Battery pack and electric device

Abstract

The invention provides a battery pack and an electric device, and relates to the technical field of batteries. The battery pack comprises a box body, a battery, a high-voltage integrated assembly, an insulating support body, a low-voltage integrated assembly and a cooling assembly, the plurality of batteries are arranged in the box body and are connected in series and in parallel; the high-voltage integrated assembly comprises an output positive electrode and an output negative electrode, and the output positive electrode and the output negative electrode are electrically connected with the battery. The insulating support body is arranged in the box body; the output positive electrode and the output negative electrode are respectively connected with the insulating support body. The low-voltage integrated assembly comprises a connector and a circuit board, the circuit board is electrically connected with the battery, and the connector is electrically connected with the circuit board. The cooling assembly comprises a connecting pipe and a cold plate which are connected, the cold plate is arranged between the batteries, and the connector is connected to the connecting pipe. The battery pack is high in grouping efficiency, compact in structure, reliable in connection and high in space utilization rate, and the energy density of the battery pack and the safety of the whole battery pack are improved.

Description

Technical Field

[0001] The present invention relates to the field of battery technology, and in particular to a battery pack and an electrical device. Background Art

[0002] The inventors' research has revealed that existing complete machines and vehicles have high requirements for range and cost, making battery system safety a crucial component that cannot be ignored. Current cylindrical battery systems have low internal space utilization during the assembly of cylindrical cells, and the assembly process is complex. Under extreme operating conditions, the fixing structure for the high and low voltage connections poses a risk of failure, posing a relatively high safety risk to the battery system. Summary of the Invention

[0003] The purpose of the present invention includes providing a battery pack and an electrical device with high grouping efficiency, compact structure, reliable connection, and high space utilization, which are beneficial to improving the energy density of the battery pack and the safety of the entire pack.

[0004] The embodiments of the present invention can be implemented as follows:

[0005] In a first aspect, the present invention provides a battery pack, comprising:

[0006] Box;

[0007] A plurality of batteries, wherein the plurality of batteries are arranged in the box and the plurality of batteries are connected in series and parallel;

[0008] A high-voltage integrated component, the high-voltage integrated component comprising an output positive electrode and an output negative electrode, the output positive electrode and the output negative electrode being electrically connected to the battery respectively;

[0009] An insulating support body, the insulating support body being arranged in the box body; the output positive electrode and the output negative electrode being connected to the insulating support body respectively;

[0010] A low-voltage integrated component, the low-voltage integrated component comprising a connector and a circuit board, the circuit board being electrically connected to the battery, and the connector being electrically connected to the circuit board;

[0011] A cooling assembly includes a connecting pipe and a cold plate connected to each other. The cold plate is arranged between the batteries, and the connector is connected to the connecting pipe.

[0012] In an optional embodiment, the output positive electrode includes a first connecting piece and a first copper busbar; the output negative electrode includes a second connecting piece and a second copper busbar; the insulating support includes a first column and a second column arranged at intervals;

[0013] One end of the first connecting piece along the first direction is electrically connected to the battery, and the other end of the first connecting piece along the first direction is connected to the first copper busbar and fixed to the first column;

[0014] One end of the second connecting piece along the first direction is electrically connected to the battery, and the other end of the second connecting piece along the first direction is connected to the second copper busbar and fixed on the second column.

[0015] In an optional embodiment, an auxiliary support member is further provided in the box, and the second connecting piece is connected to the second column at one end along the second direction and connected to the auxiliary support member at the other end, and the connector is led out from between the second column and the auxiliary support member, and the second direction is perpendicular to the first direction.

[0016] In an optional embodiment, the first connecting piece is connected to the first column along the center of the second direction, the connector is led out from between the first column and the second column, and the second direction is perpendicular to the first direction.

[0017] In an optional embodiment, at least two low-voltage integrated components are provided, the connector of each low-voltage integrated component is provided at one end of the box body, and the two connectors are arranged at intervals, the high-voltage integrated component and the connector are provided at the same end of the box body, and the two connectors are respectively arranged alternately with the output positive pole and the output negative pole.

[0018] In an optional embodiment, the low-voltage integrated assembly further includes an insulating fixture, one end of the insulating fixture is connected to the connector, and the other end of the insulating fixture is connected to the connecting pipe.

[0019] In an optional embodiment, an arc-shaped opening is provided at the bottom of the insulating fixing piece, and the opening of the arc-shaped opening faces downward to be sleeved on the connecting pipe; a fixing plate is provided at the top of the insulating fixing piece, and the fixing plate is used to fix the connector.

[0020] In an optional embodiment, a reinforcing plate is provided between the connector and the fixing plate, a hook is provided at one end of the fixing plate to engage with the reinforcing plate, and the opening of the connector faces the hook.

[0021] In an optional embodiment, the connecting pipe includes an inlet manifold, an outlet manifold, a plurality of fluid collectors, and a plurality of connecting pipes; the fluid collectors and the connecting pipes are alternately arranged along the second direction to connect a plurality of cold plates in parallel, and the inlet manifold and the outlet manifold are arranged at both ends of the fluid collectors and the connecting pipes;

[0022] A plurality of cold plates are spaced apart along the second direction to form a plurality of accommodating spaces, a plurality of the batteries are formed into a plurality of battery rows and are arranged in the accommodating spaces, and along the second direction, two adjacent battery rows are staggered to form an avoidance portion, and the first column, the second column, the inlet manifold and the outlet manifold are respectively arranged in different said avoidance portions.

[0023] In a second aspect, the present invention provides an electrical device comprising the battery pack according to any one of the aforementioned embodiments.

[0024] The battery pack and the power-consuming device provided by the embodiments of the present invention have the following beneficial effects:

[0025] In the battery pack provided by the embodiment of the present invention, the output positive electrode and the output negative electrode of the high-voltage integrated component are respectively fixed on the insulating support body in the box body. The structure is reliably fixed and has good stability, which is conducive to reducing the risk of connection failure. The connector of the low-voltage integrated component is fixed on the connecting pipe of the cooling component, with a compact structure and high space utilization. In this battery pack, the assembly structure of the high and low voltage integrated components is simple, easy to operate, and has high grouping efficiency. In addition, the connection is reliable and the space utilization is high, which is conducive to improving the energy density of the battery pack and the safety of the entire pack.

[0026] The electrical device provided in the embodiment of the present invention includes the above-mentioned battery pack. The battery pack has high space utilization, high energy density, and good safety of the entire pack, which is conducive to improving battery life performance and saving costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0028] Figure 1 A schematic diagram of the exploded structure of the battery pack provided in this embodiment;

[0029] Figure 2 A schematic diagram of the assembly structure of the high and low voltage integrated components in the battery pack provided in this embodiment;

[0030] Figure 3 A schematic diagram of the exploded structure of the battery pack provided in this embodiment, including the bottom bracket, battery, cooling assembly, high and low voltage integrated assembly, and upper cover;

[0031] Figure 4 A schematic diagram of the structure of the high and low voltage integrated components of the battery pack provided in this embodiment;

[0032] Figure 5for Figure 2 A schematic cross-sectional view of the structure shown;

[0033] Figure 6 This is an enlarged structural diagram of the connection between the high-voltage integrated component and the insulating support body of the battery pack provided in this embodiment;

[0034] Figure 7 A schematic structural diagram of the first connecting piece of the battery pack provided in this embodiment;

[0035] Figure 8 A schematic structural diagram of the second connecting piece of the battery pack provided in this embodiment;

[0036] Figure 9 A schematic structural diagram of the bottom bracket of the battery pack provided in this embodiment;

[0037] Figure 10 A schematic diagram of the exploded structure of the low-voltage integrated component and cooling component of the battery pack provided in this embodiment;

[0038] Figure 11 A schematic diagram of the structure of the connection between the connector and the insulating fixing member of the battery pack provided in this embodiment.

[0039] Icons: 100-battery pack; 101-box; 102-battery compartment; 103-electrical compartment; 110-bottom bracket; 111-insulating support; 112-first column; 113-second column; 114-auxiliary support; 115-positioning slot; 120-battery; 121-avoidance portion; 130-high and low voltage integrated assembly; 140-high voltage integrated assembly; 141-output positive pole; 142-first connecting piece; 1421-first mounting hole; 143-first copper busbar; 145-output negative pole; 146-second connecting piece; 1461-third mounting hole ;1462-slot;147-second copper busbar;148-first fixing piece;149-second fixing piece;150-low-voltage integrated assembly;151-connector;1511-opening;152-circuit board;153-insulating fixing piece;154-arc-shaped opening;155-reinforcement plate;156-fixing plate;157-hook;158-thermal rivet column;160-cooling assembly;170-connecting pipe;171-inlet main pipe;172-outlet main pipe;173-current collector;174-connecting pipe;175-cold plate;180-upper cover;190-foaming glue. DETAILED DESCRIPTION

[0040] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0041] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are intended to fall within the scope of protection of the present invention.

[0042] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0043] In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the product of the invention is usually placed when in use. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be understood as a limitation on the present invention.

[0044] In addition, the terms "first", "second", etc., if used, are merely used to distinguish and describe, and should not be understood as indicating or implying relative importance.

[0045] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention may be combined with each other.

[0046] Combine Figures 1 to 3A battery pack 100 provided in an embodiment of the present invention includes a housing 101, a battery 120, a high-voltage integrated assembly 140, an insulating support body 111, a low-voltage integrated assembly 150, and a cooling assembly 160. A plurality of batteries 120 are arranged in the housing 101, and the plurality of batteries 120 are connected in series and parallel. The high-voltage integrated assembly 140 includes an output positive electrode 141 and an output negative electrode 145, and the output positive electrode 141 and the output negative electrode 145 are electrically connected to the battery 120, respectively. The insulating support body 111 is arranged in the housing 101; the output positive electrode 141 and the output negative electrode 145 are respectively connected to the insulating support body 111. The low-voltage integrated assembly 150 includes a connector 151 and a circuit board 152, the circuit board 152 is electrically connected to the battery 120, and the connector 151 and the circuit board 152 are electrically connected. The cooling assembly 160 includes a connecting tube 170 and a cold plate 175. The cold plate 175 is positioned between the batteries 120, and the connector 151 is connected to the connecting tube 170. This battery pack 100 features high grouping efficiency, a compact structure, reliable connections, and high space utilization, which helps improve the energy density and overall safety of the battery pack 100.

[0047] Combine Figures 4 to 6 In this embodiment, the output positive electrode 141 includes a first connecting piece 142 and a first copper busbar 143. The output negative electrode 145 includes a second connecting piece 146 and a second copper busbar 147. The insulating support 111 includes a first column 112 and a second column 113 spaced apart. One end of the first connecting piece 142 along the first direction is electrically connected to the battery 120, and the other end of the first connecting piece 142 along the first direction is connected to the first copper busbar 143 and fixed to the first column 112.

[0048] Combine Figure 7 Optionally, a first mounting hole 1421 is provided on the first connecting piece 142, and a second mounting hole corresponding to the first mounting hole 1421 is provided on the first copper busbar 143. The first fixing member 148 is passed through the first mounting hole 1421 and the second mounting hole and fixedly connected to the first column 112. The first fixing member 148 can be a bolt, a screw, a rivet, etc., which is not specifically limited here. In this way, the first connecting piece 142 and the first copper busbar 143 are simultaneously connected to the first column 112, with a compact structure, reliable fixation, and easy installation, and can achieve electrical connection between the first connecting piece 142 and the first copper busbar 143. The first column 112 is fixed to the bottom of the box body 101 and extends upward from the bottom of the box body 101, so that the first column 112 can be used to simultaneously support and fix the first connecting piece 142 and the first copper busbar 143. The first column 112 takes up little space, making the overall layout more compact.

[0049] Combine Figure 8Similarly, one end of the second connecting piece 146 along the first direction is electrically connected to the battery 120, and the other end of the second connecting piece 146 along the first direction is connected and fixed to the second copper busbar 147 on the second column 113. Optionally, a third mounting hole 1461 is provided on the second connecting piece 146, and a fourth mounting hole corresponding to the third mounting hole 1461 is provided on the second copper busbar 147. The second fixing member 149 is passed through the third mounting hole 1461 and the fourth mounting hole and fixedly connected to the second column 113. The second fixing member 149 can be a bolt, a screw, a rivet, etc., which is not specifically limited here. In this way, the second connecting piece 146 and the second copper busbar 147 are simultaneously connected to the second column 113, with a compact structure, reliable fixation, and easy installation, and can achieve electrical connection between the second connecting piece 146 and the second copper busbar 147. The second column 113 is fixed to the bottom of the box 101 and extends upward from the bottom of the box 101, so that the second column 113 can be used to simultaneously support and fix the second connecting piece 146 and the second copper busbar 147. The second column 113 occupies a small space, making the overall layout more compact.

[0050] Optionally, an auxiliary support member 114 is further provided in the box body 101. One end of the second connecting piece 146 along the second direction is connected to the second column 113, and the other end is connected to the auxiliary support member 114. A connector 151 is led out from between the second column 113 and the auxiliary support member 114. The second direction is perpendicular to the first direction. Optionally, the first connecting piece 142 is connected to the first column 112 at the center along the second direction, and the connector 151 is led out from between the first column 112 and the second column 113. The auxiliary support member 114 is fixed to the bottom of the box body 101 and extends upward from the bottom of the box body 101. The auxiliary support member 114 is arranged opposite to the second column 113 along the second direction, thereby supporting and fixing the second connecting piece 146 at opposite ends along the second direction, ensuring the stability of the second connecting piece 146 and avoiding stress concentration and damage to the second connecting piece 146 due to the second copper busbar 147 being fixed to one end of the second connecting piece 146.

[0051] It should be noted that simulation experiments have verified that during the operation of the battery pack 100, the temperature of the output positive electrode 141 will be higher than the temperature of the output negative electrode 145, that is, the temperature of the first connecting piece 142 will be higher than the temperature of the second connecting piece 146. Therefore, in this embodiment, the first copper busbar 143 is connected to the middle of the first connecting piece 142 and supported and fixed by the first column 112 to facilitate heat conduction and avoid local excessive temperature. In addition, in the second direction, the width of the first connecting piece 142 in the middle is wider, which has better current carrying capacity and is convenient for opening the first mounting hole 1421 connected to the first copper busbar 143, resulting in greater structural strength and more reliable electrical connection. In this embodiment, the two ends of the second connecting piece 146 are supported and fixed by the second column 113 and the auxiliary support member 114 respectively, and the second copper busbar 147 is connected to one end of the second connecting piece 146. Due to the staggered arrangement characteristics of the cylindrical battery 120, the middle of the second connecting piece 146 is provided with a notch 1462 to avoid other connecting pieces, and the connector 151 needs to be avoided. Therefore, in the second direction, the second connecting piece 146 is narrower in the middle and wider at both ends. Connecting the second copper busbar 147 to one end of the second connecting piece 146 increases the connection area, makes the electrical connection more reliable, and increases the mechanical strength of the connection structure, making the structure more stable.

[0052] It should be noted that, in addition to the first connecting piece 142 and the second connecting piece 146 , the high-voltage integrated assembly 140 also has multiple other connecting pieces, which are used to be welded to the poles of the battery 120 to connect multiple batteries 120 in series and parallel.

[0053] Combine Figure 9 Optionally, a bottom bracket 110 is provided in the box body 101. The battery 120 is mounted on the bottom bracket 110. Optionally, a positioning groove 115 is provided on the bottom bracket 110, and the positioning groove 115 is used to install the battery 120 and limit the position of the battery 120. Each battery 120 is disposed in a positioning groove 115. The first column 112, the second column 113 and the auxiliary support member 114 are fixedly connected to the bottom bracket 110. The height of the first column 112, the second column 113 and the auxiliary support member 114 can be flexibly designed according to actual installation requirements. The first column 112, the second column 113 and the auxiliary support member 114 are fixedly connected to one end of the bottom bracket 110 along the first direction, and the first column 112, the second column 113 and the auxiliary support member 114 are arranged in sequence along the second direction. The first column 112 is used to support and fix the output positive pole 141, and the second column 113 and the auxiliary support member 114 are used to support and fix the output negative pole 145. The first column 112, the second column 113 and the auxiliary support member 114 occupy little space, are convenient for layout, and improve the compactness of the overall structure.

[0054] Combine Figure 2 、 Figure 10 and Figure 11 Optionally, at least two low-voltage integrated assemblies 150 are provided. The connector 151 of each low-voltage integrated assembly 150 is provided at one end of the housing 101, and the two connectors 151 are spaced apart. The high-voltage integrated assembly 140 and the connector 151 are provided at the same end of the housing 101, and the two connectors 151 are staggered with the output positive electrode 141 and the output negative electrode 145, respectively. It can be understood that one of the two connectors 151 is provided between the output positive electrode 141 and the output negative electrode 145, and the other is provided outside the output positive electrode 141 and the output negative electrode 145. In this embodiment, the connector 151, the output positive electrode 141, the connector 151, and the output negative electrode 145 are arranged in sequence in the second direction. The distance between the output positive electrode 141 and the output negative electrode 145 is distributed as far as possible, while ensuring the electrical spacing between the output positive electrode 141 and the output negative electrode 145, providing sufficient installation space for the arrangement of the two connectors 151. In addition, the two connectors 151, the output positive pole 141 and the output negative pole 145 are all located at the same end of the box 101, with a reasonable spatial layout and a compact structure, which is easy to install and maintain. The high-voltage integrated component 140 and the low-voltage integrated component 150 do not interfere with each other, which is conducive to preventing electrical interference and short circuits.

[0055] Optionally, low-voltage integrated assembly 150 further includes an insulating fixture 153, one end of which is connected to connector 151, and the other end of which is connected to connecting tube 170. Optionally, an arc-shaped opening 154 is provided at the bottom of insulating fixture 153, with the opening of arc-shaped opening 154 facing downward so as to be sleeved onto connecting tube 170. A fixing plate 156 is provided at the top of insulating fixture 153. Fixing plate 156 is used to secure connector 151, providing support and bearing for connector 151.

[0056] Optionally, a reinforcement plate 155 is provided between the connector 151 and the fixing plate 156. A hook 157 is provided at one end of the fixing plate 156 to engage the reinforcement plate 155, with the opening 1511 of the connector 151 facing the hook 157. In this embodiment, the hook 157 is provided on the end of the fixing plate 156 facing away from the battery 120 in the first direction. At the end of the fixing plate 156 opposite the hook 157, a heat rivet 158 is provided to further securely connect the reinforcement plate 155 and the fixing plate 156. This arrangement provides greater structural strength and more stable installation of the connector 151. The opening 1511 of the connector 151 faces the hook 157, that is, toward the side of the fixing plate 156 facing away from the battery 120. This arrangement facilitates connection between the connector 151 and external devices, facilitating assembly and increasing assembly efficiency. Of course, the fixing plate 156 and the reinforcement plate 155 may also be connected by bonding, bolting, welding, or other methods, which are not specifically limited here.

[0057] In this embodiment, the low-voltage integrated component 150 includes two connectors 151, two insulating fixtures 153 and two circuit boards 152. The two connectors 151 and the two insulating fixtures 153 are connected in a one-to-one correspondence. At one end close to the cooling component 160, the ends of the two circuit boards 152 extend in opposite directions to connect with the two connectors 151 in a one-to-one correspondence. The two insulating fixtures 153 are spaced apart in the second direction and are respectively connected to the connecting tube 170. In this embodiment, the output positive electrode 141 and the output negative electrode 145 are respectively arranged on opposite sides of the main body of the circuit board 152, thereby expanding the distance between the output positive electrode 141 and the output negative electrode 145, ensuring the electrical clearance and creepage distance, and avoiding the risk of short circuit.

[0058] Optionally, the connecting pipe 170 includes an inlet manifold 171, an outlet manifold 172, multiple current collectors 173, and multiple connecting pipes 174. The current collectors 173 and connecting pipes 174 are alternately arranged along the second direction to connect multiple cold plates 175 in parallel. The inlet manifold 171 and the outlet manifold 172 are disposed at both ends of the current collectors 173 and connecting pipes 174. Disposing the connecting pipe 170 at one end of the housing 101 in the first direction, and at the same end as the first column 112, the second column 113, and the auxiliary support member 114, results in a compact structure, high space utilization, and ease of installation and maintenance.

[0059] It will be appreciated that adjacent current collectors 173 are connected by connecting tubes 174, and the current collectors 173 are connected to the cold plate 175. The cold plate 175 is positioned between the battery cells 120 to exchange heat across the battery's large surface area. In this embodiment, the battery cells 120 are cylindrical, meaning that the cold plate 175 contacts the cylindrical surface of the battery cells 120 for heat exchange, thereby improving heat exchange efficiency. Of course, in other embodiments, the battery cells 120 may also be prismatic, and this is not specifically limited here.

[0060] Optionally, multiple cold plates 175 are arranged in parallel. Multiple cold plates 175 are spaced apart along the second direction to form multiple accommodating spaces. Multiple batteries 120 form multiple rows of batteries 120 and are arranged in the accommodating space. Along the second direction, two adjacent rows of batteries 120 are staggered to form a avoidance portion 121, and multiple avoidance portions 121 are spaced apart along the second direction. The first column 112, the second column 113, the inlet manifold 171 and the outlet manifold 172 are respectively arranged in different avoidance portions 121. In this way, the space of the avoidance portion 121 formed by the staggered arrangement of the cylindrical batteries 120 at the end can be fully utilized, thereby improving space utilization and helping to improve the overall energy density of the battery pack 100. Optionally, the outlet manifold 172 and the auxiliary support member 114 are located in the same avoidance portion 121, making the structure more compact.

[0061] Optionally, the cold plate 175 is arranged in a wave shape, and the curvature of the cold plate 175 is adapted to the cylindrical surface of the battery 120. The cold plate 175 and the cylindrical surface of the battery 120 are bonded with a thermally conductive adhesive to improve heat exchange efficiency.

[0062] In this embodiment, the plurality of connecting tubes 174 are distributed in two layers in the height direction. The plurality of connecting tubes 174 in the upper layer are connected to the inlet main pipe 171, and the plurality of connecting tubes 174 in the lower layer are connected to the outlet main pipe 172. The arc-shaped opening 154 of the insulating fixture 153 faces downward so as to be sleeved on the connecting tubes 174 in the upper layer. The two insulating fixtures 153 are sleeved on two different connecting tubes 174 in the upper layer to achieve the spaced arrangement of the two connectors 151 in the second direction. It can be understood that an installation space is formed between two adjacent current collectors 173. The two connectors 151 are located in different installation spaces. The output positive electrode 141 and the output negative electrode 145 are respectively located in different installation spaces. With such a design, the connector 151 can be installed in the existing space on the connecting tube 174 without occupying other space, thereby saving overall space.

[0063] In this embodiment, the connecting tube 170 is provided with three current collectors 173 in the second direction. Two connecting tubes 174 are provided on the upper layer. One connecting tube 174 connects between the first two adjacent current collectors 173, and the other connecting tube 174 connects between the second two adjacent current collectors 173. In other words, the three current collectors 173 form two installation spaces. The output positive electrode 141 and a connector 151 are located in one installation space, while the output negative electrode 145 and the other connector 151 are located in another installation space.

[0064] The housing 101 includes an electrical compartment 103 and a battery compartment 102 that holds multiple batteries 120. The high-voltage integrated assembly 140, insulating support 111, low-voltage integrated assembly 150, and cooling assembly 160 are all located within the battery compartment 102. The connecting tube 170, connector 151, output positive electrode 141, and output negative electrode 145 are all located at the same end of the battery compartment 102. This battery pack 100 features a compact structure, high space utilization, high grouping efficiency, and easy assembly.

[0065] The battery pack 100 also includes a top cover 180 connected to the housing 101. The top cover 180 is used to seal the battery compartment 102 and the electrical compartment 103. Optionally, the top cover 180 and the housing 101 can be connected using bolts or screws. Alternatively, they can be connected using snap-fit, adhesive bonding, or welding, which are not specifically limited here.

[0066] Combine Figure 1Optionally, after the high-voltage integrated assembly 140 and the low-voltage integrated connection assembly are fixedly installed, the battery compartment 102 of the housing 101 is filled with foam 190. The foam 190 fills the entire battery compartment 102, securing and electrically insulating the batteries 120, high-voltage integrated assembly 140, low-voltage integrated assembly 150, cooling assembly 160, and other components within the housing 101, while also improving heat dissipation. It also improves the connection reliability of the high-voltage integrated assembly 140, low-voltage integrated assembly 150, cooling assembly 160, and other components, making connection failure less likely under extreme operating conditions. This reduces the risk of short circuits, overlaps, and arcing, thereby improving the safety of the battery pack 100. It will be appreciated that in this embodiment, the design of the first column 112, the second column 113, and the auxiliary support member 114, as well as the placement of the high-voltage integrated assembly 140, the low-voltage integrated assembly 150, and the cooling assembly 160 within the battery compartment 102, significantly reduces the amount of foam 190 used and reduces costs.

[0067] An embodiment of the present invention further provides an electrical device comprising the aforementioned battery pack 100. The battery pack 100 has high packing efficiency and space utilization, and the energy density of the battery pack 100 is high. If the electrical device is used in an electric vehicle, it can help extend the vehicle's range and significantly reduce production costs.

[0068] Optionally, the electrical device includes a device body and the battery pack 100 as described above. The device body and the battery pack 100 are electrically connected. The battery pack 100 is used to power the device body. The electrical device can be in various forms, such as mobile phones, portable devices, laptops, electric vehicles, electric vehicles, ships, spacecraft, electric toys, electric tools or various household appliances, etc. For example, spacecraft include airplanes, rockets, space shuttles and spacecraft, etc. Electric toys include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys and electric airplane toys, etc. Electric tools include metal cutting power tools, grinding power tools, assembly power tools and railway power tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators and electric planers, etc.

[0069] In summary, the battery pack 100 and the electrical device provided by the embodiments of the present invention have the following beneficial effects, including:

[0070] In the battery pack 100 provided by the embodiment of the present invention, the output positive electrode 141 and the output negative electrode 145 of the high-voltage integrated component 140 are respectively fixed on the insulating support 111 in the box body 101. The structure is reliably fixed and has good stability, which is conducive to reducing the risk of connection failure. The connector 151 of the low-voltage integrated component 150 is fixed on the connecting pipe 170 of the cooling component 160, with a compact structure and high space utilization. In the battery pack 100, the assembly structure of the high and low voltage integrated components 130 is simple, easy to operate, and has high grouping efficiency. And the connection is reliable and the space utilization is high, which is conducive to improving the energy density of the battery pack 100 and the safety of the whole pack. It can also reduce the use of foam glue 190, save costs, and greatly reduce production costs.

[0071] The electrical device provided in the embodiment of the present invention includes the above-mentioned battery pack 100. The battery pack 100 has high space utilization, high energy density, and good safety of the entire pack, which is conducive to improving battery life performance and saving costs.

[0072] The above description is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with this technical field within the technical scope disclosed by the present invention should be covered by the scope of protection of the present invention.

Claims

1. A battery pack, characterized in that: include: Box (101); A plurality of batteries (120), wherein the plurality of batteries (120) are arranged in the box (101), and the plurality of batteries (120) are connected in series and parallel; A high-voltage integrated component (140), the high-voltage integrated component (140) comprising an output positive electrode (141) and an output negative electrode (145), the output positive electrode (141) and the output negative electrode (145) being electrically connected to the battery (120) respectively; An insulating support body (111), the insulating support body (111) is arranged in the box body (101); the output positive electrode (141) and the output negative electrode (145) are respectively connected to the insulating support body (111); A low-voltage integrated component (150), the low-voltage integrated component (150) comprising a connector (151) and a circuit board (152), the circuit board (152) being electrically connected to the battery (120), and the connector (151) being electrically connected to the circuit board (152); A cooling assembly (160) includes a connecting pipe (170) and a cold plate (175) connected to each other. The cold plate (175) is arranged between the batteries (120). The connector (151) is connected to the connecting pipe (170).

2. The battery pack according to claim 1, wherein: The output positive electrode (141) includes a first connecting piece (142) and a first copper busbar (143); the output negative electrode (145) includes a second connecting piece (146) and a second copper busbar (147); the insulating support (111) includes a first column (112) and a second column (113) arranged at intervals; One end of the first connecting piece (142) along the first direction is electrically connected to the battery (120), and the other end of the first connecting piece (142) along the first direction is connected to the first copper busbar (143) and fixed to the first column (112); One end of the second connecting piece (146) along the first direction is electrically connected to the battery (120), and the other end of the second connecting piece (146) along the first direction is connected to the second copper busbar (147) and fixed on the second column (113).

3. The battery pack according to claim 2, wherein: An auxiliary support member (114) is also provided in the box body (101); one end of the second connecting piece (146) along the second direction is connected to the second column (113), and the other end is connected to the auxiliary support member (114); the connector (151) is led out from between the second column (113) and the auxiliary support member (114); and the second direction is perpendicular to the first direction.

4. The battery pack according to claim 2, wherein: The first connecting piece (142) is connected to the first column (112) along the center of the second direction, and the connector (151) is led out from between the first column (112) and the second column (113). The second direction is perpendicular to the first direction.

5. The battery pack according to claim 3 or 4, characterized in that: At least two low-voltage integrated components (150) are provided, and a connector (151) of each low-voltage integrated component (150) is provided at one end of the box (101), and the two connectors (151) are provided at intervals; the high-voltage integrated component (140) and the connector (151) are provided at the same end of the box (101), and the two connectors (151) are respectively provided alternately with the output positive electrode (141) and the output negative electrode (145).

6. The battery pack according to claim 1, wherein: The low-voltage integrated assembly (150) further includes an insulating fixing member (153), one end of the insulating fixing member (153) is connected to the connector (151), and the other end of the insulating fixing member (153) is connected to the connecting pipe (170).

7. The battery pack according to claim 6, characterized in that: The bottom of the insulating fixing member (153) is provided with an arc-shaped opening (154), the opening of the arc-shaped opening (154) is downwardly facing so as to be sleeved on the connecting pipe (170); the top of the insulating fixing member (153) is provided with a fixing plate (156), and the fixing plate (156) is used to fix the connector (151).

8. The battery pack according to claim 7, characterized in that: A reinforcing plate (155) is provided between the connector (151) and the fixing plate (156); a hook (157) is provided at one end of the fixing plate (156) for engaging the reinforcing plate (155); and an opening (1511) of the connector (151) faces the hook (157).

9. The battery pack according to claim 5, characterized in that: The connecting pipe (170) includes an inlet manifold (171), an outlet manifold (172), a plurality of fluid collectors (173), and a plurality of connecting pipes (174); the fluid collectors (173) and the connecting pipes (174) are alternately arranged along the second direction to connect a plurality of cold plates (175) in parallel, and the inlet manifold (171) and the outlet manifold (172) are arranged at both ends of the fluid collectors (173) and the connecting pipes (174); A plurality of cold plates (175) are arranged at intervals along the second direction to form a plurality of accommodating spaces, a plurality of the batteries (120) form a plurality of battery rows arranged in the accommodating spaces, and along the second direction, two adjacent battery rows are staggered to form avoidance portions (121), and the first column (112), the second column (113), the inlet manifold (171), and the outlet manifold (172) are respectively arranged in different avoidance portions (121).

10. An electrical device, characterized in that: A battery pack comprising the battery pack according to any one of claims 1 to 9.

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