Power battery acid adding replacement device

Abstract

The utility model relates to the technical field of power battery acid adding, in particular to a power battery acid adding replacement device. Comprising an inner part, the inner part is provided with a plurality of butt-joint ports, each butt-joint port comprises an upper port and a lower port, the upper ports and the lower ports of the side butt-joint ports and the middle butt-joint ports are not communicated, and the upper ports and the lower ports of the other butt-joint ports are communicated; one side butt joint port and one middle butt joint port which are located on the same side are paired and replaced, a lower opening of each side butt joint port is communicated with an upper opening of the corresponding middle butt joint port through a communicating pipe, an upper opening of each side butt joint port is communicated with a lower opening of the corresponding middle butt joint port through a communicating pipe, and the inner part is located in the shell. The plurality of butt-joint ports can be directly mounted in the shell after being connected, so that the processing and the assembly are convenient, the processing quality can be ensured, and the leakage of acid liquor during acid adding is prevented. And the internal part can be conveniently taken out for repair or maintenance.

Description

Technical Field

[0001] This utility model relates to the field of power battery acid addition technology, specifically to a power battery acid replacement device. Background Technology

[0002] A 12V lead-acid battery consists of 6 individual cells connected in series. The cell layout along the width of the plates (i.e., the compression surface of the electrode group) is generally 3*2, 2*3, or 1*6. Except for the 3*2 structure, where each cell has the same heat dissipation area, the 2*3 and 1*6 structures have the problem of inconsistent heat dissipation among individual cells. This will lead to inconsistencies in heat dissipation from the beginning of the battery formation process.

[0003] After adding acid to the battery, the dilute sulfuric acid undergoes a vigorous acid-base neutralization and sulfation reaction with the electrode material, generating a large amount of heat in a short time. In a 1*6 battery structure, the temperature difference between the edge cells and the middle cells is significant. After about an hour of settling following the addition of acid, the temperatures of each cell become relatively uniform. During the formation process, each cell continues to release heat, and due to the different heat exchange surfaces of the edge and middle cells, a significant temperature difference arises again. This leads to two problems: firstly, the degree of sulfation of the electrode material differs during the settling period before charging; secondly, the different temperatures during formation result in variations in formation efficiency and water loss, both of which lead to differences in the conversion rate and phase composition of the active material, thus affecting battery performance.

[0004] To address the aforementioned technical issues, patent document CN216145750U discloses a power battery acid filling and replacement device. This device includes a main body with multiple sets of interfaces. Each set of interfaces includes an upper interface and a lower interface. The upper interface communicates with the nozzle of an acid filling pot, and the lower interface communicates with the corresponding battery acid filling hole. The outermost interfaces are side interfaces, and the two middle sets are center interfaces. Each set of side interfaces is paired with one of the center interfaces for replacement. Between the paired side interfaces and the center interfaces: the upper interface of the side interface is connected to the lower interface of the center interface, and the lower interface of the side interface is connected to the upper interface of the center interface. The upper and lower interfaces of other sets of interfaces are directly connected. This device improves the temperature uniformity of each cell after acid addition by replacing and connecting the top and bottom interfaces with the middle cells, thus ensuring a more consistent formation process. This effectively solves the problems of active material conversion rate and phase differences caused by temperature variations during the acid addition and formation stages, thereby improving battery performance. Therefore, it has been widely adopted within the company.

[0005] However, the production of this device is quite complicated. It requires first machining process holes, then drilling and replacing them, and finally sealing the process holes, making manufacturing rather cumbersome. During the transfer process after the battery is acid-added, vibrations between the battery and the device can easily cause leakage through the process holes, leading to acid-addition failure. Utility Model Content

[0006] The main objective of this invention is to provide a power battery acid replacement device that is easy to manufacture and can prevent acid leakage during the acid addition process.

[0007] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0008] A power battery acid replacement device is disclosed. The power battery includes a battery compartment and a middle cover that are mutually covered. The inner cavity of the battery compartment is divided into six individual cells by a partition plate. The middle cover has acid filling holes for adding acid to the corresponding individual cells.

[0009] The replacement device is used to connect the spout of the acid filler to the acid filling hole of the power battery when adding acid to the battery using the acid filler.

[0010] The replacement device includes an internal component with multiple interfaces. Each interface includes an upper opening and a lower opening. The upper opening is used to communicate with the spout of the acid filling pot, and the lower opening is used to communicate with the corresponding acid filling hole of the power battery.

[0011] The outermost interface is the edge interface, and the two adjacent interfaces in the middle are the middle interfaces. The upper and lower ports of the edge and middle interfaces are not connected, while the upper and lower ports of the other interfaces are connected. An edge interface and a middle interface on the same side are paired and interchanged. The lower port of the edge interface is connected to the upper port of the middle interface through a connecting pipe, and the upper port of the edge interface is connected to the lower port of the middle interface through a connecting pipe.

[0012] The internal components are located inside the housing. Two adjacent pairs of interfaces are fixedly connected by a connecting plate. The bottom plate of the housing has a corresponding insertion hole. The lower opening of the interface passes through the insertion hole of the bottom plate of the housing. A cover plate is provided at the upper end of the housing. The cover plate has a corresponding insertion hole. The upper opening of the interface passes through the insertion hole of the cover plate. The cover plate and the bottom plate of the housing are detachably and fixedly connected to the connecting plate.

[0013] Specifically, both the upper and lower openings of the interface are fixedly sealed with sealing rings.

[0014] Specifically, each of the sockets is fixed with a sealing ring, and the upper and lower openings of the interface are sealed to the cover plate and the bottom plate of the housing through the sealing rings on the upper and lower sides, respectively.

[0015] Specifically, a sealing plate is fixedly and sealed at the middle position inside the middle interface and the side interface.

[0016] Specifically, threaded holes are provided at both the upper and lower ends of the connecting plate, and through holes corresponding to the threaded holes are provided on the bottom plate and the cover plate of the housing. The screw passes through the through hole and is threaded into the threaded hole.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] 1. This replacement device can connect the edge cells and the middle cells, making the temperature rise of each cell after adding acid to the power battery relatively consistent. This improves the consistency of acid temperature after adding acid and during the formation process, making the formation process of each cell relatively consistent. It effectively solves the problem of active material conversion rate and phase difference caused by temperature during the acid addition and standing stage and during the formation period, thereby improving battery performance.

[0019] 2. The internal components are located inside the housing. After connecting multiple interfaces, they can be directly installed into the housing, facilitating processing and assembly, ensuring processing quality, and preventing acid leakage during acid addition. It also allows for easy removal of the internal components for repair or maintenance. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the replacement device.

[0021] Figure 2 This is a front view of the replacement device.

[0022] Figure 3 This is a top view of the replacement device.

[0023] Figure 4 This is a schematic diagram showing the connection of multiple interfaces.

[0024] Figure 5 This is a top view after multiple interfaces are connected.

[0025] Figure 6 for Figure 5 Sectional view along the AA direction.

[0026] Figure 7 This is a top view of the casing.

[0027] Figure 8 This is a top view of the cover plate.

[0028] The components in the attached diagram are named as follows: 1. Housing, 2. Cover plate, 3. Screw, 4. Connecting interface, 5. Connecting pipe, 6. Connecting plate, 7. Threaded hole, 8. Insertion hole, 9. Through hole, 10. Sealing plate. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0030] Example 1: Refer to Figures 1-8 As shown, a power battery acid replacement device is disclosed. The power battery includes a battery compartment and a middle cover that are mutually covered. The inner cavity of the battery compartment is divided into six individual cells by a partition plate. The middle cover has acid filling holes for adding acid to the corresponding individual cells.

[0031] The replacement device is used to connect the nozzle of the acid filler to the acid filling hole of the power battery when adding acid to the battery using the acid filler.

[0032] The replacement device includes internal components with multiple interfaces 4. Each interface 4 includes an upper opening and a lower opening, and a sealing ring is fixedly and sealed inside both the upper and lower openings of the interface 4. The upper opening is used to communicate with the spout of the acid filling pot, and the lower opening is used to communicate with the corresponding acid filling hole of the power battery.

[0033] The outermost interface 4 is the side interface, and the two adjacent interfaces 4 in the middle are the center interfaces. A sealing plate 10 is fixedly and sealed to the middle of the center and side interfaces. The upper and lower openings of the side and center interfaces are not connected. The upper and lower openings of the remaining interfaces 4 are connected.

[0034] A side-pair interface and a middle-pair interface located on the same side are paired and interchanged. The lower port of the side-pair interface is connected to the upper port of the middle-pair interface through a connecting pipe 5, and the upper port of the side-pair interface is connected to the lower port of the middle-pair interface through a connecting pipe 5.

[0035] In this embodiment, the power battery has six individual cells, therefore, the internal components have six interfaces 4, numbered A, B, C, D, E, and F respectively. A and F are the side interfaces, and C and D are the center interfaces. The upper port of A is connected to the lower port of C via a connecting pipe 5, and the lower port of A is connected to the upper port of C via a connecting pipe 5. The upper port of D is connected to the lower port of F via a connecting pipe 5, and the upper port of F is connected to the lower port of D via a connecting pipe 5. The upper port of B is directly connected to the lower port of B, and the upper port of E is directly connected to the lower port of E.

[0036] The internal components are located inside the housing 1. Two adjacent pairs of interfaces 4 are fixedly connected by a connecting plate 6. The bottom plate of the housing 1 has a socket 8 corresponding to the interface 4. The lower opening of the interface 4 passes through the socket 8 of the bottom plate of the housing 1.

[0037] The upper end of the housing 1 is provided with a cover plate 2, and the cover plate 2 has a socket 8 corresponding to the interface 4. The upper opening of the interface 4 passes through the socket 8 of the cover plate 2.

[0038] Each socket 8 is fixed with a sealing ring, and the upper and lower openings of the interface 4 are sealed to the cover plate 2 and the bottom plate of the housing 1 respectively through the sealing rings on the upper and lower sides.

[0039] The internal components are located inside the housing 1. After multiple interfaces 4 are connected, they can be directly installed into the housing 1, which is convenient for processing and assembly, can ensure processing quality, and prevent acid leakage when adding acid.

[0040] Example 2: Based on Example 1, referring to... Figures 1-8 As shown, the cover plate 2 and the bottom plate of the housing 1 are detachably and fixedly connected to the connecting plate 6.

[0041] The connecting plate 6 is provided with threaded holes 7, and the bottom plate of the housing 1 and the cover plate 2 are provided with through holes 9 corresponding to the threaded holes 7. The screw 3 passes through the through hole 9 and is threaded into the threaded hole 7.

[0042] The housing 1 and cover plate 2 are connected to the connecting plate 6 by screws 3, which facilitates the removal of internal parts for repair or maintenance.

[0043] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A power battery acid-adding and replacement device, wherein the power battery includes a battery compartment and a middle cover that cover each other, the inner cavity of the battery compartment is divided into six individual compartments by a partition plate, and the middle cover has acid-adding holes for adding acid to the corresponding individual compartments; the replacement device is used for connecting the nozzle of the acid-adding kettle to the acid-adding hole of the power battery when adding acid to the battery using an acid-adding kettle; the replacement device includes an inner component, the inner component having multiple docking interfaces (4); each docking interface (4) includes an upper opening and a lower opening, the upper opening being used to communicate with the nozzle of the acid-adding kettle, and the lower opening being used for... It is connected to the corresponding power battery acid filling hole; the outermost interface (4) is the side interface, the two adjacent interfaces (4) in the middle are the middle interfaces, the upper and lower openings of the side interface and the middle interface are not connected, and the upper and lower openings of the other interfaces (4) are connected; a side interface and a middle interface on the same side are paired and replaced, the lower opening of the side interface and the upper opening of the middle interface are connected through a connecting pipe (5), and the upper opening of the side interface and the lower opening of the middle interface are connected through a connecting pipe (5); characterized in that, The internal components are located inside the housing (1). Two adjacent pairs of interfaces (4) are fixedly connected by a connecting plate (6). The bottom plate of the housing (1) has a corresponding insertion hole (8) for the interface (4). The lower opening of the interface (4) passes through the insertion hole (8) of the bottom plate of the housing (1). The upper end of the housing (1) is provided with a cover plate (2). The cover plate (2) has a corresponding insertion hole (8) for the interface (4). The upper opening of the interface (4) passes through the insertion hole (8) of the cover plate (2). The cover plate (2) and the bottom plate of the housing (1) are detachably fixedly connected to the connecting plate (6).

2. The power battery acid replacement device according to claim 1, characterized in that, Both the upper and lower openings of the interface (4) are fixedly sealed with sealing rings.

3. The power battery acid replacement device according to claim 1, characterized in that, Each of the insertion holes (8) is fixed with a sealing ring, and the upper and lower openings of the interface (4) are sealed to the cover plate (2) and the bottom plate of the housing (1) respectively through the sealing rings on the upper and lower sides.

4. The power battery acid replacement device according to claim 1, characterized in that, The middle and side interfaces are fixedly sealed with sealing plates (10) at the middle position.

5. The power battery acid replacement device according to claim 1, characterized in that, The upper and lower ends of the connecting plate (6) are provided with threaded holes (7), and the bottom plate and cover plate (2) of the housing (1) are provided with through holes (9) corresponding to the threaded holes (7). The screw (3) passes through the through hole (9) and is threaded into the threaded hole (7).

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