Lead-acid storage battery with replaceable outdated unit cells

Abstract

The utility model discloses a lead-acid storage battery capable of replacing backward unit cells, which relates to the technical field of lead storage batteries, and comprises a fixed baffle plate, the fixed baffle plate is connected with a plurality of bottom grooves, and pole groups are fixed in the bottom grooves; the bottom groove is fixed through the semi-open fixed baffle plate, so that the bottom groove is convenient to disassemble and assemble, and the pole group with backward performance is convenient to replace; the voltage of the pole group in each bottom groove is detected through the cover plate, and the efficiency of judging the performance of the pole group is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of lead-acid batteries, in particular to a lead-acid battery with replaceable lagging cells. Background Art

[0002] In actual applications, the existing lead-acid battery structure may experience poor performance of individual cells. This poor performance phenomenon is often caused by sulfation, short circuit or low electrolyte density. When these problems occur in a single cell, it will have a great impact on the overall battery performance. Poor cells may also cause failures in other cells. Due to the uneven current distribution in the battery pack, some cells may bear too much current load, which will accelerate their degradation process. This will not only further reduce the performance of the battery pack, but also increase maintenance and replacement costs.

[0003] For example, Chinese patent CN218448245U, published on February 3, 2023, discloses a lead-acid battery pack, including a box with an opening on the top surface, and four lead-acid batteries placed in the box, the box is provided with a first vent hole, and a detachably connected top cover is provided at the top opening of the box, the top cover has a charging interface and a handle; each lead-acid battery is connected in series with each other and electrically connected to the charging interface, and each lead-acid battery is divided into two layers in the box, two on each layer, and a pad is provided between the two layers; the bottom surface of the top cover is provided with a buffer block against the top surface of the upper lead-acid battery. Although the lead-acid battery is small in size, which reduces the cost, if the performance of a single battery lags behind and needs to be replaced as a whole, the cost is still high. Utility Model Content

[0004] The technical problem to be solved by the utility model is that the existing battery pack with outdated batteries has a high replacement cost. A lead-acid battery with replaceable outdated cells is proposed, which can replace a single outdated battery and reduce the replacement cost.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: a lead-acid battery with replaceable lagging cells, including a fixed baffle, which is connected to a plurality of bottom grooves, and a pole group is fixed in the bottom groove.

[0006] A lead-acid battery with replaceable lagging cells, wherein a plurality of bottom slots are fixed by a fixed baffle to form a battery pack, wherein the fixed baffle is a semi-open structure, formed by a bottom plate and two side plates perpendicular to the bottom plate, and the fixed baffle is connected to the bottom slot by a mortise and tenon structure, so that the bottom slot can be easily disassembled. When a certain pole group needs to be replaced, the corresponding bottom slot can be removed for replacement.

[0007] Preferably, the top of the bottom tank is connected to the middle cover, adjacent middle covers are connected by copper sheets, the top of the copper sheet is covered with a copper sheet cover plate, and a cover sheet is fixed on the middle cover. The pole groups in the bottom tank are connected as a whole through the copper sheet, and the internal pole group voltage is detected through the cover sheet.

[0008] Preferably, the cover is provided with a sealing cover, an LED voltage display screen is fixed on the sealing cover, and connecting plates are provided at both ends of the sealing cover. The LED voltage display screen will display the current pole group voltage, which is convenient for judging the pole group with problems.

[0009] Preferably, the middle covers at both ends are respectively a left middle cover and a right middle cover, the middle cover between the left middle cover and the right middle cover is a middle middle cover, the middle cover is provided with a copper sheet placement slot, and the middle middle cover is divided into two specifications according to the copper sheet placement slot opening in opposite directions. The middle cover includes three types: a left middle cover, a middle middle cover, and a right middle cover, wherein the middle middle cover is divided into two specifications according to the different opening directions of the copper sheet placement slot.

[0010] Preferably, the copper sheet placement groove is provided with a connection hole, the middle cover is provided with a liquid injection hole, and the groove at the edge of the liquid injection hole is in contact with the sealing cover sheet. Liquid is injected into the bottom groove through the liquid injection hole.

[0011] Preferably, the electrode group includes a plurality of positive plates, the positive plates are wrapped by separator paper, and negative plates are arranged between adjacent positive plates, and the electrodes of the positive plates and the electrodes of the negative plates are interlaced with each other. The positive plates and the negative plates are interlaced to form an electrode group, and the positive plates and the negative plates are isolated by separator paper.

[0012] Preferably, the pole group is connected to a bus bar, the bus bar is provided with a bus bar connection hole and a pole, and adjacent bus bars are connected through the bus bar connection hole. The electrodes on the pole group are led out through the bus bar, and the poles on the bus bar are the electrodes of the pole group.

[0013] Preferably, the busbar connection hole is connected to the copper sheet and the connection sheet through the connection hole by connecting screws.

[0014] Preferably, the bottom groove is provided with a plurality of connection blocks and connection grooves, and adjacent bottom grooves are connected by the connection blocks and the connection grooves. The bottom grooves are fixed by mortise and tenon structures, which is convenient for installation and disassembly.

[0015] Preferably, a plurality of connecting blocks are provided inside the fixed baffle, and the bottom groove and the connecting blocks are connected through the connecting blocks and the connecting grooves. The bottom groove and the fixed baffle are fixed through a mortise and tenon structure, which is convenient for installation and disassembly.

[0016] The substantial effect of the utility model is as follows: the utility model fixes the bottom slot by a semi-open fixed baffle, which is convenient for disassembly and installation of the bottom slot, thereby facilitating replacement of pole groups with poor performance; and detects the voltage of the pole group in each bottom slot by a cover plate, thereby improving the efficiency of judging the performance of the pole group. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional schematic diagram of the lead-acid battery of Example 1.

[0018] Figure 2 This is a top view of the lead-acid battery of Example 1.

[0019] Figure 3 It is a three-dimensional schematic diagram of the fixed baffle of the first embodiment.

[0020] Figure 4 It is a three-dimensional schematic diagram of three types of single-grid bottom troughs of left, middle and right specifications according to the first embodiment.

[0021] Figure 5 It is a three-dimensional schematic diagram of a single pole group of Example 1.

[0022] Figure 6 It is a three-dimensional schematic diagram of the pole group and bus combination of the first embodiment.

[0023] Figure 7 It is a three-dimensional schematic diagram of four specifications of middle covers of embodiment 1, namely left, middle and right.

[0024] Figure 8 This is a top view of the copper sheet installation in Example 1.

[0025] Fig. 9 This is a top view of the cover plate installation of Example 1.

[0026] Fig.10 It is a three-dimensional schematic diagram of cover sheets of three specifications: left, middle and right according to the first embodiment.

[0027] Among them: 1. Bottom groove; 101. Left single cell; 102. Middle single cell; 103. Right single cell; 104. Connection block; 105. Connection groove; 2. Fixed baffle; 3. Middle cover; 301. Left middle cover; 302. Middle middle cover; 303. Right middle cover; 304. Copper sheet placement groove; 305. Liquid injection hole; 306. Connection hole; 307. Pole hole; 4. Cover; 401. LED voltage display screen; 402. Sealing cover; 403. Connection sheet; 5. Pole group; 501. Positive plate; 502. Negative plate; 503. Separator paper; 6. Bus; 601. Bus connection hole; 602. Pole; 7. Copper sheet; 8. Connection screws; 9. Copper sheet cover. DETAILED DESCRIPTION

[0028] The specific implementation of the utility model is further described below through specific embodiments and in conjunction with the accompanying drawings.

[0029] Embodiment one:

[0030] A lead-acid battery with replaceable lagging cells, such as Figure 1 and Figure 2 As shown, the main body of the lead-acid battery is mainly composed of a bottom tank 1 and a fixed baffle 2. The number of bottom tanks 1 is determined according to the specifications of the lead-acid battery, and the length of the fixed baffle 2 is determined according to the number of bottom tanks 1. There are a total of six bottom tanks 1 used in this embodiment. The fixed baffle 2 is used to gather the separated bottom tanks 1 into a whole. A pole group 5 is arranged inside the bottom tank 1, and the pole group 5 is immersed in the electrolyte. A middle cover 3 is also fixed on the top of the bottom tank 1, which is used to seal the bottom tank 1 to prevent the internal electrolyte from flowing out. A copper sheet 7 is arranged on the cover plate, and the pole group 5 in the bottom tank 1 is connected together by the copper sheet 7 to form a battery pack. A copper sheet cover plate 9 is arranged on the copper sheet 7 to protect the copper sheet 7 from interference from the external environment.

[0031] like Figure 3 and Figure 4 As shown, the fixed baffle 2 is a semi-open design. The fixed baffle 2 used in this embodiment is formed by three vertical plates perpendicular to each other, one of which is used as a bottom plate and the other is used as a side plate. Two parallel connecting blocks 104 are respectively arranged on the bottom plate and one of the side plates. The cross section of the connecting block 104 is circular, and the two sides of the connection with the layout are concave inward. A connecting groove 105 is arranged at the bottom of the bottom groove 1 and the side that is in contact with the side of the fixed baffle 2 provided with the connecting block 104, and the shape of the connecting groove 105 matches the shape of the connecting block 104. When the bottom groove 1 is fixed on the fixed baffle 2, the connecting block 104 is embedded in the connecting groove 105 to form a mortise and tenon structure, thereby improving the connection strength between the bottom groove 1 and the fixed baffle 2. At the same time, the arrangement of the connecting block 104 and the connecting groove 105 also facilitates the determination of the installation position during installation, thereby improving the installation efficiency.

[0032] The bottom groove 1 is divided into three different specifications according to the different positions, respectively with the innermost left cell 101, the outermost right cell 103 and the middle cell 102 between the two. Three evenly distributed connection grooves 105 are arranged on the side where the left cell 101 and the middle cell 102 are attached. Three evenly distributed connection blocks 104 are arranged on the side where the middle cell 102 and the left cell 101 are attached, and three evenly distributed connection grooves 105 are arranged on the other side of the middle cell 102. Three evenly distributed connection blocks 104 are arranged on the side where the right cell 103 and the middle cell 102 are connected. In this embodiment, there are six bottom grooves 1, distributed as one left bottom groove 1, four middle bottom grooves 1 and one right bottom groove 1. The bottom grooves 1 are fixed to each other by forming a mortise and tenon structure through the connection grooves 105 and the connection blocks 104.

[0033] like Figure 5 As shown, the pole group 5 is formed by a plurality of positive plates 501 and a plurality of negative plates 502, and the positive plates 501 and the negative plates 502 are staggered and overlapped, so that the positive poles 602 on the positive plates 501 and the negative poles 602 on the negative plates 502 are respectively located in two columns. Both sides of the positive plate 501 are covered by separator paper 503, that is, the positive plate 501 and the negative plate 502 are isolated by the separator paper 503 to prevent the positive plate 501 and the negative plate 502 from affecting each other. The number of negative plates 502 in a cluster is one more than the number of positive plates 501, and both the positive plate 501 and the negative plate 502 are chamfered.

[0034] like Figure 6 As shown, the pole group 5 is fixed by a busbar 6. The busbar 6 is metal, conductive, and fixed on the pole lugs of the pole group 5. The two columns of positive and negative pole lugs of each pole group 5 are connected by a busbar 6 respectively. According to the different positions of the pole group 5 in the bottom slot 1, the busbar 6 thereon is also different. The busbar 6 is divided into two types, one is provided with a busbar connection hole 601, and the other is provided with a pole 602. The busbar 6 located in the middle cell 102 only has a busbar 6 with a busbar connection hole 601, and the pole groups 5 in the left cell 101 and the right cell 103 are respectively provided with a busbar 6 with a pole 602. At the same time, the two busbars 6 are respectively provided on the positive pole 602 and the negative pole 602.

[0035] like Figure 7As shown, the middle cover 3 at the top of the bottom tank 1 also has different specifications according to the different bottom tanks 1, namely the left middle cover 301, the right middle cover 303 and the middle middle cover 302. The settings on the left middle cover 301 are similar to those on the right middle cover 303, but the directions of the settings are opposite, that is, the left middle cover 301 and the right middle cover 303 are spliced ​​together, and they are opposite in shape along the splicing line. The middle middle cover 302 is divided into two specifications due to the different directions of the copper sheet placement groove 304. A connecting hole 306 is provided in the copper sheet placement groove 304, and an opening is provided at the connection of the copper sheet placement groove 304 of adjacent middle covers 3. The connecting screw 8 can connect the bus connection hole 601 on the bus 6 with the copper sheet 7 through the connecting hole 306, so as to lead the current on the internal pole group 5. A liquid injection hole 305 is provided in the middle of the middle cover 3 for injecting electrolyte into the bottom tank 1. A pole hole 307 is also provided on the left middle cover 301 and the right middle cover 303 respectively, for embedding the two-pole pole 602 to connect with the outside.

[0036] like Figure 8 , Fig. 9 and Fig.10 As shown, the groove around the injection hole 305 matches the shape and size of the sealing cover sheet 402 on the cover sheet 4, and the cover sheet 4 is fixed in the groove to seal the injection hole 305. Connecting sheets 403 are provided at both ends of the sealing cover sheet 402, and the connecting holes 306 on the same middle cover 3 are connected through the connecting sheets 403, and the connecting holes 306 on different middle covers 3 are connected through the copper sheet 7, so that all the pole groups 5 are connected to form an integral storage battery.

[0037] Embodiment 2:

[0038] The lead-acid battery body in this embodiment is mainly composed of two parts: a bottom tank 1 and a fixed baffle 2. The number of bottom tanks 1 is determined according to the specifications of the lead-acid battery, and the length of the fixed baffle 2 is determined according to the number of bottom tanks 1. There are a total of six bottom tanks 1 used in this embodiment. The fixed baffle 2 is used to gather the separated bottom tanks 1 into a whole. A pole group 5 is arranged inside the bottom tank 1, and the pole group 5 is immersed in the electrolyte. A middle cover 3 is also fixed on the top of the bottom tank 1 to seal the bottom tank 1 to prevent the internal electrolyte from flowing out. A copper sheet 7 is arranged on the cover plate, and the pole group 5 in the bottom tank 1 is connected together by the copper sheet 7 to form a battery pack. A copper sheet cover plate 9 is arranged on the copper sheet 7 to protect the copper sheet 7 from interference from the external environment.

[0039] like Figure 3 and Figure 4As shown, the fixed baffle 2 is a semi-open design. The fixed baffle 2 used in this embodiment is formed by three vertical plates perpendicular to each other, one of which is used as a bottom plate and the other is used as a side plate. Two parallel connecting blocks 104 are respectively arranged on the bottom plate and one of the side plates. The cross section of the connecting block 104 is circular, and the two sides of the connection with the layout are concave inward. A connecting groove 105 is arranged at the bottom of the bottom groove 1 and the side that is in contact with the side of the fixed baffle 2 provided with the connecting block 104, and the shape of the connecting groove 105 matches the shape of the connecting block 104. When the bottom groove 1 is fixed on the fixed baffle 2, the connecting block 104 is embedded in the connecting groove 105 to form a mortise and tenon structure, thereby improving the connection strength between the bottom groove 1 and the fixed baffle 2. At the same time, the arrangement of the connecting block 104 and the connecting groove 105 also facilitates the determination of the installation position during installation, thereby improving the installation efficiency.

[0040] The bottom groove 1 is divided into three different specifications according to the different positions, respectively with the innermost left cell 101, the outermost right cell 103 and the middle cell 102 between the two. Three evenly distributed connection grooves 105 are arranged on the side where the left cell 101 and the middle cell 102 are attached. Three evenly distributed connection blocks 104 are arranged on the side where the middle cell 102 and the left cell 101 are attached, and three evenly distributed connection grooves 105 are arranged on the other side of the middle cell 102. Three evenly distributed connection blocks 104 are arranged on the side where the right cell 103 and the middle cell 102 are connected. In this embodiment, there are six bottom grooves 1, distributed as one left bottom groove 1, four middle bottom grooves 1 and one right bottom groove 1. The bottom grooves 1 are fixed to each other by forming a mortise and tenon structure through the connection grooves 105 and the connection blocks 104.

[0041] like Figure 5 As shown, the pole group 5 is formed by a plurality of positive plates 501 and a plurality of negative plates 502, and the positive plates 501 and the negative plates 502 are staggered and overlapped, so that the positive poles 602 on the positive plates 501 and the negative poles 602 on the negative plates 502 are respectively located in two columns. Both sides of the positive plate 501 are covered by separator paper 503, that is, the positive plate 501 and the negative plate 502 are isolated by the separator paper 503 to prevent the positive plate 501 and the negative plate 502 from affecting each other. The number of negative plates 502 in a cluster is one more than the number of positive plates 501, and both the positive plate 501 and the negative plate 502 are chamfered.

[0042] like Figure 6As shown, the pole group 5 is fixed by a busbar 6. The busbar 6 is metal, conductive, and fixed on the pole lugs of the pole group 5. The two columns of positive and negative pole lugs of each pole group 5 are connected by a busbar 6 respectively. According to the different positions of the pole group 5 in the bottom slot 1, the busbar 6 thereon is also different. The busbar 6 is divided into two types, one is provided with a busbar connection hole 601, and the other is provided with a pole 602. The busbar 6 located in the middle cell 102 only has a busbar 6 with a busbar connection hole 601, and the pole groups 5 in the left cell 101 and the right cell 103 are respectively provided with a busbar 6 with a pole 602. At the same time, the two busbars 6 are respectively provided on the positive pole 602 and the negative pole 602.

[0043] like Figure 7 As shown, the middle cover 3 at the top of the bottom tank 1 also has different specifications according to the different bottom tanks 1, namely the left middle cover 301, the right middle cover 303 and the middle middle cover 302. The settings on the left middle cover 301 are similar to those on the right middle cover 303, but the directions of the settings are opposite, that is, the left middle cover 301 and the right middle cover 303 are spliced ​​together, and they are opposite in shape along the splicing line. The middle middle cover 302 is divided into two specifications due to the different directions of the copper sheet placement groove 304. A connecting hole 306 is provided in the copper sheet placement groove 304, and an opening is provided at the connection of the copper sheet placement groove 304 of adjacent middle covers 3. The connecting screw 8 can connect the bus connection hole 601 on the bus 6 with the copper sheet 7 through the connecting hole 306, so as to lead the current on the internal pole group 5. A liquid injection hole 305 is provided in the middle of the middle cover 3 for injecting electrolyte into the bottom tank 1. A pole hole 307 is also provided on the left middle cover 301 and the right middle cover 303 respectively, for embedding the two-pole pole 602 to connect with the outside.

[0044] like Figure 8 , Fig. 9 and Fig.10 As shown, the groove around the injection hole 305 matches the shape and size of the sealing cover sheet 402 on the cover sheet 4, and the cover sheet 4 is fixed in the groove to seal the injection hole 305. Connecting sheets 403 are provided at both ends of the sealing cover sheet 402, and the connecting holes 306 on the same middle cover 3 are connected through the connecting sheets 403, and the connecting holes 306 on different middle covers 3 are connected through the copper sheet 7, so that all the pole groups 5 are connected to form an integral storage battery.

[0045] An LED voltage display screen 401 is provided on the cover plate, and a voltage detection circuit is provided in the LED voltage display screen 401. The voltage of the corresponding pole group 5 can be detected by the voltage detection circuit, and the voltage value is displayed on the LED voltage display screen 401, so as to conveniently know whether there is a performance problem with the pole group 5.

[0046] When installing, first fix each bottom slot 1 on the fixed baffle 2, and put in the pole group 5. Then cover the cover, inject electrolyte, and fix the copper sheet 7 and cover sheet 4 with the connecting screws 8. Finally, cover the copper sheet cover 9. When in use, if the LED voltage display screen 401 shows abnormal voltage, remove the copper sheet cover 9 on the backward cell, unscrew the connecting screws 8, remove the copper sheet 7 and LED cover 4, separate the fixed baffle 2, and then separate the current cell. Replace the intact cell of the same type and assemble it according to the reverse removal steps.

[0047] The utility model fixes the bottom slot 1 through a semi-open fixed baffle 2, which is convenient for disassembly and installation of the bottom slot 1, thereby facilitating the replacement of the pole group 5 with poor performance; the voltage of the pole group 5 in each bottom slot 1 is detected through the cover plate 4, thereby improving the efficiency of judging the performance of the pole group 5.

[0048] The above embodiments only express several implementation methods of the utility model, and the descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model.

Claims

1. A lead-acid battery with replaceable lagging cells, characterized in that: It includes a fixed baffle, the fixed baffle is connected to a plurality of bottom grooves, and pole groups are fixed in the bottom grooves; The bottom groove is provided with a plurality of connection blocks and connection grooves, and adjacent bottom grooves are connected through the connection blocks and the connection grooves.

2. A replaceable lead-acid battery with a lagging cell according to claim 1, characterized in that: The top of the bottom trough is connected to the middle cover, and adjacent middle covers are connected by copper sheets. The top of the copper sheet is covered with a copper sheet cover plate, and a cover sheet is fixed on the middle cover.

3. A replaceable lead-acid battery with a lagging cell according to claim 2, characterized in that: The cover sheet is provided with a sealing cover sheet, an LED voltage display screen is fixed on the sealing cover sheet, and connecting sheets are respectively provided at both ends of the sealing cover sheet.

4. A lead-acid battery with replaceable lagging cells according to claim 3, characterized in that: The middle covers at both ends are respectively the left middle cover and the right middle cover, the middle cover between the left middle cover and the right middle cover is the middle middle cover, the middle cover is provided with a copper sheet placement groove, and the middle middle cover is divided into two specifications according to the copper sheet placement grooves with openings facing opposite directions.

5. A lead-acid battery with replaceable lagging cells according to claim 4, characterized in that: The copper sheet placement groove is provided with a connecting hole, the middle cover is provided with a liquid injection hole, and the groove at the edge of the liquid injection hole is in contact with the sealing cover sheet.

6. A lead-acid battery with replaceable lagging cells according to claim 1, 2, 3, 4 or 5, characterized in that: The electrode group includes a plurality of positive plates, each of which is wrapped by separator paper, and negative plates are arranged between adjacent positive plates, and the electrodes of the positive plates are interlaced with the electrodes of the negative plates.

7. A lead-acid battery with replaceable lagging cells according to claim 5, characterized in that: The pole group is connected to a bus bar, the bus bar is provided with a bus bar connection hole and a pole, and adjacent bus bars are connected through the bus bar connection hole.

8. A lead-acid battery with replaceable lagging cells according to claim 7, characterized in that: The busbar connection hole is connected to the copper sheet and the connection sheet through the connection hole by using connection screws.

9. A lead-acid battery with replaceable lagging cells according to claim 1, characterized in that: A plurality of connection blocks are arranged on the inner side of the fixed baffle, and the bottom groove and the connection blocks are connected through the connection blocks and the connection grooves.

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