A modular lithium battery pack

Abstract

The utility model belongs to the field of lithium battery packs, especially a modular lithium battery pack. In view of the problem that the existing lithium battery pack is easy to disassemble and install from a lithium battery pack and a battery management system box during use, when the lithium battery pack is installed in a relatively narrow position and the height of the installation position is the same as the height of a battery compartment, the handle cannot be hidden, which will hinder the installation of the battery pack and is relatively inconvenient, the following scheme is proposed, which includes a battery compartment, a system box and two handles for carrying the battery compartment. A battery BMS management system circuit module is fixedly provided on an inner wall of one side of the system box. The handle can be hidden by a provided groove and will not exceed the height of the battery compartment, thereby facilitating installation in a narrow place with the same height as the battery compartment without causing any obstruction. The handle can be fixed by magnetic attraction by a magnetic attraction mechanism, and heat can be discharged from the system box by a heat dissipation component to avoid aging and extend the service life.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery packs, in particular to a modular lithium battery pack. Background Art

[0002] Modular lithium battery packs, also known as customized lithium battery modules, are lithium battery systems designed and manufactured according to specific needs.

[0003] After searching, the patent with announcement number CN220544150U discloses a modular and easily disassembled lithium battery pack power supply, including a battery management system box and a battery compartment; the battery management system box: a battery BMS management system circuit module is arranged inside it, a male connector is fixedly connected to the right end of the inside of the battery management system box, a plurality of parallel lithium cells are arranged inside the battery pack, a fixing plate is arranged at the front end of the battery pack, the fixing plate is matched with the back of the battery management system box, a female connector is arranged on the front fixing plate surface, the male connector is plugged into the inside of the female connector, the male connector is electrically connected to the female connector, a plurality of small pins are connected in the connector for battery pack voltage collection connection and temperature collection connection, the connector has two main pins and a socket hole, the modular and easily disassembled lithium battery pack designs the lithium battery pack power supply as two independent and interconnected modules, the lithium battery pack and the battery management system box can be quickly disassembled and installed, and the maintenance efficiency is improved.

[0004] The technical solution has the following problems:

[0005] Although it is convenient to disassemble and install the lithium battery pack and the battery management system box during use, when the lithium battery pack is installed in a relatively narrow position and the height of the installation position is the same as the height of the battery compartment, the handle cannot be hidden, which will hinder the installation of the battery pack and is relatively inconvenient. Utility Model Content

[0006] The purpose of the utility model is to solve the problem in the prior art that although the lithium battery pack and the battery management system box are easy to disassemble and install during use, when the lithium battery pack is installed in a relatively narrow position and the height of the installation position is the same as the height of the battery compartment, the handle cannot be hidden, which will hinder the installation of the battery pack and is relatively inconvenient, and a modular lithium battery pack is proposed.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A modular lithium battery pack comprises a battery compartment, a system box and two handles for carrying the battery compartment, a battery BMS management system circuit module is fixedly provided on one inner wall of the system box, a male connector is fixedly provided on one inner wall of the system box, a battery pack is provided in the battery compartment, a baffle is fixedly provided on one side of the battery compartment, a female connector is fixedly provided on one side of the baffle, the male connector is plugged into the female connector, the female connector is electrically connected to the male connector, an input end of the male connector is electrically connected to a wiring terminal, an output end of the female connector is electrically connected to an input end of the battery pack in the battery compartment, an output end of the battery BMS management system circuit module is electrically connected to the wiring terminal, two insertion racks are fixedly provided on one side of the battery compartment, two ends of the system box are respectively plugged into the two insertion racks, two grooves for hiding the two handles are provided on the top of the battery compartment, rotating shafts are fixedly provided on both sides of the handle, and one end of the two rotating shafts is rotatably connected to the inner walls on both sides of the groove respectively;

[0009] A magnetic attraction mechanism, which is arranged in the two grooves and is used to magnetically fix the two handles;

[0010] The heat dissipation component is arranged on the system box to dissipate heat in the system box.

[0011] In a possible design, the magnetic attraction mechanism includes a support plate, a magnet and an iron sheet, one side of the support plate is fixedly connected to an inner wall of one side of the groove, the bottom of the magnet is fixedly connected to the top of the support plate, and one side of the iron sheet is fixedly connected to one side of the handle.

[0012] In one possible design, the heat dissipation component includes an exhaust fan for exhausting heat from the system box, a square hole is provided on one side of the system box, the outer side of the exhaust fan is fixedly connected to the inner wall of the square hole, and a through hole is provided on one side of the system box to facilitate ventilation inside the system box.

[0013] In a possible design, a second filter screen for preventing dust in the system box is installed on one side of the system box by screws, and the second filter screen covers the through hole.

[0014] In a possible design, a first filter screen is installed on one side of the system box by screws to prevent the exhaust fan from being exposed to the outside, and the first filter screen covers the exhaust fan.

[0015] In a possible design, first mounting plates are fixedly provided on both sides of the battery compartment to facilitate fixing the battery compartment.

[0016] In a possible design, a second mounting plate is fixedly provided on one side of the system box, a first screw for fixing the system box is provided in the second mounting plate, a threaded hole is provided on one side of the battery compartment, and the first screw is threadedly connected to the threaded hole.

[0017] In the present application, when installing the system box, the system box is taken to one side of the battery compartment and the system box is inserted into the bracket. During the insertion process, the baffle will resist the system box. At this time, the male connector is inserted into the female connector for electrical connection. Then, the first screw is turned to thread the first screw and the threaded hole of the battery compartment, thereby fixing the system box and facilitating removal. The handle can be hidden by the provided groove and will not exceed the height of the battery compartment, so that it is convenient to install in a narrow place with the same height as the battery compartment without causing obstacles. The first mounting plate can facilitate the installation of the battery compartment. The handle can be fixed by magnetic attraction by the provided iron sheet and the magnet on the placement plate. The components (battery B) in the system box can be fixed by magnetic attraction. When the BMS management system circuit module is working, the exhaust fan starts working and generates suction to discharge the heat in the system box through the exhaust fan. The first filter and the second filter prevent dust and other impurities from entering the system box, ensuring the normal operation of the heat dissipation components and the internal components of the system box. At the same time, it can also prevent the exhaust fan from being exposed to the outside. The battery pack and the battery management system module are electrically connected through the female connector and the male connector. When the load is discharged, the battery pack voltage enters the battery BMS management system circuit module for voltage, voltage, and temperature collection, and then outputs it to the battery output terminal to connect to the electrical load or charge. When charging, the battery BMS management system circuit module stores the electrical energy inside the battery pack through the male connector and the female connector.

[0018] The beneficial effects of the present invention are:

[0019] In the utility model, the modular lithium battery pack can fix the handle by magnetic attraction through the iron sheet and the magnet on the placement plate through the magnetic attraction mechanism;

[0020] In the utility model, the modular lithium battery pack, through the heat dissipation component, the exhaust fan starts to work, generates suction, and discharges the heat in the system box through the exhaust fan, thereby dissipating the heat in the system box, avoiding aging and extending the service life;

[0021] In the utility model, the handle can be hidden by the provided groove and will not exceed the height of the battery compartment, so that it is convenient to install in a narrow place where the height is the same as the battery compartment without causing any obstruction. The handle can be magnetically fixed by the magnetic suction mechanism, and the heat dissipation component can be used to discharge heat from the system box to avoid aging and extend the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the main structure of a modular lithium battery pack proposed by the utility model;

[0023] Figure 2 This is a schematic diagram of the separation structure of the system box and the battery compartment of a modular lithium battery pack proposed by the utility model;

[0024] Figure 3 A schematic diagram of a partial structure of a modular lithium battery pack proposed by the utility model;

[0025] Figure 4 This is a schematic diagram of the side view structure of a system box of a modular lithium battery pack proposed by the utility model;

[0026] Figure 5 A schematic diagram of a battery compartment top view of a modular lithium battery pack proposed in the utility model;

[0027] Figure 6 This is a schematic diagram of a modular lithium battery pack structure without a handle installed, as proposed by the utility model.

[0028] In the figure: 1. battery compartment; 2. groove; 3. handle; 4. baffle; 5. system box; 6. first filter; 7. second filter; 8. first mounting plate; 9. shaft; 10. support plate; 11. magnet; 12. first screw; 13. second mounting plate; 14. through hole; 15. insertion frame; 16. exhaust fan; 17. male connector; 18. female connector. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0030] Embodiment 1

[0031] Reference Figure 1-6 A modular lithium battery pack is used in the field of lithium battery packs, including: a battery compartment 1, a system box 5 and two handles 3. First, the battery pack is installed in the battery compartment 1 to ensure that the battery pack is stable and correctly connected. Then, a baffle 4 is fixedly installed on one side of the battery compartment 1, and a female connector 18 is fixedly installed on one side of the baffle 4.

[0032] A battery BMS management system circuit module is fixedly installed on the inner wall of one side of the system box 5, and a male connector 17 is fixedly installed at another position of the inner wall of this side. The male connector 17 and the female connector 18 are designed to be pluggable to ensure that the two can be tightly connected and electrically conductive. The input end of the male connector 17 is connected to the wiring terminal through a wire, and the output end of the female connector 18 is electrically connected to the battery pack input end inside the battery compartment 1. At the same time, the output end of the battery BMS management system circuit module is electrically connected to the wiring terminal.

[0033] In order to fix the system box 5 and the battery compartment 1 , two insertion frames 15 are fixedly disposed on one side of the battery compartment 1 , and two ends of the system box 5 are respectively inserted into the two insertion frames 15 .

[0034] Two grooves 2 are provided at the top of the battery compartment 1 for hiding the two handles 3. A rotating shaft 9 is fixedly provided on both sides of each handle 3. One end of the two rotating shafts 9 is rotatably connected to the inner walls of the groove 2 on both sides, so that the handle 3 can be easily rotated in and out of the groove 2.

[0035] In order to achieve magnetic fixation of the handle 3, a magnetic attraction mechanism is set in each groove 2, and the magnetic attraction mechanism includes a support plate 10, a magnet 11 and an iron sheet. One side of the support plate 10 is fixedly connected to the inner wall of one side of the groove 2, and the bottom of the magnet 11 is fixedly connected to the top of the support plate 10. At the same time, the iron sheet is fixedly installed on one side of the handle 3, so that when the handle 3 is rotated into the groove 2, the iron sheet and the magnet 11 attract each other to achieve fixation of the handle 3.

[0036] In order to dissipate the heat of the system box 5, a heat dissipation component is arranged on the system box 5, and the heat dissipation component mainly includes an exhaust fan 16. A square hole is opened on one side of the system box 5, and the outer side of the exhaust fan 16 is fixedly connected to the inner wall of the square hole. At the same time, a through hole 14 is opened on the other side of the system box 5 to help discharge the heat in the system box 5.

[0037] Embodiment 2

[0038] refer to Figure 1-6 , improved on the basis of the first embodiment:

[0039] In order to prevent dust from entering the system box 5, a second filter 7 is installed at the through hole 14 by screws to ensure the dust-proof effect. In addition, in order to prevent the exhaust fan 16 from being exposed to the outside and inhaling impurities, a first filter 6 is installed on the outside of the exhaust fan 16 by screws.

[0040] In order to facilitate the fixation of the battery compartment 1, first mounting plates 8 are fixedly provided on both sides thereof, and the user can select a suitable fixing method according to the needs.

[0041] At the same time, a second mounting plate 13 is fixedly set on one side of the system box 5, and a first screw 12 is set in the second mounting plate 13. A threaded hole is opened on one side of the battery compartment 1, and the first screw 12 is threadedly connected to the threaded hole, so that the system box 5 is firmly fixed on the battery compartment 1.

[0042] The working principle of the battery BMS management system circuit module is the same as that of authorization number CN220544150U, which will not be repeated here.

[0043] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A modular lithium battery pack, comprising a battery compartment (1), a system box (5) and two handles (3) for facilitating carrying the battery compartment (1), characterized in that: A battery BMS management system circuit module is fixedly arranged on an inner wall of one side of the system box (5); a male connector (17) is fixedly arranged on an inner wall of one side of the system box (5); a battery pack is arranged in the battery compartment (1); a baffle (4) is fixedly arranged on one side of the battery compartment (1); a female connector (18) is fixedly arranged on one side of the baffle (4); the male connector (17) is plugged into the female connector (18); the female connector (18) is electrically connected to the male connector (17); an input end of the male connector (17) is electrically connected to a wiring terminal; the female connector (18) is electrically connected to the input end of the male connector (17); and the female connector (18) is electrically connected to the input end of the male connector (17). The output end of the battery compartment (8) is electrically connected to the battery pack input end inside the battery compartment (1), and the output end of the battery BMS management system circuit module is electrically connected to the wiring terminal. Two insertion racks (15) are fixedly provided on one side of the battery compartment (1), and the two ends of the system box (5) are respectively inserted into the two insertion racks (15). The top of the battery compartment (1) is provided with two grooves (2) for hiding the two handles (3). The two sides of the handle (3) are fixedly provided with rotating shafts (9), and one end of the two rotating shafts (9) is respectively rotatably connected to the inner walls on both sides of the groove (2); A magnetic attraction mechanism, the magnetic attraction mechanism is arranged in the two grooves (2) and is used to magnetically fix the two handles (3); A heat dissipation component is arranged on the system box (5) and is used to dissipate heat from the system box (5).

2. A modular lithium battery pack according to claim 1, characterized in that: The magnetic attraction mechanism comprises a support plate (10), a magnet (11) and an iron sheet, one side of the support plate (10) is fixedly connected to an inner wall of one side of the groove (2), the bottom of the magnet (11) is fixedly connected to the top of the support plate (10), and one side of the iron sheet is fixedly connected to one side of the handle (3).

3. A modular lithium battery pack according to claim 1, characterized in that: The heat dissipation component comprises an exhaust fan (16) for exhausting heat from the system box (5); a square hole is provided on one side of the system box (5); the outer side of the exhaust fan (16) is fixedly connected to the inner wall of the square hole; and a through hole (14) is provided on one side of the system box (5) for facilitating ventilation in the system box (5).

4. A modular lithium battery pack according to claim 1, characterized in that: A second filter screen (7) for preventing dust in the system box (5) is installed on one side of the system box (5) by means of screws, and the second filter screen (7) covers the through hole (14).

5. A modular lithium battery pack according to claim 1, characterized in that: A first filter (6) is installed on one side of the system box (5) by means of screws to prevent the exhaust fan (16) from being exposed to the outside, and the first filter (6) covers the exhaust fan (16).

6. A modular lithium battery pack according to claim 1, characterized in that: First mounting plates (8) are fixedly provided on both sides of the battery compartment (1) to facilitate fixing of the battery compartment (1).

7. A modular lithium battery pack according to claim 1, characterized in that: A second mounting plate (13) is fixedly provided on one side of the system box (5), a first screw (12) for fixing the system box (5) is provided inside the second mounting plate (13), a threaded hole is provided on one side of the battery compartment (1), and the first screw (12) is threadedly connected to the threaded hole.

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