Battery pack and electric equipment

Abstract

The utility model discloses a battery pack and electric equipment, the battery pack comprises: a battery cell, at least one end of the battery cell in the first horizontal direction is provided with a battery cell explosion-proof valve; the battery cell is arranged on the tray, the tray comprises boundary beams, the boundary beams are located at the two ends of the battery cell in the second horizontal direction, and first channels communicated with the battery pack anti-explosion valve are formed in the boundary beams; the confluence piece is arranged on the tray, the confluence piece and the battery cell explosion-proof valve are located at the same end of the battery cell in the first horizontal direction, the confluence piece is communicated with the battery cell explosion-proof valve, a second channel is formed in the confluence piece, the second channel is communicated with the first channel, and the first horizontal direction is perpendicular to the second horizontal direction. According to the battery pack provided by the utility model, the convergence piece and the edge beam are arranged, the convergence piece is communicated with the battery cell explosion-proof valve, and the edge beam is communicated with the battery pack explosion-proof valve, so that thermoelectric separation in the battery pack can be realized, and the safety performance of the battery pack is greatly improved.

Description

Battery packs and electrical equipment Technical Field

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

[0002] In related technologies, a battery cell includes a battery cell housing, on which a battery cell explosion-proof valve is provided for releasing the internal air pressure of the battery cell. The side plate of the battery pack is provided with an exhaust channel, and the inlet of the exhaust channel corresponds to the battery cell explosion-proof valve. The outlet of the exhaust channel is connected to a collection space, which is located inside the battery pack cavity. The collection space is provided with a battery pack explosion-proof valve, which can be used to relieve the pressure inside the battery pack.

[0003] However, existing battery packs also have significant drawbacks: the battery packs lack thermal separation solutions. During thermal runaway, as the cell explosion-proof valves open, the electrolyte will rapidly spread to other areas within the battery pack. The uncontrollable high-temperature electrolyte will accelerate heat diffusion and cause a series of uncontrollable hazards. Summary of the Invention

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a battery pack that can achieve thermoelectric separation, which can greatly improve safety performance.

[0005] This utility model further proposes an electrical device.

[0006] According to the present invention, a battery pack includes: a battery cell, wherein at least one end of the battery cell in a first horizontal direction is provided with a battery cell explosion-proof valve; a tray, wherein the battery cell is disposed on the tray, the tray including: a side beam, wherein the side beam is located at both ends of the battery cell in a second horizontal direction, and a first channel communicating with the battery pack explosion-proof valve is formed in the side beam; and a busbar, wherein the busbar is disposed on the tray, and the busbar and the battery cell explosion-proof valve are located at the same end of the battery cell in the first horizontal direction, and the busbar is communicating with the battery cell explosion-proof valve, wherein a second channel is formed in the busbar, and the second channel is communicating with the first channel, wherein the first horizontal direction and the second horizontal direction are perpendicular to each other.

[0007] According to the present invention, the battery pack is equipped with a busbar and a side beam. The busbar is connected to the cell explosion-proof valve, and the side beam is connected to the battery pack explosion-proof valve. This enables thermal and electrical separation within the battery pack, thereby greatly improving the safety performance of the battery pack.

[0008] In some examples of this utility model, the first channel includes an upper cavity and a lower cavity, the upper cavity and the lower cavity are connected, the second channel is connected to the upper cavity, and the battery pack explosion-proof valve is disposed in the lower cavity.

[0009] In some examples of this utility model, the side beam is provided with an installation port, the installation port is connected to the upper cavity, and the two ends of the manifold are respectively connected to the installation port.

[0010] In some examples of this utility model, the tray further includes: a partition disposed within the first channel to divide the first channel into the upper cavity and the lower cavity; or the side beam is formed with a flange that bends into the first channel, the flange dividing the first channel into the upper cavity and the lower cavity.

[0011] In some examples of this utility model, the partition or the flange is provided with a first through hole, which connects the upper cavity and the lower cavity.

[0012] In some examples of this utility model, the battery pack explosion-proof valve includes: a valve body and a sleeve, the valve body being connected to the side of the sleeve away from the battery cell, and the sleeve having at least one opening in the circumferential direction, the opening communicating with the lower cavity.

[0013] In some examples of this utility model, the shape of the projection of the busbar along the second horizontal direction is C-shaped, circular, rectangular, U-shaped, or L-shaped.

[0014] In some examples of this utility model, there are multiple battery cells, and the busbar is open on one side facing the battery cell, with the open side covering the battery cell explosion-proof valves of the multiple battery cells; or the busbar is provided with multiple second through holes on one side facing the battery cell, and the multiple second through holes are provided in a one-to-one correspondence with the battery cell explosion-proof valves of the multiple battery cells.

[0015] In some examples of this utility model, the battery pack further includes: a cover plate, the upper end of the busbar being open, the cover plate covering the tray, and the cover plate sealingly covering the upper end of the busbar; and / or the lower end of the busbar being open, the bottom plate of the tray sealingly covering the lower end of the busbar.

[0016] In some examples of this utility model, the busbar includes an upper plate, a lower plate, and a side plate. The upper plate is connected to the upper end of the side plate and extends toward one side of the battery cell. The lower plate is connected to the lower end of the side plate and extends toward one side of the battery cell.

[0017] In some examples of this utility model, the busbar further includes: a first latching protrusion and a second latching protrusion, wherein the first latching protrusion is connected to the end of the upper plate away from the side plate and extends downward, and the second latching protrusion is connected to the end of the lower plate away from the side plate and extends upward.

[0018] In some examples of this utility model, a downwardly recessed groove is provided at the connection between the lower plate and the side plate.

[0019] In some examples of this utility model, the busbar further includes: a first extension plate and a second extension plate, wherein the first extension plate is connected to the lower end of the upper plate away from the side plate and extends toward one side of the battery cell, and the second extension plate is connected to the upper end of the lower plate away from the side plate and extends toward one side of the battery cell.

[0020] In some examples of this utility model, the battery cell is a blade battery cell, which extends along a first horizontal direction.

[0021] In some examples of this utility model, the length direction of the blade cell is consistent with the length direction of the battery pack.

[0022] In some examples of this utility model, the positive and negative terminals of the battery cell are located at opposite ends in a horizontal first direction. In two adjacent battery cells, the positive terminal of one battery cell and the negative terminal of the other battery cell are connected in series at the same end in the horizontal first direction.

[0023] In some examples of this utility model, the cell explosion-proof valve is located above both ends of the cell in a horizontal first direction.

[0024] In some examples of this utility model, the battery pack further includes: a cell group, the cell group comprising: a plurality of cells arranged along a second horizontal direction.

[0025] In some examples of this utility model, the battery pack further includes an explosion-proof beam disposed between two adjacent battery cell groups.

[0026] The electrical equipment according to this utility model includes: the battery pack described above.

[0027] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0028] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0029] Figure 1 is a schematic diagram of the structure of a battery pack according to an embodiment of the present utility model;

[0030] Figure 2 is a schematic diagram of the pallet structure;

[0031] Figure 3 is a schematic diagram of the structure of the first channel;

[0032] Figure 4 is a cross-sectional view of the pallet;

[0033] Figure 5 is a schematic diagram of the first part of the pallet structure;

[0034] Figure 6 is a schematic diagram of the second part of the pallet structure;

[0035] Figure 7 is a schematic diagram of the explosion-proof valve for the battery pack;

[0036] Figure 8 is a schematic diagram of the busbar structure;

[0037] Figure 9 is a partial structural schematic diagram of the battery pack according to an embodiment of the present invention.

[0038] Figure label:

[0039] 1. Battery pack;

[0040] 10. Battery cell; 100. Battery cell explosion-proof valve; 20. Tray; 200. Side beam; 201. Battery pack explosion-proof valve; 202. First channel; 203. Upper cavity; 204. Lower cavity; 205. Mounting port; 206. Flanged edge; 208. Valve body; 209. Sleeve; 210. Opening; 30. Busbar; 300. Second channel; 301. Upper plate; 302. Lower plate; 303. Side plate; 304. First locking protrusion; 305. Second locking protrusion; 306. Groove; 40. Battery cell assembly; 50. Explosion-proof beam. Detailed Implementation

[0041] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present invention are described in detail below.

[0042] The battery pack 1 according to an embodiment of the present invention is described below with reference to Figures 1-9.

[0043] As shown in Figure 1, the battery pack 1 according to an embodiment of the present invention includes: a battery cell 10, a tray 20, and a busbar 30. The battery cell 10 is the core component inside the battery pack 1 and can store electrical energy. The tray 20 can be used to install the battery cell 10 and the busbar 30. The busbar 30 can function as a current collector and is mainly used to release the high-temperature electrolyte released by the battery cell 10.

[0044] As shown in Figures 1, 2 and 9, at least one end of the battery cell 10 in the first horizontal direction is provided with a battery cell explosion-proof valve 100. The battery cell 10 is placed on a tray 20, which includes a side beam 200 located at both ends of the battery cell 10 in the second horizontal direction. In the first horizontal direction, a cell explosion-proof valve 100 is provided at one end of the cell 10. Based on the arrangement of the cell 10, cell explosion-proof valves 100 are provided on both sides of the cell group 40. The cell explosion-proof valves 100 can be used to ensure the safety of the cell 10. The cell 10 is placed on the tray 20, which can support the cell 10. At this time, the upper space of the tray 20 can be used reasonably to reduce the space occupation, thereby solving the space arrangement problem of the battery pack 1. The side beam 200 can enhance the overall structural strength and rigidity of the battery pack 1 and protect the internal cell 10 and electrical components from external physical damage. The side beam 200 is located at both ends of the cell 10 in the second horizontal direction. At this time, it helps to improve the overall rigidity and stability of the battery pack 1, and also helps to fix and support the internal cell 10 and other components to prevent damage caused by external impact or vibration.

[0045] A first channel 202 communicating with the battery pack explosion-proof valve 201 is formed inside the side beam 200. The busbar 30 is disposed on the tray 20, and the busbar 30 and the cell explosion-proof valve 100 are located at the same end of the cell 10 in the first horizontal direction. The busbar 30 is also communicating with the cell explosion-proof valve 100. A second channel 300 is formed inside the busbar 30, and the second channel 300 is communicating with the first channel 202. The first horizontal direction and the second horizontal direction are perpendicular to each other. It should be noted that the first channel 202 can be used for electrolyte flow. The first channel 202 is formed within the side beam 200, which reduces the number of parts, optimizes the structure, and thus reduces the overall weight of the battery pack 1, while also lowering costs. The battery pack explosion-proof valve 201 is a pressure relief valve and serves as the main explosion-proof valve for the battery pack 1, ensuring its safety. The busbar 30 is mounted on the tray 20, which supports it. This allows for efficient use of the upper space of the tray 20, reducing space occupancy and solving the space arrangement problem of the battery pack 1. The busbar 30 and the cell explosion-proof valve... 100 is located at the same end of the first horizontal direction of the battery cell 10, meaning that the busbar 30 is connected to the battery cell explosion-proof valve 100. At this time, the busbar 30 can be used to release the high-temperature electrolyte released by the battery cell 10. A second channel 300 is formed within the busbar 30. The first channel 202 and the second channel 300 can be used to flow electrolyte. The second channel 300 is connected to the first channel 202, thus ensuring that the electrolyte spray path follows a preset path. The high-temperature electrolyte released by the battery cell 10 flows through the busbar 30, passes through the side beam 200, and is finally discharged through the battery pack explosion-proof valve 201. This achieves thermal and electrical separation within the battery pack 1, thereby greatly improving the safety performance of the battery pack 1. The first horizontal direction and the second horizontal direction are perpendicular to each other.

[0046] Therefore, by setting up a busbar 30 and a side beam 200, and with the busbar 30 connected to the cell explosion-proof valve 100 and the side beam 200 connected to the battery pack explosion-proof valve 201, thermal and electrical separation can be achieved within the battery pack 1, thereby greatly improving the safety performance of the battery pack 1.

[0047] Specifically, as shown in Figures 3 and 4, the first channel 202 includes an upper cavity 203 and a lower cavity 204, the upper cavity 203 and the lower cavity 204 are connected, the second channel 300 is connected to the upper cavity 203, and the battery pack explosion-proof valve 201 is disposed in the lower cavity 204. The upper cavity 203 and lower cavity 204 are components of the first channel 202, both of which allow electrolyte to flow. Dividing the first channel 202 into the upper cavity 203 and lower cavity 204 helps to better control the internal temperature of the battery pack 1, prevent local overheating, and thus improve the safety and service life of the battery pack 1. Secondly, it allows for more efficient use of the internal space of the battery pack 1. In addition, it enhances the mechanical properties of the side beam 200, providing better protection against external impacts and vibrations. The upper cavity 203 is connected to the lower cavity 204, and the second channel 300 is connected to the upper cavity 203. The battery pack explosion-proof valve 201 is located in the lower cavity 204. In this way, the high-temperature electrolyte released by the cell 10 flows through the second channel 300, then through the upper cavity 203, and then through the lower cavity 204, and finally is discharged through the battery pack explosion-proof valve 201. This achieves thermoelectric separation within the battery pack 1, thereby greatly improving the safety performance of the battery pack 1. The side beam 200 structure can be configured in various forms, and the connection with the busbar 30 can have various structural forms.

[0048] As shown in Figures 5 and 6, the side beam 200 is provided with mounting ports 205, which communicate with the upper cavity 203. Both ends of the manifold 30 are connected to the mounting ports 205. The mounting ports 205 serve both as mounting points and for venting and draining fluid. Other components can be installed on the side beam 200 through the mounting ports 205. Since the mounting ports 205 communicate with the upper cavity 203 and both ends of the manifold 30 are connected to the mounting ports 205, the mounting ports 205 can be used to install the manifold 30 and also serve as venting and draining holes for both the manifold 30 and the side beam 200. A total of eight mounting ports 205 can be provided on the side beam 200.

[0049] Specifically, as shown in Figures 3 and 4, the tray 20 further includes: a partition, which is disposed in the first channel 202 to divide the first channel 202 into an upper cavity 203 and a lower cavity 204; or the side beam 200 is formed with a flange 206 that bends into the first channel 202, which divides the first channel 202 into an upper cavity 203 and a lower cavity 204. The partition serves a separating function and also enhances the structural strength of the side beam 200. The partition is positioned within the first channel 202 to divide it into an upper cavity 203 and a lower cavity 204. The side beam 200 has a flange 206 that bends inward into the first channel 202, further dividing it into the upper and lower cavities. This flange 206 effectively separates the first channel 202 into the upper and lower cavities, thus facilitating better control of the internal temperature of the battery pack 1 and preventing localized overheating. This improves the safety and lifespan of the battery pack 1. Furthermore, it allows for more efficient use of the internal space of the battery pack 1. Additionally, it enhances the mechanical properties of the side beam 200, providing better protection against external impacts and vibrations.

[0050] Furthermore, the partition or flange 206 is provided with a first through hole, which connects the upper cavity 203 and the lower cavity 204. This first through hole serves as a connection, allowing the upper cavity 203 and the lower cavity 204 to communicate. This enables the high-temperature electrolyte released from the cell 10 to flow through the upper cavity 203 to the lower cavity 204, ultimately achieving electrolyte discharge. Secondly, the connection between the upper cavity 203 and the lower cavity 204 allows air or other cooling media to circulate between them, which helps regulate the temperature of the battery pack 1, ensuring operation within the optimal operating temperature range, thereby extending the battery pack 1's lifespan and improving its performance. Additionally, gas exchange can occur between the upper cavity 203 and the lower cavity 204, helping to balance the internal pressure and reducing the impact of pressure differences caused by temperature changes or external environmental factors on the battery pack 1.

[0051] Of course, as shown in Figures 4 and 7, the battery pack explosion-proof valve 201 includes: a valve body 208 and a sleeve 209. The valve body 208 is connected to the side of the sleeve 209 away from the battery cell 10. The sleeve 209 has at least one opening 210 in the circumferential direction, and the opening 210 communicates with the lower cavity 204. It should be noted that the valve body 208 and sleeve 209 are components of the battery pack explosion-proof valve 201. The valve body 208 is the main body of the battery pack explosion-proof valve 201, which can open or rupture under specific pressure conditions to release excessive internal pressure. The sleeve 209 is used to install the battery pack explosion-proof valve 201. The valve body 208 is connected to the side of the sleeve 209 away from the battery cell 10. This reduces the direct impact of valve body 208 operation, such as venting, on the battery cell 10. Simultaneously, it allows for the shared use of the battery pack explosion-proof valve 201 for both venting and draining. The sleeve 209 has at least one opening 210 on its circumference, allowing for venting of the side beam 200. The openings 210 are located on the circumference of the sleeve 209, and there is at least one opening. The openings 210 communicate with the lower cavity 204, enabling both draining and venting of the side beam 200. The sleeve 209 is mounted on the tray 20.

[0052] Further, as shown in Figures 1, 8, and 9, the projected shape of the busbar 30 along the second horizontal direction can be C-shaped, circular, rectangular, U-shaped, or L-shaped. Setting the projected shape of the busbar 30 to C-shaped allows it to intercept the electrolyte during thermal diffusion. A circular design provides a more uniform distribution, facilitating effective contact and guidance of the high-temperature electrolyte flow in all directions. A rectangular design provides a larger surface area, promoting wider contact and guidance of the high-temperature electrolyte. A U-shaped design can surround one or more sides of the battery cell 10 to a certain extent, providing a guiding path for the high-temperature electrolyte, making it easier to be guided to a safe area for release or absorption. An L-shaped design is suitable for space saving in a specific direction, effectively avoiding other components in a compact space while ensuring the correct guidance and release of the high-temperature electrolyte. Therefore, the shape of the busbar 30 can be designed according to actual needs.

[0053] In addition, as shown in Figures 1, 8 and 9, there are multiple battery cells 10. The busbar 30 is open on one side facing the battery cell 10, and the open side covers the multiple battery cell explosion-proof valves 100 of the battery cells 10. Alternatively, the busbar 30 is provided with multiple second through holes on the side facing the battery cell 10, and the multiple second through holes are provided one-to-one with the multiple battery cell explosion-proof valves 100 of the battery cells 10. The number of battery cells 10 is set to multiple. The busbar 30 is open on one side facing the battery cell 10, and the open side covers the battery cell explosion-proof valves 100 of multiple battery cells 10. The busbar 30 is open on one side, for example, the shape of the busbar 30 can be set to C-shaped, U-shaped or L-shaped. The busbar 30 can completely cover the battery cell explosion-proof valves 100, and can release the high-temperature electrolyte released by the battery cell 10. The side of the busbar 30 facing the battery cell 10 is provided with multiple second through holes, and the multiple second through holes are set one-to-one with the multiple battery cell explosion-proof valves 100 of the battery cell 10. For example, the shape of the busbar 30 can be set to circular or rectangular. The multiple second through holes on the side of the busbar 30 facing the battery cell 10 enable the battery cell explosion-proof valves 100 to open during thermal runaway, and the high-temperature electrolyte released by the battery cell 10 can be released through the second through holes of the busbar 30, thereby ensuring the safety of the battery cell 10 and realizing the thermoelectric separation of the battery pack 1.

[0054] It should be noted that the battery pack 1 also includes: a cover plate, the upper end of the busbar 30 is open, the cover plate is placed on the tray 20, and the cover plate is sealed on the upper end of the busbar 30, and / or the lower end of the busbar 30 is open, and the bottom plate of the tray 20 is sealed on the lower end of the busbar 30. The cover plate serves to cover and seal. The upper end of the manifold 30 is open, and the cover plate covers the tray 20. The cover plate also seals the upper end of the manifold 30. The upper end of the manifold 30 can be open. By setting the cover plate, the cover plate can cover and seal the manifold 30, and / or the lower end of the manifold 30 is open. The bottom plate of the tray 20 seals and covers the lower end of the manifold 30. The lower end of the manifold 30 can also be open. For example, if the manifold 30 is L-shaped, the bottom plate of the tray 20 can cover and seal the manifold 30. When the lower end of the manifold 30 is open, the structure of the manifold 30 is simpler, which facilitates the installation and setting of the manifold 30. The upper end and the lower end of the manifold 30 can be open at the same time, or only one of the upper or lower ends can be open.

[0055] Additionally, as shown in Figures 8 and 9, the busbar 30 includes an upper plate 301, a lower plate 302, and a side plate 303. The upper plate 301 is connected to the upper end of the side plate 303 and extends toward one side of the battery cell 10. The lower plate 302 is connected to the lower end of the side plate 303 and extends toward one side of the battery cell 10. The upper plate 301, lower plate 302, and side plate 303 are components of the busbar 30. The upper plate 301 is connected to the upper end of the side plate 303 and extends towards the side of the battery cell 10. The lower plate 302 is connected to the lower end of the side plate 303 and extends towards the side of the battery cell 10. The upper plate 301 and lower plate 302 are respectively connected to the upper and lower ends of the side plate 303. At this time, the upper plate 301, lower plate 302, and side plate 303 form a whole, which facilitates the installation and setting of the busbar 30. At the same time, the upper plate 301 and lower plate 302 extend towards the side of the battery cell 10, which allows the busbar 30 to better release the high-temperature electrolyte released by the battery cell 10 and ensure the safety of the battery cell 10.

[0056] In addition, as shown in Figure 9, the busbar 30 also includes: a first latching protrusion 304 and a second latching protrusion 305. The first latching protrusion 304 is connected to the end of the upper plate 301 away from the side plate 303 and extends downward. The second latching protrusion 305 is connected to the end of the lower plate 302 away from the side plate 303 and extends upward. The first latching protrusion 304 and the second latching protrusion 305 are components of the busbar 30, both of which can be used for latching and fixing the busbar 30, so that the busbar 30 can cover the cell explosion-proof valve 100 of multiple battery cells 10. The first latching protrusion 304 is connected to the end of the upper plate 301 away from the side plate 303 and extends downward. The second latching protrusion 305 is connected to the end of the lower plate 302 away from the side plate 303 and extends upward. The first latching protrusion 304 and the second latching protrusion 305 are respectively connected to the side of the upper plate 301 and the lower plate 302 away from the side plate 303. The first latching protrusion 304 and the second latching protrusion 305 extend downward and upward respectively, so that the busbar 30 can cover the cell explosion-proof valve 100 of multiple battery cells 10 and release the high-temperature electrolyte released by the battery cells 10.

[0057] It should be noted that, as shown in Figure 9, a downwardly recessed groove 306 is provided at the connection between the lower plate 302 and the side plate 303. The groove 306 at the connection between the lower plate 302 and the side plate 303 serves as a snap-fit ​​mechanism, which simplifies the assembly process, ensures accurate positioning of components, improves the stability of the overall structure, and prevents electrolyte backflow and leakage through gaps. This avoids affecting other components within the battery pack 1 or causing more serious leakage accidents, thus protecting the safety of the battery pack.

[0058] Optionally, the busbar 30 further includes: a first extension plate and a second extension plate, the first extension plate being connected to the lower end of the upper plate 301 away from the side plate 303 and extending toward the side of the battery cell 10, and the second extension plate being connected to the upper end of the lower plate 302 away from the side plate 303 and extending toward the side of the battery cell 10. The first extension plate and the second extension plate are components of the busbar 30, which can cover the cell explosion-proof valve 100 of multiple battery cells 10. The first extension plate is connected to the lower end of the upper plate 301 away from the side plate 303 and extends towards the side of the battery cell 10. The second extension plate is connected to the upper end of the lower plate 302 away from the side plate 303 and extends towards the side of the battery cell 10. The first extension plate and the second extension plate are respectively connected to the lower end of the upper plate 301 and the upper end of the lower plate 302, and the connecting ends are away from the side plate 303. Both the first extension plate and the second extension plate extend towards the side of the battery cell 10. In this way, the busbar 30 can cover the cell explosion-proof valve 100 of multiple battery cells 10 and release the high-temperature electrolyte released by the battery cells 10.

[0059] Furthermore, as shown in Figure 1, cell 10 is a blade cell, extending along a first horizontal direction. Blade cells possess high energy density and excellent heat dissipation performance, resulting in higher safety and improved energy density and safety of battery pack 1. Therefore, designating cell 10 as a blade cell better suits actual operating conditions, enhancing the energy density and safety of battery pack 1. The blade cell's extension along the first horizontal direction optimizes space utilization and enhances heat dissipation, thereby improving the overall performance of battery pack 1 and better meeting the requirements of modern electrical equipment for range, charging speed, and safety. It should be noted that the busbar 30 can be applied to various cell 100s equipped with cell explosion-proof valves 100, and can be applied to cell explosion-proof valves 100 in various locations.

[0060] Optionally, the length direction of the blade cell is aligned with the length direction of the battery pack 1. This optimizes the space utilization of the battery pack 1, improves structural strength, facilitates thermal management and assembly, and enhances the safety of the battery pack 1. When the battery pack 1 is used in a vehicle, the length direction of the blade cell is aligned with the driving direction, which further improves the safety of the battery pack 1.

[0061] Specifically, the positive and negative terminals of the battery cell 10 are located at opposite ends in the first horizontal direction. In two adjacent battery cells 10, the positive terminal of one battery cell 10 and the negative terminal of the other battery cell 10 are connected in series at the same end in the first horizontal direction. The positive and negative terminals of each battery cell 10 are located at opposite ends in the first horizontal direction, that is, the length direction of the battery cell 10. In two adjacent battery cells 10, the positive terminal of one battery cell 10 and the negative terminal of the other battery cell 10 are connected in series at the same end in the first horizontal direction. For two adjacent battery cells 10, the positive terminal of one battery cell 10 and the negative terminal of the other battery cell 10 are connected at the same end in the first horizontal direction. This means that, sequentially, the positive terminal of the first battery cell 10 is connected to the negative terminal of the second battery cell 10. In this way, multiple battery cells 10 can be connected together, thereby increasing the total capacity of the battery pack 1 and extending the usage time of the electrical equipment.

[0062] It should be noted that, as shown in Figure 9, the cell explosion-proof valve 100 is located above both ends of the cell 10 in the first horizontal direction. Positioning the cell explosion-proof valve 100 at the top facilitates rapid pressure release, prevents electrolyte leakage and diffusion, facilitates monitoring and maintenance, and ensures the safety of the cell 10, thereby improving the safety and performance of the battery pack 1.

[0063] In addition, as shown in Figure 1, the battery pack 1 also includes a cell assembly 40, which comprises multiple cells 10 arranged along a second horizontal direction. The combination of multiple cells 10 forms the cell assembly 40, which can meet the battery performance requirements of different application scenarios and improve the stability and safety of the entire battery system. The arrangement of multiple cells 10 along the second horizontal direction in a cell assembly 40 allows for more even heat distribution, avoiding localized overheating, thereby extending the battery pack 1's lifespan and improving safety. Furthermore, arranging multiple cells 10 along the second horizontal direction simplifies the electrical connection design for series or parallel connections, reducing resistance and energy loss. Additionally, a reasonable layout enhances the mechanical strength of the entire battery pack 1, reducing damage caused by vibration or impact. It should be noted that there is a gap between the cell assembly 40 and the tray 20. To reduce electrolyte overflow into the inner cavity of the tray 20, a baffle can be installed at the gap between the cell assembly 40 and the tray 20.

[0064] Furthermore, as shown in Figure 2, the battery pack 1 also includes an explosion-proof beam 50, which is disposed between two adjacent cell groups 40. The explosion-proof beam 50 mainly enhances the safety and performance of the battery pack 1. With the explosion-proof beam 50 positioned between two adjacent cell groups 40, it ensures the safety of the entire battery pack 1. If a cell experiences thermal runaway, the explosion-proof beam 50 can prevent the rapid spread of flames and heat to adjacent cell groups 40, thereby slowing the spread of the accident and buying time for emergency measures. Secondly, the explosion-proof beam 50 also enhances the mechanical strength of the entire battery pack 1, ensuring that the battery pack 1 maintains its structural integrity when subjected to external impacts. Additionally, the explosion-proof beam 50 can help guide the directional discharge of high-pressure gas generated during thermal runaway, reducing damage to surrounding components.

[0065] The electrical equipment according to the present utility model includes: the battery pack 1 described in the above embodiments.

[0066] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0067] In the description of this utility model, "first feature" and "second feature" may include one or more of the features. In the description of this utility model, "multiple" means two or more. In the description of this utility model, "above" or "below" the second feature may include direct contact between the first and second features, or contact between the first and second features through another feature between them. In the description of this utility model, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature.

[0068] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0069] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A battery pack (1), characterized in that, include: The battery cell (10) is provided with a battery cell explosion-proof valve (100) at least one end of the battery cell (10) in the horizontal first direction. A tray (20) is provided on which the battery cell (10) is disposed. The tray (20) includes: a side beam (200) located at both ends of the battery cell (10) in a second horizontal direction, and a first channel (202) connected to the battery pack explosion-proof valve (201) is formed in the side beam (200); a busbar (30) is provided on the tray (20), and the busbar (30) and the battery cell explosion-proof valve (100) are located at the same end of the battery cell (10) in a first horizontal direction, and the busbar (30) is connected to the battery cell explosion-proof valve (100), and a second channel (300) is formed in the busbar (30), and the second channel (300) is connected to the first channel (202), and the first horizontal direction and the second horizontal direction are perpendicular to each other.

2. The battery pack (1) according to claim 1, characterized in that, The first channel (202) includes an upper cavity (203) and a lower cavity (204), the upper cavity (203) and the lower cavity (204) are connected, the second channel (300) is connected to the upper cavity (203), and the battery pack explosion-proof valve (201) is disposed in the lower cavity (204).

3. The battery pack (1) according to claim 2, characterized in that, The side beam (200) is provided with an installation port (205), which is connected to the upper cavity (203). The two ends of the manifold (30) are respectively connected to the installation port (205).

4. The battery pack (1) according to claim 2, characterized in that, The tray (20) further includes: a partition disposed within the first channel (202) to divide the first channel (202) into the upper cavity (203) and the lower cavity (204); or the side beam (200) is formed with a flange (206) that bends into the first channel (202), the flange (206) dividing the first channel (202) into the upper cavity (203) and the lower cavity (204).

5. The battery pack (1) according to claim 4, characterized in that, The partition or the flange (206) is provided with a first through hole, which connects the upper cavity (203) and the lower cavity (204).

6. The battery pack (1) according to claim 2, characterized in that, The battery pack explosion-proof valve (201) includes a valve body (208) and a sleeve (209). The valve body (208) is connected to the side of the sleeve (209) away from the battery cell (10). The sleeve (209) has at least one opening (210) in the circumferential direction, and the opening (210) communicates with the lower cavity (204).

7. The battery pack (1) according to claim 1, characterized in that, Along the second horizontal direction, the shape of the projection of the busbar (30) is C-shaped, circular, rectangular, U-shaped or L-shaped.

8. The battery pack (1) according to claim 7, characterized in that, There are multiple battery cells (10), and the busbar (30) is open on one side facing the battery cell (10), and the open side covers the battery cell explosion-proof valve (100) of multiple battery cells (10); or the busbar (30) is provided with multiple second through holes on one side facing the battery cell (10), and the multiple second through holes are provided in a one-to-one correspondence with the battery cell explosion-proof valve (100) of multiple battery cells (10).

9. The battery pack (1) according to claim 7, characterized in that, Also includes: The upper end of the manifold (30) is open, the cover plate is placed on the tray (20), and the cover plate is sealed on the upper end of the manifold (30); and / or the lower end of the manifold (30) is open, and the bottom plate of the tray (20) is sealed on the lower end of the manifold (30).

10. The battery pack (1) according to claim 1, characterized in that, The busbar (30) includes an upper plate (301), a lower plate (302) and a side plate (303). The upper plate (301) is connected to the upper end of the side plate (303) and extends toward one side of the battery cell (10). The lower plate (302) is connected to the lower end of the side plate (303) and extends toward one side of the battery cell (10).

11. The battery pack (1) according to claim 10, characterized in that, The manifold (30) further includes: a first latching protrusion (304) and a second latching protrusion (305), wherein the first latching protrusion (304) is connected to the end of the upper plate (301) away from the side plate (303) and extends downward, and the second latching protrusion (305) is connected to the end of the lower plate (302) away from the side plate (303) and extends upward.

12. The battery pack (1) according to claim 11, characterized in that, A downwardly recessed groove (306) is provided at the connection between the lower plate (302) and the side plate (303).

13. The battery pack (1) according to claim 10, characterized in that, The busbar (30) further includes: a first extension plate and a second extension plate, the first extension plate being connected to the lower end of the upper plate (301) away from the side plate (303) and extending toward the side of the battery cell (10), and the second extension plate being connected to the upper end of the lower plate (302) away from the side plate (303) and extending toward the side of the battery cell (10).

14. The battery pack (1) according to claim 1, characterized in that, The battery cell (10) is a blade battery cell, which extends along a first horizontal direction.

15. The battery pack (1) according to claim 14, characterized in that, The length direction of the blade cell is consistent with the length direction of the battery pack (1).

16. The battery pack (1) according to claim 1, characterized in that, The positive and negative terminals of the battery cell (10) are located at the two ends of the horizontal first direction, respectively. In two adjacent battery cells (10), the positive terminal of one battery cell (10) and the negative terminal of the other battery cell (10) are connected in series at the same end of the horizontal first direction.

17. The battery pack (1) according to claim 1, characterized in that, The cell explosion-proof valve (100) is located above both ends of the cell (10) in the first horizontal direction.

18. The battery pack (1) according to claim 1, characterized in that, Also includes: A battery cell assembly (40) comprising a plurality of battery cells (10) arranged along a second horizontal direction.

19. The battery pack (1) according to claim 18, characterized in that, Also includes: An explosion-proof beam (50) is provided between two adjacent battery cell groups (40).

20. An electrical appliance, characterized in that, include: The battery pack (1) according to any one of claims 1-19.

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