Battery pack and powered device

Abstract

The application provides a battery pack and a power utilization 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.A plurality of batteries are arranged in the box body, and the plurality of batteries 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 to the batteries respectively.The insulating support body is arranged in the box body, and the output positive electrode and the output negative electrode are connected to the insulating support body respectively.The low-voltage integrated assembly comprises a connector and a circuit board, the circuit board is electrically connected to the batteries, and the connector and the circuit board are electrically connected.The cooling assembly comprises a connecting pipe and a cooling plate connected to each other, the cooling plate is arranged between the batteries, and the connector is connected to the connecting pipe.The battery pack has high group efficiency, compact structure, reliable connection and high space utilization, and is beneficial to improving the energy density and the overall safety of the battery pack.

Description

Technical Field

[0001] This invention relates to the field of battery technology, and more specifically, to a battery pack and an electrical device. Background Technology

[0002] The inventors' research revealed that existing complete machines and vehicles have high requirements for range and cost, making battery system safety a crucial and non-negligible aspect. Current cylindrical battery systems suffer from low space utilization within the pack during the assembly process of cylindrical cells, and the assembly procedure is complex. Under extreme operating conditions, the fixed structure connecting high and low voltages is at risk of failure, resulting in a relatively high safety risk for the battery system. Summary of the Invention

[0003] The present invention aims to provide a battery pack and power device that have high assembly efficiency, compact structure, reliable connection, and high space utilization, which is beneficial to improving the energy density of the battery pack and the overall safety of the 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] Multiple batteries are disposed inside the housing and connected in series and parallel.

[0008] A high-voltage integrated component, comprising a positive output terminal and a negative output terminal, wherein the positive output terminal and the negative output terminal are respectively electrically connected to the battery;

[0009] An insulating support body is disposed inside the housing; the positive output terminal and the negative output terminal are respectively connected to the insulating support body;

[0010] A low-voltage integrated assembly, comprising a connector and a circuit board, wherein the circuit board is electrically connected to the battery, and the connector and the circuit board are electrically connected;

[0011] A cooling assembly, comprising a connected connecting pipe and a cold plate, the cold plate being disposed between the batteries, and a connector being connected to the connecting pipe.

[0012] In an optional embodiment, the positive output terminal includes a first connecting piece and a first copper busbar; the negative output terminal includes a second connecting piece and a second copper busbar; and the insulating support includes a first column and a second column spaced apart.

[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 and fixed to the first copper busbar on 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 to the second column.

[0015] In an optional embodiment, the housing is further provided with an auxiliary support member, one end of the second connecting piece along the second direction is connected to the second column, and the other end is connected to the auxiliary support member, and the connector extends from between the second column and the auxiliary support member, wherein the second direction is perpendicular to the first direction.

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

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

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

[0019] In an optional embodiment, the bottom of the insulating fastener is provided with an arc-shaped opening, the opening of which faces downward to be fitted onto the connecting tube; the top of the insulating fastener is provided with a fixing plate, which is used to fix the connector.

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

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

[0022] Multiple cold plates are spaced apart along the second direction to form multiple receiving spaces. Multiple batteries are arranged in multiple battery rows in the receiving spaces. Along the second direction, two adjacent battery rows are staggered to form a clearance section. The first column, the second column, the inlet manifold and the outlet manifold are respectively arranged in different clearance sections.

[0023] Secondly, the present invention provides an electrical device comprising a battery pack as described in any of the foregoing embodiments.

[0024] The beneficial effects of the battery pack and power device provided in the embodiments of the present invention include:

[0025] The battery pack provided in this embodiment of the invention has its high-voltage integrated component's positive and negative output terminals fixed to insulating supports within the housing. This structure is reliably fixed, offers good stability, and helps reduce the risk of connection failure. The connector of the low-voltage integrated component is fixed to the connecting pipe of the cooling component, resulting in 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 assembly efficiency. Furthermore, the reliable connection and high space utilization contribute to improving the battery pack's energy density and overall safety.

[0026] The electrical device provided in this embodiment of the invention includes the battery pack described above. The battery pack has high space utilization, high energy density, and good overall safety, which helps to improve battery life and save costs. Attached Figure Description

[0027] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is an exploded view of the battery pack provided in this embodiment;

[0029] Figure 2 This is 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 This is an exploded structural diagram of the bottom support, battery, cooling assembly, high and low voltage integrated assembly and top cover of the battery pack provided in this embodiment;

[0031] Figure 4 This is a schematic diagram 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 showing the connection between the high-voltage integrated component and the insulating support of the battery pack provided in this embodiment.

[0034] Figure 7 This is a schematic diagram of the structure of the first connecting piece of the battery pack provided in this embodiment;

[0035] Figure 8 This is a schematic diagram of the structure of the second connecting piece of the battery pack provided in this embodiment;

[0036] Figure 9 This is a schematic diagram of the bottom support structure of the battery pack provided in this embodiment;

[0037] Figure 10 This is an exploded structural diagram of the low-voltage integrated component and cooling component of the battery pack provided in this embodiment;

[0038] Figure 11 This is a schematic diagram of the connection between the connector and the insulating fastener 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-Allowing part; 130-High and low voltage integrated assembly; 140-High voltage integrated assembly; 141-Output positive terminal; 142-First connecting piece; 1421-First mounting hole; 143-First copper busbar; 145-Output negative terminal; 146-Second connecting piece; 1461-Third mounting hole ; 1462 - Notch; 147 - Second copper busbar; 148 - First fastener; 149 - Second fastener; 150 - Low-voltage integrated assembly; 151 - Connector; 1511 - Opening; 152 - Circuit board; 153 - Insulating fastener; 154 - Arc-shaped opening; 155 - Reinforcing plate; 156 - Fixing plate; 157 - Hook; 158 - Hot riveting post; 160 - Cooling assembly; 170 - Connecting pipe; 171 - Inlet main pipe; 172 - Outlet main pipe; 173 - Current collector; 174 - Connecting pipe; 175 - Cold plate; 180 - Top cover; 190 - Foam. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0041] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0042] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0043] In the description of this invention, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of this invention is usually placed, they are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0044] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0045] It should be noted that, where there is no conflict, the features in the embodiments of the present invention can be combined with each other.

[0046] Combination Figures 1 to 3This invention provides a battery pack 100, comprising a housing 101, batteries 120, a high-voltage integrated assembly 140, an insulating support 111, a low-voltage integrated assembly 150, and a cooling assembly 160. Multiple batteries 120 are disposed within the housing 101 and connected in series and parallel. The high-voltage integrated assembly 140 includes a positive output terminal 141 and a negative output terminal 145, which are electrically connected to the batteries 120. The insulating support 111 is disposed within the housing 101; the positive output terminal 141 and the negative output terminal 145 are connected to the insulating support 111. The low-voltage integrated assembly 150 includes a connector 151 and a circuit board 152, which are electrically connected to the batteries 120, and the connector 151 and the circuit board 152 are also electrically connected. The cooling assembly 160 includes a connecting pipe 170 and a cold plate 175 connected together. The cold plate 175 is disposed between the batteries 120, and a connector 151 is connected to the connecting pipe 170. This battery pack 100 has high assembly efficiency, compact structure, reliable connection, and high space utilization, which is beneficial to improving the energy density and overall safety of the battery pack 100.

[0047] Combination Figures 4 to 6 In this embodiment, the positive output electrode 141 includes a first connecting piece 142 and a first copper busbar 143. The negative output 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 a 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 and fixed to the first copper busbar 143 on the first column 112.

[0048] Combination Figure 7 Optionally, the first connecting piece 142 has a first mounting hole 1421, and the first copper busbar 143 has a second mounting hole corresponding to the first mounting hole 1421. A first fixing member 148 passes through the first mounting hole 1421 and the second mounting hole and is fixedly connected to the first column 112. The first fixing member 148 can be a bolt, screw, or rivet, etc., and 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, resulting in a compact structure, reliable fixation, convenient installation, and the ability to 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 housing 101 and extends upwards from the bottom of the housing 101, allowing the first column 112 to simultaneously support and fix the first connecting piece 142 and the first copper busbar 143. The first column 112 occupies little space, making the overall layout more compact.

[0049] Combination 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, the second connecting piece 146 is provided with a third mounting hole 1461, and the second copper busbar 147 is provided with a fourth mounting hole corresponding to the third mounting hole 1461. The second fixing member 149 passes through the third mounting hole 1461 and the fourth mounting hole and is fixedly connected to the second column 113. The second fixing member 149 can be a bolt, screw, or rivet, etc., and 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, resulting in a compact structure, reliable fixation, convenient installation, and the ability to 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 housing 101 and extends upward from the bottom of the housing 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 little space, making the overall layout more compact.

[0050] Optionally, the housing 101 also includes an auxiliary support 114. 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 114. A connector 151 extends from between the second column 113 and the auxiliary support 114. The second direction is perpendicular to the first direction. Optionally, the first connecting piece 142 is connected to the first column 112 at its center along the second direction, and the connector 151 extends from between the first column 112 and the second column 113. The auxiliary support 114 is fixed to the bottom of the housing 101, extending upwards from the bottom. The auxiliary support 114 is positioned opposite to the second column 113 along the second direction, thus supporting and fixing the second connecting piece 146 at its opposite ends along the second direction. This ensures the stability of the second connecting piece 146 and prevents stress concentration and damage to the second connecting piece 146 caused by the second copper busbar 147 being fixed to one end of the second connecting piece 146.

[0051] It should be noted that, according to simulation experiments, during the operation of the battery pack 100, the temperature of the output positive electrode 141 is higher than that of the output negative electrode 145, meaning the temperature of the first connecting piece 142 is higher than that 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, which facilitates heat conduction and avoids excessive local temperature. Furthermore, in the second direction, the width of the first connecting piece 142 in the middle is wider, resulting in better current carrying capacity and facilitating the opening of the first mounting hole 1421 for connection with the first copper busbar 143, thus increasing structural strength and ensuring 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 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 to avoid the connector 151. Therefore, in the second direction, the second connecting piece 146 is characterized by a narrower width in the middle and a wider width at both ends. Connecting one end of the second copper busbar 147 and the second connecting piece 146 results in a larger connection area, more reliable electrical connection, greater mechanical strength of the connection structure, and a more stable structure.

[0052] It should be noted that, in addition to the first connecting piece 142 and the second connecting piece 146, the high-voltage integrated component 140 also has a number of other connecting pieces. These other connecting pieces are used to weld to the terminals of the battery 120 to realize the series and parallel connection of multiple batteries 120.

[0053] Combination Figure 9 Optionally, the housing 101 includes a bottom bracket 110. The battery 120 is mounted on the bottom bracket 110. Optionally, the bottom bracket 110 includes a positioning groove 115 for mounting and positioning the battery 120. Each battery 120 is positioned within one positioning groove 115. The first column 112, the second column 113, and the auxiliary support 114 are fixedly connected to the bottom bracket 110. The heights of the first column 112, the second column 113, and the auxiliary support 114 can be flexibly designed according to actual installation needs. The first column 112, the second column 113, and the auxiliary support 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 114 are arranged sequentially at intervals along the second direction. The first column 112 is used to support and fix the positive output electrode 141, and the second column 113 and the auxiliary support 114 are used to support and fix the negative output electrode 145. The first column 112, the second column 113, and the auxiliary support 114 occupy little space, which facilitates the layout and improves the overall structural compactness.

[0054] Combination Figure 2 , Figure 10 and Figure 11 Optionally, at least two low-voltage integrated components 150 are provided. The connector 151 of each low-voltage integrated component 150 is located at one end of the housing 101, and the two connectors 151 are spaced apart. The high-voltage integrated component 140 and the connector 151 are located at the same end of the housing 101, and the two connectors 151 are staggered with the output positive terminal 141 and the output negative terminal 145, respectively. It can be understood that of the two connectors 151, one is located between the output positive terminal 141 and the output negative terminal 145, and the other is located outside of the output positive terminal 141 and the output negative terminal 145. In this embodiment, the connector 151, the output positive terminal 141, the connector 151, and the output negative terminal 145 are arranged sequentially in the second direction. The distance between the output positive terminal 141 and the output negative terminal 145 is distributed as far as possible, ensuring the electrical clearance between the output positive terminal 141 and the output negative terminal 145 while providing sufficient installation space for the two connectors 151. Furthermore, the two connectors 151, the positive output 141, and the negative output 145 are all located at the same end of the enclosure 101, resulting in a reasonable spatial layout, compact structure, and ease of installation and maintenance. In addition, the high-voltage integrated component 140 and the low-voltage integrated component 150 do not interfere with each other, which helps to prevent electrical interference and short circuits.

[0055] Optionally, the low-voltage integrated assembly 150 further includes an insulating fastener 153, one end of which is connected to the connector 151, and the other end of which is connected to the connecting tube 170. Optionally, the bottom of the insulating fastener 153 has an arc-shaped opening 154, with the opening of the arc-shaped opening 154 facing downwards to fit over the connecting tube 170. The top of the insulating fastener 153 has a fixing plate 156. The fixing plate 156 is used to fix the connector 151, providing support and load-bearing capacity for the connector 151.

[0056] Optionally, 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 to engage the reinforcing plate 155, and the opening 1511 of the connector 151 faces the hook 157. In this embodiment, in the first direction, the hook 157 is provided at the end of the fixing plate 156 away from the battery 120. At the end opposite to the hook 157, a hot-riveting post 158 ​​is provided on the fixing plate 156 to further secure the connection between the reinforcing plate 155 and the fixing plate 156. This arrangement results in greater structural strength and more stable installation of the connector 151. The opening 1511 of the connector 151 faces the hook 157, i.e., towards the side of the fixing plate 156 away from the battery 120. This arrangement facilitates the connection between the connector 151 and external devices, making assembly easier and increasing grouping efficiency. Of course, the fixing plate 156 and the reinforcing plate 155 can also be connected by adhesive, bolts, welding, or other methods; no specific limitations are made here.

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

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

[0059] It is understood that adjacent current collectors 173 are connected by a connecting pipe 174, and the current collectors 173 are connected to the cold plate 175. The cold plate 175 is disposed between the batteries 120 for heat exchange on the large surface of the batteries. In this embodiment, the battery 120 is a cylindrical battery 120, that is, the cold plate 175 contacts the cylindrical surface of the battery 120 for heat exchange, so as to improve the heat exchange efficiency. Of course, in other embodiments, the battery 120 can also be a square battery 120, which is not specifically limited here.

[0060] Optionally, multiple cold plates 175 are arranged in parallel. The multiple cold plates 175 are spaced apart along a second direction to form multiple receiving spaces. Multiple batteries 120 are arranged in multiple battery rows within the receiving spaces. Along the second direction, adjacent battery rows 120 are staggered to form clearance portions 121. Multiple clearance portions 121 are spaced apart along the second direction, with the first column 112, the second column 113, the inlet manifold 171, and the outlet manifold 172 respectively located within different clearance portions 121. This fully utilizes the space of the clearance portions 121 formed by the staggered arrangement of the cylindrical batteries 120 at the ends, improving space utilization and contributing to increased overall energy density of the battery pack 100. Optionally, the outlet manifold 172 and the auxiliary support 114 are located within the same clearance portion 121, resulting in a more compact structure.

[0061] Optionally, the cold plate 175 is arranged in a wavy 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 together with thermally conductive adhesive to improve heat exchange efficiency.

[0062] In this embodiment, multiple connecting pipes 174 are distributed in two layers along the height direction. The upper layer of connecting pipes 174 connects to the inlet manifold 171, and the lower layer of connecting pipes 174 connects to the outlet manifold 172. The arc-shaped opening 154 of the insulating fastener 153 faces downward to be fitted onto the upper connecting pipe 174. Two insulating fasteners 153 are fitted onto two different connecting pipes 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 terminal 141 and the output negative terminal 145 are located in different installation spaces respectively. With this design, the connectors 151 can be installed in the existing space on the connecting pipes 174 without occupying other space, thus saving overall space.

[0063] In this embodiment, the connecting pipe 170 has three current collectors 173 in the second direction. Two connecting pipes 174 are provided on the upper layer. One connecting pipe 174 connects the first two adjacent current collectors 173, and the other connecting pipe 174 connects the last two adjacent current collectors 173. That is, the three current collectors 173 form two mounting spaces. The positive output 141 and a connector 151 are located in the same mounting space, while the negative output 145 and another connector 151 are located in the other mounting space.

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

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

[0066] Combination Figure 1Optionally, after the high-voltage integrated component 140 and the low-voltage integrated connection component are fixedly installed, expanding foam 190 is filled into the battery compartment 102 of the housing 101. The expanding foam 190 fills the entire battery compartment 102, which can fix and electrically insulate the battery 120, high-voltage integrated component 140, low-voltage integrated component 150, cooling component 160, etc., inside the housing 101, and improve heat dissipation performance. It can also improve the connection reliability of the high-voltage integrated component 140, low-voltage integrated component 150, cooling component 160, etc., making connection failure less likely under extreme operating conditions, reducing the risk of short circuits, arcing, etc., and improving the safety of the battery pack 100. It can be understood that in this embodiment, the design of the first column 112, the second column 113, and the auxiliary support 114, and the placement of the high-voltage integrated component 140, low-voltage integrated component 150, and cooling component 160 all within the battery compartment 102, greatly reduces the amount of expanding foam 190 used, thus lowering costs.

[0067] This invention also provides an electrical device including the aforementioned battery pack 100. It features high assembly efficiency, high space utilization, and high energy density. If the electrical device is used in an electric vehicle, it helps to extend the vehicle's driving range and significantly reduce production costs.

[0068] Optionally, the electrical device includes a device body and a battery pack 100 as described above. The device body and the battery pack 100 are electrically connected. The battery pack 100 supplies power to the device body. The electrical device can take many forms, such as mobile phones, portable devices, laptops, electric vehicles, electric cars, ships, spacecraft, electric toys, power tools, or various household appliances. For example, spacecraft include airplanes, rockets, space shuttles, and spacecraft. Electric toys include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys. Power 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.

[0069] In summary, the battery pack 100 and the power-consuming device provided in the embodiments of the present invention have the following beneficial effects, including:

[0070] In the battery pack 100 provided by this embodiment, the positive output electrode 141 and negative output electrode 145 of the high-voltage integrated component 140 are respectively fixed on the insulating support 111 inside the housing 101. The structure is reliably fixed and has good stability, which helps reduce 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, resulting in a compact structure and high space utilization. In this battery pack 100, the assembly structure of the high and low voltage integrated components 130 is simple, easy to operate, and has high assembly efficiency. Furthermore, the connection is reliable, and the space utilization is high, which helps improve the energy density and overall safety of the battery pack 100. It also reduces the amount of expanding foam 190 used, saving costs and significantly reducing production costs.

[0071] The power device provided in this embodiment of the invention includes the battery pack 100 described above. The battery pack 100 has high space utilization, high energy density, and good overall safety, which helps to improve battery life and save costs.

[0072] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A battery pack, characterized in that, include: Box (101); Multiple batteries (120) are disposed inside the housing (101) and are connected in series and parallel. A high-voltage integrated component (140) includes an output positive electrode (141) and an output negative electrode (145), which are electrically connected to the battery (120) respectively. An insulating support (111) is disposed inside the housing (101); the positive output electrode (141) and the negative output electrode (145) are respectively connected to the insulating support (111). A low-voltage integrated assembly (150) includes a connector (151), an insulating fastener (153), and a circuit board (152), wherein 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 pipe (170) and a cold plate (175) connected together. The cold plate (175) is disposed between the batteries (120). One end of the insulating fastener (153) is connected to the connector (151), and the other end of the insulating fastener (153) is connected to the connecting pipe (170).

2. The battery pack according to claim 1, characterized in that, The positive output terminal (141) includes a first connecting piece (142) and a first copper busbar (143); the negative output terminal (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 and fixed to the first copper busbar (143) on the first column (112); The second connecting piece (146) is electrically connected to the battery (120) at one end along the first direction, and the second connecting piece (146) is connected to the second copper busbar (147) and fixed on the second column (113) at the other end along the first direction.

3. The battery pack according to claim 2, characterized in that, The housing (101) is also provided with an auxiliary support (114). 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 (114). The connector (151) is led out from between the second column (113) and the auxiliary support (114). The second direction is perpendicular to the first direction.

4. The battery pack according to claim 2, characterized in that, The first connecting piece (142) is connected to the first column (112) at the center along the second direction, and the connector (151) extends from between the first column (112) and the second column (113), the second direction being 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. The connector (151) of each low-voltage integrated component (150) is provided at one end of the housing (101), and the two connectors (151) are spaced apart. The high-voltage integrated component (140) and the connector (151) are provided at the same end of the housing (101), and the two connectors (151) are respectively staggered with the output positive terminal (141) and the output negative terminal (145).

6. The battery pack according to claim 1, characterized in that, The bottom of the insulating fastener (153) is provided with an arc-shaped opening (154), the opening of the arc-shaped opening (154) faces downward so as to be fitted onto the connecting tube (170); the top of the insulating fastener (153) is provided with a fixing plate (156), the fixing plate (156) is used to fix the connector (151).

7. The battery pack according to claim 6, 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) to engage the reinforcing plate (155). The opening (1511) of the connector (151) faces the hook (157).

8. The battery pack according to claim 5, characterized in that, The connecting pipe (170) includes an inlet manifold (171), an outlet manifold (172), multiple collectors (173), and multiple connecting pipes (174); the collectors (173) and the connecting pipes (174) are alternately arranged along the second direction to connect multiple cold plates (175) in parallel, and the inlet manifold (171) and the outlet manifold (172) are located at both ends of the collectors (173) and the connecting pipes (174); Multiple cold plates (175) are spaced apart along the second direction to form multiple receiving spaces. Multiple batteries (120) are arranged in multiple battery rows in the receiving spaces. Along the second direction, two adjacent battery rows are staggered to form a clearance section (121). The first column (112), the second column (113), the inlet manifold (171), and the outlet manifold (172) are respectively arranged in different clearance sections (121).

9. An electrical device, characterized in that, The battery pack includes any one of claims 1 to 8.

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