Finished lithium battery module convenient for voltage detection and equalization

Abstract

The utility model belongs to the technical field of lithium battery assembly finished products, and discloses a finished lithium battery module convenient for voltage detection and equalization. The finished lithium battery module comprises a battery box, a lithium battery pack is arranged at the bottom in the battery box and is formed by connecting a plurality of lithium batteries in series and parallel; a mounting plate is detachably mounted in the battery box, and the mounting plate is positioned above the lithium battery pack; an integrated socket is mounted above the mounting plate, the positive and negative electrodes of the plurality of lithium batteries are respectively connected with a connecting wire, the other ends of the plurality of connecting wires penetrate through the mounting plate and are respectively connected with the positive and negative access ends of the integrated socket in a one-to-one correspondence manner, and the detection end of the voltage balance detector is connected with a balance detection plug; and the balance detection plug and the integrated socket are matched in shape and can be correspondingly plugged. The finished lithium battery module can be directly connected with a voltage balance detector through the connection integrated plug, so that the convenience of voltage detection and balance is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to lithium battery assembly finished product technical field more specifically relates to a finished product lithium battery module convenient to voltage detection and equalization. BACKGROUND

[0002] At present, the core of finished product lithium battery module is lithium battery core, and according to the different use requirement scenes, a finished product lithium battery module needs to connect multiple lithium battery cores in different numbers in series and parallel, and needs to be connected by laser or other ways, and a series of processing such as shock absorption, waterproofing and fixing needs to be carried out in the periphery to complete a finished product.

[0003] However, during the series use of lithium battery, due to individual differences, temperature differences and other reasons, the battery end voltage is unbalanced. In order to solve this problem, the energy difference between each battery monomer in the battery pack needs to be reduced by equalization technology to improve the consistency of the battery pack. The main function of equalization is to consume or transfer the power of the monomer battery that is fully charged in advance during charging and discharging, so that other monomers that have not been fully charged or emptied can continue to charge, thereby ensuring that the whole battery pack can be fully charged. In the prior art, a voltage equalization detector is usually used to detect and equalize the lithium battery pack. By monitoring and equalizing each battery core in the battery pack, battery damage caused by overcharging or overdischarging can be avoided, thereby improving the safety of the battery. However, when using the instrument, the finished battery module usually needs to be disassembled and then connected to the positive and negative poles of each battery to complete the connection, which is time-consuming and laborious, and increases the working cost of detecting and voltage equalizing the lithium battery pack.

[0004] Therefore, how to realize the detection and voltage equalization of finished product lithium battery module without disassembly is a problem that needs to be solved by those skilled in the art. UTILITY MODEL CONTENTS

[0005] Therefore, the utility model provides a finished product lithium battery module convenient to voltage detection and equalization, which is connected to the detection end of the voltage equalization detector to detect and equalize voltage by reserving a maintenance opening, reserving a lead wire and a plug from the positive and negative levels of each battery, and connecting the plug of the voltage equalization detector with the reserved plug to complete the equalization detection process.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] A finished product lithium battery module convenient to voltage detection and equalization can be connected to the detection end of the voltage equalization detector to detect and equalize voltage, comprising:

[0008] A battery box is provided with a box cover on the top end;

[0009] A lithium battery group is placed at the bottom of the battery box, and the lithium battery group is composed of a plurality of lithium batteries connected in series and in parallel;

[0010] A mounting plate is detachably mounted inside the battery box and above the lithium battery group;

[0011] An integrated socket is mounted above the mounting plate, the positive and negative poles of the plurality of lithium batteries are respectively connected with a connecting wire, the other end of the plurality of connecting wires is respectively connected with the positive and negative access ends of the integrated socket through the mounting plate, and the detection end of the voltage equalization detector is connected with an equalization detection plug which is adaptively connected with the integrated socket.

[0012] Compared with the prior art, the utility model discloses a finished lithium battery module convenient for voltage detection and equalization, and the lithium battery group is composed of a plurality of lithium batteries connected in series and in parallel.

[0013] Further, the plug-in end of the integrated socket is provided with a socket groove, the socket groove is fixed with a socket protrusion, a plurality of positive and negative jack groups are arranged on the socket protrusion, and the positive and negative access ends of the plurality of positive and negative jack groups are respectively connected with the positive and negative poles of the plurality of connecting wires.

[0014] The beneficial effects of the above technical scheme are that the plurality of jacks on the integrated socket are arranged in an array, the access ends of the plurality of jacks are connected with the plurality of connecting wires, and the equalization control of each single battery in the lithium battery group is realized.

[0015] Further, the equalization detection plug is provided with a plug-in groove on one side end face, a plurality of plug-in columns are arranged in an array in the plug-in groove from the groove bottom to the groove opening direction, the socket protrusion can be embedded into the plug-in groove, the circumferential groove wall of the plug-in groove can be embedded into the socket groove, and the plurality of plug-in columns are correspondingly plugged into the plurality of jacks.

[0016] The beneficial effect of the above technical scheme is that the design of the plug-in slot and the plug-in column can realize quick and stable connection and disconnection, which is convenient for the operator to balance the detection of the quick plug-in and plug-out between the plug and the integrated socket; the array arrangement of the plug-in column and the plug hole corresponding plug-in can ensure that each connection point has good electrical contact, reduce the possibility of poor contact, and improve the reliability of the entire system.

[0017] Further, the lithium battery pack is provided with a lithium battery pack positive electrode connector and a lithium battery pack negative electrode connector connected in series by a plurality of positive electrodes and negative electrodes of the lithium battery on one side of the top end.

[0018] The beneficial effect of the above technical scheme is that the positive electrodes and negative electrodes of the plurality of lithium batteries are connected in series, which can simplify the external connection of the battery pack and make the wiring of the battery pack more simple and intuitive.

[0019] Further, the lithium battery pack is provided with a lithium battery pack positive electrode connector and a lithium battery pack negative electrode connector connected in series by a plurality of positive electrodes and negative electrodes of the lithium battery on one side of the top end.

[0020] The beneficial effect of the above technical scheme is that by designing the connection point at the top end of the box cover, direct contact with the inside of the battery during maintenance or operation can be reduced, and the risk of short circuit or misoperation can be reduced.

[0021] Further, the lithium battery pack is provided with a lithium battery pack positive electrode connector and a lithium battery pack negative electrode connector connected in series by a plurality of positive electrodes and negative electrodes of the lithium battery on one side of the top end.

[0022] The beneficial effect of the above technical scheme is that the lithium battery pack protection board can provide overcharge protection, overdischarge protection, overcurrent protection, short circuit protection and temperature protection, which can prevent the lithium battery from being damaged under abnormal conditions, thereby protecting the battery and the user safety; the relay provides electrical isolation, which can provide isolation between the control signal and the controlled circuit, so that the current between different circuits does not affect each other, thereby enhancing the stability and safety of the system; through the cooperation of the protection board and the relay, the charging and discharging state of the battery can be effectively monitored and managed, the battery overcharge and overdischarge can be prevented, and the service life of the battery can be prolonged.

[0023] Further, the lithium battery pack protection board further comprises a plurality of voltage detection interfaces and voltage access plugs, the voltage detection interfaces are divided into positive access ends and negative access ends, the voltage access plugs are divided into voltage positive access plugs and voltage negative access plugs, the positive poles of the plurality of lithium batteries are respectively connected to the access ends of the voltage positive access plugs through wires, and the negative poles are respectively connected to the access ends of the voltage negative access plugs through wires, and the positive access ends and the negative access ends are respectively plugged with the positive access ends and the negative access ends.

[0024] The beneficial effects of the above technical scheme are that: through the plurality of voltage detection interfaces, the voltage of the lithium battery pack can be accurately monitored, ensuring that the battery pack works within a safe voltage range; and the voltage detection interfaces can be used to monitor the voltage difference between the batteries, providing necessary data support for battery equalization, ensuring that the voltages of the batteries in the battery pack are balanced, and improving the overall performance of the battery pack.

[0025] Further, the lithium battery pack protection board further comprises a display screen output port, and the top end of the box cover is provided with a display screen connecting column, and the bottom end of the display screen connecting column penetrates through the box cover and is connected with the display screen output port.

[0026] Further, a voltage display is further included, and the voltage display can be connected with the display screen connecting column.

[0027] The beneficial effects of the above technical scheme are that: the voltage display can directly display the voltage information of the battery pack, providing intuitive and real-time battery state data for the user, preventing overcharging or overdischarging, and improving the safety of battery use. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description only constitute the embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of the provided drawings.

[0029] Figure 1 A three-dimensional structural schematic view of the battery box is provided.

[0030] Figure 2 A three-dimensional structural schematic view of the battery box is provided.

[0031] Figure 3 A three-dimensional structural schematic view of the battery box is provided. Figure 2 A local enlarged schematic view of part A.

[0032] Figure 4The utility model provides a three -dimensional structure schematic diagram of lithium battery group.

[0033] Figure 5 The utility model provides a three -dimensional structure schematic diagram of battery box and voltage equalization detector connection.

[0034] Figure 6 The utility model provides a three -dimensional structure schematic diagram of equalization detection plug.

[0035] 1-battery box, 2-box cover, 21-lithium battery group total positive pole connector, 22-lithium battery group total negative pole connector, 23-display screen connecting electric column, 3-lithium battery group, 31-lithium battery, 32-lithium battery group positive pole connector, 33-lithium battery group negative pole connector, 34-connecting wire, 4-mounting plate, 5-integrated socket, 51-socket groove, 52-socket protruding block, 53-jack, 6-voltage equalization detector, 61-equalization detection plug, 611-plug groove, 612-plug column, 7-lithium battery group protection plate, 71-negative pole input end, 72-relay connection end, 73-voltage detection interface, 74-display screen output port, 75-voltage access plug, 8-voltage display screen. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model and not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the utility model.

[0037] The utility model discloses a kind of finished lithium battery module convenient for voltage detection and equalization, it can be connected with the detection end of voltage equalization detector 6 to carry out voltage equalization detection, including battery box 1, battery box 1 top opening and cover with box cover 2;Lithium battery group 3 is placed in the bottom of battery box 1, lithium battery group 3 is composed of multiple lithium batteries 31 in series and parallel connection;Detachable mounting plate 4 is detachably installed in battery box 1, and mounting plate 4 is above lithium battery group 3;Integrated socket 5 is installed above mounting plate 4, and the positive and negative pole of multiple lithium batteries 31 is respectively connected with one connecting wire 34, and the other end of multiple connecting wires 34 is all passed through mounting plate 4 and is respectively connected with the positive and negative access end of integrated socket 5 one-to-one corresponding, and the detection end of voltage equalization detector 6 is connected with equalization detection plug 61, and equalization detection plug 61 is shape adaptation with integrated socket 5 and can be corresponding plug-in.

[0038] Specifically, the voltage balancing detector 6 is a device for detecting and balancing the voltage of each battery cell in the battery pack to ensure the performance and life of the battery pack, and the lithium battery module balancing maintenance instrument with the model AE3511 is specifically selected in the utility model, which is simple to operate, accurate in detection data, can be connected with the series interface through a plurality of wires, and is correspondingly integrated and connected to the balancing detection plug 61, and can be directly connected with the integrated socket 5 through the balancing detection plug 61.

[0039] In an embodiment of the integrated socket 5 in the utility model, the plug-in end of the integrated socket 5 is provided with a socket groove 51, the socket groove 51 is fixedly provided with a socket protrusion 52, a plurality of positive and negative jack groups 53 are arrayed on the socket protrusion 52, and the positive and negative access ends of the plurality of positive and negative jack groups 53 are connected with a plurality of connection wires 34 in one-to-one correspondence. Through the arrayed arrangement of the plurality of jacks on the integrated socket 5, the access ends of the plurality of jacks can be connected with the plurality of connection wires in correspondence, so that the balancing control of each single battery in the lithium battery pack 3 can be realized.

[0040] In an embodiment of the balancing detection plug 61 in the utility model, the balancing detection plug 61 is provided with a plug-in groove 611 on one side end face, a plurality of plug-in columns 612 are arrayed in the plug-in groove 611 along the direction from the groove bottom to the groove opening, the socket protrusion 52 can be embedded into the plug-in groove 611, the circumferential groove wall of the plug-in groove 611 can be embedded into the socket groove 51, and the plurality of plug-in columns 612 are correspondingly plugged into the plurality of jacks. Through the design of the plug-in groove 51 and the plug-in column 612, quick and stable connection and disconnection can be realized, the plug-in and pull-out of the balancing detection plug 61 and the integrated socket 5 can be conveniently operated by the operator, the plug-in column 612 and the jack are correspondingly plugged in the arrayed arrangement, the electrical contact of each connection point can be ensured, the possibility of poor contact can be reduced, and the reliability of the whole system can be improved.

[0041] Specifically, the integrated plug 5 is detachably installed on the mounting plate 4, in specific use, can be arranged inside the box body, or can be detached and placed outside the box body, so as to be connected with the balancing detection plug 61, and the shape of the integrated plug 5 and the balancing detection plug 61 corresponds and is not limited to square, round or other shapes.

[0042] In an embodiment of the lithium battery pack 3 in the utility model, the lithium battery pack 3 is provided with a lithium battery pack positive electrode connector 32 and a lithium battery pack negative electrode connector 33 at one side top end, and the positive electrode and the negative electrode of a plurality of lithium batteries 31 are respectively connected in series. By connecting the positive electrode and the negative electrode of the plurality of lithium batteries 31 in series, the external connection of the battery pack can be simplified, and the wiring of the battery pack is more simple and intuitive.

[0043] In the above embodiment, the box cover 2 is provided with a lithium battery group total positive electrode connector 21 and a lithium battery group total negative electrode connector 22 which can be connected with external devices, the bottom end of the lithium battery group total positive electrode connector 21 penetrates through the box cover 2 and is connected with the lithium battery group positive electrode connector 32, and the bottom end of the lithium battery group total negative electrode connector 22 penetrates through the box cover 2 and is connected with the lithium battery group negative electrode connector 33. By designing the connection point at the top end of the box cover, direct contact with the inside of the battery during maintenance or operation can be reduced, and the risk of short circuit or misoperation can be reduced.

[0044] In the above embodiment, the lithium battery group total negative electrode connector 22 is further connected in series with a lithium battery group protection plate 7 and a relay between the lithium battery group negative electrode connector 33, the lithium battery group protection plate 7 is installed above the mounting plate 4, the relay is arranged below the mounting plate 4, the lithium battery group protection plate 7 is provided with a negative electrode input end 71 and a relay connection end 72, the negative electrode input end 71 is connected with the lithium battery group negative electrode connector 33, the relay connection end 72 is connected with the input end of the relay, and the output end of the relay is connected with the lithium battery group total negative electrode connector 22. The lithium battery group protection plate 7 can provide overcharge protection, overdischarge protection, overcurrent protection, short circuit protection and temperature protection, which can prevent the lithium battery 31 from being damaged under abnormal conditions, thereby protecting the battery and the user safety; the relay provides electrical isolation, which can provide isolation between the control signal and the controlled circuit, so that the current between different circuits does not affect each other, thereby enhancing the stability and safety of the system; through the cooperation of the protection plate and the relay, the charging and discharging state of the battery can be effectively monitored and managed, the overcharge and overdischarge of the battery can be prevented, and the service life of the battery can be prolonged.

[0045] Specifically, the main function of the lithium battery group protection plate 7 is to protect the lithium battery group and ensure its safety and stability during charging and discharging. In the present application, the lithium battery group protection plate 7 is specifically selected from the lithium battery group protection plates of the brand of Jihuichuangxin.

[0046] In the above embodiment, the lithium battery group protection plate 7 further comprises a voltage detection interface 73 and a voltage access plug 75, the voltage detection interface 73 is divided into a positive electrode access end and a negative electrode access end, the voltage access plug 75 is divided into a voltage positive electrode access plug and a voltage negative electrode access plug, the positive electrodes of the plurality of lithium batteries 31 are respectively connected and integrated to the access end of the voltage positive electrode access plug through wires, and the negative electrodes are respectively connected and integrated to the access end of the voltage negative electrode access plug through wires, and the positive electrode access end and the negative electrode access end are respectively plugged with the positive electrode access end and the negative electrode access end. Through the plurality of voltage detection interfaces, the voltage of the lithium battery group can be accurately monitored to ensure that the battery group works within a safe voltage range; and the voltage detection interface can be used to monitor the voltage difference between the batteries to provide necessary data support for battery equalization, ensure the voltage balance of each battery in the battery group, and improve the overall performance of the battery group.

[0047] In the above embodiment, the lithium battery pack protection board 7 further comprises a display output port 74, and a display connecting column 23 is arranged at the top end of the box cover 2, and the bottom end of the display connecting column 23 penetrates through the box cover 2 and is connected with the display output port 74; and the voltage display 8 is arranged on the outer side of the battery box 1 and can be connected with the display connecting column 23. The voltage display can directly display the voltage information of the battery pack, provide intuitive and real-time battery state data for the user, prevent overcharging or overdischarging, and improve the safety of battery use.

[0048] The working principle of the finished lithium battery module convenient for voltage detection and equalization in the utility model is that:

[0049] The utility model discloses a lithium battery box, voltage equalization detection instrument, lithium battery group protection board and voltage display, and the lithium battery group protection board is connected with the voltage equalization detection instrument, and the voltage equalization detection instrument is connected with the voltage display.

[0050] And, the lithium battery group protection board in series connection with the lithium battery group is arranged in the lithium battery box, can play the function of charging and discharging protection to the series-parallel connection battery group, can detect the overvoltage, overcurrent, overtemperature, undervoltage and short circuit state of each single battery in the battery group simultaneously, and shows the working personnel through the detection display, to inform the working personnel the real-time state of the lithium battery group, so that the working personnel can judge whether the lithium battery group needs to be connected with the voltage equalization detection instrument according to the detection result, improves the reliability and maintenance efficiency of the battery system.

[0051] Therefore, the finished lithium battery module is directly connected with the voltage equalization detection instrument through the integrated plug arranged at the lithium battery group, improves the convenience of voltage detection and equalization, and the lithium battery group protection board is arranged to detect the voltage in time, can find the voltage imbalance state in time, and improves the equalization efficiency.

[0052] The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the difference from other embodiments, and the same or similar parts between various embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the related parts refer to the method part.

[0053] The above description of disclosed embodiments enables one of ordinary skill in the art to make or use the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein can be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A finished lithium battery module for facilitating voltage detection and equalization, connectable with a detection end of a voltage equalization detector (6) to perform voltage equalization detection, characterized in that, Include: Battery box (1), the battery box (1) top end opening and cover with box cover (2); Lithium battery pack (3), the lithium battery pack (3) is placed in the bottom of the battery box (1), the lithium battery pack (3) is composed of a plurality of lithium batteries (31) in series and parallel connection; Mounting plate (4), the mounting plate (4) can be detachably mounted inside the battery box (1) and located above the lithium battery pack (3); Integrated socket (5), the integrated socket (5) is installed above the mounting plate (4), a plurality of lithium batteries (31) are connected to a connecting wire (34) respectively, and the other end of a plurality of connecting wires (34) is connected to the positive and negative access end of the integrated socket (5) respectively, and the detection end of the voltage equalization detector (6) is connected with the equalization detection plug (61), the equalization detection plug (61) is matched with the shape of the integrated socket (5) and can be correspondingly plugged.

2. The finished lithium battery module for facilitating voltage detection and equalization of claim 1, wherein, The plug-in end of the integrated socket (5) is provided with a socket slot (51), the socket slot (51) is fixed with a socket protrusion (52), a plurality of positive and negative jack groups (53) are arranged on the socket protrusion (52), and the positive and negative access ends of a plurality of positive and negative jack groups (53) are connected to the positive and negative poles of a plurality of connecting wires (34) respectively.

3. The finished lithium battery module for facilitating voltage detection and equalization of claim 2, wherein, The equalization detection plug (61) is provided with a plug-in slot (611) on one side end face, a plurality of plug-in columns (612) are arranged in the plug-in slot (611) along the direction from the slot bottom to the slot opening, the socket protrusion (52) can be embedded into the plug-in slot (611), and the circumferential slot wall of the plug-in slot (611) can be embedded into the socket slot (51), and a plurality of plug-in columns (612) are correspondingly plugged into a plurality of jack holes.

4. The finished lithium battery module for facilitating voltage detection and equalization of claim 1, wherein, The lithium battery pack (3) is provided with a lithium battery pack positive terminal (32) and a lithium battery pack negative terminal (33) connected in series by a plurality of positive and negative poles of the lithium battery (31) on one side top end.

5. The finished lithium battery module for facilitating voltage detection and equalization of claim 4, wherein, The box cover (2) is provided with a lithium battery pack total positive terminal (21) and a lithium battery pack total negative terminal (22) which can be connected with external equipment on the top end, the bottom end of the lithium battery pack total positive terminal (21) penetrates the box cover (2) and is connected with the lithium battery pack positive terminal (32), and the bottom end of the lithium battery pack total negative terminal (22) penetrates the box cover (2) and is connected with the lithium battery pack negative terminal (33).

6. The finished lithium battery module for facilitating voltage detection and equalization of claim 5, wherein, The lithium battery pack total negative terminal (22) and the lithium battery pack negative terminal (33) are further connected in series with a lithium battery pack protection board (7) and a relay between the lines, the lithium battery pack protection board (7) is installed above the mounting plate (4), the relay is arranged below the mounting plate (4), the lithium battery pack protection board (7) is provided with a negative input end (71) and a relay connection end (72), the negative input end (71) is connected with the lithium battery pack negative terminal (33), the relay connection end (72) is connected with the input end of the relay, and the output end of the relay is connected with the lithium battery pack total negative terminal (22).

7. The finished lithium battery module for facilitating voltage detection and equalization of claim 6, wherein, The lithium battery pack protection plate (7) further comprises a voltage detection interface (73) and a voltage access plug (75), the voltage detection interface (73) is divided into a positive access end and a negative access end, the voltage access plug (75) is divided into a voltage positive access plug and a voltage negative access plug, the positive poles of a plurality of the lithium batteries (31) are respectively connected to the access end of the voltage positive access plug by wires, and the negative poles are respectively connected to the access end of the voltage negative access plug by wires, and the positive access end and the negative access end are respectively plugged into the positive access end and the negative access end.

8. The finished lithium battery module for facilitating voltage detection and equalization of claim 6, wherein, The lithium battery pack protection plate (7) further comprises a display screen output port (74), and the box cover (2) is provided with a display screen connecting electric column (23) at the top end, the bottom end of the display screen connecting electric column (23) penetrates through the box cover (2) and is connected with the display screen output port (74).

9. The finished lithium battery module for facilitating voltage detection and equalization of claim 8, wherein, Further comprising a voltage display (8), which is arranged outside the battery box (1) and can be connected with the display screen connecting electric column (23).

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