Lithium battery system assembly with anti-condensation for cold storage

Abstract

The utility model discloses a kind of lithium battery system assembly with condensation-proof for freezer, belong to engineering machinery battery structure technical field, including battery module box, the upper end of battery module box is fixedly connected with upper box, the upper end of upper box is fixedly connected with integrated upper cover;Upper box is equipped with mutually isolated battery cavity and electrical cavity, the lower end of battery cavity is communicated with battery module box, electrical cavity is fixedly installed with electrical device support in;Integrated upper cover includes cover body, the side of cover body is battery compartment cover plate, battery compartment cover plate is located in the upper end of battery cavity and plays the sealing effect to battery cavity, the other side of cover body is electrical compartment cover plate, electrical compartment cover plate is located in the upper end of electrical cavity and plays the sealing effect to electrical cavity, the lower end of battery compartment cover plate and electrical compartment cover plate is all formed into internal recessed cavity by protruding upwards, the sidewall of battery compartment cover plate is connected electrical compartment cover plate by through-wall terminal.The utility model has the advantages of: good condensation-preventing effect, convenient maintenance.

Description

Technical Field

[0001] This utility model relates to the field of engineering machinery battery structure technology, specifically to a lithium battery system assembly for cold storage with anti-condensation properties. Background Technology

[0002] Cold storage forklifts are forklifts specifically designed for storing and transporting goods in low-temperature environments. They are commonly used in cold storage, freezer, and refrigerated warehouses, and are characterized by their ability to withstand low temperatures, prevent condensation, and withstand long-term use in harsh environments.

[0003] Harsh environments place extremely high demands on battery safety. In particular, batteries that frequently move in and out of cold storage are subject to frequent temperature changes, which can cause a large amount of condensation inside the battery, leading to insulation problems in the battery's electrical components and, in severe cases, even safety accidents. Utility Model Content

[0004] The present invention aims to solve the technical problems mentioned in the background section above by providing a lithium battery system assembly for cold storage with anti-condensation properties, thereby addressing the problem of poor anti-condensation performance of existing lithium battery housing assemblies for cold storage forklifts.

[0005] Based on the above objectives, the technical solution provided by this utility model is as follows: a lithium battery system assembly for cold storage with anti-condensation water, including a battery module box, an upper box body fixedly connected to the upper end of the battery module box, and an integrated upper cover fixedly connected to the upper end of the upper box body.

[0006] The upper housing has a battery compartment and an electrical compartment that are isolated from each other. The lower end of the battery compartment is connected to the battery module box, and the electrical compartment has a fixed support for electrical components.

[0007] The integrated top cover includes a cover body. One side of the cover body is a battery compartment cover plate, which is located at the top of the battery cavity and seals the battery cavity. The other side of the cover body is an electrical compartment cover plate, which is located at the top of the electrical cavity and seals the electrical cavity. The lower ends of both the battery compartment cover plate and the electrical compartment cover plate protrude upward to form internal concave cavities. The side wall of the battery compartment cover plate is connected to the electrical compartment cover plate through a through-wall terminal.

[0008] In some embodiments, the battery module box includes a housing, which is cubic in shape, with multiple support beams vertically fixedly connected to the perimeter of its inner sidewalls. Two support plates are provided on the upper end of one side of the housing, and the lower ends of the two support plates are fixedly connected to the support beams.

[0009] In some embodiments, a desiccant is provided inside the electrical cavity.

[0010] In some embodiments, a groove is provided around the bottom perimeter of the battery module box, and a door panel that can be opened from the outside is provided on the side wall of the battery module box near the groove. A desiccant is provided inside the groove, and the desiccant can be replaced by opening the door panel.

[0011] In some embodiments, electrical components mounted on the electrical component support inside the electrical cavity are electrically connected to the battery cavity via through-wall terminals.

[0012] In some embodiments, a sealing strip is provided between the one-piece top cover and the upper housing.

[0013] In some embodiments, a maintenance plate is provided on the cover, which can be opened to repair the electrical components inside the electrical cavity.

[0014] The advantages of this utility model compared with the prior art are: through the distributed structure of the upper box being sealed to each other and the detachable maintenance plate, the PDU and the battery module box are connected by a wiring harness through the wall terminal, which improves the anti-condensation effect of the lithium battery box assembly, and the structure is simple and easy to maintain.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] Figure 1 This is a perspective view of the battery system assembly according to an embodiment of the present invention;

[0017] Figure 2 yes Figure 1 A perspective view of the battery module box structure shown in the figure;

[0018] Figure 3 yes Figure 1 A perspective view of the integrated top cover structure shown;

[0019] In the attached diagram: 1. Battery module box; 11. Shell; 12. Support beam; 13. Second-layer support plate; 14. Tank;

[0020] 2. Upper housing; 21. Battery compartment; 22. Electrical compartment; 23. Electrical component support;

[0021] 3. One-piece top cover; 31. Cover body; 32. Battery compartment cover; 33. Inspection panel; 34. Electrical compartment cover;

[0022] 4. Through-wall terminal. Detailed Implementation

[0023] The present invention will now be described in further detail.

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0025] Combination Figure 1 As shown, a lithium battery system assembly for cold storage with anti-condensation features a battery module box 1 with horizontally extended connecting lugs along its upper edge, a top box 2 with horizontally extended connecting lugs along both its lower and upper edges, and an integrated top cover 3 with horizontally extended connecting lugs along its lower edge. The connecting lugs are provided with multiple screw holes and are used to fix the battery module box 1, the top box 2, and the integrated top cover 3. Sealing strips are installed between the battery module box 1, the top box 2, and the integrated top cover 3.

[0026] Combination Figure 2 As shown, the housing 11 of the battery module box 1 is cubic, and a layer of battery modules is installed inside it. Multiple support beams 12 are vertically fixedly connected to the inner side wall of the battery module box 1. A second layer of support plate 13 is provided on the upper left side of the housing 11. The lower end of the second layer of support plate 13 is fixedly connected to the support beam 12. A second layer of battery modules is provided on the second layer of support plate 13. The main body of the second layer of battery modules is located in the battery cavity 21 of the upper housing 2.

[0027] The bottom edge of the battery module box 1 is provided with a tank 14 for holding desiccant. The side wall of the battery module box 1 near the tank 14 is provided with a door panel that can be opened from the outside. The desiccant can be replaced by opening the door panel.

[0028] The upper housing 2 is a coverless structure. Inside the upper housing 2, there are mutually isolated battery chamber 21 and electrical chamber 22. The battery chamber 21 is uncovered at the top and bottom. The lower end of the battery chamber 21 is connected to the battery module box 1, and the upper end of the battery chamber 21 is sealed by the battery compartment cover plate 32 of the integrated upper cover 3.

[0029] The electrical cavity 22 has no cover plate at the top and a base plate at the bottom. An electrical component bracket 23 is fixedly installed inside the electrical cavity 22. The controller and electrical components are installed on the electrical component bracket 23. The top of the electrical cavity 22 is sealed by an integrated top cover 3, forming a sealed PDU box.

[0030] Combination Figure 3 As shown, the right side of the cover 31 of the integrated top cover 3 is the battery compartment cover 32. The bottom of the battery compartment cover 32 is completely open. The battery compartment cover 32 is located at the upper end of the battery cavity 21 and seals the battery cavity 21.

[0031] The left side of the cover 31 is the electrical compartment cover 34, which is located at the upper end of the electrical cavity 22 and seals the electrical cavity 22.

[0032] The lower ends of both the battery compartment cover 32 and the electrical compartment cover 34 protrude upwards to form internal cavities. The side wall of the battery compartment cover 32 is connected to the electrical compartment cover 34 through the through-wall terminal 4, that is, to the controller and other components inside the electrical cavity 22.

[0033] A maintenance plate 33 is provided on the cover 31. The maintenance plate 33 can be opened from the outside of the cover 31. After the maintenance plate 33 is opened, the electrical components in the electrical cavity 22 (i.e., PDU box) can be repaired.

[0034] In this embodiment, the battery system assembly uses a distributed architecture to isolate the battery module from the PDU box, and connects the main positive and main negative wires and the communication harness to the PDU box via through-wall terminal 4 (e.g., Figure 1 This ensures physical isolation between the PDU box and the battery compartment, preventing moisture inside the PDU from entering the battery compartment (e.g., Figure 3 Meanwhile, a maintenance plate 33 connected by bolts is added only to the PDU box. During maintenance, the bolts are removed and the maintenance plate 33 is opened for maintenance. The battery compartment cover 32 remains closed throughout its entire lifespan.

[0035] By adding a desiccant inside the battery module box 1, the relative humidity inside the battery module box 1 is maintained below 10% throughout its entire lifespan (e.g., Figure 2 ).

[0036] Furthermore, for the PDU box, after physical isolation from the battery module box 1, a replaceable desiccant and a waterproof design are added to the bottom. Specifically, the bottom plate, side plates, and cover of the PDU box are connected to a waterproof sealing gasket via press-fit nuts. Combined with connectors with an IP67 waterproof rating, the overall waterproof rating reaches IP67. At this level, external moisture cannot enter the battery. Simultaneously, the desiccant keeps the relative humidity inside the PDU box below 10%. With no external moisture entering the PDU box and the relative humidity low, the trace amounts of moisture inside the PDU box cannot condense, thus achieving the anti-condensation function.

[0037] During maintenance, only the PDU box is opened, without affecting the battery module box 1, which greatly improves the convenience of maintenance.

[0038] Finally, the right side of the upper housing 2 is designed with a four-sided closed bottom opening, which allows the upper and lower modules to be connected and facilitates module series connection.

[0039] The design of this system assembly can effectively reduce structural complexity, improve anti-condensation performance, and enhance ease of maintenance.

[0040] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A lithium battery system assembly for cold storage with anti-condensation features, characterized in that: Includes a battery module box (1), the upper end of which is fixedly connected to an upper box body (2), and the upper end of the upper box body (2) is fixedly connected to an integrated upper cover (3); The upper housing (2) is provided with a battery cavity (21) and an electrical cavity (22) that are isolated from each other. The lower end of the battery cavity (21) is connected to the battery module box (1). An electrical component bracket (23) is fixedly installed in the electrical cavity (22). The integrated top cover (3) includes a cover body (31). One side of the cover body (31) is a battery compartment cover plate (32), which is located at the upper end of the battery cavity (21) and seals the battery cavity (21). The other side of the cover body (31) is an electrical compartment cover plate (34), which is located at the upper end of the electrical cavity (22) and seals the electrical cavity (22). The lower ends of both the battery compartment cover plate (32) and the electrical compartment cover plate (34) protrude upward to form an internal cavity. The side wall of the battery compartment cover plate (32) is connected to the electrical compartment cover plate (34) through a through-wall terminal (4).

2. The lithium battery system assembly for cold storage with anti-condensation properties according to claim 1, characterized in that: The battery module box (1) includes a housing (11), which is cubic in shape. Multiple support beams (12) are vertically fixedly connected to the perimeter of its inner sidewall. Two support plates (13) are provided on the upper side of one side of the housing (11), and the lower end of the two support plates (13) is fixedly connected to the support beams (12).

3. The lithium battery system assembly for cold storage with anti-condensation properties according to claim 1, characterized in that: The electrical cavity (22) is equipped with a desiccant.

4. The lithium battery system assembly for cold storage with anti-condensation properties according to claim 1, characterized in that: The battery module box (1) has a groove (14) around its bottom edge. The side wall of the battery module box (1) near the groove (14) has a door panel that can be opened from the outside. The groove (14) contains a desiccant. The desiccant can be replaced by opening the door panel.

5. The lithium battery system assembly for cold storage with anti-condensation properties according to claim 1, characterized in that: The electrical components installed on the electrical component bracket (23) inside the electrical cavity (22) are electrically connected to the battery cavity (21) through the through-wall terminal (4).

6. The lithium battery system assembly for cold storage with anti-condensation properties according to claim 1, characterized in that: A sealing strip is provided between the integrated top cover (3) and the upper box body (2).

7. The lithium battery system assembly for cold storage with anti-condensation properties according to claim 1, characterized in that: The cover (31) is provided with a maintenance plate (33), which can be opened to repair the electrical components in the electrical cavity (22).

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