Battery energy distribution unit, battery pack and vehicle

Abstract

The utility model provides a battery energy distribution unit, a battery pack and a vehicle, and relates to the technical field of new energy battery packs. According to the battery energy distribution unit, the shell with the mounting cavity is arranged, the control panel and the electronic device assembly are both arranged in the mounting cavity, the control panel is used for the battery management system to monitor the state parameters of the battery pack, and the control panel is further used for controlling opening and closing of the high-voltage electrical loop and the low-voltage electrical loop through the electronic device assembly. Meanwhile, the main positive relay and the fuse are connected through the connecting copper bar with the heat dissipation part, and the heat dissipation part faces the inner bottom wall of the mounting cavity and abuts against the inner bottom wall of the mounting cavity, so that heat dissipation is performed on the whole shell through the cold plate of the battery pack, which is equivalent to heat dissipation performed on the electronic component assembly through the heat dissipation part of the connecting copper bar; and the heat dissipation efficiency is improved, so that the heat dissipation performance of the battery energy distribution unit and the battery management system can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to new energy battery pack technology, and in particular to a battery energy distribution unit, a battery pack and a vehicle. BACKGROUND

[0002] The battery energy distribution unit and the battery management system are provided in the battery pack. The battery energy distribution unit is an important component in the high-voltage electrical circuit of the new energy vehicle. The battery management system is an important component for monitoring the running state of the battery pack, obtaining the state parameters of the battery pack, and effectively controlling the battery pack in the new energy vehicle.

[0003] At present, the battery energy distribution unit includes a shell, a plurality of electronic component assemblies arranged in the shell, and a high-voltage electrical circuit and a low-voltage control circuit connected to the electronic component assemblies. The battery management system includes a control board electrically connected to the battery energy distribution unit. In the prior art, the electronic component assemblies and the control board are mainly cooled by a heat dissipation copper bar.

[0004] However, under the large current working conditions such as fast charging or continuous acceleration and deceleration of the new energy vehicle, the heat dissipation capacity of the heat dissipation copper bar is limited, resulting in an increase in the temperature of the electronic component assemblies and the control board, which affects the service life and safety of the electronic component assemblies and the control board. CONTENT OF THE INVENTION

[0005] Therefore, the present application provides a battery energy distribution unit, a battery pack and a vehicle, which can improve the heat dissipation performance of the battery energy distribution unit and the battery management system.

[0006] To achieve the above-mentioned purpose, the present application provides a battery energy distribution unit, a battery pack and a vehicle, which adopt the following technical solutions:

[0007] In a first aspect, the present application provides a battery energy distribution unit arranged in a battery pack, comprising a shell, an electronic component assembly, a control board and at least one connecting copper bar.

[0008] The shell is connected to a cold plate of the battery pack.

[0009] The shell has a mounting cavity, and the control board is arranged at the top of the mounting cavity.

[0010] The electronic component assembly includes at least one of a main positive relay, a main negative relay and a fuse arranged in the mounting cavity.

[0011] The fuse is used to connect a positive electrode of the battery pack and is connected to the main positive relay through the connecting copper bar.

[0012] The connecting copper bar has a heat dissipation portion, and the heat dissipation portion is arranged towards the inner bottom wall of the mounting cavity and abuts against the inner bottom wall of the mounting cavity.

[0013] The control board is used for a battery management system to monitor state parameters of the battery pack; and the control board is also used for controlling on-off of the high-voltage electrical loop and the low-voltage control loop.

[0014] At least one of the main positive relay and the main negative relay is horizontally inserted on the control board and electrically connected with the control board.

[0015] In a possible implementation, the battery energy distribution unit provided in the present application, one of the main positive relay and the main negative relay includes a contact part and a magnetic circuit part connected with the contact part.

[0016] The magnetic circuit part is arranged towards the side wall of the mounting cavity.

[0017] In a possible implementation, the battery energy distribution unit provided in the present application further includes at least one connecting assembly.

[0018] The connecting assembly includes a connecting part connected with the control board and a clamping part arranged on the connecting part (610).

[0019] Each of the main positive relay and the main negative relay has at least one plug-in connector.

[0020] The clamping part is used for clamping the plug-in connector.

[0021] In a possible implementation, the battery energy distribution unit provided in the present application further includes at least one heat-conducting piece.

[0022] The heat-conducting piece is arranged between the bottom side of the shell and the top surface of the cold plate, and opposite sides of the heat-conducting piece respectively abut against the shell and the cold plate.

[0023] The heat-conducting piece is configured to conduct heat of the shell to the cold plate to dissipate heat of the shell.

[0024] In a possible implementation, the battery energy distribution unit provided in the present application further includes an insulating pad arranged between the connecting copper bar and the heat-conducting piece, and opposite sides of the insulating pad respectively abut against the connecting copper bar and the heat-conducting piece.

[0025] In a possible implementation, the battery energy distribution unit provided in the present application, the shell includes a first shell and a second shell.

[0026] The first shell is connected with the cold plate, and the second shell is arranged on the first shell, and the first shell and the second shell together enclose the mounting cavity.

[0027] In a possible implementation, the battery energy distribution unit provided in the present application has at least one first clamping piece on one of the first shell and the second shell, and at least one second clamping piece on the other one.

[0028] The first clamping piece and the second clamping piece are in one-to-one correspondence.

[0029] In a possible implementation, the battery energy distribution unit provided in the present application has at least one heat-conducting hole opened on the side of the first shell facing the cold plate.

[0030] The heat-conducting piece abuts against the heat-dissipating part through the heat-conducting hole.

[0031] In a second aspect, the present application provides a battery pack, which comprises a battery pack body and the above-mentioned battery energy distribution unit; the battery pack body is connected with the battery energy distribution unit.

[0032] In a third aspect, the present application provides a vehicle, which comprises a vehicle body and the above-mentioned battery pack arranged on the vehicle body.

[0033] The battery energy distribution unit provided in the present application has the following advantages. The control board and the electronic component assembly are arranged in the mounting cavity of the shell, the electronic component assembly is electrically connected with the control board, the electronic component assembly is used for electrical connection with the high-voltage circuit and the low-voltage control circuit, the control board is used for the battery management system to monitor the state parameters of the battery pack, and the control board is also used for controlling the opening and closing of the high-voltage circuit and the low-voltage control circuit, so as to realize the integration of the new energy automobile battery energy distribution unit and the battery management system in the shell. Meanwhile, the main positive relay and the main negative relay are horizontally inserted on the control board and electrically connected with the control board, and the main positive relay and the fuse are connected through the connection copper bar with the heat-dissipating part, the heat-dissipating part is arranged towards the inner bottom wall of the mounting cavity and abuts against the inner bottom wall of the mounting cavity, so that the cold plate of the battery pack is used for heat dissipation of the whole shell, which is equivalent to heat dissipation of the electronic component assembly through the heat-dissipating part of the connection copper bar, thereby improving the heat dissipation efficiency and further improving the heat dissipation performance of the battery energy distribution unit and the battery management system.

[0034] In addition to the technical problems solved by the embodiments of the present application described above, the technical features constituting the technical solutions and the beneficial effects brought by these technical features, other technical problems solved by the technical solutions provided in the present application, other technical features included in the technical solutions and the beneficial effects brought by these technical features will be further described in detail in the specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0035] The specific embodiments of the present application are described in detail below with reference to the accompanying drawings, it should be understood that the specific embodiments described herein are merely intended for explanation and illustration of the present application, and the present application is not limited to the specific embodiments described below.

[0036] Figure 1 A partial structural schematic diagram of a battery energy distribution unit and a battery pack provided by an embodiment of the present application is shown in FIG. 1.

[0037] Figure 2 A partial structural schematic diagram of a battery energy distribution unit and a battery pack provided by an embodiment of the present application is shown in FIG. 1. Figure 1 A partial structural schematic diagram of a battery energy distribution unit and a battery pack provided by an embodiment of the present application is shown in FIG. 1.

[0038] Figure 3 A partial structural schematic diagram of a battery energy distribution unit and a battery pack provided by an embodiment of the present application is shown in FIG. 1. Figure 2 A partial structural schematic diagram of a battery energy distribution unit and a battery pack provided by an embodiment of the present application is shown in FIG. 1. A partial structural schematic diagram of a battery energy distribution unit and a battery pack provided by an embodiment of the present application is shown in FIG. 1.

[0039] A partial structural schematic diagram of a battery energy distribution unit and a battery pack provided by an embodiment of the present application is shown in FIG. 1. Figure 4 A partial structural schematic diagram of a battery energy distribution unit and a battery pack provided by an embodiment of the present application is shown in FIG. 1. Figure 2 A partial structural schematic diagram of a battery energy distribution unit and a battery pack provided by an embodiment of the present application is shown in FIG. 1. A partial structural schematic diagram of a battery energy distribution unit and a battery pack provided by an embodiment of the present application is shown in FIG. 1.

[0040] A partial structural schematic diagram of a battery energy distribution unit and a battery pack provided by an embodiment of the present application is shown in FIG. 1. Figure 5 A partial structural schematic diagram of a battery energy distribution unit and a battery pack provided by an embodiment of the present application is shown in FIG. 1.

[0041] Legend of reference signs:

[0042] 10, mounting cavity;

[0043] 100, housing; 110, first housing; 111, first clamping member; 112, heat-conducting hole; 120, second housing; 121, second clamping member; 200, electronic device assembly; 210, main positive relay; 211, contact portion; 212, magnetic circuit portion; 220, main negative relay; 230, plug-in member; 240, fuse; 250, connecting copper bar; 251, heat dissipation portion; 300, control board; 400, heat-conducting member; 500, cold plate; 600, connecting assembly; 700, battery pack body; 800, insulating pad.

[0044] The specific embodiments of the present application are described in detail above with reference to the accompanying drawings, it should be understood that the specific embodiments described herein are merely intended for explanation and illustration of the present application, and the present application is not limited to the specific embodiments described below. DETAILED DESCRIPTION

[0045] In order to make the objects, technical solutions and advantages of the present application clearer, the following will be combined with the drawings of the preferred embodiments of the present application to make the technical solutions in the embodiments of the present application more clearly described. In the drawings, the same or similar notations represent the same or similar parts or parts having the same or similar functions throughout. The described embodiments are part of the embodiments of the present application, rather than all the embodiments. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application. The embodiments of the present application will be described in detail below with reference to the drawings.

[0046] In the description of the embodiments of the present application, it should be noted that, unless explicitly defined and limited, the terms "mount", "connect", "connection" should be understood in a broad sense, for example, can be fixedly connected, can be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0047] In the description of the embodiments of the present application, it should be understood that the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0048] In the description of the embodiments of the present application, the meaning of "multiple" is two or more, unless otherwise explicitly specified.

[0049] The terms "first", "second", "third", "fourth" and the like in the specification and claims of the present application and the above drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or sequence.

[0050] In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not have to be limited to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to the process, method, product or device.

[0051] As described in the background, in the related art, the battery energy distribution unit and the battery management system of the new energy vehicle battery pack generate a large amount of heat during operation, which will react on the internal electronic devices, causing the temperature of the electronic devices to rise and even be damaged, affecting the normal operation of the electronic devices.

[0052] In a conventional setting mode, a heat dissipation copper bar abutting against the control panel and the electronic device assembly is arranged to dissipate heat by air convection, however, the heat dissipation efficiency of the heat dissipation copper bar is low and the heat dissipation capacity is limited, and the heat dissipation effect is poor. When the new energy vehicle is in a large current working condition such as fast charging or continuous acceleration and deceleration, the temperature of the electronic device assembly and the control panel will continue to rise, affecting the service life and safety of the electronic device assembly and the control panel.

[0053] Based on the above technical problems, the embodiments of the present application provide a battery energy distribution unit, a battery pack and a vehicle. In the technical solution, a housing with a mounting cavity is arranged, the control panel and the electronic device assembly are arranged in the mounting cavity, the electronic device assembly is electrically connected with the control panel, the electronic device assembly is used to be electrically connected with the high-voltage electrical circuit and the low-voltage control circuit, the control panel is used for the battery management system to monitor the state parameters of the battery pack, and the control panel is also used to control the opening and closing of the high-voltage electrical circuit and the low-voltage control circuit. In this way, the new energy vehicle battery energy distribution unit and the battery management system are integrated in the housing. At the same time, the main positive relay and the main negative relay are horizontally inserted on the control panel and electrically connected with the control panel, and the main positive relay and the fuse are connected through the connection copper bar with the heat dissipation part, and the heat dissipation part is arranged towards the inner bottom wall of the mounting cavity and abuts against the inner bottom wall of the mounting cavity. In this way, the cold plate of the battery pack is used to dissipate heat of the entire housing, which is equivalent to dissipating heat of the electronic device assembly through the heat dissipation part of the connection copper bar, thereby improving the heat dissipation efficiency and further improving the heat dissipation performance of the battery energy distribution unit and the battery management system.

[0054] It should be noted that, Figures 1 to 5 The schematic diagram of the battery energy distribution unit, the battery pack and the vehicle is shown, and the specific structure of the remaining parts of the battery energy distribution unit, the battery pack and the vehicle is not limited to Figures 1 to 5 The example.

[0055] The present application will be described in detail below in conjunction with the drawings and specific embodiments:

[0056] Referring to Figure 1 , Figure 2 , Figure 3 and Figure 4 , the embodiments of the present application provide a battery energy distribution unit arranged in a battery pack, comprising a housing 100, an electronic device assembly 200 and a control panel 300.

[0057] The shell 100 is connected with the top surface of the cold plate 500 of the battery pack. In the related art, the battery pack has a plurality of battery cells (not shown in the figure), and the battery cells generate a large amount of heat when working. In order to dissipate the heat of the battery cells in time, the cold plate 500 is laid at the bottom of the battery pack. The cold plate 500 can effectively remove the heat of the battery cells through physical contact, so that the battery cells can maintain the optimal temperature. The specific structure of the cold plate 500 is not limited in the embodiment of the application.

[0058] The shell 100 has a mounting cavity 10, and the control board 300 is arranged in the mounting cavity 10.

[0059] The electronic device assembly 200 includes at least one of a main positive relay 210 and a main negative relay 220 arranged in the mounting cavity 10, and the main positive relay 210 and the main negative relay 220 are used to be electrically connected with a high-voltage electrical circuit and a low-voltage control circuit.

[0060] The control board 300 is used for a battery management system to monitor the state parameters of the battery pack.

[0061] The control board 300 is also used to control the on-off of the high-voltage electrical circuit and the low-voltage control circuit.

[0062] Through the above arrangement, the battery management system can be integrated into the battery energy distribution unit, the functions are concentrated, and the overall installation is facilitated.

[0063] At least one of the main positive relay 210 and the main negative relay 220 is horizontally inserted on the control board 300 and electrically connected with the control board 300.

[0064] At least one connecting copper bar 250 is further included, and the electronic device assembly 200 further includes a fuse 240, which is used to be connected with the positive electrode of the battery pack and connected with the main positive relay 210 through the connecting copper bar 250.

[0065] The connecting copper bar 250 has a heat dissipation portion 251, and the heat dissipation portion 251 is arranged towards the inner bottom wall of the mounting cavity 10 and abuts against the inner bottom wall of the mounting cavity 10.

[0066] In the above embodiment, the main positive relay 210 and the main negative relay 220 are horizontally inserted on the control board 300 and electrically connected with the control board 300, which can facilitate the connection of the main positive relay 210 and the main negative relay 220 with the control board 300 and further facilitate the integration. At the same time, the main positive relay 210 and the main negative relay 220 are horizontally inserted on the control board 300, so that the conductive ends of the main positive relay 210 and the main negative relay 220 are arranged towards the inner side wall of the shell. In the environment with large temperature difference, the condensation on the inner wall of the battery pack can be prevented from dropping on the conductive ends, so that the normal work is not affected, and the main positive relay 210 and the main negative relay 220 are protected to a certain extent.

[0067] In this way, the cold plate 500 on the battery pack is used to dissipate heat from the shell 100, and through the heat dissipation part 251 of the connecting copper bar 250, the battery energy distribution unit and the battery management system are simultaneously cooled, and the electronic component 200 and the control board 300 are indirectly cooled, thereby improving the heat dissipation efficiency, and further improving the heat dissipation performance of the battery energy distribution unit and the battery management system.

[0068] In one possible implementation, one of the main positive relay 210 and the main negative relay 220 includes a contact part 211 and a magnetic circuit part 212 connected to the contact part 211.

[0069] The magnetic circuit part 212 is arranged towards the side wall of the mounting cavity 10.

[0070] Here, the magnetic circuit part 212 is the conductive end of the relay, and in the working process, heat will be generated due to the resistance. It can be understood that arranging the magnetic circuit part 212 towards the side wall of the mounting cavity 10 can quickly conduct the heat generated by the magnetic circuit part 212 to the shell 100, and then dissipate heat from the shell 100, which is equivalent to quickly dissipating heat from the magnetic circuit part 212.

[0071] Referring to Figure 4 The connecting copper bar 250 is connected to the magnetic circuit part 212 of the main positive relay 210, and the magnetic circuit part 212 of the main positive relay 210 serves as the conductive end of the main positive relay 210 and generates a large amount of heat during operation. This heat is conducted to the connecting copper bar 250, and by providing the heat dissipation part 251, the heat dissipation area of the connecting copper bar 250 is increased. After the connecting copper bar 250 quickly absorbs the heat generated by the magnetic circuit part 212 of the main positive relay 210, the heat is conducted to the shell 100 through the heat dissipation part 251, which is equivalent to improving the heat conduction efficiency between the magnetic circuit part 212 and the shell 100, and further achieving rapid heat dissipation of the magnetic circuit part 212 of the main positive relay 210.

[0072] Further, the electronic component 200 further includes a shunt and other electronic devices, the number of connecting copper bars 250 is at least two, the connecting copper bars 250 are connected to the shunt and the main negative relay 220, and the shunt is electrically connected to the negative electrode of the battery pack through the connecting copper bars 250. In order to further improve the heat dissipation efficiency, the heat dissipation part 251 is arranged on each connecting copper bar 250 to increase the contact area with the shell 100, and further achieve rapid heat conduction and heat dissipation.

[0073] In one possible implementation, referring to Figure 5 At least one connecting assembly 600 is further included, and each of the main positive relay 210 and the main negative relay 220 has at least one plug-in part 230.

[0074] The connecting assembly 600 is connected with the control panel 300, and the plug-in part 230 is used to be inserted into the connecting assembly 600, so that the main positive relay 210 and the main negative relay 220 are electrically connected with the control panel 300.

[0075] In the embodiment, the connecting assembly 600 includes a connecting part 610 connected with the control panel 300 and a clamping part 620 arranged on the connecting part 610. In the related technical field, the connecting part 610 can be electrically connected with the control panel 300 by welding. The clamping part 620 includes at least two oppositely arranged elastic sheets 621. The plug-in part 230 can be inserted between the two elastic sheets 621. On the one hand, the plug-in part 230 can be electrically connected with the control panel 300 through the elastic sheets 621 and the connecting part 610. On the other hand, the two oppositely arranged elastic sheets 621 can clamp the plug-in part 230 tightly, thereby improving the connection precision and stability.

[0076] Of course, in order to improve the connection stability, the number of the plug-in parts 230 on the main positive relay 210 and the main negative relay 220 is set to be at least two, and the connecting assembly 600 corresponds to each plug-in part 230.

[0077] In the above embodiment, the main positive relay 210 and the main negative relay 220 are related technologies in the field. The main positive relay 210 and the main negative relay 220 are electrically connected with the high-voltage circuit and the low-voltage control circuit to control the opening and closing of the high-voltage circuit and the low-voltage control circuit. The connecting assembly 600 is arranged on the control panel 300. The main positive relay 210 and the main negative relay 220 are inserted with the connecting assembly 600 through the plug-in part 230, so that the main positive relay 210 and the main negative relay 220 are electrically connected with the control panel 300. The main positive relay 210 and the main negative relay 220 are free from the wire harness for the electrical connection with the control panel 300, which makes the installation convenient and the integration high.

[0078] The battery management system (BMS) is used to intelligently manage and maintain each battery cell, monitor the state of the battery, prevent overcharging and overdischarging of the battery, and prolong the service life of the battery.

[0079] The battery energy distribution unit (BDU) controls the power-on and power-off process, the pre-charging process, and the charging process of the high-voltage circuit. Whether the characteristic parameters of the BDU product meet the qualified conditions has an important influence on the service life, control strategy, and high-voltage safety of the vehicle.

[0080] In the above embodiment, by integrating the BMS with the BDU, a BDU with BMS function, i.e., a BDMU (Battery energy Distribution Management Unit) is formed.

[0081] And by setting the connecting assembly 600, the electronic component assembly 200 and the control panel 300 are plugged, so that the wire harness for electrically connecting the electronic component assembly 200 and the control panel 300 can be omitted, the assembly of the electronic component assembly 200 and the control panel 300 is facilitated, and during the later maintenance, the maintenance is facilitated due to the omission of the wire harness.

[0082] In a possible embodiment, in order to improve the heat conduction and heat dissipation efficiency of the shell 100, a heat conduction member 400 is further included.

[0083] The heat conduction member 400 is arranged between the bottom side of the shell 100 and the top surface of the cold plate 500, and the opposite sides of the heat conduction member 400 abut against the shell 100 and the cold plate 500, respectively.

[0084] The heat conduction member 400 is configured to conduct the heat of the shell 100 to the cold plate 500 to dissipate the heat of the shell 100.

[0085] In the above embodiment, the heat generated in the shell 100 is first conducted to heat the shell 100, and then the shell 100 conducts the heat to the cold plate 500 through the heat conduction member 400 to dissipate the heat of the shell 100. The heat conduction member 400 can improve the heat conduction efficiency between the shell 100 and the cold plate 500, and thus improve the heat dissipation efficiency of the shell 100.

[0086] In a possible embodiment, in order to further improve the safety of the connecting copper bar 250 and prevent short circuit, an insulating pad 800 is further included, which is arranged between the connecting copper bar 250 and the heat conduction member 400, and the opposite sides of the insulating pad 800 abut against the connecting copper bar 250 and the heat conduction member 400, respectively. Specifically, the insulating pad 800 is arranged between the heat dissipation part 251 and the heat conduction member 400.

[0087] The insulating pad 800 can be an insulating rubber pad, and the thickness is selected to be 2-6 mm. Without affecting the heat conduction, the connecting copper bar 250 can be better protected from short circuit, and the safe use of the connecting copper bar 250 is protected. Here, the thickness of the insulating pad 800 can be selected according to actual needs, and the present application embodiment does not make too many limitations.

[0088] In a possible embodiment, in order to facilitate the processing and assembly of the shell 100, the shell 100 includes a first shell 110 and a second shell 120.

[0089] The first shell 110 is connected with the cold plate 500, and the second shell 120 is arranged on the first shell 110, and the first shell 110 and the second shell 120 jointly enclose the mounting cavity 10.

[0090] In this way, by arranging the first shell 110 and the second shell 120 in a covering manner, the mounting cavity 10 can be conveniently opened and closed, and then the parts inside the mounting cavity 10 can be conveniently installed and maintained, and the installation efficiency of the shell 100 is improved.

[0091] One of the first shell 110 and the second shell 120 has at least one first clamping piece 111, and the other has at least one second clamping piece 121.

[0092] The first clamping piece 111 and the second clamping piece 121 are one-to-one corresponding clamping.

[0093] In this way, by clamping of the first clamping piece 111 and the second clamping piece 121, the detachable connection of the first shell 110 and the second shell 120 can be quickly realized, the assembly efficiency of the shell 100 is improved, and in specific implementation, one of the first clamping piece 111 and the second clamping piece 121 is a clamping ring, and the other is a clamping head, which is inserted into the clamping ring. Of course, there can be another form of realizing one-to-one corresponding clamping of the first clamping piece 111 and the second clamping piece 121, and the present application embodiment does not limit this.

[0094] Figure 2 And Figure 4 The first shell 110 has a plurality of first clamping pieces 111, the first clamping piece 111 is a clamping head, the second shell 120 has a plurality of second clamping pieces 121 corresponding thereto, and the second clamping piece 121 is a clamping ring.

[0095] In a possible implementation, referring to Figure 3 And Figure 4 The first shell 110 is provided with at least one heat conduction hole 112 on the side facing the cold plate 500.

[0096] The heat conduction piece 400 abuts against the heat dissipation part 251 through the heat conduction hole 112.

[0097] Here, by arranging the heat conduction hole 112, the heat conduction piece 400 can abut against the heat dissipation part 251 through the heat conduction hole 112, and the heat on the heat dissipation part 251 is first conducted to the heat conduction piece 400, and then conducted to the cold plate 500 for elimination. Here, the heat conduction hole 112 can realize the direct contact of the heat dissipation part 251 and the heat conduction piece 400, and can further improve the heat conduction efficiency, and then improve the heat dissipation effect of the heat dissipation part 251.

[0098] In the above embodiment, the heat-conducting member 400 is one of a heat-conducting pad and a heat-conducting gel. The heat-conducting pad has good heat-conducting ability and high pressure resistance, and has good flexibility, can be well attached to the heat-dissipating part 251, and thus good heat conduction can be achieved. The heat-conducting gel has good thixotropy, can fill large gaps, has a higher heat-conducting rate than the heat-conducting pad, and has certain insulation, which can improve the safety of the heat-dissipating part 251. Here, the heat-conducting member 400 can be selected according to actual needs.

[0099] The embodiment of the present application also provides a battery pack, which comprises a battery pack body 700 and the above battery energy distribution unit arranged in the battery pack body 700.

[0100] The specific structure of the battery energy distribution unit has been described above, and thus is not described herein. The battery pack body 700 is prior art in the related technical field, and can be understood as that the battery energy distribution unit provided by the present application can be applied to any battery pack body 700.

[0101] By using the above battery energy distribution unit in the battery pack, the battery energy distribution unit can be well cooled, and the normal work of the components can be ensured. Meanwhile, the integration of the components in the battery pack can be improved, the space inside the battery pack can be fully utilized, and thus more space can be saved for installing the battery cells, so as to expand the capacity of the battery pack body 700.

[0102] The embodiment of the present application also provides a vehicle, which comprises a vehicle body and the above battery pack arranged on the vehicle body.

[0103] The implementation principle of the battery energy distribution unit, the battery pack and the vehicle provided by the embodiment of the application is as follows: the control board 300 and the electronic device assembly 200 are arranged in the mounting cavity 10 of the shell 100, the electronic device assembly 200 is electrically connected with the control board 300, the electronic device assembly 200 is used for being electrically connected with a high-voltage circuit and a low-voltage control circuit, the control board 300 is used for a battery management system to monitor state parameters of the battery pack, and the control board 300 is also used for controlling opening and closing of the high-voltage circuit and the low-voltage control circuit, so that the new energy automobile battery energy distribution unit and the battery management system are integrated in the shell 100, the main positive relay 210 and the main negative relay 220 are horizontally inserted on the control board 300 and are electrically connected with the control board 300, and the main positive relay 210 and the fuse 240 are connected through the connecting copper bar 250 with the heat dissipation part 251, the heat dissipation part 251 is arranged towards the inner bottom wall of the mounting cavity 10 and abuts against the inner bottom wall of the mounting cavity 10, so that the cold plate 500 of the battery pack is used for heat dissipation of the entire shell 100, which is equivalent to heat dissipation of the electronic device assembly 200 through the heat dissipation part 251 of the connecting copper bar 250, the heat dissipation efficiency is improved, and the heat dissipation performance of the battery energy distribution unit and the battery management system is further improved.

[0104] Other embodiments of the application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein.

[0105] It is intended to include all such variations and modifications in connection with the principles of the application as can be desired by the skilled person to adapt the application for particular applications. The specification and examples given are intended as illustrative only and not limiting of the true scope and spirit of the application as set forth in the claims.

[0106] It is to be understood that the application is not limited to the precise construction described and as shown in the attached drawings, and that various modifications and changes can be made by those skilled in the art without departing from the scope of the application. The scope of the application is to be limited only by the appended claims.

Claims

1. A battery energy distribution unit, used for installation within a battery pack, characterized in that, The application relates to a battery pack cooling system, which comprises a shell (100), an electronic device assembly (200), a control board (300) and at least one connecting copper bar (250). The shell (100) is connected with a cold plate (500) of the battery pack. The shell (100) has a mounting cavity (10) therein, and the control board (300) is arranged at the top of the mounting cavity (10). The electronic device assembly (200) comprises at least one of a main positive relay (210), a main negative relay (220) and a fuse (240) arranged in the mounting cavity (10). The fuse (240) is used for connecting a positive electrode of the battery pack and is connected with the main positive relay (210) through the connecting copper bar (250). The connecting copper bar (250) has a heat dissipation part (251) arranged on the connecting copper bar (250) and abutting against the inner bottom wall of the mounting cavity (10). The control board (300) is used for a battery management system to monitor state parameters of the battery pack, and the control board (300) is also used for controlling on-off of a high-voltage electric circuit and a low-voltage control circuit. At least one of the main positive relay (210) and the main negative relay (220) is horizontally inserted on the control board (300) and is electrically connected with the control board (300). One of the main positive relay (210) and the main negative relay (220) comprises a contact part (211) and a magnetic circuit part (212) connected with the contact part (211).

2. The battery energy distribution unit of claim 1, wherein, The magnetic circuit part (212) is arranged towards the side wall of the mounting cavity (10). The application further comprises at least one connecting assembly (600).

3. The battery energy distribution unit of claim 1, wherein, The connecting assembly (600) comprises a connecting part (610) connected with the control board (300) and a clamping part (620) arranged on the connecting part (610). The main positive relay (210) and the main negative relay (220) each have at least one plug (230) arranged thereon. The clamping part (620) is used for clamping the plug (230). The application further comprises at least one heat conduction piece (400).

4. The battery energy distribution unit of claim 3, wherein, The heat conduction piece (400) is arranged between the bottom side of the shell (100) and the top surface of the cold plate (500), and opposite sides of the heat conduction piece (400) abut against the shell (100) and the cold plate (500) respectively. The heat conduction piece (400) is configured to conduct heat of the shell (100) to the cold plate (500) to dissipate heat of the shell (100). The application further comprises an insulating pad (800) arranged between the connecting copper bar (250) and the heat conduction piece (400), and opposite sides of the insulating pad (800) abut against the connecting copper bar (250) and the heat conduction piece (400) respectively.

5. The battery energy distribution unit of claim 4, wherein, The shell (100) comprises a first shell (110) and a second shell (120).

6. The battery energy distribution unit of claim 4, wherein, ​ The first shell (110) is connected with the cold plate (500), the second shell (120) is arranged on the first shell (110), and the first shell (110) and the second shell (120) jointly define the mounting cavity (10).

7. The battery energy distribution unit of claim 6, wherein, At least one first clamping piece (111) is arranged on one of the first shell (110) and the second shell (120), and at least one second clamping piece (121) is arranged on the other one; The first clamping piece (111) and the second clamping piece (121) correspondingly clamp each other.

8. The battery energy distribution unit of claim 6, wherein, At least one heat conduction hole (112) is arranged on the side of the first shell (110) facing the cold plate (500); The heat dissipation part (251) transmits heat to the heat conduction piece (400) through the heat conduction hole (112).

9. A battery pack, characterized by, The battery energy distribution unit is arranged on the battery pack body (700).

10. A vehicle characterized by comprising: The battery pack is arranged on the vehicle body.

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