Battery pack and electric equipment

Abstract

The embodiment of the invention provides a battery pack and electric equipment, and relates to the technical field of battery packs, the battery pack comprises a beam assembly and a plurality of battery modules, and the beam assembly is provided with at least one mounting groove and a first discharge channel. The battery modules are respectively arranged on at least one side of the beam assembly, and each battery module is provided with a circuit connecting piece and a discharge port. The circuit connecting pieces of all the battery modules are gathered in the mounting groove, and all the discharge ports are communicated with the first discharge channel. According to the battery pack provided by the embodiment of the invention, the voltage and the capacity of the battery pack are adjusted by increasing or decreasing the number of the battery modules, the application range is wider, meanwhile, circuit wiring and exhaust are separated, the risk that a circuit breaks down is greatly reduced, and the safety of the battery pack is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery pack, and particularly relates to a battery pack and an electric equipment. BACKGROUND

[0002] At present, a battery pack can store and provide electric energy, and is therefore widely applied to electric equipment such as new energy vehicles and energy storage power stations.

[0003] In the related art, a plurality of batteries are stacked in the same direction and form a battery group through series and parallel connection, and the battery group is packaged into a battery pack.

[0004] However, for electric equipment with different voltage and capacity requirements, different sizes of the battery pack need to be developed. Due to the different number of battery cells, the plastic parts, high and low voltage wiring and the like in the battery pack need to be redeveloped, which is of many types, high cost and long cycle. Therefore, the existing battery pack is difficult to be applied to different voltage and capacity requirements. SUMMARY

[0005] Therefore, the present application provides a battery pack and an electric equipment, which aims to adjust the voltage and capacity of the battery pack by increasing or decreasing the number of battery modules, and simultaneously manages the circuit wiring and exhaust to ensure the safety of the battery pack.

[0006] In a first aspect, the present application provides a battery pack, comprising a beam assembly and a plurality of battery modules, the beam assembly having at least one mounting slot and a first exhaust passage;

[0007] Each battery module is arranged on at least one side of the beam assembly, and the battery module has a circuit connecting piece and an exhaust port.

[0008] The circuit connecting pieces of each battery module are collected in the mounting slot, and each exhaust port is in communication with the first exhaust passage.

[0009] In a possible implementation, the at least one mounting slot comprises a first mounting slot and a second mounting slot, and the circuit connecting piece comprises a low-voltage connecting piece and a high-voltage leading piece.

[0010] The low-voltage connecting pieces of each battery module are collected in the first mounting slot, and the high-voltage leading pieces are collected in the second mounting slot.

[0011] In a possible implementation, the beam assembly comprises a first beam and a second beam, the first mounting slot is located on the first beam, and the first exhaust passage and the second mounting slot are located on the second beam.

[0012] In a possible implementation, a plurality of first through holes are formed on the first beam, each first through hole is in communication with the first mounting slot, and the low-voltage connecting pieces of each battery module are collected in the first mounting slot through the corresponding first through hole.

[0013] In a possible implementation, a plurality of second through holes are formed on the second beam, each second through hole is connected to the first exhaust channel, and the exhaust port of each battery module is connected to the first exhaust channel via the corresponding second through hole.

[0014] In a possible implementation, a plurality of through slots are formed on the second beam, each through slot is connected to the second mounting slot, and the high-voltage lead-out parts of each battery module are collected in the second mounting slot through the corresponding through slot.

[0015] In a possible implementation, a high-voltage connector is provided on the second beam, and the high-voltage connector is located in the second mounting groove to electrically connect to the high-voltage lead-out members on adjacent battery modules.

[0016] In a possible implementation, an isolation portion is further provided on the second beam, and the isolation portion is located in the second mounting groove to at least partially isolate adjacent high-voltage connectors.

[0017] In a possible implementation, the first installation groove and the second installation groove are respectively located on two sides of the first exhaust channel.

[0018] In one possible implementation, the low-voltage connector is a low-voltage wiring harness;

[0019] And / or, the high voltage lead-out component is a high voltage connection bar.

[0020] In a possible implementation, a tray is further included, the tray has a first accommodating cavity, the beam assembly and each battery module are located in the first accommodating cavity, and at least part of the beam assembly is connected to the tray.

[0021] In a possible implementation, the tray includes a first frame and a first bottom plate connected to the first frame, the beam assembly is connected to at least the first frame, and each battery module is arranged on the first bottom plate.

[0022] In a possible implementation, the tray further includes a plurality of lifting ears, each of which is connected to at least a portion of the circumference of the first frame and is used to connect to an electrical device.

[0023] In a possible implementation, the hanging ear moves relative to the first frame to adjust the connection position with the electrical device.

[0024] In a possible implementation, a first sliding portion is provided on the first frame, and a second sliding portion matching the first sliding portion is provided on the lifting ear;

[0025] The second sliding portion is slidably connected to the first sliding portion so that each ear moves relative to the first frame.

[0026] In one possible implementation, the battery module includes a housing and a plurality of battery cells, wherein the housing has a second accommodating cavity;

[0027] Each of the battery cells is located in the second accommodating cavity and arranged in a stack;

[0028] The low-voltage connecting member and the high-voltage leading member are arranged through the shell, the high-voltage leading member is electrically connected with at least part of the battery cells, and the discharge port is arranged on the shell.

[0029] In a possible implementation, the shell comprises a second frame, a second bottom plate and a top plate, the second bottom plate is connected at the bottom of the second frame, and the top plate is arranged on the top of the second frame to enclose the second accommodating cavity;

[0030] Each of the battery cells is arranged on the second bottom plate, the low-voltage connecting member and the high-voltage leading member are arranged through the second frame, and the discharge port is arranged on the second frame.

[0031] In a possible implementation, the second frame comprises a first side plate, a second side plate, a third side plate and a fourth side plate connected in sequence, the low-voltage connecting member and the high-voltage leading member are arranged through the first side plate, and the discharge port is arranged on the first side plate.

[0032] In a possible implementation, the battery module further comprises a collecting member located in the second accommodating cavity and connected with each of the battery cells, a third through hole is arranged on the first side plate, and the low-voltage connecting member is electrically connected with the collecting member through the third through hole.

[0033] And / or, a plurality of fourth through holes are arranged on the first side plate, and the high-voltage leading member is electrically connected with at least part of the battery cells through the corresponding fourth through hole.

[0034] In a possible implementation, the second side plate has a second discharge channel, one side of the second discharge channel is in communication with the discharge port, and the other side of the second discharge channel is used for collecting liquid and gas at the explosion-proof valve on the battery cell.

[0035] And / or, the second side plate has at least one third mounting groove, each of the low-voltage connecting members is collected in the third mounting groove, and the third mounting groove is in communication with the third through hole on the first side plate.

[0036] In a possible implementation, the second frame further comprises at least one groove plate, one end of the groove plate is connected to the second side plate and in communication with the second discharge channel in the second side plate.

[0037] The groove plate is arranged on the end of the battery cell, and the groove of the groove plate faces the explosion-proof valve on each of the battery cells.

[0038] In a possible implementation, one side of the second side plate facing the second accommodating cavity has a jack, the jack is in communication with the second discharge channel, and one end of the groove plate is arranged in the jack.

[0039] In a possible implementation, one side of the fourth side plate facing the second accommodating cavity has a slot, and the other end of the groove plate is arranged in the slot.

[0040] In a possible implementation, the third side plate is an elastic plate.

[0041] In a possible implementation, the second bottom plate is a cold plate, and the bottom of each battery cell abuts against the cold plate.

[0042] And / or, the top plate is a heating plate, and the top of each battery cell abuts against the heating plate.

[0043] In a possible implementation, a flow control member is arranged on the pipeline of the cold plate, and the flow control member is connected with part of the low-voltage connecting member.

[0044] And / or, a power control member is arranged on the line of the heating plate, and the power control member is connected with part of the low-voltage connecting member.

[0045] In a second aspect, the application further provides a power consumption device comprising any one of the battery packs provided in the first aspect.

[0046] The battery pack and the power consumption device provided in the application comprise a beam assembly and a plurality of battery modules. At least one mounting groove and a first discharge passage are arranged on the beam assembly, each battery module is arranged on at least one side of the beam assembly, each battery module has a circuit connecting member and a discharge port, the circuit connecting members of the battery modules are gathered in the mounting groove, and the discharge ports of the battery modules are communicated with the first discharge passage. Thus, the battery pack provided in the application can adjust the voltage and capacity of the battery pack by increasing or decreasing the number of battery modules, has a wider application range, separates the circuit line and the exhaust, greatly reduces the risk of line failure, and improves the safety of the battery pack. BRIEF DESCRIPTION OF DRAWINGS

[0047] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0048] Figure 1 The top view structural schematic diagram of the battery pack provided in the embodiments of the application;

[0049] Figure 2 The exploded view in Figure 1 ;

[0050] Figure 3 The structural schematic diagram of the beam assembly in Figure 1 ;

[0051] Figure 4 The structural schematic diagram of the beam assembly in Figure 1Structure diagram of the battery module in the middle;

[0052] Figure 5 For Figure 1 First high-voltage connection relationship diagram of each battery module in the middle;

[0053] Figure 6 For Figure 1 Second high-voltage connection relationship diagram of each battery module in the middle;

[0054] Figure 7 For Figure 1 Third high-voltage connection relationship diagram of each battery module in the middle;

[0055] Figure 8 For Figure 4 Explosion diagram in the middle;

[0056] Figure 9 For Figure 8 Structure diagram of the second side plate in the middle;

[0057] Figure 10 For Figure 1 Cooling pipeline connection relationship diagram of each battery module in the middle;

[0058] Figure 11 For Figure 1 Heating line connection relationship diagram of each battery module in the middle.

[0059] Reference signs:

[0060] 100: beam assembly; 101: first mounting groove; 102: first discharge passage; 103: second mounting groove; 110: first beam; 111: first through hole; 120: second beam; 121: second through hole; 122: through slot; 123: high-voltage connecting piece; 124: isolation part;

[0061] 200: battery module; 201: low-voltage connecting piece; 202: discharge port; 203: high-voltage leading-out piece; 210: shell; 2101: third through hole; 2102: fourth through hole; 2103: second discharge passage; 2104: third mounting groove; 2105: insertion hole; 2106: insertion slot; 2107: flow control piece; 2108: power control piece; 211: second frame; 2111: first side plate; 2112: second side plate; 2113: third side plate; 2114: fourth side plate; 2115: slot plate; 212: second bottom plate; 213: top plate; 220: battery cell; 230: collection piece;

[0062] 300: tray; 310: first frame; 311: first sliding part; 320: first bottom plate; 330: lifting lug; 331: second sliding part. DETAILED DESCRIPTION

[0063] The exemplary embodiments will be described in detail herein with reference to the accompanying drawings. In the following description, like reference numerals refer to like elements throughout the description. The following exemplary embodiments described herein represent illustrations only of the principles of the application. Furthermore, these embodiments are not intended to limit the scope of the application as set forth in the appended claims to the illustrative embodiments described herein. Rather, these embodiments are intended to explain the principles of the application and to enable one of ordinary skill in the art to make and use the application as claimed.

[0064] The terms "first", "second", "third", "fourth", and the like used in the description and the claims herein, and the above accompanying drawings, if any, are used to distinguish between similar objects, and are not necessarily used to describe a particular sequential or chronological order. It is to be understood that the use of the terms so construed can be interchanged, where appropriate, to describe the embodiments of the application described herein, for example, can be practiced in other than the illustrated orders. Also, the terms "comprising", "having", "including" and "containing" are intended to be open-ended and to mean including, but not limited to, the listed items and any equivalents thereof.

[0065] As mentioned in the background section, in the existing battery pack structure, different structures of the pack body need to be developed for different string numbers, voltage platforms and other performance requirements. Reducing the number of cell strings means that most of the plastic structural parts, low-voltage collection components, high-voltage components and other components need to be redeveloped, which requires a large number of material development types, high cost and long cycle. In addition, the high and low voltage wires and hot gas inside the pack body affect the safety of the pack. The low-voltage wire harness and high-voltage aluminum row are close to each other, which is easy to be affected by heat damage, or the risk caused by high-voltage insulation failure, and the high-temperature gas generated by the thermal runaway of the battery cell causes the sampling failure risk and insulation failure arc risk of the low-voltage wire harness and high-voltage connecting piece. Furthermore, for the pack body with different outer contour size requirements, the tray structure needs to be redeveloped, and in addition, the change of the battery cell gravity center also needs to adjust the X and Y direction fixing position of the lifting lug, which requires a large number of material types and long mold opening cycle.

[0066] In view of the above problems existing in the prior art, the present application provides a battery pack and a power utilization device. The battery pack provided by the present application comprises a beam assembly and a plurality of battery modules. At least one mounting groove and a first discharge channel are arranged on the beam assembly, and each battery module is arranged on at least one side of the beam assembly. The battery module has a circuit connecting piece and a discharge port. The circuit connecting pieces of the battery modules are collected in the mounting groove, and the discharge ports of the battery modules are communicated with the first discharge channel. By increasing or decreasing the number of battery modules, the voltage and capacity of the battery pack can be adjusted, and the application range is wider. At the same time, the circuit wiring and the exhaust are separated, which greatly reduces the risk of line failure and improves the safety of the battery pack.

[0067] The technical solutions of the present application will be described in detail below with specific examples. The following specific examples can be combined with each other, and the same or similar concepts or processes can not be described in detail in some examples.

[0068] In the first aspect, referring to Figures 1-11 The battery pack provided by the embodiments of the present application includes a beam assembly 100 and a plurality of battery modules 200, the beam assembly 100 has at least one mounting slot and a first discharge channel 102.

[0069] Each battery module 200 is arranged on at least one side of the beam assembly 100, and the battery module 200 has a circuit connecting piece and a discharge port 202.

[0070] The circuit connecting pieces of each battery module 200 are gathered in the mounting slot, and each discharge port 202 is in communication with the first discharge channel 102.

[0071] The beam assembly 100 in the embodiments is mainly used for managing high-voltage and low-voltage wiring and discharging, and can be a profile, which is roughly in the shape of a cuboid shell. The beam assembly 100 has at least one mounting slot and a first discharge channel 102 along the length direction, as shown along the Y-axis direction, the mounting slot and the first discharge channel 102 are independent of each other. Figure 3

[0072] The mounting slot can also be called a wire slot, which can be used to place low-voltage buses such as sampling buses and heating buses, and can be an open slot or a closed slot. It can also be used to place high-voltage connection rows or connecting pieces, and can be an open slot or a closed slot. The first discharge channel 102 is used to discharge high-temperature gas and liquid generated by the battery in thermal runaway, and the cross section can be rectangular, circular, etc. The end of the first discharge channel 102 is provided with a total explosion-proof valve or an opening.

[0073] The battery module 200 in the embodiments is an independent power supply or power storage unit, which is composed of a plurality of battery cells by series connection or parallel connection, and has a roughly cuboid shape. A plurality of battery modules 200 can be arranged on both sides of the beam assembly 100 and fixed on the beam assembly 100 or the tray 300. Of course, the battery modules 200 can also be arranged on only one side of the beam assembly 100.

[0074] It should be noted that the voltage and capacity of the battery pack can be adjusted by increasing or decreasing the number of battery modules 200, as shown in Figure 5 、 Figure 6 、 Figure 7 Each block represents a battery module 200, and only the length of the connecting row needs to be increased, which can be applied to occasions with different voltage and capacity requirements, and the application range is wider and the power distribution is more flexible. ​

[0075] Each battery module 200 has a circuit connecting piece and a discharge port 202, the circuit connecting piece can be a high-low voltage wire harness or a connecting row, the circuit connecting piece of each battery module 200 can be connected with the bus in the mounting groove, or connected with the adjacent battery module 200 to form a series connection, and the discharge port 202 of each battery module 200 is communicated with the first discharge channel 102.

[0076] It should be noted that by managing the circuit connecting piece and the exhaust separately, the mutual influence between them can be effectively prevented, thereby greatly reducing the risk of line failure and ensuring the safety of the battery pack.

[0077] It can be understood that, compared with the existing battery pack with a fixed number of battery cells, the application of the battery pack in the embodiment can realize the adjustment of the voltage and capacity of the battery pack by increasing or decreasing the number of battery modules 200, has a wider application range, and separates the circuit wiring and the exhaust, thereby greatly reducing the risk of line failure and improving the safety of the battery pack.

[0078] Therefore, the battery pack provided in the embodiment of the application includes a beam assembly 100 and a plurality of battery modules 200, each battery module 200 is arranged on at least one side of the beam assembly 100 by arranging at least one mounting groove and a first discharge channel 102 on the beam assembly 100, each battery module 200 has a circuit connecting piece and a discharge port 202, the circuit connecting pieces of the battery modules 200 are collected in the mounting groove, and the discharge ports 202 of the battery modules 200 are communicated with the first discharge channel 102, the voltage and capacity of the battery pack are adjusted by increasing or decreasing the number of battery modules 200, the application range is wider, the circuit wiring and the exhaust are separated, the risk of line failure is greatly reduced, and the safety of the battery pack is improved.

[0079] In some embodiments, the at least one mounting groove includes a first mounting groove 101 and a second mounting groove 103, and the circuit connecting piece includes a low-voltage connecting piece 201 and a high-voltage leading-out piece 203.

[0080] The low-voltage connecting pieces 201 of the battery modules 200 are collected in the first mounting groove 101, and the high-voltage leading-out pieces 203 are collected in the second mounting groove 103.

[0081] Specifically, the first mounting groove 101 and the second mounting groove 103 are arranged along the length extension direction of the beam assembly 100, for example, as shown along the Y-axis direction in the figure, the first mounting groove 101, the first discharge channel 102 and the second mounting groove 103 are independent of each other. Figure 3

[0082] ​The first mounting slot 101 is used to house low-voltage busbars, such as sampling buses and heating buses. Exemplarily, the first mounting slot 101 is an open slot, facing downward, and the opening can be enclosed by the bottom plate of the tray. The second mounting slot 103 is used to house high-voltage connecting bars or connecting plates. Exemplarily, the second mounting slot 103 is an open slot, facing upward.

[0083] Each battery module 200 has circuit connectors such as a low voltage connector 201 and a high voltage lead-out component 203. Figure 4 As shown, each low-voltage connector 201 is connected to the low-voltage bus in the first installation slot 101, and each high-voltage lead-out member 203 is connected to the high-voltage connecting piece in the second installation slot 103, forming a series connection.

[0084] It should be noted that by managing the low-voltage connector 201, exhaust and high-voltage lead-out parts 203 separately, the mutual influence between the three can be effectively prevented, thereby greatly reducing the risk of line failure and ensuring the safety of the battery pack.

[0085] Furthermore, in this embodiment, the beam assembly 100 includes a first beam 110 and a second beam 120 , the first mounting groove 101 is located on the first beam 110 , and the first discharge channel 102 and the second mounting groove 103 are located on the second beam 120 .

[0086] In this way, if Figure 3 As shown, the inner space of the first beam 110 is used as the first installation groove 101, and the inner space of the second beam 120 is used as the first discharge channel 102 and the second installation groove 103, which is convenient for classification management.

[0087] The first beam 110 can be connected to the tray 300 by welding, screwing, clamping, etc., and the second beam 120 can also be connected to the first beam 110 by welding, screwing, clamping, etc. The specific shapes and specifications of the first beam 110 and the second beam 120 can be determined according to actual needs and are not specifically limited in this embodiment.

[0088] It should be noted that the second beam 120 can be made of composite materials such as epoxy resin and glass fiber, as long as it has the characteristics of being resistant to electrolyte, resistant to high voltage, and having excellent insulation performance.

[0089] Furthermore, in this embodiment, a plurality of first through holes 111 are provided on the first beam 110 , each first through hole 111 is respectively connected to the first mounting groove 101 , and the low-voltage connector 201 of each battery module 200 is collected in the first mounting groove 101 through the corresponding first through hole 111 .

[0090] Specifically, if Figure 3As shown, a plurality of first through holes 111 are provided on the side wall of the first beam 110. The first through holes 111 are arranged at intervals along the extending direction of the first beam 110. Figure 3 As shown in the Y-axis direction, the low-voltage connectors 201 on each battery module 200 pass through the corresponding first through holes 111 and are gathered in the first mounting groove 101 .

[0091] The first through holes 111 may be rectangular, circular, etc. The specific shape, number, hole spacing, etc. of the first through holes 111 may be determined according to actual needs and are not specifically limited in this embodiment.

[0092] Furthermore, in this embodiment, a plurality of second through holes 121 are formed on the second beam 120 , each second through hole 121 is connected to the first exhaust channel 102 , and the exhaust port 202 of each battery module 200 is connected to the first exhaust channel 102 via the corresponding second through hole 121 .

[0093] Specifically, if Figure 3 As shown, a plurality of second through holes 121 are provided on the side wall of the second beam 120. The second through holes 121 are arranged at intervals along the extension direction of the second beam 120. Figure 3 As shown in the Y-axis direction, the exhaust port 202 on each battery module 200 is connected to the first exhaust channel 102 through the corresponding second through hole 121 .

[0094] The second through holes 121 may be rectangular, circular, etc. The specific shape, number, hole spacing, etc. of the second through holes 121 may be determined according to actual needs and are not specifically limited in this embodiment.

[0095] Furthermore, in this embodiment, a plurality of through slots 122 are provided on the second beam 120 , each through slot 122 is connected to the second mounting slot 103 , and the high-voltage lead-out member 203 of each battery module 200 is collected in the second mounting slot 103 through the corresponding through slot 122 .

[0096] Specifically, if Figure 3 As shown, a plurality of through slots 122 are provided on the side wall of the second beam 120. The through slots 122 are arranged at intervals along the extension direction of the second beam 120. Figure 1 As shown in the Y-axis direction, the high-voltage lead-out members 203 on each battery module 200 pass through the corresponding through slots 122 and are gathered in the second mounting slot 103 .

[0097] Exemplarily, the through slot 122 is an open slot with its opening facing upward, which is convenient for placing the high-voltage lead-out member 203. Of course, the through slot 122 can also be a closed slot, etc. The specific shape, number, and slot spacing of the through slot 122 can be determined according to actual needs and are not specifically limited in this embodiment.

[0098] In some embodiments, the second beam 120 is provided with a high-voltage connecting piece 123, which is located in the second mounting groove 103 to electrically connect the high-voltage lead-out piece 203 on the adjacent battery module 200.

[0099] Specifically, as shown in Figure 2 , Figure 1 , the high-voltage connecting piece 123 can be a high-voltage connecting sheet, a high-voltage connecting wire, etc., which is located in the second mounting groove 103 to connect the high-voltage lead-out piece 203 on the adjacent battery module 200, so that the battery modules 200 are connected in series or parallel.

[0100] Wherein, the specific shape, number, length, etc. of the high-voltage connecting piece 123 can be determined according to actual needs, and the present embodiment does not make too many limitations.

[0101] Further, in the present embodiment, the second beam 120 is further provided with an isolation part 124, which is located in the second mounting groove 103 to at least partially isolate the adjacent high-voltage connecting pieces 123.

[0102] Exemplarily, as shown in Figure 3 , Figure 3 , the isolation part 124 can be a raised edge, which is located in the second mounting groove 103 and arranged along the length extension direction of the second beam 120, can divide the second mounting groove 103 into two grooves, and isolate the adjacent high-voltage connecting pieces 123, thereby avoiding arc striking, etc., and ensuring the safety of the circuit.

[0103] In some embodiments, the first mounting groove 101 and the second mounting groove 103 are respectively located on both sides of the first discharge channel 102. In this way, the first mounting groove 101 and the second mounting groove 103 are isolated by the first discharge channel 102, thereby isolating the high-voltage and low-voltage wiring, and further ensuring the safety of the circuit.

[0104] Exemplarily, as shown in Figure 1 , the second beam 120 is located above the first beam 110, and the second mounting groove 103 is located above the first discharge channel 102. In this way, the first mounting groove 101, the first discharge channel 102 and the second mounting groove 103 are arranged in order from bottom to top, which is convenient for wiring, etc. Of course, the first mounting groove 101, the first discharge channel 102 and the second mounting groove 103 can also be arranged in the transverse direction, which can be determined according to actual needs, and the present embodiment does not make too many limitations.

[0105] In some embodiments, the low-voltage connecting piece 201 is a low-voltage wire harness. And / or, the high-voltage lead-out piece 203 is a high-voltage connecting row. Wherein, the low-voltage wire harness can include a sampling wire harness, a heating wire harness, a control wire harness, etc. The high-voltage connecting row can be a copper row, an aluminum row, or a composite row, etc. For the specific type, shape, number, etc. of the low-voltage wire harness and the high-voltage connecting row, it can be determined according to actual needs, and the embodiments in the present application do not make too many limitations.

[0106] In some embodiments, the battery pack provided by the embodiments of the present application further comprises a tray 300, the tray 300 has a first accommodating cavity, the beam assembly 100 and each battery module 200 are located in the first accommodating cavity, and at least part of the beam assembly 100 is connected with the tray 300.

[0107] In this way, as shown in Figure 2 , Figure 2 , the beam assembly 100 and each battery module 200 can be carried by the tray 300 to form the whole battery pack, which is convenient for installation on the electrical equipment. Wherein, the beam assembly 100 and the tray 300 can be connected and fixed by welding, screwing, etc.

[0108] Further, in the embodiments of the present application, the tray 300 comprises a first frame 310 and a first bottom plate 320 connected with the first frame 310, the beam assembly 100 is connected with at least the first frame 310, and each battery module 200 is arranged on the first bottom plate 320.

[0109] Exemplarily, as shown in Figure 2 , the first frame 310 can be formed by four side beams connected in sequence to enclose, the side beams can adopt a profile, and the first bottom plate 320 can be connected at the bottom of the first frame 310 by screwing, welding, etc. to enclose to form the first accommodating cavity.

[0110] It should be noted that the first frame 310 should be provided with a base or a through hole corresponding to the position of the first mounting groove 101 and the first discharge channel 102, so as to facilitate the installation of the total explosion-proof valve, threading, etc. Of course, the tray 300 can also be installed with a distribution box, a cooling pipeline, etc.

[0111] Further, in the embodiments of the present application, the tray 300 further comprises a plurality of lifting lugs 330, each lifting lug 330 is connected to at least part of the circumferential side of the first frame 310 and is used for connecting with the electrical equipment.

[0112] Exemplarily, as shown in Figure 1 , four lifting lugs 330 are arranged on both sides of the first frame 310 respectively, and each lifting lug 330 can be connected to the bottom of the vehicle to fix the battery pack. Of course, the number of lifting lugs 330 can be more or less, and the embodiments of the present application do not make specific limitations.

[0113] In some embodiments, the lugs 330 are movable relative to the first frame 310 for adjusting the connection position with the electrical device.

[0114] In this way, as shown in Figure 1 , each lug 330 can be moved along the X-axis direction in Figure 1 , so that the connection position can be adjusted, and more flexible. Of course, each lug 330 can also be arranged to move along the Y-axis direction in Figure 2 , etc., and can also be arranged to different lengths, which can be determined according to actual needs, and the present embodiment is not limited too much.

[0115] Further, in the present embodiment, the first frame 310 is provided with a first sliding part 311, and the lug 330 is provided with a second sliding part 331 matched with the first sliding part 311.

[0116] The second sliding part 331 is in sliding connection with the first sliding part 311, so that each lug 330 is movable relative to the first frame 310.

[0117] Exemplarily, as shown in Figure 2 , the first sliding part 311 can be a sliding groove arranged along the first direction, as shown along the X-axis direction in Figure 4 , and the second sliding part 331 can be a sliding convex matched with the sliding groove, and the sliding convex is in sliding connection with the sliding groove, so that the sliding adjustment position of each lug 330 is realized.

[0118] Of course, the first sliding part 311 can also be a sliding convex arranged along the first direction, which is not shown in the figure, and the second sliding part 331 can be a sliding groove matched with the sliding convex, and the sliding groove is in sliding connection with the sliding convex, so that the sliding adjustment position of each lug 330 is also realized.

[0119] In some embodiments, the battery module 200 includes a shell 210 and a plurality of battery cells 220, and the shell 210 has a second accommodating cavity.

[0120] Each battery cell 220 is located in the second accommodating cavity and is arranged in a stacked manner.

[0121] The low-voltage connecting piece 201 and the high-voltage leading-out piece 203 are arranged through the shell 210, the high-voltage leading-out piece 203 is electrically connected with at least part of the battery cells 220, and the discharge port 202 is arranged on the shell 210.

[0122] Specifically, as shown in Figure 8 , Figure 8As shown, the shell 210 is substantially rectangular structure, and a second accommodating cavity inside the shell 210 is used to accommodate the battery cell 220, etc. The shell 210 can be enclosed by a plurality of plates. The battery cell 220 is substantially a rectangular sheet or plate structure, such as a blade battery. The battery cell 220 has a length, a width and a thickness, and a height between the length and the thickness. The length of the battery cell 220 is shown along the X direction in FIG. 2, the width of the battery cell 220 is shown along the Z direction in FIG. 2, and the thickness of the battery cell 220 is shown along the Y direction in FIG. 2. Figure 8 Figure 8 Figure 8 Figure 8

[0123] The low-voltage connecting piece 201 and the high-voltage leading-out piece 203 pass through one side of the shell 210, the high-voltage leading-out piece 203 is connected with the pole of the battery cell 220 on both sides of the stack, and the discharge port 202 is located on one side of the shell 210.

[0124] Further, in the embodiment, the shell 210 includes a second frame 211, a second bottom plate 212 and a top plate 213. The second bottom plate 212 is connected at the bottom of the second frame 211, and the top plate 213 is arranged on the top of the second frame 211 to enclose the second accommodating cavity.

[0125] Each battery cell 220 is arranged on the second bottom plate 212, the low-voltage connecting piece 201 and the high-voltage leading-out piece 203 pass through the second frame 211, and the discharge port 202 is located on the second frame 211.

[0126] Specifically, as shown in FIG. 2, the second bottom plate 212 can be connected at the bottom of the second frame 211 by screwing, welding or the like, and is used to carry each battery cell 220. The low-voltage connecting piece 201 and the high-voltage leading-out piece 203 pass through the second frame 211, and the discharge port 202 is located on the second frame 211. In this way, the installation of the battery cell 220 and the wiring are facilitated. Figure 8

[0127] Specifically, as shown in FIG. 2, the second bottom plate 212 can be connected at the bottom of the second frame 211 by screwing, welding or the like, and is used to carry each battery cell 220. The low-voltage connecting piece 201 and the high-voltage leading-out piece 203 pass through the second frame 211, and the discharge port 202 is located on the second frame 211. In this way, the installation of the battery cell 220 and the wiring are facilitated.

[0128] Specifically, as shown in FIG. 2, the second bottom plate 212 can be connected at the bottom of the second frame 211 by screwing, welding or the like, and is used to carry each battery cell 220. The low-voltage connecting piece 201 and the high-voltage leading-out piece 203 pass through the second frame 211, and the discharge port 202 is located on the second frame 211. In this way, the installation of the battery cell 220 and the wiring are facilitated. Figure 8

[0129] ​​​​​​The length, width, height and other parameters of each side plate can be determined according to actual requirements, and are not specifically limited in the embodiment.

[0130] Further, in the embodiment, the battery module 200 further comprises a collection member 230, which is located in the second accommodating cavity and connected with each battery cell 220. A third through hole 2101 is formed in the first side plate 2111, and the low-voltage connecting member 201 is electrically connected with the collection member 230 through the third through hole 2101.

[0131] Alternatively, a plurality of fourth through holes 2102 are formed in the first side plate 2111, and the high-voltage leading-out member 203 is electrically connected with at least part of the battery cells 220 through the corresponding fourth through holes 2102.

[0132] Specifically, as shown in Figure 9 , the collection member 230 is used to collect the voltage, temperature and other information of each battery cell 220 to monitor each battery cell 220 in real time. The collection member 230 is connected with the pole, shell and other components of each battery cell 220 and located in the second accommodating cavity. The third through hole 2101 in the first side plate 2111 facilitates the low-voltage connecting member 201 to pass through, and the fourth through hole 2102 in the first side plate 2111 facilitates the high-voltage leading-out member 203 to pass through.

[0133] The specific size, position, number and other parameters of the third through hole 2101 and the fourth through hole 2102, and the specific type, parameters and other parameters of the collection member 230 can be determined according to actual requirements, and are not specifically limited in the embodiment.

[0134] Further, in the embodiment, the second side plate 2112 has a second discharge channel 2103 therein, one side of the second discharge channel 2103 is in communication with the discharge port 202, and the other side of the second discharge channel 2103 is used to collect the liquid and gas at the explosion-proof valve of each battery cell 220.

[0135] Alternatively, the second side plate 2112 has at least one third mounting groove 2104 therein, and each low-voltage connecting member 201 is collected in the third mounting groove 2104, and the third mounting groove 2104 is in communication with the third through hole 2101 in the first side plate 2111.

[0136] Specifically, as shown in Figure 8 , the second side plate 2112 has a hollow structure, and the second discharge channel 2103 is formed in the second side plate 2112 to collect the electrolyte and high-temperature gas at the explosion-proof valve of each battery cell 220. The third mounting groove 2104 is also formed in the second side plate 2112 to facilitate each low-voltage connecting member 201 to pass through, and the structure is more compact.

[0137] In some embodiments, the second frame 211 further comprises at least one slot plate 2115, one end of the slot plate 2115 being connected to the second side plate 2112 and being in communication with the second discharge channel 2103 in the second side plate 2112.

[0138] The slot plate 2115 covers the end of the battery cell 220, and the slot of the slot plate 2115 faces the explosion-proof valve on each battery cell 220.

[0139] Specifically, as shown in the figure, one end of the slot plate 2115 can be connected to the second side plate 2112 by insertion, welding or the like, the slot plate 2115 covers the end of each battery cell 220, and the explosion-proof valve of each battery cell 220 is located in the slot. Figure 9

[0140] In this way, under the flow guiding action of the slot plate 2115, the electrolyte and high-temperature gas can enter the second discharge channel 2103 without being randomly discharged, reducing the loss.

[0141] Further, in the present embodiment, the side of the second side plate 2112 facing the second accommodating cavity has a insertion hole 2105, the insertion hole 2105 is in communication with the second discharge channel 2103, and one end of the slot plate 2115 is inserted into the insertion hole 2105.

[0142] Specifically, as shown in the figure, one end of the slot plate 2115 is inserted into the insertion hole 2105, thereby achieving positioning and communication of the slot. Figure 9

[0143] Further, in the present embodiment, the side of the fourth side plate 2114 facing the second accommodating cavity has a insertion slot 2106, and the other end of the slot plate 2115 is inserted into the insertion slot 2106.

[0144] Specifically, as shown in the figure, the other end of the slot plate 2115 is inserted into the insertion slot 2106, which further positions the slot plate 2115 and closes the slot on that side, facilitating installation and making the structure more compact. Figure 10

[0145] In some embodiments, the third side plate 2113 is a flexible plate. In this way, when each battery cell 220 expands, it can play a buffering role while ensuring a certain restraint force, so that each battery cell 220 works at a better performance.

[0146] In some embodiments, the second bottom plate 212 is a cold plate, and the bottom of each battery cell 220 abuts against the cold plate.

[0147] And / or, the top plate 213 is a heating plate, and the top of each battery cell 220 abuts against the heating plate.

[0148] ​​​Specifically, the cold plate has a cooling flow channel to cool each battery cell 220. The heating plate has heating fins or heating wires to preheat each battery cell 220 to quickly reach the optimal performance. The specific type, specification, etc. of the cold plate and the heating plate can be determined according to actual needs, and are not specifically limited in the embodiment.

[0149] Further, in the embodiment, the pipeline of the cold plate is provided with a flow control component 2107, and the flow control component 2107 is connected with the partial low-voltage connection 201.

[0150] Further, in the embodiment, the pipeline of the cold plate is provided with a flow control component 2107, and the flow control component 2107 is connected with the partial low-voltage connection 201.

[0151] Specifically, as shown in Figure 11 each cold plate can be connected in series through a pipeline to form a loop, and the pipeline flowing into each cold plate is further provided with a flow control component 2107, such as a flow control module or a flow control valve. Each flow control module is connected to the acquisition bus (i.e. the partial low-voltage connection 201) through an acquisition line and connected to the battery driving unit BDU for processing, so as to control the flow rate of the cooling liquid of a single cold plate, thereby adapting to the difference in cooling performance requirements of the battery module 200 at different positions in the temperature field.

[0152] In addition, as shown in ​ the pipeline of each heating plate is provided with a power control component 2108, such as a power control module. The heating plates are connected in series to the heating plate bus (i.e. the partial low-voltage connection 201) through the power control module. By adjusting the control parameters of the power module, the heating power of each heating plate can be independently controlled to meet the difference in heating performance requirements of each battery module 200 in different temperature fields.

[0153] In a second aspect, the embodiment of the present application further provides a power utilization device, which comprises the battery pack provided by any of the above embodiments. The power utilization device can be a new energy vehicle, an energy storage power station, etc.

[0154] The structure of the battery pack is described in detail in the above embodiments, and will not be repeated here.

[0155] The power utilization equipment provided by the embodiments of the present application is prepared by the battery pack, the battery pack comprises a beam assembly 100 and a plurality of battery modules 200, at least one mounting groove and a first discharge channel 102 are arranged on the beam assembly 100, each battery module 200 is arranged on at least one side of the beam assembly 100, the battery module 200 is provided with a circuit connecting piece and a discharge port 202, the circuit connecting pieces of the battery modules 200 are gathered in the mounting groove, and the discharge ports 202 of the battery modules 200 are communicated with the first discharge channel 102, the number of the battery modules 200 is increased or decreased, the voltage and the capacity of the battery pack are adjusted, the application range is wider, the circuit wiring and the exhaust are separated, the risk of line failure is greatly reduced, and the safety of the battery pack is improved.

[0156] 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. It is intended that the specification and examples be considered as exemplary only, with the true scope and spirit of the application being indicated by the following claims.

[0157] It should be understood that the application is not limited to the precise construction and order of steps described above and shown in the accompanying drawings, and that various modifications and changes can be made without departing from the scope thereof. The scope of the application is limited only by the claims.

Claims

1. A battery pack, characterized in that: It comprises a beam assembly (100) and a plurality of battery modules (200), wherein the beam assembly (100) has at least one mounting groove and a first discharge channel (102); Each of the battery modules (200) is respectively arranged on at least one side of the beam assembly (100), and the battery module (200) has a circuit connection member and a discharge port (202); The circuit connectors of each battery module (200) are gathered in the installation groove, and each discharge port (202) is in communication with the first discharge channel (102).

2. The battery pack according to claim 1, wherein: The at least one mounting slot comprises a first mounting slot (101) and a second mounting slot (103); the circuit connector comprises a low-voltage connector (201) and a high-voltage lead-out member (203); The low-voltage connecting pieces (201) of each battery module (200) are gathered in the first installation groove (101), and the high-voltage lead-out pieces (203) are gathered in the second installation groove (103).

3. The battery pack according to claim 2, wherein: The beam assembly (100) comprises a first beam (110) and a second beam (120), the first mounting groove (101) being located on the first beam (110), and the first discharge channel (102) and the second mounting groove (103) being located on the second beam (120).

4. The battery pack according to claim 3, wherein: A plurality of first through holes (111) are provided on the first beam (110), each of the first through holes (111) being in communication with the first mounting groove (101), and the low-voltage connector (201) of each battery module (200) is collected in the first mounting groove (101) via the corresponding first through hole (111).

5. The battery pack according to claim 3, wherein: A plurality of second through holes (121) are provided on the second beam (120), each of the second through holes (121) being in communication with the first discharge channel (102), and the discharge port (202) of each battery module (200) being in communication with the first discharge channel (102) via the corresponding second through hole (121).

6. The battery pack according to claim 3, characterized in that: A plurality of through slots (122) are provided on the second beam (120), each of the through slots (122) being in communication with the second mounting slot (103), and the high-voltage lead-out member (203) of each battery module (200) is collected in the second mounting slot (103) via the corresponding through slot (122).

7. The battery pack according to claim 6, characterized in that: A high-voltage connector (123) is provided on the second beam (120), and the high-voltage connector (123) is located in the second mounting groove (103) to electrically connect the high-voltage lead-out member (203) on the adjacent battery module (200).

8. The battery pack according to claim 7, characterized in that: An isolation portion (124) is also provided on the second beam (120), and the isolation portion (124) is located in the second mounting groove (103) to at least partially isolate adjacent high-voltage connectors (123).

9. The battery pack according to claim 2, wherein: The first installation groove (101) and the second installation groove (103) are respectively located on two sides of the first discharge channel (102).

10. The battery pack according to claim 2, wherein: The low-voltage connector (201) is a low-voltage wiring harness; And / or, the high-voltage lead-out component (203) is a high-voltage connection bar.

11. The battery pack according to any one of claims 1 to 10, characterized in that: It also includes a tray (300), the tray (300) having a first accommodating cavity, the beam assembly (100) and each of the battery modules (200) being located in the first accommodating cavity, and at least a portion of the beam assembly (100) being connected to the tray (300).

12. The battery pack according to claim 11, wherein: The tray (300) comprises a first frame (310) and a first bottom plate (320) connected to the first frame (310); the beam assembly (100) is connected to at least the first frame (310); and each battery module (200) is arranged on the first bottom plate (320).

13. The battery pack according to claim 12, wherein: The tray (300) further comprises a plurality of lifting ears (330), each of the lifting ears (330) being connected to at least a portion of the circumference of the first frame (310) and being used for connection to an electrical device.

14. The battery pack according to claim 13, wherein: The lifting lug (330) moves relative to the first frame (310) to adjust the connection position with the electrical equipment.

15. The battery pack according to claim 14, characterized in that: A first sliding portion (311) is provided on the first frame (310), and a second sliding portion (331) matching the first sliding portion (311) is provided on the lifting lug (330); The second sliding portion (331) is slidably connected to the first sliding portion (311) so that each of the hanging ears (330) moves relative to the first frame (310).

16. The battery pack according to any one of claims 1 to 10, characterized in that: The battery module (200) comprises a housing (210) and a plurality of battery cells (220), wherein the housing (210) has a second accommodating cavity; Each of the battery cells (220) is located in the second accommodating cavity and is stacked; The low-voltage connector (201) and the high-voltage lead-out member (203) are inserted into the housing (210), the high-voltage lead-out member (203) is electrically connected to at least a portion of the battery core (220), and the discharge port (202) is located on the housing (210).

17. The battery pack according to claim 16, wherein: The housing (210) comprises a second frame (211), a second bottom plate (212) and a top plate (213), wherein the second bottom plate (212) is connected to the bottom of the second frame (211), and the top plate (213) is covered on the top of the second frame (211) to enclose the second accommodating cavity; Each of the battery cells (220) is arranged on the second bottom plate (212), the low-voltage connector (201) and the high-voltage lead-out member (203) are passed through the second frame (211), and the discharge port (202) is located on the second frame (211).

18. The battery pack according to claim 17, characterized in that: The second frame (211) comprises a first side plate (2111), a second side plate (2112), a third side plate (2113) and a fourth side plate (2114) connected in sequence, the low-voltage connection piece (201) and the high-voltage lead-out piece (203) are passed through the first side plate (2111), and the discharge port (202) is located on the first side plate (2111).

19. The battery pack according to claim 17, wherein: The battery module (200) further comprises a collecting member (230), the collecting member (230) being located in the second accommodating cavity and connected to each of the battery cells (220); a third through hole (2101) is provided on the first side plate (2111), and the low-voltage connecting member (201) is electrically connected to the collecting member (230) via the third through hole (2101); And / or, a plurality of fourth through holes (2102) are provided on the first side plate (2111), and the high-voltage lead-out member (203) is electrically connected to at least part of the battery cells (220) via the corresponding fourth through holes (2102).

20. The battery pack according to claim 19, wherein: A second discharge channel (2103) is provided in the second side plate (2112), one side of the second discharge channel (2103) is in communication with the discharge port (202), and the other side of the second discharge channel (2103) is used to collect liquid and gas at the explosion-proof valve on the battery cell (220); And / or, the second side plate (2112) has at least one third mounting groove (2104), each of the low-voltage connecting parts (201) is collected in the third mounting groove (2104), and the third mounting groove (2104) is connected to the third through hole (2101) on the first side plate (2111).

21. The battery pack according to claim 20, characterized in that: The second frame (211) further comprises at least one slot plate (2115), one end of the slot plate (2115) being connected to the second side plate (2112) and communicating with the second discharge channel (2103) in the second side plate (2112); The slot plate (2115) is covered at the end of the battery cell (220), and the slot opening of the slot plate (2115) faces the explosion-proof valve on each battery cell (220).

22. The battery pack according to claim 21, wherein: A plug hole (2105) is provided on the side of the second side plate (2112) facing the second accommodating cavity. The plug hole (2105) is connected to the second discharge channel (2103), and one end of the slot plate (2115) is inserted into the plug hole (2105).

23. The battery pack according to claim 22, characterized in that: A slot (2106) is provided on the side of the fourth side plate (2114) facing the second accommodating cavity, and the other end of the slot plate (2115) is inserted into the slot (2106).

24. The battery pack according to claim 18, wherein: The third side plate (2113) is an elastic plate.

25. The battery pack according to claim 17, wherein: The second bottom plate (212) is a cold plate, and the bottom of each battery cell (220) abuts against the cold plate; And / or, the top plate (213) is a heating plate, and the top of each battery cell (220) abuts against the heating plate.

26. The battery pack according to claim 25, characterized in that: A flow control component (2107) is provided on the pipeline of the cold plate, and the flow control component (2107) is connected to a portion of the low-pressure connecting components (201); And / or, a power control component (2108) is provided on the circuit of the heating plate, and the power control component (2108) is connected to part of the low-voltage connecting component (201).

27. An electrical device, characterized in that: Comprising a battery pack as claimed in any one of claims 1 to 26.

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