High-voltage stacked battery packaging machine box

Abstract

The utility model belongs to the technical field of batteries, and discloses a high-voltage stacked battery pack case which comprises a base assembly, a plurality of battery pack assemblies and an electric box assembly, the battery pack assemblies are sequentially connected in the vertical direction, the lowest battery pack assembly is connected to the upper portion of the base assembly, and the electric box assembly is connected to the lower portion of the base assembly. The uppermost battery pack assembly is connected below the electric box assembly, when the case is stacked, the base is firstly placed flat, a waterproof groove design is adopted above the base, when a second layer of battery packs are stacked, waterproof rubber strips below the battery packs are attached to the waterproof grooves of the base below the battery packs, the purpose of completely preventing water from IP65 is achieved, and the like, the electric box assembly is installed at the uppermost part. The utility model has the beneficial effects that the structural member for supporting the battery cell is better in strength, the adhesive tape is arranged at the hidden sunken part at the lower part of the case, is protected by the bent edge during assembly and is not easy to scrape off, the strength is better, the planeness is better, and the water resistance is better ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a high-voltage stacked battery pack chassis. Background Art

[0002] With the development of economy and the progress of society, people have put forward higher and higher requirements for energy. Finding new energy has become an urgent issue faced by mankind. The existing sources of electric energy mainly include three types, namely thermal power, hydropower and nuclear power. Thermal power requires burning fossil fuels such as coal and oil, hydropower needs to flood a large amount of land, and nuclear power has the risk of nuclear leakage. In comparison, solar power generation has the advantages of environmental protection and safety. Solar photovoltaic power generation refers to a power generation method that directly converts light energy into electrical energy without passing through a thermal process. It includes photovoltaic power generation, photochemical power generation, photoinduced power generation and photobiological power generation. Solar power generation generally stores electrical energy in a battery through devices such as an inverter. When users need it, they obtain electrical energy from the battery. Most enterprises use stacked battery packs to store electrical energy. The steel plates supporting the battery cells in the battery pack chassis are all designed with flat non-bent parts, or waterproof rubber strips are pasted above the chassis. There are many problems with this. The steel plates supporting the battery cells are designed with flat non-bent parts. Such a design will cause the sheet metal itself to deform. When welding, the chassis shell and the support plate are prone to deformation, and it is easy to deform during assembly and fitting; the waterproof rubber strip is pasted above the chassis. When assembling the internal components of the chassis, it is easy to be scraped off. The chassis does not adopt a waterproof groove design, and the sheet metal part with the waterproof rubber strip pasted has weak strength, resulting in poor waterproof effect and unstable waterproof performance.

[0003] Therefore, it is necessary to provide a high-voltage stacked battery pack chassis with good chassis strength, not easily damaged, and good waterproof performance to avoid dangerous accidents. Summary of the Utility Model

[0004] The utility model discloses a high-voltage stacked battery pack chassis, which relates to the stacked battery pack industry and can effectively solve the technical problems involved in the background art.

[0005] To achieve the above object, the technical solution of the utility model is as follows:

[0006] A high-voltage stacked battery pack chassis includes a base assembly, a battery pack assembly and an electrical box assembly. The number of the battery pack assemblies is multiple and they are sequentially connected in the vertical direction. The lowermost battery pack assembly is connected above the base assembly, and the uppermost battery pack assembly is connected below the electrical box assembly;

[0007] The base assembly includes a base bottom plate, base side plates, and a base top plate. The base side plates are installed above the base bottom plate, and the base top plate is installed above the base side plates. The base bottom plate, the base side plates, and the base top plate enclose a base inner cavity. A first vertical baffle is provided on the base top plate and is arranged vertically. The top end of the first vertical baffle extends outward to form a first horizontal baffle. An upper connector assembly is fixed on the base top plate;

[0008] The battery pack assembly includes a battery pack bottom plate, battery pack side plates, and a battery pack top plate. The battery pack side plates are installed above the battery pack bottom plate, and the battery pack top plate is installed above the battery pack side plates. The battery pack bottom plate, the battery pack side plates, and the battery pack top plate enclose a battery pack inner cavity. A second vertical baffle is provided on the battery pack top plate and is arranged vertically. The top end of the second vertical baffle extends outward to form a second horizontal baffle. An upper connector assembly is fixed on the battery pack top plate. The battery pack bottom plate is formed by bending a steel plate and includes a first bending part arranged vertically, a second bending part extending rightward at the top of the first bending part, a third bending part extending downward on the right side of the second bending part, a fourth bending part extending rightward at the bottom of the third bending part, a fifth bending part extending upward on the right side of the fourth bending part, a sixth bending part extending rightward at the top of the fifth bending part, and a seventh bending part extending downward on the right side of the sixth bending part. A lower connector assembly is provided on the battery pack bottom plate. A battery is provided in the battery pack inner cavity. The battery is connected to the upper connector assembly installed on the battery pack top plate and the lower connector assembly installed on the battery pack bottom plate. The first horizontal baffle corresponds to the second bending part of the lowermost battery pack bottom plate, and a waterproof rubber strip is provided between them. The second horizontal baffle corresponds to the second bending part of the adjacent battery pack bottom plate, and a waterproof rubber strip is provided between them. The upper connector assembly on the base top plate is inserted into the lower connector assembly on the lowermost battery pack bottom plate. The upper connector assembly on the battery pack top plate is inserted into the lower connector assembly on the adjacent battery pack bottom plate;

[0009] The electrical box assembly includes an electrical box bottom plate, electrical box side plates, and an electrical box top plate. The electrical box side plates are installed above the electrical box bottom plate, and the electrical box top plate is installed above the electrical box side plates. The electrical box bottom plate, the electrical box side plates, and the electrical box top plate enclose an electrical box inner cavity. The electrical box bottom plate has the same structure as the battery pack bottom plate. A lower connector assembly is provided on the electrical box bottom plate. A waterproof rubber strip is provided between the second bending part of the electrical box bottom plate and the uppermost second horizontal baffle. The upper connector assembly on the uppermost battery pack top plate is inserted into the lower connector assembly on the electrical box bottom plate.

[0010] As a preferred improvement of the present utility model: The number of the battery pack assemblies is 2 - 8.

[0011] As a preferred improvement of the present utility model: A controller part is provided in the inner cavity of the electric box. The controller part is connected to an external solar power generation device and is connected to the lower connector assembly on the bottom plate of the electric box.

[0012] As a preferred improvement of the present utility model: Between the base assembly and the battery pack assemblies, between adjacent battery pack assemblies, and between the battery pack assemblies and the electric box assembly are all fixed by bolts.

[0013] As a preferred improvement of the present utility model: A switch mechanism is provided in the inner cavity of the base. The switch mechanism is connected to the upper connector assembly on the top plate of the base.

[0014] As a preferred improvement of the present utility model: The side plate of the battery pack extends downward to form a first extension plate. The bottom of the first extension plate extends inward to form a second extension plate. The inner side of the second extension plate extends upward to form a third extension plate. The second extension plate of the lowermost battery pack assembly abuts against the top plate of the base, and the second extension plates of adjacent battery pack assemblies abut against the top plate of the battery pack.

[0015] As a preferred improvement of the present utility model: The side plate of the electric box has the same structure as the side plate of the battery pack. The second extension plate of the side plate of the electric box abuts against the top plate of the uppermost battery pack.

[0016] As a preferred improvement of the present utility model: The side plate of the battery pack includes a front plate, a left plate, a rear plate, and a right plate. The left plate, the rear plate, and the right plate are connected by welding. The front plate is fixed to the left plate and the right plate by screws, and a waterproof rubber layer is provided at the contact of the front plate with the left plate and the right plate.

[0017] The beneficial effects of the present utility model are as follows:

[0018] The steel plate supporting the battery cells is formed by 6 - knife bending. The battery cells are assembled on the steel plate and are insulated by an epoxy board in between. The structural member supporting the battery cells has better strength. The waterproof rubber strip is pasted at the second - knife bending of the steel plate supporting the battery cells. The rubber strip is in a concealed concave part at the lower part of the chassis and is protected by the bent edge during assembly, so it is not easily scraped off, has better strength, better flatness, and more guaranteed waterproof performance. The waterproof of the chassis below the waterproof rubber strip adopts a water - trough design, and the water - trough design can more effectively prevent water. The waterproof rubber strip is pasted at the bottom of the chassis, and the rubber strip is in a concealed part at the lower part of the chassis, making the appearance more beautiful. Description of the Drawings

[0019] To more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings, where:

[0020] Figure 1 is a schematic diagram of a high-voltage stacked battery pack chassis of the present utility model;

[0021] Figure 2 is an internal schematic diagram of the present utility model;

[0022] Figure 3 is an exploded schematic diagram of the battery pack chassis of the present utility model;

[0023] Figure 4 is a schematic diagram of the structure of the base assembly of the present utility model;

[0024] Figure 5 is a schematic diagram of the structure of the battery pack assembly of the present utility model;

[0025] Figure 6 is a schematic diagram of the structure of the electrical box assembly of the present utility model;

[0026] Figure 7 is Figure 2 an enlarged schematic diagram at position A in

[0027] In the figure: 100 - base assembly, 110 - base bottom plate, 120 - base side plate, 130 - base top plate, 131 - first vertical baffle, 132 - first horizontal baffle, 140 - base inner cavity, 200 - battery pack assembly, 210 - battery pack bottom plate, 211 - first bending part, 212 - second bending part, 213 - third bending part, 214 - fourth bending part, 215 - fifth bending part, 216 - sixth bending part, 217 - seventh bending part, 220 - battery pack side plate, 221 - first extension plate, 222 - second extension plate, 223 - third extension plate, 230 - battery pack top plate, 231 - second vertical baffle, 232 - second horizontal baffle, 240 - battery pack inner cavity, 300 - electrical box assembly, 310 - electrical box bottom plate, 320 - electrical box side plate, 330 - electrical box top plate, 340 - electrical box inner cavity, 400 - upper connector assembly, 500 - lower connector assembly, 600 - waterproof rubber strip. Detailed implementation manners

[0028] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0029] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative position relationship, movement conditions, etc. between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0030] In addition, in the present invention, descriptions such as "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0031] In the present invention, unless otherwise clearly defined and limited, terms such as "connection" and "fixation" should be understood in a broad sense. For example, "fixation" may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0033] Please refer to Figures 1 - 3As shown in the figure, the utility model provides a high-voltage stacked battery pack chassis, which includes a base assembly 100, a battery pack assembly 200, and an electrical box assembly 300. The number of the battery pack assemblies 200 is multiple and they are sequentially connected in the vertical direction. The lowermost battery pack assembly 200 is connected above the base assembly 100, and the uppermost battery pack assembly 200 is connected below the electrical box assembly 300. First, place the base, which plays a role in supporting the battery pack and the high-voltage electrical box structurally and in series connection of current through the plug-in connector electrically. Stack 2 to 8 battery packs in sequence, and connect the current in series through the plug-in connector (each battery pack has a bottom plate to support and fix the battery cells). Place the high-voltage electrical box at the top (including a bottom plate to support and fix the electrical appliances). Multiple battery packs are connected in series to store electrical energy, and an external solar power generation device is connected to the high-voltage stacked battery pack chassis.

[0034] Please refer to Figure 4 As shown in the figure, the base assembly 100 includes a base bottom plate 110, base side plates 120, and a base top plate 130. The base side plates 120 are installed above the base bottom plate 110, and the base top plate 130 is installed above the base side plates 120. The base bottom plate 110, the base side plates 120, and the base top plate 130 enclose a base inner cavity 140. A first vertical baffle 131 is provided on the base top plate 130 in the vertical direction, and the top end of the first vertical baffle 131 extends outward to form a first horizontal baffle 132. An upper connector assembly 400 is fixed on the base top plate 130. The base inner cavity 140 is used to place electrical components or other tools, and the connector assembly 400 is used for circuit connection. The first vertical baffle 131 and the first horizontal baffle 132 are used to form a water trough, so that when used outdoors, rainwater can be prevented from contacting the connector assembly 400 or the components in the base inner cavity 140, avoiding accidents such as short circuits. When the base assembly 100 adopts a cuboid structure, the first vertical baffle 131 and the first horizontal baffle 132 are provided on the left and right sides, and the front side plate is detachably installed to facilitate the maintenance of internal components. The rear side plate abuts against the upper battery pack assembly 200, and rubber is provided at the connection to avoid gaps. The first vertical baffle 131 and the first horizontal baffle 132 can also be provided according to needs. Preferably, vertical baffles and horizontal baffles are provided on the left, right, and rear sides, and extension plate structures are correspondingly provided for the battery pack assembly and the electrical box assembly to form a waterproof trough structure on the left, rear, and right sides.

[0035] Please refer to Figure 5As shown, the battery pack assembly 200 includes a battery pack bottom plate 210, a battery pack side plate 220, and a battery pack top plate 230. The battery pack side plate 220 is installed above the battery pack bottom plate 210, and the battery pack top plate 230 is installed above the battery pack side plate 220. The battery pack bottom plate 210, the battery pack side plate 220, and the battery pack top plate 230 enclose a battery pack inner cavity 240. A second vertical baffle 231 is provided on the battery pack top plate 230 and is arranged in the vertical direction. The top end of the second vertical baffle 231 extends outward to form a second horizontal baffle 232. An upper connector assembly 400 is fixed on the battery pack top plate 230. The battery pack bottom plate 210 is formed by bending a steel plate and includes a first bent portion 211 arranged in the vertical direction, a second bent portion 212 extending to the right at the top of the first bent portion 211, a third bent portion 213 extending downward on the right side of the second bent portion 212, a fourth bent portion 214 extending to the right at the bottom of the third bent portion 213, a fifth bent portion 215 extending upward on the right side of the fourth bent portion 214, a sixth bent portion 216 extending to the right at the top of the fifth bent portion 215, and a seventh bent portion 217 extending downward on the right side of the sixth bent portion 216. A lower connector assembly 500 is provided on the battery pack bottom plate 210. A battery is provided in the battery pack inner cavity 240, and the battery is connected to the upper connector assembly 400 installed on the battery pack top plate 230 and the lower connector assembly 500 installed on the battery pack bottom plate 210. The first horizontal baffle 132 corresponds to the second bent portion 212 of the lowermost battery pack bottom plate 210, and a waterproof rubber strip 600 is provided between the two. The second horizontal baffle 232 corresponds to the second bent portion 212 of the adjacent battery pack bottom plate 210, and a waterproof rubber strip 600 is provided between the two. The upper connector assembly 400 on the base top plate 130 is inserted into the lower connector assembly 500 on the lowermost battery pack bottom plate 210. The upper connector assembly 400 on the battery pack top plate 230 is inserted into the lower connector assembly 500 on the adjacent battery pack bottom plate 210. The upper connector assembly 400 and the lower connector assembly 500 are connected in series, so that each battery pack, the electrical box assembly, and the base assembly are electrically connected. The second horizontal baffle 232 and the waterproof rubber strip 600 form a sealing effect, making the appearance more beautiful and having a good waterproof effect. The battery pack side plate 220 extends downward to form a first extension plate 221. The bottom of the first extension plate 221 extends inward to form a second extension plate 222. The inner side of the second extension plate 222 extends upward to form a third extension plate 223. The second extension plate 222 of the lowermost battery pack assembly 200 abuts against the base top plate 130. The second extension plate 222 of the adjacent battery pack assemblies 200 abuts against the battery pack top plate 230.A water tank is formed between the extension plate and the baffle, which can more effectively prevent water. The bottom adopts a bending structure, and the structural member supporting the battery cell has better strength.

[0036] Please refer to Figure 6 As shown, the electrical box assembly 300 includes an electrical box bottom plate 310, electrical box side plates 320, and an electrical box top plate 330. The electrical box side plates 320 are installed above the electrical box bottom plate 310, and the electrical box top plate 330 is installed above the electrical box side plates 320. The electrical box bottom plate 310, the electrical box side plates 320, and the electrical box top plate 330 enclose to form an electrical box inner cavity 340. The electrical box bottom plate 310 has the same structure as the battery pack bottom plate 210. A lower connector assembly 500 is provided on the electrical box bottom plate 310. A waterproof rubber strip 600 is provided between the second bending part of the electrical box bottom plate 310 and the uppermost second cross baffle 232. The upper connector assembly 400 on the uppermost battery pack top plate 230 is inserted into the lower connector assembly 500 on the electrical box bottom plate 310. The electrical box side plates 320 have the same structure as the battery pack side plates 220. The second extension plate of the electrical box side plates 320 abuts against the uppermost battery pack top plate 230. A water tank is formed between the extension plate and the baffle, which can more effectively prevent water. The bottom adopts a bending structure, and the structural member supporting the battery cell has better strength.

[0037] As an implementation manner, the number of the battery pack assemblies 200 is 2 - 8. A controller part is provided in the electrical box inner cavity 340. The controller part is connected to an external solar power generation device and is connected to the lower connector assembly 500 on the electrical box bottom plate 310. Between the base assembly 100 and the battery pack assemblies 200, between adjacent battery pack assemblies 200, and between the battery pack assemblies 200 and the electrical box assembly 300, they are all fixed by bolts. A switch mechanism is provided in the base inner cavity 140. The switch mechanism is connected to the upper connector assembly 400 on the base top plate 130. The battery pack side plates 220 include a front plate, a left plate, a rear plate, and a right plate. The left plate, the rear plate, and the right plate are connected by welding. The front plate is fixed to the left plate and the right plate by screws, and a waterproof rubber layer is provided at the contact positions of the front plate with the left plate and the right plate. When the chassis are stacked, first lay the base flat, and a waterproof groove design is adopted above the base; when stacking the second - layer battery pack, the waterproof rubber strip under the battery pack fits with the waterproof groove of the lower base, achieving the purpose of complete waterproofing of IP65; and so on. Up to 8 battery packs can be stacked, and the electrical box assembly is installed at the uppermost layer. It has a beautiful appearance, convenient assembly, good waterproof reliability, high chassis strength, and small chassis deformation after the whole machine is stacked.

[0038] Although the embodiments of the present utility model have been disclosed as above, it is not limited to the applications listed in the specification and the embodiments. It can be fully applied to various fields suitable for the present utility model. For those familiar with the field, additional modifications can be easily achieved. Therefore, without departing from the general concept defined by the claims and the equivalent scope, the present utility model is not limited to specific details and the illustrated examples shown and described herein.

Claims

1. A high-voltage stacked battery pack chassis, characterized in that: It includes a base assembly (100), a battery pack assembly (200), and an electrical box assembly (300). The number of the battery pack assemblies (200) is multiple, and they are sequentially connected in the vertical direction. The lowermost battery pack assembly (200) is connected above the base assembly (100), and the uppermost battery pack assembly (200) is connected below the electrical box assembly (300); The base assembly (100) includes a base bottom plate (110), a base side plate (120), and a base top plate (130). The base side plate (120) is installed above the base bottom plate (110), and the base top plate (130) is installed above the base side plate (120). The base bottom plate (110), the base side plate (120), and the base top plate (130) enclose to form a base inner cavity (140). A first vertical baffle (131) is provided on the base top plate (130) in the vertical direction. The top end of the first vertical baffle (131) extends outward to form a first horizontal baffle (132). An upper connector assembly (400) is fixed on the base top plate (130); The battery pack assembly (200) includes a battery pack bottom plate (210), a battery pack side plate (220), and a battery pack top plate (230). The battery pack side plate (220) is installed above the battery pack bottom plate (210), and the battery pack top plate (230) is installed above the battery pack side plate (220). The battery pack bottom plate (210), the battery pack side plate (220), and the battery pack top plate (230) enclose a battery pack inner cavity (240). A second vertical baffle (231) is provided on the battery pack top plate (230) along the vertical direction, and the top end of the second vertical baffle (231) extends outward to form a second horizontal baffle (232). An upper connector assembly (400) is fixed on the battery pack top plate (230). The battery pack bottom plate (210) is formed by bending a steel plate, and includes a first bending portion (211) provided along the vertical direction, a second bending portion (212) extending rightward at the top of the first bending portion (211), a third bending portion (213) extending downward on the right side of the second bending portion (212), a fourth bending portion (214) extending rightward at the bottom of the third bending portion (213), a fifth bending portion (215) extending upward on the right side of the fourth bending portion (214), a sixth bending portion (216) extending rightward at the top of the fifth bending portion (215), and a seventh bending portion (217) extending downward on the right side of the sixth bending portion (216). A lower connector assembly (500) is provided on the battery pack bottom plate (210). A battery is provided in the battery pack inner cavity (240), and the battery is connected to the upper connector assembly (400) installed on the battery pack top plate (230) and the lower connector assembly (500) installed on the battery pack bottom plate (210). The first horizontal baffle (132) corresponds to the second bending portion (212) of the lowermost battery pack bottom plate (210), and a waterproof rubber strip (600) is provided between them. The second horizontal baffle (232) corresponds to the second bending portion (212) of the adjacent battery pack bottom plate (210), and a waterproof rubber strip (600) is provided between them. The upper connector assembly (400) on the base top plate (130) is inserted into the lower connector assembly (500) on the lowermost battery pack bottom plate (210), and the upper connector assembly (400) on the battery pack top plate (230) is inserted into the lower connector assembly (500) on the adjacent battery pack bottom plate (210); The electric box assembly (300) includes an electric box bottom plate (310), electric box side plates (320), and an electric box top plate (330). The electric box side plates (320) are installed above the electric box bottom plate (310), and the electric box top plate (330) is installed above the electric box side plates (320). The electric box bottom plate (310), the electric box side plates (320), and the electric box top plate (330) enclose an electric box inner cavity (340). The electric box bottom plate (310) has the same structure as the battery pack bottom plate (210). The lower connector assembly (500) is provided on the electric box bottom plate (310). A waterproof rubber strip (600) is provided between the uppermost second cross baffle (232) and the second bent portion of the electric box bottom plate (310). The upper connector assembly (400) on the uppermost battery pack top plate (230) is inserted into the lower connector assembly (500) on the electric box bottom plate (310).

2. A high-voltage stacked battery pack chassis according to claim 1, characterized in that: The number of the battery pack assemblies (200) is 2 - 8.

3. A high-voltage stacked battery pack chassis according to claim 1, characterized in that: A controller part is provided in the electric box inner cavity (340). The controller part is connected to an external solar power generation device and is also connected to the lower connector assembly (500) on the electric box bottom plate (310).

4. A high-voltage stacked battery pack chassis according to claim 1, characterized in that: The base assembly (100) and the battery pack assemblies (200), adjacent battery pack assemblies (200), and the battery pack assemblies (200) and the electric box assembly (300) are all fixed by bolts.

5. A high-voltage stacked battery pack chassis according to claim 1, characterized in that: A switch mechanism is provided in the base inner cavity (140). The switch mechanism is connected to the upper connector assembly (400) on the base top plate (130).

6. The high-voltage stacked battery pack chassis according to claim 1, wherein: The battery pack side plate (220) extends downward to form a first extension plate (221). The bottom of the first extension plate (221) extends inward to form a second extension plate (222). The inner side of the second extension plate (222) extends upward to form a third extension plate (223). The second extension plate (222) of the lowermost battery pack assembly (200) abuts against the base top plate (130), and the second extension plates (222) of adjacent battery pack assemblies (200) abut against the battery pack top plate (230).

7. A high-voltage stacked battery pack chassis according to claim 6, characterized in that: The electric box side plate (320) has the same structure as the battery pack side plate (220). The second extension plate of the electric box side plate (320) abuts against the uppermost battery pack top plate (230).

8. A high-voltage stacked battery pack chassis according to claim 1, characterized in that: The battery pack side plate (220) includes a front plate, a left plate, a rear plate, and a right plate. The left plate, the rear plate, and the right plate are connected by welding. The front plate is fixed to the left plate and the right plate with screws, and a waterproof rubber layer is provided at the contact positions between the front plate and the left plate and the right plate.

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