Motor home battery

Abstract

The utility model relates to the technical field of batteries, in particular to a motor home battery. Comprising a shell, a charging interface, a battery pack, a BMS board and a secondary protection module, the positive electrode of the charging interface is connected with the input end of the secondary protection module, the output end of the secondary protection module is connected with the positive electrode of the battery pack, the negative electrode of the battery pack is connected with the input end of the BMS board, and the output end of the BMS board is connected with the negative electrode of the charging interface; the battery pack, the BMS board and the secondary protection module are all arranged in the shell, and the charging interface is exposed outside the shell; the secondary protection module is arranged in the motor home battery system, the output end of the charging interface is connected with the input end of the secondary protection module, and the output end of the secondary protection module is connected with the positive electrode of the battery pack, so that the battery management system can be protected under the condition that protection functions such as overcharge protection, over-discharge protection or temperature monitoring of the battery management system fail. And a charging loop in the system is cut off, so that the battery is prevented from being damaged due to over-charging, over-current or over-high temperature, and secondary protection is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a battery for a recreational vehicle. Background Art

[0002] The battery for a recreational vehicle is used to provide the power supply inside the recreational vehicle. Deep cycle batteries are usually adopted, which are used for long-term and frequent discharge and charge cycles. Some modern recreational vehicle battery systems are equipped with a battery management system to detect and manage the charge and discharge process of the battery to ensure the safety performance of the battery. The existing recreational vehicles rely too much on the battery management system for their battery protection system. In abnormal situations, such as when the charging MOS tube or the discharging MOS tube is damaged, although the battery management system can send control instructions to the charging and discharging MOS tubes, since the charging and discharging MOS tubes are already directly connected and cannot be turned off, the charging protection of the battery management system will fail. In this case, there will be a great potential safety hazard if the battery continues to charge and discharge.

[0003] Therefore, it is crucial for those skilled in the art to design a battery for a recreational vehicle with a high safety factor. Summary of the Utility Model

[0004] The technical problem to be solved in the embodiment of the utility model is to provide a battery for a recreational vehicle with a high safety factor to solve the problem that there will be a great potential safety hazard for the battery of a recreational vehicle when the charging protection of the battery management system fails in the prior art.

[0005] The utility model discloses a battery for a recreational vehicle, and the solution lies in that it includes: a housing, a charging interface, a battery pack, a BMS board and a secondary protection module. The positive pole of the charging interface is connected to the input end of the secondary protection module, the output end of the secondary protection module is connected to the positive pole of the battery pack, the negative pole of the battery pack is connected to the input end of the BMS board, and the output end of the BMS board is connected to the negative pole of the charging interface. Among them, the battery pack, the BMS board and the secondary protection module are all arranged inside the housing, and the charging interface is exposed outside the housing.

[0006] Optionally, both between the output end of the secondary protection module and the positive pole of the battery pack and between the negative pole of the battery pack and the input end of the BMS board are connected through flexible copper bars.

[0007] Optionally, both between the positive pole of the charging interface and the input end of the secondary protection module and between the negative pole of the charging interface and the input end of the BMS board are connected through copper bars.

[0008] Optionally, the secondary protection module includes a protective case and a smart fuse. The smart fuse is disposed within the protective case, and one end of the smart fuse is connected to the positive electrode of the charging interface, and the other end of the smart fuse is connected to the positive electrode of the battery pack.

[0009] Optionally, heat dissipation structures are provided on both side surfaces of the BMS board.

[0010] Optionally, the BMS board is flush with the secondary protection module.

[0011] Optionally, the battery pack includes a battery compartment and a plurality of battery cells. The plurality of battery cells are all disposed within the battery compartment, and a pressing strip for fixing the battery cells is provided on the battery compartment.

[0012] Optionally, an insulating board is provided on the pressing strip.

[0013] Optionally, a communication board is further included. The communication board is electrically connected to the BMS board and is flush with the BMS board.

[0014] Optionally, a plurality of communication interfaces and switches are provided on the communication board.

[0015] Compared with the prior art, the beneficial effects of the RV battery provided by the embodiments of the present invention are as follows: By providing a secondary protection module in the RV battery system, connecting the output end of the charging interface to the input end of the secondary protection module, and connecting the output end of the secondary protection module to the positive electrode of the battery pack, it is possible to cut off the charging circuit in the system to stop the external power supply from charging the battery pack in the case where the overcharge protection, over-discharge protection, or temperature monitoring and other protection functions of the battery management system fail, thereby preventing the battery from being damaged due to overcharging, overcurrent, or excessive temperature, and realizing secondary protection of the battery pack. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The technical solutions of the present invention will be further described in detail below in conjunction with the drawings and embodiments. In the drawings:

[0017] Figure 1 is a three-dimensional schematic diagram of the RV battery provided by the embodiments of the present invention Figure One ;

[0018] Figure 2 is a three-dimensional schematic diagram of the RV battery provided by the embodiments of the present invention Figure Two ;

[0019] Figure 3 is a three-dimensional schematic diagram of the outer shell provided by the embodiments of the present invention;

[0020] Figure 4 is provided by the embodiments of the present invention Figure 2Partial schematic diagram;

[0021] Figure 5 It is the left view of the RV battery provided by the embodiment of the present utility model.

[0022] Each reference numeral in the figure is:

[0023] 1. Outer shell; 2. Charging interface; 3. Battery pack; 4. BMS board; 5. Secondary protection module; 6. Flexible copper busbar; 7. Copper busbar; 8. Communication board;

[0024] 11. Base; 12. Upper cover; 121. Avoidance hole; 21. Positive pole of the charging interface; 22. Negative pole of the charging interface; 31. Positive pole of the battery pack; 32. Negative pole of the battery pack; 33. Pressure strip; 34. Insulating board. Specific implementation manner

[0025] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. Now, in conjunction with the drawings, the preferred embodiments of the present utility model will be described in detail.

[0026] As Figures 1 to 5 shown, the present utility model provides a specific embodiment of an RV battery.

[0027] An RV battery, referring to Figure 1 and Figure 2 , the RV battery includes: an outer shell 1, a charging interface 2, a battery pack 3, a BMS board 4, and a secondary protection module 5. The positive pole of the charging interface 2 is connected to the input end of the secondary protection module 5, the output end of the secondary protection module 5 is connected to the positive pole of the battery pack 3, the negative pole of the battery pack 3 is connected to the input end of the BMS board 4, and the output end of the BMS board 4 is connected to the negative pole of the charging interface 2; wherein, the battery pack 3, the BMS board 4, and the secondary protection module 5 are all arranged inside the outer shell 1, and the charging interface 2 is exposed outside the outer shell 1.

[0028] Specifically, referring to Figure 2 , the battery pack 3 is composed of multiple cell monomers, which is used to store and release energy and provide the required power support for the RV. This RV battery uses a deep-cycle battery to meet the needs of frequent charging and discharging; the BMS board 4 is a circuit board with a battery management system, which is used to monitor, manage, and protect the battery to ensure that the battery operates within a safe range. Specifically, by monitoring parameters such as the voltage, temperature, and current of the battery, intelligent management of the battery can be achieved, including overcharge protection, over-discharge protection, and temperature monitoring, etc. The presence of the BMS board 4 can improve the safety, stability, and service life of the battery.

[0029] Furthermore, referring to Figure 2, the secondary protection module 5 is used to protect the battery pack 3 when the overcharge protection, over-discharge protection or temperature monitoring and other protection functions of the battery management system fail; for example, when the charging MOS tube or the discharging MOS tube in the battery management system is damaged, although the battery management system can send control instructions to the charging MOS tube or the discharging MOS tube, since the charging MOS tube or the discharging MOS tube itself has been short-circuited and cannot be turned off, the charging protection of the battery management system will fail. The secondary protection module 5 will cut off the charging circuit in this state to stop charging the battery pack 3, thereby providing secondary protection for the battery pack 3.

[0030] Furthermore, referring to Figure 3 , the housing 1 includes a base 11 and an upper cover 12. A cavity is provided inside the base 11. The battery pack 3 is arranged in the cavity, and the bottom of the battery pack 3 is fixed to the bottom of the cavity. The BMS board 4 and the secondary protection module are both arranged above the battery pack 3 and are together in the cavity. The base 11 extends outwards at one end corresponding to the opening of the cavity to form a mounting plate; the upper cover 12 is provided with side plates around it. The upper cover 12 covers the base 11, and the outer wall of the mounting plate abuts against the inner wall of the side plate of the upper cover 12 and is fixed by screws or other fasteners to seal the battery pack 3, the BMS board 4 and the secondary protection module in the housing 1 to protect the battery pack 3, the BMS board 4 and the secondary protection module; wherein, the charging interface 2 is arranged above the battery pack 3, and the upper cover 12 is provided with an avoidance hole 121 corresponding to the position of the charging interface 2. When the upper cover 12 covers the base 11, the charging interface 2 can pass through the avoidance hole 121 and be exposed on the outer surface of the upper cover 12 to facilitate connection to an external power source.

[0031] In this embodiment, by setting a secondary protection module in the RV battery system, connecting the output end of the charging interface to the input end of the secondary protection module, and connecting the output end of the secondary protection module to the positive electrode of the battery pack, it is possible to cut off the charging circuit in the system to stop the external power source from charging the battery pack when the overcharge protection, over-discharge protection or temperature monitoring and other protection functions of the battery management system fail, thereby preventing the battery from being damaged due to overcharging, overcurrent or overheating, and realizing secondary protection for the battery pack.

[0032] In one of the embodiments, referring to Figure 4 , both between the output end of the secondary protection module 5 and the positive electrode 31 of the battery pack 3 and between the negative electrode 32 of the battery pack 3 and the input end of the BMS board 4 are connected by a flexible copper busbar 6.

[0033] Specifically, the flexible copper busbar is a soft copper flat plate or strip material with good electrical conductivity, usually made of pure copper or copper containing a small amount of other alloy elements, and has good flexibility, electrical conductivity, thermal conductivity and plasticity.

[0034] In this embodiment, since the RV is in a vibrating state during use, soft connection through a flexible copper busbar can relieve the stress generated during the vibration of the RV, thereby ensuring that the welded aluminum busbar of the battery tab will not be shaken off by the stress, ensuring the seismic performance of the RV battery system, and thus improving the stability of the RV battery system.

[0035] In one embodiment, referring to Figure 2 and Figure 4 , between the positive electrode 21 of the charging interface 2 and the input end of the secondary protection module 5, and between the negative electrode 22 of the charging interface 2 and the input end of the BMS board 4 are both connected by a copper busbar 7.

[0036] Specifically, referring to Figure 2 and Figure 4 , between the positive electrode 21 of the charging interface 2 and the input end of the secondary protection module 5, and between the negative electrode 22 of the charging interface 2 and the input end of the BMS board 4 can be connected by either a common copper busbar or a flexible copper busbar 6. Since the stress on the charging interface 2 end during the vibration of the RV is relatively small compared to the stress on the battery pack 3 end, in order to save costs, the charging interface 2 end can be connected using a common copper busbar.

[0037] In one embodiment, the secondary protection module 5 includes a protective case and an intelligent fuse. The intelligent fuse is arranged inside the protective case, and one end of the intelligent fuse is connected to the positive electrode of the charging interface 2, and the other end of the intelligent fuse is connected to the positive electrode of the battery pack 3.

[0038] Specifically, on the one hand, the protective case is used to provide a physical barrier for the intelligent fuse to protect the intelligent fuse from mechanical damage, dust, water vapor and other physical factors in the external environment, thereby improving the service life and stability of the intelligent fuse. On the other hand, the protective case is used for safety protection to prevent people from contacting the live parts inside the secondary protection module 5 and reducing the risk of accidental electric shock.

[0039] In one embodiment, heat dissipation structures are provided on both side surfaces of the BMS board 4.

[0040] Specifically, heat dissipation structures are provided on the side surface of the BMS board 4 close to the battery pack 3 and on the side surface of the BMS board 4 close to the upper cover 12. The heat dissipation structure can help effectively conduct the heat generated by the electronic components to the heat dissipation structure and dissipate the heat to the surrounding environment through the heat dissipation structure, which helps to prevent the electronic components from being damaged due to overheating, thereby maintaining the stability and reliability of the circuit board.

[0041] In one embodiment, referring to Figure 1 and Figure 2 , the BMS board 4 is flush with the secondary protection module 5.

[0042] Specifically, referring to Figure 1 and Figure 2 , the secondary protection module 5 is arranged on one side of the BMS board 4 and is on the same horizontal plane as the BMS board 4. This arrangement can make the structure of the RV battery more compact, ensure the overall height of the RV battery, and reduce the space occupied by the RV battery.

[0043] In one embodiment, referring to Figure 2 and Figure 5 , the battery pack 3 includes a battery compartment and a plurality of battery cells. The plurality of battery cells are all arranged in the battery compartment, and a pressure strip 33 for fixing the battery cells is arranged on the battery compartment.

[0044] Specifically, referring to Figure 2 and Figure 5 , the battery compartment includes a plurality of receiving grooves for receiving the battery cells. The plurality of receiving grooves are arranged side by side, and the plurality of battery cells are respectively arranged in the plurality of receiving grooves. The pressure strip 33 is arranged on the battery compartment and spans across the plurality of side-by-side receiving grooves to tightly press and fix all the battery cells in the receiving grooves, so as to ensure that the battery cells of the RV are not affected by vibration during driving, and improve the stability and safety of the RV battery.

[0045] In one embodiment, referring to Figure 5 , an insulating board 34 is arranged on the pressure strip 33. The insulating board 34 is used for electrical insulation to improve electrical safety.

[0046] In one embodiment, referring to Figure 1 and Figure 2 , the RV battery further includes a communication board 8. The communication board 8 is electrically connected to the BMS board 4 and is flush with the BMS board 4.

[0047] Specifically, referring to Figure 1 and Figure 2 , a plurality of communication interfaces and switches are arranged on the communication board 8. The plurality of communication interfaces can enable the battery system of the RV to communicate with external devices or monitoring systems, realize remote monitoring and management, so as to facilitate users to remotely monitor the battery status, perform fault diagnosis and real-time control, and improve the reliability and safety of the system.

[0048] It should be understood that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. For those skilled in the art, the technical solutions recorded in the above embodiments can be modified, or some of the technical features can be equivalently replaced; and all such modifications and replacements should fall within the protection scope of the appended claims of the present invention.

Claims

1. A motorhome battery, characterized in that, Including: A housing, a charging interface, a battery pack, a BMS board and a secondary protection module. The positive pole of the charging interface is connected to the input end of the secondary protection module. The output end of the secondary protection module is connected to the positive pole of the battery pack. The negative pole of the battery pack is connected to the input end of the BMS board. The output end of the BMS board is connected to the negative pole of the charging interface. Among them, the battery pack, the BMS board and the secondary protection module are all arranged inside the housing, and the charging interface is exposed outside the housing.

2. The motorhome battery according to claim 1, characterized in that, Between the output end of the secondary protection module and the positive pole of the battery pack, and between the negative pole of the battery pack and the input end of the BMS board are both connected by flexible copper bars.

3. The RV battery according to claim 1, characterized in that, Between the positive pole of the charging interface and the input end of the secondary protection module, and between the negative pole of the charging interface and the input end of the BMS board are both connected by copper bars.

4. The motorhome battery according to claim 1, wherein The secondary protection module includes a protective case and an intelligent fuse. The intelligent fuse is arranged inside the protective case, and one end of the intelligent fuse is connected to the positive pole of the charging interface, and the other end of the intelligent fuse is connected to the positive pole of the battery pack.

5. The motorhome battery according to claim 1, wherein Heat dissipation structures are arranged on both side surfaces of the BMS board.

6. The motorhome battery according to claim 1, characterized in that, The BMS board is arranged flush with the secondary protection module.

7. The recreational vehicle battery according to claim 1, characterized in that, The battery pack includes a battery compartment and a plurality of battery cells. The plurality of battery cells are all arranged inside the battery compartment, and a pressing strip for fixing the battery cells is arranged on the battery compartment.

8. The RV battery according to claim 7, characterized in that, An insulating board is arranged on the pressing strip.

9. The motorhome battery according to claim 1, wherein, It further includes a communication board. The communication board is electrically connected to the BMS board and is arranged flush with the BMS board.

10. The motorhome battery according to claim 9, characterized in that, A plurality of communication interfaces and switches are arranged on the communication board.

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