A battery box

Abstract

This utility model relates to the field of battery box technology, specifically to a battery box, comprising: a battery box shell and a sealing cover assembly. The inner cavity of the battery box shell has a battery placement cavity and an electrical component mounting cavity. The bottom of the battery placement cavity is inclined downwards at one corner away from the electrical component mounting cavity. Several vertical tubes are connected at intervals to the inner wall of the battery placement cavity. A rectangular mounting shell assembly is provided inside the battery placement cavity. A through gap cavity is provided between the periphery of the rectangular mounting shell assembly and the inner wall of the battery placement cavity. The bottom of the rectangular mounting shell assembly does not contact the bottom of the battery placement cavity. At least two through holes are provided at intervals on the bottom of the rectangular mounting shell assembly. A drain pipe assembly is connected obliquely downwards to the end face of the battery box shell away from the electrical component mounting cavity. This utility model has a reasonable structure, facilitating the drainage of leaked electrolyte for unified treatment and extending the service life of the battery box.

Description

Technical Field

[0001] This utility model relates to the field of battery box technology, and in particular to a battery box. Background Technology

[0002] A battery box is a housing structure used to store batteries. It is widely used in new energy fields (such as high-speed rail), and its design must take into account multiple requirements such as safety, durability, and heat dissipation. A battery box consists of an outer shell and a battery module mounting enclosure inside. The outer shell is often made of aluminum alloy, steel, or composite materials (such as carbon fiber), balancing strength and lightweight. The surface of the outer shell is often treated with anti-corrosion measures (such as electrophoresis or spraying). The battery module mounting enclosure serves to secure the battery modules.

[0003] Regarding the aforementioned technologies, the inventors discovered that after prolonged use, the sealing strips of the battery casing age, the welds crack, and long-term vibration accelerates the seal failure, causing the electrolyte to slowly seep out. Existing battery boxes cannot collect and process the electrolyte in a unified manner, resulting in the electrolyte corroding the inner wall of the outer casing and the fixed casing for a long time, thus shortening the service life of the battery box. Utility Model Content

[0004] The main technical problem solved by this utility model is to provide a battery box that facilitates the drainage of leaked electrolyte for unified treatment, thereby extending the service life of the battery box.

[0005] To solve the above-mentioned technical problems, the present invention adopts a technical solution as follows: a battery box is provided, including: a battery box shell and a sealing cover plate assembly hinged to the upper opening side thereon, wherein the inner cavity of the battery box shell is provided with a battery placement cavity and an electrical component mounting cavity, and the bottom of the battery placement cavity is inclined downward at one corner away from the electrical component mounting cavity;

[0006] The inner wall of the battery placement cavity is connected with several vertical tubes at intervals. A rectangular mounting housing assembly is provided inside the battery placement cavity. The rectangular mounting housing assembly is in contact with the vertical tubes. A through gap cavity is provided between the periphery of the rectangular mounting housing assembly and the inner wall of the battery placement cavity. The bottom of the rectangular mounting housing assembly does not contact the bottom of the battery placement cavity. The bottom of the rectangular mounting housing assembly is provided with at least two through holes at intervals.

[0007] A drain pipe assembly is connected to the end face of the battery box housing that is away from the electrical component mounting cavity, which is suitable for draining the liquid inside the battery box housing.

[0008] By adopting the above technical solution, during use, the battery module is fixed in the inner cavity of the rectangular mounting housing assembly, and the electrical components for control are installed inside the electrical component mounting cavity. A sealing cover assembly is then placed over the top opening of the battery housing to seal the battery module and electrical components. Over time, factors such as aging of the battery casing sealing strip, cracking of welds, or accelerated seal failure due to long-term vibration can cause electrolyte to slowly seep out. The bottom of the rectangular mounting housing assembly has at least two through holes spaced apart to allow the leaked electrolyte to flow through these holes to the bottom of the battery housing, reducing electrolyte corrosion of the rectangular mounting housing assembly. Furthermore, the bottom of the battery placement cavity... The rectangular mounting housing assembly is angled downwards at one corner away from the electrical component mounting cavity, and the bottom of the rectangular mounting housing assembly does not contact the bottom of the battery placement cavity. This allows the electrolyte to flow along the bottom of the battery placement cavity towards the same corner. The use of the drain pipe assembly facilitates the discharge of electrolyte from the battery box housing for unified treatment, preventing long-term corrosion of the inner wall of the battery box housing and the rectangular mounting housing assembly by the electrolyte, thus extending the service life of the battery box. Because there is a through gap cavity between the periphery of the rectangular mounting housing assembly and the inner wall of the battery placement cavity, heat can flow vertically, improving heat dissipation. At the same time, the existence of the through gap cavity provides the battery box with a certain collision buffer space, enhancing the safety of use.

[0009] In a preferred embodiment, the present invention can be further configured as follows: the inner cavity of the battery box housing is connected with a plurality of support tubes at intervals, the support tubes do not contact the bottom wall of the battery placement cavity, the rectangular mounting housing assembly is placed on the support tubes, the rectangular mounting housing assembly includes a rectangular housing with an opening at the top, square tubes are respectively connected to the upper periphery of the rectangular housing, adjacent square tubes are fixedly connected end to end, and the bottom of the rectangular housing is provided with not less than two through holes at intervals.

[0010] By adopting the above technical solution, square tubes are fixed to the upper periphery of the rectangular shell, and adjacent square tubes are fixedly connected end to end, which enhances the structural strength of the rectangular mounting shell assembly. Since the support tube does not contact the bottom wall of the battery placement cavity, the support tube will not obstruct the flow of electrolyte, and the support tube plays a supporting role for the rectangular mounting shell assembly.

[0011] In a preferred embodiment, the present invention can be further configured such that: the two side walls of the battery box housing are respectively provided with a plurality of ventilation hole groups, the outer side of the ventilation hole groups are respectively provided with protective covers fixed on the battery box housing, the inner surface of the protective covers is connected with a fireproof expansion plate, and the ventilation hole groups include a plurality of waist-shaped holes arranged in a rectangular array.

[0012] By adopting the above technical solution, the inner cavity of the battery box shell is connected to the outside through the waist-shaped holes on the vent group, which facilitates the dissipation of heat generated by the battery module to the outside and enhances the heat dissipation effect. The use of the protective cover has the functions of waterproofing and dustproofing. When the outside is exposed to high temperature or open flame, the fireproof expansion plate expands to seal the waist-shaped holes, preventing external heat from entering the inner cavity of the battery box shell through the waist-shaped holes.

[0013] In a preferred embodiment, the present invention can be further configured as follows: the drain pipe assembly includes a fixing block and an L-shaped drain pipe body passing through the fixing block. One end of the L-shaped drain pipe body is connected obliquely downward to the end face of the battery box housing away from the electrical component mounting cavity, and the other end is connected to a switch valve. An L-shaped plate is connected to the battery box housing, and a C-shaped tube is connected to the lower surface of the L-shaped plate. The outer end of the C-shaped tube is connected to the fixing block.

[0014] By adopting the above technical solution, the L-shaped drain pipe is fixed by the interaction of the L-shaped plate, C-shaped tube and fixing block. The switch valve is operated to keep it in an open state, so that the electrolyte in the battery box housing can be discharged from the L-shaped drain pipe.

[0015] In a preferred embodiment, the present invention can be further configured as follows: the sealing cover assembly includes a cover body, a plurality of hinges are spaced apart on one side of the cover body, the hinges are connected to the side of the battery box housing, a plurality of latches are spaced apart on the upper surface of the cover body away from the hinges, and a handle is connected between adjacent latches.

[0016] The hinge includes an L-shaped frame, a transition block, a rotating block, and a U-shaped plate. The L-shaped frame is connected to the cover plate body, the U-shaped plate is connected to the side of the battery box housing, the L-shaped frame and the rotating block are connected by screws, the U-shaped plate and the transition block are connected by screws, and one end of the rotating block is connected to a pin. One end of the pin passes through the transition block and is rotatably connected.

[0017] By adopting the above technical solution, since the cover plate is connected to the battery box housing through a hinge, the flip cover plate closes to the opening of the battery box housing, that is, the pin rotates in the transition block, and the flip cover plate seals the battery box housing.

[0018] In a preferred embodiment, the present invention can be further configured such that a sealing strip is fitted around the top opening edge of the battery box housing.

[0019] By adopting the above technical solution and using a sealing strip, the sealing performance of the connection between the sealing cover assembly and the upper opening of the battery box housing is enhanced.

[0020] In summary, this utility model has at least one of the following beneficial technical effects:

[0021] 1. The bottom of the rectangular mounting housing assembly is provided with at least two through holes at intervals, which facilitate the electrolyte leaking from the battery module to flow out into the battery placement cavity through the through holes. The electrolyte is collected and smoothly discharged for unified treatment by the interaction of the drain pipe assembly connected to the battery box housing, which is set at one corner of the bottom of the battery placement cavity away from the electrical component mounting cavity.

[0022] 2. The waist-shaped holes on the vent assembly connect the inner cavity of the battery box housing to the outside, facilitating the dissipation of heat generated by the battery module and enhancing heat dissipation. The protective cover provides waterproofing and dustproofing. When exposed to high temperatures or open flames, the fireproof expansion plate expands to seal the waist-shaped holes, preventing external heat from entering the inner cavity of the battery box housing through them. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0024] Figure 1 This is a schematic diagram of a preferred embodiment of a battery box according to the present invention.

[0025] Figure 2 yes Figure 1 Sectional view along line AA.

[0026] Figure 3 yes Figure 2 A schematic diagram of the structure of the central sealing cover assembly.

[0027] Figure 4 yes Figure 2 A schematic diagram of the rectangular mounting housing assembly.

[0028] In the diagram: 1. Battery box housing; 20. Sealing cover assembly; 3. Battery placement cavity; 4. Electrical component mounting cavity; 50. Rectangular mounting housing assembly; 6. Through gap cavity; 70. Drainage pipe assembly; 8. Support pipe; 90. Vent hole assembly; 11. Protective cover; 12. Fireproof expansion plate; 13. Sealing strip; 14. Vertical pipe; 15. Through hole;

[0029] 21. Cover plate; 22. Hinge; 23. Handle; 24. Lock; 221. L-shaped frame; 222. Transition block; 223. U-shaped plate; 224. Rotating block; 225. Pin;

[0030] 51. Rectangular shell; 52. Square tube;

[0031] 71. Fixing block; 72. L-shaped drain pipe body; 73. Switch valve; 74. L-shaped plate; 75. C-shaped pipe;

[0032] 91. Waist-shaped hole. Detailed Implementation

[0033] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0034] It should be noted that these figures are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0035] Reference Figures 1-4 The present invention discloses a battery box, comprising: a battery box shell 1 and a sealing cover assembly 20 hinged to the upper opening side thereon. The inner cavity of the battery box shell 1 is provided with a battery placement cavity 3 and an electrical component mounting cavity 4. The bottom of the battery placement cavity 3 is inclined downward at one corner away from the electrical component mounting cavity 4.

[0036] The inner wall of the battery placement cavity 3 is connected with several vertical tubes 14 at intervals. A rectangular mounting housing assembly 50 is provided inside the battery placement cavity 3. The rectangular mounting housing assembly 50 is in contact with the vertical tubes 14. A through gap cavity 6 is provided between the periphery of the rectangular mounting housing assembly 50 and the inner wall of the battery placement cavity 3. The bottom of the rectangular mounting housing assembly 50 does not contact the bottom of the battery placement cavity 3. The bottom of the rectangular mounting housing assembly 50 is provided with at least two through holes 15 at intervals.

[0037] The inner cavity of the battery housing 1 is connected with several support tubes 8 at intervals. The support tubes 8 do not contact the bottom wall of the battery placement cavity 3. The rectangular mounting housing assembly 50 is placed on the support tubes 8. The rectangular mounting housing assembly 50 includes a rectangular housing 51 with an open top. Square tubes 52 are connected to the upper periphery of the rectangular housing 51. Adjacent square tubes 52 are fixed end to end. The bottom of the rectangular housing 51 is provided with at least two through holes 15 at intervals. The square tubes 52 are fixed to the upper periphery of the rectangular housing 51, and adjacent square tubes 52 are fixed end to end, which enhances the structural strength of the rectangular mounting housing assembly 50. Since the support tubes 8 do not contact the bottom wall of the battery placement cavity 3, the support tubes 8 do not obstruct the flow of electrolyte. The support tubes 8 provide support for the rectangular mounting housing assembly 50.

[0038] The battery box housing 1 has several vent groups 90 spaced apart on both sides. A protective cover 11 fixed to the battery box housing 1 is provided on the outer side of each vent group 90. A fireproof expansion plate 12 is connected to the inner surface of the protective cover 11. The vent group 90 includes several rectangular arrays of waist-shaped holes 91. Through the waist-shaped holes 91 on the vent group 90, the inner cavity of the battery box housing 1 is connected to the outside, which facilitates the dissipation of heat generated by the battery module to the outside and enhances the heat dissipation effect. The protective cover 11 has the functions of waterproofing and dustproofing. When the outside is exposed to high temperature or open flame, the fireproof expansion plate 12 expands to seal the waist-shaped holes 91, preventing external heat from entering the inner cavity of the battery box housing 1 through the waist-shaped holes 91.

[0039] A drain pipe assembly 70 is connected obliquely to the end face of the battery box housing 1 away from the electrical component mounting cavity 4, which is suitable for draining the liquid inside the battery box housing 1. The drain pipe assembly 70 includes a fixing block 71 and an L-shaped drain pipe body 72 passing through the fixing block 71. One end of the L-shaped drain pipe body 72 is connected obliquely to the end face of the battery box housing 1 away from the electrical component mounting cavity 4, and the other end is connected to a switch valve 73. An L-shaped plate 74 is connected to the battery box housing 1. A C-shaped tube 75 is connected to the lower surface of the L-shaped plate 74. The outer end of the C-shaped tube 75 is connected to the fixing block 71. Through the interaction of the L-shaped plate 74, the C-shaped tube 75 and the fixing block 71, the L-shaped drain pipe body 72 is fixed. The switch valve 73 is operated to open it, so that the L-shaped drain pipe body 72 can drain the electrolyte inside the battery box housing 1.

[0040] The sealing cover assembly 20 includes a cover body 21. A plurality of hinges 22 are spaced apart on one side of the cover body 21. The hinges 22 are connected to the side of the battery housing 1. A plurality of latches 24 are spaced apart on the upper surface of the cover body 21 away from the hinges 22. A handle 23 is connected between adjacent latches 24. The hinges 22 include an L-shaped frame 221, a transition block 222, a rotating block 224, and a U-shaped plate 223. The L-shaped frame 221 is connected to the cover body 21, and the U-shaped plate 223 is connected to the battery housing 1. The side connection is such that the L-shaped frame 221 and the rotating block 224 are connected by screws, and the U-shaped plate 223 and the transition block 222 are connected by screws. One end of the rotating block 224 is connected to a pin 225, and one end of the pin 225 passes through the transition block 222 and is rotatably connected. Since the cover plate 21 is connected to the battery box housing 1 through the hinge 22, the flip cover plate 21 covers the opening of the battery box housing 1, that is, the pin 225 rotates in the transition block 222, and the flip cover plate 21 seals the battery box housing 1.

[0041] A sealing strip 13 is fitted around the top opening edge of the battery box housing 1; the use of the sealing strip 13 enhances the sealing performance of the connection between the sealing cover assembly 20 and the upper opening of the battery box housing 1.

[0042] The implementation principle of this embodiment is as follows: During use, the battery module is fixed in the inner cavity of the rectangular mounting housing assembly 50, and the electrical components for control are installed inside the electrical component mounting cavity 4. The sealing cover assembly 20 covers the top opening of the battery housing 1, thereby sealing the battery module and electrical components. Over time, factors such as aging of the battery casing sealing strip, cracking of welds, or accelerated seal failure due to long-term vibration can cause electrolyte to slowly seep out. The bottom of the rectangular mounting housing assembly 50 is provided with at least two through holes 15 at intervals, allowing the electrolyte seeping from the battery module to flow through the through holes 15 to the bottom of the battery housing 1, reducing the corrosion of the rectangular mounting housing assembly 50 by the electrolyte. Because the bottom of the battery placement cavity 3... The rectangular mounting housing assembly 50 is tilted downwards at one corner away from the electrical component mounting cavity 4, and the bottom of the rectangular mounting housing assembly 50 does not contact the bottom of the battery placement cavity 3. This allows the electrolyte to flow along the bottom of the battery placement cavity 3 towards the same corner. The use of the drain pipe assembly 70 facilitates the discharge of electrolyte from the battery box housing 1 for unified treatment, preventing the inner wall of the battery box housing 1 and the rectangular mounting housing assembly 50 from being corroded by the electrolyte for a long time, thus extending the service life of the battery box. Since there is a through gap cavity 6 between the periphery of the rectangular mounting housing assembly 50 and the inner wall of the battery placement cavity 3, it facilitates the vertical flow of heat, improving the heat dissipation effect. At the same time, the existence of the through gap cavity 6 provides the battery box with a certain collision buffer space, enhancing the safety of use.

[0043] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made using the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A battery box, characterized in that, include: The battery box housing (1) and the sealing cover assembly (20) hinged to the upper opening side are provided with a battery placement cavity (3) and an electrical component mounting cavity (4) in the inner cavity of the battery box housing (1). The bottom of the battery placement cavity (3) is inclined downward at one corner away from the electrical component mounting cavity (4). The inner wall of the battery placement cavity (3) is connected with several vertical tubes (14) at intervals. The battery placement cavity (3) is provided with a rectangular mounting housing assembly (50). The rectangular mounting housing assembly (50) is in contact with the vertical tubes (14). A through gap cavity (6) is provided between the periphery of the rectangular mounting housing assembly (50) and the inner wall of the battery placement cavity (3). The bottom of the rectangular mounting housing assembly (50) is not in contact with the bottom of the battery placement cavity (3). The bottom of the rectangular mounting housing assembly (50) is provided with at least two through holes (15) at intervals. The battery box housing (1) is connected to a drain pipe assembly (70) at an angle below the end face away from the electrical component mounting cavity (4), which is suitable for draining the liquid inside the battery box housing (1).

2. The battery pack of claim 1, wherein, The inner cavity of the battery box housing (1) is connected with several support tubes (8) at intervals. The support tubes (8) do not contact the bottom wall of the battery placement cavity (3). The rectangular mounting housing assembly (50) is placed on the support tubes (8). The rectangular mounting housing assembly (50) includes a rectangular housing (51) with an opening at the top. Square tubes (52) are connected to the upper periphery of the rectangular housing (51). The adjacent square tubes (52) are fixedly connected end to end. The bottom of the rectangular housing (51) is provided with at least two through holes (15) at intervals.

3. The battery pack of claim 1, wherein, The battery box housing (1) has several vent holes (90) spaced apart on both sides. The outer side of each vent hole group (90) is provided with a protective cover (11) fixed on the battery box housing (1). The inner surface of the protective cover (11) is connected with a fireproof expansion plate (12). The vent hole group (90) includes several waist-shaped holes (91) arranged in a rectangular array.

4. The battery pack of claim 1, wherein, The drain pipe assembly (70) includes a fixing block (71) and an L-shaped drain pipe body (72) passing through the fixing block (71). One end of the L-shaped drain pipe body (72) is connected to the end face of the battery box housing (1) away from the electrical component mounting cavity (4) at an angle below, and the other end is connected to a switch valve (73). An L-shaped plate (74) is connected to the battery box housing (1), and a C-shaped tube (75) is connected to the lower surface of the L-shaped plate (74). The outer end of the C-shaped tube (75) is connected to the fixing block (71).

5. The battery pack of claim 1, wherein, The sealing cover assembly (20) includes a cover body (21), a plurality of hinges (22) are spaced apart on one side of the cover body (21), the hinges (22) are connected to the side of the battery box housing (1), a plurality of latches (24) are spaced apart on the upper surface of the cover body (21) away from the hinges (22), and a handle (23) is connected between adjacent latches (24). The hinge (22) includes an L-shaped frame (221), a transition block (222), a rotating block (224), and a U-shaped plate (223). The L-shaped frame (221) is connected to the cover plate (21), and the U-shaped plate (223) is connected to the side of the battery box housing (1). The L-shaped frame (221) and the rotating block (224) are connected by screws, and the U-shaped plate (223) and the transition block (222) are connected by screws. One end of the rotating block (224) is connected to a pin (225), and one end of the pin (225) passes through the transition block (222) and is rotatably connected.

6. The battery pack of claim 1, wherein, A sealing strip (13) is fitted around the top opening edge of the battery box housing (1).

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