Battery device and energy storage equipment

Abstract

The utility model provides a battery device and energy storage equipment, and the battery device comprises a battery cell support; the at least one battery cell is arranged on the battery cell bracket; the isolation bracket is arranged on the battery cell bracket, the isolation bracket is provided with a first groove body, a second groove body and an isolation part, and the isolation part is positioned between the first groove body and the second groove body so as to isolate the first groove body from the second groove body; the cover plate is arranged on the isolation support and covers the second groove body, so that a first exhaust channel is defined by the cover plate and the second groove body; a connecting pole and an anti-explosion valve are arranged on the battery cell, at least part of the connecting pole is located in the first groove body, at least part of the anti-explosion valve is located in the first exhaust channel, and under the condition that the anti-explosion valve is opened, substances discharged by the battery cell are discharged into the first exhaust channel. According to the battery device provided by the utility model, the connecting pole and the explosion-proof valve are separated through the isolating bracket, so that the thermal runaway pressure relief area and the electric connection area of the battery device are prevented from being positioned in the same space.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, specifically to a battery device and an energy storage device. Background Technology

[0002] Currently, in related technologies, the explosion-proof valve and connecting terminal of the battery device are located in the same space. Consequently, the thermal runaway pressure relief area and the electrical connection area of ​​the battery device are located in the same space. When the cell experiences thermal runaway, the electrolyte and flammable gas released may fill the entire battery device, easily splashing onto the connecting terminal and the structure connected to the connecting terminal, reducing insulation and increasing the risk of high-voltage arcing, fire, and explosion. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art or related technologies.

[0004] Therefore, the first aspect of this utility model proposes a battery device.

[0005] The second aspect of this utility model proposes an energy storage device.

[0006] In view of the above, the first aspect of the present invention provides a battery device, comprising: a cell support; at least one cell disposed on the cell support; an isolation support disposed on the cell support, the isolation support having a first groove, a second groove, and an isolation portion, the isolation portion being located between the first groove and the second groove to isolate the first groove from the second groove; a cover plate disposed on the isolation support, the cover plate covering the second groove to form a first venting channel with the second groove; a connecting terminal and an explosion-proof valve disposed on the cell, at least a portion of the connecting terminal being located in the first groove, and at least a portion of the explosion-proof valve being located in the first venting channel, wherein, when the explosion-proof valve is open, the substance discharged from the cell is discharged into the first venting channel.

[0007] The battery device proposed in this utility model includes a cell support, at least one battery cell, an isolation support, and a cover plate. The cell support serves as a support structure for the battery cell, used to securely mount the cell and ensure its stability and safety during operation. The battery cell is the core component of the battery device, used to store and release electrical energy. The number of battery cells is at least one; that is, there can be one or more battery cells.

[0008] An isolation bracket is mounted on the cell support and includes a first cell, a second cell, and an isolation section. The isolation section is located between the first and second cells, effectively isolating them and preventing them from communicating with each other.

[0009] A cover plate is mounted on an isolation bracket and covers the second tank, forming a first venting channel together with the second tank. The first venting channel provides a unified discharge or collection path for electrolytes and flammable gases released by the battery cell during thermal runaway.

[0010] The battery cell is equipped with a connecting terminal and an explosion-proof valve. At least a portion of the connecting terminal is located in a first tank, and at least a portion of the explosion-proof valve is located in a second tank. When the explosion-proof valve is open, the material discharged from the battery cell enters a first venting channel. The first and second tanks are separated, thus separating the connecting terminal in the first tank from the explosion-proof valve in the first venting channel, placing them in different tanks.

[0011] The connecting terminal is a component of the battery cell used to connect to the sampling circuit, forming the high and low voltage electrical connection area. The explosion-proof valve is a component of the battery cell used for thermal runaway management. Thus, this application separates the thermal runaway pressure relief area of ​​the battery device from the high and low voltage electrical connection area in different spaces. The electrolyte and combustible gas released by the battery cell during thermal runaway will only be discharged into the first exhaust channel. Due to the isolation between the first tank and the second tank, they will not flow to the connecting terminal, will not flow into the high and low voltage electrical connection area, and will not fill the entire battery device, thus achieving effective isolation between material discharge and the electrical connection area.

[0012] The independent first vent channel corresponds directly to the explosion-proof valve of the battery cell, allowing the released substances to be quickly discharged or collected and treated, avoiding contamination of other components in the battery device and improving the stability and reliability of the entire battery device.

[0013] In addition, the battery device in the above-mentioned technical solution provided by this utility model may also have the following additional technical features:

[0014] Optionally, in some technical solutions of this utility model, the isolation bracket also has a first through hole, which is connected to the first groove, and the connecting pole is inserted through the first through hole.

[0015] In this technical solution, the isolation bracket is provided with a first through hole, which is connected to the first groove.

[0016] Specifically, when the isolation bracket is set on the cell bracket, its bottom surface is closer to the cell, and the bottom wall of the first groove is opened on the bottom surface. The first groove extends in a direction away from the bottom surface. Therefore, in order to realize the connection pole passing through the first groove, the present invention correspondingly opens a first through hole on the bottom surface of the isolation bracket, that is, opens a first through hole on the bottom wall of the first groove.

[0017] The first through hole corresponds to the connecting terminal. When the isolation bracket is installed on the cell bracket, the connecting terminal passes through the first through hole and is located in the first groove, thereby achieving isolation from the explosion-proof valve. When the explosion-proof valve discharges substances during thermal runaway of the cell, it will not affect the connecting terminal, thus preventing dangerous substances discharged by the cell after thermal runaway from intertwining with the connecting terminal, damaging components, or even causing high-voltage arcing, and ensuring the safety of the battery device.

[0018] In some technical solutions of this utility model, optionally, there are multiple battery cells arranged along the length direction of the battery cell support; there are multiple first through holes, and one connecting electrode is inserted through one first through hole.

[0019] In this technical solution, the battery device includes multiple battery cells arranged along the length of a cell support. There are multiple cells, and the isolation support has multiple first through holes. Each first through hole corresponds to a connection terminal on a battery cell. Each cell's connection terminal passes through its corresponding first through hole and enters the first groove, thus being protected.

[0020] Optionally, in some technical solutions of this utility model, the isolation bracket also has a second through hole, which is connected to the second groove, and the explosion-proof valve passes through the second through hole.

[0021] In this technical solution, when the isolation bracket is set on the cell bracket, its bottom surface is closer to the cell, and the bottom wall of the second tank is opened on the bottom surface. The second tank extends in a direction away from the bottom surface. Therefore, in order to realize the explosion-proof valve to pass through the second tank, the present invention correspondingly opens a second through hole on the bottom surface of the isolation bracket, that is, opens a second through hole on the bottom wall of the second tank.

[0022] The second through hole corresponds to the connecting terminal. When the isolation bracket is installed on the cell bracket, the connecting terminal passes through the second through hole and is located in the second groove, thereby achieving isolation from the connecting terminal. When the explosion-proof valve discharges substances during thermal runaway of the cell, it will not affect the connecting terminal, preventing dangerous substances discharged by the cell after thermal runaway from intertwining with the connecting terminal, damaging components or even causing high-voltage arcing, thus ensuring the safety of the battery device.

[0023] In some technical solutions of this utility model, optionally, there are multiple battery cells arranged along the length direction of the battery cell support; there are multiple second through holes, and an explosion-proof valve is inserted through one second through hole.

[0024] In this technical solution, the battery device includes multiple battery cells arranged along the length of the cell support. Due to the large number of cells, multiple second through-holes are required on the isolation support. Each second through-hole corresponds to an explosion-proof valve on one of the cells. The isolation support is designed with an independent vent for each cell's explosion-proof valve. When a cell experiences thermal runaway, the explosion-proof valve opens, releasing substances that enter the venting channel formed by the isolation support and the cover plate for collection and discharge.

[0025] In some technical solutions of this utility model, optionally, one end of the isolation part is connected to the first groove, and the other end of the isolation part is connected to the second groove.

[0026] In this technical solution, the isolation bracket includes a first groove, an isolation section, and a second groove. One end of the isolation section is connected to the first groove, and the other end of the isolation section is connected to the second groove, thereby separating the isolation bracket into two areas.

[0027] Optionally, in some technical solutions of this utility model, the battery device further includes: a first sealing member, disposed on one side of the isolation bracket, located between the isolation bracket and the cover plate, for sealing the gap between the isolation bracket and the cover plate.

[0028] In this technical solution, the battery device also includes a first seal, which is disposed on one side of the isolation bracket and located between the isolation bracket and the cover plate. Specifically, one side of the first seal is tightly connected to the isolation bracket, and the other side is tightly connected to the cover plate. The main function of the first seal is to enhance the sealing performance of the exhaust channel. The first seal effectively seals the gap between the isolation bracket and the cover plate, preventing leakage of substances during the exhaust process.

[0029] In some technical solutions of this utility model, optionally, along the width direction of the isolation bracket, the minimum distance between the end face of the cover plate covering the second groove and the side of the isolation bracket near the battery cell is greater than or equal to 8mm.

[0030] In this technical solution, ensuring sufficient space for the explosion-proof valve to open within the battery device is crucial. In this invention, the minimum distance between the end face of the cover plate and the side of the isolation bracket closest to the battery cell in the width direction of the isolation bracket is greater than or equal to 8mm. This provides sufficient opening space for the explosion-proof valve, preventing it from hitting the cover plate and failing to open. When the internal pressure of the battery cell abnormally increases, the explosion-proof valve can open smoothly, allowing the battery cell material to be discharged.

[0031] Optionally, in some technical solutions of this utility model, the battery device further includes a sampling circuit, which is connected to the connecting terminal and located in the first tank.

[0032] In this technical solution, the battery device also includes a sampling circuit, which serves as a bridge connecting the battery management system and the battery cells of the battery device. It is a component that ensures the efficient and safe operation of the battery device.

[0033] The sampling circuit is located in the first tank of the battery pack, closely connected to the connecting terminal of the battery cell. This design ensures that the sampling circuit can directly and accurately obtain the voltage and current information of the battery cell without going through complex transmission paths or conversion processes.

[0034] This invention isolates the sampling circuit through the first tank and the explosion-proof valve through the exhaust channel. The design of the isolation bracket and cover provides good protection for the sampling circuit and separates the thermal runaway pressure relief area of ​​the battery cell from the electrical connection area, thus avoiding damage to key components such as the sampling circuit by the electrolyte and flammable gas released by the battery cell during thermal runaway.

[0035] In some technical solutions of this utility model, optionally, the sampling circuit includes: a conductive aluminum bar connected to a connecting electrode post; and a sampling circuit board connected to the conductive aluminum bar, the sampling circuit board being used to collect parameters of the battery cell.

[0036] In this technical solution, the sampling circuit specifically includes a conductive aluminum bar and a sampling circuit board. The conductive aluminum bar contacts the connecting terminal of the battery cell, serving as both an electrical connection and a signal transmission terminal. The sampling circuit board is used to collect key parameters of the battery cell, such as voltage and current, and transmit this information to the battery management system. Through the coordinated operation of the conductive aluminum bar and the sampling circuit board, real-time monitoring and acquisition of key parameters such as voltage and current of the battery cell are achieved.

[0037] In some technical solutions of this utility model, optionally, the battery cell support includes: a support member, on which at least one battery cell is disposed; and an end plate disposed on the support member, located on both sides of the support member, for constraining the expansion direction of the battery cell.

[0038] In this technical solution, the cell support includes a support member and end plates. The support member is the main structure of the cell support, and its main function is to support and fix the cell. The end plates are located on both sides of the support member, and their main function is to constrain the expansion direction of the cell.

[0039] During the charging and discharging process of a battery, the battery cell will expand due to internal chemical reactions. If this expansion is not effectively restrained, it may cause the battery cell to deform, crack, or even cause a safety accident. This utility model ensures the safe operation of the battery device through the design of the end plate.

[0040] Optionally, in some technical solutions of this utility model, the end plate is provided with a second exhaust channel, which is connected to the first exhaust channel; the battery device also includes: a first pipe connected to the side of the end plate away from the battery cell, which is connected to the second exhaust channel, wherein the explosion-proof valve is opened, and the material discharged from the battery cell is discharged from the battery device through the first exhaust channel, the second exhaust channel and the first pipe.

[0041] In this technical solution, the present invention also provides a first pipe and a second exhaust pipe in the battery device to discharge the material discharged from the battery cell into the battery device.

[0042] The first exhaust channel is enclosed by a cover plate and a second tank of an isolation bracket, forming a closed passage. When the internal pressure of the battery cell increases, the explosion-proof valve opens, and harmful substances inside the battery cell are discharged into the first exhaust channel. The second exhaust channel is located on the end plate and is connected to the first exhaust channel. As an extension of the first exhaust channel, the second exhaust channel ensures that harmful substances can be discharged smoothly.

[0043] The first conduit connects to the side of the end plate opposite to the battery cell and is connected to the second exhaust channel. As an extension of the emission path, the first conduit guides harmful substances from inside the battery device to the external environment, achieving unified treatment of substances emitted from the battery cell.

[0044] Optionally, in some technical solutions of this utility model, the battery device further includes: a one-way valve, which is disposed on the end plate and is connected to the second exhaust channel and the first pipe respectively, and the conduction direction of the one-way valve is from the second exhaust channel to the first pipe.

[0045] In this technical solution, the present invention controls the emission direction of the substance to avoid backflow of the substance.

[0046] The battery device also includes a one-way valve, which is a structure in the battery device used to control the flow direction of substances discharged from the battery cell after thermal runaway.

[0047] A one-way valve is mounted on the end plate and connects to both the second exhaust channel and the first pipe. The one-way valve's conduction direction is from the second exhaust channel to the first pipe. Under normal circumstances, the one-way valve is closed to prevent substances from entering the battery device. When the internal pressure of the battery cell increases, the one-way valve automatically opens, allowing harmful substances in the second exhaust channel to be discharged into the first pipe, thereby exiting the battery device and ensuring rapid response and effective discharge under abnormal conditions.

[0048] Optionally, in some technical solutions of this utility model, the battery device further includes: a second sealing member, which is connected to the first exhaust channel and the second exhaust channel respectively, for sealing the gap between the first exhaust channel and the second exhaust channel.

[0049] In this technical solution, a sealing component is also provided for the venting section. The battery device also includes a second sealing element, which is connected to both the first and second venting channels to seal the gap between them. The second sealing element is a structure in the battery device used to seal the gap between the venting channels, preventing harmful substances from leaking into other parts of the battery device or the external environment during the venting process. This avoids dangerous substances emitted after thermal runaway of the battery cell from becoming intertwined with the electrical connection circuit or sampling circuit, damaging components or even causing high-voltage arcing. Furthermore, because the independent venting pipe leads directly to the cell's explosion-proof valve, it prevents the released substances from contaminating other components in the battery system, thus avoiding greater economic losses and risks, and improving the sealing performance and safety of the battery device.

[0050] Optionally, in some technical solutions of this utility model, the battery device further includes: a liquid cooling plate disposed on the cell support; and a thermally conductive structural adhesive, one side of which is connected to the liquid cooling plate and the other side of which is connected to the cell for heat exchange.

[0051] In this technical solution, the battery device also includes a liquid cooling plate and a thermally conductive structural adhesive, which are structures used for temperature regulation in the battery device.

[0052] A liquid cooling plate is mounted on the cell support, and either a cryogenic coolant or a high-temperature liquid can circulate within it. One side of the thermally conductive structural adhesive is connected to the liquid cooling plate, and the other side is connected to the cell, facilitating heat exchange. The primary function of the thermally conductive structural adhesive is to transfer the heat generated by the cell to the liquid cooling plate. When the cell temperature is high, the cryogenic coolant carries away the heat; when the cell temperature is low, the high-temperature liquid raises the cell temperature.

[0053] The second aspect of this utility model provides an energy storage device, which includes at least one battery device as described in any of the above technical solutions.

[0054] The energy storage device proposed in the second aspect of this utility model includes at least one battery device as described in any of the above technical solutions, and therefore has all the beneficial effects of the battery device, which will not be elaborated here.

[0055] Optionally, in some technical solutions of this utility model, the energy storage device further includes: a second pipe connected to the first exhaust channel, wherein the material discharged from the battery cell is discharged into the second pipe through the first exhaust channel and then discharged from the energy storage device.

[0056] In this technical solution, the energy storage device also includes a second pipe, which is connected to the first exhaust channel. The second pipe is the main exhaust pipe of the energy storage device. The material discharged from the battery cell is discharged into the second pipe through the first exhaust channel and then discharged from the energy storage device.

[0057] This invention utilizes a dedicated second pipe to effectively discharge substances emitted by the battery cell during thermal runaway into the energy storage device. The unified emission and collection processing structure simplifies the subsequent treatment of the battery cell's exhaust substances.

[0058] 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

[0059] 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:

[0060] Figure 1 One of the structural schematic diagrams of a battery device according to an embodiment of the present invention is shown;

[0061] Figure 2 A schematic diagram of the structure of the isolation bracket of a battery device according to an embodiment of the present invention is shown;

[0062] Figure 3 A second schematic diagram of the structure of a battery device according to an embodiment of the present invention is shown;

[0063] Figure 4 One of the partial structural schematic diagrams of a battery device according to an embodiment of the present invention is shown;

[0064] Figure 5 One of the structural schematic diagrams of the cell support of a battery device according to an embodiment of the present invention is shown;

[0065] Figure 6 A third schematic diagram of the structure of a battery device according to an embodiment of the present invention is shown;

[0066] Figure 7 A fourth schematic diagram of the structure of a battery device according to an embodiment of the present invention is shown;

[0067] Figure 8 Fifth schematic diagram of a battery device according to an embodiment of the present invention is shown;

[0068] Figure 9 A second schematic diagram of the structure of the cell support of a battery device according to an embodiment of the present invention is shown;

[0069] Figure 10 A second partial structural schematic diagram of a battery device according to an embodiment of the present invention is shown;

[0070] Figure 11 A schematic diagram of the structure of an energy storage device according to an embodiment of the present invention is shown;

[0071] in, Figures 1 to 11 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0072] 10 Energy storage device, 100 Battery unit, 110 Cell bracket, 112 Support, 114 End plate, 116 Second mounting hole, 118 Third mounting hole, 120 Second venting channel, 130 Cell, 132 Connecting terminal post, 134 Explosion-proof valve, 140 Isolation bracket, 142 First tank, 144 Second tank, 146 Isolation part, 148 First through hole, 150 Second through hole, 152 Vent hole, 154 First mounting hole, 160 Cover plate, 170 First venting channel, 180 Sampling circuit, 182 Conductive aluminum bar, 184 Sampling circuit board, 190 First seal, 192 First pipe, 194 One-way valve, 196 Second seal, 198 Liquid cooling plate, 199 Thermally conductive structural adhesive, 200 Second pipe. Detailed Implementation

[0073] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0074] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0075] The following reference Figures 1 to 11 This invention describes a battery device 100 and an energy storage device 10 according to some embodiments of the present invention.

[0076] like Figure 1 and Figure 2As shown, in some embodiments of this utility model, a battery device 100 is proposed, including: a cell support 110; at least one cell 130 disposed on the cell support 110; an isolation support 140 disposed on the cell support 110, the isolation support 140 having a first groove 142, a second groove 144 and an isolation portion 146, the isolation portion 146 being located between the first groove 142 and the second groove 144 to isolate the first groove 142 from the second groove 144; and a cover plate. 160 is disposed on the isolation bracket 140, and the cover plate 160 covers the second tank 144 to form a first exhaust channel 170 with the second tank 144; the battery cell 130 is provided with a connecting post 132 and an explosion-proof valve 134, at least a portion of the connecting post 132 is located in the first tank 142, and at least a portion of the explosion-proof valve 134 is located in the first exhaust channel 170, wherein, when the explosion-proof valve 134 is open, the substance discharged from the battery cell 130 is discharged into the first exhaust channel 170.

[0077] In this embodiment, the battery device 100 proposed by this utility model includes a cell support 110, at least one battery cell 130, an isolation support 140, and a cover plate 160. The cell support 110 serves as a support structure for the battery cell 130, and is used to securely mount the battery cell 130, ensuring the stability and safety of the battery cell 130 during operation. The battery cell 130 is the core component of the battery device 100, used for storing and releasing electrical energy. The number of battery cells 130 is at least one; that is, there can be one or more battery cells 130.

[0078] like Figure 1 and Figure 2 As shown, the isolation bracket 140 is disposed on the cell bracket 110 and has a first slot 142, a second slot 144 and an isolation section 146. The isolation section 146 is located between the first slot 142 and the second slot 144, effectively isolating the first slot 142 and the second slot 144, so that the first slot 142 and the second slot 144 are not connected to each other.

[0079] A cover plate 160 is mounted on the isolation bracket 140 and covers the second tank 144, forming a first exhaust channel 170 together with the second tank 144. The first exhaust channel 170 provides a unified discharge or collection path for the electrolyte and flammable gases released by the battery cell 130 during thermal runaway.

[0080] like Figure 2 and Figure 3As shown, the battery cell 130 is provided with a connecting post 132 and an explosion-proof valve 134. At least a portion of the connecting post 132 is located in the first tank 142, and at least a portion of the explosion-proof valve 134 is located in the second tank 144. When the explosion-proof valve 134 is open, the material discharged from the battery cell 130 is discharged into the first exhaust channel 170. The first tank 142 and the second tank 144 are separated, which in turn separates the connecting terminal 132 located in the first tank 142 from the explosion-proof valve 134 located in the first exhaust channel 170, placing them in different tanks. The connecting terminal 132 is the component of the battery cell 130 used to connect to the sampling circuit 180, and the explosion-proof valve 134 is the component of the battery cell 130 used for thermal runaway management. Thus, this application separates the thermal runaway pressure relief area of ​​the battery device 100 from the high and low voltage electrical connection lines in different spaces. The electrolyte and combustible gas released by the battery cell 130 during thermal runaway will only be discharged into the first exhaust channel 170. Due to the isolation between the first tank 142 and the second tank 144, they will not flow to the connecting terminal 132, nor into the high and low voltage electrical connection line area, and will not fill the entire battery device 100, thus achieving effective isolation between material discharge and the electrical connection area.

[0081] When thermal runaway occurs in cell 130, the internal pressure of cell 130 will rise sharply, causing the explosion-proof valve 134 to open. At this time, the electrolyte and flammable gas released from cell 130 will enter the second tank 144 through the explosion-proof valve 134, and then enter the first venting channel 170 enclosed by the cover plate 160 and the second tank 144. Due to the presence of the first tank 142 and the first venting channel 170, these hazardous substances are effectively isolated from critical components such as the connecting terminal 132, thus not affecting the circuitry of the battery device 100.

[0082] The independent first exhaust channel 170 directly corresponds to the explosion-proof valve 134 of the battery cell 130, allowing the released substances to be quickly discharged or collected and treated, avoiding contamination of other components in the battery device 100, and improving the stability and reliability of the entire battery device 100.

[0083] By reducing the damage to other components within the battery device 100 caused by thermal runaway of the battery cell 130, this invention helps to reduce the maintenance and replacement costs of the battery device 100. At the same time, due to the increased stability and reliability of the system, it also reduces economic losses caused by downtime due to malfunctions.

[0084] In summary, the battery device 100 proposed in this utility model separates the connecting terminal 132 and the explosion-proof valve 134 through the isolation bracket 140, effectively eliminating the safety hazards caused by the thermal runaway pressure relief area of ​​the battery device 100 being located in the same space as the high and low voltage electrical connection lines, thereby improving the safety and stability of the battery device 100.

[0085] Specifically, this application is designed for blade batteries. On a cell 130, there are two explosion-proof valves 134 and two connecting terminals 132. Along the length of the cell 130, one of the two explosion-proof valves 134 is located on one side of the cell 130, and the other explosion-proof valve 134 is located on the other side of the cell 130, so as to achieve dual-sided discharge.

[0086] Along the length of the cell 130, one of the two connecting terminals 132 is located on one side of the cell 130, and the other connecting terminal 132 is located on the other side of the cell 130, thus achieving a double-sided connection.

[0087] Specifically, the isolation bracket 140 and the cover plate 160 can simultaneously act on multiple battery cells 130, that is, the connecting terminals 132 of multiple battery cells 130 can be simultaneously located in the first groove 142 of an isolation bracket 140. The explosion-proof valves 134 of multiple battery cells 130 can be simultaneously located in the exhaust channel formed by the second groove 144 of an isolation bracket 140 and the cover plate 160. Specifically, the explosion-proof valves 134 and the connecting terminals 132 are spaced apart along the direction of gravity.

[0088] Specifically, the explosion-proof component also includes a first snap-fit ​​part disposed on the isolation bracket 140; and a second snap-fit ​​part disposed on the cover plate 160, wherein the second snap-fit ​​part can snap into the first snap-fit ​​part.

[0089] like Figure 2 As shown, the isolation bracket 140 is provided with a first mounting hole 154. The first mounting hole 154 and the first snap-fit ​​part are located on opposite sides of the isolation bracket 140, and the connecting bolt passes through the first mounting hole 154. In this utility model, for the cooperation design between the cover plate 160 and the isolation bracket 140, one side adopts a snap-fit ​​structure, and the other side uses fasteners and rivets passing through the first mounting hole 154 to fix the two plates.

[0090] Specifically, the explosion-proof valve 134, also known as a safety valve or explosion-proof disc, is a safety device installed on the battery cell 130. When the internal pressure of the battery cell 130 rises abnormally, the explosion-proof valve 134 can automatically open to release the internal pressure, thereby preventing the battery cell 130 from exploding due to excessive pressure.

[0091] The working principle of the explosion-proof valve 134 is based on the pressure balance principle. When a large amount of gas is generated inside the battery cell 130, causing the pressure to rise, the valve plate of the explosion-proof valve 134 will deform under the pressure. When the pressure reaches a certain level, the valve plate will suddenly break or open, thereby releasing the internal pressure. In this process, the explosion-proof valve 134 can respond quickly and effectively prevent the battery cell 130 from exploding.

[0092] like Figure 2 , Figure 3and Figure 4 As shown, in some embodiments of the present invention, optionally, the isolation bracket 140 also has a first through hole 148, which communicates with the first groove 142, and the connecting pole 132 passes through the first through hole 148.

[0093] In this embodiment, the isolation bracket 140 is provided with a first through hole 148, which communicates with the first groove 142. Specifically, when the isolation bracket 140 is set on the cell bracket 110, its bottom surface is closer to the cell 130, and the bottom wall of the first groove 142 is opened on the bottom surface. The first groove 142 extends in a direction away from the bottom surface. Therefore, in order to realize that the connecting pole 132 passes through the first groove 142, the present invention correspondingly opens the first through hole 148 on the bottom surface of the isolation bracket 140, that is, opens the first through hole 148 on the bottom wall of the first groove 142.

[0094] The first through hole 148 corresponds to the connecting terminal 132. When the isolation bracket 140 is installed on the cell bracket 110, the connecting terminal 132 passes through the first through hole 148 and is located in the first groove 142, thereby achieving isolation from the explosion-proof valve 134. When the explosion-proof valve 134 discharges substances during thermal runaway of the cell 130, it will not affect the connecting terminal 132, thus preventing the dangerous substances discharged by the cell 130 after thermal runaway from intertwining with the connecting terminal 132, damaging components or even causing high-voltage arcing, and ensuring the safe use of the battery device 100.

[0095] like Figure 3 , Figure 4 and Figure 5 As shown, in some embodiments of this utility model, optionally, there are multiple battery cells 130, and multiple battery cells 130 are arranged along the length direction of the battery cell support 110; there are multiple first through holes 148, and a connecting pole 132 passes through a first through hole 148.

[0096] In this embodiment, the battery device 100 includes a plurality of battery cells 130, which are arranged along the length of the battery cell support 110 (e.g., ...). Figure 5 (As indicated by arrow A in the diagram). This layout maximizes the use of space in the battery unit 100 and increases energy density.

[0097] There are multiple battery cells 130, and multiple first through holes 148 are provided on the isolation bracket 140. Each first through hole 148 corresponds to a connecting terminal 132 on a battery cell 130. The connecting terminal 132 of each battery cell 130 passes through the corresponding first through hole 148 and enters the first groove 142, thereby being protected.

[0098] like Figure 2 , Figure 3 and Figure 4 As shown, in some embodiments of the present invention, optionally, the isolation bracket 140 also has a second through hole 150, which is connected to the second groove 144, and the explosion-proof valve 134 passes through the second through hole 150.

[0099] In this embodiment, the second through hole 150 on the isolation bracket 140 is in communication with the second groove 144. This communication design allows the explosion-proof valve 134 to pass through the second through hole 150 and be accurately positioned in the second groove 144. The second groove 144 serves as a dedicated area, providing sufficient space and protection for the explosion-proof valve 134 to ensure that it can open normally and release pressure when the internal pressure of the battery device 100 is too high.

[0100] Because the explosion-proof valve 134 is installed in the second tank 144, it can also effectively prevent substances such as electrolyte and flammable gas from leaking into other parts of the battery device 100 in the event of battery thermal runaway. By installing the explosion-proof valve 134 in the second tank 144 and implementing it through the second through hole 150, the safety of the battery device 100 can be improved.

[0101] Specifically, when the isolation bracket 140 is set on the cell bracket 110, its bottom surface is closer to the cell 130, and the bottom wall of the second groove 144 is opened on the bottom surface. The second groove 144 extends in a direction away from the bottom surface. Therefore, in order to realize that the explosion-proof valve 134 passes through the second groove 144, the present invention correspondingly opens a second through hole 150 on the bottom surface of the isolation bracket 140, that is, opens a second through hole 150 on the bottom wall of the second groove 144.

[0102] The second through hole 150 corresponds to the connecting terminal 132. When the isolation bracket 140 is installed on the cell bracket 110, the connecting terminal 132 passes through the second through hole 150 and is located in the second groove 144, thereby achieving isolation from the connecting terminal 132. When the explosion-proof valve 134 discharges substances during thermal runaway of the cell 130, it will not affect the connecting terminal 132, thus preventing the dangerous substances discharged by the cell 130 after thermal runaway from intertwining with the connecting terminal 132, damaging components or even causing high-voltage arcing, and ensuring the safe use of the battery device 100.

[0103] like Figure 3 , Figure 4 and Figure 5 As shown, in some embodiments of this utility model, optionally, there are multiple battery cells 130, and multiple battery cells 130 are arranged along the length direction of the battery cell support 110; there are multiple second through holes 150, and an explosion-proof valve 134 passes through one second through hole 150.

[0104] In this embodiment, the battery device 100 includes a plurality of battery cells 130, which are arranged along the length of the battery cell support 110 (e.g., ...). Figure 5 (Arranged in the direction indicated by arrow A in the diagram). This layout maximizes the use of space in the battery device 100 and improves energy density. Since there are multiple battery cells 130, multiple second through holes 150 need to be provided on the isolation bracket 140. Each second through hole 150 corresponds to an explosion-proof valve 134 on a battery cell 130. The isolation bracket 140 is designed with an independent vent for each explosion-proof valve 134 of the battery cell 130. When the battery cell 130 experiences thermal runaway, the explosion-proof valve 134 opens and the released material enters the first venting channel 170 formed by the isolation bracket 140 and the cover plate 160 for collection and discharge.

[0105] like Figure 2 As shown, in some embodiments of the present invention, optionally, one end of the isolation part 146 is connected to the first groove 142, and the other end of the isolation part 146 is connected to the second groove 144.

[0106] In this embodiment, the isolation bracket 140 includes a first groove 142, an isolation portion 146, and a second groove 144. One end of the isolation portion 146 is connected to the first groove 142, and the other end of the isolation portion 146 is connected to the second groove 144, thereby separating the isolation bracket 140 into two regions.

[0107] Specifically, the isolation section 146 can be used to form two spaced-apart grooves on the isolation bracket 140.

[0108] Specifically, the isolation section 146 can also be used as a common wall of the first tank 142 and the second tank 144, that is, one end of the isolation section 146 is part of the first tank 142, and the other end of the isolation section 146 is part of the second tank 144.

[0109] Specifically, the isolation section 146, the first tank 142, and the second tank 144 are an integral structure.

[0110] like Figure 6 and Figure 7 As shown, in some embodiments of the present invention, the battery device 100 may optionally include: a first sealing member 190, disposed on one side of the isolation bracket 140, located between the isolation bracket 140 and the cover plate 160, for sealing the gap between the isolation bracket 140 and the cover plate 160.

[0111] In this embodiment, the battery device 100 further includes a first seal 190, which is disposed on one side of the isolation bracket 140 and located between the isolation bracket 140 and the cover plate 160. That is, one side of the first seal 190 is tightly connected to the isolation bracket, and the other side of the first seal 190 is tightly connected to the cover plate 160.

[0112] The main function of the first seal 190 is to enhance the sealing of the exhaust passage. The first seal 190 effectively seals the gap between the isolation bracket 140 and the cover plate 160 to prevent leakage of substances during the discharge process.

[0113] By ensuring the airtightness of the vent passage, the first seal 190 prevents substances generated during battery thermal runaway from leaking into other parts of the battery device 100, thus helping to improve the overall safety and stability of the battery device 100.

[0114] Specifically, the first seal 190 can be a solid seal ring, a liquid seal silicone, a ceramic seal ring, or a rubber seal ring.

[0115] Specifically, in this utility model, the first sealing element 190 is a ceramic silicone cloth, which is a composite material with high temperature resistance, fire resistance and flame retardancy and electrical insulation.

[0116] The ceramic silicone cloth can effectively seal the gap between the isolation bracket 140 and the cover plate 160, preventing the substances discharged from the cell 130 from leaking to the outside and ensuring the environmental stability inside the battery device 100.

[0117] The fire-retardant and electrical insulation properties of ceramic silicone cloth help reduce the safety risks of battery device 100 and prevent fires and short circuits.

[0118] like Figure 8 As shown, in some embodiments of this utility model, optionally, along the width direction of the isolation bracket 140, the minimum distance between the end face of the cover plate 160 covering the second groove 144 and the side of the isolation bracket 140 near the battery cell 130 is greater than or equal to 8mm.

[0119] In this embodiment, ensuring sufficient space for the explosion-proof valve 134 to open is crucial in the battery device 100. In this invention, in the width direction of the isolation bracket 140 (e.g., Figure 8(As indicated by arrow B in the image), the minimum distance d between the end face of the cover plate 160 covering the second tank 144 and the side of the isolation bracket 140 near the battery cell 130 is greater than or equal to 8mm, so that the explosion-proof valve 134 has sufficient opening space and will not hit the cover plate 160 and fail to open when it is opened. When the internal pressure of the battery cell 130 rises abnormally, the explosion-proof valve 134 can open smoothly to discharge the contents of the battery cell 130.

[0120] Specifically, the activation method of the explosion-proof valve 134 includes either a flip-type or an external spring-loaded type.

[0121] Along the width direction of the isolation bracket 140, the maximum distance between the end face of the cover plate 160 covering the second groove 144 and the side of the isolation bracket 140 near the cell 130 is less than or equal to 15mm, so as to avoid making the overall volume of the battery device 100 too large.

[0122] Specifically, the minimum distance d between the end face of the cover plate 160 that covers the second groove 144 and the side of the isolation bracket 140 near the cell 130 can be 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm or 15mm.

[0123] like Figure 1 and Figure 2 As shown, in some embodiments of the present invention, the battery device 100 may optionally include a sampling circuit 180, which is connected to the connecting terminal 132 and located in the first tank 142.

[0124] In this embodiment, the battery device 100 also includes a sampling circuit 180, which is a bridge connecting the battery management system and the battery cell 130 of the battery device 100, and is a component that ensures the efficient and safe operation of the battery device 100.

[0125] The sampling circuit 180 is disposed in the first tank 142 of the battery device 100 and is closely connected to the connecting terminal 132 of the battery cell 130. This design ensures that the sampling circuit 180 can directly and accurately obtain the voltage and current information of the battery cell 130 without going through a complex transmission path or conversion process.

[0126] The main function of the sampling circuit 180 is to monitor the voltage and current parameters of the battery cell 130 in real time and transmit this information to the battery management system, thereby realizing precise control and management of the battery device 100.

[0127] Meanwhile, the design of the isolation bracket 140 and the cover plate 160 also provides good protection for the sampling circuit 180, separating the thermal runaway pressure relief area of ​​the battery cell 130 from the electrical connection area, thus avoiding damage to key components such as the sampling circuit 180 by the electrolyte and flammable gas released by the battery cell 130 during thermal runaway.

[0128] Specifically, this invention places at least a portion of the connecting terminal 132 and the sampling circuit within the first tank 142. For blade batteries, this completely separates the thermal runaway pressure relief area of ​​the cell 130 from the electrical connection and sampling circuit areas. This prevents hazardous substances emitted after thermal runaway of the cell 130 from becoming intertwined with the electrical connection and sampling circuits, which could damage components or even cause high-voltage arcing.

[0129] like Figure 1 As shown, in some embodiments of this utility model, optionally, the sampling circuit 180 includes: a conductive aluminum bar 182 connected to the connecting pole 132; and a sampling circuit board 184 connected to the conductive aluminum bar 182, the sampling circuit board 184 being used to collect parameters of the battery cell 130.

[0130] In this embodiment, the sampling circuit 180 specifically includes a conductive aluminum bar 182 and a sampling circuit board 184. The conductive aluminum bar 182 is in contact with the connecting terminal 132 of the battery cell 130, serving as an electrical connection and signal transmission device.

[0131] The sampling circuit board 184 is used to collect key parameters such as voltage and current of the battery cell 130 and transmit this information to the battery management system.

[0132] The sampling circuit board 184 and the conductive aluminum bar 182 are electrically connected through soldering, plugging, or other connection methods. This connection method is not only stable and reliable, but also effectively reduces signal distortion or malfunctions caused by poor connections.

[0133] Through the coordinated operation of the conductive aluminum bar 182 and the sampling circuit board 184, real-time monitoring and acquisition of key parameters such as voltage and current of the battery cell 130 are realized.

[0134] like Figure 1 As shown, in some embodiments of the present invention, optionally, the battery cell support 110 includes: a support member 112, on which at least one battery cell 130 is disposed; and an end plate 114 disposed on the support member 112, located on both sides of the support member 112, for constraining the expansion direction of the battery cell 130.

[0135] In this embodiment, the cell support 110 includes a support member 112 and an end plate 114. The support member 112 is the main structure of the cell support 110, and its main function is to support and fix the cell 130. In the battery device 100, the cell 130 is placed on the support member 112. The stable support of the support member 112 ensures that the cell 130 can remain stable during charging and discharging, avoiding damage caused by vibration or impact.

[0136] Specifically, the support 112 is designed with positioning holes or positioning grooves to precisely fix the position of the battery cell 130.

[0137] like Figure 9 As shown, end plates 114 are disposed on both sides of the support member 112, and their main function is to constrain the expansion direction of the battery cell 130. During the charging and discharging process of the battery, the battery cell 130 will expand due to internal chemical reactions. If this expansion is not effectively constrained, it may cause the battery cell 130 to deform, crack, or even cause a safety accident. This utility model ensures the safe operation of the battery device 100 through the design of the end plates 114.

[0138] Specifically, the end plate 114 is designed with heat dissipation holes or ventilation slots to improve the heat dissipation performance of the battery device 100.

[0139] The cell support 110 effectively supports and constrains the cell 130 through the coordinated work of the support member 112 and the end plate 114. The support member 112 provides a stable support foundation for the cell 130, while the end plate 114 constrains the expansion direction of the cell 130, preventing deformation and breakage of the cell 130 due to expansion.

[0140] Specifically, the end plate 114 is made by aluminum alloy extrusion molding and has multiple channels in its cross-sectional direction, which serve to constrain the expansion direction of the battery cell 130.

[0141] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, in some embodiments of this utility model, optionally, the end plate 114 is provided with a second exhaust channel 120, which is connected to the first exhaust channel 170; the battery device 100 further includes a first pipe 192, which is connected to the side of the end plate 114 away from the battery cell 130, and the first pipe 192 is connected to the second exhaust channel 120. In this case, the explosion-proof valve 134 is opened, and the material discharged from the battery cell 130 is discharged from the battery device 100 through the first exhaust channel 170, the second exhaust channel 120 and the first pipe 192.

[0142] In this embodiment, the present invention further provides a first pipe 192 and a second exhaust pipe in the battery device 100 to discharge the material discharged from the battery cell 130 into the battery device 100.

[0143] The first exhaust passage 170 is enclosed by the cover plate 160 and the second groove 144 of the isolation bracket 140, forming a closed passage.

[0144] When the internal pressure of the battery cell 130 increases, the explosion-proof valve 134 opens, and the harmful substances inside the battery cell 130 are discharged into the first exhaust channel 170.

[0145] The second exhaust passage 120 is located on the end plate 114 and is connected to the first exhaust passage 170, and is used to further guide the harmful substances in the first exhaust passage 170 to the outside of the battery device 100.

[0146] Specifically, the second exhaust channel 120 is a hole, groove, or channel structure on the end plate 114.

[0147] The second exhaust passage 120, as an extension of the first exhaust passage 170, ensures that harmful substances can be discharged smoothly.

[0148] The first conduit 192 is connected to the side of the end plate 114 away from the battery cell 130 and is connected to the second exhaust channel 120.

[0149] The first conduit 192, as an extension of the emission path, guides harmful substances from inside the battery device 100 to the external environment, thereby achieving unified treatment of the emissions from the battery cell 130.

[0150] In related technologies, thermal runaway emissions can enter the system level without effective collection and isolation measures, causing pollution and impact on the battery device. This invention addresses this by using a first exhaust channel 170, a second exhaust channel 120, and a first pipe 192. When thermal runaway occurs in the battery cell 130, the explosion-proof valve 134 opens, releasing the emitted substances along the first exhaust channel 170 formed by the isolation bracket 140 and the cover plate 160, into the second exhaust channel 120 of the end plate 114. The second exhaust channel 120 connects to the external first pipe 192, enabling unified discharge or collection of the released substances.

[0151] This invention prevents hazardous substances emitted after thermal runaway of the battery cell 130 from becoming entangled with the connecting terminal 132, electrical connection circuit, and sampling circuit, thus avoiding damage to components or even high-voltage arcing. Simultaneously, because the first pipe 192 runs directly to the explosion-proof valve 134 along the second exhaust channel 120 and the first exhaust channel 170, it prevents leaked substances from contaminating other components in the battery device 100, thus avoiding greater economic losses and risks.

[0152] like Figure 7 As shown, in some embodiments of this utility model, optionally, the battery device 100 further includes: a one-way valve 194, which is disposed on the end plate 114 and is connected to the second exhaust channel 120 and the first pipe 192 respectively. The conduction direction of the one-way valve 194 is from the second exhaust channel 120 to the first pipe 192.

[0153] In this embodiment, the present invention controls the emission direction of the substance to avoid backflow of the substance.

[0154] The battery device 100 also includes a one-way valve 194, which is a structure of the battery device 100 used to control the flow direction of the substances discharged from the cell 130 after thermal runaway.

[0155] A one-way valve 194 is mounted on end plate 114 and connects to both the second exhaust channel 120 and the first pipe 192. The flow direction of the one-way valve 194 is from the second exhaust channel 120 to the first pipe 192. Under normal circumstances, the one-way valve 194 is closed to prevent external air or moisture from entering the battery device 100. When the internal pressure of the battery cell 130 increases, the one-way valve 194 automatically opens, allowing harmful substances in the second exhaust channel 120 to be discharged into the first pipe 192, thereby discharging them from the battery device 100. This ensures rapid response and effective discharge of the battery device 100 under abnormal conditions.

[0156] When cell 130 experiences thermal runaway, the explosion-proof valve 134 opens, and the released material enters the second exhaust channel 120 of end plate 114 through the first exhaust channel 170 formed by the isolation bracket 140 and the cover plate 160. End plate 114 is designed with a one-way exhaust valve connected to an external first pipe 192, enabling unified discharge or collection of the released material. This prevents hazardous materials released after thermal runaway from cell 130 from becoming entangled with the connecting terminal 132, electrical connection circuit, and sampling circuit, which could damage components or even cause high-voltage arcing. Simultaneously, because the first pipe 192 runs directly to the explosion-proof valve 134 along the second exhaust channel 120 and the first exhaust channel 170, it prevents the released material from contaminating other components in the battery device 100, thus avoiding greater economic losses and risks.

[0157] Specifically, when the explosion-proof valve 134 is open, the check valve 194 is also open.

[0158] Specifically, a second mounting hole 116 is provided on the cell support 110, and a one-way exhaust valve is provided in the second mounting hole 116.

[0159] Specifically, the one-way valve 194 consists of a valve body, a valve core, and a spring. The valve body is the main part of the one-way valve 194, and it is designed with a flow channel to guide the flow direction of the substance. The valve core is the key component of the one-way valve 194, located inside the valve body. The valve core can move according to the flow direction of the substance, thereby controlling the flow of the substance. The spring is connected to the valve core and assists in the opening and closing action of the valve core. When the substance flows in from an unauthorized direction, the spring applies a certain elastic force to help the valve core close tightly, ensuring that the substance does not flow backward.

[0160] Specifically, the working principle of the one-way valve 194 is based on the interaction between the flow pressure of the substance and the elastic force of the spring. When the substance flows from the second exhaust channel 120 to the first pipe 192, the flow pressure of the substance will overcome the elastic force of the spring and push the valve core to open, allowing the substance to pass smoothly. When the fluid flows from the first pipe 192 to the second exhaust channel 120, the elastic force of the spring will prevent the valve core from opening, and the fluid will be blocked outside the valve body, thereby realizing the control of one-way flow.

[0161] like Figure 10 As shown, in some embodiments of the present invention, the battery device 100 may optionally include a second sealing member 196, which is connected to the first exhaust channel 170 and the second exhaust channel 120 respectively, for sealing the gap between the first exhaust channel 170 and the second exhaust channel 120.

[0162] In this embodiment, a sealing component is also provided for the exhaust section. The battery device 100 further includes a second sealing element 196, which is connected to the first exhaust channel 170 and the second exhaust channel 120 respectively, and is used to seal the gap between the first exhaust channel 170 and the second exhaust channel 120. The second sealing element 196 is a structure in the battery device 100 used to seal the gap between the exhaust channels, preventing harmful substances from leaking into other parts of the battery device 100 or the external environment during the emission process. It also prevents dangerous substances emitted after thermal runaway of the battery cell 130 from intertwining with the electrical connection circuit and sampling circuit, damaging components or even causing high-voltage arcing. At the same time, since the independent exhaust pipe leads directly to the explosion-proof valve 134 of the battery cell 130, it avoids the release of substances from contaminating other components in the battery system, causing greater economic losses and risks, and improves the sealing performance and safety of the battery device 100.

[0163] Specifically, the second seal 196 is typically made of an elastic material, such as rubber, silicone, or polyurethane.

[0164] Specifically, the second seal 196 is a sealing part.

[0165] Specifically, such as Figure 10As shown, the isolation bracket 140 is provided with an exhaust hole 152, which is connected to the first exhaust channel 170. The exhaust hole 152 extends into the end plate 114 and is connected to the second exhaust channel 120. The first exhaust channel 170 and the second exhaust channel 120 are connected through the exhaust hole 152.

[0166] Specifically, the second seal 196 is disposed on the periphery of the vent 152 to seal the connection gap.

[0167] like Figure 1 As shown, in some embodiments of this utility model, optionally, the battery device 100 further includes: a liquid cooling plate 198 disposed on the cell support 110; and a thermally conductive structural adhesive 199, one side of which is connected to the liquid cooling plate 198 and the other side of which is connected to the cell 130 for heat exchange.

[0168] In this embodiment, the battery device 100 further includes a liquid cooling plate 198 and a thermally conductive structural adhesive 199, which are structures in the battery device 100 used for temperature regulation.

[0169] A liquid cooling plate 198 is disposed on the cell support 110, and a low-temperature coolant or a high-temperature liquid can circulate within the liquid cooling plate 198. One side of the thermally conductive structural adhesive 199 is connected to the liquid cooling plate 198, and the other side is connected to the cell 130, for heat exchange. The main function of the thermally conductive structural adhesive 199 is to transfer the heat generated by the cell 130 to the liquid cooling plate 198. When the temperature of the cell 130 is high, the heat is carried away by the low-temperature coolant; when the temperature of the cell 130 is low, the temperature of the cell 130 is increased by the high-temperature liquid.

[0170] Specifically, the liquid cooling plate 198 and the thermally conductive structural adhesive 199 are disposed on the top of the battery cell 130.

[0171] Specifically, the liquid cooling plate 198 is a flat plate or pipe structure made of metal or alloy. The liquid cooling plate 198 contains liquid channels for circulating low-temperature coolant to remove the heat generated by the battery cell 130. It can also circulate high-temperature liquid to raise the temperature of the battery cell 130 when the temperature of the battery cell 130 is low.

[0172] Specifically, thermally conductive structural adhesive 199 is an adhesive with high thermal conductivity, typically composed of a polymer matrix and thermally conductive fillers.

[0173] Specifically, the thermally conductive structural adhesive 199 is in sheet form to accommodate the contact surface between the battery cell 130 and the liquid cooling plate 198.

[0174] The main function of the thermally conductive structural adhesive 199 is to transfer the heat generated by the battery cell 130 to the liquid cooling plate 198. The thermally conductive structural adhesive 199 has good adhesion and thermal conductivity, which can ensure close contact and efficient heat transfer between the battery cell 130 and the liquid cooling plate 198.

[0175] Specifically, the cell support 110 is provided with a third mounting hole 118, wherein the rivet passes through the liquid cooling plate 198 and then through the second mounting hole 116 to realize the installation of the liquid cooling plate 198 and the thermally conductive structural adhesive 199.

[0176] like Figure 11 As shown, in one embodiment of the present invention, an energy storage device 10 is provided, which includes at least one battery device 100 as described in any of the above embodiments.

[0177] In this embodiment, the energy storage device 10 proposed by the present invention includes at least one battery device 100 as in any of the above embodiments, and therefore has all the beneficial effects of the battery device 100, which will not be elaborated here.

[0178] For example, the energy storage device 10 may include a battery device 100.

[0179] For example, the energy storage device 10 may also include two battery devices 100, which are stacked, i.e., one battery device 100 is disposed below and the other battery device 100 is disposed above the first battery device 100.

[0180] For example, the energy storage device 10 may also include three, four, five or more battery devices 100, which are stacked and one battery device 100 is located on top of another battery device 100.

[0181] Specifically, the energy storage device 10 includes a housing, and the battery devices 100 are disposed in the housing. The cell support 110 of the energy storage device 10 is connected to the housing. There are four battery devices 100, which are stacked in the housing through the cell support 110, and there is a gap between adjacent battery devices 100.

[0182] The stacked arrangement allows more battery devices 100 to be accommodated in the limited space of the housing, thereby increasing the overall energy density and enabling the energy storage device 10 to store more electrical energy.

[0183] The gap design helps dissipate heat, preventing the battery device 100 from overheating and causing performance degradation or safety issues. Furthermore, the stacked arrangement with gaps allows for easy addition or replacement of the battery device 100 when needed.

[0184] Specifically, the energy storage device 10 can be a battery system, a household stacked battery system, or a mobile battery system.

[0185] like Figure 11 As shown, in some embodiments of this utility model, optionally, the energy storage device 10 further includes: a second pipe 200 connected to the first exhaust channel 170, wherein the material discharged from the battery cell 130 is discharged into the second pipe 200 through the first exhaust channel 170 and then discharged from the energy storage device 10.

[0186] In this embodiment, the energy storage device 10 further includes a second pipe 200, which is connected to the first exhaust channel 170. The second pipe 200 is the main exhaust pipe of the energy storage device 10. The material discharged by the battery cell 130 is discharged into the second pipe 200 through the first exhaust channel 170 and then discharged from the energy storage device 10.

[0187] In related technologies, thermal runaway emissions enter the system level without effective collection and isolation measures, causing pollution and impact on other battery devices or electrical components and equipment in the energy storage device. This invention utilizes a dedicated second pipe 200 to effectively discharge substances emitted by the battery cell 130 during thermal runaway into the energy storage device 10. The unified emission and collection processing structure simplifies the subsequent treatment of the emissions from the battery cell 130.

[0188] Specifically, the energy storage device 10 includes four battery devices 100. The first pipe 192 of the four battery devices 100 is connected to the second pipe 200 respectively, so that the substances discharged by the cells 130 of the multiple battery devices 100 during thermal runaway can be collected and processed in a unified manner.

[0189] Specifically, one end of the second pipe 200 is connected to the first pipe 192 of the battery device 100, and the other end of the second pipe 200 is connected to the second exhaust channel 120 provided on the end plate 114 of the cell support 110. The second exhaust channel 120 is connected to the first exhaust channel 170 to form a complete exhaust pipe system.

[0190] Specifically, the energy storage device 10 is a battery system.

[0191] In the battery system, each battery device is connected to the second pipe 200, and the first pipe 192 of each battery device converges to the second pipe 200. The module is designed and installed with a one-way vent valve, which serves two purposes: first, to connect the first pipe 192 and the second vent channel 120; and second, to prevent the leakage material from the battery system where thermal runaway occurred from entering other normal battery devices 100 by utilizing the one-way opening feature.

[0192] Specifically, the battery device 100 proposed in this utility model is for a blade battery. The battery cell 130 has connecting posts 132 and explosion-proof valves 134 on both sides. When stacked in groups, the explosion-proof valves 134 are designed to be in the top area of ​​the battery cell 130. The battery cells 130 are grouped in the battery cell support 110 in sequence. The positive and negative posts of the battery cell 130 are connected in series using conductive aluminum bars 182. The pins of the sampling circuit board 184 are soldered and fixed on the conductive aluminum bars 182 to realize the acquisition of voltage and temperature signals of the battery cell 130.

[0193] The top of the battery device is a liquid cooling plate 198, which contacts the battery cell 130 via thermally conductive structural adhesive 199. It is responsible for heat exchange with the thermoelectric generator. When the temperature of the battery cell 130 is high, heat is carried away by the low-temperature coolant; when the temperature of the battery cell 130 is low, the temperature is raised by the high-temperature liquid. The liquid cooling plate 198 is fixedly connected to the battery cell bracket 110 using rivets passing through the third mounting holes 118 designed on the end plates 114 on both sides.

[0194] The cell support 110 is divided into two parts. One part is the bottom support structure, which mainly supports the weight of the cell 130 and the module. The other part is the end plate 114, which is made of aluminum alloy by extrusion molding. It has multiple channels in its cross-section, which constrain the expansion direction of the cell 130, connect and fix the bottom support structure and the liquid cooling plate 198. In addition, the end plate 114 also integrates some exhaust channels, connecting the isolation bracket 140 and the first pipe 192. The end plate 114 has a second exhaust channel 120, a second mounting hole 116 and a third mounting hole 118.

[0195] The isolation bracket 140 is installed on the side of the connecting bracket and the battery cell 130, dividing it into two areas. The upper part is the venting channel for thermal runaway of the battery cell 130, which, together with the cover plate 160 and the ceramic silicone cloth, forms an independent channel corresponding to the explosion-proof valve 134 of the battery cell 130. The lower part is the electrical connection isolation groove, which isolates and protects the conductive aluminum bar 182 and the sampling circuit board 184.

[0196] The isolation bracket 140 is designed with a first exhaust channel 170, and an explosion-proof valve 134 clearance hole (i.e. the second through hole 150 mentioned above) is designed for the explosion-proof valve 134 area of ​​each battery cell 130. The clearance hole area is larger than the explosion-proof valve 134 area of ​​a single battery cell 130, and the height of the exhaust channel is greater than or equal to 8mm, so as to avoid the explosion-proof valve 134 of the battery cell 130 not opening smoothly and affecting the discharge effect.

[0197] The cover plate 160 and the isolation bracket 140 are designed with a snap-fit ​​structure on one side and fasteners rivets on the other side that pass through the first mounting hole 154 on the isolation bracket 140 to fix the two plates together. Ceramic silicone cloth is used to fill the gap between the cover plate 160 and the isolation bracket 140 to prevent the thermal runaway emission material from the battery cell 130 from leaking out between them. The isolation bracket 140 is designed with a vent hole 152. After installation, the vent hole 152 extends into the second vent channel 120 of the end plate 114 and fills the gap between them with a sealing part. The electrical connection isolation groove (i.e., the first groove 142 mentioned above) is the area for accommodating the conductive aluminum bar 182 and the sampling circuit board 184, separating the electrical connection area from the thermal runaway emission material. During installation, the connecting post 132 of the battery cell 130 passes through the post clearance hole (i.e., the first through hole 148) of the battery cell 130.

[0198] Regarding the explosion-proof valve 134 structure of the battery cell 130 with side pressure relief in the blade battery, this utility model completely separates the thermal runaway pressure relief area of ​​the battery cell 130 from the electrical connection and sampling circuit areas. The isolation bracket 140 is designed with an independent vent for each battery cell 130. When a battery cell 130 experiences thermal runaway, the explosion-proof valve 134 of the battery cell 130 opens, releasing substances that enter the venting channel of the end plate 114 along the venting channel formed by the isolation bracket 140 and the protective cover (i.e., the cover plate 160 mentioned above). The end plate 114 is designed with a one-way venting valve connected to an external venting pipe (i.e., the first pipe 192 mentioned above). The released substances are uniformly discharged or collected by the second pipe 200 of the battery system. This prevents dangerous substances released after thermal runaway from the battery cell 130 from intertwining with the electrical connection circuit and sampling circuit, damaging components, or even causing high-voltage arcing. Meanwhile, since the independent exhaust pipe runs directly from the exhaust channel inside the end plate 114 to the explosion-proof valve 134 of the cell 130, it avoids the release of substances that could contaminate other components in the battery system and cause greater economic losses and risks.

[0199] In the claims, description, and accompanying drawings of this utility model, the term "plural" refers to two or more objects. Unless otherwise explicitly defined, the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description process, and are not intended to indicate or imply that the device or element referred to must have the described specific orientation, or be constructed and operated in a specific orientation. Therefore, these descriptions should not be construed as limitations on this utility model. The terms "connect," "install," "fix," etc., should be interpreted broadly. For example, "connect" can be a fixed connection between multiple objects, a detachable connection between multiple objects, or an integral connection; it can be a direct connection between multiple objects or an indirect connection between multiple objects through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood based on the specific circumstances described above.

[0200] In the claims, description, and drawings of this utility model, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. In the claims, description, and drawings of this utility model, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0201] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A battery device, characterized in that, include: Battery cell support; At least one battery cell is disposed on the battery cell support; An isolation bracket is disposed on the cell bracket. The isolation bracket has a first groove, a second groove, and an isolation portion. The isolation portion is located between the first groove and the second groove to isolate the first groove from the second groove. A cover plate is disposed on the isolation bracket, and the cover plate covers the second tank to form a first exhaust channel with the second tank; The battery cell is provided with a connecting terminal and an explosion-proof valve. At least a portion of the connecting terminal is located in the first tank, and at least a portion of the explosion-proof valve is located in the first exhaust channel. When the explosion-proof valve is open, the substance discharged from the battery cell is discharged into the first exhaust channel.

2. The battery device according to claim 1, characterized in that, The isolation bracket also has a first through hole, which communicates with the first groove, and the connecting pole passes through the first through hole.

3. The battery device according to claim 2, characterized in that, The number of battery cells is multiple, and the multiple battery cells are arranged along the length direction of the battery cell bracket; There are multiple first through holes, and one of the connecting poles passes through one of the first through holes.

4. The battery device according to claim 1, characterized in that, The isolation bracket also has a second through hole, which communicates with the second groove, and the explosion-proof valve passes through the second through hole.

5. The battery device according to claim 4, characterized in that, The number of battery cells is multiple, and the multiple battery cells are arranged along the length direction of the battery cell bracket; There are multiple second through holes, with one explosion-proof valve passing through one second through hole.

6. The battery device according to any one of claims 1 to 5, characterized in that, One end of the isolation section is connected to the first tank, and the other end of the isolation section is connected to the second tank.

7. The battery device according to any one of claims 1 to 5, characterized in that, The battery device also includes: A first sealing element is disposed on one side of the isolation bracket and located between the isolation bracket and the cover plate, for sealing the gap between the isolation bracket and the cover plate.

8. The battery device according to any one of claims 1 to 5, characterized in that, Along the width direction of the isolation bracket, the minimum distance between the end face of the cover plate that covers the second groove and the side of the isolation bracket near the battery cell is greater than or equal to 8 mm.

9. The battery device according to any one of claims 1 to 5, characterized in that, The battery device also includes: A sampling circuit is connected to the connecting terminal and is located in the first slot.

10. The battery device according to claim 9, characterized in that, The sampling circuit includes: A conductive aluminum bar is connected to the connecting electrode post; A sampling circuit board is connected to the conductive aluminum bar, and the sampling circuit board is used to collect the parameters of the battery cell.

11. The battery device according to any one of claims 1 to 5, characterized in that, The cell support includes: A support member, wherein at least one of the battery cells is disposed on the support member; End plates, disposed on the support member and located on both sides of the support member, are used to constrain the expansion direction of the battery cell.

12. The battery device according to claim 11, characterized in that, The end plate is provided with a second exhaust channel, which is connected to the first exhaust channel. The battery device also includes: A first pipe is connected to the side of the end plate opposite to the battery cell. The first pipe is connected to a second exhaust channel. When the explosion-proof valve is open, the material discharged from the battery cell is discharged from the battery device through the first exhaust channel, the second exhaust channel and the first pipe.

13. The battery device according to claim 12, characterized in that, The battery device also includes: A one-way valve is disposed on the end plate and is connected to the second exhaust channel and the first pipe respectively. The conduction direction of the one-way valve is from the second exhaust channel to the first pipe.

14. The battery device according to claim 12, characterized in that, The battery device also includes: The second seal is connected to the first exhaust channel and the second exhaust channel respectively, and is used to seal the gap between the first exhaust channel and the second exhaust channel.

15. The battery device according to any one of claims 1 to 5, characterized in that, The battery device also includes: A liquid cooling plate is disposed on the battery cell support; A thermally conductive structural adhesive is provided, with one side connected to the liquid cooling plate and the other side connected to the battery cell, for heat exchange.

16. An energy storage device, characterized in that, The energy storage device includes: At least one battery device as claimed in any one of claims 1 to 15.

17. The energy storage device according to claim 16, characterized in that, The energy storage device also includes: The second pipe is connected to the first exhaust channel. The material discharged from the battery cell is discharged into the second pipe through the first exhaust channel and then discharged from the energy storage device.

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