Sweeping robot lithium battery with bms three-level protection system

Abstract

The utility model discloses a kind of sweeping robot lithium batteries with BMS three-level protection system, including sweeping robot and the battery shell of being arranged in the inside of sweeping robot;Battery shell middle part is fixed with intercommunicating plate, multiple heat conduction plates are symmetrically fixed with outside intercommunicating plate equidistance, heat conduction plate inside are all fixed with lithium battery, battery shell bottom is fixed with bottom cover, bottom cover inside is fixed with radiator;Intercommunicating plate, heat conduction plate and the inside of radiator are all hollow structure and form storage cavity in common, storage cavity inside is filled with heat conduction medium.Through above-mentioned structure, heat generated when lithium battery works is transferred to heat-conducting silica gel by heat conduction plate, then it is guided radiator by heat-conducting silica gel inside intercommunicating plate, finally heat is exchanged with external air by fin. Through multistage transfer of heat, heat generated by lithium battery is dissipated to external environment, improve the heat dissipation efficiency of sweeping robot lithium battery, conducive to the promotion battery safety and service life.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to a lithium battery for a sweeping robot with a BMS three-level protection system. Background Technology

[0002] With the widespread adoption of smart home devices, robotic vacuum cleaners, as a typical example of home service robots, have seen their battery life and safety become core concerns for users. Lithium batteries have become the mainstream power solution due to their advantages such as high energy density and long cycle life, but thermal management design remains a technical challenge.

[0003] Robotic vacuum cleaners need to integrate large-capacity batteries, which are usually housed inside the bottom cover. Lithium batteries are prone to generating heat during charging and discharging, and the enclosed environment of a robotic vacuum cleaner exacerbates heat dissipation difficulties. This temperature rise can negatively impact battery safety and lifespan. Therefore, this invention provides a robotic vacuum cleaner lithium battery with a three-level BMS protection system to address the problems mentioned in the background. Utility Model Content

[0004] The purpose of this invention is to provide a lithium battery for a robotic vacuum cleaner with a three-level BMS protection system. The heat generated by the lithium battery during operation is transferred through a heat-conducting plate to thermally conductive silicone, then guided by the thermally conductive silicone inside the connecting plate to a heat sink, and finally exchanged with the external air through a heat sink fin. This multi-stage heat transfer dissipates the heat generated by the lithium battery to the external environment, improving the heat dissipation efficiency of the robotic vacuum cleaner's lithium battery and thus enhancing battery safety and lifespan.

[0005] To achieve the above objectives, a lithium battery for a sweeping robot with a BMS three-level protection system is provided, including a sweeping robot and a battery casing disposed inside the sweeping robot;

[0006] A connecting plate is fixed in the middle of the battery casing, and multiple heat-conducting plates are fixed symmetrically at equal intervals on the outer side of the connecting plate. A lithium battery is fixed inside each of the heat-conducting plates. A bottom cover is fixed at the bottom of the battery casing, and a heat sink is fixed inside the bottom cover.

[0007] The connecting plate, heat-conducting plate, and radiator are all hollow structures and together form a storage cavity, which is filled with a heat-conducting medium.

[0008] According to the lithium battery for a sweeping robot with a BMS three-level protection system, a partition is fixed inside the battery casing, and a battery management unit is fixed inside the battery casing and located on one side of the partition.

[0009] According to the aforementioned lithium battery for a sweeping robot with a BMS three-level protection system, the battery management unit includes a battery module unit, a battery control unit, and a battery aggregation unit.

[0010] According to the aforementioned lithium battery for a robotic vacuum cleaner with a BMS three-level protection system, the heat-conducting plate is designed with a semi-circular structure on the side near the lithium battery, and the heat-conducting plate is made of a material with high thermal conductivity.

[0011] According to the lithium battery of the sweeping robot with a BMS three-level protection system, the outer surface of the heat sink fins of the heat sink is provided with grooves.

[0012] According to the lithium battery for a robotic vacuum cleaner with a BMS three-level protection system, the thermally conductive medium is thermally conductive silicone.

[0013] This utility model has the following beneficial effects:

[0014] 1. Compared with existing technologies, the heat generated by the lithium battery during operation is transferred to the thermally conductive silicone through a heat-conducting plate, then guided to the heat sink through the thermally conductive silicone inside the connecting plate, and finally exchanged with the outside air through the heat sink. This multi-stage heat transfer dissipates the heat generated by the lithium battery to the external environment, improving the heat dissipation efficiency of the robot vacuum's lithium battery, thereby enhancing battery safety and lifespan. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0016] Figure 1 This is a schematic diagram of the overall structure of a lithium battery for a sweeping robot with a BMS three-level protection system according to this utility model;

[0017] Figure 2 This utility model relates to a lithium battery for a robotic vacuum cleaner with a three-level BMS protection system. Figure 1 Schematic diagram of the split structure;

[0018] Figure 3 This is a schematic diagram of the internal structure of the battery casing of a sweeping robot lithium battery with a BMS three-level protection system according to the present invention.

[0019] Figure 4 This is a schematic cross-sectional view of the internal structure of the lithium battery casing of a sweeping robot with a BMS three-level protection system according to this utility model.

[0020] Figure 5 This is a schematic cross-sectional view of the internal structure of the heat-conducting plate and the connecting plate of a lithium battery for a sweeping robot with a BMS three-level protection system according to this utility model.

[0021] Figure 6 This is a schematic diagram of the connecting plate and heat-conducting plate structure of a lithium battery for a sweeping robot with a BMS three-level protection system according to this utility model.

[0022] Figure 7 This is a schematic diagram of the battery management unit structure of a sweeping robot lithium battery with a BMS three-level protection system according to this utility model.

[0023] Legend:

[0024] 1. Robotic vacuum cleaner; 2. Battery casing; 3. Radiator; 4. Bottom cover; 5. Battery management unit; 6. Separator; 7. Connecting plate; 8. Heat-conducting plate; 9. Lithium battery; 51. Battery module unit; 52. Battery control unit; 53. Battery converging unit. Detailed Implementation

[0025] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0026] Reference Figure 1-7 This utility model embodiment discloses a lithium battery for a sweeping robot with a BMS three-level protection system. It includes a sweeping robot 1 and a battery housing 2 disposed inside the sweeping robot 1. A connecting plate 7 is fixed in the middle of the battery housing 2. Multiple heat-conducting plates 8 are symmetrically fixed at equal intervals on the outer side of the connecting plate 7. A lithium battery 9 is fixed inside each of the heat-conducting plates 8. A bottom cover 4 is fixed at the bottom of the battery housing 2. A heat sink 3 is fixed inside the bottom cover 4. The connecting plate 7, the heat-conducting plates 8 and the heat sink 3 are all hollow structures and together form a storage cavity. The storage cavity is filled with a thermally conductive medium, which is thermally conductive silicone.

[0027] The heat generated by the lithium battery 9 during operation is transferred to the thermally conductive silicone through the heat-conducting plate 8, then guided to the heat sink 3 through the thermally conductive silicone inside the connecting plate 7, and finally exchanged with the outside air through the heat sink. This multi-stage heat transfer dissipates the heat generated by the lithium battery 9 to the external environment, improving the heat dissipation efficiency of the robot vacuum's lithium battery, thereby enhancing battery safety and lifespan.

[0028] A partition 6 is fixed inside the battery housing 2, and a battery management unit 5 is fixed inside the battery housing 2 and on one side of the partition 6. The battery management unit 5 includes a battery module unit 51, a battery control unit 52, and a battery converging unit 53.

[0029] The Battery Module Unit (BMU) 51 is the most basic unit in the battery management system, responsible for monitoring and managing individual battery modules. The BMU monitors parameters such as voltage, current, and temperature of individual battery cells, and transmits the collected battery data to the Battery Control Unit (BCU) via communication protocols such as CAN and RS485. Based on this data, the BCU can make further decisions and implement control measures.

[0030] The Battery Control Unit (BCU) 52 is the mid-level control unit of the battery management system. It comprehensively analyzes the data transmitted by the BMU and controls the operation of the entire battery cluster, playing a role in information processing, command issuance, and system coordination. The BCU exchanges data with upper-level control devices (such as the BAU) through communication protocols such as CAN and Modbus, executes commands, and provides feedback on status information.

[0031] The Battery Aggregator Unit (BAU) 53 is responsible for the management of the entire battery. It is responsible for aggregating battery pack data from all BCUs. It typically monitors the voltage, current, temperature, and charging status of the entire battery stack to perform a global status assessment and ensure the overall stability and safety of the battery system.

[0032] The heat-conducting plate 8 has a semi-circular structure on the side closest to the lithium battery 9, and is made of a highly thermally conductive material to increase the contact area and improve heat transfer efficiency. The outer surface of the heat sink 3 has grooves to enhance convection between the heat sink 3 and the air, thereby improving heat dissipation performance.

[0033] Working principle: The heat generated by the lithium battery 9 during operation is transferred to the thermally conductive silicone through the heat-conducting plate 8, then guided to the heat sink 3 through the thermally conductive silicone inside the connecting plate 7, and finally exchanged with the outside air through the heat sink. Through multi-stage heat transfer, the heat generated by the lithium battery 9 is dissipated to the external environment, improving the heat dissipation efficiency of the robot vacuum cleaner's lithium battery, which is beneficial to improving battery safety and lifespan.

[0034] The battery management unit 5, which integrates the battery module unit 51, the battery control unit 52, and the battery aggregation unit 53, monitors the battery status in real time to ensure safe operation.

[0035] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A lithium battery for a robotic vacuum cleaner with a three-level BMS protection system, characterized in that, Includes a robot vacuum cleaner (1) and a battery housing (2) located inside the robot vacuum cleaner (1); A connecting plate (7) is fixed in the middle of the battery housing (2). Multiple heat-conducting plates (8) are fixed symmetrically at equal intervals on the outside of the connecting plate (7). A lithium battery (9) is fixed inside each of the heat-conducting plates (8). A bottom cover (4) is fixed at the bottom of the battery housing (2). A heat sink (3) is fixed inside the bottom cover (4). The connecting plate (7), the heat-conducting plate (8) and the radiator (3) are all hollow and together form a storage cavity, which is filled with a heat-conducting medium.

2. The lithium battery for a sweeping robot with a BMS three-level protection system according to claim 1, characterized in that, A partition (6) is fixed inside the battery housing (2), and a battery management unit (5) is fixed inside the battery housing (2) and on one side of the partition (6).

3. A lithium battery for a sweeping robot with a BMS three-level protection system according to claim 2, characterized in that, The battery management unit (5) includes a battery module unit (51), a battery control unit (52), and a battery aggregation unit (53).

4. A lithium battery for a sweeping robot with a BMS three-level protection system according to claim 3, characterized in that, The heat-conducting plate (8) is set as a semi-circular structure on the side near the lithium battery (9), and the heat-conducting plate (8) is made of a high thermal conductivity material.

5. A lithium battery for a sweeping robot with a BMS three-level protection system according to claim 4, characterized in that, The outer surface of the heat sink fins of the radiator (3) is provided with grooves.

6. A lithium battery for a sweeping robot with a BMS three-level protection system according to claim 5, characterized in that, The thermally conductive medium is thermally conductive silicone.

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