Battery pack of AGV (Automatic Guided Vehicle)

Abstract

The utility model relates to the technical field of battery packs, and discloses an AGV (automated guided vehicle) battery pack which comprises a box body and a box cover, epoxy plates II are fixedly connected to the interiors of the left side and the right side of the box body, a plurality of battery cells are fixedly connected to the sides, close to each other, of the two epoxy plates II, PP (polypropylene) plates are fixedly connected to the sides, close to each other, of the two battery cells, and the PP plates are fixedly connected to the box cover. First EVA cotton is fixedly connected to the interiors of the front side and the rear side of the box body, two first epoxy plates are fixedly connected to the sides, close to each other, of the two first EVA cotton, two positive and negative aluminum bars are electrically connected to the tops of the two battery cells, a series aluminum bar is electrically connected to the tops of the battery cells, second EVA cotton is arranged outside the positive and negative aluminum bars, and the first epoxy plates and the second epoxy plates are fixedly connected to the two sides, close to each other, of the first EVA cotton. The top of the second EVA cotton is fixedly connected with a pressing strip, and the top of the pressing strip is fixedly connected with a third epoxy plate. According to the utility model, the safety of the battery pack is improved, so that potential safety hazards possibly caused by over-charging, over-discharging, short circuit, overheating and the like are prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of battery packs, in particular to a battery pack for an AGV transport vehicle. Background Art

[0002] A battery pack is an integrated device consisting of multiple battery cells, held together by electrical connections and mechanical structures. AGVs require stable and long-lasting power in environments requiring continuous or frequent operation, such as large warehouses, production lines, or logistics centers. The battery pack provides the necessary energy to ensure the AGV can operate continuously for extended periods without frequent stops for recharging.

[0003] In the existing technology, some battery packs are difficult to consider safety and energy endurance issues during design. Therefore, the battery packs are prone to safety hazards such as overcharging, over-discharging, short circuit and overheating. At the same time, their energy density and cycle life are difficult to meet the long-term operation requirements of AGVs, resulting in unstable performance or short service life. Therefore, to address the above shortcomings, an AGV transport vehicle battery pack is proposed. Utility Model Content

[0004] The purpose of this utility model is to solve the shortcomings of the existing technology and propose an AGV transport vehicle battery pack, which aims to improve the problem that some battery packs in the existing technology are difficult to consider safety and energy endurance when designing.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] An AGV transport vehicle battery pack includes a box body and a box cover. The left and right sides of the box body are fixedly connected to epoxy plates 2, and the adjacent sides of the two epoxy plates 2 are fixedly connected to multiple battery cells. The adjacent sides of the two battery cells are fixedly connected to PP plates. The front and back sides of the box body are fixedly connected to EVA cotton 1, and the adjacent sides of the two EVA cotton 1 are fixedly connected to two epoxy plates 1. The tops of the two battery cells are electrically connected to two positive and negative aluminum bars. The tops of the battery cells are electrically connected to a series aluminum bar. The positive and negative aluminum bars are connected to the battery cells. The outside is provided with EVA cotton 2, the top of the EVA cotton 2 is fixedly connected to a pressure strip, the top of the pressure strip is fixedly connected to an epoxy board 3, the top of the epoxy board 3 is fixedly connected to a sheet metal fixing plate, the top of the sheet metal fixing plate is fixedly connected to a BMS integrated machine, the top of the box cover is fixedly connected to a handle, the right side of the box cover is fixedly connected to a communication connector, and the right side of the box cover is fixedly connected to multiple waterproof connectors, two of which are electrically connected to the charging port on the right side, and the other two are electrically connected to the discharge port on the right side of the waterproof connector;

[0007] As a further description of the above technical solution:

[0008] The top of the BMS integrated machine is fixedly connected to the bottom of the box cover, and one side of the two epoxy plates is fixedly connected to the other side of the two battery cells;

[0009] As a further description of the above technical solution:

[0010] The front and rear sides of the EVA cotton 1 are fixedly connected to the adjacent sides of the two epoxy boards 2;

[0011] As a further description of the above technical solution:

[0012] The bottom of the EVA cotton is in contact with the top of the plurality of aluminum bars connected in series, and the bottom of the box cover is engaged with the top of the box body;

[0013] As a further description of the above technical solution:

[0014] The left and right sides of the pressure strip are fixedly connected to the left and right inner walls of the box cover, and the outer portion of the epoxy board three is fixedly connected to the inner wall of the box cover;

[0015] As a further description of the above technical solution:

[0016] The material of the battery core is lithium iron phosphate, and the front and rear sides of the plurality of PP plates are fixedly connected to the adjacent sides of the two epoxy plates.

[0017] The utility model has the following beneficial effects:

[0018] 1. In this utility model, by adopting high-safety battery materials (lithium iron phosphate) and structural design and battery management system (BMS) to monitor battery status in real time and cut off abnormal current in time, the safety of the battery pack is improved, thereby preventing potential safety hazards such as overcharging, over-discharging, short circuit, and overheating.

[0019] 2. In the present invention, by adopting a high-rate lithium iron phosphate battery, the battery life of the battery pack is improved, thereby reducing the downtime in the production or logistics system, improving the overall operating efficiency, and increasing productivity.

[0020] 3. In this utility model, by optimizing battery management strategies, improving battery manufacturing processes and using high-quality battery materials, the life and stability of the battery pack are improved, which in turn can reduce the battery degradation rate, thereby extending the overall service life of the battery and reducing the need for frequent battery replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a three-dimensional diagram of an AGV transport vehicle battery pack proposed in the utility model;

[0022] Figure 2 This is a schematic diagram of the box structure of an AGV transport vehicle battery pack proposed in the utility model.

[0023] Legend:

[0024] 1. EVA cotton (1); 2. Epoxy board (1); 3. Battery cell; 4. Positive and negative aluminum busbars; 5. Epoxy board (2); 6. Box body; 7. Series aluminum busbars; 8. EVA cotton (2); 9. Pressure strip; 10. Epoxy board (3); 11. Box lid; 12. Handle; 13. Communication connector; 14. Waterproof connector; 15. Charging port; 16. Discharge port; 17. BMS (all-in-one system); 18. Sheet metal fixing plate; 19. PP board. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] Reference Figure 1 and Figure 2 The present invention provides an embodiment of an AGV transport vehicle battery pack, comprising a housing 6 and a cover 11. The housing 6 is the primary structural component of the battery pack, protecting the internal battery components and other electronic devices. The housing 6 must be designed to exhibit excellent impact resistance and corrosion resistance and is typically made of high-strength plastic or metal. The upper portion of the housing 6 is enclosed, providing additional protection and sealing, preventing external matter from entering the battery pack while also facilitating maintenance and repair of the internal components. Epoxy plates 25 are fixedly attached to the left and right sides of the housing 6. The epoxy plates 25 are located within the left and right sides of the housing 6 and are used to secure and support the battery cells. Epoxy plates are typically made of epoxy resin and reinforced fiber materials, exhibiting excellent mechanical strength and electrical insulation properties. Multiple battery cells 3 are fixedly attached to adjacent sides of the two epoxy plates 25. The battery cells 3 are the core components within the battery pack, responsible for storing and providing electrical energy. The battery cells 3 are arranged on the epoxy plates 25 and electrically connected to form a battery pack. A PP plate 19 is fixedly connected to the adjacent side of the two battery cells 3. The PP plate 19 is fixed to the adjacent side of the battery cells 3. The PP plate 19 (polypropylene plate) provides additional isolation and protection functions to prevent direct contact between the battery cells 3 and reduce the risk of short circuit and mechanical damage.

[0027] EVA pads 1 are fixedly attached to the front and rear interiors of the case 6. These pads serve as protection and insulation for the battery pack. EVA (ethylene vinyl acetate) pads have excellent cushioning and thermal insulation properties, effectively protecting the battery from external impact and heat. Two epoxy plates 2 are fixedly attached to adjacent sides of the two EVA pads 1. These plates are located adjacent to the battery cells 3, providing further physical protection and support. These plates have excellent strength and heat resistance. The tops of the two battery cells 3 are electrically connected to two positive and negative aluminum busbars 4. A series aluminum busbar 7 is also electrically connected to the tops of the battery cells 3. The aluminum busbars are located on top of the battery cells 3, providing electrical connection and current conduction. Positive and negative aluminum busbars 4 ensure proper connection of the positive and negative terminals of each battery cell 3. Series aluminum busbars 7 connect multiple battery cells 3 to form a complete battery pack. EVA pads 8 are placed outside the multiple positive and negative aluminum busbars 4 to provide isolation and cushioning, protecting the electrical connections from mechanical damage. A pressure strip 9 is fixedly attached to the top of the EVA pads 8. This pressure strip 9 secures components within the battery pack (such as the aluminum busbars) in place, preventing them from shifting or loosening during use. An epoxy plate 3 10 is fixedly attached to the top of the pressure strip 9. This epoxy plate 3 10 sits atop the pressure strip 9 and provides support and protection for the BMS 17. This epoxy plate 3 10 offers excellent insulation and structural stability. A sheet metal fixing plate 18 is fixed to the top of the epoxy plate 3 10, providing mechanical strength and stability. The sheet metal fixing plate 18 is generally used to fix heavy components and withstand physical forces from all directions.

[0028] A BMS (Battery Management System) 17 is fixedly attached to the top of the sheet metal fixing plate 18. This BMS monitors and manages the battery pack's status, including voltage, current, and temperature. The BMS also protects the battery from safety hazards such as overcharging, over-discharging, short circuiting, and overheating, and optimizes the battery's lifespan and performance. A handle 12 is fixedly attached to the top of the cover 11, facilitating the transport and movement of the battery pack. The handle 12 is typically ergonomically designed for ease of use. A communication connector 13 is fixedly attached to the right side of the cover 11. This connector connects to an external communication system, allowing the battery pack to exchange data and communicate with external devices (such as chargers and monitoring systems). Multiple waterproof connectors 14 are also fixed to the right side of the cover 11, preventing moisture from entering the battery pack and protecting internal components from humid environments. The waterproof connectors 14 are designed with waterproof sealing rings to ensure a tight seal at the connector connection. The right sides of two of the waterproof connectors 14 are electrically connected to the charging port 15, which allows external charging devices to connect to the battery pack for charging. The design should consider the capacity and safety of the charging current. The right sides of the other two waterproof connectors 14 are electrically connected to the discharge port 16, which is used to output power from the battery pack to the AGV's electric system. The discharge port 16 must be designed to support the battery pack's maximum discharge current and maintain a stable power supply.

[0029] Reference Figure 1 and Figure 2The top of the BMS all-in-one 17 is fixedly connected to the bottom of the box cover 11. The box cover 11 is the upper cover of the battery pack, which is used to protect the internal components from the external environment and provide structural stability. Its bottom is connected to the battery pack box 6 through a fixed structure. The adjacent sides of the two epoxy plates 2 are fixedly connected to the distant sides of the two battery cells 3. The epoxy plates 2 are usually used for insulation and structural support. The two epoxy plates 2 are fixed to the distant sides of the battery cells 3. This ensures that the battery will not move in the box and provides insulation support. The front and back sides of the EVA cotton 1 are fixedly connected to the adjacent sides of the two epoxy plates 5. The front and back sides of the EVA cotton 1 are fixed to the adjacent sides of the epoxy plates 5, providing buffer protection to prevent vibration and impact from damaging the battery. EVA cotton 8 The bottom of the battery pack contacts the tops of the multiple aluminum bars 7 connected in series. The bottom of the EVA cotton 2 8 contacts the tops of the aluminum bars 7 connected in series, which may help manage the heat of the battery while providing additional insulation. The bottom of the box cover 11 is engaged with the top of the box body 6. The bottom of the box cover 11 is engaged with the top of the box body 6, ensuring the sealing of the battery pack and protecting the internal components from the external environment. The left and right sides of the pressure strip 9 are fixedly connected to the left and right inner walls of the box cover 11. The outside of the epoxy plate 3 10 is fixedly connected to the inner wall of the box cover 11. The pressure strip 9 is fixed to the inner wall of the box cover 11, enhancing structural stability. The outside of the epoxy plate 3 10 is fixedly connected to the inner wall of the box cover 11, providing additional support and insulation protection for the interior. The battery cell 3 is made of lithium iron phosphate. The front and rear sides of the multiple PP plates 19 are fixedly connected to the adjacent sides of the two epoxy plates 2 5. The front and rear PP plates 19 are fixed to the adjacent sides of the epoxy plate 2 5, further increasing the structural stability and insulation performance of the battery pack.

[0030] Working principle: Place the battery module into the sheet metal box 6, and use countersunk screws to fix the upper pressure strip 9 to the box 6. The upper pressure strip 9 not only fixes the battery module, but also ensures that the battery module will not move during use, protecting the battery module from external forces. The top epoxy plate is fixed on the upper pressure strip 9 to prevent aluminum chips or other conductive materials from contacting the battery module to avoid short circuit or explosion. The BMS wiring harness is used to collect the voltage and regional temperature of each battery cell 3, connect to the BMS system for monitoring, measure the output voltage of the module, check the voltage consistency of each battery cell, ensure that all batteries operate at the same voltage level, ensure that the voltage of the charging port 15 and the discharge port 16 are consistent, and ensure stability during the charging and discharging process. The battery information is read through the communication connector 13 to confirm the battery status, health and performance, set the protection threshold, and ensure that the BMS can automatically disconnect the circuit to protect the battery when the battery is abnormal. The battery module is subjected to cyclic charge and discharge tests to verify the long-term stability and reliability of the system. To ensure that the battery module can meet the performance requirements in actual use, after passing the test, the box body 6 and the box cover 11 are finally packaged to ensure that all components are firmly fixed and can work normally. The completed packaging prevents the external environment from affecting the battery module and ensures the long-term service life and safety of the battery module.

[0031] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An AGV transport vehicle battery pack, comprising a box body (6) and a box cover (11), characterized in that: The left and right sides of the box (6) are fixedly connected to epoxy plates 2 (5), the adjacent sides of the two epoxy plates 2 (5) are fixedly connected to multiple battery cells (3), the adjacent sides of the two battery cells (3) are fixedly connected to PP plates (19), the front and rear sides of the box (6) are fixedly connected to EVA cotton 1 (1), the adjacent sides of the two EVA cotton 1 (1) are fixedly connected to two epoxy plates 1 (2), the tops of the two battery cells (3) are electrically connected to two positive and negative aluminum bars (4), the tops of the battery cells (3) are electrically connected to a series aluminum bar (7), and the outsides of the multiple positive and negative aluminum bars (4) are provided with EVA cotton 2 (8), the EVA cotton 2 (8 ) is fixedly connected to the top of a pressure strip (9), the top of the pressure strip (9) is fixedly connected to an epoxy board three (10), the top of the epoxy board three (10) is fixedly connected to a sheet metal fixing plate (18), the top of the sheet metal fixing plate (18) is fixedly connected to a BMS integrated machine (17), the top of the box cover (11) is fixedly connected to a handle (12), the right side of the box cover (11) is fixedly connected to a communication connector (13), and the right side of the box cover (11) is fixedly connected to multiple waterproof connectors (14), two of which are electrically connected to a charging port (15) on the right side, and the other two of which are electrically connected to a discharge port (16) on the right side.

2. The AGV battery pack according to claim 1, characterized in that: The top of the BMS integrated machine (17) is fixedly connected to the bottom of the box cover (11), and the adjacent sides of the two epoxy plates (2) are fixedly connected to the distant sides of the two battery cells (3).

3. The AGV battery pack according to claim 1, characterized in that: The front and rear sides of the EVA cotton one (1) are fixedly connected to the adjacent sides of the two epoxy boards two (5).

4. The AGV battery pack according to claim 1, characterized in that: The bottom of the EVA cotton (8) contacts the top of the plurality of series-connected aluminum rows (7), and the bottom of the box cover (11) is engaged with the top of the box body (6).

5. The AGV battery pack according to claim 1, characterized in that: The left and right sides of the pressure strip (9) are fixedly connected to the left and right inner walls of the box cover (11), and the outside of the epoxy board three (10) is fixedly connected to the inner wall of the box cover (11).

6. The AGV battery pack according to claim 1, characterized in that: The material of the battery core (3) is lithium iron phosphate, and the front and rear sides of the plurality of PP plates (19) are fixedly connected to the adjacent sides of the two epoxy plates (5).

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