Battery pack and vehicle

Abstract

The invention discloses a battery pack and a vehicle, the battery pack comprises a shell, a battery mounting cavity and an electric control mounting cavity which are distributed along a first direction are formed in the shell, a middle longitudinal beam is arranged in the battery mounting cavity, the middle longitudinal beam divides the battery mounting cavity into at least two mounting areas, and battery modules are mounted in the mounting areas; the battery module is connected with an electrode copper bar, the electrode copper bar extends into the electric control mounting cavity, the shell is provided with at least one first connector at one end, deviating from the electric control mounting cavity, of the battery mounting cavity, and the electrode copper bar is electrically connected with the first connector through the first copper bar; wherein the first copper bar comprises a first positive electrode copper bar and a first negative electrode copper bar, the number of the middle longitudinal beams is at least two, the first positive electrode copper bar and one middle longitudinal beam are distributed side by side in the vertical direction, and the first negative electrode copper bar and the other middle longitudinal beam are distributed side by side in the vertical direction. According to the battery pack provided by the embodiment of the invention, the space utilization rate can be improved, the size and weight of the shell are reduced, and the arrangement cost of the shell is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle manufacturing, and in particular to a battery pack and a vehicle having the battery pack. Background Art

[0002] A copper busbar is provided in the battery pack, and its position is fixed by the frame of the box assembly. Therefore, the box assembly needs to reserve a fixed space for the copper busbar. The existence of this fixed space increases the volume and weight of the box assembly, thereby increasing the manufacturing cost of the box assembly. There is room for improvement. Summary of the Invention

[0003] The present invention aims to address at least one of the technical problems existing in the prior art. To this end, the present invention provides a battery pack that ensures the reliability of the battery modules and electrical components, increases the battery pack capacity and vehicle range, and effectively improves space utilization, reduces the volume and weight of the housing, and reduces the cost of installing the housing.

[0004] According to an embodiment of the present invention, a battery pack includes: a shell, wherein a battery installation cavity and an electronic control installation cavity distributed along a first direction are formed in the shell, an intermediate longitudinal beam is provided in the battery installation cavity, the intermediate longitudinal beam divides the battery installation cavity into at least two installation areas, a battery module is installed in the installation area, the battery module is connected to an electrode copper bar, and the electrode copper bar extends into the electronic control installation cavity, the shell is provided with at least one first connector at an end of the battery installation cavity away from the electronic control installation cavity, the electrode copper bar is electrically connected to the first connector via the first copper bar; wherein the first copper bar includes a first positive copper bar and a first negative copper bar, the first positive copper bar and the first negative copper bar are electrically connected to the first connector respectively, there are at least two intermediate longitudinal beams, and the at least two intermediate longitudinal beams are spaced apart and distributed along the second direction, the first positive copper bar and one of the intermediate longitudinal beams are distributed side by side in the vertical direction, and the first negative copper bar and the other of the intermediate longitudinal beams are distributed side by side in the vertical direction, and the first direction intersects with the second direction.

[0005] The battery pack according to an embodiment of the present invention forms a battery installation cavity and an electronic control installation cavity inside the housing, so that the battery module and the electrical components can be arranged at intervals to ensure the reliability of their respective operations, and the battery module and the electrical components can be neatly arranged inside the housing to improve the space utilization rate. Moreover, the battery module is connected with an electrode copper row, and the electrode copper row is electrically connected to the first connector through the first copper row, which can provide power for the vehicle. At the same time, the battery installation cavity is divided into at least two installation areas by the middle longitudinal beam, which can increase the number of battery modules arranged, improve the capacity of the battery pack and the endurance of the vehicle. And the first positive copper row and one of the middle longitudinal beams are arranged side by side, and the first negative copper row and the other middle longitudinal beam are arranged side by side, which can reduce the additional installation space reserved for the first copper row, further improve the space utilization rate, effectively reduce the volume and weight of the housing, and reduce the setting cost of the housing.

[0006] For the battery pack according to some embodiments of the present invention, the electrode copper row includes a total positive copper row and a total negative copper row. The first positive copper row is connected between the total positive copper row and the first connector, and the first negative copper row is connected between the total negative copper row and the first connector.

[0007] For the battery pack according to some embodiments of the present invention, the first direction is along the length direction of the housing, and the second direction is along the width direction of the housing.

[0008] For the battery pack according to some embodiments of the present invention, it further includes a first fixing member, and the first fixing member is used to detachably connect the first copper row to the middle longitudinal beam.

[0009] For the battery pack according to some embodiments of the present invention, the first fixing member is configured as a tie strap, and the tie strap is used to pass through the first copper row; and / or, a plurality of the first fixing members are provided, and the plurality of first fixing members are spaced apart along the first direction and distributed on the middle longitudinal beam; and / or, the first fixing member is arranged on the upper surface of the middle longitudinal beam.

[0010] For the battery pack according to some embodiments of the present invention, it further includes an interlock wire, and the interlock wire and the first copper row are arranged side by side on the middle longitudinal beam and are both located between two adjacent installation areas.

[0011] For the battery pack according to some embodiments of the present invention, the middle longitudinal beam is provided with an installation bracket, and the interlock wire passes through the installation bracket; wherein, the installation bracket is provided with a first fixing member, and the first fixing member is used to pass through the first copper row.

[0012] For the battery pack according to some embodiments of the present invention, at least one second connector is provided on one side of the electronic control installation cavity of the housing facing away from the battery installation cavity, and the electrode copper row is electrically connected to the second connector through the second copper row.

[0013] The battery pack according to some embodiments of the present invention, the electrode copper busbar includes a total positive copper busbar and a total negative copper busbar; wherein, the second copper busbar includes a second positive copper busbar and a second negative copper busbar, the second positive copper busbar is connected between the total positive copper busbar and the second connector, and the second negative copper busbar is connected between the total negative copper busbar and the second connector.

[0014] The battery pack according to some embodiments of the present invention, the electrode copper busbar includes a total positive copper busbar and a total negative copper busbar, a fuse, a positive relay and a negative relay are installed in the electronic control installation cavity, a first connection part and a second connection part are further provided in the electronic control installation cavity, the first copper busbar includes a first positive copper busbar and a first negative copper busbar, and the second copper busbar includes a second positive copper busbar and a second negative copper busbar; wherein, the fuse and the positive relay are connected between the first connection part and the total positive copper busbar, the negative relay is connected between the second connection part and the total negative copper busbar, and the first positive copper busbar is connected between the first connection part and the first connector, the second positive copper busbar is connected between the first connection part and the second connector, the first negative copper busbar is connected between the second connection part and the first connector, and the second negative copper busbar is connected between the second connection part and the second connector.

[0015] The present invention also provides a vehicle.

[0016] The vehicle according to the embodiments of the present invention includes the battery pack according to any one of the above embodiments.

[0017] The advantages of the vehicle and the above battery pack over the prior art are the same and will not be elaborated here.

[0018] The additional aspects and advantages of the present invention will be partly given in the following description, partly will become obvious from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present invention will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

[0020] Figure 1 is a schematic structural diagram of a battery pack according to an embodiment of the present invention Figure 1 ;

[0021] Figure 2 is a schematic structural diagram of a battery pack according to an embodiment of the present invention Figure 2 ;

[0022] Figure 3 is a partial schematic diagram of a battery pack according to an embodiment of the present inventionFigure 1 ;

[0023] Figure 4 A partial schematic diagram of a battery pack according to an embodiment of the present invention Figure 2 .

[0024] Reference numerals:

[0025] Battery pack 100,

[0026] Housing 1, battery installation cavity 11, installation area 111, battery module 112, thermal insulation pad 113, electronic control installation cavity 12, electronic control box 121, fuse 1211, positive relay 1212, negative relay 1213, first connecting portion 1214, second connecting portion 1215, battery management system 122, middle cross beam 13, middle longitudinal beam 14, mounting hole 141, total positive copper bar 151, total negative copper bar 152, first copper bar 16, first positive copper bar 161, first negative copper bar 162, first fixing member 163, second copper bar 17, second positive copper bar 171, second negative copper bar 172,

[0027] First connector 2, second connector 3, interlock wire 4, mounting bracket 41, card slot 411,

[0028] Explosion-proof valve 5, mounting part 6, cover plate 7. DETAILED DESCRIPTION

[0029] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0030] In the description of the present invention, it should be understood that 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" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do 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 limiting the present invention. In addition, features defined as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0031] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0032] Unless otherwise specified, the front-rear direction in this application is the longitudinal direction of the vehicle, i.e., the X direction; the left-right direction is the transverse direction of the vehicle, i.e., the Y direction; and the up-down direction is the vertical direction of the vehicle, i.e., the Z direction.

[0033] The following refers to Figures 1 - 4 Describe the battery pack 100 according to an embodiment of the present invention, which can ensure the reliability of the battery module 112 and the electrical components, and can improve the capacity of the battery pack 100 and the endurance of the vehicle. In addition, it can effectively improve the space utilization rate, reduce the volume and weight of the housing 1, and reduce the installation cost of the housing 1.

[0034] As Figures 1 - 4 As shown, the battery pack 100 according to an embodiment of the present invention includes: a housing 1.

[0035] A battery installation cavity 11 and an electronic control installation cavity 12 are formed in the housing 1 and are distributed along a first direction. An intermediate longitudinal beam 14 is provided in the battery installation cavity 11. The intermediate longitudinal beam 14 divides the battery installation cavity 11 into at least two installation areas 111. A battery module 112 is installed in the installation area 111. The battery module 112 is connected with an electrode copper bar, and the electrode copper bar extends into the electronic control installation cavity 12. At least one first connector 2 is provided at one end of the housing 1 where the battery installation cavity 11 faces away from the electronic control installation cavity 12. The electrode copper bar is electrically connected to the first connector 2 through a first copper bar 16. Among them, the first copper bar 16 includes a first positive copper bar 161 and a first negative copper bar 162. The first positive copper bar 161 and the first negative copper bar 162 are respectively electrically connected to the first connector 2. There are at least two intermediate longitudinal beams 14, and at least two intermediate longitudinal beams 14 are spaced apart along a second direction. The first positive copper bar 161 is arranged side by side with one of the intermediate longitudinal beams 14 in the up-down direction, and the first negative copper bar 162 is arranged side by side with the other intermediate longitudinal beam 14 in the up-down direction. The first direction intersects the second direction.

[0036] Specifically, the housing 1 serves as the external structure of the battery pack 100 and has a relatively large volume. It is used to install and protect the components inside the battery pack 100. That is, the components inside the battery pack 100 can be installed inside the housing 1, and the housing 1 can protect them to prevent damage and failure caused by accidental collisions. At the same time, a battery installation cavity 11 and an electronic control installation cavity 12 are formed inside the housing 1 and distributed along the first direction. The battery installation cavity 11 is used to install the battery module 112, and the electronic control installation cavity 12 is used to install electrical components. By distributing the battery installation cavity 11 and the electronic control installation cavity 12 along the first direction, the battery installation cavity 11 and the electronic control installation cavity 12 can be separated, and then the battery module 112 and the electrical components can be arranged separately to avoid interference between them, improving the reliability of the operation of the battery module 112 and the electrical components. Moreover, the battery module 112 and the electrical components can be arranged integrally inside the housing 1 to reduce the occupied space of the battery module 112 and the electrical components, improving the space utilization rate. Furthermore, the volume and weight of the housing 1 can be reduced, and the installation cost of the housing 1 can be lowered.

[0037] Among them, it should be noted that an intermediate cross beam 13 is provided inside the housing 1. The intermediate cross beam 13 is used to separate the battery installation cavity 11 and the electronic control installation cavity 12. And the housing 1 can be made of materials such as aluminum alloy or steel to improve the hardness of the housing 1, and then improve the reliability of the housing 1 to protect the components inside the battery pack 100.

[0038] At the same time, an intermediate longitudinal beam 14 is provided inside the battery installation cavity 11. The intermediate longitudinal beam 14 is used to divide the battery installation cavity 11 into at least two installation areas 111. The installation areas 111 are used to install the battery module 112 to realize the installation of the battery module 112 inside the housing 1, and then realize the energy storage function of the battery pack 100. Moreover, the intermediate longitudinal beam 14 can also separate the battery modules 112 located in different installation areas 111 to prevent the heat of one battery module 112 from spreading to adjacent battery modules 112 when a thermal runaway occurs, inhibiting the spread of thermal runaway. And the number of installation areas 111 can be two, three or more. Furthermore, the battery module 112 can be installed through at least two installation areas 111 at the same time, increasing the number of battery modules 112 installed, improving the capacity of the battery pack 100 and the endurance of the vehicle.

[0039] There are at least two intermediate longitudinal beams 14, that is, the number of the intermediate longitudinal beams 14 can be two, three or more. Further, the battery installation cavity 11 can be divided into at least two installation areas 111 by at least two intermediate longitudinal beams 14, and the at least two intermediate longitudinal beams 14 are spaced apart along the second direction. That is, the at least two intermediate longitudinal beams 14 can be arranged in parallel along the second direction, so that the at least two intermediate longitudinal beams 14 can divide the battery installation cavity 11 into at least three installation areas 111 along the second direction. Further, at least three installation areas 111 can be used to install the battery modules 112 at the same time, which can effectively increase the number of the battery modules 112 arranged, and improve the capacity of the battery pack 100 and the endurance of the vehicle.

[0040] Among them, it should be noted that, as Figure 2 shown, there are two intermediate longitudinal beams 14. The two intermediate longitudinal beams 14 divide the battery installation cavity 11 into three installation areas 111. The three installation areas 111 are arranged in sequence along the second direction. And a set of battery modules 112 are respectively arranged in the two installation areas 111 at both ends. Two sets of battery modules 112 are arranged in the installation area 111 in the middle. And a heat insulation pad 113 is arranged between the two sets of battery modules 112 in the installation area 111 in the middle. Thus, the four sets of battery modules 112 can be evenly spaced apart by the intermediate longitudinal beams 14 and the heat insulation pad 113, which can effectively inhibit the spread of thermal runaway.

[0041] Moreover, the housing 1 is provided with at least one first connector 2 at one end of the battery installation cavity 11 facing away from the electronic control installation cavity 12. The first connector 2 is used to connect with the motor to provide power for the vehicle. And the number of the first connectors 2 can be one, two or three, etc. When there is one first connector 2, the first connector 2 can be connected with the motor to provide power for the vehicle. When there are at least two first connectors 2, the battery pack 100 can be connected with at least two motors through the at least two first connectors 2 to provide precise torque control for the vehicle. At the same time, the battery module 112 is connected with an electrode copper bar. The electrode copper bar is used to output electric energy. The electrode copper bar is extended into the electronic control installation cavity 12. That is, the electrode copper bar can be extended from the battery installation cavity 11 into the electronic control installation cavity 12 to reduce the occupied space of the electrode copper bar in the battery installation cavity 11. Further, the battery installation cavity 11 can provide a larger space for the battery module 112 to further increase the number of the battery modules 112 arranged, and improve the capacity of the battery pack 100 and the endurance of the vehicle.

[0042] In the embodiment as Figures 1 - 2 shown, there is one first connector 2. That is, this one first connector 2 can be connected with the motor to provide power for the vehicle.

[0043] Moreover, the electrode copper bar is connected to the battery module 112 for outputting electric energy, and the electrode copper bar is electrically connected to the first copper bar 16 and the first connector 2. That is, the first copper bar 16 is used to connect the electrode copper bar and the first connector 2 for electric energy transmission. The first copper bar 16 is made of copper material, which has high conductivity and low resistivity, can greatly reduce the connection loss between the electrode copper bar and the first connector 2, and thus is beneficial to improving the overall efficiency of the battery pack 100. The first copper bar 16 includes a first positive copper bar 161 and a first negative copper bar 162, and the first positive copper bar 161 and the first negative copper bar 162 are respectively electrically connected to the first connector 2. That is, the electrode copper bar can be connected to the first connector 2 through the first positive copper bar 161 and the first negative copper bar 162 respectively to achieve reliable transmission of electric energy.

[0044] Arrange the first positive copper bar 161 side by side with one of the intermediate longitudinal beams 14, and arrange the first negative copper bar 162 side by side with the other intermediate longitudinal beam 14. Then, the first positive copper bar 161 and the first negative copper bar 162 can be respectively arranged side by side corresponding to one intermediate longitudinal beam 14, so that the occupied space of the first positive copper bar 161 and the first negative copper bar 162 in the horizontal direction can coincide with the corresponding intermediate longitudinal beam 14, which can reduce the additional installation space reserved for the first copper bar 16, effectively improve the space utilization rate, and reduce the volume and weight of the housing 1. Moreover, the first positive copper bar 161 and the first negative copper bar 162 can also be arranged at intervals to facilitate the distinction between the first positive copper bar 161 and the first negative copper bar 162 and ensure the correct connection of the first positive copper bar 161 and the first negative copper bar 162.

[0045] In addition, the battery installation cavity 11 and the electronic control installation cavity 12 are distributed along the first direction. The housing 1 is provided with the first connector 2 at one end of the battery installation cavity 11 facing away from the electronic control installation cavity 12, that is, the first connector 2 is arranged at the end of the housing 1 along the first direction. At the same time, at least two intermediate longitudinal beams 14 are distributed at intervals along the second direction, so that the intermediate longitudinal beams 14 can be configured to extend along the first direction to facilitate the first copper bar 16 to approach the first connector 2 for connection. The first direction intersects with the second direction, that is, there is a certain angle between the first direction and the second direction, which can avoid the parallelism of the first direction and the second direction resulting in an increase in the set length of the first copper bar 16 and further an increase in the set cost of the battery pack 100. Among them, the first direction can be one of the length direction and the width direction of the housing 1, and the second direction can be the other of the length direction and the width direction of the housing 1.

[0046] According to the battery pack 100 of an embodiment of the present invention, by forming a battery installation cavity 11 and an electronic control installation cavity 12 in the shell 1, the battery module 112 and the electrical components can be separated and arranged to ensure the reliability of their respective operations, and the battery module 112 and the electrical components can be neatly arranged in the shell 1 to improve space utilization, and the battery module 112 is connected to an electrode copper bus, and the electrode copper bus is electrically connected to the first connector 2 through the first copper bus 16 to provide power for the vehicle. At the same time, the battery installation cavity 11 is divided into at least two installation areas 111 by the intermediate longitudinal beam 14, which can increase the number of battery modules 112 set, improve the capacity of the battery pack 100 and the endurance of the vehicle, and the first positive copper bus 161 is distributed side by side with one of the intermediate longitudinal beams 14, and the first negative copper bus 162 is distributed side by side with the other intermediate longitudinal beam 14, which can reduce the additional installation space reserved for the first copper bus 16, further improve space utilization, effectively reduce the volume and weight of the shell 1, and reduce the setting cost of the shell 1.

[0047] In some embodiments, the electrode copper bar includes a total positive copper bar 151 and a total negative copper bar 152, the first positive copper bar 161 is connected between the total positive copper bar 151 and the first connector 2, and the first negative copper bar 162 is connected between the total negative copper bar 152 and the first connector 2.

[0048] Specifically, the electrode copper busbar is used to output electric energy. The electrode copper busbar includes a total positive copper busbar 151 and a total negative copper busbar 152. The total positive copper busbar 151 is used to output electric energy from the positive pole of the battery module 112, and the total negative copper busbar 152 is used to output electric energy from the negative pole of the battery module 112. The first positive copper busbar 161 is connected between the total positive copper busbar 151 and the first connector 2, that is, the first positive copper busbar 161 is used to transmit electric energy from the positive pole of the battery module 112, and the first negative copper busbar 162 is connected between the total negative copper busbar 152 and the first connector 2, that is, the first negative copper busbar 162 is used to transmit electric energy from the negative pole of the battery module 112. Therefore, electric energy can be transmitted from the positive pole and the negative pole of the battery module 112 respectively through the first positive copper busbar 161 and the first negative copper busbar 162, which can improve the reliability of electric energy transmission and thus improve the reliability of providing power to the vehicle.

[0049] In some embodiments, the first direction is along the length direction of the housing 1 , and the second direction is along the width direction of the housing 1 .

[0050] That is to say, the battery installation cavity 11 and the electronic control installation cavity 12 are distributed along the length direction of the housing 1, and the housing 1 is provided with a first connector 2 at one end of the battery installation cavity 11 facing away from the electronic control installation cavity 12, that is, the first connector 2 is arranged at the end of the housing 1 along the length direction. At the same time, the two intermediate longitudinal beams 14 are spaced apart along the width direction of the housing 1. Thus, the intermediate longitudinal beams 14 can be configured to extend along the length direction of the housing 1, and accordingly, the first copper bar 16 can be configured to extend along the length direction of the housing 1, so as to facilitate the first copper bar 16 to approach the first connector 2, and further facilitate the connection between the first copper bar 16 and the first connector 2, reduce the set length of the first copper bar 16, and thereby reduce the set cost of the battery pack 100.

[0051] Wherein, the first direction is along the length direction of the housing 1, and the second direction is along the width direction of the housing 1, that is, the first direction intersects and is perpendicular to the second direction, and as Figure 1 shown, the first direction is the front-back direction in the illustrated direction, and the second direction is the left-right direction in the illustrated direction.

[0052] In some embodiments, the battery pack 100 further includes a first fixing member 163, and the first fixing member 163 is used to detachably connect the first copper bar 16 to the intermediate longitudinal beam 14.

[0053] Specifically, the first copper bar 16 is used to connect the electrode copper bar and the first connector 2. In the battery pack 100, the first fixing member 163 is provided, and the first fixing member 163 is used to detachably connect the first copper bar 16 to the intermediate longitudinal beam 14. Thus, the first copper bar 16 can be fixed by the first fixing member 163 to prevent the first copper bar 16 from shaking due to the vibration of the vehicle, resulting in a reduction in the connection reliability between the electrode copper bar and the first connector 2. The reliability of the first copper bar 16 during operation can be improved by the first fixing member 163. Moreover, the first copper bar 16 and the intermediate longitudinal beam 14 are detachably connected, which facilitates the connection or separation between the first copper bar 16 and the intermediate longitudinal beam 14, and also facilitates the installation or disassembly of the first copper bar 16. Further, when the first copper bar 16 is installed, the first copper bar 16 can connect the electrode copper bar and the first connector 2 to output electric energy. When the first copper bar 16 is disassembled, the damaged first copper bar 16 can be replaced, which is beneficial to extending the service life of the battery pack 100.

[0054] In some embodiments, the first fixing member 163 is configured as a tie strap for threading through the first copper bar 16; and / or, a plurality of first fixing members 163 are provided, and the plurality of first fixing members 163 are spaced apart along the first direction on the intermediate longitudinal beam 14; and / or, the first fixing member 163 is arranged on the upper surface of the intermediate longitudinal beam 14.

[0055] Specifically, the first fixing member 163 is used to fix the first copper bar 16. The first fixing member 163 is constructed as a strap. The setting cost of the strap is low, which is conducive to reducing the setting cost of the battery pack 100. The strap can be a nylon strap or a stainless steel strap, etc., both of which can achieve reliable fixation of the first copper bar 16 and facilitate the installation or removal of the first copper bar 16. The nylon strap is relatively soft, which can prevent the first fixing member 163 and the first copper bar 16 from rubbing against each other, causing wear on the first copper bar 16, and thus can help extend the service life of the first copper bar 16. The stainless steel strap has high strength and high temperature resistance, which can prevent the first fixing member 163 from being damaged and failed under the action of the heat generated by the first copper bar 16 or the battery module 112, thereby extending the service life of the first fixing member 163. The material of the strap can be selected according to actual needs, which can improve the flexibility of the setting.

[0056] Furthermore, a plurality of first fixing members 163 are provided, that is, the number of first fixing members 163 provided can be two, three or more, and the first copper busbar 16 can be fixed simultaneously by a plurality of first fixing members 163, which can improve the reliability of fixing the first copper busbar 16, and the plurality of first fixing members 163 are distributed along the first direction at intervals on the middle longitudinal beam 14, that is, the plurality of first fixing members 163 are distributed along the extension direction of the first copper busbar 16 at intervals, so as to connect the first copper busbar 16 to the middle longitudinal beam 14 at multiple positions at the same time, which can improve the reliability and stability of fixing the first copper busbar 16.

[0057] Furthermore, by setting the first fixing member 163 on the upper surface of the middle longitudinal beam 14, the first copper busbar 16 can be set above the middle longitudinal beam 14, and the first copper busbar 16 can be set toward the user, so that the user can operate the first fixing member 163 to install or remove the first copper busbar 16, which can improve the convenience of operation.

[0058] In some embodiments, the battery pack 100 further includes an interlocking wire 4 . The interlocking wire 4 and the first copper bus 16 are distributed side by side on the middle longitudinal beam 14 and are both located between two adjacent mounting areas 111 .

[0059] Specifically, the interlock line 4 is used to monitor the physical connections of each module in the battery pack 100 in real time, ensure good contact, and avoid heating or arcing caused by loosening. By arranging the interlock line 4 and the first copper bar 16 between two adjacent installation areas 111, the two adjacent installation areas 111 can be separated by the interlock line 4 and the first copper bar 16, and thus the battery modules 112 located in the two adjacent installation areas 111 can be separated to inhibit the spread of thermal runaway. Moreover, by arranging the interlock line 4 and the first copper bar 16 side by side on the middle longitudinal beam 14, the interlock line 4 and the first copper bar 16 can be arranged side by side with the middle longitudinal beam 14 in the vertical direction, so that the occupied space of the interlock line 4, the first copper bar 16 and the middle longitudinal beam 14 coincides in the horizontal direction, thereby reducing the need to reserve additional installation space for the interlock line 4, further reducing the volume and weight of the housing 1, and lowering the installation cost of the housing 1.

[0060] Among them, it should be noted that, as Figures 2 - 3 shown, the interlock line 4 is connected to the battery module 112 and the battery management system 122 located in the electronic control installation cavity 12, etc. When the interlock line 4 detects an abnormality, the battery management system 122 will trigger a protection mechanism to avoid dangerous situations.

[0061] In some embodiments, the middle longitudinal beam 14 is provided with an installation bracket 41, and the interlock line 4 is passed through the installation bracket 41; among them, the installation bracket 41 is provided with a first fixing member 163, and the first fixing member 163 is used to pass through the first copper bar 16.

[0062] Specifically, the middle longitudinal beam 14 is provided with an installation bracket 41, so that the installation bracket 41 can be connected to the middle longitudinal beam 14 to fix the installation bracket 41 and ensure the reliable operation of the installation bracket 41. As Figure 4 shown, an installation hole 141 is provided on the middle longitudinal beam 14, and at least part of the installation bracket 41 can extend into the installation hole 141 to realize the connection between the installation bracket 41 and the middle longitudinal beam 14, and then the installation bracket 41 can be fixed.

[0063] At the same time, the interlock line 4 is passed through the installation bracket 41, so that the interlock line 4 can be fixed by the installation bracket 41 to prevent the interlock line 4 from shaking due to the vibration of the vehicle, resulting in a reduction in the reliability of its operation. As Figure 4 shown, the installation bracket 41 is formed with a card slot 411, and the interlock line 4 can be extended from one side of the card slot 411 to the other side and clamped in the card slot 411 to fix the interlock line 4, improve the reliability of the operation of the interlock line 4, and enable the interlock line 4 and the installation bracket 41 to be detachably connected, so as to facilitate the connection or separation of the two, that is, it is convenient to install or disassemble the interlock line 4, and further facilitate the replacement of the interlock line 4 when it is damaged and fails, which is beneficial to extending the service life of the battery pack 100.

[0064] Among them, the mounting bracket 41 is provided with a first fixing piece 163, that is, the mounting bracket 41 can be connected to the first fixing piece 163 to fix the first fixing piece 163, ensuring the reliable operation of the first fixing piece 163, and the first fixing piece 163 is used to pass the first copper busbar 16, that is, the first copper busbar 16 can be fixed by the first fixing piece 163 to avoid the first fixing piece 163 shaking due to the vibration of the vehicle, resulting in reduced working reliability.

[0065] Among them, it should be noted that the first copper busbar 16 is arranged above the middle longitudinal beam 14, that is, the first fixing member 163 can be arranged above the middle longitudinal beam 14, and the first fixing member 163 is arranged on the mounting bracket 41, that is, the mounting bracket 41 can be arranged between the middle longitudinal beam 14 and the first fixing member 163, and then the first fixing member 163, the mounting bracket 41 and the middle longitudinal beam 14 can be arranged in sequence along the up and down directions, that is, the first copper busbar 16, the interlocking wire 4 and the middle longitudinal beam 14 can be arranged in sequence along the up and down directions, so that the space occupied by the interlocking wire 4, the first copper busbar 16 and the middle longitudinal beam 14 in the horizontal direction overlap, which can help reduce the volume and weight of the shell 1, and at the same time, the first copper busbar 16 and the middle longitudinal beam 14 can protect the interlocking wire 4 from the upper and lower sides of the interlocking wire 4 respectively to avoid the interlocking wire 4 from rubbing against other components in the battery pack 100, which may cause damage and failure of the interlocking wire 4, and help extend the service life of the interlocking wire 4.

[0066] In some embodiments, the housing 1 is provided with at least one second connector 3 on a side of the electrical control installation cavity 12 facing away from the battery installation cavity 11 , and the electrode copper busbar is electrically connected to the second connector 3 via the second copper busbar 17 .

[0067] Specifically, the second connector 3 is used to connect to the motor to provide power for the vehicle, and the number of the second connectors 3 can be one, two or three, etc. When there is one second connector 3, the second connector 3 can be connected to the motor to provide power for the vehicle. When there are at least two second connectors 3, the battery pack 100 can be connected to at least two motors through at least two second connectors 3 to provide precise torque control for the vehicle. At the same time, the electrode copper bar is electrically connected to the second connector 3 through the second copper bar 17, that is, the second copper bar 17 is used to connect the electrode copper bar and the second connector 3 for power transmission. The second copper bar 17 is made of copper material. Copper has high conductivity and low resistivity, which can greatly reduce the connection loss between the electrode copper bar and the second connector 3, thereby helping to improve the overall efficiency of the battery pack 100.

[0068] In such Figures 1 - 3 In the embodiment shown, there is only one second connector 3 , and this one second connector 3 can be connected to the motor to provide power for the vehicle.

[0069] Among them, it should be noted that the first connector 2 is located on one side of the battery installation cavity 11 of the housing 1 away from the electronic control installation cavity 12, and the second connector 3 is located on one side of the electronic control installation cavity 12 of the housing 1 away from the battery installation cavity 11. Moreover, the battery installation cavity 11 and the electronic control installation cavity 12 are distributed along the length direction of the housing 1. Thus, the first connector 2 and the second connector 3 can be respectively arranged at the rear end and the front end of the housing 1 to space the first connector 2 and the second connector 3 apart, avoiding interference between the two and reducing the reliability of operation. Also, the first connector 2 and the second connector 3 can be respectively oriented closer to the motor for rear-wheel drive and the motor for front-wheel drive, facilitating the connection of the first connector 2 and the second connector 3 to the corresponding motors respectively.

[0070] In addition, during actual design, the first connector 2 and the second connector 3 can be connected according to actual needs. For example, when the current driving force is sufficient, the second connector 3 can be left unconnected, improving the flexibility of the battery pack 100 arrangement. Also, the second connector 3 can be used to charge the battery pack 100 to ensure that the battery pack 100 has sufficient power and improve the reliability of the battery pack 100 operation.

[0071] In some embodiments, the electrode copper busbar includes a total positive copper busbar 151 and a total negative copper busbar 152. Among them, the second copper busbar 17 includes a second positive copper busbar 171 and a second negative copper busbar 172. The second positive copper busbar 171 is connected between the total positive copper busbar 151 and the second connector 3, and the second negative copper busbar 172 is connected between the total negative copper busbar 152 and the second connector 3.

[0072] Specifically, the total positive copper busbar 151 is used to output electrical energy from the positive electrode of the battery module 112, and the total negative copper busbar 152 is used to output electrical energy from the negative electrode of the battery module 112. The second copper busbar 17 is connected between the electrode copper busbar and the second connector 3 for electrical energy transmission. The second copper busbar 17 includes a second positive copper busbar 171 and a second negative copper busbar 172. The second positive copper busbar 171 is connected between the total positive copper busbar 151 and the second connector 3, that is, the second positive copper busbar 171 is used to transmit electrical energy from the positive electrode of the battery module 112. The second negative copper busbar 172 is connected between the total negative copper busbar 152 and the second connector 3, that is, the second negative copper busbar 172 is used to transmit electrical energy from the negative electrode of the battery module 112. Thus, electrical energy can be transmitted respectively from the positive and negative electrodes of the battery module 112 through the second positive copper busbar 171 and the second negative copper busbar 172, improving the reliability of electrical energy transmission and further improving the reliability of providing power for the vehicle.

[0073] In some embodiments, the electrode copper busbar includes a total positive copper busbar 151 and a total negative copper busbar 152. A fuse 1211, a positive relay 1212, and a negative relay 1213 are installed in the electronic control installation cavity 12. A first connection part 1214 and a second connection part 1215 are further provided in the electronic control installation cavity 12. The first copper busbar 16 includes a first positive copper busbar 161 and a first negative copper busbar 162. The second copper busbar 17 includes a second positive copper busbar 171 and a second negative copper busbar 172. Among them, a fuse 1211 and a positive relay 1212 are connected between the first connection part 1214 and the total positive copper busbar 151. A negative relay 1213 is connected between the second connection part 1215 and the total negative copper busbar 152. The first positive copper busbar 161 is connected between the first connection part 1214 and the first connector 2. The second positive copper busbar 171 is connected between the first connection part 1214 and the second connector 3. The first negative copper busbar 162 is connected between the second connection part 1215 and the first connector 2. The second negative copper busbar 172 is connected between the second connection part 1215 and the second connector 3.

[0074] Specifically, the first positive copper busbar 161 is used to connect the total positive copper busbar 151 and the first connector 2, connect the first connection part 1214 to the total positive copper busbar 151, and connect the first positive copper busbar 161 between the first connection part 1214 and the first connector 2. In this way, the total positive copper busbar 151, the first connection part 1214, the first positive copper busbar 161, and the first connector 2 can be connected in series in sequence, so as to realize the connection between the total positive copper busbar 151 and the first connector 2. Moreover, the first negative copper busbar 162 is used to connect the total negative copper busbar 152 and the first connector 2, connect the second connection part 1215 to the total negative copper busbar 152, and connect the first negative copper busbar 162 between the second connection part 1215 and the first connector 2. In this way, the total negative copper busbar 152, the second connection part 1215, the first negative copper busbar 162, and the first connector 2 can be connected in series in sequence, so as to realize the connection between the total negative copper busbar 152 and the first connector 2. Furthermore, the electric energy of the battery module 112 can be transmitted to the first connector 2 to provide power for the vehicle.

[0075] Meanwhile, the second positive copper busbar 171 is used to connect the main positive copper busbar 151 and the second connector 3. The first connection part 1214 is connected to the main positive copper busbar 151, and the second positive copper busbar 171 is connected between the first connection part 1214 and the second connector 3. In this way, the main positive copper busbar 151, the first connection part 1214, the second positive copper busbar 171, and the second connector 3 can be connected in series in sequence, so as to realize the connection between the main positive copper busbar 151 and the second connector 3. Moreover, the second negative copper busbar 172 is used to connect the main negative copper busbar 152 and the second connector 3. The second connection part 1215 is connected to the main negative copper busbar 152, and the second negative copper busbar 172 is connected between the second connection part 1215 and the second connector 3. In this way, the main negative copper busbar 152, the second connection part 1215, the second negative copper busbar 172, and the second connector 3 can be connected in series in sequence, so as to realize the connection between the main negative copper busbar 152 and the second connector 3. Furthermore, the electric energy of the battery module 112 can be transmitted to the second connector 3 to provide power for the vehicle.

[0076] In addition, the fuse 1211 is used to cut off the circuit by its own melting when an abnormal overcurrent appears in the circuit, so as to protect the whole system from damage or fire risk. The positive relay 1212 and the negative relay 1213 are both used to control the conduction and disconnection of the circuit. Connecting the fuse 1211 and the positive relay 1212 between the main positive copper busbar 151 and the first connection part 1214 can connect the main positive copper busbar 151, the fuse 1211, the positive relay 1212, and the first connection part 1214 in series, and the whole system can be protected by the fuse 1211 to reduce the possibility of its damage or fire. The on-off of the positive circuit can be controlled by the positive relay 1212. When a fault occurs, the battery management system 122 will give priority to disconnecting the positive relay 1212 to quickly cut off the circuit. At the same time, connecting the negative relay 1213 between the main negative copper busbar 152 and the second connection part 1215 can control the on-off of the negative circuit by the negative relay 1213. When the positive relay 1212 fails, the negative relay 1213 can be disconnected to ensure the reliable disconnection of the circuit.

[0077] It should be noted that only setting the fuse 1211 in the positive circuit can reduce the system complexity, improve the reliability, reduce the number of fuses 1211, and reduce the setting cost of the battery pack 100. The fuse 1211, the positive relay 1212, and the negative relay 1213 are all arranged in the electronic control box 121, and the electronic control box 121 can protect the fuse 1211, the positive relay 1212, and the negative relay 1213 to avoid damage caused by collision and improve the reliability of their work.

[0078] In addition, it should be noted that, as Figures 1 - 3As shown, the shell 1 is further provided with an explosion-proof valve 5 on the side of the electronic control installation cavity 12 away from the battery installation cavity 11. The explosion-proof valve 5 is used to release pressure when the internal pressure of the battery pack 100 is too high to prevent the battery pack 100 from exploding, thereby improving the safety of the battery pack 100. There are two explosion-proof valves 5, which can improve the reliability and efficiency of pressure release and effectively reduce the risk of explosion of the battery pack 100. The two explosion-proof valves 5 and the second connector 3 are spaced apart and distributed to avoid interference between the three and improve the reliability of their respective operations. At the same time, a mounting part 6 is provided on the outside of the shell 1. The mounting part 6 is used to be connected to other components on the vehicle to realize the installation and fixation of the battery pack 100 on the vehicle. There are multiple mounting parts 6, and the multiple mounting parts 6 are spaced apart and distributed along the circumference of the shell 1. The battery pack 100 can be fixed at multiple positions at the same time by multiple mounting parts 6, which can improve the reliability and stability of fixing the battery pack 100.

[0079] Moreover, the battery pack 100 also includes a cover plate 7, which is used to be connected to the shell 1 to jointly protect the battery module 112 and electrical components, etc., which can improve the reliability of their protection, and the cover plate 7 and the shell 1 are detachably connected, such as by connecting the two with bolts or other connecting parts, which can facilitate the connection or separation of the cover plate 7 and the shell 1, and thus facilitate the installation or disassembly of the battery module 112 and electrical components, etc.

[0080] The present invention also provides a vehicle.

[0081] The vehicle according to an embodiment of the present invention includes a battery pack 100 according to any one of the above-mentioned embodiments. The battery installation cavity 11 and the electronic control installation cavity 12 are distributed along the first direction, so that the battery module 112 and the electrical components can be neatly arranged in the shell 1, thereby improving space utilization. The first positive copper busbar 161 is distributed side by side with one of the intermediate longitudinal beams 14, and the first negative copper busbar 162 is distributed side by side with another of the intermediate longitudinal beams 14, which can reduce the additional installation space reserved for the first copper busbar 16, further improve space utilization, effectively reduce the volume and weight of the shell 1, and reduce the setting cost of the shell 1. In addition, the first connector 2 is arranged at the end of the shell 1 along the first direction, and the first copper busbar 16 is extended along the first direction, which can facilitate the connection of the first copper busbar 16 with the first connector 2, reduce the setting length of the first copper busbar 16, and help reduce the setting cost of the battery pack 100.

[0082] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc., mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0083] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A battery pack, characterized in that, Comprising: A housing, within which a battery installation cavity and an electronic control installation cavity are formed and distributed along a first direction. An intermediate longitudinal beam is provided in the battery installation cavity, and the intermediate longitudinal beam divides the battery installation cavity into at least two installation regions. Battery modules are installed in the installation regions, and the battery modules are connected with electrode copper bars. The electrode copper bars extend into the electronic control installation cavity. The housing is provided with at least one first connector at one end of the battery installation cavity facing away from the electronic control installation cavity, and the electrode copper bars are electrically connected to the first connector through first copper bars; Wherein, the first copper bars include a first positive copper bar and a first negative copper bar. The first positive copper bar and the first negative copper bar are respectively electrically connected to the first connector. There are at least two intermediate longitudinal beams, and the at least two intermediate longitudinal beams are spaced apart along a second direction. The first positive copper bar is arranged side by side with one of the intermediate longitudinal beams in the up-down direction, and the first negative copper bar is arranged side by side with another one of the intermediate longitudinal beams in the up-down direction. The first direction intersects with the second direction.

2. The battery pack according to claim 1, wherein, The electrode copper bars include a total positive copper bar and a total negative copper bar. The first positive copper bar is connected between the total positive copper bar and the first connector, and the first negative copper bar is connected between the total negative copper bar and the first connector.

3. The battery pack according to claim 1, wherein, The first direction is along the length direction of the housing, and the second direction is along the width direction of the housing.

4. The battery pack according to claim 1, characterized in that, It further includes a first fixing member for detachably connecting the first copper bars to the intermediate longitudinal beam.

5. The battery pack according to claim 4, characterized in that, The first fixing member is configured as a strap for threading through the first copper bars; And / or, a plurality of the first fixing members are provided, and the plurality of first fixing members are spaced apart along the first direction on the intermediate longitudinal beam; And / or, the first fixing member is arranged on the upper surface of the intermediate longitudinal beam.

6. The battery pack according to claim 1, wherein It further includes an interlock wire, which is arranged side by side with the first copper bars on the intermediate longitudinal beam and is located between two adjacent installation regions.

7. The battery pack according to claim 6, wherein The intermediate longitudinal beam is provided with an installation bracket, and the interlock wire passes through the installation bracket; Wherein, the installation bracket is provided with a first fixing member for threading through the first copper bars.

8. The battery pack according to claim 1, characterized in that, The housing is provided with at least one second connector on the side of the electronic control installation cavity facing away from the battery installation cavity, and the electrode copper bars are electrically connected to the second connector through second copper bars.

9. The battery pack according to claim 8, wherein, The electrode copper bars include a total positive copper bar and a total negative copper bar; Wherein, the second copper bars include a second positive copper bar and a second negative copper bar. The second positive copper bar is connected between the total positive copper bar and the second connector, and the second negative copper bar is connected between the total negative copper bar and the second connector.

10. The battery pack according to claim 8, characterized in that, The electrode copper bars include a total positive copper bar and a total negative copper bar. A fuse, a positive relay and a negative relay are installed in the electronic control installation cavity. A first connection part and a second connection part are further provided in the electronic control installation cavity. The first copper bars include a first positive copper bar and a first negative copper bar. The second copper bars include a second positive copper bar and a second negative copper bar; Wherein, a fuse and a positive relay are connected between the first connecting portion and the total positive copper busbar, a negative relay is connected between the second connecting portion and the total negative copper busbar, the first positive copper busbar is connected between the first connecting portion and the first connector, the second positive copper busbar is connected between the first connecting portion and the second connector, the first negative copper busbar is connected between the second connecting portion and the first connector, and the second negative copper busbar is connected between the second connecting portion and the second connector.

11. A vehicle, characterized in that, Comprising the battery pack according to any one of claims 1-10.

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