Household energy storage lithium battery module easy to disassemble, assemble and maintain

Abstract

The invention belongs to the technical field of batteries, particularly relates to a household energy storage lithium battery module easy to disassemble, assemble and maintain, and aims to solve the problem that an existing lithium battery is inconvenient to disassemble when needing to be replaced or overhauled, the household energy storage lithium battery module comprises a box body, a battery groove is formed in the top of the box body, and a mounting groove is formed in one side of the box body; a battery groove is formed in the box body, two U-shaped brackets are symmetrically and fixedly mounted on the inner wall of the battery groove, positioning grooves are formed in the tops of the U-shaped brackets, a lifting handle is rotationally connected to the box body, the battery module further comprises a plurality of battery mounting mechanisms, and the battery mounting mechanisms are symmetrically clamped on the two U-shaped brackets. According to the technical scheme, the lithium battery can be conveniently disassembled when the lithium battery needs to be overhauled, and the lithium battery can be conveniently charged and discharged through the arranged charging and discharging mechanism, so that good convenience is achieved in actual use.

Description

Technical Field

[0001] The present invention relates to the field of battery technology, and in particular to a household energy storage lithium battery module that is easy to disassemble, assemble and maintain. Background Art

[0002] Electricity is an energy source that uses electrical energy as a driving force. It is an electricity production and consumption system composed of power generation, transmission, transformation, distribution and power consumption. It converts primary energy in nature into electricity through mechanical energy devices, and then supplies electricity to various users through transmission, transformation and distribution. With the rapid development of my country's economy and the popularization of environmental protection concepts, many families will install home energy storage systems. The purpose is to use lithium batteries to store energy through solar energy or power grids, and use it at night or when the power grid is off, reducing dependence on the power grid. In order to optimize the user experience, a home energy storage lithium battery module that is easy to disassemble and maintain is proposed;

[0003] The service life of lithium batteries used in current household energy storage systems will gradually decline during long-term use. However, as disclosed in announcement number: CN117239295B, a household energy storage lithium battery module that is easy to disassemble and maintain is inconvenient to disassemble the battery when inspecting the battery, which makes it more troublesome to replace the lithium battery. Therefore, we propose a household energy storage lithium battery module that is easy to disassemble and maintain to solve the above-mentioned problems. Summary of the invention

[0004] The purpose of the present invention is to solve the disadvantage in the prior art that lithium batteries are inconvenient to disassemble when they need to be replaced or repaired, and to propose a household energy storage lithium battery module that is easy to disassemble and maintain.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A household energy storage lithium battery module that is easy to disassemble, assemble and maintain, comprises a box body, a battery slot is provided on the top of the box body, and a mounting slot is provided on one side of the box body, two U-shaped brackets are symmetrically fixedly installed on the inner wall of the battery slot, a positioning slot is provided on the top of the U-shaped bracket, and a handle is rotatably connected to the box body. The battery module also comprises:

[0007] Multiple battery mounting mechanisms, wherein the multiple battery mounting mechanisms are symmetrically mounted on two U-shaped brackets, the U-shaped brackets are used to limit the battery mounting mechanisms, and lithium batteries are mounted on the battery mounting mechanisms;

[0008] A power connection mechanism is installed in the battery slot, the power connection mechanism is electrically connected to the plurality of battery mounting mechanisms, and one side of the power connection mechanism extends into the mounting slot;

[0009] The charging and discharging mechanism is installed in the installation slot, the charging and discharging mechanism is electrically connected to the power connection mechanism, and the charging and discharging mechanism is used to charge multiple lithium batteries and output the electricity on the lithium batteries.

[0010] In one possible design, the battery mounting mechanism includes a battery bracket, two handles are symmetrically fixedly installed on the top of the battery bracket, a heat exchange bracket is fixedly installed in the battery bracket, the lithium battery is clamped in the battery bracket, the heat exchange bracket is used to support the lithium battery and dissipate the heat generated when the lithium battery is working, and a U-shaped clip is fixedly installed on the bottom of the battery bracket, and the bottom of the U-shaped clip extends into the positioning groove and is clamped with the inner wall of the positioning groove.

[0011] In a possible design, two heat exchange plates are symmetrically fixedly installed in the U-shaped bracket, and the heat exchange plates are corrugated plates, and the heat exchange plates are in contact with the corresponding heat exchange brackets.

[0012] In a possible design, two first power connection plates are symmetrically fixedly installed on the inner wall of one side of the battery bracket, and the sides of the two first power connection plates close to each other are electrically connected to the same metal transmission bar, and one side of the metal transmission bar is electrically connected to a power connection pole, one end of the power connection pole extends into the battery slot and is fixedly connected to a power connection ring, and the power connection ring is electrically plugged into the power connection mechanism, and one side of the lithium battery is symmetrically electrically connected to two second power connection plates, and a charging module and a discharging module are provided in the lithium battery, and the charging module and the discharging module are electrically connected to the two second power connection plates respectively, and the second power connection plates are electrically in contact with the corresponding first power connection plates.

[0013] In a possible design, the power connection mechanism includes a fixing frame fixedly installed in the battery slot, a power connection board is fixedly installed in the fixing frame, a plurality of conductive rods are symmetrically fixedly installed on the top of the power connection board, the top ends of the plurality of conductive rods all penetrate the fixing frame and extend to the top of the fixing frame, the conductive rods are fixedly connected to the fixing frame, the conductive rods penetrate corresponding power connection plug rings and are electrically connected to the power connection plug rings, an L-shaped power transmission board is electrically connected to the bottom of the power connection board, one side of the L-shaped power transmission board extends into the installation slot and is connected to the charging and discharging mechanism.

[0014] In a possible design, the charging and discharging mechanism includes a side cover plate fixedly installed at the opening of the mounting groove, a wire is fixedly installed through the side cover plate, a plug is fixedly installed at one end of the wire, and a rectifier is electrically connected to the other end of the wire. The rectifier is fixedly installed on the bottom inner wall of the mounting groove, and a second resistor is electrically connected to the rectifier. The second resistor is used to block the direct current output by the lithium battery to the wire, the cathode of the second resistor is electrically connected to the L-shaped transmission board, and the anode of the second resistor is electrically connected to the rectifier.

[0015] In a possible design, the charging and discharging mechanism also includes a plug-in panel fixedly embedded on the side cover plate, and the plug-in panel is electrically connected to an inverter on one side located in the mounting groove, and the inverter is electrically connected to a first resistor, an anode of the first resistor is electrically connected to the L-shaped transmission board, and a cathode of the first resistor is electrically connected to the inverter.

[0016] In a possible design, an upper cover plate is mounted at the opening of the battery slot, and two pressing plates are symmetrically fixedly mounted on the bottom of the upper cover plate, and the pressing plates are in contact with two corresponding battery brackets.

[0017] In the present application, after the lithium battery is placed in the battery bracket, the U-shaped card strip is inserted into the corresponding positioning groove to support and limit the lithium battery, and then the upper cover plate and the battery slot can be clamped together. At this time, the two pressure plates set can press and limit the four battery brackets, so as to prevent the battery bracket from being separated from the U-shaped bracket, so that the lithium battery is in a stable position and will not shake at will, and when the battery bracket is clamped on the U-shaped bracket, the power plug ring can be plugged into the corresponding conductive rod, so when the electric energy stored in the lithium battery is output, it can be transmitted to the first resistor through the conductive column, the power plug ring, the conductive rod, the power board, and the L-shaped transmission board, and the current passing through the first resistor can be transmitted to the inverter, so that the DC power can be output. Converted into alternating current, and then after connecting the household appliances to the power panel, the household appliances can be powered. When charging is needed, the plug can be inserted into the external line board, and the alternating current can be transmitted to the rectifier through the wire. The rectifier converts the alternating current into direct current, and then the rectified direct current can be transmitted to the L-shaped transmission board through the second resistor, and then through the joint board, multiple conductive rods, multiple power plug rings, and multiple conductive columns, multiple lithium batteries can be powered at the same time, so that multiple lithium batteries can be conveniently charged, and when the lithium battery needs to be repaired or replaced, after removing the upper cover, it is only necessary to move the battery bracket out of the U-shaped bracket, so when the lithium battery is repaired, the lithium battery can be conveniently disassembled.

[0018] In the present invention, the household energy storage lithium battery module that is easy to disassemble and maintain can be placed in the battery bracket through the battery installation mechanism. At this time, the U-shaped card strip is inserted into the corresponding positioning groove, so that the lithium battery can be supported and limited. At the same time, when the lithium battery needs to be disassembled, it is only necessary to move the battery bracket out of the U-shaped bracket. Therefore, when the lithium battery is inspected and repaired, the lithium battery can be conveniently disassembled;

[0019] In the present invention, the household energy storage lithium battery module that is easy to disassemble and maintain can be charged or discharged to the lithium battery through the power connection mechanism. At this time, the current can be transmitted through the L-shaped transmission board, the power board and multiple conductive rods, so that the lithium battery can be discharged or charged at the same time;

[0020] In the present invention, the household energy storage lithium battery module that is easy to disassemble and maintain can transmit AC power to the rectifier through the wire after the plug is inserted into the external wire board through the charging and discharging mechanism, and the AC power is converted into DC power by the rectifier. After that, the rectified DC power can be transmitted to the L-shaped transmission board through the second resistor, so that multiple lithium batteries can be charged.

[0021] After the current on the lithium battery is transmitted to the L-shaped transmission board, the DC power can be transmitted to the inverter through the first resistor, which can convert the DC power into AC power and transmit it to the plug-in panel, which can conveniently supply power to electrical appliances in the home.

[0022] The present invention can realize the detachable installation of multiple lithium batteries, so that the lithium batteries can be conveniently disassembled when the lithium batteries need to be repaired. In addition, the charging and discharging mechanism set up in the technical solution can facilitate the charging and discharging of the lithium batteries, so that it has good convenience in actual use. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A three-dimensional schematic diagram of the overall structure of a household energy storage lithium battery module that is easy to disassemble, assemble and maintain, as proposed by the present invention;

[0024] Figure 2 A schematic diagram of the internal structure of a mounting slot of a household energy storage lithium battery module that is easy to disassemble, assemble and maintain, as proposed by the present invention;

[0025] Figure 3 A three-dimensional schematic diagram of a separation structure of a box and a cover plate of a household energy storage lithium battery module that is easy to disassemble and maintain, as proposed by the present invention;

[0026] Figure 4 A top-down three-dimensional schematic diagram of a household energy storage lithium battery module that is easy to disassemble, assemble and maintain, including multiple battery brackets, an L-shaped power transmission board, an inverter and a rectifier connection structure;

[0027] Figure 5 A bottom-up three-dimensional schematic diagram of a plurality of battery brackets, an L-shaped transmission board, an inverter and a rectifier connection structure of a household energy storage lithium battery module that is easy to disassemble, assemble and maintain, proposed by the present invention;

[0028] Figure 6A three-dimensional schematic diagram of a U-shaped bracket, two battery brackets and two lithium battery separation structures of a household energy storage lithium battery module that is easy to disassemble, assemble and maintain, proposed by the present invention;

[0029] Figure 7 A three-dimensional schematic diagram of a battery bracket and a lithium battery separation structure of a household energy storage lithium battery module that is easy to disassemble, assemble and maintain, proposed by the present invention;

[0030] Figure 8 A three-dimensional schematic diagram of the lithium battery structure of a household energy storage lithium battery module that is easy to disassemble, assemble and maintain, as proposed by the present invention;

[0031] Fig. 9 A three-dimensional schematic diagram from another perspective of a connection structure of multiple battery brackets, an L-shaped transmission board, an inverter and a rectifier of a household energy storage lithium battery module that is easy to disassemble, assemble and maintain proposed by the present invention.

[0032] In the figure: 1. box body; 2. battery slot; 3. upper cover; 4. pressure plate; 5. U-shaped bracket; 6. battery bracket; 7. U-shaped card strip; 8. heat exchange plate; 9. heat exchange bracket; 10. first power board; 11. metal transmission bar; 12. power plug ring; 13. handle; 14. fixing frame; 15. positioning groove; 16. conductive rod; 17. L-shaped transmission board; 18. power board; 19. installation groove; 20. first resistor; 21. second resistor; 22. inverter; 23. rectifier; 24. plug panel; 25. wire; 26. lithium battery; 27. second power board; 28. handle; 29. ​​plug; 30. side cover. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0034] Example 1, reference Figure 1-9 A lithium battery module is used in the field of battery technology, including a box body 1, a battery slot 2 is provided on the top of the box body 1, and the battery slot 2 is used to accommodate a lithium battery 26. A mounting slot 19 is provided on one side of the box body 1 for mounting a charging and discharging mechanism. Two U-shaped brackets 5 are symmetrically fixedly installed on the inner wall of the battery slot 2, and a positioning slot 15 is provided on the top of the U-shaped bracket 5. These structures together constitute the basic framework of the lithium battery module.

[0035] Next, make a battery installation mechanism. Each battery installation mechanism includes a battery bracket 6, and two handles 13 are symmetrically fixedly installed on the top of the battery bracket 6 to facilitate carrying and moving. Inside the battery bracket 6, a heat exchange bracket 9 is fixedly installed to support the lithium battery 26 and dissipate the heat generated when the lithium battery 26 is working. The lithium battery 26 is clamped in the battery bracket 6 and fixed and dissipated by the heat exchange bracket 9. A U-shaped clip 7 is fixedly installed at the bottom of the battery bracket 6, and the bottom of the U-shaped clip 7 extends into the positioning groove 15 and is clamped with the inner wall of the positioning groove 15, so that the battery installation mechanism can be fixed on the U-shaped bracket 5, realizing the support and limit of the lithium battery 26.

[0036] In order to further improve the heat dissipation effect, two wave-shaped heat exchange plates 8 are symmetrically fixedly installed in the U-shaped bracket 5, and the heat exchange plates 8 are in contact with the corresponding heat exchange brackets 9. When the lithium battery 26 is working, the heat exchange bracket 9 transfers heat to the heat exchange plate 8. Since the heat exchange plate 8 is a wave-shaped structure, the contact area with the air is increased, which is conducive to the dissipation of heat, so that the lithium battery 26 can be continuously cooled.

[0037] In order to realize the charging and discharging functions of the lithium battery 26, two first power connection plates 10 are symmetrically fixedly installed on the inner wall of one side of the battery bracket 6, and a metal power transmission bar 11 is electrically connected to the side of the two first power connection plates 10 close to each other. One side of the metal power transmission bar 11 is electrically connected to a power connection post, one end of which extends into the battery slot 2 and is fixedly connected to a power connection plug ring 12. Two second power connection plates 27 are symmetrically electrically connected to one side of the lithium battery 26, and a charging module and a discharging module are provided in the lithium battery 26, which are electrically connected to the two second power connection plates 27 respectively. When the lithium battery 26 is placed in the battery bracket 6, the first power connection plate 10 is electrically in contact with the second power connection plate 27. At this time, through the transmission of the metal power transmission bar 11, the power connection post and the power connection plug ring 12, the lithium battery 26 can be conveniently charged, or the lithium battery 26 can transmit current when discharging.

[0038] Next, make a power connection mechanism. The power connection mechanism includes a fixing frame 14 fixedly installed in the battery slot 2, and a power connection board 18 is fixedly installed in the fixing frame 14. A plurality of conductive rods 16 are symmetrically fixedly installed on the top of the power connection board 18, and the top ends of the plurality of conductive rods 16 all penetrate the fixing frame 14 and extend to the top of the fixing frame 14, and the conductive rods 16 are fixedly connected to the fixing frame 14. The conductive rods 16 penetrate the corresponding power connection plug ring 12 and are electrically connected to the power connection plug ring 12. An L-shaped power transmission board 17 is electrically connected to the bottom of the power connection board 18, and one side of the L-shaped power transmission board 17 extends into the installation slot 19 and is connected to the charging and discharging mechanism. When charging or discharging the lithium battery 26, the current can be transmitted through the L-shaped power transmission board 17, the power connection board 18 and the plurality of conductive rods 16, so that the simultaneous charging or discharging of the lithium battery 26 can be achieved.

[0039] Finally, a charging and discharging mechanism is installed in the installation slot 19 , and the charging and discharging mechanism is electrically connected to the power connection mechanism, so as to charge the multiple lithium batteries 26 and output the electricity on the lithium batteries 26 .

[0040] Next, we design the charging and discharging mechanism in detail. At the opening of the mounting groove 19, we fixedly installed a side cover plate 30. On the side cover plate 30, we penetrated and fixedly installed a wire 25. One end of the wire 25 is connected to a plug 29 for plugging into an external power socket. The other end of the wire 25 is electrically connected to the rectifier 23, which is fixedly installed on the bottom inner wall of the mounting groove 19. The function of the rectifier 23 is to convert external alternating current into direct current for charging the lithium battery 26.

[0041] On the rectifier 23, we electrically connect a second resistor 21. The cathode of the second resistor 21 is electrically connected to the L-shaped transmission board 17, while the anode is electrically connected back to the rectifier 23. The main function of the second resistor 21 is to block the direct current output by the lithium battery 26 from flowing directly to the wire 25, ensuring the correct flow of current. When the plug 29 is inserted into the external power socket, the alternating current enters the rectifier 23 through the wire 25, is converted into direct current, and is finally transmitted to the L-shaped transmission board 17 after being regulated by the second resistor 21 to charge the lithium battery 26.

[0042] In addition, the charging and discharging mechanism also includes a plug-in panel 24 fixedly embedded on the side cover 30. The plug-in panel 24 is located on one side of the mounting groove 19 and is electrically connected to the inverter 22. The function of the inverter 22 is to convert direct current into alternating current for use by household appliances. On the inverter 22, we electrically connected a first resistor 20. The anode of the first resistor 20 is electrically connected to the L-shaped transmission board 17, and the cathode returns to be electrically connected to the inverter 22. When the lithium battery 26 is discharged, the direct current enters the first resistor 20 through the L-shaped transmission board 17, is transmitted to the inverter 22 after adjustment, and after being converted into alternating current, is output through the plug-in panel 24 to power household appliances.

[0043] Example 2

[0044] refer to Figure 3 , improved on the basis of Example 1: a household energy storage lithium battery module that is easy to disassemble and maintain. In order to ensure the stability of the lithium battery 26 in the battery slot 2, we clamp an upper cover 3 at the opening of the battery slot 2. Two pressing plates 4 are symmetrically fixedly installed at the bottom of the upper cover 3, and these two pressing plates 4 are in contact with the corresponding two battery brackets 6. When we clamp the upper cover 3 and the battery slot 2, the pressing plate 4 will press and limit the battery bracket 6, thereby preventing the battery bracket 6 from separating from the U-shaped bracket 5, ensuring that the lithium battery 26 is in a stable position and will not shake at will.

[0045] However, as is well known to those skilled in the art, the working principle and wiring method of the lithium battery 26 are commonplace, and are conventional means or common knowledge, and will not be elaborated here. Those skilled in the art may make any selection according to their needs or convenience.

[0046] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A household energy storage lithium battery module that is easy to disassemble, assemble and maintain, comprising a box (1), a battery slot (2) is provided on the top of the box (1), and a mounting slot (19) is provided on one side of the box (1), two U-shaped brackets (5) are symmetrically fixedly installed on the inner wall of the battery slot (2), a positioning slot (15) is provided on the top of the U-shaped bracket (5), and a handle (28) is rotatably connected to the box (1), characterized in that: The battery module also includes: A plurality of battery mounting mechanisms, wherein the plurality of battery mounting mechanisms are symmetrically mounted on two U-shaped brackets (5), the U-shaped brackets (5) are used to limit the position of the battery mounting mechanisms, and lithium batteries (26) are mounted on the battery mounting mechanisms; A power connection mechanism, the power connection mechanism is installed in the battery slot (2), the power connection mechanism is electrically connected to the plurality of battery mounting mechanisms, and one side of the power connection mechanism extends into the mounting slot (19); A charging and discharging mechanism is installed in the installation groove (19), the charging and discharging mechanism is electrically connected to the power connection mechanism, and the charging and discharging mechanism is used to charge the multiple lithium batteries (26) and output the electricity on the lithium batteries (26).

2. A household energy storage lithium battery module that is easy to disassemble and maintain according to claim 1, characterized in that: The battery mounting mechanism comprises a battery bracket (6), two handles (13) are symmetrically fixedly mounted on the top of the battery bracket (6), a heat exchange bracket (9) is fixedly mounted inside the battery bracket (6), a lithium battery (26) is clamped inside the battery bracket (6), the heat exchange bracket (9) is used to support the lithium battery (26) and to dissipate the heat generated when the lithium battery (26) is working, and a U-shaped clamping strip (7) is fixedly mounted on the bottom of the battery bracket (6), the bottom of the U-shaped clamping strip (7) extends into the positioning groove (15) and is clamped with the inner wall of the positioning groove (15).

3. A household energy storage lithium battery module that is easy to disassemble and maintain according to claim 2, characterized in that: Two heat exchange plates (8) are symmetrically fixedly installed in the U-shaped bracket (5), and the heat exchange plates (8) are corrugated plates. The heat exchange plates (8) are in contact with the corresponding heat exchange brackets (9).

4. A household energy storage lithium battery module that is easy to disassemble and maintain according to claim 2, characterized in that: Two first power connection plates (10) are symmetrically fixedly installed on the inner wall of one side of the battery bracket (6); the sides of the two first power connection plates (10) close to each other are electrically connected to the same metal power transmission bar (11); one side of the metal power transmission bar (11) is electrically connected to a power connection pole; one end of the power connection pole extends into the battery slot (2) and is fixedly connected to a power connection plug ring (12); the power connection plug ring (12) is electrically plugged into the power connection mechanism; one side of the lithium battery (26) is symmetrically electrically connected to two second power connection plates (27); a charging module and a discharging module are arranged in the lithium battery (26); the charging module and the discharging module are electrically connected to the two second power connection plates (27) respectively; and the second power connection plates (27) are electrically in contact with the corresponding first power connection plates (10).

5. A household energy storage lithium battery module that is easy to disassemble and maintain according to claim 1, characterized in that: The power connection mechanism comprises a fixing frame (14) fixedly mounted in the battery slot (2), a power connection board (18) fixedly mounted in the fixing frame (14), a plurality of conductive rods (16) symmetrically fixedly mounted on the top of the power connection board (18), the top ends of the plurality of conductive rods (16) all penetrate the fixing frame (14) and extend to the top of the fixing frame (14), the conductive rods (16) are fixedly connected to the fixing frame (14), the conductive rods (16) penetrate the corresponding power connection plug ring (12) and are electrically connected to the power connection plug ring (12), the bottom of the power connection board (18) is electrically connected to an L-shaped power transmission board (17), one side of the L-shaped power transmission board (17) extends into the mounting slot (19) and is connected to the charging and discharging mechanism.

6. A household energy storage lithium battery module that is easy to disassemble and maintain according to claim 1, characterized in that: The charging and discharging mechanism comprises a side cover plate (30) fixedly mounted at the opening of the mounting groove (19); a wire (25) is fixedly mounted through the side cover plate (30); a plug (29) is fixedly mounted at one end of the wire (25); the other end of the wire (25) is electrically connected to a rectifier (23); the rectifier (23) is fixedly mounted on the bottom inner wall of the mounting groove (19); a second resistor (21) is electrically connected to the rectifier (23); the second resistor (21) is used to block the direct current output by the lithium battery (26) from flowing toward the wire (25); the cathode of the second resistor (21) is electrically connected to the L-shaped power transmission board (17); and the anode of the second resistor (21) is electrically connected to the rectifier (23).

7. A household energy storage lithium battery module that is easy to disassemble and maintain according to claim 6, characterized in that: The charging and discharging mechanism further comprises a plug-in panel (24) fixedly embedded in the side cover plate (30); one side of the plug-in panel (24) located in the mounting groove (19) is electrically connected to an inverter (22); the inverter (22) is electrically connected to a first resistor (20); an anode of the first resistor (20) is electrically connected to the L-shaped power transmission board (17); and a cathode of the first resistor (20) is electrically connected to the inverter (22).

8. The household energy storage lithium battery module that is easy to disassemble and maintain according to claim 1, characterized in that: An upper cover plate (3) is clamped at the opening of the battery slot (2), and two pressing plates (4) are symmetrically fixedly mounted on the bottom of the upper cover plate (3), and the pressing plates (4) are in contact with two corresponding battery brackets (6).

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