Battery cell shipping box and manufacturing method

Abstract

The application discloses a kind of battery transport case and manufacturing method, belong to battery transport technical field, including box and the box cover of lid on the box, the box and the box cover are enclosed to form the accommodating space for placing battery, first venting opening is provided in the box, second venting opening is provided in the box cover, first explosion-proof diaphragm is arranged in the first venting opening, second explosion-proof diaphragm is arranged in the second venting opening, first smoke monitoring alarm is arranged in the box, first smoke monitoring alarm is arranged in the first venting opening, second smoke monitoring alarm is arranged in the box cover, second smoke monitoring alarm is arranged in the second venting opening, air pressure balance valve is arranged in the box cover.The application can guarantee the safety and convenience of battery during transportation before and after test, and avoid affecting the technical effect of battery performance.

Description

Technical Field

[0001] This invention belongs to the field of battery cell transportation technology, and specifically relates to a battery cell transportation box and its manufacturing method. Background Technology

[0002] As the core component of energy storage devices, the safety of battery cells during transportation is paramount. Battery cell transport boxes, as specialized packaging for battery cell transport, must meet stringent packaging requirements. They must ensure the safety of the cells during transport, consider the impact of environmental temperature and humidity changes on cell performance, and accommodate both new finished cells and tested, scrapped cells. Current technologies primarily utilize plastic pallets, corrugated cardboard boxes, and wooden frames. However, plastic pallets may not provide sufficient physical protection against impacts and vibrations, corrugated cardboard boxes are easily damaged in humid environments, resulting in insufficient sealing and durability, and while wooden frames offer better structural support, they are heavy and difficult to handle. Since battery cells may experience leakage, short circuits, and other safety hazards due to environmental changes during transport, the aforementioned transport boxes cannot provide effective protection. Furthermore, existing transport boxes lack effective measures for temperature and humidity control, which can easily lead to changes in the open-circuit voltage of the cells, affecting battery performance.

[0003] Therefore, it is necessary to provide a new technical solution to solve the above-mentioned technical problems. Summary of the Invention

[0004] The technical problem to be solved by this invention is that the transport box cannot guarantee the safety and convenience of the battery cells during the transportation process before and after the test, which can easily affect the battery performance.

[0005] To solve the above-mentioned technical problems, the present invention provides a battery cell transport box, which includes a box body and a box cover covering the box body. The box body and the box cover enclose a receiving space for placing battery cells. A first explosion vent is provided in the box body, and a second explosion vent is provided in the box cover. A first explosion-proof diaphragm is provided in the first explosion vent, and a second explosion-proof diaphragm is provided in the second explosion vent. A first smoke detector is provided in the box body, and the first smoke detector is offset from the first explosion vent. A second smoke detector is provided in the box cover, and the second smoke detector is offset from the second explosion vent. A pressure balancing valve is provided in the box cover.

[0006] Optionally, the enclosure includes a front side panel, a left side panel, a rear side panel, and a right side panel connected in sequence, and a bottom side panel connected to the front side panel, the left side panel, the rear side panel, and the right side panel respectively. The rear side panel is rotatably connected to the enclosure cover. The front side panel, the left side panel, the rear side panel, the right side panel, the bottom side panel, and the enclosure cover enclose the accommodating space, wherein the first explosion vent and the first smoke detector are respectively disposed on the rear side panel.

[0007] Optionally, a first light strip is provided on the lid, a second light strip is provided on the front side panel, and a third light strip is provided on the rear side panel, wherein the first light strip, the second light strip, and the third light strip are respectively located within the accommodating space.

[0008] Optionally, a first observation window and a second observation window are respectively provided on the left side panel. The first observation window and the second observation window are arranged sequentially along the bottom side panel near the box cover. A first sealing glass is provided in the first observation window and a second sealing glass is provided in the second observation window.

[0009] Optionally, the first sealing glass includes two layers of first explosion-proof glass and a first PVB layer disposed between the two layers of first explosion-proof glass and connected to the two layers of first explosion-proof glass respectively; the second sealing glass includes two layers of second explosion-proof glass and a second PVB layer disposed between the two layers of second explosion-proof glass and connected to the two layers of second explosion-proof glass respectively.

[0010] Optionally, a flow collecting groove and a drain hole are provided on the bottom side plate. The flow collecting groove is located within the accommodating space and is boat-shaped. The drain hole is located within the flow collecting groove and is provided with a sealing element.

[0011] Optionally, the opening pressure range of the first explosion-proof diaphragm is 0.5MPa±0.2MPa, and the opening pressure range of the second explosion-proof diaphragm is 0.5MPa±0.2MPa.

[0012] Optionally, the battery cell transport box further includes a handle assembly, rollers connected to the box body, and a locking assembly. The handle assembly includes a sliding component slidably connected to the box body, a rolling bearing rotatably connected to the sliding component, and a handle body connected to the rolling bearing. The handle body is located outside the receiving space, the rollers are located outside the receiving space, and the locking assembly is connected to the box body and the box cover respectively, so as to lock the box body and the box cover by means of the locking assembly.

[0013] According to another aspect of the present invention, the present invention also provides a method for manufacturing a battery cell transport box, the method comprising the aforementioned battery cell transport box, and further comprising fabricating a box body and a box lid using martensitic precipitation hardening stainless steel; installing inner linings on the box body and the box lid respectively, wherein the inner linings are filled with high-density polyethylene and diced sponge as cushioning material; machining a first explosion vent on the box body, installing a first explosion-proof diaphragm into the first explosion vent, and installing a first smoke detector alarm on the box body, wherein the first smoke detector alarm... The device is offset from the first explosion vent; a second explosion vent is machined on the box cover, a second explosion-proof diaphragm is installed in the second explosion vent, a second smoke detector is installed on the box cover, and a pressure balancing valve is installed on the box cover. The second smoke detector is offset from the second explosion vent. After the box body and the box cover are rotatably connected, the box body and the box cover enclose a space for placing the battery cells. The first smoke detector and the second smoke detector are located in the space.

[0014] Optionally, the manufacturing method further includes separating an upper placement space and a lower placement space within the accommodating space by a partition; sequentially placing the battery cell into the lower placement space and the upper placement space; wherein the housing is provided with a first observation window and a second observation window respectively, a first sealing glass is installed in the first observation window, the first sealing glass includes two layers of first explosion-proof glass and a first PVB layer disposed between the two layers of first explosion-proof glass and respectively connected to the two layers of first explosion-proof glass, and a second sealing glass is installed in the second observation window, the second sealing glass includes two layers of second explosion-proof glass and a second PVB layer disposed between the two layers of second explosion-proof glass and respectively connected to the two layers of second explosion-proof glass.

[0015] Beneficial effects:

[0016] This invention provides a battery cell transport box. A lid is placed over a body, forming a space for holding the battery cells. A first explosion vent is provided on the body, and a second explosion vent is provided on the lid. A first explosion-proof diaphragm is located at the first explosion vent, and a second explosion-proof diaphragm is located at the second explosion vent. A first smoke detector is located on the body, offset from the first explosion vent. A second smoke detector is located on the lid, offset from the second explosion vent. A pressure balancing valve is located on the lid. During battery cell transport, the lid and body provide a sealed space for transport. Simultaneously, the first and second explosion vents, along with the corresponding first and second explosion-proof diaphragms, constitute a dual pressure relief system for the battery cell transport box. When a battery cell malfunctions, the first and second explosion-proof diaphragms can rapidly rupture under pressure, releasing internal pressure and effectively preventing the box from breaking and the battery cells from being damaged. Furthermore, the first and second smoke detectors provide real-time smoke monitoring for the battery cell transport box. Because the first and second smoke detectors are staggered from the first and second explosion vents, direct exposure to potentially hazardous environments can prevent them from affecting normal operation, thus improving the accuracy and reliability of the monitoring results. The pressure balancing valve not only ensures stable internal pressure, facilitating opening and closing of the box lid, but also prevents external dust, moisture, and other impurities from entering, providing waterproofing and dustproofing. This achieves the technical effect of ensuring the safety and convenience of the battery cells during transportation before and after testing, and avoiding any impact on battery performance. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of a battery cell transport box provided in an embodiment of the present invention.

[0019] Figure 2 This is a schematic diagram of the structure of the first explosion-proof glass in a battery cell transport box provided in an embodiment of the present invention.

[0020] Figure 3 A flowchart illustrating a method for manufacturing a battery cell transport box according to an embodiment of the present invention. Detailed Implementation

[0021] The embodiments of this application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0022] To enable those skilled in the art to better understand the solutions of this application, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0023] In the embodiments of this application, "at least one" refers to one or more; "multiple" refers to two or more. In the description of this application, the terms "first," "second," "third," etc., are used only for the purpose of distinguishing descriptions and should not be construed as indicating or implying relative importance, nor should they be construed as indicating or implying order.

[0024] In this specification, references such as "one embodiment" or "some embodiments" mean that one or more embodiments of this application include the specific features, structures, or characteristics described in connection with that embodiment. Therefore, the terms "comprising," "including," "having," and variations thereof in this specification all mean "including but not limited to," unless otherwise specifically emphasized. It should be noted that in the embodiments of this application, "and / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone.

[0025] It should be noted that, in the embodiments of the present invention, when a component is referred to as being "fixed to" another component, it can be directly on the other component or an intervening component may be present. When a component is considered to be "connected to" another component, it can be directly connected to the other component or an intervening component may be present simultaneously. When a component is considered to be "set on" another component, it can be directly set on the other component or an intervening component may be present simultaneously. Furthermore, in the embodiments of this application, "connection" can also be understood as an electrical connection; the connection between two electrical components can be a direct or indirect connection between the two electrical components. For example, the connection between A and B can be a direct connection between A and B, or an indirect connection between A and B through one or more other electrical components. The terms "vertical," "horizontal," "left," "right," and similar expressions used in the embodiments of the present invention are for illustrative purposes only and are not intended to limit the present invention.

[0026] A battery cell transport box is provided in Embodiment 1 of the present invention. Please refer to [link / reference]. Figures 1 to 2 As shown, Figure 1 This is a schematic diagram of the structure of a battery cell transport box provided in an embodiment of the present invention. Figure 2 This is a schematic diagram of the structure of the first explosion-proof glass in a battery cell transport box provided by an embodiment of the present invention. The battery cell transport box provided by this embodiment of the present invention includes a box body 1 and a box cover 2. The box cover 2 is closed on the box body 1, and the box body 1 and the box cover 2 enclose a receiving space 21 for placing battery cells 8. A first explosion vent 11 is provided on the box body 1, and a second explosion vent 22 is provided on the box cover 2. A first explosion-proof diaphragm 12 is provided on the first explosion vent 11, and a second explosion-proof diaphragm 23 is provided on the second explosion vent 22. A first smoke detector 3 is provided on the box body 1, and the first smoke detector 3 is staggered from the first explosion vent 11. A second smoke detector 31 is provided on the box cover 2, and the second smoke detector 31 is staggered from the second explosion vent 22. A pressure balancing valve 4 is provided on the box cover 2.

[0027] The first explosion-proof diaphragm 12 and the second explosion-proof diaphragm 23 are both made of explosion-proof materials and have a predetermined burst pressure value, enabling them to respond quickly in case of abnormality in the battery cell 8. In case of abnormality, the battery cell 8 can release energy through the first explosion vent 11 and the second explosion vent 22, ensuring that the first explosion-proof diaphragm 12 and the second explosion-proof diaphragm 23 can rupture rapidly when the preset pressure value is reached, effectively dispersing and releasing internal pressure, preventing the housing 1 from rupturing due to excessive pressure, and protecting the battery cell 8 from damage.

[0028] The first smoke detector 3 and the second smoke detector 31 can employ high-sensitivity sensors to monitor the smoke levels inside the battery cell transport box in real time. Because the first smoke detector 3 and the second smoke detector 31 are staggered with their corresponding explosion vents, even in the event of an anomaly inside the box, the first smoke detector 3 and the second smoke detector 31 are effectively prevented from being directly exposed to high temperatures, high pressures, or extremely high smoke concentrations, ensuring the accuracy and reliability of the monitoring results.

[0029] The air pressure balancing valve 4 helps maintain stable internal air pressure in the housing 1 even when the internal air pressure of the battery cell 8 fluctuates due to temperature changes, vibrations, or other factors during transportation. This allows operators to easily open or close the housing cover 2 when needed. Furthermore, the air pressure balancing valve 4 also provides dust and water resistance, effectively preventing external impurities from entering the housing and enhancing the safety and reliability of the battery cell transport housing.

[0030] In this embodiment, by covering the box cover 2 on the box body 1, the box body 1 and the box cover 2 enclose a receiving space 21 for placing the battery cell 8. A first explosion vent 11 is provided on the box body 1, a second explosion vent 22 is provided on the box cover 2, a first explosion-proof diaphragm 12 is arranged at the first explosion vent 11, a second explosion-proof diaphragm 23 is arranged at the second explosion vent 22, a first smoke detection alarm 3 is arranged on the box body 1, the first smoke detection alarm 3 is arranged in a staggered manner with the first explosion vent 11, a second smoke detection alarm 31 is arranged on the box cover 2, and the second smoke detection alarm 31 is arranged in a staggered manner with the second explosion vent 22. A pressure balance valve 4 is arranged on the box cover 2. In this way, during the transportation of the battery cell 8, the box cover 2 and the box body 1 provide a sealed receiving space 21 for the battery cell 8 for transportation. At the same time, through the first explosion vent 11 and the second explosion vent 22, as well as the first explosion-proof diaphragm 12 and the second explosion-proof diaphragm 23 respectively supporting the first explosion vent 11 and the second explosion vent 22, a double pressure relief of the battery cell transport box is formed. When the battery cell 8 shows an abnormality, the first explosion-proof diaphragm 12 and the second explosion-proof diaphragm 23 can quickly rupture under the action of pressure to release the internal pressure, effectively preventing the box body 1 from rupturing and the battery cell 8 from being damaged. And the first smoke detection alarm 3 and the second smoke detection alarm 31 can provide real-time smoke monitoring for the battery cell transport box. Since the first smoke detection alarm 3 is arranged in a staggered manner with the first explosion vent 11 and the second smoke detection alarm 31 is arranged in a staggered manner with the second explosion vent 22, it can avoid affecting the normal operation of the first smoke detection alarm 3 and the second smoke detection alarm 31 due to being directly exposed to a potentially dangerous environment, which is beneficial to improving the accuracy and reliability of the monitoring results. And through the pressure balance valve 4, not only the internal air pressure of the box body 1 is ensured to be stable, which is convenient for opening the box cover 2 or closing the box cover 2 with the box body 1, but also it is beneficial to prevent external impurities such as dust and water vapor from entering to prevent dust and water. Thus, the technical effect of being able to ensure the safety and convenience of the battery cell 8 during the transportation before and after the test and avoiding affecting the battery performance is achieved.

[0031] In one embodiment, the enclosure 1 includes a front side panel 13, a left side panel 14, a rear side panel 15, a right side panel 16, and a bottom side panel 17. The front side panel 13, left side panel 14, rear side panel 15, and right side panel 16 are connected sequentially. The bottom side panel 17 is connected to the front side panel 13, left side panel 14, rear side panel 15, and right side panel 16. The rear side panel 15 is rotatably connected to the enclosure lid 2. The front side panel 13, left side panel 14, rear side panel 15, right side panel 16, bottom side panel 17, and enclosure lid 2 enclose a receiving space 21. A first explosion vent 11 and a first smoke detector 3 are respectively located on the rear side panel 15. The rear side panel 15 and enclosure lid 2 can be rotatably connected via hinges, allowing the enclosure lid 2 to be easily opened or closed. The front panel 13, left side panel 14, rear side panel 15, right side panel 16, bottom side panel 17, and lid 2 together form a closed receiving space 21, which is used to safely house the battery cell 8. If an abnormality occurs during transportation of the battery cell 8, causing an increase in internal pressure or the generation of smoke, the first explosion-proof diaphragm 12 will rupture rapidly under pressure, releasing the internal pressure and preventing the housing 1 from breaking. Simultaneously, the first smoke detector 3 can monitor smoke in real time and issue an alarm, reminding operators to handle the situation promptly. Because the first smoke detector 3 is staggered from the first explosion vent 11, it avoids direct exposure to potentially hazardous environments, thus improving the accuracy and reliability of the monitoring results.

[0032] In some embodiments, the first light strip 5 is disposed on the cover 2, the second light strip 51 is disposed on the front side panel 13, and the third light strip 52 is disposed on the rear side panel 15. The first light strip 5, the second light strip 51, and the third light strip 52 are respectively located inside the accommodating space 21. The first light strip 5, the second light strip 51, and the third light strip 52 can all be LED lights. By setting the first light strip 5, the second light strip 51, and the third light strip 52, the operator can more easily observe the transportation status of the battery cell 8. Especially in environments with insufficient light, the combined use of the first light strip 5, the second light strip 51, and the third light strip 52 is used to provide internal lighting or indication for the battery cell transport box, which helps to improve the convenience and safety of operation.

[0033] In some embodiments, the first observation window 141 and the second observation window 142 are respectively disposed on the left side plate 14, and the first observation window 141 and the second observation window 142 are arranged sequentially along the bottom side plate 17 near the box cover 2. A first sealing glass 1411 is provided in the first observation window 141, and a second sealing glass is provided in the second observation window 142. By providing the first observation window 141, the second observation window 142, the first sealing glass 1411, and the second sealing glass, the operator can directly observe the transportation status of the battery cell 8 without opening the box cover 2, avoiding safety hazards caused by frequently opening the box cover 2. At the same time, the first sealing glass 1411 and the second sealing glass can also ensure the airtightness of the battery cell transportation box, preventing external dust, moisture, and other impurities from entering the box.

[0034] In some embodiments, the first sealing glass 1411 includes two layers of first explosion-proof glass 14111 and a first PVB layer 14112 disposed between the two layers of first explosion-proof glass 14111. The first PVB layer 14112 is a polyvinyl butyral layer, and it is connected to both layers of first explosion-proof glass 14111. The second sealing glass includes two layers of second explosion-proof glass and a second PVB layer, which is disposed between the two layers of second explosion-proof glass and connected to both layers of second explosion-proof glass. By using explosion-proof glass and a PVB layer, the strength and explosion-proof performance of the sealing glass are significantly improved. Even if the battery cell 8 experiences an abnormality during transportation, leading to increased internal pressure or impact, the sealing glass can withstand the pressure and maintain its integrity, thus protecting the overall safety of the observation window and the battery cell transport box.

[0035] In some embodiments, a collection trough and a drain hole are respectively provided on the bottom side plate 17. The collection trough is located inside the receiving space 21 and is boat-shaped. The drain hole is located inside the collection trough and is equipped with a seal, including a bolt with a sealing ring. Installing the bolt with the sealing ring onto the drain hole can seal the drain hole. The collection trough, located inside the receiving space 21, is boat-shaped and can be used to collect liquids such as electrolyte that may leak. The drain hole, located inside the collection trough, is equipped with a seal to ensure the sealing and safety of the drain hole. By providing the collection trough and drain hole, the battery cell transport box can better cope with possible leakage of the battery cell 8 during transportation. When liquids such as electrolyte leak, they will be collected in the collection trough and discharged out of the box through the drain hole, which can prevent the electrolyte from corroding and damaging the battery cell 8 and other components. At the same time, the sealing components also ensure the sealing of the drain hole, preventing external dust, moisture and other impurities from entering the box, which helps to improve the safety and reliability of the battery cell transport box.

[0036] In some embodiments, the opening pressure range of the first explosion-proof diaphragm 12 is 0.5MPa±0.2MPa, and the opening pressure range of the second explosion-proof diaphragm 23 is 0.5MPa±0.2MPa. This ensures that when an abnormality occurs in the battery cell 8 during transportation, such as a sharp increase in internal pressure, the first explosion-proof diaphragm 12 and the second explosion-proof diaphragm 23 can rupture rapidly within the predetermined pressure range, effectively releasing the internal pressure and preventing the housing 1 from rupturing due to unbearable pressure, thereby protecting the battery cell 8 from damage. During the transportation of the battery cell 8, if the internal pressure of the battery cell 8 increases due to short circuits, overheating, or other reasons, when the pressure reaches or exceeds the opening pressure range of the first explosion-proof diaphragm 12 and the second explosion-proof diaphragm 23, the explosion-proof diaphragms will rupture rapidly, releasing the internal pressure. This not only helps prevent the housing 1 from rupturing but also effectively slows down or prevents further damage to the battery cell 8. Meanwhile, because the first smoke detector 3 and the second smoke detector 31 are staggered from the first explosion vent 11 and the second explosion vent 22, respectively, they can avoid being affected by direct exposure to potentially hazardous environments, thus ensuring the accuracy and reliability of monitoring results. The battery cell transport box can ensure the safety of the battery cell 8 and prevent damage to the battery cell 8 from affecting battery performance.

[0037] In some embodiments, the battery cell transport box provided by this invention further includes a handle assembly 6, rollers 7, and a locking assembly. The handle assembly 6 includes a sliding component 61, a rolling bearing 62, and a handle body 63. The sliding component 61 is slidably connected to the box body 1, the rolling bearing 62 is rotatably connected to the sliding component 61, and the handle body 63 is connected to the rolling bearing 62, located outside the accommodating space 21. The rollers 7 are connected to the box body 1, and there can be four rollers 7, which are respectively installed at the four corners of the bottom side plate 17 of the box body 1. The locking assembly is connected to the box body 1 and the box cover 2 respectively, so as to lock the box body 1 and the box cover 2. For example, the locking assembly may include a padlock, the lock body of which is equipped with a ring-shaped or straight locking beam that can be engaged, so that the padlock is directly engaged with the lock body through the locking beam to form a closed lock. Alternatively, the locking assembly may include a lock plate lock, which includes a lock body, a bolt, a lock cylinder, and a lock plate fixed to the housing 1 or the cover 2. The bolt is inserted into a hole or groove in the lock plate, and the lock is locked or unlocked by rotating the lock cylinder. Those skilled in the art will understand that the specific structure of the sliding component 61 in the battery cell transport box provided in this embodiment of the invention is not limited. It is only necessary to achieve a sliding connection between the sliding component 61 and the housing 1, and for the sliding component 61 to slide up and down on the side of the housing 1. For example, a slot may be provided on the side of the housing 1, with one end of the sliding component 61 embedded in the slot for sliding connection, and the other end of the sliding component 61 connected to the rolling bearing 62. Those skilled in the art will understand that the specific structure of the rolling bearing 62 in the battery cell transport box provided in this embodiment of the invention is not limited. It is sufficient that the rolling bearing 62 is rotatably connected to the sliding component 61 and the handle body 63 respectively, and that the handle body 63 and the sliding component 61 rotate relative to each other via the rolling bearing 62. For example, the inner ring of the rolling bearing 62 is connected to the sliding component 61, and the outer ring of the rolling bearing 62 is connected to the handle body 63. Operators can easily grip and move the battery cell transport box via the handle assembly 6, and the rollers 7 allow the battery cell transport box to roll and move flexibly on the ground, which helps reduce transportation difficulty and labor intensity. Simultaneously, the locking assembly can firmly lock the box body 1 and the box cover 2, preventing the battery cell 8 from falling off or being damaged during transportation due to bumps or collisions. This not only improves the practicality and convenience of the battery cell transport box but also enhances its safety and reliability. The battery cell transport box can better meet the safety and convenience requirements of the battery cell 8 during transportation before and after testing, avoiding situations that affect battery performance.

[0038] To provide a detailed description of the manufacturing method of a battery cell transport box provided by the present invention, the above embodiment 1 provides a detailed description of a battery cell transport box. Based on the same inventive concept, this application also provides a manufacturing method of a battery cell transport box, as detailed in embodiment 2.

[0039] Please see Figure 3, Figure 3 This is a flowchart illustrating a method for manufacturing a battery cell transport box according to an embodiment of the present invention. Embodiment two of the present invention provides a method for manufacturing a battery cell transport box, including the aforementioned battery cell transport box, and further comprising the following steps:

[0040] S100, the box body 1 and the box cover 2 are made of martensitic precipitation hardening stainless steel.

[0041] S200, inner linings are installed on the box body 1 and the box cover 2 respectively. The inner lining is filled with high-density polyethylene and cut sponge as cushioning material.

[0042] S300, a first explosion relief port 11 is machined on the housing 1, a first explosion-proof diaphragm 12 is installed in the first explosion relief port 11, and a first smoke detector 3 is installed on the housing 1. The first smoke detector 3 and the first explosion relief port 11 are arranged in a staggered manner.

[0043] S400, a second explosion vent 22 is machined on the box cover 2, a second explosion-proof diaphragm 23 is installed in the second explosion vent 22, a second smoke detector 31 is installed on the box cover 2, and a pressure balance valve 4 is installed on the box cover 2. The second smoke detector 31 and the second explosion vent 22 are arranged in a staggered manner.

[0044] S500, after the box body 1 and the box cover 2 are rotatably connected, the box body 1 and the box cover 2 form a receiving space 21 for placing the battery cell 8, and the first smoke detector 3 and the second smoke detector 31 are located in the receiving space 21.

[0045] Embodiment 2 of the present invention provides a method for manufacturing a battery cell transport box, which further includes separating an upper placement space and a lower placement space within the accommodating space 21 by a partition; placing the battery cell 8 sequentially into the lower placement space and the upper placement space; wherein the box body 1 is respectively provided with a first observation window 141 and a second observation window 142, a first sealing glass 1411 is installed in the first observation window 141, the first sealing glass 1411 includes two layers of first explosion-proof glass 14111 and a first PVB layer 14112 disposed between the two layers of first explosion-proof glass 14111 and respectively connected to the two layers of first explosion-proof glass 14111, and a second sealing glass is installed in the second observation window 142, the second sealing glass includes two layers of second explosion-proof glass and a second PVB layer disposed between the two layers of second explosion-proof glass and respectively connected to the two layers of second explosion-proof glass. Those skilled in the art will understand that the specific structure of the partition is not limited in the manufacturing method of the battery cell transport box provided in Embodiment 2 of the present invention. It is only necessary to separate the upper and lower placement spaces within the accommodating space 21 through the partition.

[0046] The present invention provides a manufacturing method for a battery cell transport box. By using martensitic precipitation hardening stainless steel materials, the box body 1 and the box cover 2 are respectively fabricated. Liners are installed on the box body 1 and the box cover 2. High-density polyethylene and cut sponge are used as filling and buffering materials inside the liners. A first explosion vent 11 is processed on the box body 1, and a first explosion-proof diaphragm 12 is installed into the first explosion vent 11. And a first smoke sensor monitoring alarm 3 is installed on the box body 1. The first smoke sensor monitoring alarm 3 and the first explosion vent 11 are arranged in a staggered manner. A second explosion vent 22 is processed on the box cover 2, and a second explosion-proof diaphragm 23 is installed into the second explosion vent 22. And a second smoke sensor monitoring alarm 31 is installed on the box cover 2. And a pressure balance valve 4 is installed on the box cover 2. The second smoke sensor monitoring alarm 31 and the second explosion vent 22 are arranged in a staggered manner. After the box body 1 and the box cover 2 are rotatably connected, an accommodation space 21 for placing the battery cell 8 is formed by enclosing the box body 1 and the box cover 2. The first smoke sensor monitoring alarm 3 and the second smoke sensor monitoring alarm 31 are located inside the accommodation space 21. In this way, during the transportation of the battery cell 8, the box cover 2 and the box body 1 provide a sealed accommodation space 21 for the battery cell 8 for transportation. At the same time, through the first explosion vent 11 and the second explosion vent 22, and the first explosion-proof diaphragm 12 and the second explosion-proof diaphragm 23 respectively matching with the first explosion vent 11 and the second explosion vent 22, a double pressure relief of the battery cell transport box is constituted. When an abnormality occurs to the battery cell 8, the first explosion-proof diaphragm 12 and the second explosion-proof diaphragm 23 can quickly rupture under the action of pressure to release the internal pressure, effectively preventing the box body 1 from rupturing and the battery cell 8 from being damaged. And the first smoke sensor monitoring alarm 3 and the second smoke sensor monitoring alarm 31 can provide real-time smoke monitoring for the battery cell transport box. Since the first smoke sensor monitoring alarm 3 and the first explosion vent 11 are arranged in a staggered manner, and the second smoke sensor monitoring alarm 31 and the second explosion vent 22 are arranged in a staggered manner, it can be avoided that the normal operation of the first smoke sensor monitoring alarm 3 and the second smoke sensor monitoring alarm 31 is affected due to being directly exposed to a potentially dangerous environment, which is beneficial to improving the accuracy and reliability of the monitoring results. And through the pressure balance valve 4, not only the internal air pressure of the box body 1 is ensured to be stable, which is convenient for opening the box cover 2 or closing the box cover 2 and the box body 1, but also it is beneficial to prevent external impurities such as dust and water vapor from entering to prevent water and dust. Thus, the technical effect of being able to ensure the safety and convenience of the battery cell 8 during the transportation before and after the test and avoiding affecting the battery performance is achieved.

[0047] Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the examples, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A battery cell transport box, characterized in that, The battery cell transport box includes a box body and a box cover that fits onto the box body. The box body and the box cover together form a space for placing battery cells. A first explosion vent is provided in the box body, and a second explosion vent is provided in the box cover. A first explosion-proof diaphragm is provided in the first explosion vent, and a second explosion-proof diaphragm is provided in the second explosion vent. A first smoke detector is provided in the box body, offset from the first explosion vent. A second smoke detector is provided in the box cover, offset from the second explosion vent. A pressure balancing valve is provided in the box cover. The box body includes a front side plate, a left side plate, a rear side plate, and a right side plate connected in sequence, and a bottom side plate connected to the front side plate, the left side plate, the rear side plate, and the right side plate respectively. The rear side plate is rotatably connected to the box cover. The front side plate, the left side plate, the rear side plate, and the right side plate are connected in sequence. The enclosure space is enclosed by the plate, the rear side plate, the right side plate, the bottom side plate, and the lid. The first explosion vent and the first smoke detector are respectively disposed on the rear side plate. A collection groove and a drain hole are provided on the bottom side plate. The collection groove is located within the enclosure space and is boat-shaped. The drain hole is located within the collection groove and is provided with a sealing element. The battery cell transport box also includes a handle assembly, rollers connected to the box body, and a locking assembly. The handle assembly includes a sliding component slidably connected to the box body, a rolling bearing rotatably connected to the sliding component, and a handle body connected to the rolling bearing. The handle body is located outside the enclosure space, and the rollers are located outside the enclosure space. The locking assembly is connected to the box body and the lid respectively to lock the box body and the lid.

2. The battery cell transport box according to claim 1, characterized in that, A first light strip is provided on the lid, a second light strip is provided on the front side panel, and a third light strip is provided on the rear side panel. The first light strip, the second light strip, and the third light strip are respectively located within the accommodating space.

3. The battery cell transport box according to claim 1, characterized in that, A first observation window and a second observation window are respectively provided on the left side panel. The first observation window and the second observation window are arranged sequentially along the bottom side panel near the box cover. A first sealing glass is provided in the first observation window and a second sealing glass is provided in the second observation window.

4. The battery cell transport box according to claim 3, characterized in that, The first sealing glass includes two layers of first explosion-proof glass and a first PVB layer disposed between the two layers of first explosion-proof glass and connected to the two layers of first explosion-proof glass respectively. The second sealing glass includes two layers of second explosion-proof glass and a second PVB layer disposed between the two layers of second explosion-proof glass and connected to the two layers of second explosion-proof glass respectively.

5. The battery cell transport box according to claim 1, characterized in that, The opening pressure range of the first explosion-proof diaphragm is 0.5MPa±0.2 MPa, and the opening pressure range of the second explosion-proof diaphragm is 0.5MPa±0.2 MPa.

6. A method for manufacturing a battery cell transport box, characterized in that, The manufacturing method is used to manufacture the cell transport box as described in any one of claims 1 to 5, and further includes... The box body and lid were made of martensitic precipitation hardening stainless steel. Liners are installed on the box body and the box lid respectively, and the inside of the lining is filled with high-density polyethylene and diced sponge as cushioning material; A first explosion vent is machined on the enclosure, a first explosion-proof diaphragm is installed in the first explosion vent, and a first smoke detector is installed on the enclosure, with the first smoke detector and the first explosion vent being staggered. A second explosion vent is machined on the box cover, a second explosion-proof diaphragm is installed in the second explosion vent, a second smoke detector is installed on the box cover, and a pressure balance valve is installed on the box cover. The second smoke detector is staggered from the second explosion vent. After the box body and the box cover are rotatably connected, the box body and the box cover enclose a space for placing the battery cells, and the first smoke detector and the second smoke detector are located in the space.

7. The method for manufacturing a battery cell transport box according to claim 6, characterized in that, The manufacturing method further includes separating the accommodating space into an upper placement space and a lower placement space by a partition; sequentially placing the battery cells into the lower placement space and the upper placement space; wherein the housing is provided with a first observation window and a second observation window respectively, a first sealing glass is installed in the first observation window, the first sealing glass includes two layers of first explosion-proof glass and a first PVB layer disposed between the two layers of first explosion-proof glass and respectively connected to the two layers of first explosion-proof glass, and a second sealing glass is installed in the second observation window, the second sealing glass includes two layers of second explosion-proof glass and a second PVB layer disposed between the two layers of second explosion-proof glass and respectively connected to the two layers of second explosion-proof glass.

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