High-voltage box with double-layer structure

Abstract

The utility model discloses a high-voltage box with a double-layer structure. The high-voltage box comprises a box body, a first layer plate, a second layer plate and a plurality of electrical parts, the box body is provided with a bottom plate, a peripheral side plate and a top plate, the peripheral side plate extends along the edge of the bottom plate and is connected to the bottom plate, the top plate is connected to the peripheral side plate, and a cavity is defined by the bottom plate, the peripheral side plate and the top plate. The first layer plate is arranged in the cavity and fixedly connected to the box body, and a gap is formed between the first layer plate and the bottom plate. The second layer plate is arranged in the cavity, fixed to the box body and located between the first layer plate and the top plate. And the electrical parts are respectively arranged on the first layer plate and the second layer plate. According to the high-voltage box, the internal space is fully utilized through the arrangement of the first layer plate and the second layer plate, more electrical part arrangement positions are provided, and the size of the high-voltage box is reduced. The high-voltage box can be of a narrow box body structure, enough installation positions can be provided by arranging the first layer plate and the second layer plate, and all electrical parts are convenient to arrange.

Description

TECHNICAL FIELD

[0001] The utility model relates to high pressure box technical field especially relates to a high pressure box of double -deck structure arrangement. BACKGROUND

[0002] Power battery is the heart of electric vehicle, and high pressure box is the key component connecting high voltage battery pack and vehicle-mounted charger. High pressure box is usually composed of cable, power control, circuit protection and temperature management module, and must meet the electrical requirements and safety performance under high voltage environment.

[0003] The power control module in high pressure box is mainly responsible for controlling and managing the voltage and current of battery pack. For the charging and discharging process of battery pack, reasonable control is needed to ensure the life and performance of battery pack, and at the same time to ensure the safe use of battery pack. The circuit protection module in high pressure box can discover and block the circuit in time when the battery pack fails, protecting the safety of the whole system. The circuit protection module can diagnose and judge the fault by monitoring the temperature, voltage, current and power of the battery pack, ensuring the safe operation of the battery pack under high voltage. The internal temperature of power battery will continue to rise under high voltage, which may cause the failure of battery pack when reaching a certain temperature, so the temperature management module of high pressure box is particularly important. The temperature management module can monitor the temperature of battery pack and control and manage it to ensure that the temperature of battery pack is always within a safe range.

[0004] In related technology, high pressure box includes box body and a large number of electrical components, including relay, current sensor, pre-charge resistor, etc. The box body is usually small in height and wide in bottom plate, and various electrical components can be conveniently arranged on the bottom plate. However, when the shape of high pressure box changes, for example, when a narrower but higher high pressure box needs to be designed, the bottom plate area of high pressure box is too small to arrange various electrical components.

[0005] Therefore, the utility model is proposed. UTILITY MODEL CONTENT

[0006] To solve one of the above technical problems, the utility model provides a high pressure box of double -deck structure arrangement.

[0007] The utility model adopts the following technical scheme:

[0008] The embodiment of the application provides a high pressure box of double -deck structure arrangement, which comprises:

[0009] The box body has a bottom plate, a peripheral side plate and a top plate, the peripheral side plate extends along the edge of the bottom plate, and the peripheral side plate is connected to the bottom plate, the top plate is connected to the peripheral side plate, and the bottom plate, the peripheral side plate and the top plate enclose a cavity;

[0010] a first layer plate, disposed in the cavity, and fixedly connected to the box, the first layer plate and the bottom plate having a spacing;

[0011] a second layer plate, disposed in the cavity, and fixedly connected to the box, the second layer plate being located between the first layer plate and the top plate;

[0012] a plurality of electrical components, each of which is disposed on the first layer plate and the second layer plate.

[0013] Optionally, the high-voltage box with a double-layer structure arrangement comprises a plurality of support members;

[0014] Each of the support members is connected to the bottom plate;

[0015] The first layer plate is supported on each of the support members, and the first layer plate is fixed to the support members.

[0016] Optionally, the support member has a top piece and two side pieces, the two side pieces being disposed on both sides of the top piece, and a bent edge being disposed on a side of the side piece away from the top piece;

[0017] The bent edge is fixedly attached to the bottom plate;

[0018] The first layer plate is fixedly attached to the top piece of each of the support members.

[0019] Optionally, the high-voltage box with a double-layer structure arrangement comprises a first fastener;

[0020] The first fastener comprises a screw rod and a cap body disposed on the screw rod;

[0021] The screw rod penetrates the first layer plate and the top piece, and a nut is threadedly connected to the screw rod;

[0022] The cap body and the nut are respectively limited on the first layer plate and the top piece.

[0023] Optionally, an edge of the first layer plate is provided with a downward turned edge extending toward one side of the bottom plate.

[0024] Optionally, the high-voltage box with a double-layer structure arrangement comprises a reinforcing beam;

[0025] The reinforcing beam is located in the cavity, and the reinforcing beam is disposed on the bottom plate;

[0026] The downward turned edge is provided with a clearance gap avoiding the reinforcing beam.

[0027] Optionally, the reinforcing beam comprises a first direction reinforcing beam and a second direction reinforcing beam;

[0028] The first direction reinforcing beam and the second direction reinforcing beam are perpendicular to each other;

[0029] The lower flanging is provided with a avoiding gap corresponding to the first direction reinforcing beam and the second direction reinforcing beam respectively.

[0030] Optionally, the high-voltage box of double-layer structure arrangement comprises a plurality of supporting legs;

[0031] The supporting leg is fixed to the inner wall of the circumferential side plate;

[0032] The second layer plate is supported on each supporting leg, and the second layer plate is fixed to the supporting leg.

[0033] Optionally, the high-voltage box comprises a second fastener;

[0034] One end of the second fastener is connected to the supporting leg through the second layer plate, and the cap of the second fastener is limited on the second layer plate;

[0035] The supporting leg is welded to the inner wall of the circumferential side plate.

[0036] Optionally, the second layer plate is provided with an upper flanging extending to one side of the top plate.

[0037] By adopting the above technical scheme, the application has the following beneficial effects:

[0038] The high-voltage box of the application makes full use of the internal space by setting the first layer plate and the second layer plate, provides more electrical component setting positions, and is beneficial to reducing the size of the high-voltage box. The high-voltage box can be a box body structure with a relatively narrow width, and sufficient mounting positions can be provided by setting the first layer plate and the second layer plate, thereby facilitating the arrangement of various electrical components.

[0039] The specific embodiments of the application will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0040] The accompanying drawings, which are part of the present application, serve to provide a further understanding of the application, and the illustrative embodiments of the application and their descriptions serve to explain the application, but do not constitute an improper limitation on the application. Obviously, the drawings described below are only some embodiments, and other drawings can be obtained by those skilled in the art without creative labor. In the drawings:

[0041] Figure 1 The accompanying drawings, which are part of the present application, serve to provide a further understanding of the application, and the illustrative embodiments of the application and their descriptions serve to explain the application, but do not constitute an improper limitation on the application. Obviously, the drawings described below are only some embodiments, and other drawings can be obtained by those skilled in the art without creative labor. In the drawings:

[0042] Figure 2An internal structure schematic diagram of the high-voltage box with a double-layer structure arrangement provided by the embodiment of the present application is shown in the figure.

[0043] Figure 3 A box body structure schematic diagram of the high-voltage box with a double-layer structure arrangement provided by the embodiment of the present application is shown in the figure.

[0044] Figure 4 A first perspective view of the first layer plate and the second layer plate of the high-voltage box with a double-layer structure arrangement provided by the embodiment of the present application is shown in the figure.

[0045] Figure 5 A second perspective view of the first layer plate and the second layer plate of the high-voltage box with a double-layer structure arrangement provided by the embodiment of the present application is shown in the figure.

[0046] Figure 6 A third perspective view of the first layer plate and the second layer plate of the high-voltage box with a double-layer structure arrangement provided by the embodiment of the present application is shown in the figure.

[0047] Figure 7 A circuit schematic diagram of the high-voltage box and the battery pack is shown in the figure.

[0048] In the figure: 1, box body; 11, bottom plate; 12, circumferential side plate; 13, top plate; 2, first layer plate; 21, lower flange; 211, avoiding notch; 3, second layer plate; 31, upper flange; 4, support piece; 41, top piece; 42, side piece; 43, bent edge; 5, reinforcing beam; 51, first direction reinforcing beam; 52, second direction reinforcing beam; 6, support leg; a, electrical component.

[0049] It should be noted that the drawings and the written description are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0050] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments will be described clearly and completely below in combination with the drawings in the embodiments of the present application. The following embodiments are used to illustrate the present application, but not to limit the scope of the present application.

[0051] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or components referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0052] In the description of the utility model, it needs to explain, unless another explicit provision and limitation, the term "installation", "connection" should do the broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected, can be mechanical connection, also can be electrical connection, can be direct connection, also can through the indirect connection of intermediate medium. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.

[0053] As Figures 1 to 7 The utility model provides a high pressure box of double -deck structure arrangement, include: box 1, first layer board 2, second layer board 3 and a plurality of electrical components a. Box 1 has bottom plate 11, circumferential side plate 12 and top plate 13, the circumferential side plate 12 extends along the edge of bottom plate 11, and the circumferential side plate 12 is connected to bottom plate 11, top plate 13 is connected to circumferential side plate 12, bottom plate 11, circumferential side plate 12 and top plate 13 enclose and form cavity. First layer board 2 is arranged in the cavity, and the first layer board 2 is fixedly connected to the box 1, the first layer board 2 and bottom plate 11 have spacing, second layer board 3 is arranged in the cavity, and the second layer board 3 is fixed to the box 1, and the second layer board 3 is located between the first layer board 2 and the top plate 13, each electrical component a is separately arranged on the first layer board 2 and the second layer board 3.

[0054] The high pressure box of the application makes full use of the internal space by setting the first layer board 2 and the second layer board 3, provides more electrical component a setting positions, which is conducive to reducing the size of the high pressure box. The high pressure box can be a box body structure with a relatively narrow width, and the setting of the first layer board 2 and the second layer board 3 can meet the requirements of setting various electrical components a.

[0055] Figure 7 The circuit schematic diagram of the high pressure box and the battery pack is shown. The left dashed box in the figure is the battery side, and two battery packs are shown in the figure, and a plurality of battery modules are arranged in each battery pack. The other parts in the figure are the circuit structure of the high pressure box. Two charging circuits, two discharging circuits and water-cooled unit power supply circuits are usually arranged in the high pressure box. There are a large number of electrical components a on each circuit, such as relays, pre-charging resistors, MSDs and Hall sensors (or current sensors) and the like. For example, charging positive relays and charging negative relays are arranged on the charging circuit. Pre-charging relays, pre-charging resistors, main positive relays and main negative relays are arranged on the discharging circuit. Water-cooled unit positive relays are arranged on the water-cooled unit power supply circuit. MSDs and Hall sensors can be arranged on the input end circuit of the high pressure box. These electrical components a are arranged on the first layer board 2 or the second layer board 3 according to actual requirements.

[0056] In some possible embodiments, as Figure 4As shown, the high-voltage box with a double-layer structure includes multiple support members 4, each of which is connected to the base plate 11. The first layer plate 2 is supported on each of the support members 4 and is fixed to the support members 4.

[0057] Each support member 4 can be arranged in multiple rows and columns. The first layer plate 2 is supported on each support member 4, and each support member 4 stably supports the first layer plate 2. For example, two columns of support members 4 are arranged, located on both sides of the base plate 11 along the width direction, and each support member 4 in the two columns is arranged at intervals along the length direction of the base plate 11.

[0058] Each electrical component a can be pre-installed on the first layer plate 2 and the second layer plate 3, and then the entire first layer plate 2 and the second layer plate 3 can be installed into the housing 1. When the housing 1 is relatively tall, that is, the internal space of the housing 1 is relatively deep, each electrical component a can be pre-installed on the first layer plate 2, and then the first layer plate 2 can be installed into the housing 1, thereby simplifying the assembly process.

[0059] In some possible implementations, such as Figure 4 As shown, the support member 4 has a top piece 41 and two side pieces 42. The two side pieces 42 are respectively disposed on both sides of the top piece 41. The side piece 42 has a bent edge 43 on the side away from the top piece 41. The bent edge 43 is attached and fixed to the base plate 11. The first layer plate 2 is attached and fixed to the top piece 41 of each support member 4.

[0060] The support member 4 can be U-shaped, and the bent edges 43 of the two side pieces 42 can be fitted together and welded to the base plate 11. The first layer plate 2 and the support member 4 can be connected by any of the following methods: welding, fasteners, and adhesive bonding.

[0061] For example, a high-voltage box with a double-layer structure may include a first fastener, which includes a screw and a cap disposed on the screw. The screw passes through the first layer plate 2 and the top plate 41, and a nut is threadedly connected to the screw. The cap and nut are respectively confined to the first layer plate 2 and the top plate 41. The first fastener is a bolt, and the nut can be pre-fixed to the lower side of the top plate 41 of the support member 4. The top plate 41 is provided with a clearance hole. After passing through the first layer plate 2, the bolt's screw further passes through the clearance hole on the top plate 41 and is threadedly connected to the nut. The nut can be welded to the top plate 41.

[0062] In some possible implementations, such as Figure 4 , Figure 5 and Figure 6As shown, the edge of the first layer plate 2 is provided with a downward turned edge 21 extending to the side of the bottom plate 11. By providing the downward turned edge 21 at the edge of the first layer plate 2, the structural strength of the edge of the first layer plate 2 can be enhanced, and the deformation of the first layer plate 2 can be reduced, and the first layer plate 2 can avoid cutting the cable.

[0063] In some possible embodiments, as shown in Figure 4 and Figure 6 As shown, the high-voltage box arranged in a double-layer structure further comprises a reinforcing beam 5 located in the cavity and arranged on the bottom plate 11, and the downward turned edge 21 is provided with a avoiding gap 211 avoiding the reinforcing beam 5. The reinforcing beam 5 is attached to the bottom plate 11 and extends along the bottom plate 11, which is conducive to enhancing the structural strength of the bottom plate 11.

[0064] As shown in Figure 4 The reinforcing beam 5 can comprise a first direction reinforcing beam 51 and a second direction reinforcing beam 52, which are perpendicular to each other, the first direction reinforcing beam 51 can extend along the length direction of the bottom plate 11, and the second direction reinforcing beam 52 can extend along the width direction of the bottom plate 11. The first layer plate 2 has a smaller area than the bottom plate 11, and the downward turned edge 21 on the periphery side is provided with avoiding gaps corresponding to the first direction reinforcing beam 51 and the second direction reinforcing beam 52, respectively.

[0065] In some possible embodiments, as shown in Figure 4 and Figure 6 As shown, the high-voltage box arranged in a double-layer structure comprises a plurality of support legs 6 fixed to the inner wall of the peripheral side plate 12, the second layer plate 3 is supported on each of the support legs 6, and the second layer plate 3 is fixed to the support legs 6. Compared with directly fixing the second layer plate 3 to the peripheral side plate 12, the support legs 6 are arranged on the peripheral side plate 12, and the second layer plate 3 is supported by the support legs 6, so that the assembly structure of the second layer plate 3 is more stable. A plurality of support legs 6 can be installed on the peripheral side plate 12 in advance, and then the second layer plate 3 can be loaded from the top of the cavity and smoothly supported on each of the support legs 6, thereby simplifying the assembly process.

[0066] In some possible embodiments, the high-voltage box comprises a second fastener, one end of the second fastener is connected to the support leg 6 through the second layer plate 3, and the cap of the second fastener is limited on the second layer plate 3, and the support leg 6 is welded to the inner wall of the peripheral side plate 12. The second fastener can be operated on the top of the second layer plate 3 after the second layer plate 3 is loaded into the cavity and supported on the support leg 6. For example, a threaded groove can be arranged on the support leg 6, and the second fastener can be a bolt, the shank of the bolt is threadedly connected to the threaded groove on the support leg 6 through the second layer plate 3, and the cap of the bolt is limited on the second layer plate 3.

[0067] In some possible embodiments, as shown in Figures 3 to 6 The second layer plate 3 is provided with an upper turning edge 31 extending to one side of the top plate 13. The provision of the upper turning edge 31 is advantageous to enhance the overall structural strength of the second layer plate 3. Meanwhile, the provision of the upper turning edge 31 makes the top of the second layer plate 3 form a box-shaped structure with a recessed cavity to conveniently accommodate various electrical components a.

[0068] The above merely describes the preferred embodiments of the present application and is not intended to limit the present application in any form. Although the present application has been disclosed as above with reference to the preferred embodiments, it is not intended to limit the present application. Any person skilled in the art can make some changes or modifications to the above-mentioned technical content without departing from the technical solution of the present application, and any simple modification, equivalent change and modification of the above-mentioned embodiments based on the technical essence of the present application still belong to the scope of the present application.

Claims

1. A high voltage case of a double-layered structural arrangement, characterized by, include: The box has a bottom plate, a peripheral side plate and a top plate. The peripheral side plate extends along the edge of the bottom plate and is connected to the bottom plate. The top plate is connected to the peripheral side plate, and the bottom plate, peripheral side plate and top plate enclose a cavity. The first layer plate is disposed in the cavity and is fixedly connected to the box body, and there is a gap between the first layer plate and the bottom plate; The second layer plate is disposed in the cavity, the second layer plate is fixed to the box body, and the second layer plate is located between the first layer plate and the top plate; Multiple electrical components are disposed on the first layer plate and the second layer plate respectively.

2. The double-layered arrangement of high-voltage boxes according to claim 1, characterized in that, Includes multiple support components; Each of the aforementioned support members is connected to the base plate; The first layer plate is supported on each of the support members, and the first layer plate is fixed to the support members.

3. The double-layered arrangement of high-voltage boxes according to claim 2, characterized in that, The support member has a top piece and two side pieces, the two side pieces are respectively disposed on both sides of the top piece, and the side pieces opposite to the top piece are provided with a bent edge; The bent edge is fitted and fixed to the base plate; The first layer plate is attached and fixed to the top piece of each of the support members.

4. The dual-layer arrangement high-voltage box according to claim 3, characterized in that, Including the first fastener; The first fastener includes a screw and a cap disposed on the screw; The screw passes through the first layer plate and the top plate, and the nut is threadedly connected to the screw; The cap and nut are respectively positioned on the first layer plate and the top plate.

5. The dual-layer arrangement high-voltage box according to claim 1, characterized in that, The first layer has a downward-curved edge along its edge, which extends toward one side of the bottom plate.

6. The dual-layer arrangement high-voltage box according to claim 5, characterized in that, Including reinforced beams; The reinforcing beam is located inside the cavity and is disposed on the bottom plate; The lower flange is provided with a clearance notch to avoid the reinforcing beam.

7. The dual-layer arrangement high-voltage box according to claim 6, characterized in that, The reinforcing beam includes a first-direction reinforcing beam and a second-direction reinforcing beam; The first direction reinforcing beam and the second direction reinforcing beam intersect perpendicularly; The down-turned edge is provided with avoidance gaps corresponding to the first direction reinforcing beam and the second direction reinforcing beam, respectively.

8. The dual-layer arrangement high-voltage box according to claim 1, characterized in that, Includes several supporting legs; The supporting leg is fixed to the inner wall of the peripheral side plate; The second layer plate is supported on each of the support legs, and the second layer plate is fixed to the support legs.

9. The double-layered arrangement of high-voltage boxes according to claim 8, characterized in that, Including the second fastener; One end of the second fastener passes through the second layer plate and is connected to the support leg, and the cap of the second fastener is confined to the second layer plate; The support leg is welded to the inner wall of the peripheral side plate.

10. The double-layered arrangement of high-voltage boxes according to any of claims 1-9, characterized in that, The second layer plate has an upward-turned edge along its edge, which extends toward one side of the top plate.

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