Combined marine battery packs that can be used in parallel and power supply systems

Abstract

The present invention relates to the technical field of batteries, specifically a combined ship-use battery pack and a power supply system that can be used in parallel, including several battery monomers and a sub-control seat installed on the battery monomers. The battery monomers and the sub-control seat are conductively connected. An L-shaped series connection member is connected and arranged on the sub-control seat, and a conduction contact platform is connected and arranged on the L-shaped series connection member. An insulating bottom frame is fixedly arranged outside the battery monomers. The combined ship-use battery pack of the present invention can be used in parallel. Through the cooperation of the sub-control seat, the switching moving plate, the parallel waiting structure, etc., the battery pack can be quickly switched from a series state to a parallel state, so as to adapt to more complex working conditions.

Description

Technical Field

[0001] The present invention relates to the technical field of batteries, and specifically to a combined ship battery pack and a power supply system that can be used in parallel. Background Art

[0002] There are a large number of motor-driven devices and emergency lighting, communication and other devices on ships. For motor devices, according to the formula Q = RT, it can be known that at the same power, reducing the current can reduce the heating problem. Therefore, the drive of motors often requires high voltage and low current. For devices such as emergency lighting, due to large-scale layout, they are in a parallel state with each other. Therefore, the voltage requirement is very low, and a higher current is required after large-scale parallel layout. Therefore, a power supply with low voltage and high current is needed. For the above, in the traditional technology, only by setting two battery packs, the battery monomers inside one battery pack are connected in series to provide high voltage, and the battery monomers inside the other battery pack are connected in parallel to provide large current to cope with the above situation. In actual work, most of the devices such as emergency lighting are in the off state. Setting two battery packs increases the ship's load, occupies the ship's space, and at the same time increases the equipment layout cost. Summary of the Invention

[0003] The purpose of the present invention is to provide a combined ship battery pack and a power supply system that can be used in parallel to solve the problems raised in the above background art.

[0004] To achieve the above purpose, the present invention provides the following technical solution: A combined ship battery pack that can be used in parallel, including several groups of battery monomers and a sub-control seat installed on the battery monomers. The battery monomers and the sub-control seat are conductively connected. An L-shaped series connection member is connected to the sub-control seat, and a conduction contact platform is connected to the L-shaped series connection member. An insulating bottom frame is fixedly arranged outside the battery monomers, and the L-shaped series connection member and the conduction contact platform are both embedded in the insulating bottom frame;

[0005] A bridge-through slide plate is arranged in the insulating bottom frame. When the bridge-through slide plate is in conductive contact with the conduction contact platform, through the cooperation of the L-shaped series connection member and the bridge-through slide plate, several groups of battery monomers can be connected in series;

[0006] A switching moving plate is arranged above the insulating bottom frame. The bridge-through slide plate is fixedly embedded on the switching moving plate. Through the reciprocating sliding of the switching moving plate, the bridge-through slide plate is driven to be in conductive contact with or separated from the conduction contact platform;

[0007] A parallel waiting structure is arranged outside the switching moving plate. When the switching moving plate drives the bridge-through slide plate to be separated from the conduction contact platform, several groups of battery monomers are connected in parallel through the parallel waiting structure.

[0008] A bottom frame pressing strip is detachably installed above the insulating bottom frame to press and limit the switching moving plate.

[0009] The parallel waiting structure specifically includes a wing support plate and a fixed sleeve body, and the switching moving plate, the wing support plate and the fixed sleeve body are integrally and fixedly arranged.

[0010] An embedded guide rod is fixedly inserted on the fixed sleeve body, a parallel insertion piece is fixedly arranged on the embedded guide rod, a parallel slot is formed on the sub-control seat, the parallel insertion piece and the parallel slot correspond to each other, and after the switching moving plate drives the bridge through slide plate to separate from the conduction contact platform, the parallel insertion piece will be inserted into the parallel slot to achieve conduction contact.

[0011] A spring-back groove is formed in the parallel insertion piece, and a braided conductive band is conductively connected and arranged on the embedded guide rod;

[0012] The embedded guide rod is conductively connected to another corresponding sub-control seat through the braided conductive band, so that when the parallel insertion piece is inserted into the parallel slot, the same polarity of the battery cells is conductively connected to achieve parallel connection.

[0013] A telescopic controller is fixedly arranged on the insulating chassis, a telescopic plate is arranged in the telescopic controller, and the telescopic plate is controlled to perform telescopic movement through the telescopic controller.

[0014] Plate-side teeth and a locking V-groove are formed on the telescopic plate, a mating V-projection is arranged in the locking V-groove, and the telescopic plate is limited by the cooperation of the mating V-projection and the locking V-groove, so that the telescopic plate can drive the switching moving plate to move synchronously when telescoping.

[0015] An elastic connecting rod is arranged above the switching moving plate, a fixed insertion pin is embedded and installed at one end of the elastic connecting rod, the elastic connecting rod is fixedly installed with the switching moving plate through the fixed insertion pin, and the other end of the elastic connecting rod is fixedly installed with the mating V-projection;

[0016] When the mating V-projection is extruded from the locking V-groove, the mating V-projection will apply a pressure to the elastic connecting rod, causing the elastic connecting rod to bend elastically.

[0017] A gear position pin hole is formed on the surface of the switching moving plate, an adjusting press pin is inserted in the gear position pin hole, the elastic connecting rod is blocked and supported by the adjusting press pin, and by changing the position of the adjusting press pin, the bending position of the elastic connecting rod when being pressed by the mating V-projection can be changed.

[0018] A fixed embedded shaft is fixedly arranged on the switching moving plate, a bottom gear disc and a secondary gear disc are rotatably sleeved outside the fixed embedded shaft, the bottom gear disc and the secondary gear disc are coaxially and fixedly installed, and the diameter of the bottom gear disc is larger than that of the secondary gear disc.

[0019] An external rack is fixedly arranged on the chassis pressing strip, and the external rack meshes with the secondary gear disc;

[0020] When the mating V-protrusion is in the locking V-groove, the side teeth of the plate do not contact the bottom gear disk. After the telescopic plate extends and the mating V-protrusion disengages from the locking V-groove, the side teeth of the plate will contact and engage with the bottom gear disk.

[0021] An elastic contact piece is provided on the lower surface of the bridge-through slide plate, and the bridge-through slide plate is in elastic extrusion conduction contact with the conduction contact platform through the elastic contact piece.

[0022] A power supply system includes a combined marine battery pack that can be used in parallel and a line switching relay. The connection circuit of the combined marine battery pack that can be used in parallel is changed through the line switching relay.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] The combined marine battery pack of the present invention that can be used in parallel, through the cooperation of the set sub-control seat, switching moving plate, and parallel waiting structure, etc., enables the battery pack to quickly switch from a series state to a parallel state, so as to adapt to more complex working conditions. For example, in the normal state of the ship, the battery pack is in series to provide high voltage for driving equipment such as motors. In case of an emergency, the battery pack switches to the parallel state to provide low voltage and large current power supply, and can supply power to a large-scale low-voltage emergency lighting equipment.

[0025] Through the cooperation of the set telescopic plate, mating V-protrusion, secondary gear disk, external rack and other structures, when the switching moving plate does not get stuck during the pushing movement, the telescopic plate directly drives the switching moving plate to ensure the switching speed; and when the switching moving plate gets stuck during the pushing movement, the structure can be used to greatly increase the driving force on the switching moving plate by reducing the switching speed, so as to reduce the probability of jamming; through the cooperation of the above structures, the switching speed can be ensured during normal use, and the driving force can be taken into account during jamming to reduce the jamming probability. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0027] Figure 2 It is a schematic diagram of the overall structure of the present invention from another angle.

[0028] Figure 3 For Figure 2 The enlarged schematic diagram of area A in

[0029] Figure 4 For Figure 2 The enlarged schematic diagram of area B in

[0030] Figure 5 It is a top view of the overall structure of the present invention.

[0031] Figure 6 This is a three-dimensional semi-sectional view of the horizontal angle at the L-shaped series connection part of the present invention.

[0032] Figure 7 This is an explosion diagram of the present invention.

[0033] Figure 8 It is Figure 7 An enlarged view of area C in

[0034] Figure 9 It is Figure 7 An enlarged view of area D in

[0035] Figure 10 This is an explosion diagram of the present invention from another angle.

[0036] Figure 11 It is Figure 10 An enlarged view of area E in

[0037] In the figure: 1, battery cell; 2, sub-control seat; 3, L-shaped series connection part; 4, conduction contact platform; 5, insulating chassis; 6, bridging slide plate; 7, switching moving plate; 8, chassis pressing strip; 701, flank support plate; 702, fixed sleeve body; 703, embedded guide rod; 704, parallel inserting piece; 705, rebounding groove; 706, braided conductive belt; 707, parallel inserting slot; 501, telescopic controller; 502, telescopic plate; 503, side teeth of the plate; 504, locking V-groove; 505, mating V-projection; 506, elastic connecting rod; 507, fixed pin; 508, gear position pin hole; 509, adjusting pressing pin; 510, fixed embedded shaft; 511, bottom gear disc; 512, secondary gear disc; 513, external rack; 601, elastic contact piece; 101, electrode projection; 102, projection screw hole; 201, positioning bottom groove; 202, seat body screw; 203, head and tail external connection groove. Detailed implementation manners

[0038] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0039] Please refer to Figures 1 to 11 , the present invention provides a technical solution: a combined ship battery pack that can be used in parallel, such as Figure 7As shown in the figure, it includes several groups of battery cells 1 and a sub-control base 2 installed on the battery cells 1. The battery cells 1 and the sub-control base 2 are conductively connected. An L-shaped series component 3 is connected and arranged on the sub-control base 2, and a conduction contact platform 4 is connected and arranged on the L-shaped series component 3. An insulating base frame 5 is fixedly arranged outside the battery cells 1. Both the L-shaped series component 3 and the conduction contact platform 4 are embedded and installed in the insulating base frame 5.

[0040] A bridging slide plate 6 is arranged in the insulating base frame 5. When the bridging slide plate 6 is in conductive contact with the conduction contact platform 4, through the cooperation of the L-shaped series component 3 and the bridging slide plate 6, several groups of battery cells 1 can be connected in series; above the insulating base frame 5, a switching moving plate 7 is arranged. The bridging slide plate 6 is embedded and fixed on the switching moving plate 7. Through the reciprocating sliding of the switching moving plate 7, the bridging slide plate 6 is driven to be in conductive contact with or separated from the conduction contact platform 4; an external parallel waiting structure is arranged on the switching moving plate 7. After the switching moving plate 7 drives the bridging slide plate 6 to be separated from the conduction contact platform 4, several groups of battery cells 1 are connected in parallel through the parallel waiting structure.

[0041] A base frame pressing strip 8 is detachably installed above the insulating base frame 5. The switching moving plate 7 is pressed and limited by the base frame pressing strip 8. As Figure 2 shown in the figure, the base frame pressing strip 8 and the insulating base frame 5 are detachably and fixedly installed through screws. The switching moving plate 7, the base frame pressing strip 8, and the insulating base frame 5 are all made of plastic insulating materials. The sub-control base 2, the L-shaped series component 3, the conduction contact platform 4, and the bridging slide plate 6 are all made of metal conductors.

[0042] The parallel waiting structure specifically includes a wing-shaped support plate 701 and a fixed sleeve 702. The wing-shaped support plate 701 and the fixed sleeve 702 are made of insulating materials. The switching moving plate 7, the wing-shaped support plate 701, and the fixed sleeve 702 are integrally and fixedly arranged.

[0043] An embedded guide rod 703 is fixedly inserted on the fixed sleeve 702, and a parallel insertion piece 704 is fixedly arranged on the embedded guide rod 703. A parallel slot 707 is opened on the sub-control base 2. The parallel insertion piece 704 and the parallel slot 707 correspond to each other. After the switching moving plate 7 drives the bridging slide plate 6 to be separated from the conduction contact platform 4, the parallel insertion piece 704 will be inserted into the parallel slot 707 to achieve conductive contact.

[0044] A spring-back groove 705 is opened in the parallel insertion piece 704, and a braided conductive band 706 is conductively connected and arranged on the embedded guide rod 703; the embedded guide rod 703, the parallel insertion piece 704, and the braided conductive band 706 are all made of metal conductors.

[0045] The embedded guide rod 703 is conductively connected to another corresponding sub-control base 2 through the braided conductive band 706, so that when the parallel insertion piece 704 is inserted into the parallel slot 707, the same polarity of the battery cells 1 is conductively connected to achieve parallel connection.

[0046] A telescopic controller 501 is fixedly arranged on the insulating chassis 5. A telescopic plate 502 is arranged in the telescopic controller 501. The telescopic movement of the telescopic plate 502 is controlled by the telescopic controller 501. In one embodiment, the interior of the telescopic controller 501 is composed of structures such as a lead screw, a sliding sleeve, and a motor. The lead screw is driven by the motor to rotate, causing the sliding sleeve to move. The sliding sleeve is fixedly installed with the telescopic plate 502 to achieve synchronous movement. In another embodiment, the interior of the telescopic controller 501 is composed of structures such as an electromagnet, a spring, and a magnetic attraction plate, and is controlled using the electromagnetic principle.

[0047] The telescopic plate 502 is provided with plate side teeth 503 and a locking V-groove 504. A mating V-projection 505 is arranged in the locking V-groove 504. The telescopic plate 502 is limited by the cooperation of the mating V-projection 505 and the locking V-groove 504, so that the telescopic movement of the telescopic plate 502 can drive the switching moving plate 7 to move synchronously.

[0048] An elastic connecting rod 506 is arranged above the switching moving plate 7. A fixed pin 507 is embedded and installed at one end of the elastic connecting rod 506. The elastic connecting rod 506 is fixedly installed with the switching moving plate 7 through the fixed pin 507, and the other end of the elastic connecting rod 506 is fixedly installed with the mating V-projection 505; when the mating V-projection 505 is extruded from the locking V-groove 504, the mating V-projection 505 will apply a pressure to the elastic connecting rod 506, causing the elastic connecting rod 506 to bend elastically.

[0049] A gear position pin hole 508 is formed on the surface of the switching moving plate 7. An adjusting press pin 509 is inserted into the gear position pin hole 508. The elastic connecting rod 506 is blocked and supported by the adjusting press pin 509. By changing the position of the adjusting press pin 509, the bending position of the elastic connecting rod 506 when it is subjected to the pressure of the mating V-projection 505 can be changed.

[0050] A fixed embedding shaft 510 is fixedly arranged on the switching moving plate 7. An outer bottom gear 511 and a secondary gear 512 are rotatably sleeved outside the fixed embedding shaft 510. The outer bottom gear 511 and the secondary gear 512 are coaxially and fixedly installed, and the diameter of the outer bottom gear 511 is larger than the diameter of the secondary gear 512.

[0051] An external rack 513 is fixedly arranged on the chassis pressing strip 8. The external rack 513 meshes with the secondary gear 512; when the mating V-projection 505 is stuck in the locking V-groove 504, the plate side teeth 503 and the outer bottom gear 511 do not contact each other. When the telescopic plate 502 extends and the mating V-projection 505 disengages from the locking V-groove 504, the plate side teeth 503 will contact and mesh with the outer bottom gear 511.

[0052] An elastic contact piece 601 is arranged on the lower surface of the bridge-through sliding plate 6. The bridge-through sliding plate 6 is elastically extruded and conductively contacted with the conduction contact platform 4 through the elastic contact piece 601.

[0053] A power supply system includes a combined ship battery pack that can be used in parallel and a line switching relay. The line switching relay is used to change the connection circuit of the combined ship battery pack that can be used in parallel. The line switching relay is composed of a relay and a relay control module, and can realize line switching. It is an existing common technology and will not be described in detail in this application.

[0054] like Figure 7 As shown in , the battery cell 1 is provided with an electrode boss 101 , and each battery cell 1 is provided with two electrode bosses 101 , which correspond to the positive electrode and the negative electrode of the battery cell 1 , respectively. The electrode boss 101 is provided with a boss screw hole 102 .

[0055] like Figure 11 As shown in the figure, a positioning bottom groove 201 is provided on the lower surface of the sub-control seat 2, and the electrode boss 101 is correspondingly stuck in the positioning bottom groove 201. A seat body screw 202 is provided in the sub-control seat 2, and the sub-control seat 2 and the electrode boss 101 are connected and fixedly installed through the spiral cooperation of the seat body screw 202 and the boss screw hole 102.

[0056] like Figure 1 As shown in FIG. 1 , the sub-control seat 2 at the head and tail ends of the battery pack is provided with head and tail external connection slots 203 , respectively, and the external circuit is electrically connected to the battery pack through the head and tail external connection slots 203 .

[0057] The present invention is connected to the external circuit through the line switching relay when in use. Under normal use, the battery pack supplies power to external motor equipment through the line switching relay, such as non-safety motor equipment such as electric lifting seats in ships. At this time, the bridge slide 6 will bridge the contact platform 4, such as Figure 6 As shown in FIG. 1 , the battery pack is connected in series through an L-shaped series connection member 3 and a conductive contact platform 4 to provide a high voltage to equipment such as a motor.

[0058] When the ship enters an emergency state, the line switching relay first disconnects the power supply connection between the battery pack and the motor equipment, and then the telescopic controller 501 is energized to control the telescopic plate 502 to extend, and the telescopic plate 502 drives the switching movable plate 7 to move, so that the bridge slide plate 6 and the conductive contact platform 4 are staggered and separated. At this time, the battery pack is cut off from the series connection, and as the switching movable plate 7 continues to move, as shown in FIG. Figure 4 As shown in the figure, the switching moving plate 7 drives the fixed sleeve 702 and the parallel plug 704 and other structures to move, so that the parallel plug 704 is inserted into the parallel slot 707. At this time, the same polarity of the battery cells 1 are connected to each other, so that several groups of battery cells 1 are in a parallel state. Then the line switching relay controls the battery group to be connected to the large-scale emergency lighting equipment in the ship.

[0059] like Figure 3As shown in the figure, during the process of the telescopic plate 502 driving the switching moving plate 7 to move through telescopic movement, when the switching moving plate 7 and its attached structures are stuck, as the telescopic plate 502 extends, the switching moving plate 7 will not move. Therefore, relative movement will occur between the telescopic plate 502 and the mating V-convex 505. By presetting the thrust required for the mating V-convex 505 to be extruded and disengaged from the locking V-groove 504 to be slightly less than the extension thrust of the telescopic plate 502, when the switching moving plate 7 and its attached structures are stuck, the mating V-convex 505 can be extruded and disengaged from the locking V-groove 504.

[0060] As the telescopic plate 502 continues to extend, the plate-side tooth teeth 503 will contact and engage with the bottom tooth disc 511. By pushing the bottom tooth disc 511 to rotate through the plate-side tooth teeth 503, the secondary tooth disc 512 will rotate. Since the diameter of the bottom tooth disc 511 is larger than that of the secondary tooth disc 512, according to the lever principle, when the secondary tooth disc 512 meshes with the external rack 513, a greater driving force can be generated to drive the switching moving plate 7 to move, so that the switching moving plate 7 is disengaged from jamming.

[0061] When setting the thrust required for the mating V-convex 505 to be extruded and disengaged from the locking V-groove 504, it can be achieved by changing the position of the adjusting pin 509. As Figure 3 shown in the figure, the closer the adjusting pin 509 is to the end where the mating V-convex 505 is located, when the mating V-convex 505 is subjected to the same extrusion force, the more difficult it is for the elastic connecting rod 506 to elastically bend, thus realizing thrust adjustment.

[0062] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A combined marine battery pack that can be used in parallel, comprising a number of battery monomers and a sub-control seat installed on the battery monomers, with the battery monomers and the sub-control seat being electrically connected. It is characterized in that: An L-shaped series connection piece is connected and arranged on the sub-control base. A conduction contact platform is connected and arranged on the L-shaped series connection piece. An insulating base frame is fixedly arranged outside the battery cell. The L-shaped series connection piece and the conduction contact platform are both embedded and installed in the insulating base frame; A bridge-through slide plate is arranged in the insulating base frame. When the bridge-through slide plate is in conduction contact with the conduction contact platform, several groups of battery cells can be connected in series through the cooperation of the L-shaped series connection piece and the bridge-through slide plate; A switching moving plate is arranged above the insulating base frame. The bridge-through slide plate is fixedly embedded on the switching moving plate. Through the reciprocating sliding of the switching moving plate, the bridge-through slide plate is driven to be in conduction contact with or separated from the conduction contact platform; A parallel connection waiting structure is arranged outside the switching moving plate. When the switching moving plate drives the bridge-through slide plate to be separated from the conduction contact platform, several groups of battery cells are connected in parallel through the parallel connection waiting structure; The parallel connection waiting structure specifically includes a side wing support plate and a fixed sleeve body. The switching moving plate, the side wing support plate and the fixed sleeve body are integrally and fixedly arranged; An embedded guide rod is fixedly inserted on the fixed sleeve body. A parallel connection insert piece is fixedly arranged on the embedded guide rod. A parallel connection slot is opened on the sub-control base. The parallel connection insert piece and the parallel connection slot correspond to each other. When the switching moving plate drives the bridge-through slide plate to be separated from the conduction contact platform, the parallel connection insert piece will be inserted into the parallel connection slot to achieve conduction contact.

2. The combined marine battery pack that can be used in parallel according to claim 1, wherein: A base frame pressing strip is detachably installed above the insulating base frame. The switching moving plate is pressed and limited by the base frame pressing strip.

3. The combined marine battery pack that can be used in parallel according to claim 1, wherein: A rebound groove is opened in the parallel connection insert piece. A braided conductive band is conductively connected and arranged on the embedded guide rod; The embedded guide rod is conductively connected to another corresponding sub-control base through the braided conductive band, so that when the parallel connection insert piece is inserted into the parallel connection slot, the same polarity of the battery cells is conductively connected to achieve parallel connection.

4. The combined marine battery pack that can be used in parallel according to claim 2, characterized in that: A telescopic controller is fixedly arranged on the insulating base frame. A telescopic plate is arranged in the telescopic controller. The telescopic controller controls the telescopic movement of the telescopic plate.

5. The combined marine battery pack that can be used in parallel according to claim 4, wherein: The telescopic plate is provided with side teeth and a locking V-groove. A matching V-projection is arranged in the locking V-groove. The telescopic plate is limited by the cooperation of the matching V-projection and the locking V-groove, so that when the telescopic plate moves telescopically, it can drive the switching moving plate to move synchronously.

6. The combined marine battery pack that can be used in parallel according to claim 5, wherein: An elastic connecting rod is arranged above the switching moving plate. A fixed insertion pin is embedded and installed at one end of the elastic connecting rod. The elastic connecting rod is fixedly installed with the switching moving plate through the fixed insertion pin. The other end of the elastic connecting rod is fixedly installed with the matching V-projection; When the matching V-projection is extruded from the locking V-groove, the matching V-projection will apply pressure to the elastic connecting rod, causing the elastic connecting rod to bend elastically.

7. The combined marine battery pack that can be used in parallel according to claim 6, characterized in that: A gear position pin hole is opened on the surface of the switching moving plate. An adjusting pressing pin is inserted into the gear position pin hole. The elastic connecting rod is blocked and supported by the adjusting pressing pin. By changing the position of the adjusting pressing pin, the bending position of the elastic connecting rod when it is pressed by the matching V-projection can be changed.

8. The combined marine battery pack capable of being used in parallel according to claim 7, characterized in that: A fixed embedded shaft is fixedly arranged on the switching moving plate. A bottom gear disk and a secondary gear disk are rotatably sleeved outside the fixed embedded shaft. The bottom gear disk and the secondary gear disk are coaxially and fixedly installed. The diameter of the bottom gear disk is larger than that of the secondary gear disk.

9. The combined marine battery pack that can be used in parallel according to claim 8, characterized in that: An external rack is fixedly arranged on the underframe pressing strip, and the external rack meshes with the secondary gear disc. When the mating V protrusion is stuck in the locking V groove, the side teeth of the plate do not contact the bottom gear disc. When the telescopic plate extends and the mating V protrusion disengages from the locking V groove, the side teeth of the plate will contact and mesh with the bottom gear disc.

10. The combined marine battery pack that can be used in parallel according to claim 1, characterized in that: An elastic contact piece is arranged on the lower surface of the bridge-through slide plate, and the bridge-through slide plate is in elastic extrusion conduction contact with the conduction contact platform through the elastic contact piece.

11. A power supply system, characterized in that, It includes the combined marine battery pack that can be used in parallel as described in any one of claims 1-10 and a line switching relay, and the connection circuit of the combined marine battery pack that can be used in parallel is changed through the line switching relay.

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