly lies in the structure of the connecting piece and the replacement mode of the replacement chip 3, in particular:

[0061] As shown in Figure 6 and Figure 7 , the connecting piece is a chip connector 22, the chip connector 22 is connected with the fixed chip 12, and the replacement chip 3 is detachably connected with the chip connector 22, that is, in the embodiment, when the replacement chip 3 is replaced, the chip connector 22 does not need to be removed, only the replacement chip 3 needs to be directly removed from the chip connector 22, and a new replacement chip 3 is replaced. Optionally, in the embodiment, the chip connector 22 can be welded and fixed on the fixed chip 12, or fixed on the fixed chip 12 through a screw or the like fastener, and the chip connector 22 is provided with a plug-in interface, and the replacement chip 3 is directly plugged into the plug-in interface; in other embodiments, the chip connector 22 can also include a body part and a gland, the replacement chip 3 is placed on the body part, and then the replacement chip 3 is pressed tightly through the gland, so as to realize the detachable connection between the chip connector 22 and the replacement chip 3. On the basis of not violating the inventive concept of the application, the replacement chip 3 can be connected with the chip connector 22 in any existing detachable manner.

[0062] Optionally, the chip connector 22 is provided with electrically connected first and second interfaces, the first interface is electrically connected with the fixed chip 12, and when the replacement chip 3 is connected with the chip connector 22, the second interface is electrically connected with the replacement chip 3. In particular, the fixed chip 12 is provided with a third contact point, after the chip connector 22 is fixed on the fixed chip 12, the third contact point is electrically connected with the first interface, and the replacement chip 3 is provided with a fourth contact point, after the replacement chip 3 is plugged into the plug-in interface of the chip connector 22, the fourth contact point is connected with the second interface, so that the electrical connection between the replacement chip 3 and the fixed chip 12 is realized in the process that the replacement chip 3 is mechanically connected with the ink cartridge body assembly. In other embodiments, the chip connector 22 can also not be provided with the electrically connected first and second interfaces, the third contact point on the fixed chip 12 is arranged at a position avoiding the chip connector 22, and the fourth contact point on the replacement chip 3 is also arranged at a position avoiding the chip connector 22, as long as the third contact point and the fourth contact point can abut to realize electrical connection after the replacement chip 3 is plugged into the chip connector 22, which is not limited in detail.

[0063] Preferably, as shown in Figure 7As shown, the box body 11 is provided with a recess 116, the chip connector 22, at least part of the fixed chip 12 and at least part of the replacement chip 3 are accommodated in the recess 116, that is, the connection parts of the fixed chip 12 and the replacement chip 3 are accommodated in the recess 116 to protect the connection parts and avoid the problem of poor contact caused by the connection parts being bumped.

[0064] Optionally, in the embodiment, the recess 116 is arranged at the edge of the upper box cover 111, the fixed chip 12 includes two vertically arranged parts, one part is parallel to the upper box cover 111 and is accommodated in the recess 116, and the other part is arranged in abutment with the side wall of the lower box part 112, the chip connector 22 is arranged in the recess 116 and is fixedly connected with the part of the fixed chip 12, the plug-in interface of the chip connector 22 faces the side surface, and the replacement chip 3 also includes two vertically arranged parts, one part is parallel to the upper box cover 111 and is plugged into the plug-in interface, and the other part is arranged in parallel with the side wall of the lower box part 112. In this embodiment, if the first interface and the second interface of the chip connector 22 are not arranged to be electrically connected, the third contact is arranged at the part of the fixed chip 12 abutting with the lower box part 112, and the fourth contact is arranged at the part of the replacement chip 3 parallel with the side wall of the lower box part 112, so that the third contact and the fourth contact can be electrically connected.

[0065] In other embodiments, the recess 116 can also be arranged on the side wall of the lower box part 112, at this time, the replacement chip 3 and the fixed chip 12 are both flat, and the replacement chip 3, the fixed chip 12 and the chip connector 22 can be completely accommodated in the recess 116, and the specific arrangement of the recess 116 can be selected according to actual needs, which is not limited here.

[0066] Embodiment three

[0067] The embodiment provides an ink cartridge, which comprises an ink cartridge body assembly and a replacement chip 3, the ink cartridge body assembly comprises a box body 11 and a fixed chip 12, and the storage content of the fixed chip 12 and the replacement chip 3 in the embodiment is basically the same as that in the first embodiment, which will not be repeated here. The difference mainly lies in the specific connection mode of the replacement chip 3 and the ink cartridge body assembly, specifically:

[0068] In the embodiment, the ink cartridge is not provided with a connecting piece, and the replacement chip 3 is directly detachably connected with the ink cartridge body assembly. The replacement chip 3 can be directly detachably connected with the box body 11, or can be directly detachably connected with the fixed chip 12, so that the structure of the ink cartridge can be further simplified, and the cost of the ink cartridge is reduced.

[0069] Optionally, the first contact 121 is arranged on the fixed chip 12, the replacement chip 3 is arranged with the clamping protrusion and the second contact 31, and the cartridge body 11 or the fixed chip 12 is arranged with the clamping slot, when the clamping protrusion is clamped in the clamping slot, the first contact 121 is connected with the second contact 31, that is, when the replacement chip 3 is mechanically connected with the cartridge body assembly, the fixed chip 12 and the replacement chip 3 are electrically connected, the structure is simple and the operation is convenient. In other embodiments, the cartridge body 11 or the fixed chip 12 can be arranged with the clamping protrusion, the replacement chip 3 is arranged with the clamping slot, and the clamping protrusion can be clamped in the clamping slot, and the arrangement can be selected according to actual needs, which is not limited herein.

[0070] Obviously, the above embodiments of the present application are only examples for clearly illustrating the present application, and are not intended to limit the embodiments of the present application. For those skilled in the art, according to the idea of the present application, the specific embodiments and application range can be changed, and the content of the specification should not be understood as limiting the present application. Any modification, equivalent replacement and improvement within the spirit and principle of the present application should be included in the protection scope of the claims of the present application.

Claims

1. An ink cartridge, characterized by, The ink cartridge comprises: an ink cartridge body assembly, which comprises a cartridge body (11) provided with a containing cavity for containing ink, and a fixed chip (12) connected to the cartridge body (11); the fixed chip (12) is provided with a first storage circuit for storing relevant data of the ink cartridge which is difficult to be rewritten or decrypted; a replacement chip (3) capable of storing at least the residual information of the ink in the containing cavity, which is detachably connected to the ink cartridge body assembly; the ink cartridge further comprises a connecting member which is connected to the ink cartridge body assembly, and the replacement chip (3) is detachably connected to the connecting member; the connecting member is a chip connector (22) which is connected to the fixed chip (12), and the replacement chip (3) is directly inserted into the insertion port of the chip connector (22); the cartridge body (11) is provided with an ink injection port (114) which can communicate with the containing cavity, and the ink injection port (114) is configured to be matched with the bottle mouth of an ink bottle (100); the ink injection port (114) is provided with an ink injection needle (115) which extends into the containing cavity at one end and extends into the ink bottle (100) at the other end to make the ink bottle (100) and the containing cavity communicate.

2. The ink cartridge of claim 1, wherein the cartridge body (11) is provided with a clamping groove (113) in which the fixed chip (12) is at least partially arranged, the connecting member is a replacement module (21), and the replacement chip (3) is detachably connected to the side of the replacement module (21) facing the clamping groove (113), the replacement module (21) is matched with the clamping groove (113) and makes the replacement chip (3) connected to the fixed chip (12).

3. The ink cartridge of claim 2, wherein the side walls of the clamping groove (113) oppositely arranged are respectively provided with insertion sliding channels (117), and the two ends of the replacement module (21) oppositely arranged are respectively provided with protruding portions (211), each of the protruding portions (211) is correspondingly inserted into one of the insertion sliding channels (117).

4. The ink cartridge of claim 2, wherein the cartridge body (11) comprises a lower cartridge part (112) and an upper cartridge cover (111), the lower cartridge part (112) is provided with a groove capable of containing ink, and the upper cartridge cover (111) is arranged on the lower cartridge part (112) to form the containing cavity; the clamping groove (113) is arranged on the upper cartridge cover (111) or the lower cartridge part (112).

5. The ink cartridge of claim 2, wherein the side of the replacement module (21) facing the clamping groove (113) is provided with a positioning groove (212) which is matched with the shape and size of the replacement chip (3).

6. The ink cartridge of claim 1, wherein The chip connector (22) is provided with electrically connected first and second interfaces, the first interface is electrically connected with the fixed chip (12), and the second interface is electrically connected with the replacement chip (3) when the replacement chip (3) is connected with the chip connector (22).

7. The ink cartridge of claim 1, wherein The box body (11) is provided with a relief groove (116), and the chip connector (22), at least part of the fixed chip (12) and at least part of the replacement chip (3) are accommodated in the relief groove (116).

8. The ink cartridge of claim 7, wherein The box body (11) comprises a lower box part (112) and an upper box cover (111), the lower box part (112) is provided with a recess capable of accommodating ink, and the upper box cover (111) is arranged on the lower box part (112) to form the accommodation cavity. The relief groove (116) is arranged on the upper box cover (111) or the lower box part (112).

9. A replacement chip (3) characterized by In the ink cartridge of any one of claims 1-8, the replacement chip (3) can at least store the remaining amount information of the ink in the accommodation cavity, and the replacement chip (3) is detachably connected with the ink cartridge body assembly.

10. An ink filling device characterized by comprising: The ink bottle (100) and the replacement chip (3) of claim 9 are included, and the bottle opening of the ink bottle (100) can be connected with the box body (11) in a matching mode and communicate with the accommodation cavity.

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