Integrated board for battery module, battery module, energy storage device, and electric system

Abstract

An integrated board for a battery module, a battery module, an energy storage device, and an electric system. The integrated board for a battery module comprises a mounting panel (100), a flow guide member (200), and an electrical connection assembly (300). The mounting panel (100) has a first surface (110) and a second surface (120) opposite to each other. The first surface (110) is provided with a mounting groove (111), and the mounting groove (111) extends in a first direction. The flow guide member (200) is arranged on the second surface (120) and is provided with an accommodating groove and a flow guide hole (220), the inner surface of the accommodating groove cooperates with the second surface (120) to form a flow guide cavity (230), the flow guide cavity (230) extends in the first direction, and the flow guide hole (220) is communicated with the flow guide cavity (230). The electrical connection assembly (300) comprises a busbar (311), the busbar (311) is arranged in the mounting groove (111), and the projection of the busbar (311) in the direction from the first surface (110) to the second surface (120) is staggered from the projection of the flow guide cavity (230) in the direction from the first surface (110) to the second surface (120). Compared with the traditional technology, the integrated board separates the busbar from a high-temperature medium while leading out the high-temperature medium, so that the safety of the integrated board during use is improved.

Description

Integrated boards for battery modules, battery modules, energy storage devices and power systems

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on November 2, 2023, with application number 202311447540.X and application name “Integrated board, battery module, energy storage device and power system for battery module”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of energy storage technology, and in particular to an integrated board for a battery module, a battery module, an energy storage device, and an electricity system. Background Art

[0003] As the demand for battery modules continues to increase, people have higher and higher requirements for the safety performance of battery modules.

[0004] In traditional technology, when a battery module experiences thermal runaway, an isolation plate is usually installed on the battery cover to prevent the battery cover from being broken through by the high-temperature medium generated by the thermal runaway. However, due to the obstruction of the isolation plate, the high-temperature medium will flow back and impact the components on the isolation plate. The components on the isolation plate will malfunction under the impact of the high-temperature medium, causing fire and explosion, affecting the safe use of the battery module.

[0005] Summary of the Invention

[0006] Based on this, it is necessary to provide an integrated board for a battery module, a battery module, an energy storage device and a power system to address the problem of low safety performance of the battery module.

[0007] The technical solution is as follows:

[0008] One embodiment provides an integrated board for a battery module, comprising:

[0009] A mounting plate having a first surface and a second surface opposite to each other, a direction parallel to the first surface being a first direction, a mounting groove being provided on the first surface, and the mounting groove extending along the first direction;

[0010] a flow guide member, the flow guide member being provided on the second surface and having a receiving groove and a drainage hole, the inner surface of the receiving groove cooperating with the second surface to form a drainage cavity, the drainage cavity extending along the first direction, the drainage hole being in communication with the drainage cavity; and

[0011] An electrical connection component includes a bus, which is arranged in the installation groove, and the projection of the bus along the first surface toward the second surface is staggered with the projection of the drainage cavity along the first surface toward the second surface.

[0012] In the above-mentioned integrated board for battery modules, high-temperature medium can enter the drainage cavity from the drainage hole of the guide member provided on the second surface, thereby preventing the high-temperature medium from causing impact damage to the bus arranged in the mounting groove of the first surface. The projection of the bus along the first surface toward the second surface and the projection of the drainage cavity along the first surface toward the second surface are staggered, which can stagger the bus and the high-temperature medium in the drainage cavity in the thickness direction of the mounting plate, thereby preventing the bus from overheating under the influence of the high-temperature medium and causing short circuit or explosion. Compared with traditional technology, the above-mentioned integrated board for battery modules can separate the bus from the high-temperature medium while diverting the high-temperature medium, thereby improving the safety of the integrated board during use.

[0013] Another embodiment provides a battery module, comprising the integrated board for a battery module and a battery cell as described in any of the above embodiments, wherein the second surface is arranged toward the battery cell, and the busbar is used for electrical connection with the battery cell.

[0014] The above-mentioned battery module includes an integrated board for battery modules as described in any of the above-mentioned embodiments. The high-temperature medium can enter the drainage cavity from the drainage hole of the guide member provided on the second surface, preventing the high-temperature medium from causing impact damage to the bus provided in the mounting groove of the first surface. The projection of the bus along the first surface toward the second surface and the projection of the drainage cavity along the first surface toward the second surface are staggered, which can stagger the bus and the high-temperature medium in the drainage cavity in the thickness direction of the mounting plate, preventing the bus from overheating under the influence of the high-temperature medium and causing short circuit or explosion. Compared with traditional technology, the above-mentioned integrated board for battery modules can separate the bus from the high-temperature medium while diverting the high-temperature medium, thereby improving the safety of the integrated board during use.

[0015] In addition, the present application also provides an energy storage device, including the battery module described above.

[0016] The above-mentioned energy storage device includes the battery module as described above. The high-temperature medium can enter the drainage cavity from the drainage hole of the guide member provided on the second surface, thereby preventing the high-temperature medium from causing impact damage to the bus provided in the mounting groove of the first surface. The projection of the bus along the first surface toward the second surface and the projection of the drainage cavity along the first surface toward the second surface are staggered, which can stagger the bus and the high-temperature medium in the drainage cavity in the thickness direction of the mounting plate, thereby preventing the bus from overheating under the influence of the high-temperature medium and causing a short circuit or explosion. Compared with traditional technologies, the above-mentioned integrated board for battery modules can separate the bus from the high-temperature medium while diverting the high-temperature medium, thereby improving the safety of the integrated board during use.

[0017] Finally, the present application also provides an electricity consumption system, comprising the energy storage device as described above and an electricity-consuming entity, wherein the electricity-consuming entity is electrically connected to the energy storage device.

[0018] The above-mentioned power system includes the energy storage device and the power-consuming body as described above. The power-consuming body is electrically connected to the energy storage device. The high-temperature medium can enter the drainage cavity from the drainage hole of the guide member provided on the second surface, preventing the high-temperature medium from causing impact damage to the bus provided in the mounting groove of the first surface. The projection of the bus along the first surface toward the second surface and the projection of the drainage cavity along the first surface toward the second surface are staggered, which can stagger the bus and the high-temperature medium in the drainage cavity in the thickness direction of the mounting plate, preventing the bus from overheating under the influence of the high-temperature medium and causing short circuit or explosion. Compared with traditional technology, the above-mentioned integrated board for battery modules can separate the bus from the high-temperature medium while diverting the high-temperature medium, thereby improving the safety of the integrated board during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0020] FIG1 is an exploded schematic diagram of a battery module in one embodiment of the present application.

[0021] FIG2 is a schematic structural diagram of the second surface of the mounting plate in one embodiment of the present application.

[0022] FIG3 is a schematic structural diagram of the first surface of the mounting plate in one embodiment of the present application.

[0023] FIG4 is a partial enlarged view of point A in FIG3 .

[0024] FIG5 is a partial schematic diagram of the BB section in FIG3 .

[0025] FIG6 is a schematic structural diagram of an energy storage device in an embodiment of the present application.

[0026] Description of the accompanying drawings:

[0027] 100. Mounting plate; 110. First surface; 111. Mounting groove; 120. Second surface; 130. Connecting through-hole unit; 131. Connecting through-hole; 200. Guide member; 210. Blocking piece; 211. First connecting portion; 212. Second connecting portion; 220. Drainage hole; 230. Drainage cavity; 240. Drain port; 300. Electrical connection assembly; 310. Bus unit; 311. Bus; 320. Information collection member; 330. Connector; 400. Battery cell; 500. Cell holder. DETAILED DESCRIPTION

[0028] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0029] In the description of this application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0030] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, if the term "plurality" appears, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0031] In this application, unless otherwise specified or limited, the terms "mounted," "connected," "connected," "fixed," etc., should be interpreted broadly. For example, these terms may refer to fixed connections, removable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; and internal communication between two components or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0032] In this application, unless otherwise expressly specified or limited, if a first feature is described as being "above" or "below" a second feature, or similar descriptions, this may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is described as being "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is described as being "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0033] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only embodiment.

[0034] Referring to Figures 1 to 3, an embodiment of the present application provides an integrated board for a battery module, including a mounting plate 100, a guide member 200 and an electrical connection assembly 300. The mounting plate 100 has a first surface 110 and a second surface 120 relative to each other. The first surface 110 is provided with a mounting groove 111, and the direction parallel to the first surface 110 is set as the first direction. The mounting groove 111 extends along the first direction; the guide member 200 is provided on the second surface 120 and has a receiving groove and a drainage hole 220. The inner surface of the receiving groove cooperates with the second surface 120 to form a drainage cavity 230. The drainage cavity 230 extends along the first direction, and the drainage hole 220 is connected to the drainage cavity 230; the electrical connection assembly 300 includes a bus 311, the bus 311 is provided in the mounting groove 111, and the projection of the bus 311 along the first surface 110 toward the second surface 120 is staggered with the projection of the drainage cavity 230 along the first surface 110 toward the second surface 120.

[0035] In the above-mentioned integrated board for battery modules, high-temperature medium can enter the drainage cavity 230 from the drainage hole 220 of the guide member 200 provided on the second surface 120, preventing the high-temperature medium from causing impact damage to the bus 311 provided in the mounting groove 111 of the first surface 110. The projection of the bus 311 along the first surface 110 toward the second surface 120 and the projection of the drainage cavity 230 along the first surface 110 toward the second surface 120 are staggered, which can stagger the bus 311 and the high-temperature medium in the drainage cavity 230 in the thickness direction of the mounting plate 100, preventing the bus 311 from overheating under the influence of the high-temperature medium and causing a short circuit or explosion. Compared with traditional technologies, the above-mentioned integrated board for battery modules can separate the bus 311 from the high-temperature medium while diverting the high-temperature medium, thereby improving the safety of the integrated board during use.

[0036] Furthermore, by providing the mounting groove 111 to accommodate the bus 311, the integrated board can be prevented from protruding from the mounting plate 100 and affecting the arrangement of other components when the integrated board is assembled with other components into an energy storage device, thereby improving the space utilization inside the energy storage device.

[0037] Furthermore, the mounting plate 100 and the mounting groove 111 on the mounting plate 100 are integrally die-cast, which not only saves materials and reduces costs but also improves production efficiency.

[0038] For explanation, by arranging the bus 311 on the first surface 110 of the mounting plate 100 and arranging the guide member 200 on the second surface 120 of the mounting plate 100, the bus 311 is isolated from the high-temperature medium flowing in the guide member 200 through the mounting plate 100, thereby preventing the high-temperature medium from causing thermal shock to the bus 311 and causing an explosion.

[0039] Optionally, the busbar 311 and the first surface 110 may be connected by bonding or riveting, which is not specifically limited here.

[0040] Please refer to Figures 3 to 5. In one embodiment, the guide member 200 includes a baffle 210, a first connecting portion 211 and a second connecting portion 212. The baffle 210 extends along the first direction. The first connecting portion 211 and the second connecting portion 212 are respectively connected to the two sides of the baffle 210 in a one-to-one correspondence. The first connecting portion 211 and the second connecting portion 212 are both provided on the second surface 120. The second surface 120, the first connecting portion 211, the baffle 210 and the second connecting portion 212 are surrounded to form a drainage cavity 230.

[0041] The first connection portion 211 and the second connection portion 212 are respectively connected to the two sides of the baffle 210 in a one-to-one manner to form a receiving groove. The first connection portion 211 and the second connection portion 212 are both connected to the second surface 120. In this way, the second surface 120, the first connection portion 211, the baffle 210 and the second connection portion 212 are surrounded to form a drainage cavity 230. The drainage cavity 230 can accommodate and drain the high-temperature medium to prevent the high-temperature medium from impacting the battery cell 400 and the electrical connection assembly 300.

[0042] In one embodiment, the first connection portion 211 and the second connection portion 212 are both connected to the second surface 120 by bonding.

[0043] In another embodiment, both sides of the baffle 210 are bent to form a first bent portion and a second bent portion. One side of the baffle 210 is connected to the second surface 120 via the first bent portion, and the other side of the baffle 210 is connected to the second surface 120 via the second bent portion. Thus, the second surface 120, the first bent portion, the baffle 210, and the second bent portion enclose a drainage cavity 230. In this embodiment, the baffle 210 is manufactured using an integrated die-casting process, thereby saving materials, reducing costs, and improving production efficiency.

[0044] Referring to FIG. 3 , in one embodiment, the first connection portion 211 , the second surface 120 , the second connection portion 212 , and at least one end of the blocking piece 210 are surrounded to form a drainage port 240 , which is communicated with the drainage cavity 230 .

[0045] At least one end of the baffle 210 is surrounded by the first connecting portion 211, the second surface 120, and the second connecting portion 212 to form a drain port 240. The drain port 240 is connected to the drainage cavity 230 to discharge the high-temperature medium in the drainage cavity 230 to the outside. By providing the drain port 240, the high-temperature medium can be discharged to the outside through the drainage hole 220, the drainage cavity 230, and the drain port 240 respectively, thereby preventing the high-temperature medium from impacting the battery cell 400 and the electrical connection assembly 300.

[0046] Please refer to Figure 3. In a preferred embodiment of the present application, the integrated board serves as a wiring harness isolation plate in the battery module. The first direction is the length direction of the mounting plate 100 (i.e., the extension direction of the relatively longer side of the mounting plate 100). The baffle 210 extends along the first direction to the outside of the battery cell holder 500 of the battery module, and both ends of the baffle 210 are surrounded by the first connecting portion 211, the second surface 120, and the second connecting portion 212 to form two drainage ports 240. Such an arrangement not only enables the drainage effect generated by the drainage cavity 230 and the drainage hole 220 to act on a larger area within the battery cell holder 500, that is, when a battery cell 400 at any position in the battery cell holder 500 experiences thermal runaway, the high-temperature medium can enter the drainage cavity 230 through the adjacent drainage hole 220 in time and be discharged through the drainage port 240. In addition, the high-temperature medium can be discharged simultaneously through the two drainage ports 240, thereby increasing the maximum flow rate of the high-temperature medium that can be discharged simultaneously, thereby improving safety.

[0047] For explanation, the drain port 240 can be connected to the external environment to discharge the high-temperature medium to the external environment; the drain port 240 can also be connected to the internal circuit of the energy storage device to discharge the high-temperature medium to the high-temperature medium collection mechanism in the energy storage device.

[0048] Referring to FIG. 3 , in one embodiment, at least two drainage holes 220 are provided on the blocking piece 210 , and all drainage holes 220 are spaced apart along the first direction.

[0049] Such a configuration can make the drainage effect of the drainage hole 220 act on a larger area, and the high-temperature medium can enter the drainage cavity 230 through the adjacent drainage hole 220 in a timely manner and be discharged through the discharge port 240, thereby improving safety; in addition, by providing at least two drainage holes 220, the maximum flow rate of the high-temperature medium discharged simultaneously by the guide member 200 can also be increased, further improving safety.

[0050] Referring to Figures 1 and 2, in one embodiment, the busbar 311 has a positive connection end and a negative connection end, and the bottom wall of the mounting groove 111 is provided with at least two connection through-holes 131. The two connection through-holes 131 form a connection through-hole unit 130. One of the connection through-holes 131 in a connection through-hole unit 130 is provided corresponding to the positive connection end, and the other connection through-hole 131 is provided corresponding to the negative connection end.

[0051] Among two adjacent battery cells 400, the positive electrode post of one battery cell 400 is passed through one of the connecting through holes 131 in a connecting through hole unit 130, thereby being connected to the positive connection end of the bus 311, and the negative electrode post of the other battery cell 400 is passed through another connecting through hole 131 in a connecting through hole unit 130, thereby being connected to the negative connection end of the bus 311, thereby realizing the series connection of the two adjacent battery cells 400; such an arrangement can not only realize the electrical connection between the battery cell 400 located on the second surface 120 and the bus 311 provided on the first surface 110, preventing the battery cell 400 from thermal runaway and generating high-temperature medium to cause impact and short circuit on the bus 311, but also can produce a certain fixing effect on the battery cell 400, preventing the battery cell 400 from shaking or dislocating.

[0052] Furthermore, the size of the connecting through hole 131 matches the size of the pole of the battery cell 400, thereby preventing the high-temperature medium from flowing out from the gap between the pole and the connecting through hole 131 and causing impact on the busbar 311, and also preventing the battery cell 400 from shaking or dislocating.

[0053] Furthermore, in one embodiment, when the pole of the battery cell 400 passes through the connection through-hole 131 and contacts the busbar 311 , the pole and the busbar 311 are electrically connected by welding.

[0054] Please refer to Figure 2. In one embodiment, a direction perpendicular to the first direction and parallel to the first surface 110 is set as the second direction. At least two mounting grooves 111 are provided and are spaced apart along the second direction. An installation area is formed between two adjacent mounting grooves 111. The electrical connection assembly 300 also includes an information collection component 320 and a connecting component 330. The information collection component 320 is provided in the installation area, and the information collection component 320 is electrically connected to the bus 311 through the connecting component 330.

[0055] The information acquisition component 320 is arranged in the installation area formed between the two installation grooves 111. In this way, when the information acquisition component 320 is electrically connected to the bus 311 located in the installation groove 111 through the connecting member 330, the height of the information acquisition component 320 and the height of the bus 311 can be kept roughly the same. When the integrated board is assembled with other components to form an energy storage device, the information acquisition component 320 and the bus 311 can be prevented from affecting the arrangement of other components, thereby improving the space utilization inside the energy storage device; in addition, the information acquisition component 320 is arranged on the first surface 110. When the battery cell 400 suffers from thermal runaway, the high-temperature medium generated by the battery cell 400 will not impact the information acquisition component 320 due to the isolation effect of the installation plate 100, thereby ensuring the normal operation of the information acquisition component 320 and preventing the information acquisition component 320 from being damaged and causing an explosion.

[0056] Furthermore, the information collection component 320 can collect the voltage information and temperature information generated by the battery cell 400, and transmit the collected voltage information and temperature information to the control unit. When the control unit determines that the temperature is too high, it will control the cooling system to cool the battery cell 400. If the temperature is too low, it can also be transmitted to the heating device to heat the battery cell 400. The voltage information is used to determine whether the voltage value of the battery cell 400 is too low or too high, thereby controlling the working state of the battery cell 400 and ensuring the safety of the battery module.

[0057] Furthermore, in one embodiment, the connector 330 includes a nickel sheet, one end of which is overlapped on the bus 311 , and the other end of which is overlapped on the information acquisition component 320 , thereby achieving electrical connection between the bus 311 and the information acquisition component 320 .

[0058] Referring to FIG. 2 , in one embodiment, at least two busbars 311 are provided. The two busbars 311 form a busbar unit 310 . The two busbars 311 in a busbar unit 310 are respectively disposed in two adjacent mounting slots 111 .

[0059] Since the positive electrode column and the negative electrode column of the battery cell 400 are respectively arranged at the two ends of the battery cell 400, the two busbars 311 in the same busbar unit 310 are respectively arranged in two adjacent mounting grooves 111. When the battery cell 400 is arranged, one end of the battery cell 400 is electrically connected to the positive electrode connection end of one of the busbars 311, and the other end of the battery cell 400 is electrically connected to the negative electrode connection end of the other busbar 311. The battery cell 400 adjacent to the above battery cell 400 is also electrically connected to the busbar unit 310 through the above connection method, so that all the battery cells 400 are horizontally connected. Placement (that is, the direction of one end of the battery cell 400 toward the other end of the battery cell 400 is the second direction, and all the battery cells 400 are arranged at intervals along the first direction), thereby improving the space utilization of the battery module; in addition, the information acquisition component 320 is located between the two buses 311 in the same bus unit 310, so that the information acquisition component 320 can be more conveniently electrically connected to the two buses 311 in the same bus unit 310, thereby collecting status information of the battery cell 400, and can also effectively utilize the installation space on the installation plate 100, thereby improving the space utilization of the installation plate 100.

[0060] For example, the information collection component 320 in this embodiment is an FPC (Flexible Printed Circuit), which extends along the first direction. The FPC is electrically connected to a plurality of bus bars 311 spaced apart along the first direction, thereby collecting information from a plurality of battery cells 400 spaced apart along the first direction.

[0061] Referring to FIG. 2 , in one embodiment, at least two busbar units 310 are provided and spaced apart along the first direction.

[0062] At least two busbar units 310 are provided to realize series connection between the plurality of battery cells 400 .

[0063] For explanation, please refer to FIG2 . In one embodiment, two busbars 311 in a busbar unit 310 are provided, namely a first busbar 311 and a second busbar 311 . The positive electrode connection end of the first busbar 311 is used to connect the positive electrode of the first battery cell 400, the negative electrode connection end of the first busbar 311 is used to connect the negative electrode of the second battery cell 400, the positive electrode connection end of the second busbar 311 is used to connect the positive electrode of the second battery cell 400, and the negative electrode connection end of the second busbar 311 is used to connect the negative electrode of the third battery cell 400, so that the current flows from the first busbar 311 to the second battery cell 400. The positive electrode of a battery cell 400 flows to the negative electrode of the second battery cell 400 through the first bus 311, the current of the negative electrode of the second battery cell 400 flows to the positive electrode of the second battery cell 400, and flows to the negative electrode of the third battery cell 400 through the second bus 311, and so on, to achieve series connection between multiple battery cells 400. In this embodiment, the positive electrode of the first battery cell 400 and the negative electrode of the second battery cell 400 are located on the same side of the installation area, and the negative electrode of the first battery cell 400 and the positive electrode of the second battery cell 400 are located on the same side of the installation area.

[0064] In one embodiment, the material from which mounting plate 100 is made includes a fire resistant material.

[0065] With such a configuration, the mounting plate 100 can have a certain fire prevention effect. When the battery cell 400 suffers thermal runaway, it further prevents the high-temperature medium generated by the battery cell 400 from breaking through the mounting plate 100 and impacting the electrical connection assembly 300 located on the second surface 120 of the mounting plate 100, thereby improving safety.

[0066] Another aspect of the present application is to provide a battery module comprising an integrated board for a battery module as described in any of the above embodiments.

[0067] The above-mentioned battery module includes an integrated board for battery modules as described in any of the above-mentioned embodiments. The high-temperature medium can enter the drainage cavity 230 from the drainage hole 220 of the guide member 200 provided on the second surface 120, preventing the high-temperature medium from causing impact damage to the bus 311 provided in the mounting groove 111 of the first surface 110. The projection of the bus 311 along the first surface 110 toward the second surface 120 and the projection of the drainage cavity 230 along the first surface 110 toward the second surface 120 are staggered, which can stagger the bus 311 and the high-temperature medium in the drainage cavity 230 in the thickness direction of the mounting plate 100, preventing the bus 311 from being overheated under the influence of the high-temperature medium and causing a short circuit or explosion. Compared with traditional technologies, the above-mentioned integrated board for battery modules can separate the bus 311 from the high-temperature medium while diverting the high-temperature medium, thereby improving the safety of the integrated board during use.

[0068] Specifically, referring to Figures 1 and 6, the battery module includes a battery cell 400 and a battery cell holder 500 (i.e., a holder formed by the module end plate and the module side plate for accommodating the battery cell 400), and the battery cell 400 is arranged in the battery cell holder 500. When using the integrated board for the battery module in the above embodiment, the integrated board for the battery module is installed on the battery cell holder 500 to cover the battery cell 400, and the second surface 120 is set toward the battery cell 400. In this way, when the battery cell 400 has thermal runaway, the high-temperature medium sprayed by the explosion-proof valve of the battery cell 400 can enter the drainage cavity 230 through the drainage hole 220, thereby preventing the high-temperature medium from rushing toward other battery cells 400 in the battery cell holder 500 and the electrical connection component 300 on the first surface 110 and causing an explosion.

[0069] Furthermore, the second surface 120 is disposed toward the explosion-proof valve of the battery cell 400 , so that the high-temperature medium ejected from the explosion-proof valve can more smoothly pass through the drainage hole 220 into the drainage cavity 230 .

[0070] Furthermore, in one embodiment, the high-temperature medium is a conductor such as copper foil or aluminum foil ejected from the explosion-proof valve of the battery cell 400. The high-temperature medium can induce thermal runaway in other battery cells 400, thereby causing the entire battery module or even the battery pack to catch fire and explode. By providing the guide member 200, the high-temperature medium such as copper foil or aluminum foil ejected from the explosion-proof valve of the battery cell 400 can enter the drainage cavity 230 through the drainage hole 220 and be transported in a direction, thereby preventing the high-temperature medium from spreading everywhere and inducing thermal runaway in other battery cells 400, thereby avoiding the explosion of the entire battery pack due to thermal runaway of a battery cell 400.

[0071] In addition, an embodiment of the present application further provides an energy storage device, comprising the battery module described above.

[0072] The above-mentioned energy storage device includes the battery module as described above. The high-temperature medium can enter the drainage cavity 230 from the drainage hole 220 of the guide member 200 provided on the second surface 120, thereby preventing the high-temperature medium from causing impact damage to the bus 311 provided in the mounting groove 111 of the first surface 110. The projection of the bus 311 along the first surface 110 toward the second surface 120 and the projection of the drainage cavity 230 along the first surface 110 toward the second surface 120 are staggered, and the bus 311 and the high-temperature medium in the drainage cavity 230 can be staggered in the thickness direction of the mounting plate 100, thereby preventing the bus 311 from being overheated under the influence of the high-temperature medium and causing a short circuit or explosion. Compared with traditional technologies, the above-mentioned integrated board for battery modules can separate the bus 311 from the high-temperature medium while diverting the high-temperature medium, thereby improving the safety of the integrated board during use.

[0073] Finally, the present application also provides an electricity consumption system, comprising the energy storage device as described above and an electricity-consuming entity, wherein the electricity-consuming entity is electrically connected to the energy storage device.

[0074] The above-mentioned power system includes the energy storage device and the power-consuming body as described above. The power-consuming body is electrically connected to the energy storage device. The high-temperature medium can enter the drainage cavity 230 from the drainage hole 220 of the guide member 200 provided on the second surface 120, preventing the high-temperature medium from causing impact damage to the bus 311 provided in the mounting groove 111 of the first surface 110. The projection of the bus 311 along the first surface 110 toward the second surface 120 and the projection of the drainage cavity 230 along the first surface 110 toward the second surface 120 are staggered, which can stagger the bus 311 and the high-temperature medium in the drainage cavity 230 in the thickness direction of the mounting plate 100, preventing the bus 311 from overheating under the influence of the high-temperature medium and causing a short circuit or explosion. Compared with traditional technologies, the above-mentioned integrated board for battery modules can separate the bus 311 from the high-temperature medium while diverting the high-temperature medium, thereby improving the safety of the integrated board during use.

[0075] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0076] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. An integrated board for a battery module, characterized in that: include: A mounting plate, the mounting plate having a first surface and a second surface opposite to each other, the first surface being provided with a mounting groove, the mounting groove extending along a first direction; a flow guide, the flow guide being arranged on the second surface and having a receiving groove and a drainage hole, the inner surface of the receiving groove being matched with the second surface to form a drainage cavity, the drainage cavity being extended along the first direction, and the drainage hole being communicated with the drainage cavity; as well as, An electrical connection component, the electrical connection component includes a bus, the bus is arranged in the installation groove, and the projection of the bus along the first surface toward the second surface is offset from the projection of the drainage cavity along the first surface toward the second surface.

2. The integrated board for battery module according to claim 1, characterized in that: The guide member includes a baffle, a first connecting portion and a second connecting portion, the baffle extending along the first direction, the first connecting portion and the second connecting portion respectively connected to two sides of the baffle in a one-to-one correspondence, and the first connecting portion and the second connecting portion are both arranged on the second surface, and the second surface, the first connecting portion, the baffle and the second connecting portion are surrounded to form a drainage cavity.

3. The integrated board for battery module according to claim 2, characterized in that: The first connection portion, the second surface, the second connection portion, and at least one end of the baffle are arranged to form a drainage port, and the drainage port is communicated with the drainage cavity.

4. The integrated board for battery module according to claim 2, characterized in that: The drainage holes are arranged on the blocking piece and are provided with at least two of them, and all the drainage holes are arranged at intervals along the first direction.

5. The integrated board for battery module according to claim 1, characterized in that: The busbar has a positive connection end and a negative connection end, and the bottom wall of the mounting groove is provided with at least two connection through holes, the two connection through holes form a connection through hole unit, one of the connection through holes in a connection through hole unit is arranged corresponding to the positive connection end, and the other connection through hole is arranged corresponding to the negative connection end.

6. The integrated board for battery module according to claim 1, characterized in that: A direction perpendicular to the first direction and parallel to the first surface is set as the second direction, at least two installation grooves are provided and are spaced apart along the second direction, and an installation area is formed between two adjacent installation grooves. The electrical connection component also includes an information collection component and a connecting component. The information collection component is arranged in the installation area, and the information collection component is electrically connected to the bus through the connecting component.

7. The integrated board for battery module according to claim 6, characterized in that: At least two busbars are provided, and the two busbars form a busbar unit. The two busbars in a busbar unit are respectively arranged in two adjacent installation grooves.

8. The integrated board for battery module according to claim 7, characterized in that: At least two busbar units are provided and are spaced apart along the first direction.

9. The integrated board for a battery module according to any one of claims 1 to 8, characterized in that: The material made of the mounting plate includes a fireproof material.

10. A battery module, characterized in that: The battery module comprises the integrated board for a battery module according to any one of claims 1 to 9 and a battery cell, the second surface is arranged toward the battery cell, and the busbar is used for being electrically connected to the battery cell.

11. An energy storage device, characterized in that: Comprising at least one battery module as claimed in claim 10.

12. An electricity system, characterized in that: The power consumption system comprises the energy storage device as claimed in claim 11 and an electricity consumption entity, and the electricity consumption entity is electrically connected to the energy storage device.

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