CN202957336U - Modular battery - Google Patents

Abstract

The utility model aims to provide a can reduce the defective rate by a wide margin, shorten the module battery in production man-hour. The technical means is as follows: the battery management system comprises a battery shell, an electric storage device, a monitoring circuit board for monitoring the voltage and the temperature of each storage battery, a metal conducting layer group with the thickness larger than that of a printed circuit of the monitoring circuit board, a positive pole pile head, a negative pole pile head and a battery management system; the monitoring circuit board also comprises a reset button which restarts the battery management system to force each storage battery to continue to supply power when the storage capacity of each storage battery of the battery management system is too low and the battery management system judges and stops supplying power; and a cover plate which can cover the safety relief valve to prevent the monitoring circuit board from being corroded by leaked battery liquid is arranged between the electric power storage device and the monitoring circuit board.

Description

Modular battery

technical field

The utility model relates to a modular battery.

Background technique

The deteriorating global warming phenomenon and the oil crisis in recent years have forced human beings to seek energy-saving and environmentally friendly alternative energy sources. At this stage, the development of high-power lithium battery applications is the most important part of the current environmental protection and energy-saving fields.

Lithium batteries currently on the market, whether they are electric vehicles, electric locomotives, hand tools, or even 3C digital products [such as laptops], most of the lithium batteries used are composed of multiple batteries combined with battery management. composed of systems.

Among them, the battery management system [Battery Management System; referred to as BMS], the necessary functions are "detection of the status of each battery cell" and "control current output/power off".

Because of this, there will be a considerable number of power lines, temperature detection lines and voltage detection lines between the battery cell and the battery management system.

Therefore, the difficulty and cost of assembly are increased, and the defect rate is high. Any error in any contact will cause functional failure, or damage to the battery management system and battery.

In the process of assembly and consumer application, it is more likely that due to the vibration of the battery, the wires will rub against each other, short circuit, interference, open circuit, or the connector will be loose, resulting in poor contact and damage, and various abnormal states are prone to occur. Therefore, Existing lithium batteries have a need for improvement.

In view of this, how to provide a battery with low assembly difficulty, low cost, low defect rate, high battery reliability, and further shortened production man-hours has become the object of the utility model to be improved.

Utility model content

The purpose of the utility model is to provide a modularized battery which can greatly reduce the defective rate and shorten the production working hours.

In order to solve the above problems and achieve the purpose of the utility model, the technical means of the utility model is realized in this way, which is a modular battery, including:

a battery case with an accommodating space;

A set of electric storage devices arranged in the accommodating space, including a plurality of storage batteries with positive and negative batteries at one end, and a safety pressure relief valve, arranged in a plane arrangement at the power supply end;

A monitoring circuit board installed in the accommodating space, on the top side of the storage device, covering the storage device, and capable of monitoring the voltage and temperature of each storage battery;

One group is located in the accommodating space, located at the top side of the monitoring circuit board, and is electrically connected to each storage battery. layer group;

One is connected to the positive output terminal, and one end protrudes from the positive pole head of the battery case;

One is connected to the negative output terminal, and one end protrudes from the negative pole head of the battery case; and

a battery management system installed in the accommodating space and electrically connected to the monitoring circuit board;

The monitoring circuit board also includes a device for restarting the battery management system to force each battery to continue to supply power when the battery management system determines that the storage capacity of each battery is too low and the battery management system stops supplying power. reset button;

A cover plate capable of covering the safety pressure relief valve to prevent the monitoring circuit board from being corroded by leaked battery fluid is also provided between the electrical storage device and the monitoring circuit board.

According to the above modularized battery, the battery management system is co-structured and arranged on the monitoring circuit board;

The monitoring circuit board is one of the following: a double-layer printed circuit board and a multi-layer printed circuit board.

According to the above modularized battery, the battery management system is a battery management circuit board arranged outside the monitoring circuit board;

The battery management circuit board is electrically connected to the monitoring circuit board through one of the following methods: communication slot, flat cable;

The monitoring circuit board is one of the following: a double-layer printed circuit board and a multi-layer printed circuit board.

According to the above-mentioned modularized battery, the metal conductive layer group is electrically connected to the electrical storage device in one of the following ways: series connection, parallel connection, series plus parallel connection;

The metal conductive layer group includes a positive metal conductive layer corresponding to the positive output terminal and connected to the positive pile head; and

A negative metal conductive layer corresponding to the negative output terminal and connected to the negative pile head;

When the metal conductive layer group is electrically connected to the electrical storage device in series, it also includes at least one serial metal conductive layer;

When the metal conductive layer group is electrically connected to the electrical storage device in parallel, it also includes at least one parallel metal conductive layer;

When the metal conductive layer group is electrically connected to the electrical storage device through series and parallel connection, it also includes at least one series metal conductive layer and a parallel metal conductive layer;

The metal conductive layer group is electrically connected to each storage battery by means of screw connection.

According to the above-mentioned modularized battery, several switch units are further provided at the input end of the metal conductive layer of the negative electrode, and the switch units are one of the following or a combination thereof: Mosfet, relay.

According to the above-mentioned modularized battery, a spring is respectively provided between the metal conductive layer group and the screw connection of each storage battery;

The metal conductive layer group is fixed on the monitoring circuit board in one of the following ways: clamping, pasting, vapor deposition, sputtering;

The metal conductive layer group is one of the following layer groups: copper sheet conductive layer group, nickel-plated copper conductive layer group, tin-plated copper conductive layer group, nickel-plated iron conductive layer group, nickel sheet conductive layer group.

According to the above-mentioned modular battery, the monitoring circuit board is further provided with a voltage sensing circuit, a set of power supply circuits, and a temperature sensing unit with one end corresponding to each storage battery;

The temperature sensing unit is electrically connected to the monitoring circuit board in one of the following ways: co-constructed on the monitoring circuit board, and electrically connected to the monitoring circuit board through a signal line.

According to the above-mentioned modularized battery, the bottom end surface of the cover plate is also provided with a baffle extending into each storage battery for strengthening and supporting each storage battery;

At the top surface of the cover plate, corresponding to the positive and negative cells of each storage battery, there is also a polarity marking diagram for foolproofing;

The top surface of the positive and negative electrode cells is also provided with a polarity marking part that can be used for polarity identification, and the surface of the positive electrode cell is also coated with a polarity marking coating that can be used for polarity identification. .

According to the above-mentioned modular battery, the top surface of the battery case is also pivotally provided with a T-shaped handle that can be switched between the state of being perpendicular to the surface of the battery case and being flat against the surface of the battery case. ;

Both ends of the pivot joint of the handle are respectively provided with a pivot joint clamped on the top surface of the battery case;

The pivot joints of the handle are further equipped with the pivot joint blocks, which are deviated from the axis of the handle, and can force the handle when the handle is perpendicular to the surface of the battery case. A shaft that automatically turns into a state of being attached to the surface of the battery case.

According to the above-mentioned modular battery, the handle is further provided with a first matching portion on a side surface adjacent to the battery case;

The battery case, corresponding to the first matching portion, is also provided with a second matching portion capable of matching with the first matching portion to avoid short circuit caused by water;

The first matching part is one of the following structures: a raised line, a groove;

The second matching portion is one of the following structures to correspond to the aforementioned first matching portion: protruding strips and grooves.

Compared with the prior art, the utility model has the beneficial effects of:

1. In the overall cost of traditional lithium batteries, the battery cost accounts for 74% of the overall cost, and the assembly cost accounts for 26% of the overall cost. Among them, the battery cost is the part that is difficult to reduce. Only the assembly cost can be controlled artificially. Through the cooperation of the monitoring circuit board, the metal conductive layer group and the battery management system in the utility model, not only the wire part in the lithium battery is completely exempted, but also many signal detection lines are integrated on the monitoring circuit board to reduce the assembly cost , more effectively solve the problem of product reliability, and the application of the metal conductive layer group can more effectively solve the problem that the printed circuit board cannot withstand large current continuous discharge, making the utility model specific industrial applicability.

2. In the utility model, through the application of the reset button, when the consumer needs urgently and wants to obtain electricity, the reset button can be used to force the battery management system to restart, without considering the service life of each battery, The power reserved by each storage battery is fully released for use by consumers.

3. In the utility model, through the use of the cover plate, the leaked battery liquid is effectively prevented from corroding the monitoring circuit board, so as to prolong the service life of the utility model and reduce the overall failure rate.

4. In the utility model, according to the difference of battery application types, such as: power battery, or starting battery, or battery for 3C products, according to the size of the monitoring circuit board, the battery management system and the monitoring circuit board can be co-configured, or The battery management system is directly arranged outside the monitoring circuit board, which is convenient for operators to apply and effectively expands the application range of the utility model.

5. In the utility model, the polarity marking diagram, the polarity marking part, and the polarity marking coating are combined to solve the problem that the polarity is easily installed incorrectly during assembly, and effectively reduce the defective assembly rate.

Description of drawings

Figure 1: A three-dimensional schematic diagram of the modular battery of the present invention.

Figure 2: Schematic diagram of the decomposition of the modularized battery of the present invention.

Figure 3: is a partially exploded schematic diagram of Figure 2.

Figure 4: I-I sectional schematic diagram of the modularized battery of the present invention.

Figure 5: An exploded schematic view of the modularized battery of the present invention when used with another metal conductive layer group.

Figure 6: An exploded schematic view of the utility model when the modular batteries are implemented in parallel.

Fig. 7: The implementation schematic diagram of the section II-II of the utility model when the modular battery handle is applied.

Fig. 8: A three-dimensional cross-sectional schematic diagram of the utility model when the modular battery handle is used in conjunction with the second matching part.

Fig. 9: A three-dimensional schematic diagram of the application of the modular battery of the present invention in combination with another handle and the second matching part.

Figure 10: A three-dimensional implementation schematic diagram of the modular battery of the present invention when a reset button is applied.

Fig. 11: A three-dimensional schematic diagram of another embodiment of the modularized battery of the present invention.

Fig. 12: An exploded schematic diagram of another embodiment of the modularized battery of the present invention.

FIG. 13 is a partially exploded schematic view of FIG. 12 .

Fig. 14: A schematic sectional view of III-III of another embodiment of the modularized battery of the present invention.

Fig. 15: An exploded schematic view of another embodiment of the modular battery of the present invention when it is connected to the battery management system in another way.

Symbol Description:

1 battery shell 44 parallel metal conductive layer

11 accommodation space 45 switch unit

12 Second matching part 46 Spring

2 Power storage device 5 Pole head

21 Battery 6 Negative pile head

211 pole cell 7 battery management system

212 negative battery cell 71 battery management circuit board

213 safety relief valve 8 cover plate

214 polarity marking part 81 baffle

215 Polarity marking coating 82 Polarity marking diagram

3 Monitoring circuit board 9 Communication slot

31 reset button 10 flat cable

32 voltage sensing circuit 20 carrying handle

33 Temperature sensing circuit 201 First coordination part

4 Metal conductive layer group 30 Pivot block

41 Positive metal conductive layer 40 Shaft

42 Negative metal conductive layer A pole output terminal

43 Series metal conductive layer B Negative output terminal

Detailed ways

According to the embodiment shown in the drawings, the detailed description is as follows:

As shown in Figure 1, it is a three-dimensional schematic diagram of the modular battery of the present invention, as shown in Figure 2, it is a schematic diagram of the decomposition of the modular battery of the present invention, as shown in Figure 3, it is a schematic diagram of partial decomposition of Figure 2, as shown in Figure 4 Shown is the I-I sectional schematic diagram of the modularized battery of the present utility model, as shown in Figure 5 is the exploded schematic diagram of the modularized battery of the present utility model with another metal conductive layer group, as shown in Figure 10 The three-dimensional implementation diagram of the utility model modular battery when the reset button is applied, as shown in Figure 11 is a perspective schematic diagram of another embodiment of the utility model modular battery, as shown in Figure 12 is the utility model modularization The exploded schematic diagram of another embodiment of the battery, as shown in Figure 13 is a partially exploded schematic diagram of Figure 12, and Figure 14 is a schematic diagram of the section III-III of another embodiment of the modularized battery of the present invention, as shown in Figure 15 is an exploded view of another embodiment of the modular battery of the present invention when it is connected to the battery management system in another way.

It is revealed in the drawing that a modular battery includes:

A battery case 1 with an accommodating space 11;

A set of electric storage devices 2 arranged in the accommodating space 11, including a plurality of batteries 21 with positive and negative battery cells 211, 212 and a safety pressure relief valve 213 at one end, arranged in a plane arrangement at the power supply end;

A monitoring circuit board 3 provided in the accommodating space 11, located on the top side of the power storage device 2, covering the power storage device 2, and capable of monitoring the voltage and temperature of each storage battery 21;

One group is located in the accommodating space 11, is located at the top side of the monitoring circuit board 3, and is electrically connected to each storage battery 21. The thickness is greater than the thickness of the printed circuit of the monitoring circuit board 3, and has a positive output terminal A and a The metal conductive layer group 4 of the negative output terminal B;

One is connected to the positive output terminal A, and one end protrudes from the positive pole head 5 of the battery case 1;

One is connected to the negative output terminal B, and one end protrudes from the negative pole head 6 of the battery case 1; and

A battery management system 7 provided in the accommodating space 11 and electrically connected to the monitoring circuit board 3;

The monitoring circuit board 3 also includes a function to restart the battery management system 7 to force A reset button 31 for each storage battery 21 to continue to supply power;

Between the electrical storage device 2 and the monitoring circuit board 3 , there is also a cover plate 8 that can cover the safety pressure relief valve 213 to prevent the monitoring circuit board 3 from being corroded by leaked battery fluid.

Among them, through the cooperation of the monitoring circuit board 3, the metal conductive layer group 4 and the battery management system 7 in the present invention, the interference and cost of the wire part are avoided, the assembly cost is reduced, and the problem of product reliability is effectively solved.

Secondly, through the use of the metal conductive layer group 4, the problem that the printed circuit board cannot withstand continuous discharge of large current is solved, so that the utility model has industrial applicability.

Furthermore, the application of the reset button 31 allows the utility model to have the function of emergency applications. When consumers are in a hurry, they will not be unable to obtain power due to the battery protection mechanism. Regardless of the service life of each storage battery 21 On the premise, the power reserved by each storage battery 21 is fully released for use by consumers.

On the other hand, generally for the sake of safety, the battery 21 is equipped with a safety pressure relief valve 213, which can relieve the internal pressure of the battery 21 and avoid explosion accidents, but the leaked battery liquid will inevitably corrode the circuit board and shorten the service life. Therefore, for the sake of safety and service life, the utility model blocks the leaked battery fluid through the use of the cover plate 8, so as to avoid erosion to the monitoring circuit board 3, so as to prolong the service life of the utility model and reduce the overall failure Rate.

In the above, the battery management system 7 is co-configured on the monitoring circuit board 3 .

Wherein, when the monitoring circuit board 3 is large enough, and there is no need to worry about magnetic wave interference or insufficient current tolerance, the battery management system 7 and the monitoring circuit board 3 can be co-configured to reduce the use space and make the utility model more convenient. Modularization, while reducing the time-consuming and cost of production and assembly.

In the above, the battery management system 7 is a battery management circuit board 71 arranged outside the monitoring circuit board 3;

The battery management circuit board 71 is electrically connected to the monitoring circuit board 3 through one of the following methods: a communication slot 9 and a flat cable 10 .

Among them, when the accommodating space 11 of the battery case 1 is too small, the monitoring circuit board 3 is bound to become smaller, which is prone to problems such as magnetic wave interference or insufficient current tolerance. Therefore, the battery management system 7 cannot be co-configured with the monitoring circuit. board 3, so it is necessary to move part of the functions outside the premise of not affecting the overall function through the setting method of the battery management circuit board 71.

Secondly, through the different connection methods of the communication slot 9 or the flat cable 10 , the industry can choose an appropriate connection method to obtain the best application.

In the above, the monitoring circuit board 3 is one of the following: a double-layer printed circuit board and a multi-layer printed circuit board.

Among them, according to different circuit application requirements, the length of the printed circuit will be different. Therefore, different printed circuit boards should be used to meet different requirements, so that the monitoring circuit board 3 can operate normally.

In the above, the metal conductive layer group 4 is electrically connected to the electrical storage device 2 in one of the following ways: series connection, parallel connection, series plus parallel connection;

The metal conductive layer group 4 includes a positive metal conductive layer 41 corresponding to the positive output terminal A and connected to the positive pole head 5; and

A negative metal conductive layer 42 corresponding to the negative output terminal B and connected to the negative pile head 6;

When the metal conductive layer group 4 is electrically connected to the electrical storage device 2 in series, it also includes at least one series metal conductive layer 43;

When the metal conductive layer group 4 is electrically connected to the electrical storage device 2 in parallel, it also includes at least one parallel metal conductive layer 44;

When the metal conductive layer group 4 is electrically connected to the electrical storage device 2 through series and parallel connection, it also includes at least one series metal conductive layer 43 and a parallel metal conductive layer 44;

The metal conductive layer group 4 is electrically connected to each storage battery 21 by means of screw connection.

In the above, several switching units 45 are provided at the input end of the negative metal conductive layer 42, and the switching units 45 are one of the following or a combination thereof: Mosfet, relay.

Among them, in response to different battery needs, the metal conductive layer group 4 can be flexibly adjusted, so that the industry can freely select and use it.

Secondly, the metal conductive layer group 4 can be stably matched with each storage battery 21 by means of screw connection.

Furthermore, through the use of the switch unit 45, the battery management system 7 can use the switch unit 45 to control whether to supply power or not, so that the utility model can operate normally.

FIG. 6 is an exploded schematic diagram of the utility model when the modular batteries are implemented in parallel. It is disclosed in the figure that the metal conductive layer group 4 is electrically connected with the electrical storage device 2 in parallel.

Among them, the metal conductive layer group 4 can not only be applied in series, but can also be safely applied to batteries with a parallel structure because of the characteristics of current resistance, which is beneficial to expand the application range of the present invention.

In the above, a spring 46 is also provided between the screw joints of the metal conductive layer group 4 and each storage battery 21;

The metal conductive layer group 4 is fixed on the monitoring circuit board 3 in one of the following ways: clamping, sticking, evaporation, sputtering;

The metal conductive layer group 4 is one of the following layer groups: copper sheet conductive layer group, nickel-plated copper conductive layer group, tin-plated copper conductive layer group, nickel-plated iron conductive layer group, nickel sheet conductive layer group.

Wherein, through the addition of the spring 46, the screw connections between the positive and negative battery cells 211, 212 and the metal conductive layer group 4 are less likely to be loosened due to vibration, and the safety is higher.

Secondly, according to different designs of the monitoring circuit board 3 , different fixing methods of the metal conductive layer group 4 are used, so that the monitoring circuit board 3 can withstand a larger current.

Furthermore, due to the influence of the application range, the power requirements are different, so there will be different application requirements for the metal conductive layer group 4, which must be changed according to the needs. For example, the metal conductive layer group 4 of the power battery and the starting battery is better. The best choice is the copper sheet conductive layer group, and the metal conductive layer group 4 of the 3C battery, the better choice is the nickel-plated copper conductive layer group, or the tin-plated copper conductive layer group, or the nickel-plated iron conductive layer group, or It is the conductive layer of nickel sheet.

In the above, the monitoring circuit board 3 is also provided with a voltage sensing circuit 32 with one end corresponding to each storage battery 21, a set of power supply circuits 33, and a temperature sensing unit [not shown in the figure];

The temperature sensing unit is electrically connected to the monitoring circuit board 3 in one of the following ways: co-constructed on the monitoring circuit board 3 and electrically connected to the monitoring circuit board 3 through a signal line.

Among them, the printed circuit is used to replace the traditional signal detection line, thereby avoiding the intertwining of the wires, causing problems such as short circuit and open circuit.

Secondly, disposing the voltage sensing circuit 32 and the power supply circuit 33 on the monitoring circuit board 3 also reduces the installation difficulty of the monitoring circuit board 3, improves the overall yield, and improves the maintenance convenience of the present invention.

Furthermore, the temperature sensing unit can be installed in different ways according to the requirements, and compared with the traditional lithium battery, the application flexibility is greater.

In the above, at the bottom end surface of the cover plate 8, there is also a baffle plate 81 extending into each storage battery 21 for strengthening and supporting each storage battery 21;

At the top surface of the cover plate 8, corresponding to the positive and negative battery cells 211 and 212 of each storage battery 21, there is also a polarity marking diagram 82 for foolproofing;

The top end surfaces of the positive and negative electric cores 211, 212 are also provided with a polarity marking part 214 which can be used for polarity identification, and the surface of the positive electric core 211 is also coated with a pole which can be used for polarity identification. Sex marking coating 215.

Wherein, through the use of the baffle plate 81, the storage batteries 21 will not collide due to vibration, which is more stable.

Secondly, through the cooperation of the polarity marking diagram 82, the polarity marking part 214, and the polarity marking coating 215, when the utility model is assembled, if the battery or the circuit board is damaged due to wrong polarity installation, Reduce to a minimum and effectively maintain the quality of the product.

As shown in Figure 7, it is a schematic diagram of the II-II cross-sectional implementation of the utility model when the modular battery handle is used, and Figure 8 is a three-dimensional view of the utility model when the modular battery handle is used in conjunction with the second matching part. The cross-sectional schematic diagram, as shown in Figure 9, is a three-dimensional implementation schematic diagram of the utility model when the modular battery is used with another kind of handle and the second matching part.

It is revealed in the figure that on the top surface of the battery case 1, there is also a pivotally provided T-shaped lifter that can be switched between the state of being perpendicular to the surface of the battery case 1 and being flat against the surface of the battery case 1. Put 20;

Both ends of the pivot joint of the handle 20 are respectively provided with a pivot joint block 30 clamped on the top surface of the battery case 1;

The pivot joint of the handle 20 is also equipped with the pivot joint blocks 30 that can be matched with each other, deviate from the axis of the handle 20, and can be positioned when the handle 20 is perpendicular to the surface of the battery case 1 A shaft 40 that forces the handle 20 to automatically turn into a state of being flat against the surface of the battery case 1 .

Wherein, through the setting method of the carrying handle 20, the carrying handle 20 cannot stand upright for a long time, and can automatically return to the original position, so as to prevent consumers from forgetting to return the carrying handle 20 to the original position after using the carrying handle 20. This causes the problem of being pushed against the shelter, so that consumers can use the utility model with more peace of mind and ease.

In the above, the handle 20 is further provided with a first matching portion 201 on one side of the battery case 1 adjacent to it;

The battery case 1, which corresponds to the first matching portion 201, is also provided with a second matching portion 12 capable of matching with the first matching portion 201 to avoid short circuit caused by water;

The first mating portion 201 is one of the following structures: convex strips, grooves;

The second matching portion 12 has one of the following structures to correspond to the aforementioned first matching portion 201 : protruding lines and grooves.

Wherein, through the cooperation of the first matching part 201 and the second matching part 12, the positive pole head 5 and the negative pole head 6 are separated, effectively preventing water or other liquids from flowing through the top surface of the battery case 1, and separating the two. Or conduction, causing a short circuit, or even damage to the battery.

Secondly, according to the application requirements, the first matching part 201 can be used in a convex line or a groove, and the second matching part 12 is corresponding to the first matching part 201. When the first matching part 201 is a convex The bar and the second fitting part 12 are grooves; when the first fitting part 201 is a groove, the second fitting part 12 is a raised bar.

It can be known from this that the utility model solves at one stroke through the cooperation of the monitoring circuit board 3, the metal conductive layer group 4 and the battery management system 7. Too many wires in the lithium battery, high assembly costs and defective rates, and printed circuit boards The problem of not being able to withstand continuous discharge of large currents, and at the same time, the reset button 31 is used to provide an emergency power supply function, and the cover plate 8 is used to prolong the service life of the utility model. Compared with today's traditional lithium batteries, it is more industrial Usability, efficacy and practicality.

The structure, features and effects of the present utility model have been described in detail above based on the embodiments shown in the drawings. The above descriptions are only preferred embodiments of the present utility model, but the utility model does not limit the scope of implementation as shown in the drawings. , all changes made according to the idea of the utility model, or modifications to equivalent embodiments that are equivalent to changes, and still within the spirit covered by the description and illustrations, shall be within the protection scope of the utility model.

Claims (10)

1. A modular battery, characterized in that it comprises: A battery case (1) with an accommodating space (11); A group is arranged in the accommodating space (11), including a plurality of battery cells (21) with positive and negative battery cells (211, 212) and safety pressure relief valves (213) at one end, and arranged in a plane with power supply ends power storage device (2); One is set in the accommodating space (11), located on the top side of the storage device (2), covers the storage device (2), and can be used for monitoring the voltage and temperature of each storage battery (21) Monitoring circuit board (3); One group is arranged in the accommodation space (11), is located at the top side of the monitoring circuit board (3), and is electrically connected to each storage battery (21), and has a thickness greater than the printed circuit thickness of the monitoring circuit board (3), A metal conductive layer group (4) having a positive output terminal (A) and a negative output terminal (B); One is connected to the positive output terminal (A), and one end protrudes from the positive pole head (5) of the battery case (1); One is connected to the negative output terminal (B), and one end protrudes from the negative pole head (6) of the battery case (1); and a battery management system (7) installed in the accommodation space (11) and electrically connected to the monitoring circuit board (3); The monitoring circuit board (3) also includes a function to restart the battery management system (7) when the storage capacity of each storage battery (21) is too low and the battery management system (7) judges and stops supplying power. The battery management system (7), the reset button (31) to force each storage battery (21) to continue to supply power; Between the power storage device (2) and the monitoring circuit board (3), there is also a cover that can cover the safety pressure relief valve (213) to prevent the monitoring circuit board (3) from being corroded by leaked battery fluid plate (8). 2. The modular battery according to claim 1, characterized in that: the battery management system (7) is co-structured and arranged on the monitoring circuit board (3); The monitoring circuit board (3) is one of the following: a double-layer printed circuit board and a multi-layer printed circuit board. 3. The modular battery according to claim 1, characterized in that: the battery management system (7) is a battery management circuit board (71) arranged outside the monitoring circuit board (3); The battery management circuit board (71) is electrically connected to the monitoring circuit board (3) through one of the following methods: communication slot (9), flat cable (10); The monitoring circuit board (3) is one of the following: a double-layer printed circuit board and a multi-layer printed circuit board. 4. The modular battery according to claim 1, characterized in that: the metal conductive layer group (4) is electrically connected to the power storage device (2) in one of the following ways: series connection, parallel connection, series plus parallel; The metal conductive layer group (4) includes a positive metal conductive layer (41) corresponding to the positive output terminal (A) and connected to the positive pole head (5); and A negative metal conductive layer (42) corresponding to the negative output terminal (B) and connected to the negative pole head (6); When the metal conductive layer group (4) is electrically connected to the electrical storage device (2) in series, it further includes at least one series metal conductive layer (43); When the metal conductive layer group (4) is electrically connected to the electrical storage device (2) in parallel, it also includes at least one parallel metal conductive layer (44); When the metal conductive layer group (4) is electrically connected to the electrical storage device (2) through series and parallel connection, it also includes at least one series metal conductive layer (43) and parallel metal conductive layer (44) ; The metal conductive layer group (4) is electrically connected to each storage battery (21) by means of screw connection. 5. The modular battery according to claim 4, characterized in that: at the input end of the negative metal conductive layer (42), several switch units (45) are also provided, and the switch unit (45) One or a combination of the following: Mosfet, Relay. 6. The modular battery according to claim 4, characterized in that: a spring (46) is respectively provided between the metal conductive layer group (4) and the screw connection of each storage battery (21); The metal conductive layer group (4) is fixed on the monitoring circuit board (3) in one of the following ways: clamping, sticking, evaporation, sputtering; The metal conductive layer group (4) is one of the following layer groups: copper sheet conductive layer group, nickel-plated copper conductive layer group, tin-plated copper conductive layer group, nickel-plated iron conductive layer group, nickel sheet conductive layer group. 7. The modularized battery according to claim 1, characterized in that: the monitoring circuit board (3) is also provided with a voltage sensing circuit (32) and a voltage sensing circuit (32) with one end corresponding to each battery (21), respectively A power supply circuit (33), a temperature sensing unit; The temperature sensing unit is electrically connected to the monitoring circuit board (3) in one of the following ways: co-constructed on the monitoring circuit board (3), and electrically connected to the monitoring circuit board (3) through a signal line. 8. The modularized battery according to claim 1, characterized in that: at the bottom end surface of the cover plate (8), there is also a set extending into each storage battery (21) for strengthening and supporting each storage battery (21). Used baffle (81); At the top surface of the cover plate (8), corresponding to the positive and negative battery cells (211, 212) of each storage battery (21), there is also a polarity marking diagram (82) for foolproofing; The top end surfaces of the positive and negative electric cores (211, 212) are also provided with a polarity marking part (214) which can be used for polarity identification, and the surface of the positive electric core (211) is also coated with a A polarity marking coating (215) for polarity identification. 9. The modularized battery according to claim 1, characterized in that: at the top surface of the battery case (1), there is also a pivoting device that can be perpendicular to the surface of the battery case (1) and be attached flat to the surface of the battery case (1). A T-shaped handle (20) for switching between states on the surface of the battery case (1); two ends of the pivot joint of the handle (20) are respectively provided with a clamping joint connected to the battery case (1) ) the pivot block (30) at the top surface; The pivot joint of the handle (20) is also provided with a joint that can cooperate with each of the pivot blocks (30), deviate from the axis of the handle (20), and be vertical to the handle (20). When on the surface of the battery case (1), the handle (20) is forced to automatically turn to a shaft (40) in a state of being attached to the surface of the battery case (1). 10. The modular battery according to claim 9, characterized in that: the handle (20), which is adjacent to one side of the battery case (1), is also provided with a first matching part (201 ); The battery case (1), which corresponds to the first matching portion (201), is also provided with a second matching portion capable of matching with the first matching portion (201) to avoid short circuit problems caused by water. part (12); The first matching part (201) is one of the following structures: convex strips, grooves; The second fitting part (12) has one of the following structures to correspond to the aforementioned first fitting part (201): convex strips and grooves.

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