Battery pack and vehicle

Abstract

The utility model provides a battery pack and a vehicle. The safety of the battery pack is improved. The battery pack comprises a shell provided with an accommodating groove; the blade module is located in the containing groove, and the blade module is provided with a positive electrode and a negative electrode; the first patch plug is connected with the shell; the first beam is arranged in the containing groove and extends in the first direction, a first groove is formed in the first beam, and a first cavity and a second cavity which are communicated with the first groove are formed in the first beam; one end of the first conductive piece is connected with the positive electrode, the first conductive piece penetrates through the first cavity and the first groove, the other end of the first conductive piece is connected with the first patch plug, one end of the second conductive piece is connected with the negative electrode, and the other end of the second conductive piece is connected with the second patch plug. The second conductive part is arranged in the second cavity and the first groove in a penetrating mode, and the other end of the second conductive part is connected with the first patch plug.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of batteries, in particular to a battery pack and a vehicle. BACKGROUND

[0002] Thanks to the cost-effectiveness of new energy vehicles, response to environmental protection policies, and multiple advantages of advanced technology, new energy vehicles have become one of the mainstream choices in the vehicle consumer market. The battery pack is the main power source of new energy vehicles.

[0003] In the related art, the battery cells in the battery pack are connected to external connectors or high-voltage distribution boxes through conductive parts. An insulating protective layer is usually arranged on the outer surface of the conductive part. When the battery pack is in thermal runaway, high-temperature smoke is easy to ablate the insulating protective layer, causing the conductive part to be exposed and causing a short circuit and fire, which in turn leads to a safety accident of the battery pack. CONTENT OF THE UTILITY MODEL

[0004] The present application provides a battery pack and a vehicle to improve the safety of the battery pack.

[0005] In a first aspect, the present application provides a battery pack, comprising: a shell provided with a receiving groove; a blade module located in the receiving groove, the blade module having a positive electrode and a negative electrode; a first connector connected to the shell; a first beam arranged in the receiving groove and extending along a first direction, the first beam being provided with a first groove, and the first beam being provided with a first cavity and a second cavity in communication with the first groove; a first conductive part and a second conductive part, one end of the first conductive part being connected to the positive electrode, the first conductive part being arranged in the first cavity and the first groove, the other end of the first conductive part being connected to the first connector, one end of the second conductive part being connected to the negative electrode, the second conductive part being arranged in the second cavity and the first groove, and the other end of the second conductive part being connected to the first connector.

[0006] In the present application, the first conductive part is located in the first cavity except for the connection parts at both ends, and the second conductive part is located in the second cavity except for the connection parts at both ends. In this way, the first beam can protect the first conductive part and the second conductive part. When the battery cells of the blade module are in thermal runaway, the contact between the high-temperature smoke and the first conductive part and the second conductive part can be reduced or even isolated, the probability of a short circuit and fire of the battery pack caused by ablation of the insulating protective layer on the outside of the first conductive part and the second conductive part by high-temperature smoke can be reduced, and thus the safety and reliability of the battery pack can be improved.

[0007] In some embodiments, the shell comprises a bottom plate, a first side plate and a second side plate connected to the bottom plate, the second side plate and the first side plate are oppositely arranged and have the same extension direction as the first beam, the battery pack further comprises a second beam, the extension direction of the second beam is the same as that of the first beam; the first side plate and the first beam are integrally formed, and / or the second side plate and the second beam are integrally formed.

[0008] In some embodiments, further comprising: a second connector connected to the shell; a third beam extending in a second direction, the third beam has a third cavity inside, the second direction intersects the first direction; a third conductive member and a fourth conductive member, one end of the third conductive member passes through the first slot and is connected to the first connector, the other end passes through the third cavity and is connected to the second connector, one end of the fourth conductive member passes through the first slot and is connected to the first connector, the other end passes through the third cavity and is connected to the second connector.

[0009] In some embodiments, the shell comprises a bottom plate, a third side plate and a fourth side plate, the third side plate and the fourth side plate are oppositely arranged; the third side plate is provided with a fourth cavity inside, the third side plate is provided with a first exhaust hole in communication with the fourth cavity on one side surface close to the accommodating groove, the fourth side plate is provided with a fifth cavity inside, the fourth side plate is provided with a second exhaust hole in communication with the fifth cavity on one side surface close to the accommodating groove.

[0010] In some embodiments, the battery pack further comprises a second beam arranged in the accommodating groove and at least one fourth beam between the first beam and the second beam, the first beam, the second beam and the fourth beam have the same extension direction, and the two ends of the third beam abut against the first beam and the second beam respectively;

[0011] The height of the fourth beam is higher than that of the third beam, and the fourth beam is provided with a second slot opposite to the third beam; the second beam is provided with a sixth cavity in communication with the fourth cavity and the fifth cavity respectively, and the second beam is provided with a third exhaust hole in communication with the sixth cavity on one side surface close to the accommodating groove.

[0012] In some embodiments, the two ends of the fourth beam are connected to the third side plate and the fourth side plate respectively; the fourth beam is provided with a second slot opposite to the third beam, and the fourth beam is provided with a seventh cavity and an eighth cavity in communication with the second slot; the other end of the seventh cavity is in communication with the fourth cavity, and the other end of the eighth cavity is in communication with the fifth cavity.

[0013] In some embodiments, the battery pack further comprises a first explosion-proof valve and a second explosion-proof valve, the first explosion-proof valve is connected to a side surface of the third side plate away from the accommodating groove and communicates with the fourth cavity, and the second explosion-proof valve is connected to a side surface of the fourth side plate away from the accommodating groove and communicates with the fifth cavity.

[0014] In some embodiments, the battery pack further comprises a cover plate, a first adhesive layer and a second adhesive layer, the blade module is connected to the bottom wall of the shell through the first adhesive layer, the cover plate is connected to the blade module through the second adhesive layer, and the cover plate and the shell are sealingly connected.

[0015] In some embodiments, the inside of the cover plate is provided with a cooling flow channel; and / or, the shell comprises a bottom plate opposite to the cover plate, and the inside of the bottom plate is provided with the cooling flow channel.

[0016] In a second aspect, the application provides a vehicle comprising the battery pack of the first aspect. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 A structural schematic diagram of a battery pack provided by an embodiment of the application is shown in the figure;

[0018] Figure 2 A structural schematic diagram of a battery pack provided by an embodiment of the application is shown in the figure;

[0019] Figure 3 A structural schematic diagram of a third conductive member and a fourth conductive member provided by an embodiment of the application is shown in the figure;

[0020] Figure 4 A structural schematic diagram of a third conductive member and a fourth conductive member provided by an embodiment of the application is shown in the figure; Figure 3 An enlarged structural schematic diagram of M in the figure;

[0021] Figure 5 An installation schematic diagram of a shell and a beam provided by an embodiment of the application is shown in the figure;

[0022] Figure 6 A structural schematic diagram of a first side plate and a first beam provided by an embodiment of the application is shown in the figure;

[0023] Figure 7 A structural schematic diagram of a third beam provided by an embodiment of the application is shown in the figure;

[0024] Figure 8 A structural schematic diagram of a second side plate and a second beam provided by an embodiment of the application is shown in the figure;

[0025] Figure 9 A structural schematic diagram of a fourth beam provided by an embodiment of the application is shown in the figure.

[0026] The following is a description of the reference numerals in the figure:

[0027] 10 - battery pack;

[0028] 100 - housing, 101 - accommodating groove, 110 - bottom plate, 120 - first side plate, 130 - second side plate, 140 - third side plate, 150 - fourth side plate;

[0029] 200 - blade module, 210 - battery cell;

[0030] 300 - first connector, 400 - first beam, 410 - first groove, 420 - first cavity, 430 - second cavity, 500 - first conductive member, 600 - second conductive member, 700 - second beam, 710 - sixth cavity, 720 - third exhaust hole, 800 - second connector, 900 - third beam, 910 - third cavity, 1000 - third conductive member, 1100 - fourth conductive member, 1200 - fourth beam, 1210 - second groove, 1220 - seventh cavity, 1230 - eighth cavity. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application is further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application, and are not used to limit the present application.

[0032] In the description of the present application, it should be understood that if the orientation or position relationship indicated by the terms "upper", "lower", "left", "right" and the like is based on the orientation or position relationship shown in the drawings, it is only for the purpose of facilitating the description of the present application and simplifying the description, and does not indicate or imply that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, therefore the terms describing the position relationship in the drawings are only used for exemplary description, and cannot be understood as a limitation of the present patent, for those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0033] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0034] In the description of this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0035] Firstly, embodiments of this application provide a battery pack 10. For example... Figures 1 to 6 As shown, the battery pack 10 includes a housing 100, a blade module 200, a first connector 300, a first beam 400, a first conductive element 500, and a second conductive element 600. The housing 100 has a receiving groove 101, and the blade module 200 is located in the receiving groove 101. The blade module 200 has a positive terminal and a negative terminal. The first connector 300 is connected to the housing 100. The first beam 400 is disposed in the receiving groove 101 and extends along a first direction X. The first beam 400 has a first groove 410, and the first beam 400 also has a first cavity 420 and a second cavity 430 communicating with the first groove 410. One end of the first conductive element 500 is connected to the positive electrode, and the first conductive element 500 passes through the first cavity 420 and the first groove 410. The other end of the first conductive element 500 is connected to the first connector 300. One end of the second conductive element 600 is connected to the negative electrode, and the second conductive element 600 passes through the second cavity 430 and the first groove 410. The other end of the second conductive element 600 is connected to the first connector 300.

[0036] In this application, the housing 100 is part of the outer shell of the battery pack 10. For example, the housing 100 can be the bottom shell of the battery pack outer shell. Typically, the battery pack 10 also includes a cover plate (not shown in the figure). After the blade module 200 is disposed in the receiving groove 101, the cover plate is connected to the housing 100, thereby sealing the receiving groove 101 and providing necessary protection and support for the blade module 200, preventing the blade module 200 from being damaged by the external environment. The material of the housing 100 can be, for example, aluminum, aluminum alloy, steel, etc.

[0037] The blade module 200 is a power supply element within the battery pack 10, responsible for storing electrical energy and outputting it when needed. There can be one or more blade modules 200. When there are multiple blade modules 200, they can be connected in series or in parallel. Each blade module 200 may include multiple battery cells 210, which can be blade cells.

[0038] like Figures 3 to 5 As shown and referenced Figure 1The one end of the first conductive member 500 is connected to the positive pole of the blade module 200, and the other end is connected to the first connector 300. The one end of the second conductive member 600 is connected to the negative pole of the blade module 200, and the other end is connected to the first connector 300. In this way, the high-voltage current of the blade module 200 can be introduced into the first connector 300 through the first conductive member 500 and the second conductive member 600. The first connector 300 can be used to connect with an external BDU (Battery Energy Distribution Unit) for example, so that the BDU can control the current output of the battery pack 10. The first conductive member 500 and the second conductive member 600 can be copper bars for example, which can transmit high-voltage current to ensure the reliability and stability of the electrical connection.

[0039] Further, the first beam 400 is arranged in the accommodating groove 101 and extends along the first direction X, the first beam 400 can be a front end expansion beam in the shell 100, and the first direction can be the width direction of the battery pack 10. The first beam 400 is provided with a first groove 410, and the first beam 400 is further provided with a first cavity 420 and a second cavity 430. Specifically, the first cavity 420 and the second cavity 430 are respectively located on opposite sides of the first groove 410. The first cavity 420 and the second cavity 430 are in communication with the first groove 410, which means that the first cavity 420 penetrates through one of the side walls of the first groove 410, and the second cavity 430 penetrates through the other side wall of the first groove 410.

[0040] The battery pack 10 of the present application is provided with the first cavity 420 and the second cavity 430 in the first beam 400, which are in communication with the first groove 410. One end of the first conductive member 500 is connected with the positive electrode of the blade module 200, and the other end is connected with the first connector 300 after sequentially passing through the first cavity 420 and the first groove 410. One end of the second conductive member 600 is connected with the negative electrode of the blade module 200, and the other end is connected with the first connector 300 after sequentially passing through the second cavity 430 and the first groove 410. That is, the remaining part of the first conductive member 500 except the connecting part at both ends is located in the first cavity 420, and the remaining part of the second conductive member 600 except the connecting part at both ends is located in the second cavity 430. In this way, the first beam 400 can protect the first conductive member 500 and the second conductive member 600. When the battery cell of the blade module 200 is in thermal runaway, the contact between the high-temperature flue gas and the first conductive member 500 and the second conductive member 600 can be reduced or even isolated, the probability of the short circuit and fire caused by the ablation of the insulating protective layer outside the first conductive member 500 and the second conductive member 600 by the high-temperature flue gas can be reduced, and thus the safety and reliability of the battery pack 10 can be improved. In addition, the majority of the structure of the first conductive member 500 and the second conductive member 600 is arranged inside the first beam 400, and the space occupied by the first conductive member 500 and the second conductive member 600 can be reduced, and thus the utilization rate of the accommodation groove 101 can be improved, and the energy density of the battery pack 10 can be further improved. Furthermore, compared with the way of directly arranging the BDU in the accommodation groove 101 in the related art, the present application only has the first connector 300, which is connected to the external BDU through the first connector 300. In this way, the utilization rate of the accommodation groove 101 can be further improved, and the energy density of the battery pack 10 can be further improved.

[0041] Optionally, at least part of the first connector 300 can be arranged on the side of the shell 100 away from the accommodation groove 101, so that the first connector 300 also does not occupy too much space of the accommodation groove 101, and thus the energy density of the battery pack 10 can be further improved.

[0042] In some embodiments, as shown in Figure 2 、 Figure 3 、 Figure 5 and Figure 6 , the shell 100 includes a bottom plate 110, and a first side plate 120 and a second side plate 130 connected with the bottom plate 110. The second side plate 130 is arranged opposite to the first side plate 120 and has the same extension direction as the first beam 400. The first side plate 120 and the second side plate 130 can be the front and rear frames of the shell 100, wherein the front and rear directions are the front and rear directions of the vehicle when the battery pack 10 is installed on the vehicle.

[0043] Further, the battery pack 10 further comprises a second beam 700, the extending direction of the second beam 700 is the same as the extending direction of the first beam 400. The second beam 700 can be a rear end expansion beam of the battery pack 10, that is, when the blade module 200 is installed in the accommodating groove 101, the first beam 400 and the second beam 700 are located at the front end and the rear end of the blade module 200 respectively, the first beam 400 and the second beam 700 can improve the strength and structural stability of the shell 100 on the one hand, and can absorb the expansion force of the blade module 200 during operation on the other hand.

[0044] Further, as shown in Figure 6 , the first side plate 120 and the first beam 400 are integrally formed. That is, the first side plate 120 and the first beam 400 can be integrally formed by injection molding, casting or the like. In this way, the structural strength of the shell 100 can be further improved, and the manufacturing cost of the shell 100 can be reduced.

[0045] Further, as shown in Figure 8 , the second side plate 130 and the second beam 700 are integrally formed. That is, the second side plate 130 and the second beam 700 can be integrally formed by injection molding, casting or the like. In this way, the structural strength of the shell 100 can be further improved, and the manufacturing cost of the shell 100 can be reduced.

[0046] In some embodiments, as shown in Figure 3 and Figure 4 , part of the structure of the first connector 300 is located in the first groove 410 of the first beam 400. In this way, the convenience of connecting the first conductive member 500 and the second conductive member 600 to the first connector 300 can be improved.

[0047] In some embodiments, as shown in Figures 1 to 5 , Figure 7 , the battery pack 10 further comprises a second connector 800, a third beam 900, a third conductive member 1000 and a fourth conductive member 1100. The second connector 800 is connected with the shell 100, and the second connector 800 and the first connector 300 are located on the two sides of the shell 100 in the second direction Y, and the second direction Y intersects the first direction X. The third beam 900 extends along the second direction Y, and the third beam 900 is provided with a third cavity 910 inside, one end of the third conductive member 1000 is connected with the first connector 300 after penetrating through the first groove 410, and the other end is connected with the second connector 800 after penetrating through the third cavity 910, and one end of the fourth conductive member 1100 is connected with the first connector 300 after penetrating through the first groove 410, and the other end is connected with the second connector 800 after penetrating through the third cavity 910.

[0048] In this embodiment, the battery pack 10 further includes a second connector 800, a third beam 900, a third conductive member 1000, and a fourth conductive member 1100. The second connector 800 may, for example, be used to connect with a rear-drive module of a vehicle to supply power to the rear-drive module. The third conductive member 1000 and the fourth conductive member 1100 may be rear-drive high-voltage copper bars that draw power from the first connector 300, supply power to the second connector 800, and ultimately supply power to the rear-drive module of the vehicle. The third beam 900 may be a longitudinal beam within the housing 100, and the second direction Y may be the length direction of the battery pack 10. Optionally, the first connector 300 may be connected with the first side plate 120, and the second connector 800 may be connected with the second side plate 130.

[0049] Based on the above structure, the third conductive member 1000 and the fourth conductive member 1100 are located within the third cavity 910 of the third beam 900 except for the connection portions at the two ends. In this way, the third beam 900 can protect the third conductive member 1000 and the fourth conductive member 1100. When the blade module 200 experiences thermal runaway, the contact between high-temperature flue gas and the third conductive member 1000 and the fourth conductive member 1100 can be reduced or even isolated, and the probability of a short circuit and fire caused by the ablation of the insulating protective layer outside the third conductive member 1000 and the fourth conductive member 1100 by high-temperature flue gas can be reduced, thereby facilitating further improvement in the safety and reliability of the battery pack 10. In addition, the majority of the structure of the third conductive member 1000 and the fourth conductive member 1100 is arranged inside the third beam 900 in this embodiment, which can also reduce the space occupied by the third conductive member 1000 and the fourth conductive member 1100, thereby facilitating improvement in the utilization rate of the accommodation groove 101 and further facilitating improvement in the energy density of the battery pack 10.

[0050] Optionally, in some embodiments, the third cavity 910 within the third beam 900 can be divided into a first sub-cavity (not shown in the figure) and a second sub-cavity (not shown in the figure) that are isolated from each other, the first sub-cavity being used to accommodate the third conductive member 1000, and the second sub-cavity being used to accommodate the fourth conductive member 1100. In this way, physical isolation between the third conductive member 1000 and the fourth conductive member 1100 can be further achieved, thereby facilitating further improvement in the safety and reliability of the battery pack 10.

[0051] In some embodiments, as Figures 1 to 5As shown, the shell 100 further comprises a third side plate 140 and a fourth side plate 150 connected with the bottom plate 110, the third side plate 140 and the fourth side plate 150 are oppositely arranged and have the same extension direction as the third beam 900. The third side plate 140 and the fourth side plate 150 can be the left or right frame of the shell 100. The third side plate 140 is internally provided with a fourth cavity (not shown in the figure), and a plurality of first exhaust holes 141 in communication with the fourth cavity are arranged on the side surface of the third side plate 140 close to the accommodating groove 101. The fourth side plate 150 is internally provided with a fifth cavity, and a plurality of second exhaust holes (not shown in the figure) in communication with the fifth cavity are arranged on the side surface of the fourth side plate 150 close to the accommodating groove 101.

[0052] In this embodiment, the third side plate 140 is internally provided with a fourth cavity, and the fourth side plate 150 is internally provided with a fifth cavity. When the blade module 200 is in thermal runaway and generates high-temperature flue gas, the high-temperature flue gas can enter the fourth cavity through the first exhaust hole 141, and also enter the fifth cavity through the second exhaust hole. In this way, a first flue gas discharge channel is constructed, which avoids the accumulation of flue gas in the accommodating groove 101, thereby further improving the safety and reliability of the battery pack 10. In addition, the first flue gas discharge channel is isolated from the first conductive member 400, the second conductive member 500, the third conductive member 1000, and the fourth conductive member 1100, which further improves the safety and reliability of the battery pack 10.

[0053] In some embodiments, as Figures 1 to 5 As shown, the battery pack 10 further comprises at least one fourth beam 1200 arranged in the accommodating groove 101, the fourth beam 1200 has the same extension direction as the first beam 400 and is connected with the third side plate 140 and the fourth side plate 150 at both ends. The at least one fourth beam 1200 means that the number of the fourth beam 1200 can be one or multiple, and when it is multiple, the multiple fourth beams 1200 are arranged at intervals and are all located between the first beam 400 and the second beam 700. In this way, the third beam 900 and the fourth beam 1200 divide the accommodating groove 101 into multiple sub-accommodating grooves, and one blade module 200 can be placed in each sub-accommodating groove. In this way, the number of the fourth beam 1200 can be flexibly set according to actual needs, thereby realizing the increase or decrease of the number of the blade module 200, and thus improving the flexibility and compatibility of the battery pack 10.

[0054] Further, as Figure 3 and Figure 5 , Figure 8As shown, the two ends of the third beam 900 abut against the first beam 400 and the second beam 700 respectively, the fourth beam 1200 has a height higher than that of the third beam 900, and the fourth beam 1200 is provided with a second groove 1210 opposite to the third beam 900. The second beam 700 is provided with a sixth cavity 710, and a third exhaust hole 720 in communication with the sixth cavity 710 is arranged on a side surface of the second beam 700 close to the accommodating groove 101, the third exhaust hole 720 is arranged opposite to the third beam 900, and the sixth cavity 710 is in communication with the fourth cavity and the fifth cavity respectively.

[0055] In this embodiment, the third beam 900 has a height smaller than that of the fourth beam 1200, and the fourth beam 1200 is provided with the second groove 1210. Further, the third exhaust hole 720 of the second beam 700 is arranged opposite to the third beam 900, and the sixth cavity 710 of the second beam 700 is in communication with the fourth cavity and the fifth cavity respectively. In this way, when the blade module 200 generates high-temperature flue gas due to thermal runaway, the high-temperature flue gas can diffuse along the extension direction of the third beam 900, then pass through the slot of the second groove 1210 and the third exhaust hole 720 into the sixth cavity 710 of the second beam 700 in turn, and finally into the fourth cavity and the fifth cavity. In this way, a second flue gas discharge channel is constructed, which avoids the accumulation of flue gas in the accommodating groove 101, thereby further improving the safety and reliability of the battery pack 10. In addition, the second flue gas discharge channel is isolated from the first conductive member 400, the second conductive member 500, the third conductive member 1000 and the fourth conductive member 1100, thereby further improving the safety and reliability of the battery pack 10.

[0056] In some embodiments, as shown in Figure 5 and Figure 9 As shown, the fourth beam 1200 is provided with a seventh cavity 1220 and an eighth cavity 1230 in communication with the second groove 1210, the other end of the seventh cavity 1220 is in communication with the fourth cavity, and the other end of the eighth cavity 1230 is in communication with the fifth cavity.

[0057] In this embodiment, the fourth beam 1200 further has the seventh cavity 1220 and the eighth cavity 1230. In this way, when the blade module 200 generates high-temperature flue gas due to thermal runaway, the high-temperature flue gas can enter the seventh cavity 1220 and the eighth cavity 1230 of the fourth beam 1200 along the second groove 1210 respectively, and finally enter the fourth cavity and the fifth cavity. In this way, a third flue gas discharge channel is constructed, which avoids the accumulation of flue gas in the accommodating groove 101, thereby further improving the safety and reliability of the battery pack 10. In addition, the third flue gas discharge channel is isolated from the first conductive member 400, the second conductive member 500, the third conductive member 1000 and the fourth conductive member 1100, thereby further improving the safety and reliability of the battery pack 10.

[0058] In some embodiments, the battery pack 10 further comprises a first explosion-proof valve (not shown in the figure) and a second explosion-proof valve (not shown in the figure), the first explosion-proof valve is connected to the side surface of the third side plate 140 away from the containing groove 101 and communicates with the fourth cavity, and the second explosion-proof valve is connected to the side surface of the fourth side plate 150 away from the containing groove 101 and communicates with the fifth cavity. In this way, the flue gas is finally discharged to the outside of the battery pack 10 through the first explosion-proof valve and the second explosion-proof valve, thereby facilitating the improvement of the safety and reliability of the battery pack 10.

[0059] In some embodiments, the first side plate 120, the second side plate 130, the third side plate 140 and the fourth side plate 150 are all hollow side plates, so that the high-temperature flue gas can be discharged through the cavities, and the weight of the battery pack 10 can be reduced.

[0060] In some embodiments, the battery pack 10 further comprises a cover plate, a first adhesive layer (not shown in the figure) and a second adhesive layer (not shown in the figure), the blade module 200 is connected to the bottom wall of the shell 100 through the first adhesive layer, and the cover plate is connected to the blade module 200 through the second adhesive layer. The cover plate and the shell 100 are sealingly connected. In this way, the sealing of the blade module 200 can be realized. In this way, on the one hand, the structural modal of the battery pack 10 can be improved, the influence of vibration on the battery pack 10 during vehicle operation or transportation can be reduced, and the risk of electrode material falling off, internal short circuit and the like caused by vibration can be reduced, thereby facilitating the improvement of the stability and reliability of the battery pack 10. On the other hand, the structural strength of the battery pack 10 under extreme conditions such as collision and falling can be improved, the risk of short circuit, thermal runaway and the like can be reduced, and the overall safety can be improved. On the other hand, the vibration of the battery pack 10 during operation can be reduced, thereby facilitating the reduction of the noise level of the vehicle and the improvement of the driving comfort. On the other hand, the above sealing method can realize the modular design of the battery pack 10, and the battery control module such as a high-voltage distribution box (BDU) is not arranged in the battery pack 10, but is connected to the external battery control module through the first connector 300. When applied to different vehicle models, only the battery pack 10 with the corresponding capacity needs to be replaced, thereby facilitating the convenience of replacing the battery pack 10 of the vehicle.

[0061] In some embodiments, the inside of the cover plate is provided with a cooling flow channel (not shown in the figure). By providing the cooling flow channel in the inside of the cover plate, the heat dissipation of the battery pack 10 can be realized, thereby facilitating the improvement of the safety and reliability of the battery pack 10. In this case, the inverted installation of the blade module 200 in the battery pack 10 can be realized, thereby facilitating the improvement of the performance and safety of the battery pack 10. At this time, the first adhesive layer can be a structural adhesive layer, and the second adhesive layer can be a heat-conducting adhesive layer.

[0062] In some embodiments, the inner part of the bottom plate 110 is provided with a cooling flow channel. By providing the cooling flow channel in the inner part of the bottom plate 110, heat dissipation of the battery pack 10 can be achieved, thereby facilitating improvement of the safety and reliability of the battery pack 10. At this time, the first adhesive layer can be a heat-conducting adhesive layer, and the second adhesive layer can be a structural adhesive layer.

[0063] In some embodiments, the inner part of the bottom plate 110 is provided with a cooling flow channel. By providing the cooling flow channel in the inner part of the bottom plate 110, heat dissipation of the battery pack 10 can be achieved, thereby facilitating improvement of the safety and reliability of the battery pack 10. At this time, the first adhesive layer can be a heat-conducting adhesive layer, and the second adhesive layer can be a structural adhesive layer.

[0064] In some embodiments, the inner part of the bottom plate 110 is provided with a cooling flow channel. By providing the cooling flow channel in the inner part of the bottom plate 110, heat dissipation of the battery pack 10 can be achieved, thereby facilitating improvement of the safety and reliability of the battery pack 10. At this time, the first adhesive layer can be a heat-conducting adhesive layer, and the second adhesive layer can be a structural adhesive layer.

[0065] The above is merely a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical scope disclosed in the present application, which shall be covered within the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A battery pack, characterized by, The battery pack comprises: a shell provided with a receiving groove; a blade module located in the receiving groove, the blade module having a positive electrode and a negative electrode; a first connector connected with the shell; a first beam provided in the receiving groove and extending in a first direction, the first beam being provided with a first groove, the first beam being provided with a first cavity and a second cavity in communication with the first groove; a first conductive member and a second conductive member, one end of the first conductive member being connected with the positive electrode, the first conductive member being provided in the first cavity and the first groove, the other end of the first conductive member being connected with the first connector, one end of the second conductive member being connected with the negative electrode, the second conductive member being provided in the second cavity and the first groove, the other end of the second conductive member being connected with the first connector.

2. The battery pack of claim 1, wherein, The shell comprises a bottom plate, a first side plate and a second side plate connected with the bottom plate, the second side plate and the first side plate are oppositely arranged and have the same extending direction as the first beam, the battery pack further comprises a second beam, the extending direction of the second beam is the same as that of the first beam; The first side plate and the first beam are integrally formed, and / or the second side plate and the second beam are integrally formed.

3. The battery pack of claim 1, wherein, Further comprising: a second connector connected with the shell; a third beam extending in a second direction, the third beam being provided with a third cavity inside, the second direction intersecting the first direction; a third conductive member and a fourth conductive member, one end of the third conductive member penetrating the first groove and being connected with the first connector, the other end penetrating the third cavity and being connected with the second connector, one end of the fourth conductive member penetrating the first groove and being connected with the first connector, the other end penetrating the third cavity and being connected with the second connector.

4. The battery pack of claim 3, wherein, The shell comprises a bottom plate, a third side plate and a fourth side plate, the third side plate and the fourth side plate are oppositely arranged; The third side plate is provided with a fourth cavity inside, one side surface of the third side plate close to the receiving groove is provided with a first exhaust hole in communication with the fourth cavity, the fourth side plate is provided with a fifth cavity inside, one side surface of the fourth side plate close to the receiving groove is provided with a second exhaust hole in communication with the fifth cavity.

5. The battery pack of claim 4, wherein, The battery pack further comprises a second beam provided in the receiving groove and at least one fourth beam located between the first beam and the second beam, the first beam, the second beam and the fourth beam have the same extending direction, the two ends of the third beam respectively abut against the first beam and the second beam; The height of the fourth beam is higher than that of the third beam, the fourth beam is provided with a second groove opposite to the third beam; the second beam is provided with a sixth cavity in communication with the fourth cavity and the fifth cavity inside, one side surface of the second beam close to the receiving groove is provided with a third exhaust hole in communication with the sixth cavity.

6. The battery pack of claim 4, wherein, The battery pack further comprises at least one fourth beam provided in the receiving groove, the two ends of the fourth beam are respectively connected with the third side plate and the fourth side plate; The fourth beam is provided with a second groove opposite to the third beam, the fourth beam is provided with a seventh cavity and an eighth cavity communicated with the second groove, the other end of the seventh cavity is communicated with the fourth cavity, and the other end of the eighth cavity is communicated with the fifth cavity.

7. The battery pack of any one of claims 4-6, wherein, The battery pack further comprises a first explosion-proof valve and a second explosion-proof valve, the first explosion-proof valve is connected with the side surface of the third side plate away from the containing groove and communicated with the fourth cavity, and the second explosion-proof valve is connected with the side surface of the fourth side plate away from the containing groove and communicated with the fifth cavity.

8. The battery pack of claim 1, wherein, The battery pack further comprises a cover plate, a first adhesive layer and a second adhesive layer, the blade module is connected with the bottom wall of the shell through the first adhesive layer, and the cover plate is connected with the blade module through the second adhesive layer.

9. The battery pack of claim 8, wherein, The inside of the cover plate is provided with a cooling flow channel, and / or the shell comprises a bottom plate opposite to the cover plate, and the inside of the bottom plate is provided with the cooling flow channel.

10. A vehicle characterized by comprising: The battery pack comprises the battery pack according to any one of claims 1-9.

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