Beams, boxes and battery packs

Abstract

The present application provides a beam, a box and a battery pack, which relate to the field of battery production technology. The beam includes a beam body, a first support seat and a second support seat. The beam body includes adjacent first side surfaces and a top surface. The first support seat includes a first base and a slider slidably provided on the first base. The first base is provided on the top surface. The slider is used to connect with the connecting row. The second support seat is provided on the first side surface, and the second support seat is used to install the end of the connecting row away from the slider. The beam is provided with a first support seat and a second support seat, which can integrate the high-voltage components of the battery pack, has a compact structure, rationally utilizes space, and improves the energy density of the battery pack. It can also avoid interference between high and low voltage components, thereby improving safety and reliability.

Description

Technical Field

[0001] The present invention relates to the technical field of battery production, and in particular to a crossbeam, a box and a battery pack. Background Art

[0002] Existing battery systems are increasingly demanding higher levels of integration, especially in the electrical compartment at the front of the battery pack. Due to the limited space within the compartment, the high and low voltage components of the battery system can overlap, interfere, or even interfere with each other, potentially posing safety risks. If sufficient space is reserved for the high and low voltage components, the battery pack will become larger or some of the compartment space will be compressed, reducing the overall energy density of the battery pack. Summary of the Invention

[0003] The present invention aims to provide a crossbeam, box, and battery pack with a compact structure, high space utilization, and improved energy density. Furthermore, the high and low voltage arrangements of the battery pack do not interfere with each other, ensuring safety and reliability.

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

[0005] a beam body, the beam body comprising adjacent first side surfaces and a top surface;

[0006] A first support base, comprising a first base and a slider slidably disposed on the first base; the first base is disposed on the top surface; the slider is used to connect with the connecting row;

[0007] A second support seat is provided on the first side surface, and the second support seat is used for mounting an end of the connecting row away from the sliding block.

[0008] In an optional embodiment, the beam body is provided with a receiving cavity, and the first support seat and the second support seat are respectively at least partially provided in the receiving cavity.

[0009] In an optional embodiment, the first base includes a first substrate, a first wall and a second wall arranged opposite to each other, the first wall and the second wall are respectively connected to the first substrate; the first substrate is arranged parallel to the top surface, and the first wall and the second wall are arranged in the accommodating cavity;

[0010] The first substrate is provided with a first mounting through hole, and the sliding block is provided in the first mounting through hole and can slide in the first mounting through hole.

[0011] In an optional embodiment, a guide rail is provided on the first wall and / or the second wall, and the slider is movably mounted on the guide rail;

[0012] And / or, a second mounting through hole is provided on the first substrate, and a third mounting through hole is provided on the top surface opposite to the second mounting through hole.

[0013] In an optional embodiment, a threaded hole is provided on the slider, or a nut is embedded in the slider.

[0014] In an optional embodiment, the second support seat includes a second substrate and a mounting portion connected to the second substrate, the second substrate and the first side are arranged parallel to each other, the mounting portion is located in the accommodating cavity, and the mounting portion is used to install the connecting row.

[0015] In an optional embodiment, the mounting portion includes a peripheral side wall protruding from the second substrate, the peripheral side wall is provided with a limit slot, one end of the limit slot is provided with a guide portion, and the other end is provided with a stop portion, and the limit slot is used to mount the connecting bar;

[0016] And / or, an insulating protection wing is extended from the slot wall of the limiting slot.

[0017] In an optional embodiment, the second substrate is provided with a fourth mounting through hole, and the first side surface is provided with a fifth mounting through hole arranged opposite to the fourth mounting through hole.

[0018] In a second aspect, the present invention provides a box body comprising a bottom plate, side plates connected around the bottom plate, and a crossbeam described in any one of the aforementioned embodiments, wherein the bottom plate and the side plates form a receiving groove; the two ends of the crossbeam are respectively connected to the side plates, and the crossbeam divides the receiving groove into a first receiving groove and a second receiving groove.

[0019] In a third aspect, the present invention provides a battery pack comprising a battery, a connecting bar and a box body as described in the aforementioned embodiment, wherein the battery is disposed in the first receiving groove, the battery and the connecting bar are electrically connected, the connecting bar is disposed in the crossbeam, and the first side surface of the beam body faces the second receiving groove.

[0020] In an optional embodiment, the connecting bar includes a main body and a first end portion and a second end portion connected to both ends of the main body, the first end portion is provided with an adjustment hole, and the second end portion is provided with a rivet nut;

[0021] And / or, the main body is covered with an insulating layer.

[0022] The crossbeam, box, and battery pack provided by the embodiments of the present invention have the following beneficial effects:

[0023] The crossbeam provided in this embodiment of the present invention features first and second support brackets, which can be integrated with a connecting bar, solving the problem of arranging high-voltage components in the battery pack. This provides more space and flexibility for the placement of low-voltage components, and prevents cross-interference between high- and low-voltage components, ensuring safety and reliability. Furthermore, the structure is compact, easy to install, and space-efficient, which helps improve the overall energy density of the battery pack.

[0024] The box provided by the embodiment of the present invention, including the above-mentioned crossbeam, has a compact structure, small volume, high space utilization, and is conducive to improving the overall energy density of the battery pack. In addition, the layout of high and low voltage components is unlikely to cross or interfere, and is safe and reliable.

[0025] The battery pack provided by the embodiment of the present invention includes the above-mentioned box body, has a compact structure, a small volume, a high overall energy density, and is safe and reliable. 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 diagram of a portion of the structure of a battery pack provided in an embodiment of the present invention;

[0028] Figure 2 for Figure 1 A partial enlarged schematic diagram of point A in the middle;

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

[0030] Figure 4 A schematic structural diagram of a beam body provided in an embodiment of the present invention;

[0031] Figure 5 A schematic structural diagram of a first support base of a beam provided by an embodiment of the present invention from a first perspective;

[0032] Figure 6 A schematic structural diagram of a first support base of a beam provided by an embodiment of the present invention from a second perspective;

[0033] Figure 7 A schematic structural diagram of a second support base of a beam provided by an embodiment of the present invention from a first perspective;

[0034] Figure 8 A schematic structural diagram of a second support base of a beam provided by an embodiment of the present invention from a second perspective;

[0035] Figure 9 A schematic structural diagram of a connecting row of a battery pack provided by an embodiment of the present invention from a first perspective;

[0036] Figure 10 A schematic structural diagram of a connection row of a battery pack provided by an embodiment of the present invention from a second perspective.

[0037] Icons: 100-beam; 110-beam body; 111-top surface; 112-third mounting hole; 113-first side surface; 114-fifth mounting hole; 115-accommodating cavity; 116-first mounting interface; 117-second mounting interface; 120-first support seat; 121-first base; 122-first base plate; 123-first mounting hole; 124-second mounting hole; 125-first wall; 126-second wall; 127-guide rail; 128-connector; 130-slider; 131-nut; 140-second support seat; 1 41-second substrate; 142-mounting portion; 143-limiting slot; 144-guide portion; 145-stop portion; 146-insulating protection wing; 147-fourth mounting through hole; 148-sixth mounting through hole; 200-battery pack; 210-casing; 211-bottom plate; 212-side plate; 230-first accommodating slot; 240-second accommodating slot; 250-battery; 251-metal sheet; 252-fastener; 260-connecting row; 261-first end portion; 262-second end portion; 263-insulating layer; 264-adjustment hole; 265-rivet nut. DETAILED DESCRIPTION

[0038] 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.

[0039] 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.

[0040] 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.

[0041] 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.

[0042] 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.

[0043] 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.

[0044] 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.

[0045] Combine Figure 1 and Figure 2 The embodiment of the present invention proposes a crossbeam 100, which is applied to the housing 210 of the battery pack 200. The crossbeam 100 is used to divide the housing 210 into a first housing 230 and a second housing 240. The first housing 230 is used to accommodate the battery 250, that is, it serves as a battery compartment. The second housing 240 serves as an electrical compartment for installing an electronic control unit such as a battery-powered unit (BDU).

[0046] The batteries in the battery compartment need to be connected to the electronic control unit in the electrical compartment to control battery charging and discharging and monitor the battery status. Generally, the batteries and the electronic control unit are electrically connected by a high-voltage copper busbar passing over the crossbeam, which requires occupying the top area of ​​the crossbeam, causing interference with the overall layout of the battery pack. At the same time, it will also cause the copper busbar to be too long, increasing resistance and increasing power loss. In addition, the copper busbar is too long and is subjected to greater bending and tensile stress. Under the action of long-term variable stress such as bumps and vibrations, it is more likely to produce mechanical fatigue, resulting in cracks, breakage and other problems in the copper busbar, affecting the durability and life of the battery pack.

[0047] Based on this, in an embodiment of the present invention, the crossbeam 100 includes a beam body 110, a first support seat 120, and a second support seat 140. The beam body 110 includes adjacent first side surfaces 113 and a top surface 111. The first support seat 120 includes a first base 121 and a slider 130 slidably provided on the first base 121. The first base 121 is provided on the top surface 111. The slider 130 is used to connect with the connecting row 260. The second support seat 140 is provided on the first side surface 113, and the second support seat 140 is used to install the end of the connecting row 260 away from the slider 130. The crossbeam 100 is provided with the first support seat 120 and the second support seat 140, which can reasonably arrange the connecting row 260 of the battery pack 200, solving the arrangement problem of the high-voltage components of the battery pack 200, and reserving more space and layout flexibility for the layout of the low-voltage components. It can avoid problems such as intersection, overlap, and interference between the high and low voltage components, thereby improving safety and reliability. At the same time, the length of the high-voltage busbar is reduced, the overall energy efficiency is improved, and the structure is compact, which saves space in the box 210 and improves the energy density of the battery pack 200.

[0048] Combine Figure 3 and Figure 4 Optionally, the beam body 110 is provided with a first mounting interface 116 and a second mounting interface 117 . The first support seat 120 is provided at the first mounting interface 116 . The second support seat 140 is provided at the second mounting interface 117 .

[0049] In one optional embodiment, the first mounting interface 116 and the second mounting interface 117 correspond one-to-one, thereby guiding the connection bar 260 in the battery compartment into the electrical compartment through the first support base 120 and the second support base 140. In another embodiment, two first mounting interfaces 116 correspond to one second mounting interface 117, and the two first mounting interfaces 116 are arranged on both sides of the second mounting interface 117, so that the two first support bases 120 lead the two connection bars 260 out from the second support base 140 at the same second mounting interface 117, further improving space utilization and reducing costs.

[0050] The beam body 110 defines a receiving cavity 115, with the first support base 120 and the second support base 140 each at least partially disposed within the receiving cavity 115. In this embodiment, the beam body 110 is constructed of an aluminum profile or aluminum alloy profile and has a hollow structure. Specifically, the internal cavity of the beam body 110 serves as the receiving cavity 115 for the first and second support bases 120 and 140. This results in a more compact structure, reducing the additional volume occupied by the first and second support bases 120 and 140 within the housing 210 and improving space utilization.

[0051] As can be understood, one end of the connecting bar 260 is mounted on the first support base 120, and the other end is mounted on the second support base 140. The connecting bar 260 is also located within the receiving cavity 115. This arrangement allows the magnetic field generated by the connecting bar 260 to be largely shielded by the metal beam body 110, thereby reducing signal interference with other connecting bars or the low-voltage collection harness, and improving the electromagnetic compatibility of the battery pack. The crossbeam also provides a certain degree of support and fixation for the connecting bar 260, thereby limiting its vibration amplitude and reducing the risk of bending, twisting, and breakage caused by vibration during vehicle operation. Furthermore, since the connecting bar 260 is arranged within the receiving cavity 115 of the beam body 110, space outside the beam body 110 is saved, making the overall design of the battery pack 200 more flexible and convenient. Furthermore, this arrangement significantly shortens the length of the connecting bar 260. Furthermore, by eliminating the need to span the space above the crossbeam 100, the Z-height space occupied is significantly reduced, improving the overall energy density, and making the battery pack 200 product more convenient and efficient to manufacture.

[0052] Combine Figure 5 and Figure 6 Optionally, the first base 121 includes a first substrate 122, a first wall 125 and a second wall 126 arranged opposite to each other. The first wall 125 and the second wall 126 are respectively connected to the first substrate 122. The first substrate 122 is arranged parallel to the top surface 111, and the first wall 125 and the second wall 126 are arranged in the accommodating cavity 115. The first substrate 122 is provided with a first mounting hole 123, and the slider 130 is arranged in the first mounting hole 123 and can slide in the first mounting hole 123. The connection bar 260 connected to the first support seat 120 is used to connect with the battery 250. By arranging the first substrate 122 on the top surface 111, the connection bar 260 and the battery 250 can be installed from above, which improves the installation convenience of the connection bar 260 and the battery 250. The cross-sectional area of ​​the first mounting hole 123 is larger than the cross-sectional area of ​​the slider 130, thereby ensuring that the slider 130 can slide in the first mounting hole 123.

[0053] The first and second walls 125, 126 are connected to opposite sidewalls of the first mounting hole 123 along the length of the beam body 110, thereby clamping the slider 130 between the two parallel walls 125, 126. This allows the slider 130 to move along the length of the beam body 110 and provides a degree of protection for the slider 130. Furthermore, guide rails 127 are provided on the first and / or second walls 125, 126, onto which the slider 130 is movably mounted, limiting the position of the slider 130 along the height of the beam body 110 and preventing it from shifting during sliding. In this embodiment, to ensure smoother and more stable movement of the slider 130, guide rails 127 are provided on each of the first and second walls 125, 126. The heights of the two guide rails 127 can be the same or different, depending on the needs. Of course, in other embodiments, the guide rails 127 may be provided only on the first or second wall 125, 126, which is not specifically limited here.

[0054] Optionally, the first base plate 122 is provided with a second mounting hole 124, and the top surface 111 is provided with a third mounting hole 112 disposed opposite the second mounting hole 124. By sequentially inserting connectors 128 into the second mounting hole 124 and the third mounting hole 112, the first support base 120 and the beam body 110 can be securely connected. Connectors 128 include, but are not limited to, screws, bolts, rivets, pins, or plastic clips, and are not specifically limited herein. Of course, the first support base 120 and the beam body 110 can also be secured by snapping, bonding, plugging, or other connection methods.

[0055] Optionally, a threaded hole is provided on the slider 130. Alternatively, a nut 131 is embedded in the slider 130. This arrangement makes it easy to fix the connection row 260 and the slider 130 with bolts or the like. In this embodiment, a nut 131 is embedded in the slider 130. The threaded hole is provided at the top of the slider 130, and the nut 131 is embedded in the threaded hole from the top of the slider 130, thereby achieving the connection of the connection row 260 and improving the operational convenience. It should be noted that the first mounting through hole 123 is a long strip hole, and its length direction is consistent with the length direction of the beam body 110. When installing the connection row 260 to the first support seat 120, first slide the slider 130 to one end of the first mounting through hole 123, away from the position of the connection row 260. Place one end of the connecting bar 260 into the first mounting hole 123, exposing the connecting bar 260 from the first mounting hole 123. Slide the slider 130 below the connecting bar 260, aligning the nut 131 on the slider 130 with the adjustment hole 264 on the connecting bar 260. Insert a bolt into the adjustment hole 264 and tighten the nut 131 to securely connect the connecting bar 260 to the slider 130. To connect the connecting bar 260 to the battery 250 in the battery compartment, place the battery's output terminal on the connecting bar 260, then thread a bolt through the output terminal and the connecting bar, tightening it with the nut 131 to further improve installation efficiency.

[0056] It can be understood that the movable slider 130 makes installation of the connecting bar 260 more convenient. Furthermore, the adjustment holes 264 provided on the connecting bar 260 are oval holes, allowing assembly even with certain processing or installation errors, reducing assembly difficulty and lowering the difficulty of processing and manufacturing parts. This provides greater flexibility and adaptability. Furthermore, the movable slider 130 can adapt to designs with different battery 250 sizes. The position of the slider 130 can be adaptively adjusted according to the position of the metal sheet, and the connecting bar 260 can be adjusted accordingly, thereby improving the applicability of the crossbeam 100.

[0057] Combine Figure 7 and Figure 8 Optionally, the second support base 140 includes a second substrate 141 and a mounting portion 142 connected to the second substrate 141. The second substrate 141 is arranged parallel to the first side surface 113. The mounting portion 142 is located within the accommodating cavity 115. The mounting portion 142 is used to mount the connecting bar 260. The second substrate 141 is arranged on the first side surface 113, and the first side surface 113 corresponds to the electrical compartment, thereby facilitating connection with the electronic control unit and shortening the connection distance between the connecting bar 260 and the electronic control unit in the electrical compartment. The connecting bar 260 is connected to the electronic control unit in the electrical compartment through a high-voltage bus (not shown). Such a design can reduce the length of the high-voltage bus, reduce resistance, improve energy efficiency, and facilitate the layout of the high-voltage bus, reducing the space occupied by the high-voltage bus.

[0058] Optionally, the mounting portion 142 includes a peripheral sidewall protruding from the second substrate 141, forming a frame to accommodate a portion of the connecting bar 260. The peripheral sidewall defines a limiting slot 143, with a guide portion 144 provided at one end of the limiting slot 143 and a stop portion 145 provided at the other end. The guide portion 144 is provided at the end of the limiting slot 143 away from the second substrate 141, and the stop portion 145 is provided at the end of the limiting slot 143 closer to the second substrate 141. The limiting slot 143 is used to mount the connecting bar 260, so that the connecting bar 260 can be inserted into the limiting slot 143 from the end away from the second substrate 141 and ultimately abut against the stop portion 145. It is understood that a chamfer is provided at the notch of the limiting slot 143 to form the guide portion 144, which facilitates the insertion of the connecting bar 260 into the limiting slot 143, making operation more convenient and installation more efficient. The bottom of the limiting slot 143 serves as a stopper 145, limiting the position of the connecting bar 260. The limiting slot 143 extends horizontally, limiting the horizontal position of the connecting bar 260. The stopper 145 is a predetermined distance from the second substrate 141 to prevent the connecting bar 260 from interfering with the inner wall of the cavity of the beam body 110. This prevents the connecting bar 260 from contacting the inner wall of the cavity of the beam body 110 after installation, thereby preventing the connecting bar 260 from short-circuiting. This prevents the connecting bar 260 from contacting the first side surface 113.

[0059] Optionally, the groove wall of the limiting card slot 143 is extended with an insulating protection wing 146. The insulating protection wing 146 is also used to prevent the connection row 260 from short-circuiting due to contact with the beam body 110. In this embodiment, the insulating protection wings 146 are provided on the two opposite sides of the limiting card slot 143 in the height direction of the beam body 110, that is, to protect the connection row 260 in the up and down directions to prevent the connection row 260 from contacting the beam body 110, and thus prevent the connection row 260 from contacting the top surface 111. At the same time, it can also avoid the connection row 260 from stress concentration during installation and breakage caused by vibration during use. When an insulating layer 263 is provided on the peripheral side of the connection row 260, the insulating protection wing 146 can abut the insulating layer 263 to ensure that the connection row 260 is insulated as a whole in the length direction, while playing a certain protective and limiting role on the insulating layer 263 to prevent the insulating layer 263 from warping or puncturing.

[0060] Optionally, the second base plate 141 is provided with a fourth mounting hole 147, and the first side surface 113 is provided with a fifth mounting hole 114 disposed opposite the fourth mounting hole 147. Connectors 128 are sequentially inserted into the fourth mounting hole 147 and the fifth mounting hole 114 to securely connect the second support base 140 to the beam body 110. Connectors 128 include, but are not limited to, screws, bolts, rivets, pins, or plastic clips, and are not specifically limited herein. Of course, the second support base 140 and the beam body 110 may also be secured by snapping, bonding, plugging, or other connection methods.

[0061] It should be noted that a sixth mounting through hole 148 is also provided on the second substrate 141. After the connecting row 260 is fixed in the limiting slot 143, the end of the connecting row 260 is located in the sixth mounting through hole 148. This arrangement facilitates the connection of the connecting row 260 with the external high-voltage bus. Optionally, the cross-sectional size of the sixth mounting through hole 148 can be designed according to the size and shape of the end of the connecting row 260. The end of the connecting row 260 extends through the sixth mounting through hole 148, that is, passes through the first side 113, which is convenient for connection with the high-voltage bus in the electrical compartment, avoiding occupying the space at the top of the beam 100, and is also beneficial to reducing the length of the high-voltage bus and improving energy efficiency.

[0062] Optionally, the first support base 120 and the second support base 140 in this embodiment are both injection molded parts, which are easy to install, have good insulation and high structural strength.

[0063] Combine Figure 1 and Figure 2 The present invention also provides a housing 210 comprising a bottom plate 211, side plates 212 connected to the bottom plate 211, and the aforementioned crossbeam 100. The bottom plate 211 and side plates 212 form a receiving slot. The ends of the crossbeam 100 are connected to a pair of opposing side plates 212, and the crossbeam 100 divides the receiving slot into a first receiving slot 230 and a second receiving slot 240. The first receiving slot 230 serves as a battery compartment, and the second receiving slot 240 serves as an electrical compartment.

[0064] The embodiment of the present invention further provides a battery pack 200, comprising a battery 250, a connecting bar 260 and the aforementioned box 210. The battery 250 is disposed in the first receiving groove 230, the battery 250 and the connecting bar 260 are electrically connected, and the connecting bar 260 is disposed in the crossbeam 100. It can be understood that the beam body 110 includes a first side surface 113 and a second side surface that are arranged opposite to each other. The first side surface 113 of the beam body 110 faces the second receiving groove 240, and the second side surface faces the first receiving groove 230. The second support seat 140 is arranged toward the electrical compartment, thereby shortening the path of the overall high-voltage connection.

[0065] Optionally, the battery 250 is provided with a positive output electrode and a negative output electrode. There are two connecting bars 260, one of which is electrically connected to the positive output electrode, and the other of which is electrically connected to the negative output electrode. Both connecting bars 260 are disposed within the receiving cavity 115 of the crossbeam 100. The positive output electrode of the battery 250 utilizes a metal sheet 251, such as a copper sheet. The copper sheet is provided with mounting holes, which correspond to the adjustment holes 264 on the connecting bar 260 and the nuts 131 on the slider 130. Fasteners 252 are sequentially passed through the metal sheet 251, the connecting bar 260, and the slider 130 to securely connect the positive output electrode and the connecting bar 260. Fasteners 252 include, but are not limited to, bolts. Similarly, the negative output electrode of the battery 250 utilizes a metal sheet 251, such as a copper sheet. The connection method between the negative output electrode and the other first support base 120 is the same as the connection method between the positive output electrode and the first support base 120.

[0066] The two first support seats 120 are respectively arranged on both sides of the second support seat 140, and the two connection rows 260 extend from the interior of the beam body 110 to the second support seat 140 at one end away from the first support seat 120, respectively, for electrically connecting to the external high-voltage bus. In this embodiment, the connection row 260 at the second support seat 140 is used to electrically connect to the high-voltage bus in the electrical compartment. It should be noted that the second support seat 140 is provided with two mounting portions 142 along the length direction of the beam body 110, and the limiting slots 143 provided on the peripheral side walls of the two mounting portions 142 are relatively far apart, that is, the limiting slots 143 are provided on the relatively far sides of the peripheral side walls, corresponding to the connection rows 260 on both sides of the second support seat 140. With this arrangement, the second support seat 140 can simultaneously connect to the two relatively arranged connection rows 260, further improving the utilization space of the beam body 110, saving costs, and improving installation efficiency.

[0067] Combine Figure 9 and Figure 10Optionally, each connecting bar 260 includes a main body, a first end portion 261 connected to both ends of the main body, and a second end portion 262. The first end portion 261 is provided with an adjustment hole 264 for connecting to the slider 130 on the first support base 120. The second end portion 262 is provided with a rivet nut 265, which is positioned within the sixth mounting hole 148 of the second support base 140. The adjustment hole 264 is a rounded hole, that is, the cross-section of the adjustment hole 264 is a rounded rectangle. This can reduce errors during installation and make installation more convenient. The first end portion 261 is bent, specifically, the first end portion 261 is bent upward along the plane of the main body, and the second end portion 262 is bent, specifically, the second end portion 262 is bent downward along the side of the main body. The first end portion 261 and the second end portion 262 are bent and extended on opposite sides of the main body, thereby shortening the length of the connecting row 260. At the same time, the first end portion 261 can be exposed from the first mounting through hole 123, and the second end portion 262 can be exposed from the sixth mounting through hole 148, which is beneficial for the connecting row 260 to connect the battery 250 and the electronic control unit respectively, thereby improving operational convenience.

[0068] In this embodiment, the connecting bar 260 is a copper bar. Made of red copper, the connecting bar 260 has excellent electrical conductivity. Optionally, the main body is coated with an insulating layer 263 to prevent short circuits caused by contact between the connecting bar 260 and the beam body 110. The insulating layer 263 can be made of heat-shrinkable EVA insulating material.

[0069] The installation process of the battery pack 200 provided in this embodiment is as follows:

[0070] Install the crossbeam 100 into the box body 210, and connect the two ends of the crossbeam 100 to a set of opposite side panels 212 respectively. Pre-place the connecting row 260 into the accommodating cavity of the beam body 110. First, install the second support seat 140 to the first side surface 113 of the beam body 110, and snap the connecting row 260 into the limiting slot 143. Then install the first support seat 120 to the top surface 111 of the beam body. Before installing the first support seat 120, first slide the slider 130 to one end, such as the end where the first mounting through hole 123 is away from the second support seat 140. After the first support seat 120 is installed to the beam body 110, move the slider 130 to directly below the connecting row 260. Then, cover the output positive and output negative poles of the battery 250 on the top surface 111 of the beam body 110, and align them with the position of the connecting row 260 in the first support seat 120. Finally, the output positive electrode and the output negative electrode are fixedly connected to the two connection bars 260 respectively by bolts to achieve electrical connection.

[0071] The entire installation process is simple, easy to operate, and has high installation efficiency. It can be understood that the first support base 120 and the output positive pole and output negative pole of the battery 250 are connected in a coordinated manner. Due to the setting of the slider 130 of the first support base 120 and the adjustment hole 264 set on the connecting row 260, position adjustment can be achieved to adapt to the high and low voltage assemblies of different models of battery packs 200, with strong adaptability, high flexibility, and a wide range of usage scenarios. The high and low voltage assembly of the battery pack 200 includes a wiring harness board, which integrates an FPC flexible circuit board, a bus, an output positive pole, and an output negative pole, etc.

[0072] The crossbeam 100, box 210, and battery pack 200 provided by the embodiment of the present invention have the following beneficial effects, including:

[0073] The crossbeam 100 provided in the embodiment of the present invention is provided with a first support seat 120 and a second support seat 140 on the crossbeam 100, which can integrate the connection row 260, thus solving the layout problem of the high-voltage components of the battery pack 200. More space and layout flexibility are reserved for the layout of low-voltage components, and the high and low voltage components are not easy to cross or interfere, which is safe and reliable. In addition, it has a compact structure, easy installation, and high space utilization, which is conducive to improving the overall energy density of the battery pack 200. In addition, the connection row 260 is arranged inside the beam body, which further saves space in the box 210 of the battery pack 200, and can also play an electromagnetic shielding role to reduce EMC interference.

[0074] The box 210 provided by the embodiment of the present invention, including the crossbeam 100, has a compact structure, small size, and high space utilization, which is conducive to improving the overall energy density of the battery pack 200. In addition, the high and low voltage components are not easily crossed or interfered with, and are safe and reliable.

[0075] The battery pack 200 provided in the embodiment of the present invention includes the above-mentioned box body 210, has a compact structure, a small volume, a high overall energy density, and is safe and reliable.

[0076] 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 crossbeam, applied to a battery pack, the battery pack comprising a box, a battery (250) and a connecting bar (260), the box being provided with a receiving groove, the crossbeam dividing the receiving groove into a first receiving groove (230) and a second receiving groove (240); the battery (250) being provided in the first receiving groove (230), the battery (250) and the connecting bar (260) being electrically connected; characterized in that: The connecting row (260) is arranged in the crossbeam, and the crossbeam comprises: A beam body (110), the beam body (110) comprising adjacent first side surfaces (113) and a top surface (111); the beam body (110) is provided with an accommodating cavity (115); the first side surface (113) of the beam body (110) faces the second accommodating groove (240); a first support seat (120), the first support seat (120) comprising a first base (121) and a slider (130) slidably disposed on the first base (121); the first base (121) is disposed on the top surface (111); the slider (130) is used to connect to the connecting row (260); a second support seat (140), the second support seat (140) being arranged on the first side surface (113), and the second support seat (140) being used for mounting one end of the connecting row (260) away from the slider (130); the first base body (121) comprising a first substrate (122), a first wall body (125) and a second wall body (126) arranged opposite to each other, the first wall body (125) and the second wall body (126) being connected to the first substrate (122) respectively; the first substrate (122) being arranged parallel to the top surface (111), and the first wall body (125) and the second wall body (126) being arranged in the accommodating cavity (115); The first substrate (122) is provided with a first mounting through hole (123), and the sliding block (130) is provided in the first mounting through hole (123) and is capable of sliding in the first mounting through hole (123); The second support seat (140) comprises a second substrate (141) and a mounting portion (142) connected to the second substrate (141), the second substrate (141) and the first side surface (113) are arranged in parallel, the mounting portion (142) is located in the accommodating cavity (115), and the mounting portion (142) is used to mount the connecting row (260); A threaded hole is provided on the slider (130), or a nut (131) is embedded on the slider (130).

2. The crossbeam according to claim 1, characterized in that A guide rail (127) is provided on the first wall (125) and / or the second wall (126), and the slider (130) is movably mounted on the guide rail (127); And / or, a second mounting through hole (124) is provided on the first substrate (122), and a third mounting through hole (112) is provided on the top surface (111) and is arranged opposite to the second mounting through hole (124).

3. The crossbeam according to claim 1, characterized in that The mounting portion (142) comprises a peripheral side wall protruding from the second substrate (141), the peripheral side wall being provided with a limit slot (143), one end of the limit slot (143) being provided with a guide portion (144), and the other end being provided with a stop portion (145), the limit slot (143) being used for mounting the connecting row (260); And / or, an insulating protection wing (146) is extended from the groove wall of the limiting slot (143).

4. The crossbeam according to claim 1, characterized in that The second substrate (141) is provided with a fourth mounting through hole (147), and the first side surface (113) is provided with a fifth mounting through hole (114) arranged opposite to the fourth mounting through hole (147).

5. A box, characterized in that: The invention comprises a bottom plate (211), side plates (212) connected around the bottom plate (211), and a crossbeam according to any one of claims 1 to 4, wherein the bottom plate (211) and the side plates (212) form a receiving groove; both ends of the crossbeam are respectively connected to the side plates (212), and the crossbeam divides the receiving groove into a first receiving groove (230) and a second receiving groove (240).

6. A battery pack, characterized in that: The invention comprises a battery (250), a connecting bar (260), and the box body according to claim 5, wherein the battery (250) is arranged in the first receiving groove (230), the battery (250) and the connecting bar (260) are electrically connected, the connecting bar (260) is arranged in the beam, and the first side surface (113) of the beam body (110) faces the second receiving groove (240); The connecting row (260) comprises a main body, and a first end (261) and a second end (262) connected to both ends of the main body; the first end (261) is provided with an adjustment hole (264), and the second end (262) is provided with a rivet nut (265).

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