Battery pack and electric device

Abstract

The invention provides a battery pack and an electric device, and relates to the technical field of battery packs. The battery pack comprises a box body, a plurality of batteries, a high-voltage assembly, a low-voltage assembly and a heat management assembly, a baffle is arranged in the box body so that the containing cavity can be divided into a first cavity body and a second cavity body. The baffle is provided with a plurality of through holes. The plurality of batteries are arranged in the first cavity. One end of the high-voltage connecting bar is electrically connected with the battery, and the other end penetrates through the through hole and extends into the second cavity. The circuit board is electrically connected with the battery, the low-voltage connector is connected with the circuit board, one end of the low-voltage wire harness is connected with the low-voltage connector, and the other end of the low-voltage wire harness penetrates through the through hole and extends into the second cavity. The cold plate is connected with the collecting pipe, and the collecting pipe is connected with the liquid inlet pipe and the liquid outlet pipe. The cold plate is arranged among the plurality of batteries; the liquid inlet pipe and the liquid outlet pipe respectively penetrate through the through holes and are led out from the second cavity; and the low-voltage connector is arranged on the collecting pipe. The battery pack is compact in structure, reasonable in layout and high in space utilization rate.

Description

Technical Field

[0001] The present invention relates to the technical field of battery packs, 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 battery life and cost, making battery system safety a crucial component that cannot be ignored. Current cylindrical battery systems suffer from low internal pack space utilization during the cylindrical cell assembly process, and the assembly process is complex, leaving room for improvement in the overall energy density of the battery pack. Summary of the Invention

[0003] The object of the present invention is to provide a battery pack and an electrical device with reasonable spatial layout, compact structure, high space utilization, which is conducive to improving the overall energy density of the battery pack.

[0004] In a first aspect, the present invention provides a battery pack, comprising:

[0005] A box body, the box body having a receiving cavity; a baffle is provided in the box body, the baffle dividing the receiving cavity into a first cavity and a second cavity;

[0006] The baffle is provided with a first through hole, a second through hole and a third through hole;

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

[0008] a high-voltage assembly, the high-voltage assembly comprising a high-voltage connecting bar; one end of the high-voltage connecting bar is electrically connected to the battery, and the other end of the high-voltage connecting bar extends through the first through hole into the second cavity;

[0009] a low-voltage assembly, the low-voltage assembly comprising a circuit board, a low-voltage connector, and a low-voltage wiring harness; the circuit board being electrically connected to the battery, the low-voltage connector being connected to the circuit board, one end of the low-voltage wiring harness being connected to the low-voltage connector, and the other end extending through the second through hole into the second cavity;

[0010] A thermal management component, the thermal management component includes a cold plate, a manifold, a liquid inlet pipe and a liquid outlet pipe; the cold plate is connected to the manifold, and the manifold is respectively connected to the liquid inlet pipe and the liquid outlet pipe; the cold plate is arranged between the multiple batteries; the liquid inlet pipe and the liquid outlet pipe respectively pass through the third through hole and are led out from the second cavity; the low-voltage connector is arranged on the manifold.

[0011] In an optional embodiment, a sealing sleeve is provided on the baffle, and the sealing sleeve is provided with the first through hole, and / or the second through hole, and / or the third through hole; the hole walls of the first through hole, the second through hole and the third through hole are respectively provided with cutouts.

[0012] In an optional embodiment, the incision includes a first incision, a second incision, and a third incision;

[0013] The first through hole is rectangular, a first incision is provided on a long side of the rectangle, and a second incision is provided on a short side of the rectangle; the length of the first incision is greater than the length of the second incision;

[0014] And / or, the second through hole is circular or elliptical, and a plurality of third cutouts are provided on the hole wall of the second through hole along the circumferential direction.

[0015] In an optional embodiment, the low-voltage component further includes an insulating fixing piece, and the low-voltage connector is arranged on the insulating fixing piece; the insulating fixing piece is provided with a bayonet, and the bayonet is sleeved on the manifold.

[0016] In an optional embodiment, an insulating support column is provided in the box body, and the high-voltage component also includes a metal sheet, one end of the metal sheet along the first direction is electrically connected to the battery, and the other end is connected to the high-voltage connection bar; and the metal sheet and the high-voltage connection bar are both fixed on the insulating support column.

[0017] In an optional embodiment, the box body is provided with a limiting column, one end of the metal sheet along the second direction is connected to the high-voltage connection bar, and the other end is connected to the limiting column; the first direction and the second direction are perpendicular.

[0018] In an optional embodiment, the baffle has relative top and bottom in the height direction; the axis of the first through hole and the axis of the second through hole are located in the same height plane and are both close to the top of the baffle; the third through hole is close to the bottom of the baffle.

[0019] In an optional embodiment, the box further includes a first cover plate and a second cover plate, the first cover plate is provided to cover the first cavity, and the second cover plate is provided to cover the second cavity;

[0020] The top of the baffle is provided with a first mounting portion and a second mounting portion, and the first mounting portion and the second mounting portion are alternately distributed; the first mounting portion is connected to the first cover plate; the second mounting portion is connected to the second cover plate; and the ends of the first cover plate and the second cover plate that are close to each other are provided with staggered giveway grooves.

[0021] In an optional embodiment, a mounting bracket is provided on a side of the baffle close to the second cavity, and the low-voltage wiring harness is fixed on the mounting bracket after passing through the second through hole.

[0022] In a second aspect, the present invention provides an electrical device comprising the battery pack according to any one of the aforementioned embodiments.

[0023] The battery pack and power-consuming device provided by the embodiments of the present invention have the following beneficial effects:

[0024] In the battery pack provided by an embodiment of the present invention, a through hole connecting the first cavity and the second cavity is provided on the baffle, which is convenient for the high-voltage connection bar, low-voltage wiring harness, liquid inlet pipe and liquid outlet pipe to pass through. The low-voltage connector is arranged on the manifold, which saves space and is easy to install, thereby improving the space utilization of the first cavity and having a compact structure, which is conducive to improving the space utilization of the box, thereby helping to improve the energy density of the entire battery pack.

[0025] The electric device provided by the embodiment of the present invention includes the above-mentioned battery pack, which has a compact structure and high energy density, and is conducive to extending the driving range. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1 A schematic structural diagram of a battery pack provided in an embodiment of the present invention;

[0028] Figure 2 A schematic diagram of the disassembled structure of a battery pack provided in an embodiment of the present invention;

[0029] Figure 3 A schematic structural diagram of a battery pack box provided in an embodiment of the present invention;

[0030] Figure 4 A schematic structural diagram of a baffle of a battery pack provided in an embodiment of the present invention;

[0031] Figure 5 A schematic diagram of the distribution structure of high-voltage components and low-voltage components of a battery pack provided in an embodiment of the present invention;

[0032] Figure 6 A schematic structural diagram of a sealing sleeve on a baffle of a battery pack provided in an embodiment of the present invention;

[0033] Figure 7A schematic structural diagram of a second through hole of a sealing sleeve on a baffle of a battery pack provided by an embodiment of the present invention;

[0034] Figure 8 A schematic diagram of the disassembled structure of the low-voltage component and thermal management component of the battery pack provided in an embodiment of the present invention;

[0035] Figure 9 A schematic structural diagram of an insulating fixing member of a battery pack provided in an embodiment of the present invention;

[0036] Figure 10 A schematic diagram of the fixing structure of the high-voltage component and the low-voltage component of the battery pack provided in an embodiment of the present invention;

[0037] Figure 11 A schematic structural diagram of a bottom bracket of a battery pack provided in an embodiment of the present invention;

[0038] Figure 12 A schematic diagram of the structure of the high-voltage component and the low-voltage component of the battery pack provided in an embodiment of the present invention;

[0039] Figure 13 A schematic structural diagram of a baffle of a battery pack provided by an embodiment of the present invention from another perspective;

[0040] Figure 14 A schematic structural diagram of a first cover plate of a battery pack provided in an embodiment of the present invention;

[0041] Figure 15 A schematic structural diagram of a second cover plate of a battery pack provided by an embodiment of the present invention;

[0042] Figure 16 A schematic diagram of a first structure of a mounting bracket on a baffle of a battery pack provided by an embodiment of the present invention;

[0043] Figure 17 A schematic diagram of a second structure of the mounting bracket on the baffle of the battery pack provided in an embodiment of the present invention.

[0044] Icons: 200-battery pack; 210-battery; 220-high-voltage connecting bar; 221-first metal sheet; 222-second metal sheet; 223-fastener; 230-low-voltage component; 231-low-voltage connector; 232-circuit board; 240-thermal management component; 241-cold plate; 242-manifold; 243-liquid inlet pipe; 244-liquid outlet pipe; 245-current collector; 110-housing; 101-accommodating chamber; 102-first cavity; 103-second cavity; 120-baffle; 121-first through hole; 122-second through hole; 123-third through hole; 124-first fixing hole; 125-second fixing hole; 130-sealing sleeve; 131-incision; 132-first incision; 13 3-Second incision; 134-Third incision; 140-Insulating fixing piece; 141-Snap-on; 142-Fixing plate; 143-Reinforcement plate; 144-Hook; 145-Hot riveting column; 150-Bottom bracket; 151-Positioning groove; 152-First column; 153-Second column; 154-Limiting column; 155-Limiting boss; 160-First cover plate; 161-First protrusion; 162-Third fixing hole; 170-Second cover plate; 171-Second protrusion; 172-Fourth fixing hole; 165-Give way groove; 180-Mounting bracket; 181-First segment; 182-Second segment; 183-Third segment; 184-First bending portion; 185-Second bending portion; 190-Wire harness holder. DETAILED DESCRIPTION

[0045] 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.

[0046] 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 shall fall within the scope of protection of the present invention.

[0047] 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.

[0048] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" and the like indicate positions or locations based on the positions shown in the accompanying drawings, or the positions or locations in which the inventive product is typically placed when in use. These terms are intended solely to facilitate the description of the present invention and to simplify the description, and are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third," etc., are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0049] Furthermore, terms such as "horizontal," "vertical," and "overhanging" do not necessarily imply that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0050] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0051] The following embodiments of the present invention are described in detail with reference to the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments may be combined with each other.

[0052] Combine Figures 1 to 5 The battery pack 200 proposed in the embodiment of the present invention optimizes the spatial layout of the high-voltage components, low-voltage components 230, and thermal management components 240. This results in a compact structure and a more rational layout, which helps improve space utilization and thus enhance the energy density of the battery pack 200. Furthermore, it is easy to install, which helps improve assembly efficiency.

[0053] The battery pack 200 includes a housing 110, a plurality of batteries 210, a high-voltage component, a low-voltage component 230, and a thermal management component 240. The housing 110 has a receiving cavity 101 with an opening on one side. A baffle 120 is provided in the housing 110, which divides the receiving cavity 101 into a first cavity 102 and a second cavity 103. The first cavity 102 is used as a battery 210 compartment for placing a plurality of batteries 210. The second cavity 103 is used as an electrical compartment for installing electrical components such as the BDU electronic control unit. The baffle 120 is provided with a first through hole 121, a second through hole 122, and a third through hole 123, which can connect the first cavity 102 and the second cavity 103 to facilitate the installation of cross-regional components such as the high-voltage connecting bar 220, the low-voltage wiring harness, the liquid inlet pipe 243, and the liquid outlet pipe 244. A plurality of batteries 210 are provided in the first cavity 102, and the plurality of batteries 210 are connected in series and parallel to form a group. The high-voltage assembly includes a high-voltage connection bar 220. One end of the high-voltage connection bar 220 is electrically connected to the battery 210, and the other end extends through the first through-hole 121 into the second cavity 103, connecting to the electrical components in the second cavity 103. The low-voltage assembly 230 includes a circuit board 232, a low-voltage connector 231, and a low-voltage wiring harness. The circuit board 232 is electrically connected to the battery 210, and the low-voltage connector 231 is connected to the circuit board 232. One end of the low-voltage wiring harness is connected to the low-voltage connector 231, and the other end extends through the second through-hole 122 into the second cavity 103. The thermal management assembly 240 includes a cold plate 241, a manifold 242, a liquid inlet pipe 243, and a liquid outlet pipe 244. The cold plate 241 is connected to the manifold 242, and the manifold 242 is connected to the liquid inlet pipe 243 and the liquid outlet pipe 244, respectively. The cold plate 241 is positioned between the multiple batteries 210 to provide thermal management for the batteries 210, ensuring that the batteries 210 operate within an appropriate temperature range and improving their reliability. The inlet pipe 243 and outlet pipe 244 each pass through the third through-hole 123 and exit the second chamber 103. The inlet pipe 243 and outlet pipe 244 are used to circulate a heat exchange medium into the cold plate 241. Heat exchange media include, but are not limited to, gas or liquid. A manifold 242 is positioned at the end of the first chamber 102 near the baffle 120 to connect the inlet pipe 243 and outlet pipe 244, shortening the pipe connection path and facilitating the securement of the low-pressure connector 231. The low-pressure connector 231 can be directly secured to the manifold 242, providing easy installation and reliable fixation. The existing space on the manifold 242 is utilized to install and position the low-pressure connector 231, eliminating the need for additional space. This creates a compact structure and contributes to improved overall energy density.

[0054] The baffle 120 is provided with a sealing sleeve 130, which is provided with a first through hole 121, and / or a second through hole 122, and / or a third through hole 123. The first through hole 121 can directly correspond to the high-voltage connection bar 220, so as to shorten the length of the high-voltage connection bar 220, thereby reducing resistance, improving heat dissipation performance, reducing the vibration swing range, and improving structural stability. The second through hole 122 can directly correspond to the low-voltage wiring harness, so as to shorten the wiring harness length, avoid wiring harness congestion, facilitate spatial layout, and improve assembly efficiency. The two third through holes 123 can directly correspond to the liquid inlet pipe 243 and the liquid outlet pipe 244 respectively. The position of the third through holes 123 can be adjusted according to the position of the liquid inlet pipe 243 and the liquid outlet pipe 244, thereby shortening the length of the liquid inlet pipe 243 and the liquid outlet pipe 244, avoiding the bending of the liquid inlet pipe 243 and the liquid outlet pipe 244 to reduce flow resistance and cause fluid retention, thereby improving the cooling effect. Preferably, the liquid inlet pipe 243 and the liquid outlet pipe 244 respectively pass directly through the third through hole 123 and are directly led out from the second cavity 103, that is, the liquid inlet pipe 243 and the liquid outlet pipe 244 extend along the first direction in the second cavity 103, and the liquid inlet pipe 243 and the liquid outlet pipe 244 can pass through the third through hole 123 and then directly penetrate the side wall of the box body 110 along the first direction, further reducing the bending of the liquid inlet pipe 243 and the liquid outlet pipe 244, improving the heat exchange efficiency, and also helping to reduce the occupied space in the second cavity 103.

[0055] It should be noted that the number of sealing sleeves 130 can be flexibly set and can be one or more. Multiple sealing sleeves 130 and multiple through holes on the baffle 120 can be set in a one-to-one correspondence. Alternatively, one sealing sleeve 130 can be laid in correspondence with multiple through holes on the baffle 120. According to actual needs, each sealing sleeve 130 can be provided with one or more through holes for the installation components to pass through, which is not specifically limited here. In this embodiment, three sealing sleeves 130 are provided. One of the sealing sleeves 130 is provided with two first through holes 121 and two second through holes 122, and the two first through holes 121 and the two second through holes 122 are alternately arranged along the second direction on the baffle 120, and the second direction is the length direction of the baffle 120. The other two sealing sleeves 130 are respectively provided with a third through hole 123.

[0056] The walls of the first through-hole 121, the second through-hole 122, and the third through-hole 123 are each provided with a notch 131. It is understood that during the assembly process of the battery pack 200, the first cavity 102 will be filled with foam. The foam provides bonding, insulation, heat dissipation, and cushioning. The provision of the sealing sleeve 130 prevents the foam in the first cavity 102 from overflowing into the second cavity 103, thereby improving the sealing of the cross-sectional connection. By providing the notch 131 in the sealing sleeve 130, the installation of the high-voltage connecting bar 220, the low-voltage wiring harness, the liquid inlet pipe 243, and the liquid outlet pipe 244 in the first through hole 121, the second through hole 122, and the third through hole 123 can be facilitated, thereby improving the convenience of cross-regional component installation. At the same time, when any of the high-voltage connecting bar 220, the low-voltage wiring harness, the liquid inlet pipe 243, and the liquid outlet pipe 244 are deformed, the corresponding through hole can be used for buffering, thereby preventing damage or deformation of the high-voltage connecting bar 220, the low-voltage wiring harness, the liquid inlet pipe 243, and the liquid outlet pipe 244 caused by vibration and other reasons, thereby reducing installation risks. It should be noted that the width of the notch 131 is relatively small, which not only improves installation convenience but also prevents foam glue from overflowing. In this embodiment, the sealing sleeve 130 is made of silicone rubber, which has a certain degree of viscosity. This can improve the sealing at the notch 131 and also facilitate installation. The width of the notch 131 is approximately 0.5 mm.

[0057] Combine Figure 6 Optionally, the incision 131 includes a first incision 132, a second incision 133 and a third incision 134. The first through hole 121 is rectangular, which is convenient for the high-voltage connection row 220 to pass through. The long side of the rectangle is provided with a first incision 132, and the short side of the rectangle is provided with a second incision 133. The length of the first incision 132 is greater than the length of the second incision 133. In this way, the first incision 132 extends along the height direction of the baffle 120, and the first incision 132 is longer, which is conducive to expanding the installation space in the vertical direction (height direction) and improving the convenience of installation. The vertical direction is close to the opening of the accommodating cavity 101, and the vertical direction is easier to install than the horizontal direction (width direction). In this embodiment, the second incision 133 extends in the horizontal direction.

[0058] Optionally, there may be one or more first cutouts 132. If there are multiple cutouts, the multiple first cutouts 132 are evenly spaced. There may be one or more second cutouts 133. If there are multiple cutouts, the multiple second cutouts 133 are evenly spaced. This helps improve the uniformity of force applied to the sealing sleeve 130 and prevents localized excessive deformation, thereby enhancing both installation convenience and sealing performance. In this embodiment, the number of first cutouts 132 is greater than the number of second cutouts 133, with the number of first cutouts 132 ranging from two to five.

[0059] It is understood that the cross-sectional shape of the first through-hole 121 is designed based on the cross-sectional shape of the actual cross-sectional area component. In this embodiment, the cross-sectional shape of the first through-hole 121 is adapted to the cross-sectional shape of the high-voltage connection bar 220. Since there are two high-voltage connection bars 220, one positive and one negative, the number of first through-holes 121 is two, and the two first through-holes 121 are spaced apart to maintain an electrical safety distance and prevent contact and short circuits.

[0060] Optionally, the second through-hole 122 is circular or elliptical in shape, and the wall of the second through-hole 122 is provided with a plurality of third cutouts 134 along the circumference. The third cutouts 134 extend radially from the second through-hole 122 in a "M" shape. The multiple third cutouts 134 are evenly spaced to improve the uniformity of force distribution and the sealing performance of the sealing sleeve 130. It should be understood that the circular or elliptical cross-section of the second through-hole 122 better conforms to the low-voltage wiring harness, thereby ensuring good low-voltage wiring harness flow while maintaining the sealing performance of the sealing sleeve 130.

[0061] Combine Figure 7 Alternatively, considering that the low-voltage wiring harness is a flexible component, it can abut against the lower wall of the second through-hole 122 through its own weight, providing a seal. Furthermore, the lower wall of the second through-hole 122 provides some support for the low-voltage wiring harness. Therefore, when designing the third notch 134, the lower peripheral wall of the second through-hole 122 may not have the third notch 134. In other words, the third notch 134 can be provided only along the upper wall of the second through-hole 122. This provides both support and improved sealing.

[0062] Taking the midline of the second through hole 122 in the width direction of the baffle 120 as a reference, the third notch 134 may not be provided when the lower side deviates from the midline by 0 to 80 degrees. Of course, the angle range of the deviation from the midline can be flexibly adjusted. For example, the third notch 134 may not be provided when the lower side deviates from the midline by 30 degrees or within 50 degrees, which is not specifically limited here.

[0063] Optionally, the lengths of the plurality of third cutouts 134 are unequal, and the plurality of third cutouts 134 are symmetrically distributed about the center line of the second through hole 122 in the width direction of the baffle 120. The closer to the center line, the longer the length of the third cutout 134; the farther away from the center line, the shorter the length of the third cutout 134. Due to the gravity of the low-voltage wiring harness itself, the force on the lower side of the second through hole 122 is greater than the force on the upper side. Therefore, the third cutout 134 near the upper side of the center line can be longer, which is conducive to expanding the installation space in the vertical direction. This arrangement can not only improve the passability of the low-voltage wiring harness and facilitate installation, but also ensure sealing performance and prevent colloid overflow.

[0064] Combine Figures 8 to 10Optionally, the low-voltage assembly 230 further includes an insulating fixture 140, on which the low-voltage connector 231 is mounted. The insulating fixture 140 is provided with a bayonet 141, which is sleeved onto the manifold 242. In this embodiment, the bottom of the insulating fixture 140 is provided with an arcuate bayonet 141, with the opening of the arcuate bayonet 141 facing downward so as to sleeve onto the connecting pipe. A fixing plate 142 is provided at the top of the insulating fixture 140. The fixing plate 142 is used to secure the low-voltage connector 231, providing support and bearing for the low-voltage connector 231.

[0065] Optionally, a reinforcement plate 143 is provided between the low-voltage connector 231 and the fixing plate 142. A hook 144 is provided at one end of the fixing plate 142 to engage the reinforcement plate 143, with the opening of the low-voltage connector 231 facing the hook 144. In this embodiment, the hook 144 is provided on the end of the fixing plate 142 facing away from the battery 210 in the thickness direction of the baffle 120. On the end of the fixing plate 142 opposite the hook 144, a heat rivet stud 145 is provided to further securely connect the reinforcement plate 143 and the fixing plate 142. This arrangement provides greater structural strength and more stable connector installation. The opening of the low-voltage connector 231 faces the hook 144, that is, toward the side of the fixing plate 142 facing away from the battery 210. This arrangement facilitates the connection between the low-voltage connector 231 and the low-voltage wiring harness, facilitating assembly and increasing assembly efficiency. Of course, the fixing plate 142 and the reinforcement plate 143 may also be connected by bonding, bolting, welding, or other methods, which are not specifically limited here.

[0066] Combine Figure 11 and Figure 12 Optionally, a bottom bracket 150 is provided in the housing 110 . The batteries 210 are mounted on the bottom bracket 150 . The bottom bracket 150 is provided with positioning grooves 151 , which are used to mount and position the batteries 210 . Each battery 210 is positioned in a positioning groove 151 .

[0067] An insulating support column is provided on the bottom bracket 150, and the high-voltage component also includes a metal sheet. One end of the metal sheet along the first direction is electrically connected to the battery 210, and the other end is connected to the high-voltage connecting bar 220; and the metal sheet and the high-voltage connecting bar 220 are both fixed on the insulating support column. In this embodiment, the high-voltage component includes two high-voltage connecting bars 220 and two metal sheets, namely a first connecting bar, a second connecting bar, a first metal sheet 221 and a second metal sheet 222. The first connecting bar serves as the positive electrode, and the second connecting bar serves as the negative electrode. The first connecting bar is connected to the first metal sheet 221, and the second connecting bar is connected to the second metal sheet 222. The insulating support column includes a first column 152 and a second column 153 arranged at intervals.

[0068] Specifically, one end of the first metal sheet 221 along the first direction is electrically connected to the battery 210, and the other end is connected to the first connecting row. The first direction is the thickness direction of the baffle 120. The end of the first connecting row away from the first metal sheet 221 extends through the first through-hole 121 into the second cavity 103 and is connected to other electrical components. A first mounting hole is respectively provided on the first connecting row and the first metal sheet 221, and a second mounting hole is provided on the first column 152. Fasteners 223 such as bolts pass through the first mounting holes on the first connecting row and the first metal sheet 221 and the second mounting holes on the first column 152 in sequence to fix the first connecting row and the first metal sheet 221 on the first column 152 at the same time. And it can achieve electrical connection between the first connecting row and the first metal sheet 221.

[0069] Similarly, one end of the second metal sheet 222 along the first direction is electrically connected to the battery 210, and the other end is connected to the second connection bar. The end of the second connection bar away from the second metal sheet 222 extends through the first through-hole 121 into the second cavity 103 and is connected to other electrical components. A third mounting hole is provided on each of the second connection bar and the second metal sheet 222, and a fourth mounting hole is provided on the second column 153. Fasteners 223, such as bolts, pass through the third mounting holes on the second connection bar and the second metal sheet 222 and the fourth mounting holes on the second column 153 in sequence to simultaneously fix the second connection bar and the second metal sheet 222 to the second column 153. This can also achieve electrical connection between the second connection bar and the second metal sheet 222.

[0070] Optionally, the housing 110 is provided with a retaining post 154. One end of the metal sheet along the second direction is connected to the high-voltage connection bar 220, and the other end is connected to the retaining post 154. The first and second directions are perpendicular. In this embodiment, the second direction is the width of the baffle 120. The second metal sheet 222 is connected to the second connection bar at one end along the second direction, and to the retaining post 154 at the other end. This arrangement improves the connection stability of the second connection bar and provides a more reliable structure.

[0071] Optionally, there are two low-pressure connectors 231, one extending from between the first column 152 and the second column 153, and the other extending from between the second column 153 and the limiting column 154. In this way, the two low-pressure connectors 231 are spaced apart and spaced apart from the two high-pressure connection bars 220, respectively, ensuring safety and reliability without interfering with each other.

[0072] Optionally, the bottom bracket 150 is further provided with a limiting boss 155. The thermal management assembly 240 also includes current collectors 245, each of which is connected to a cold plate 241. Adjacent current collectors 245 are connected via manifolds 242. The limiting boss 155 abuts against the current collectors 245 to limit their installation position.

[0073] Combine Figures 13 to 15 Optionally, the baffle 120 has a top and bottom relative to each other in the height direction. The axis of the first through hole 121 and the axis of the second through hole 122 are located in the same height plane and are both close to the top of the baffle 120; the third through hole 123 is close to the bottom of the baffle 120. In this way, the high-pressure assembly and the low-pressure assembly 230 are arranged above the thermal management assembly 240, saving space in the first direction of the housing 110, resulting in a compact structure and high space utilization.

[0074] Optionally, the box body 110 further includes a first cover plate 160 and a second cover plate 170. The first cover plate 160 is provided to cover the first cavity 102, and the second cover plate 170 is provided to cover the second cavity 103. The first cover plate 160 and the second cover plate 170 are provided independently of each other. When performing maintenance or replacement at a later stage, the first cover plate 160 or the second cover plate 170 can be removed separately, which facilitates installation and disassembly, saves time and effort.

[0075] The top of the baffle 120 is provided with a first mounting portion and a second mounting portion, which are arranged alternately. The first mounting portion is connected to the first cover plate 160, and the second mounting portion is connected to the second cover plate 170. The first mounting portion includes a plurality of first fixing holes 124, and the second mounting portion includes a plurality of second fixing holes 125. The plurality of first fixing holes 124 and the plurality of second fixing holes 125 are arranged in a single row in the second direction. Furthermore, the plurality of first fixing holes 124 and the plurality of second fixing holes 125 are arranged alternately.

[0076] Optionally, staggered clearance grooves 165 are provided at the ends of the first cover plate 160 and the second cover plate 170 that are adjacent to each other. The first cover plate 160 is provided with a plurality of first protrusions 161, and clearance grooves 165 are formed between adjacent first protrusions 161. The second cover plate 170 is provided with a plurality of second protrusions 171, and clearance grooves 165 are formed between adjacent second protrusions 171. The first protrusion 161 is provided with a third fixing hole 162 opposite to the first fixing hole 124. The second protrusion 171 is provided with a fourth fixing hole 172 opposite to the second fixing hole 125. The first cover plate 160 and the baffle 120 can be fixedly connected by screws or rivets passing through the third fixing hole 162 and the first fixing hole 124. The second cover plate 170 and the baffle 120 can be fixedly connected by screws or rivets passing through the fourth fixing hole 172 and the second fixing hole 125.

[0077] It will be appreciated that the first protrusion 161 is located within the clearance groove 165 of the second cover plate 170, and the second protrusion 171 is located within the clearance groove 165 of the first cover plate 160. This allows the first and second cover plates 160, 170 to be fixed flatly on the baffle 120, that is, the first and second cover plates 160, 170 can be connected to the same mounting surface of the baffle 120, resulting in a compact structure and space conservation. Furthermore, the provision of the clearance groove 165 also serves as a positioning mechanism for installation, improving installation efficiency.

[0078] Optionally, a mounting bracket 180 is provided on a side of the baffle 120 near the second cavity 103. The low-voltage wiring harness passes through the second through-hole 122 and is secured to the mounting bracket 180. The mounting bracket 180 is used to mount a wiring harness holder 190, which is used to secure the low-voltage wiring harness passing through the second through-hole 122. The mounting bracket 180 is positioned opposite the second through-hole 122, or positioned near the second through-hole 122, thereby facilitating installation of the low-voltage wiring harness.

[0079] Combine Figure 16 Optionally, mounting bracket 180 includes a first segment 181, a second segment 182, and a third segment 183, which are connected in sequence. First segment 181 and third segment 183 are disposed opposite each other. First segment 181 and third segment 183 are each connected to the mounting plate; second segment 182 is used to mount wire harness holder 190. Mounting bracket 180 is U-shaped, with the U-shaped opening facing the mounting plate. The U-shaped space is used to secure wire harness holder 190. It will be appreciated that U-shaped mounting bracket 180 can be secured to the mounting plate by welding, bolting, or other methods.

[0080] Combine Figure 17 Of course, in some other embodiments, the structure of the mounting bracket 180 can be flexibly designed. Optionally, the mounting bracket 180 includes a first bent portion 184 and a second bent portion 185 connected to each other. The first bent portion 184 is connected to the mounting plate, and the second bent portion 185 is provided at an end of the first bent portion 184 away from the mounting plate; the first bent portion 184 and the second bent portion 185 are arranged at an angle; the second bent portion 185 is used to mount the wire harness holder 190. The mounting bracket 180 is L-shaped, and the mounting bracket 180 can be integrally formed with the mounting plate. For example, by bending one side edge of the mounting plate into an L-shape, the installation of the wire harness holder 190 can also be facilitated. In addition, the use of the bending integral molding method eliminates the welding process, making manufacturing more convenient, and also avoids deformation of the mounting plate caused by welding, resulting in greater structural strength and a more reliable structure.

[0081] An embodiment of the present invention further provides an electrical device, which includes a device body and the aforementioned battery pack 200. The device body and the battery pack 200 are electrically connected. The battery pack 200 is used to power the device body. The electrical device can be in various forms, such as mobile phones, portable devices, laptop computers, 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 electric tools, grinding electric tools, assembly electric tools and railway electric tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators and electric planers, etc.

[0082] In summary, the battery pack 200 and the power-consuming device provided by the embodiments of the present invention have the following beneficial effects:

[0083] In the battery pack 200 provided in this embodiment of the present invention, the baffle 120 is provided with a through hole connecting the first cavity 102 and the second cavity 103, facilitating the passage of the high-voltage connection bar 220, the low-voltage wiring harness, the liquid inlet pipe 243, and the liquid outlet pipe 244. A manifold 242 is positioned near one end of the baffle 120, and a low-voltage connector 231 is mounted on the manifold 242. This saves space, facilitates installation, and improves the space utilization of the first cavity 102. The compact structure helps improve the space utilization of the housing 110, thereby increasing the energy density of the entire battery pack 200. The sealing sleeve 130 provided on the baffle 120 improves the sealing of the connection and prevents glue overflow. The sealing sleeve 130 also provides sealing, shock absorption, and insulation for cross-region components. The incision 131 provided in the sealing sleeve 130 ensures both sealing and ease of installation.

[0084] The electric device provided in the embodiment of the present invention includes the above-mentioned battery pack 200, which has a compact structure and high energy density, and is conducive to extending the driving range.

[0085] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacements for some or all of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made should be included in the scope of protection of the present invention.

Claims

1. A battery pack, characterized in that: include: A box body (110), the box body (110) having a receiving cavity (101); a baffle (120) is provided in the box body (110), and the baffle (120) divides the receiving cavity (101) into a first cavity (102) and a second cavity (103); The baffle (120) is provided with a first through hole (121), a second through hole (122) and a third through hole (123); A plurality of batteries (210), wherein the plurality of batteries (210) are connected in series and parallel; the plurality of batteries (210) are arranged in the first cavity (102); A high-voltage component, the high-voltage component comprising a high-voltage connection bar (220); one end of the high-voltage connection bar (220) is electrically connected to the battery (210), and the other end extends through the first through hole (121) into the second cavity (103); A low-voltage component (230), the low-voltage component (230) comprising a circuit board (232), a low-voltage connector (231) and a low-voltage wiring harness; the circuit board (232) is electrically connected to the battery (210), the low-voltage connector (231) is connected to the circuit board (232), one end of the low-voltage wiring harness is connected to the low-voltage connector (231), and the other end extends through the second through hole (122) into the second cavity (103); A thermal management component (240) includes a cold plate (241), a manifold (242), a liquid inlet pipe (243), and a liquid outlet pipe (244); the cold plate (241) is connected to the manifold (242), and the manifold (242) is respectively connected to the liquid inlet pipe (243) and the liquid outlet pipe (244); the cold plate (241) is arranged between a plurality of batteries (210); the liquid inlet pipe (243) and the liquid outlet pipe (244) respectively pass through the third through hole (123) and are led out of the second cavity (103); and the low-voltage connector (231) is arranged on the manifold (242).

2. The battery pack according to claim 1, wherein: A sealing sleeve (130) is provided on the baffle (120), and the sealing sleeve (130) is provided with the first through hole (121), and / or the second through hole (122), and / or the third through hole (123); and the hole walls of the first through hole (121), the second through hole (122), and the third through hole (123) are respectively provided with cutouts (131).

3. The battery pack according to claim 2, wherein: The incision (131) includes a first incision (132), a second incision (133) and a third incision (134); The first through hole (121) is rectangular, the long side of the rectangle is provided with a first incision (132), and the short side of the rectangle is provided with a second incision (133); the length of the first incision (132) is greater than the length of the second incision (133); And / or, the second through hole (122) is circular or elliptical, and a hole wall of the second through hole (122) is provided with a plurality of third cutouts (134) along the circumferential direction.

4. The battery pack according to claim 1, wherein: The low-voltage assembly (230) further includes an insulating fixing member (140), and the low-voltage connector (231) is arranged on the insulating fixing member (140); a bayonet (141) is provided on the insulating fixing member (140), and the bayonet (141) is sleeved on the manifold (242).

5. The battery pack according to claim 1, wherein: An insulating support column is provided in the box (110), and the high-voltage component further comprises a metal sheet, one end of the metal sheet along a first direction is electrically connected to the battery (210), and the other end is connected to the high-voltage connection bar (220); and both the metal sheet and the high-voltage connection bar (220) are fixed on the insulating support column.

6. The battery pack according to claim 5, characterized in that: The box body (110) is provided with a limiting column (154); one end of the metal sheet along the second direction is connected to the high-voltage connection row (220), and the other end is connected to the limiting column (154); the first direction and the second direction are perpendicular.

7. The battery pack according to claim 1, wherein: The baffle (120) has a top and a bottom that are opposite in the height direction; the axis of the first through hole (121) and the axis of the second through hole (122) are located in the same height plane and are both close to the top of the baffle (120); and the third through hole (123) is close to the bottom of the baffle (120).

8. The battery pack according to claim 7, characterized in that: The box body (110) further comprises a first cover plate (160) and a second cover plate (170), wherein the first cover plate (160) is provided to cover the first cavity (102), and the second cover plate (170) is provided to cover the second cavity (103); A first mounting portion and a second mounting portion are provided on the top of the baffle (120), and the first mounting portion and the second mounting portion are alternately distributed; the first mounting portion is connected to the first cover plate (160); the second mounting portion is connected to the second cover plate (170); and mutually staggered paving grooves (165) are provided at one end of the first cover plate (160) and the second cover plate (170) that are close to each other.

9. The battery pack according to any one of claims 1 to 8, characterized in that: A mounting bracket (180) is provided on one side of the baffle (120) close to the second cavity (103), and the low-voltage wiring harness is fixed on the mounting bracket (180) after passing through the second through hole (122).

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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